45results about How to "Guaranteed detection" patented technology

The invention discloses an obstacle information acquisition method, a laser pulse transmission method and a laser pulse transmission device. The laser pulse transmission method comprises the steps of:transmitting a first laser pulse at a first moment; and transmitting a second laser pulse at a second moment, wherein peak power of the first laser pulse is less than that of the second laser pulse,a time interval between the second moment and the first moment is longer than T, and the T is a time length from a moment that the laser pulse is transmitted to a moment that a laser pulse echo signalreflected by a near-field obstacle is received. By adopting the obstacle information acquisition method, the laser pulse transmission method and the laser pulse transmission device, since the power of the first laser pulse is small, stray light cannot cause voltage saturation of a detection circuit, thus the first laser pulse reflected by the near-field obstacle can be detected, thereby effectively solving the problem of measurement blind area of the near-field obstacle caused by the stray light inside a laser radar at low cost; and since the signal intensity of the second laser pulse is high, normal detection of a far-field obstacle can be guaranteed.

A method for obtaining obstacle information, a laser pulse emitting method and a device, the laser pulse emitting method includes: emitting a first laser pulse at a first moment; emitting a second laser pulse at a second moment, the first laser pulse The peak power of a laser pulse is less than the peak power of the second laser pulse, and the time interval between the second moment and the first moment is greater than T, where T is the moment when the laser pulse is emitted and the reflection of the near-field obstacle is received The duration between the moments of the laser pulse echo signal. Applying the above scheme, since the power of the first laser pulse is small, stray light will not cause the voltage saturation of the detection circuit, so the first laser pulse reflected by the near-field obstacle can be detected, thereby effectively solving the problem of laser light at a lower cost. The measurement blind area of ​​near-field obstacles caused by stray light inside the radar; at the same time, due to the strong second laser pulse signal, the normal detection of far-field obstacles can be guaranteed.

The invention discloses a vehicle anti-collision early warning system based on laser radar ranging. The vehicle anti-collision early warning system comprises 2n laser radar emitters and 2n optical lenses, wherein n is a natural number. Each laser radar emitter is paired with one optical lens to form a signal receiving and transmitting group. Each signal receiving and transmitting group is arranged along the central axis of a vehicle. An acute angle is formed between each optical lens and the vertical direction of the corresponding laser radar emitter. The laser radar emitters on one side of the central axis emit laser signals, and the laser signals are scattered after contacting with objects in places ahead and are received by the optical lenses at corresponding positions on the other side of the central axis. The vehicle anti-collision early warning system has the advantages that through intelligent anti-collision active early warning based on accurate laser radar ranging, users can get better experience effects; double-lens design is adopted, the lenses are treated specially in terms of optical design, and high-accuracy optical imaging and detecting and lens structure design applicable to complex in-vehicle environments can be guaranteed.

The invention relates to the field of touch control and discloses a system for achieving capacitance detection and electromagnetic detection. A transverse row of wires and a vertical row of wires included by a sensing antenna multiplex array are located in a touch area of a touch control screen panel, a capacitance and electromagnetic touch control chip is provided with a TX end, an RX end and an EM Detect end, one end of the TX end, one end of the RX end and one end of the EM Detect end are respectively provided with one chip lead in a multiplex mode, and the other end of the TX end, the other end of the RX end and the other end of the EM Detect end are connected with one end of the transverse row of the wires and one end of the vertical row of the wires. When capacitance touch detection is carried out on the system, all switches in a switch array are turned off, and the transverse row of the wires and the vertical row of the wires constitute sensors of a capacitance screen; when electromagnetic touch detection is carried out on the system, all the switches are turned on, and the transverse row of the wires and the vertical row of the wires constitute antenna loops of an electromagnetic screen; when a part of the switches are turned off and a part of the switches are turned on, a part of the transverse row of the wires and a part of the vertical row of the wires constitute the sensors of the capacitance screen, and a part of the transverse row of the wires and a part of the vertical row of the wires constitute the antenna loops of the electromagnetic screen. Compared with the prior art, time division multiplex access of capacitance detection and electromagnetic detection is achieved through one set of sensing antennas on the single chip.

The invention discloses a positioning method and a device of a multimode GNSS system, a storage medium and a receiver. The positioning method comprises the following steps: measuring a pseudo-range observation quantity based on the received satellite signal, and calculating a receiver clock difference of each positioning system in the multimode GNSS system; using the receiver clock difference of each positioning system to calculate the inter-system time delay between each positioning system during the measurement when the receiver clock difference of each positioning system is reliable; usingthe inter-system time delay as an observation quantity and combining the pseudo-range observation quantity to detect and exclude the abnormal satellite when the inter-system time delay is stable; andusing the pseudo-range observation quantity of the remaining satellites after excluding the abnormal satellite to obtain the position information of the receiver . According to the positioning methodof the multimode GNSS system, the positioning accuracy of the receiver can be improved in a severe environment.

The invention relates to a sensor arrangement for detecting ambient conditions, in particular for a motor vehicle, with at least one carrier plate and optical elements arranged on this carrier plate, wherein several of the optical elements are arranged around a shared central region on the carrier plate, and at least two of the optical elements arranged around the central region exhibit primary action axes. These primary action axes are adjusted at a predetermined angle relative to the carrier plate, wherein the primary action axes are directed toward the shared central region. Additional sensors arranged on the carrier plate include a rain sensor, a solar sensor as well as various light sensors, which preferably are arranged on receiving surfaces of the carrier plate.

The invention discloses a vehicle safety integrated monitoring system for running trains. The system comprises a rail-side multi-sensor fieldbus intelligent detecting unit, a multi-element information processing machine transmit computer unit, a rail-side wireless communication unit and a detection station monitoring information control terminal. The system integrates multiple detection functions, achieves intelligent multi-sensor information fusion, conducts diversification parallel processing on various parameters, combines a wireless communication mode, greatly expands monitoring space, comprehensively improves system monitoring capacity, and enables the monitoring success rate to be greatly improved. The system can be widely used in harsh working environment of the two sides of railway steel rails, and can be maintained conveniently in later period. The detection station monitoring information control terminal uploads processed data to a superior vehicle safety monitoring center and a system cloud processing unit, instant sharing of information in each unit is achieved, and accuracy, reliability, instantaneity and stability of each vehicle safety parameter data of the running trains are ensured.

The invention a snake-like inspection robot. The snake-like inspection robot comprises a body structure and an electrical control part which are matched with each other, and the body structure comprises a snake head, a snake body and a snake tail which are sequentially connected through an orthogonal structure; the snake head is provided with a camera module and a Raspberry Pi part which are connected; the snake body comprises a driving wheel, a driven wheel, a plurality of machine bodies and joints, the machine bodies and the joints are connected through orthogonal structures, each machine body comprises a fourth digital steering engine and a fifth digital steering engine which are used for controlling the snake body to move in different dimensions under the orthogonal structures, the fourth digital steering engine is connected with a fourth steering engine model matched with the fourth digital steering engine, the fifth digital steering engine is connected with a fifth steering engine model matched with the fifth digital steering engine, the fourth digital steering engine and the fifth digital steering engine are both connected with a joint, and a plurality of screw holes matchedwith the machine body are formed in the joint; and the snake tail is provided with a stepping motor, an electrical control part and a power module which are connected, and the electrical control partis composed of a motor control module and a steering engine control panel which are matched. The inspection work of a cable trench is completed by imitating the structural characteristics and the movement mechanism of snakes.

The invention relates to shipbuilding, in particular to submarine vehicles (1)and can be used for salvage and rescue operations on submarines (11). The inventive submarine escape vehicle (1) comprises a housing (2, 3), a movement control system (6), a suction chamber (7) with a thrust collar (9)mounted on the housing(2) of the submarine escape vehicle (1), an ancillary system (5), a lighting system (13), an optical-television system (12)connecting with a television information displaying device (15). The body of the suction chamber (7) comprises a movable ball-shaped belt (8). The optical-television system used for remotely detecting the damaged object (11), are mounted on the body (3) of the SEV (1) around the suction chamber (7) in such a way that multi-angle stereo-pairs are formed. The lighting elements (13) is provided with a light markers (14) which are fixed to the thrust collar (9). The television information displaying device (15) is connected to the ancillary system (5) by means of the movement control system (6). Said invention improves the operating characteristics of the submarine escape vehicle (1).

A distributed power supply system is configured to execute a process for determining whether or not to permit a diagnostic process in such a manner that it is determined whether or not a difference between a set upper limit value and an actual measurement current value is not less than a load current value, the set upper limit value being a predetermined upper limit value set with respect to a detected current of a current sensor, the measurement current value being detected by the current sensor in a state where the diagnostic process is not executed, and the load current value being a value of a current flowing from a commercial power utility to a power load during execution of the diagnostic process; and if it is determined that the difference is not less than the load current value, the controller permits the diagnostic process.

The objective of the invention is to provide a cable projection injury detection device. The objective of the invention is to solve the technical problem of injury projection detection of an outer surface of a cable. The cable projection injury detection device comprises a control system, and a detection length regulation system, a detection parallelism regulation system and a cable flatness detection system which are electrically connected with the control system. The detection length regulation system arranged in the device provided by the invention can achieve detection of cables of different lengths; the detection parallelism regulation system can achieve that cable clamping mechanisms at two ends clamp two ends of the cable at the same height so as to ensure the measurement accuracy of the cable flatness detection system for the to-be-measured cable; and the cable flatness detection system can perform detection in different directions of the surface of the cable so as to ensure the detection of the projection faults of the surface of the cable.

The invention relates to a weather radar blind compensation smoothing processing system, which comprises a weather radar signal processor, a radar wave generating system, a radar complete machine timing control system and a terminal. The invention also discloses a processing method for the weather radar blind compensation smoothing processing system, which comprises the following steps: S1, presetting a radar detection range, and calculating a wide pulse parameter by a terminal according to parameters obtained by radar detection and a radar equation; S2, in a preset detection range, determining the detection capability of a joint, namely a first smoothing processing, for the range which can be detected by the radar; and S3, in the preset detection range, for the undetected blind area, calculating the detection capability of a blind compensation joint according to the pulse width set in S2, namely, a secondary smoothing processing. The weather radar blind compensation smoothing processing system has the advantages that the detection capability difference of the wide and narrow pulses at the blind compensation joining distance is not more than 1 dBZ, the echo gradient is smooth, theblind area is effectively detected, and the problem of echo gradient mutation is solved.

The invention relates to a speed checking device for vehicles, which comprises two digital adjustable control amplifiers, A / D (analog-digital) acquisition interfaces (AD0 and AD1) of a digital signal processing control unit and a digital signal processing control unit. A control interface outputs a control signal to control the digital adjustable control amplifiers to amplify with a maximum amplification coefficient; one-time sampling and A / D conversion are carried out through the A / D acquisition interfaces (AD0 and AD1); digital filtering is carried out on an acquired signal; and finally, the digital signal processing control unit is used for processing the signal. According to the invention, the detection and the discovery of a long-range small target are ensured, sampling without distortion of a close-range big target is also ensured, a user has no need to set any parameter manually, and a system can complete the processing of an optimum signal automatically, so that the phenomenon of abnormal frequency multiplication of the speed of the vehicles is eliminated fundamently.

The invention discloses a CMOS APD photoelectric device with low dark current, and belongs to the field of semiconductor photoelectric devices. The device structure comprises a P substrate and further comprises a P trap which is subjected to ion implantation on the P substrate, an N+ layer and two P+ layers are subjected to ion implantation on the P trap, the N+ layer is a cathode, and the P+ layers are anodes. The heavily doped N+ layer and the lightly doped P well layer form a PN junction, namely an avalanche region is formed, an illumination window is arranged, when a light source is emitted into the device and absorbed by the light absorption region, photon-generated carriers are generated, and the photon-generated carriers move to the avalanche region under the action of an electric field to participate in multiplication; STI protection rings are doped at the two ends of the gap of the P well layer, small-size STI protection rings are doped at the two sides of the N + layer, and due to reasonable arrangement of STI, reduction of dark current can be guaranteed, and photocurrent can be effectively detected; and the photoelectric effect and the capacitance are optimized on the design of the device electrode. The design technology is designed from three aspects of PN junction, STI protection ring and electrode arrangement, so the dark current of the device is reduced, it is ensured that the photocurrent can be detected, and the capacitance is reduced.

The invention belongs to the technical field of heat treatment furnaces, and relates to a heat treatment furnace convenient for measuring temperature and reducing temperature measuring errors. The heat treatment furnace comprises a bottom plate (1) and a housing (2) fixed on the bottom plate (1); a liner (3) is fixed at the bottom of the inner wall of the housing (2); an opening (4) is formed in the same side of the housing (2) and the liner (3); a liftable door body device (5) is arranged below the opening (4); an electrothermal component (6) is connected to one side, far from the opening (4), of the inner wall of the liner (3); a thermocouple (10) capable of moving up and down is fixedly connected to the top of the liner (3); and a fixed plate (11) and a lifting device (12) for placing ametal workpiece are sequentially connected to the bottom of the liner (3). The heat treatment furnace solves the problem that in the prior art, the in-furnace temperature is simply detected, and cannot be effectively monitored according to the size and the shape of a product, avoids the condition that the detection device is placed manually, is convenient to use, and effectively avoids detectionerrors.

The invention aims to provide an encircling type cable damage detection device, which is used for solving the technical problem of detecting damages on the outer surface of a cable. The encircling type cable damage detection device comprises a control system, and a detection length adjustment system, a detection parallelism degree adjustment system and a cable flatness detection system which are electrically connected with the control system. The encircling type cable damage detection device has the beneficial effects that: the detection length adjustment system arranged in the encircling typecable damage detection device can realize detection of cables with different lengths; the detection parallelism degree adjustment system can realize the effect that cable clamping mechanisms at bothends are equal in clamping heights of both ends of the cable, and ensures the precision of measuring the measured cable by means of the cable flatness detection system; and the cable flatness detection system can detect the cable surface in multiple directions, and ensures the detection of damages to the cable surface.

The invention relates to shipbuilding, in particular to submarine vehicles and can be used for salvage and rescue operations on submarines (11). The inventive submarine escape vehicle (SEV) (1) comprises a body (2, 3), a suction chamber (7) provided with a thrust collar (9), a movement control system (6) and an ancillary manoeuvring and dynamic positioning system (5). The body of the suction chamber (7) comprises a movable ball-shaped belt (8) which is segmented in a particular embodiment in such a way that the segments are relatively displaceable. The thrust collar (9) is mounted above the coamings deck (10) of a damaged object (11) by the ball-shaped belt (8) turn. An external illumination system is provided with lighting elements (13) and light-markers (14) and is optically connected to an optical-television field surveillance system which is embodied in the form a set of TV cameras (12) for remotely detecting the damaged object (11). Said TV cameras (12) are mounted on the body (3) of the SEV (1) around the suction chamber (7) in such a way that multi-angle stereo-pairs are formed, the light markers (14) are fixed to the thrust collar (9), thereby making it possible to control the mutual position of the suction chamber (7) of the SEV (1) and the coamings deck (10) of the damaged object (11). A television information displaying device (15) is computer-assisted and connected to the ancillary manoeuvring and dynamic positioning system (5) by means of the movement control system (6). Said invention improves the operating characteristics of the submarine escape vehicle (1).

The invention relates to the field of wireless communication, and provides an adaptive beam width determination method and system, a base station and a medium. The method comprises the following steps: acquiring the detection probability of the ith time slot and the communication rate of the ith time slot according to the beam alignment probability of the ith time slot; and in a beam width range when the detection probability of the ith time slot is greater than or equal to a preset detection threshold value, taking the beam width when the communication rate of the ith time slot is maximum as the beam width of the ith time slot, or in the beam width range when the communication rate of the ith time slot is greater than or equal to a preset communication threshold value, taking the beam width when the communication rate of the ith time slot is maximum as the beam width of the ith time slot. And taking the beam width when the detection probability of the ith time slot is maximum as the beam width of the ith time slot. By means of the method, the problems that in the prior art, when radar is used for assisting beam alignment, the communication rate is reduced, a radar cannot detect the user equipment, even a wireless communication link cannot be established and the like in a high-speed moving scene of the user equipment can be effectively solved.

The invention relates to an automatic testing machine for a frequency response curve. The automatic testing machine comprises a machine base, and a detection mechanism, a feeding mechanism and a sorting discharging mechanism which are arranged on the machine base, wherein the detection mechanism comprises a rotating disc and a detection component; a carrier is arranged on the rotating disc; a feeding manipulator is arranged between the feeding mechanism and the rotating disc; a discharging manipulator used for sorting the detected products is arranged between the sorting discharging mechanism and the rotating disc; the detection component comprises a detector, an upper detection group and a lower detection group; the upper detection group comprises an upper detection seat and an upper detection driving mechanism; the upper detection seat is provided with a probe; the lower detection group comprises a lower detection seat and a lower detection driving mechanism; the lower detection seat is provided with an artificial ear; and the detector is electrically connected to the probe and the artificial ear, and the frequency response curve can be generated according to detected information. According to the automatic testing machine, automatic detection is adopted, the detection efficiency is greatly improved, the production cost is reduced, meanwhile, sorting disorder can be avoided, and mixed loading of products during follow-up production is prevented.

The invention discloses an aircraft fuel oil measurement system and an aircraft with the same. The aircraft fuel measurement system includes: a first fuel quantity measurement sensor and a second fuel quantity measurement sensor, the first fuel quantity measurement sensor and the second fuel quantity measurement sensor are arranged in the left wing fuel tank; There are a first fuel quantity measuring sensor and a second fuel quantity measuring sensor; a fuel measuring computer, a first processing unit and a second processing unit are arranged in the fuel measuring computer, and the first processing unit is connected with the first fuel measuring sensor; the second The processing unit is connected to the second oil quantity measuring sensor. In the aircraft fuel measurement system of the present invention, the first processing unit and the second processing unit transmit information to each other to obtain the information obtained by the other party. When any one of the first fuel quantity measurement sensor or the second fuel quantity measurement sensor is broken , capable of oil quantity measurement by another oil quantity measurement sensor.

The invention relates to high-precision no-woven cloth production detection and post treatment equipment which comprises a detection part and a glue filling part; the detection part comprises a conveying mechanism, and a detection mechanism arranged above the conveying mechanism and used for detecting whether a glue lacking area exists in simplex cloth passing through the conveying mechanism; and the glue filling part comprises a supporting mechanism, and a glue filling mechanism arranged above the supporting mechanism and used for carrying out glue filling on the glue lacking area detected out by the detection mechanism under the control of the detection mechanism. The problems that the glue lacking part exist in the simplex cloth in a no-woven cloth production process and the prior art can not detect the glue lacking part or carry out glue filling are solved.

The invention discloses a synchronous rectification control method for successive adjustment of a gate, a controller and a switching power supply. The method comprises the following steps: outputtinga modulation signal to gradually reduce the gate voltage of a rectifier transistor; comparing the drain voltage of the rectifier transistor with a first threshold voltage and outputting a modulation signal; comparing the drain voltage of the rectifier transistor with a second threshold voltage and outputting a gate turn-off signal; calculating a time t<reg> from the output of the modulation signalto the turn-off of the rectifier transistor; comparing the time t<reg> with a reference time t<ref>; if the time t<reg> is longer than the reference time t<ref>, outputting a next modulation signal to shorten a next time t<reg>; and if the time t<reg> is shorter than the reference time t<ref>, outputting a next modulation signal to prolong a next time t<reg>. The controller may perform the method. The switching power supply comprises the controller. According to the invention, the energy loss can be minimized, and the zero crossing point can be accurately detected.

The invention relates to a product waterproof performance detection device. The device comprises a detection box, the detection box is internally provided with an object placing cavity used for placing a to-be-detected product and a working cavity arranged below the object placing cavity. A rotary disc which is used for containing the to-be-detected product and can horizontally rotate is arrangedin the object placing cavity, a water inlet used for allowing water flow to be sprayed to the product is formed in one side of the object placing cavity, a water spraying mechanism communicated with the water inlet is arranged on one side of the detection box, and a water conveying mechanism used for conveying water into the water spraying mechanism is arranged in the working cavity. The device has the characteristics that products can be detected in batches, and the products are detected in place.

The invention relates to a continuous processing production line of weft-free cloth. The continuous processing production line comprises a film tear part, wherein the film tear part is used for separating cloth from an isolating film of cloth with the film, and a glue filling part for filling a glue-absent region on the separated cloth with glue, wherein the glue filling part comprises a detection mechanism for detecting the glue-absent region on the cloth and a glue filling mechanism which is arranged at the rear end of the detection mechanism and is used for filling the glue-absent region detected by the detection mechanism with the glue under the control of the detection mechanism. The continuous processing production line solves the problems of unsmooth film tearing and low film tearing efficiency and the problem that the quality of subsequently produced weft-free cloth is affected due to absence of the glue on the cloth after the film is torn off.

The invention relates to a melt-spinning plant for the production of synthetic yarns, having a plurality of spinning positions. Each spinning position has a spinning nozzle arrangement, a cooling arrangement, a godet arrangement and a winding arrangement. An automatic operating mechanism is provided for inserting the yarn into the spinning positions, said operating mechanism being movable to each spinning position in order to insert the yarn. The automatic operating mechanism is guided via a guide above the operator corridor and has at least one collision sensor for detecting obstacles. In order to be able to carry out all operating processes with high safety in one spinning position, the robot has a sensor column for accommodating the crash sensor and protrudes into the operator corridor at a distance from the plant floor .

The invention discloses a positioning method and a device of a multimode GNSS system, a storage medium and a receiver. The positioning method comprises the following steps: measuring a pseudo-range observation quantity based on the received satellite signal, and calculating a receiver clock difference of each positioning system in the multimode GNSS system; using the receiver clock difference of each positioning system to calculate the inter-system time delay between each positioning system during the measurement when the receiver clock difference of each positioning system is reliable; usingthe inter-system time delay as an observation quantity and combining the pseudo-range observation quantity to detect and exclude the abnormal satellite when the inter-system time delay is stable; andusing the pseudo-range observation quantity of the remaining satellites after excluding the abnormal satellite to obtain the position information of the receiver . According to the positioning methodof the multimode GNSS system, the positioning accuracy of the receiver can be improved in a severe environment.

The invention relates to a sensor device for detecting ambient conditions, in particular for a motor vehicle, which sensor device has at least one carrier board, in particular a printed circuit board, and optical elements arranged on the carrier board, wherein a plurality of optical elements surround a A common central area is arranged on the carrier plate, and at least two of the optical elements arranged around the central area have a main axis of action. These main action axes are positioned at a predetermined angle relative to the carrier plate, wherein the main action axes point towards the common central area. Further sensors arranged on the carrier plate are, for example, rain sensors, sunlight sensors and different light sensors which are preferably arranged on the receiving surface of the carrier plate.