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.

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 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 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 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 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.