76results about How to "Avoid false triggering" patented technology

Threshold-based zero-crossing detection is provided. A power phase threshold detector detects when absolute value of a voltage level of the electrical power rises above a non-zero voltage threshold and outputs a zero-crossing signal to a controller to indicate occurrence of the zero-crossing. Delaying the zero-crossing signal to the point when the absolute value of the voltage level of the electrical power rises above the non-zero voltage threshold ensures completion of the zero-crossing of the power phase prior to signaling the controller. The controller provides signals to a switching circuit for controlling switching of electrical power to a load based on the zero-crossing indications.

The invention discloses a control system for detecting safety areas by combining an infra-red technology and an ultrasonic technology, relating to a safety area detection system which combines an ultrasonic sensing technology and an infra-red sensing technology with computer software and single-chip computer programming control. The control system for detecting safety areas by combining an infra-red technology and an ultrasonic technology comprises a PC microcomputer, a main controller and a sensor, wherein a control circuit of the sensor comprises an ultrasonic transmitting power amplification circuit, an ultrasonic gradient grading collection circuit, a pre-amplification circuit, an A / D conversion circuit, a follow-up grading collection circuit, an infra-red modulation transmitting circuit, an infra-red receiving demodulation circuit, an infra-red / ultrasonic detection judging circuit and an amplification shaping output circuit. The sensor integrated by infra-red sensing control and ultrasonic detection compelled dual-detection has high reliability, enhances the dynamic anti-interference property of an ultrasonic sensor, and completely avoids spurious triggering action caused by the interference of working environment in actual application.

An electrostatic discharge protection device that includes a plurality of voltage drop elements, an impedance element, a driving circuit, and a clamping circuit is provided. The voltage drop elements are electrically connected in series between a first line and a node, and the voltage drop elements are configured to define an activating voltage. If a signal from the first line is greater than the activating voltage, the voltage drop elements conduct the first line to the node in response to the signal from the first line. The impedance element is electrically connected between the node and a second line. The driving circuit amplifies a control signal from the node and accordingly generates a driving signal. The clamping circuit determines whether to generate a discharging path between the first line and the second line according to the driving signal.

The present invention relates to a method and system for detecting a vehicle rollover or dangerous situations that may precede a rollover of a vehicle. The method comprises the steps of (a) measuring the set of input signals including at least vehicle velocity, vehicle steering angle, vehicle lateral acceleration, and vehicle roll rate; (b) integrating the vehicle roll rate to obtain the vehicle roll angle increment; (c) determining the vehicle state on the basis of the input signals; (d) determining the vehicle estimated lateral acceleration, corresponding to the vehicle true roll angle, on the basis of at least the vehicle state, vehicle lateral acceleration and the centrifugal acceleration; (e) determining the vehicle estimated roll angle on the basis of at least the vehicle roll angle increment, the vehicle estimated lateral acceleration and the vehicle state; and (f) generating an output activation signal determining a possibility of rollover of the vehicle, as a function of at least: vehicle estimated roll angle and the vehicle roll rate.

The method includes: the digital video encoder collects the video picture of vehicle, and saves it into FIFO memory; meanwhile the high speed digital signal processor scans and collects the data rows, and saves the feature point of each row; after scanning, the quick license plate location algorithm is used to make location for the license plate in term of the feature data; compares with the original image feature of the vehicle saved in FIFO memory to correctly locate the license plate, and further to trigger the video picture.

The invention discloses an ESD (Electro Spark Detector) power clamping circuit and relates to the technical field of ESD protection of a semiconductor integrated chip. The ESD power clamping circuit comprises a power pin VDD, a grounded pin VSS, a static discharging detection structure and a clamping component, wherein the static discharging detection structure and the clamping component are connected between the power pin VDD and the grounded pin VSS; the static discharging detection structure further comprises a capacitance-resistance coupling structure and a D latch structure; the capacitance-resistance coupling structure is composed of a capacitor and a resistor serially connected between the power pin VDD and the grounded pin VSS and is used for detecting and outputting a static discharging voltage on the power pin VDD or the grounded pin VSS; and the D latch structure is connected between a joint of the capacitor and the resistor and a grid electrode of a clamping transistor andis used for sending a voltage outputted by the capacitance-resistance coupling structure to the clamping component. The ESD power clamping circuit provided by the invention has a small layout area and can be used for efficiently preventing a spurious triggering phenomenon.

The invention relates to a self-triggering voltage setting method of a spark gap of a 500kV series compensation system. The spark gap of the series compensation system structurally comprises a self-triggering main gap device G1, a self-triggering main gap device G2, a sealing gap device TRIG1, a sealing gap device TRIG2, a current limiting resistor R1, a current limiting resistor R2, a pulse transformer T1, a pulse transformer T3, a high-insulation pulse transformer T2, a high-insulation pulse transformer T4, a voltage-sharing capacitor C1, a voltage-sharing capacitor C2, a voltage-sharing capacitor C3 and a voltage-sharing capacitor C4. The self-triggering voltage setting method of the spark gap of the series compensation system includes the steps that the single flashover gap distance of the main gap device G1 and the single flashover gap distance of the main gap device G2 are adjusted according to 1.8p.u. series compensation rated voltages, and the flashover gap self-triggering voltages are made to be higher than the sum of the self-triggering voltages of two triggering gaps on a parallel branch. By means of the self-triggering voltage setting method of the spark gap of the 500kV series compensation system, self-triggering of the spark gap in the operating process of the series compensation system can be effectively reduced, the problem of self-triggering voltage reduction caused by dirt accumulation on the surface of a hemispherical flashover gap graphite electrode is solved, and thus the self-protection function of the self-triggering voltages of the series connection spark gap can be achieved.

A method for switching off communication screen to avoid false triggering based on a mobile terminal and system employing the same are described. The method comprises: controlling the mobile terminal to switch off the touch-screen and enter a communication gesture mode when the mobile terminal is detected to be in the communication mode and there is no touch operation in the mobile terminal during a predetermined interval; and acquiring a gesture operation instruction of a user and controlling the mobile terminal to perform a plurality of corresponding operations based on a preconfigured gesture operation instruction. The present invention switches off the communication screen to avoid false triggering.

The invention provides a method, a device and a system for triggering data processing. The method comprises the following steps that a first data processing device receives a radio frequency signal sent by a second data processing device; the first data processing device computes a distance parameter between the first data processing device and the second data processing device according to the radio frequency signal; and the first data processing device judges whether the first data processing device is triggered to carry out data processing according to the distance parameter. According to the technical scheme, the distance parameter between the first data processing device and the second data processing device is computed according to the received radio frequency signal, and the first data processing device judges whether the first data processing device is triggered to carry out data processing according to the distance parameter, so that the error-free triggering is avoided, the power consumption for false triggering is reduced, and the application service life is prolonged.

The invention relates to the technical field of automobiles, in particular to a method for opening an automobile door, an automobile control system and an automobile. The automobile control system includes distance measuring devices arranged around the automobile door and a controller in the automobile; the controller is used for controlling the distance measuring devices to start detection at a preset detection angle to obtain a detection result, wherein the preset detection angle is determined based on a preset area in which the automobile door is opened; based on the detection result, it isdetermined that whether more than one obstacle exists in a detection range corresponding to the detection angle or not; when it is determined that more than one obstacle exists, it is determined thatwhether the more than one obstacle is located in the preset area or not; and when it is determined that the more than one obstacle is located in the preset area, a control instruction is generated tocontrol the opening of the automobile door, and then the preset area in which the automobile door is opened is accurately positioned.

The invention relates to a fully-automatic zero adjustment electronic type ballistic galvanometer and a zero adjustment method thereof. The fully-automatic zero adjustment electronic type ballistic galvanometer and the zero adjustment method thereof have deviation compensation automatic correction capacity and are simple in an adjustment process. The ballistic galvanometer of the invention comprises an integrator, a data acquisition and zero adjustment circuit, a signal detector and a display; the integrator includes a high-open-loop-gain low-drift operational amplifier AD708, an integrating resistor and an integrating capacitor; the anti-phase input end of the AD708 is connected with one end of the integrating resistor R1; the other end of the R1 is adopted as the input end of the integrator; the data acquisition and zero adjustment circuit includes a single-channel bipolar voltage input serial output A / D converter, a serial input single-channel bipolar voltage output D / A converter, an alternative bidirectional analog switch CD4053 and a single-chip microcomputer; the signal detector includes a follower, two comparators LM319 and a monostable trigger which is made of the CD4013; the output end of the monostable trigger is connected with the interruption request input end of the single-chip microcomputer; the display receives data through a serial port and displays the data, wherein the data are sent by the single-chip microcomputer; the zero drift of the integrator is the zero drift of the whole device.

The invention discloses a refrigerator controller touch button sampling method, comprising steps of system initialization and main program entering. System initialization comprises four steps: initializing a port, setting a reference level of a comparator, setting a timing interruption interval by a timer 0, and setting a timer 1 to be a counter, wherein a processing program of arranging a timinginterruption interval by the timer 0 comprises: determining if the time interval reaches 2ms, carrying out button sampling, determining if the time interval reaches 5s, self-repairing subprogram and carrying out button output. A calculating procedure of the button sampling is combined with IIRfilter algorithm to calculate counter value of each button. The refrigerator controller touch button sampling method can improves sensitivity in touch button operation, preventing spurious triggering.

The invention provides an intelligent lamp control system and a lamp, relates to the technical field of intelligent lamp control, and aims to solve the problem in the prior art that a lamp may be triggered by mistake. The invention specifically relates to an intelligent lamp control system, which comprises a lamp and an intelligent device wirelessly connected with the lamp. The intelligent device comprises a main control switch board and a lamp control board connected with the main control switch board. The lamp control board is used for receiving an instruction, replying to the instruction and controlling the lamp. The main control switch board is used for acquiring a voice or action signal and transmitting the voice or action signal to the lamp control board. The main control switch board is equipped with a time control module, a voice acquisition module, a voice and semantic recognition module, and a trigger module. The invention further specifically relates to a lamp, which comprises a lamp bulb and a lamp holder. The lamp holder is equipped with two keys which are connected with the time control module separately. The lamp holder is further equipped with three indicator lamps for displaying normal work, abnormal work and reset of the lamp respectively. By using the intelligent lamp control system and the lamp of the invention, the problem that a lamp goes on due to mistaken trigger is avoided, and energy consumption is reduced.

The invention aims to provide a delay circuit for an input under-voltage protection circuit. The delay circuit comprises a sampling voltage setup module and a pulse output control module. The sampling voltage setup module sets up a sampling voltage Vp by enabling a voltage VFB of an output voltage feedback end to follow up a voltage Vss of a soft starting end; the pulse output control module receives the sampling voltage Vp and compares the sampling voltage Vp with a set value prior to outputting signals to control on / off of a GATE end. The delay circuit for the input under-voltage protection circuit has the advantages that before finishing of soft starting and after arrival of under-voltage protection signals, the GATE end is free of output, and accordingly an output voltage of a power source cannot rise instantly, and influences on post-stage circuits due to false triggering can be avoided.

The invention discloses a wear detection circuit, a neck massage device and a wear detection method. The wear detection circuit comprises a first input module, a second input module and a comparison module, wherein a first end of the first input module is used for receiving an electrode drive power supply signal; the first end of the second input module is used for receiving an electrode drive detection signal; a first input end of the comparison module is connected with a second end of the first input module; a second input end of the comparison module is connected with the second end of thesecond input module; and the comparison module is used for determining a wear state according to the comparison result of the electrode drive power supply signal and the electrode drive detection signal and outputting a wear detection signal. According to the circuit, the accuracy of detecting the wear state of the neck massage device can be improved, the phenomenon of false triggering when the neck massage device is not worn is avoided and the user experience is improved.

The invention relates to an assembly line sensor displacement detection device with an automatic early warning function, which comprises a machine body, and is characterized in that a fastening plateis movably inserted into the inner wall of a mounting base, a friction chain belt is mounted on the fastening plate through a roller shaft, a protruding plate corresponding to a rotating plate is fixedly connected to the roller shaft, a striking rod is fixedly connected to the bottom of a sliding base, a compressed spring is mounted between the sliding base and a limiting ring, a baffle is movablyinserted below the limiting ring, an inserting rod corresponding to the baffle is fixedly connected to the sliding base, and an alarm bell is fixedly mounted at the bottom of the mounting base. Whena sensor main body deflects left and right, the fastening plate is extruded to move, and the fastening plate extrudes the sliding base to move downwards; when the sensor main body slides downwards, the friction chain belt and the roller shaft are driven to drive the protruding plate to rotate, the protruding plate extrudes the sliding base to move downwards through the rotating plate, the downwards-moving sliding base causes deformation of the compressed spring for energy storage, then the inserting rod extrudes the baffle to move away, the striking rod strikes an alarm bell to give an alarm,and workers are reminded to conduct inspection and maintenance in time. The device is simple in structure is simple and convenient to use.

The invention discloses a steering wheel touch switch structure which comprises a control circuit board, a touch panel, a touch detection device and a pressure detection device which are arranged on aswitch shell, and the touch detection device is arranged on the inner bottom surface of the touch panel. The pressure detection device comprises a pressure sensing part arranged on the control circuit board, and a driving rod correspondingly arranged on the inner bottom surface of the touch panel and is connected with the pressure sensing part. By using the technical scheme, only when the touch detection device and the pressure detection device are triggered together, the control circuit board can confirm that the touch function is effective, and mistaken touch phenomenon can be effectively prevented from occurring. The touch panel with the structural design does not generate pressing stroke amount when being stressed at any position, and is more compact in structure, the touch panel is prevented from shaking, the structural stability is good, the use hand feeling is better, the use performance of the steering wheel switch is improved.

The invention discloses a touch key, a steering wheel assembly and an automobile. The touch key comprises a housing; a touch panel assembly fixed on the shell and matched with the housing to define amounting space; an actuating connecting piece connected with the inner peripheral wall of the touch panel assembly; a supporting piece connected with the inner peripheral wall of the touch panel assembly; an actuator mounted in the mounting space; a signal processing circuit comprising a pressure sensor arranged on the supporting piece; and a processor electrically connected with the signal processing circuit and the actuator. When the touch panel assembly is pressed, the supporting piece generates elastic deformation, so that the pressure sensor generates a pressing electric signal, the signal processing circuit processes the pressing electric signal into a readable electric signal, the processor obtains a pressing pressure value according to the readable electric signal, and when the pressing pressure value is not smaller than a preset pressure value, the actuator adsorbs and desorbs the actuation connector to drive the touch panel assembly to vibrate. According to the technical scheme, the touch key has the functions of vibration feedback and mistaken touch prevention.

The invention provides a damage early warning device for an electronic commerce computer. The damage early warning device includes a case, a baffle plate is movably mounted in the main base through atension spring; tempered glass is fixedly connected to the position, located below the baffle, in the main base; a collision plate is movably mounted on the left side of the baffle through a pressurespring; an alarm bell is fixedly installed on the right side of the baffle, a pricking pin is fixedly connected to the right side of the sliding plate, a spherical plate is movably installed below thesliding plate, a clamping plate inserted into the spherical plate is fixedly connected to the left side of the sliding plate, and a pushing spring is installed on the left side of the clamping plate.When the case shakes drastically or violently, the spherical plate shakes up and down along with spherical plate, and under the action of a pushing spring, a sliding plate moves rightwards rapidly, the tempered glass is broken by pricking needles, then the baffle is pulled by a tension spring to move downwards, the baffle and the collision plate are staggered, the collision plate collides with analarm bell under the pushing of a pressure spring, the alarm bell gives out alarm sound, and workers can handle the situation in time conveniently.

The invention relates to the technical field of digital products, and discloses a protection device with a digital product drowning rescue function. The device comprises a shell, two packaging bags are filled with citric acid powder and baking soda powder correspondingly, an air bag is fixedly mounted at the top of the shell, a pricking pin is slidably inserted into an air cavity, an inner disc and an outer disc are rotatably connected to the lower portion of the interior of the shell, and a ball is mounted in the inner disc through a spring. When the digital product falls into a river, underthe effects of gravitational acceleration and inertia, when a ball is in contact with a contact type switch, an electromagnet pushes the pricking pin to move leftwards to prick the two packaging bags,a sealing gasket is knocked open, river water flows in and makes contact with citric acid powder and baking soda powder to generate a large amount of gas, the air bag expands, the digital product canfloat on the river, people can fish the digital product in time conveniently, and the problem that the digital product sinks to the bottom of the river and is not easy to retrieve after accidentallyfalling into the river is effectively solved.

The invention discloses a face recognition system based on smart city and an operation method thereof. The system comprises a recognition computer, a supporting stand column and an information comparison terminal, the recognition computer is fixedly installed at the upper end of the supporting stand column, and network cameras are fixedly connected to the side wall, close to the upper end, of the supporting stand column at equal intervals in a surrounding mode; a sound receiver is fixedly mounted on the supporting stand column below the position where the network camera is located; and a face recognition system is loaded in the recognition computer. According to the invention, public safety problems in the environment where the system is located are recognized, related personnel can trigger the face recognition module through sound help seeking and transmit the information to a mobile phone terminal carried by an operator on duty, the operator on duty can quickly know the information, and meanwhile, the position positioning module sends the site position to the map display module, so that the system is convenient to use. An operator on duty can quickly arrive at the site for processing by depending on the position displayed on the map display module, and the public security safety protection effect is improved.

This invention discloses a voltage tracking or an embedded circuit, which specifically relates to semiconductor testing field. The voltage tracking or the embedded circuit comprises the differential amplifier circuit, the constant current source circuit, the constant current source control circuit, the constant current source driving circuit and the constant-current power amplifier circuit. The differential amplifier circuit at the input terminal as a pre-amplifier converts the voltage error signal to current signal. The current signal from the constant current source control circuit and constant current from the constant current source generates the circuit execute current proportioning controlling operation to generate constant current source signal. The constant current source signal flows into the constant current source driving amplifier circuit and constant current source power amplifier circuit respectively.

The invention relates to a multi-button detection device and a detection method; a controller uses each test port to respectively output high level to buttons of the corresponding line, controls each acquisition port to be grounded through a corresponding inner pull down resistor and in a pull down state, and detects column signals outputted by buttons of the corresponding column and received by the acquisition ports; the controller detects the column signals to be greater than 0 voltage, keeps the acquisition ports with column signal greater than 0 voltage to be in the pull down state, controls test ports to output high level line by line, respectively detects column signals outputted by the buttons of the corresponding column and received by the pull down acquisition ports again, and obtains a button detection result according to the repeatedly received column signals. The method and device can combine tests port with acquisition ports so as to scan the button module; the controller can control the corresponding acquisition ports to be in the pull down state when column signals are received, thus preventing conflictions formed by simultaneously triggering buttons of different columns from affecting the signal detection, preventing mal-trigger phenomenon, and reducing detection cost.

The invention relates to the technical field of underwater products, in particular to a power-on device applied to underwater products. The invention comprises afemaleconnector and a male connector. The male connector is provided with a first power supply positive electrode pin and a first power supply negative electrode pin for charging, and the female connector is provided with a second power supply positive electrode pin and a second power supply negative electrode pin. As that male connector and the moth connector are mated, A first power supply positive pin is electrically connected to asecond power supply positive pin. the first power supply negative electrode pin is electrically connected with the second power supply negative electrode pin, the first ID pin is electrically connected with the second ID pin, and the second power supply positive electrode pin and the second ID pin both output a high-level detection unit to turn on the power supply of the underwater product according to the detected high-level signal of the second ID pin; As that invention does not need to open more hole, only one hole is opened, the failure probability is greatly reduced and the key is canceled, and the phenomenon that the key is mistakenly triggered due to the influence of the water pressure is avoided by adopting a twisting and rotating mode.

The invention provides a self-adaptive chip automatic testing method. The method comprises the following steps: acquiring a chip test instruction sent by a test base station through an SPI; triggering the chip to run a chip self-test program according to the chip test instruction to obtain a test result; and feeding the test result back to the test base station through the SPI. The method can relate to technologies of communication, artificial intelligence, chip testing and the like, and the method can perform FT comprehensive testing on the chip and improve the factory yield of the chip.

The application discloses a GOA circuit over-current protection detection circuit, the over-current protection detection method thereof and an electronic device; the GOA circuit over-current protection detection circuit comprises a logic control module and a level shift module; a special picture is used as a preset signal in advance, current data and pixel data of the special picture are stored into a logic control module; whether the input signal is consistent with the preset signal or not is judged through comparison, and different overcurrent protection parameters are adopted according to the judgment result, so that the phenomenon of false triggering of GOA circuit overcurrent protection under a special picture can be prevented, and the effect of overcurrent protection of a liquid crystal display panel is achieved on the basis of preventing false triggering.

The invention discloses an electronic picture mirror system. The system comprises a controller, a liquid crystal display screen, mirror glass and a human body recognition device; the liquid crystal display screen is attached to the back surface of the mirror glass; the controller is connected with the liquid crystal display screen; the human body recognition device is used for judging whether a person is in front of the mirror glass, and sending person presence information to the controller; the controller is used for turning off the backlight module set of the liquid crystal display screen after receiving the person presence information; the human body recognition device comprises an ultrasonic distance sensor and a human body infrared sensor; and the ultrasonic distance sensor comprisesan ultrasonic vibration sheet, a microphone, a transmitting circuit, a receiving circuit, and a single-chip microcomputer. According to the electronic picture mirror system of the invention, the humanbody recognition device is adopted; ultrasonic distance measurement and human body infrared induction are adopted to realize double recognition; and therefore, the high possibility of the false triggering of an existing electronic picture mirror system can be avoided, and the electronic picture mirror system of the invention is more stable.

A pen type safe blood taking needle is composed of a protective cap, a protective sleeve, a handle, a needle tube, a needle base, a spring, a blood blocking sleeve and a needle holder. An observationwindow is formed in the upper section of the needle seat, the protective sleeve is hidden in the handle, and the handle and the needle holder are mutually embedded and fixed; a protruding point is arranged on the outer side of the lower end of the protective sleeve, a warped part extending downwards and outwards is arranged on the opposite side of the protruding point, a pair of barb-shaped locking parts is arranged on the two sides of the protruding point, the locking parts can penetrate through opposite holes in the needle base wafer to be fixedly embedded in the needle base, and the springis compressed in a space formed by the needle base and the protective sleeve. During blood collection, the blood collection tube is inserted into the needle holder cylinder, so that the blood collection needle pierces the blood collection tube rubber plug, the blood collection tube cap can abut against the locking plate to move forwards, and locking of the spring is released; after blood samplingis completed, the spring resets to enable the protective sleeve to synchronously move forwards to cover the puncture needle tube and to be locked to prevent the puncture needle tube from being exposedagain while the needle is pulled out. The disposable puncture needle is simple in structure, convenient, safe, reliable and capable of being destroyed after being used, eliminating bloodstain splashing caused by retraction of the needle tube, eliminating puncture injuries and protecting medical staff.

An electric nail gun comprises a body for accommodating at least one nail needle, a handle, a nail striking mechanism and a safety mechanism; the handle is movably connected with the body and is provided with a moving part, and the moving part moves relative to the body between an initial position and an unlocking position; the nail striking mechanism comprises a striking mechanism and a trigger switch, the striking mechanism is electrically connected with a power supply mechanism and is used for striking the nail needles in the nail striking direction, the trigger switch is arranged on the handle and is used for driving the handle to strike the nail needles, when the trigger switch is in a nail striking mode, the trigger switch is used for driving the striking mechanism to strike the nail needles, and when the trigger switch is in a locked mode, the trigger switch is closed; the safety mechanism is arranged between the body and the handle and is electrically connected with the trigger switch, when the moving part is located in the initial position, the safety mechanism is in a locked state to drive the trigger switch to be in the locked mode, and when the moving part is located in the unlocking position, the safety mechanism is in an unlocked state to enable the trigger switch to be in the nail striking mode; the direction from the initial position to the unlocking position is defined as the moving direction, and the included angle between the moving direction and the nail striking direction is smaller than 90 degrees.