62results about How to "Convenient on-site debugging" patented technology

The invention discloses an electronic voltage transformer using data fusion technology and an error calibration method thereof. The error calibration method comprises the following steps of: acquiring a secondary measured voltage by using a capacitive voltage divider and a sampling resistor R, accessing the voltage to a data acquisition processor for sampling, and tracing the frequency of the voltage; accessing a signal of a temperature sensor to the data acquisition processor, and computing the temperatures of measuring points; dynamically computing a divided voltage ratio of the capacitive voltage divider according to the temperature variation of the measuring points by using data acquisition device processing software so as to modify a transformation ratio error of the transformer; dynamically computing phase deviation according to signal frequency variation by using the data acquisition device processing software so as to modify a phase error; and outputting a digital sampling value through an optical fiber interface. The device is simple in structure, safe and practical; errors caused by manufacturing factors, temperature and signal acquisition circuits and the like can be effectively modified and restrained; and the measuring accuracy, temperature stability and transient performance of the electronic voltage transformer according to a capacitive voltage division principle are improved.

The invention relates to the technical field of numerical control, in particular to a method for a digital closed-loop control capacitance raising system. In a capacitance acquisition amplifier, the output end of an inductance-capacitance (LC) resonance circuit is connected with the input end of a signal amplifying circuit; in a raiser main control board, the output end of a signal receiving circuit is sequentially connected with the signal input end of a field programmable gate array (FPGA) chip, one input end of a main control board core processor and the other signal end of a servo motor interface circuit; the other two signal ends of the main control board core processor are respectively connected with one end of a human-machine interface and one end of an Ethernet interface in a bidirectional mode; the output end of the signal amplifying circuit is connected with the input end of the signal receiving circuit; and the output end of a magneto-electric conversion circuit of the signal receiving circuit is connected with the signal input end of the FPGA chip. Compared with the prior art, the method has the advantages that: after board capacitance is converted into digital frequency signals, the digital frequency signals are transmitted and measured, so that the method is strong in anti-jamming capability, is not limited by the transmission distance and is high in measurement precision.

This invention discloses a kind of high-efficiency compensating three-phase imbalanced load and reactive power apparatus. It concludes: three-phase current of three-phase electric system, three-phase voltage sampling circuit, power controller and different three-phase compensating elements controlled by the power controller. According to the sampling results, the power controller controls each unidirectional switch of three-phase compensating elements of different topological structure respectively. It makes them can either compensate together or compensate solely; it can either compensate reaction or balance action; it can either use for static compensating or use for dynamic compensating; it can either adjust three-phase current of adjust three-phase imbalanced voltage. It can be used for improving and replacing the reactive compensation apparatus of the three-phase-four-line mode imbalanced load electric system.

The invention discloses a signal processing device compatible with multiple kinds of interfaces of encoders and rotary transformers. The signal processing device at least comprises an input interface module, a signal conditioning circuit, an FPGA (Field Programmable Gate Array) circuit module and a signal output interface module, wherein the input interface module, the signal conditioning circuit, the FPGA circuit module and the signal output interface module are sequentially connected. The signal processing device can be compatible with all kinds of traditional incremental encoders, absolute type encoders and rotary transformers in the market. The invention can realize that signals of more than one encoder and rotary transformer can be simultaneously processed and one or more signal processing results are output without replacing the signal processing device of a detection element interface, is suitable for detection and processing of position, speed and angle signals of different types of mechanical movement parts, is convenient for filed debugging of technicians, is convenient for use, is good in practicability, and has better actual application value and market competitiveness.

The invention discloses an air channel control device which comprises an intelligent gauge outfit, a vent button, optical fiber adaptors, a control circuit, a power supply, an extraction fan, an exhaust joint, a vent joint, an inflation joint, an air supply joint, a vent electromagnetic valve, an inflation electromagnetic valve, a pressure transmitter and a T-shaped three-way joint, wherein an inlet end of the inflation electromagnetic valve is connected with the air supply joint; an outlet end of the inflation electromagnetic valve is connected with one port of the T-shaped three-way joint; another port of the T-shaped three-way joint is connected with the pressure transmitter; another port of the T-shaped three-way joint is connected with the inflation joint; an inlet end of the vent electromagnetic valve is connected with the vent joint; an outlet end of the vent electromagnetic valve is connected with the exhaust joint; and the control circuit is connected with the intelligent gauge outfit, the vent button, the optical fiber adaptors, the power supply, the vent electromagnetic valve and the inflation electromagnetic valve respectively, and used for obtaining control information from the intelligent gauge outfit. The air channel control device can solve the problems that the existing air channel control device is low in control sensitivity, relatively heavy, and inconvenient to debug on site.

The invention relates to a magnetically-controlled reactor control system which comprises a low-voltage part and a high-voltage part, wherein the low-voltage part comprises an upper industrial computer, an LCD touch screen, a main controller, a wireless communication master station and a relay protection device, and is used for detecting voltage and current signals, completing the control function via a control target and sending firing angle data to the high-voltage part in a wireless communication manner; and the high-voltage part comprises an excitation controller A, an excitation controller B and an excitation controller C, and is used for receiving the firing angle instruction sent out by the low-voltage part in a wireless communication manner, and uploading the fault information and control winding voltage to the main controller of the low-voltage part. The magnetically-controlled reactor control system is safe and reliable in insulation of high-voltage part and low-voltage part, is easy to implement, and reduces equipment cost and field construction workload; through synchronous signals provided by the control winding, control accuracy and stability are improved; and under the situation that a hardware platform is basically unchanged, requirements of various application occasions can be met through only selecting and assembling a small quantity of hardware and software modules.

The invention discloses an intelligent capacitor switching composite switch and a switching control method, which can realize state monitoring, fault diagnosis and switching control on three independent composite switches and realize functions of zero crossing detection on voltage, in-situ human-machine interaction and wireless communication with a controller. The intelligent capacitor switching composite switch is composed of an intelligent composite switch control board and composite switches, wherein the intelligent composite switch control board comprises a micro control unit, and an in-situ human-machine interaction unit, a voltage zero crossing detection unit, a state monitoring and fault diagnosis unit, a switching control unit and a communication unit connected with the micro control unit; the composite switches are connected with the switching control unit; and a single group of composite switches is formed by a bidirectional thyristor SSR and an AC contactor normally-open contact KM in parallel connection, voltage zero crossing switching and current zero crossing cutting can be realized by the thyristor, passing of continuous current is realized by the AC contactor normally-open contact, the conduction loss problem of the thyristor can thus be avoided, and inrush current in the case of capacitor switching can also be avoided.

The invention provides a circuit and a control method for the remote control of a plurality of electrical devices by using a pair of buttons. A power source L1 is connected in series with a circuit terminal 2-4 via an on-site master stop button SB10 and a monitoring room master stop button SB30. The circuit terminal 2-4 is connected in series with a power source N via a monitoring room start button SB20 and the paralleled coil groups of a on-site electric relay KR1-KRn. The circuits of a plurality of paralleled control motor contactors are arranged between the circuit terminal 2-4 and a power supply neutral line NN. The circuit of each control motor contactor is implemented by connecting an on-site start button SB11 in parallel with a pair of movably-engaged self-protection auxiliary contacts KM1-1 of a contactor KM1 and a pair of movably-engaged contacts KR1-1 of the on-site electric relay and connecting in series with a stop button SB21 and the coil of a contactor KM1. The main contactor KM1-2 and the moving contact of each motor contactor are connected with the motor, and the static contact thereof is connected with the power source. The invention can control the plurality of electrical devices in the working place with high safety and reliability and facilitates the installation and maintenance.

The invention discloses a synchronizing mechanism for a slab caster automatic flame cutting machine, which relates to a mechanical device consisting of a cylinder, a fulcrum hinged support, a compressing bracket made of water cooling rectangular steel pipes, and an electromagnetic valve. The mechanical device is characterized in that the cylinder is installed on a water cooling frame, one end of the compressing bracket is hinged with the rear part of a rear frame, and the other end is pushed by the cylinder to compress a casting blank, thus causing a cutting vehicle to run synchronously with the casting blank during the cutting so as to ensure the slot is perpendicular to the longitudinal axis of the casting blank. The mechanical device has the beneficial effects that the double stroke cylinder is specially designed according to pre-compression features, the pre-compressing stroke and a main compressing stroke replace the original common cylinder, and a pressure regulating valve in pneumatic control is cancelled. The synchronizing mechanism for the slab caster automatic flame cutting machine not only is convenient for field debugging, but also radically prevents the position of a pressure head from moving during the pre-compressing, thus fully exerting the effect of the pre-compressing and largely increasing the cutting scaling precision.

The invention provides a status monitoring method for a spark gap trigger circuit, which includes the steps: monitoring normality of a path of signal transmitted by a control protector; detecting the status of a trigger instruction output end of a programmable device logic circuit or the status of a trigger output end of a spark gap trigger device; subjecting the detected status signals to digital filtering; broadening narrow-pulse status signals obtained by filtering; and allowing a programmable device to transmit collected status marking signals to the control protector. By the method, the status of the gap trigger circuit can be determined timely and accurately; transient trigger pulse is detected at the trigger output end of the spark gap trigger device; transient status information is reliably transmitted to the control protector in milliseconds; and accordingly the problem of locating failure of the spark gap trigger circuit is well solved, and field debugging and maintenance of the spark gap circuit are facilitated greatly.

The invention discloses a redundant on-site bus I / O control device comprising a control mainboard, a display control panel, a power supply terminal, a switching value incoming signal terminal, a switching value output signal terminal and communication terminals. The control mainboard comprises a central processor, a storage, a power supply interface, an input interface, an output interface, two DP slave station controllers, two optoelectronic isolation circuits and two transmit-receive circuits. The display mainboard comprises a button set, a display screen and an indicating lamp set. In the invention, two DP slave station interfaces are respectively controlled by the DP slave station controllers corresponding to the DP slave station interfaces, and can respectively carry out complete data communication with a main station. When the control device is electrified, a power indication lamp shows the electrification. Through two indicating lamps, states of two DP networks are displayed. Through a display screen, measurement and configuration data are displayed. The communication terminals allows two modes which are a pluggable terminal and a DB9 socket to be employed. The wiring mode is selectable. The redundant on-site bus I / O control device of the invention is simple in structure, low in cost, high in communication rate and is reliable and stable. Usage of cables is greatly reduced.

The invention discloses an electronic voltage transformer using data fusion technology and an error calibration method thereof. The error calibration method comprises the following steps of: acquiring a secondary measured voltage by using a capacitive voltage divider and a sampling resistor R, accessing the voltage to a data acquisition processor for sampling, and tracing the frequency of the voltage; accessing a signal of a temperature sensor to the data acquisition processor, and computing the temperatures of measuring points; dynamically computing a divided voltage ratio of the capacitive voltage divider according to the temperature variation of the measuring points by using data acquisition device processing software so as to modify a transformation ratio error of the transformer; dynamically computing phase deviation according to signal frequency variation by using the data acquisition device processing software so as to modify a phase error; and outputting a digital sampling value through an optical fiber interface. The device is simple in structure, safe and practical; errors caused by manufacturing factors, temperature and signal acquisition circuits and the like can be effectively modified and restrained; and the measuring accuracy, temperature stability and transient performance of the electronic voltage transformer according to a capacitive voltage division principle are improved.

The invention discloses an anti-shake control system of a pure electric vehicle. The anti-shake control system of the pure electric vehicle comprises a motor controller, a MCU motor vector control system adopted by the motor controller comprises an active damping control module, the active damping control module is correspondingly connected with a decoding chip and a maximum torque current ratio control module in the MCU motor vector control system through circuits and an output port of a vehicle control unit, the active damping control module can receive a torque command Te _ ref output by the vehicle control unit and a motor rotating speed v output by the decoding chip, the active damping control module obtains a damping torque command Te according to a motor rotating speed vibration component vn and the torque command Te _ ref separated by the received motor rotating speed v, and transmits the damping torque command Te to the maximum torque current ratio control module, wherein thedamping torque command Te is equal to Te _ ref-K * vn and the K is damping coefficients. According to the anti-shake control system, by arranging the active damping control module, an oscillation signal of the system is separated, the damping is added to the system to inhibit oscillation of a transmission system, and the on-site effect is good.

The invention relates to a distributed active filter which comprises a sampling module, a CPU processing module, an IGBT compensation circuit and a monitoring system, wherein the sampling module is connected with the CPU processing module; the CPU processing module is connected with the IGBT compensation circuit; and the monitoring system is connected with the CPU processing module. Compared with the prior art, the invention has the advantages of flexible and accurate configuration, high reliability, high cost performance, convenient installation and debugging and the like, and has harmonic interference which can simultaneously compensate several lines.

The invention provides a hand-held CAN bus data analysis device comprising a processor, a CAN bus interface module, a power supply management module and a storage battery, wherein the processor is connected with the CAN bus interface module and the power supply management module; and the storage battery is connected with the power supply management module. The device collects signals from an external CAN bus through the CAN bus interface module and processes the signals in the processor, so that CAN bus communication can be carried out; the storage battery can provide power for the whole hand-held CAN bus data analysis device without an external power source, without being limited to the usage of a DC power source on a railway vehicle, and facilitating field debugging; and through the utilization of the power supply management module, voltage conversion and control can be performed on the voltage output by the storage battery, thereby meeting the need of the processor as well as the needs of other function modules connected with the processor. Besides, the device in the invention is a hand-held device; and the device is small in size and convenient to carry.

The invention discloses a vertigo diagnosis and treatment device for the otolaryngology department, which comprises a base, a rack, a vertical rotating mechanism, a rotating frame, a horizontal rotating mechanism, a diagnosis and treatment seat and a frame lifting mechanism for driving the vertical rotating mechanism to lift, the frame lifting mechanism is installed in the rack, a liftable part of the frame lifting mechanism is rotationally connected with a main rotating shaft of the vertical rotating mechanism, the frame lifting mechanism is in transmission connection with the main rotating shaft through a transmission mechanism, and when the main rotating shaft rotates, the descending distance of the vertical rotating mechanism driven by the frame lifting mechanism is equal to the ascending height variation of a pedal plate at the lower end of the diagnosis and treatment seat relative to the main rotating shaft. By the adoption of the device, a human body is closer to the base in height when being closer to the horizontal in the rotating process, possible injuries caused when a patient accidentally falls down are effectively reduced, the patient can be rescued when the device breaks down and suddenly stops, and the safety of the device during operation is improved.

The invention discloses an elevator Internet of Things terminal debugging method, a mobile terminal and a storage medium. The elevator Internet of Things terminal debugging method comprises the following steps: directly establishing wireless communication with an elevator Internet of Things terminal; acquiring terminal parameter data of the elevator Internet of Things terminal, and displaying theterminal parameter data on a display interface; obtaining in real time elevator Internet of Things terminal networking data and elevator operation data, wherein the connection state of the elevator Internet of Things terminal and the server is analyzed in real time based on the elevator Internet of Things terminal networking data, and a networking diagnosis result of the elevator Internet of Things terminal is obtained; based on the elevator operation data, analyzing in rel time the connection state of the elevator Internet of Things terminal and the elevator main control board, and obtaininga connection diagnosis result of the elevator Internet of Things terminal and the elevator main control board. The debugging efficiency is high, and the real-time interaction condition of the elevatorInternet of Things terminal, the server and the elevator main control board can be diagnosed.

The invention discloses a numerical control mobile power source. The numerical control mobile power source works as follows, first, a starting signal is triggered by a touch button of a touch button circuit to start up, after the start-up, each module is first initialized to be ready for work, and the initialization mainly includes a sleep circuit, the touch button circuit, a liquid crystal display circuit, an alarm circuit, a liquid crystal backlight circuit, a voltage sampling circuit and a current sampling circuit. After a circuit switch is turned on, the initialization is completed, and the program begins to enter a main working state. First, the voltage and current are collected through a voltage collecting circuit and a current collecting circuit, and a judgment is made on whether the output is connected with a load, or whether the touch button circuit is at work. The numerical control mobile power source of the invention has the functions of being portable and capable of use asa power bank, adopting long-life touch buttons and automatic shutdown, and the like, products can be conveniently debugged on the spot without plugging in 220V, and the numerical control mobile powersource can be used anywhere.

The invention discloses a gravity-based opening-closing in-place monitoring system of a high-voltage switch type device. The system comprises a monitoring host and position detectors that are arranged on operation rods of all switch type devices of a transformer substation and are used for detecting whether the opening and closing are carried out in place. Each position detector includes a hollow base plate; a hollow circular ring is arranged on the upper surface of the base plate; a gravity moving body that can move freely is arranged in the inner cavity of the hollow circular ring; two sensors are arranged in the inner cavity of the hollow base plate, wherein the two sensors correspond to the circular ring and are connected with the monitoring host; and the two sensors sense the position change of the gravity moving body in the inner cavity of the hollow circular ring and transmit the collected signals to the monitoring host, thereby determining whether the operation rod rotating shafts of the high-voltage switch type devices rotate in place. With the monitoring system, whether the opening and closing of the switch type device are carried out in place can be monitored precisely in real time and thus operation faults that a phenomenon that the opening and closing are not carried out in place can not be found timely and the like can be avoided.

The invention discloses a device for efficiently compensating three-phase unbalanced loads and reactive power, which includes: three-phase current and three-phase voltage sampling circuits of a three-phase power system, a power controller and different three-phase compensation unit. It is characterized in that the power controller controls each single-phase switch in the three-phase compensation unit with different topological structures separately according to the sampling results, so that it can realize both common compensation and single compensation; it can not only compensate reactive power, but also balance Active power; it can be used as both static compensation and dynamic compensation; it can not only adjust the ability of three-phase current, but also adjust the three-phase unbalanced voltage. The invention is suitable for the transformation and updating of the existing reactive power compensation device of the three-phase four-wire unbalanced load power system.

The invention relates to the field of robot research and engineering, particularly to a modular orthorgonal-structured snake robot. The modular orthorgonal-structured snake robot is composed of a plurality of joint modules; the inside of every joint module is provided with a driving system and a control system, and the joint modules are connected end to end in a 90-degree relative rotation mode; every control system is electrically connected with the corresponding driving system, and the neighboring joint modules are driven to rotate by the corresponding driving systems. By means of modular joints, joint strength and reliability can be enhanced; by means of a cylindrical case and a stable transmission system, high-strength operation can be ensured; powered by a steering engine, the snake robot can ensure integral power output; the outer cylindrical case is made of light materials to ensure smooth contact with the snake robot and the surroundings and meanwhile to package the internal parts of joints to avoid damage due to exposure.

The invention relates to a grid-connected control method and system for an auxiliary inverter of an urban rail train. The method is as follows: the TCMS system sends the auxiliary inverter start signal to the auxiliary Inverter: An auxiliary inverter detects that both 1500V and 380V AC buses have electrical signals within time T, then starts the auxiliary inverter within time T, sets it as the master, and sends auxiliary inverter The inverter bus activation signal is sent to other auxiliary inverters; if an auxiliary inverter detects the 1500V DC bus power signal and detects the auxiliary inverter bus activation signal, it will start at interval T 0 The auxiliary inverter is started internally, and the auxiliary inverter sends an auxiliary inverter bus activation signal to other auxiliary inverters; all auxiliary inverters of the train are started in the above manner. The invention greatly shortens the start-up time on the basis of ensuring the smooth start-up of the auxiliary inverter.

The invention provides a monitoring device of point-to-point communication equipment and a monitoring system having the monitoring device of the point-to-point communication equipment. The device comprises a first equipment interface which is connected with the communication interface of first communication equipment; a second equipment interface which is connected with the first equipment interface and the communication interface of second communication equipment; a data sampling module which samples the communication data between the first equipment interface and the second equipment interface; a data processing module which is connected with the data sampling module and processes the sampled communication data according to a preset communication protocol; and a communication module which is connected with the data processing module and external monitoring equipment and outputs the processed communication data to the monitoring equipment. The communication data of both sides of the point-to-point communication equipment are monitored through hardware and the monitored communication data are outputted so that modification of the software level and / or the hardware level can be avoided, the change of the communication data of the hardware level can be monitored and thus onsite debugging of the point-to-point communication equipment can be greatly facilitated.

The invention relates to a tail gas particle purifier of a diesel engine. The purifier comprises a gas inlet pipe connected with the diesel engine, and two branch purifiers connected to the gas inlet pipe. The branch purifiers are of the same structure. Each branch purifier comprises a branch gas inlet pipe, a butterfly valve is installed on the branch gas inlet pipe, the branch purifier is provided with a ceramic filter, an igniting electric heater is installed in front of the ceramic filter, and a temperature sensor for measuring the heating temperature is arranged in front of the electric heater; a pressure sensor and a pressure reference tube are installed on the gas inlet pipe; and a combustion-supporting gas pipe for conveying combustion-supporting gas is arranged between the branch gas inlet pipes and located behind the butterfly valves of the branch purifiers. The tail gas particle purifier of the diesel engine has the beneficial effects that 1, judgment of a regeneration point is conducted through the reference method, errors caused by the working condition, the type, the abrasion degree and other factors of the diesel engine can be counteracted, judgment of the regeneration point is accurate, and field debugging is convenient; and 2, the combustion-supporting gas required by combustion of particles during regeneration is from tail gas exhausted by the diesel engine, and the situation that the pressure of vehicle-mounted compressed air is decreased, and accordingly, the driving safety is affected is avoided.

The invention provides a general control bus extension device. The general control bus extension device is characterized by comprising a core control module, a general bus input circuit, a general bus output circuit and a power circuit, wherein the core control module provides a signal data processing service for the general bus input circuit and the general bus output circuit, and the general bus input circuit and the general bus output circuit provide data signal channels for the core control module. The core control module is composed of a CPU, a communication interface extension circuit and a signal buffer. A communication interface B of the CPU is used for directly conducting data processing on input bus signals through the signal buffer, and the CPU is used for conducting communication interface extension on the communication interface extension circuit through an interface C, interface allocation is conducted through the signal buffer, and therefore data are sent out. According to the general control bus extension device, the general bus input circuit, the general bus output circuit, the power circuit and the core control module are integrated, debugging is simple and construction is convenient.

The invention relates to the field of aerial work platform electric control systems, in particular to a leveling control system and method for an aerial work platform. The leveling control system comprises an information input unit used for collecting the state information of the aerial work platform, a control unit used for outputting a corresponding mechanical control signal according to the state information, and an execution unit used for driving a corresponding mechanical element to execute a control action according to the mechanical control signal, and a controller monitors the state of a whole vehicle in real time; in an amplitude variation process, the angle change condition of a large arm serves as a feedforward signal, control processing is conducted on the platform in advance, and then leveling is conducted again according to whether a current platform angle value meets a leveling requirement or not. Through the leveling control method, the leveling speed, stability and precision of the platform can be improved under the condition that no hardware cost is increased.

The invention relates to a backup power supply bus protection transformation system and a method thereof for an electric power system. The backup power supply bus protection transformation system comprises a bus protection current acquisition system I, a bus protection current acquisition system II, a bus protection device I, a bus protection device II and a bus connection section switch, whereinthe output end of the bus protection current acquisition system I is connected with the input end of the bus protection device I, and the output end of the bus protection current acquisition system IIis connected with the input end of the bus protection device II; the original bus protection device is transformed into two sets of bus protection devices through increasing buscouple CT current transformer, so that each section of bus is independently configured with one set of bus protection, the transformation keeps the wiring of the secondary circuit of the original protection screen unchanged, the original bus protection in the screen body is removed, and an additional bus protection device for the I and II section of the bus is installed. The two transformed section of bus protection isoperated independently and without mutual interference, which improves the system operation stability, further narrows the power failure range of the maintenance, and can improve the safety of the backup power supply bus protection system, and is convenient for inspection operation and has the advantage of flexibility.

The invention discloses an in-vehicle infotainment device debugging method, an in-vehicle infotainment device applying the corresponding in-vehicle infotainment device debugging method, and a server. When being applied to a vehicle-mounted terminal, the vehicle-mounted terminal debugging method comprises the following steps: establishing communication connection with debugging equipment through a USB interface with user permission on a vehicle-mounted terminal; sending a debugging verification request to a preset server; and when verification passing information sent by the server is received, opening a debugging function to debug the vehicle machine through the debugging equipment. When the in-vehicle infotainment device debugging method is applied, the debugging device can establish communication connection with the in-vehicle infotainment device through a USB interface with user permission on the in-vehicle infotainment device, a debugging verification request is sent to a preset server, when verification passes, the debugging function of the in-vehicle infotainment device is started, and the in-vehicle infotainment device is started. The problem that complex debugging can be achieved only by connecting to an interface with open permission after the vehicle is disassembled is avoided, field debugging is facilitated, permission control of the vehicle machine in a normal state can be guaranteed, and use safety is guaranteed.

The invention provides a heartbeat method based on a TC wireless networking communication product, and the wireless networking comprises wireless control end equipment and at least one wireless receiving end equipment. The heartbeat method comprises the steps that (1) the wireless control end equipment distributes heartbeat information to the wireless receiving end equipment according to a protocol; (2) the wireless control end equipment and all the wireless receiving end equipment unify time reference; (3) under the same time reference, each piece of wireless receiving end equipment calculates heartbeat time sent by the corresponding wireless receiving end equipment in a sequence mode according to the address and the heartbeat interval of the wireless receiving end device; (4) all the wireless receiving end equipment actively and sequentially sends heartbeats to the wireless control end equipment according to heartbeat time in a self-number-reporting mode; (5) after receiving the heartbeat sent by the wireless receiving end equipment every time, the wireless control end equipment replies data to the corresponding wireless receiving end equipment, and bidirectional confirmation is carried out. According to the invention, the problem of heartbeat time sequence is considered when the product accesses the network, so that the problem of co-frequency interference is effectively avoided.