38results about How to "Achieve circuit break" patented technology

The invention relates to a fault injection device. The fault injection device comprises an operation panel used for setting a type of a fault signal needing injection, a signal collection module used for filtering and shaping a signal from a vehicle sensor to generate an original signal and inputting the original signal to an MCU, an MCU for processing the signal outputted from the signal collection module to generate a fault injection signal meeting the type of the fault signal needing injection as an output signal according to the type of the fault signal needing injection received by the operation panel in a situation that there is a fault injection mode or employing the original signal from the signal collection module as an output signal directly in a situation that there is not a fault injection mode, and a signal output module for receiving the output signal from the MCU and outputting a square wave signal or a simulation signal to an electric control module to be detected. By utilization of the fault injection device, fault injection with various types can be achieved.

The invention provides a circuit repairing method used for a printed circuit board, comprising the following steps: firstly detecting a circuit on the printed circuit board, marking a position of a defect on the circuit, comparing the defect with a circuit design drawing, and obtaining coordinate values of the defect; then detecting a shape of the defect, designing and carving a to-be-repaired region according to the shape of the defect, and carving and removing a copper foil in a copper-rich region by using a carving machine; and finally referring to the circuit design drawing, determining aglue extrusion path and a glue extrusion technology according to the position and shape of the to-be-repaired region, extruding slurry into the to-be-repaired region according to the glue extrusion path and the glue extrusion technology, and solidifying the slurry. The provided circuit repairing method used for the printed circuit board has the advantages that the position and shape of the defectare detected, the copper-rich region and a copper-deficient region are carved, a short circuit defect is eliminated, then the to-be-repaired region is filled by using the slurry, repairing on the defects such as circuit breakage and a pit is realized, and production yield of the printed circuit board is improved.

The invention discloses a laser PN isolation process for a back surface field of a solar cell. The process comprises steps as follows: front cleaning and texturing, diffusion, PN isolation, post cleaning, silicon nitride deposition with a plasma enhanced chemical vapor deposition method, screen printing and sintering, and testing and sorting, wherein the PN isolation adopts laser etching and specifically comprises steps as follows: edge slotting is performed on the back surface of the solar cell with a fiber laser at a line scribing speed of 100-120 mm/s by surrounding the surface of the back surface of a silicon wafer, the distance between a slotting edge and the silicon wafer edge is 0.5mm, and the slotting depth is 10-15 mu m, so that PN isolation is realized. According to the process, a traditional wet etching process is replaced with laser isolation, and a traditional laser etching process is improved, so that the process requirement of removing an edge PN junction during the production process of solar cells can be met.

The invention discloses a self-dredging closestool comprising a stool body, a lid arranged over the stool body and a water tank arranged on the back side of the stool body. a urinal and a drain pipe communicating the urinal and a drain port are disposed in the stool body; a dredging mechanism is further disposed in the stool body; the dredging mechanism has a vibrating motor arranged on a bend part of the drain pipe, an eccentric wheel fixedly connected with an output shaft of the vibrating motor and at least one connection rod, two ends of which are fixedly connected with the eccentric wheel and the outer wall of the drain pipe; and the drain pipe is a corrugated pipe. With collaboration and cooperation between the dredging mechanism, a cleaning mechanism and a disinfecting mechanism and a controller, the closestool can be unblocked, cleaned and disinfected in time; and the self-dredging closestool has great application value and promotion value.

The invention discloses a battery heat protecting mechanism of communication equipment. The battery heat protecting mechanism comprises a shell, an upper cover and a battery core body, wherein the battery core body is inserted into the shell, and two electrode holders are formed on the battery core body; the upper end of the shell is fixedly connected with a hood; two sockets are formed in the hood; two heat-dissipating holes are formed in the two ends of the hood; sealing covers are inserted into the heat-dissipating holes; connecting rods stretching into the hood are formed at the lower ends of the sealing covers; the lower end of each connecting rod is fixedly connected with a fusible block; the middle parts of the fusible blocks are hollowed out to form hollow parts; the inner walls of the upper ends of the hollow parts are fixedly connected with first pressure springs; conductive posts are inserted into the sockets; the upper ends of the conductive posts are exposed out of the sockets and are fixedly connected with a first cross rod; the two ends of the cross rod are fixed to the two conductive posts respectively; the lower end of the middle part of the cross rod is fixedly connected with a second pressure spring; and second cross rods are fixedly connected between the upper ends of the conductive posts and the sealing covers. During overheating of a battery, the battery heat protecting mechanism can automatically disconnect a connecting circuit, and at the same time open a heat-dissipating passage to cool the battery core body so as to prevent explosion of the battery.

The invention discloses a remote photovoltaic module monitoring device. The device is electrically connected with a single photovoltaic module, and comprises a shell and a function module in the shell, wherein the function module comprises a sampling module, an adjustment module, a central processing module, a relay module, a wireless communication module and a defect detection module; the sampling module is used for collecting sampling data of the photovoltaic module; the adjustment module is used for adjusting output voltage and output current of the photovoltaic module; the central processing module is used for controlling the adjustment module to adjust the output voltage and the output current of the photovoltaic module after the sampling data is collected; the relay module is used for controlling short circuit and open circuit of the photovoltaic module; the wireless communication module is used for sending the sampling data and the processed data to a cloud server; and the defect detection module is used for carrying out defect detection on a battery piece in a sampled photovoltaic module image. The remote photovoltaic module monitoring device is capable of monitoring the working states of photovoltaic modules in real time and timely and correctly detecting the defects of abnormal battery pieces, so as to timely discover conditions and give alarms.

The invention belongs to the field of optical devices, discloses problems that an existing solar cell street lamp is short in service life and low in conversion efficiency and needs electric energy storage and discloses an automatic on-off device based on a radiation refrigeration technology and a street lamp. The working wavelength is infrared light, at night, under the condition that conductionand convection of the face, facing the sky, of the thermoelectric generator are isolated, the temperature of the face, facing the sky, of the thermoelectric generator is reduced through a radiation refrigerator to be lower than the environment temperature, and the other face of the thermoelectric generator generates temperature difference at two ends due to environment heating to be closed at night. In the daytime, the temperature difference generated by radiation refrigeration is counteracted by heating of solar radiation, and the thermoelectric generator does not work, so the circuit is disconnected in the daytime. The automatic on-off device is advantaged in that the automatic on-off device can be realized.

The invention discloses a weak fault diagnosis method for an aircraft cable. The method comprises steps that detection equipment built based on a virtual instrument technology collects reflected signals of the aircraft cable; the collected reflection signals are processed through improved variational mode decomposition; short-time Fourier transform is conducted on the decomposed intrinsic mode component containing the fault information; time-frequency energy of the intrinsic mode component subjected to the short-time Fourier transform is redistributed by using a rearrangement spectrogram method, and the time-frequency energy is distributed to a gravity center position; and then time energy information is extracted to draw a fault information curve of the aircraft cable, and whether the aircraft cable has a weak fault is diagnosed from an energy angle. The method is advantaged in that a problem that a traditional spread spectrum time domain reflection method cannot effectively detect weak faults is solved, diagnosis of the weak faults of the aircraft cable is achieved, the early warning capacity and the detection rate of the weak faults of the aircraft cable are improved, and support is provided for maintenance of the aircraft cable.

The invention discloses a built-in battery insulated container. The container comprises an insulated object placing body, an insulated cover, an inner container and a heating device. The insulated cover and the insulated object placing body are connected in a threaded manner to form an accommodation cavity. The inner container is accommodated into the accommodation cavity and connected with the inner wall of the insulated object placing body in a threaded manner and used for installing the heating device for heating the inner container to the bottom of the insulated object placing body. The opening edge of the inner container is provided with insulated glue in a surrounding manner. An insulated groove corresponding to the insulated glue is arranged on the insulated cover and provided with an oblique guiding surface. The insulated glue is extruded by the insulated cover and slides along the oblique guiding surface of the insulated groove and bents towards the central line direction of the inner container so that elastic deformation is achieved. The insulated glue abuts against and is accommodated into the insulated groove. The built-in battery insulated container is provided with the insulated object placing body, the insulated cover, the inner container and the heating device so that insulation effect of food is improved.

A protective element includes at least three electrodes provided on one PTC material. The PTC material operates as at least two PTC elements. This protective element can be manufactured, with fewer components, in an easy manner, and at lower cost, and can cope with overcurrent and overvoltage.

The invention provides a charging gun for a new energy vehicle, and relates to the field of new energy vehicles. The charging gun for the new energy vehicle comprises a handle and a charging head, a adjustment and control cavity is formed between the handle and the charging head, the charging head is fixedly connected with the left side face of the adjustment and control cavity, a circuit pipe communicating with the interior of the adjustment and control cavity is fixedly installed on the right side face of the adjustment and control cavity, two ball sleeves are arranged on the right side of the circuit pipe, and a swing pipe is installed between the two ball sleeves; the ball sleeve on the left side is fixedly connected with the right end of the circuit tube, the ball sleeve on the right side is fixedly connected with the handle, and a storage sleeve is arranged between the handle and the adjustment and control cavity. According to the charging gun for the new energy vehicle, through the arrangement of the arc-shaped plate A, when the charging gun is inserted into a charging port of the new energy vehicle, the effect that circuit breaking and then connection can be achieved when the new energy vehicle is charged is achieved; the charging gun solves the problem that a charging gun in the prior art has certain dangerousness when being electrified and not inserted into an vehicle charging port.

The invention relates to the technical field of electrical tests of 10kV voltage class distribution transformers, and discloses a short circuit device of a distribution transformer. The short-circuit equipment of the distribution transformer comprises a short-circuit mechanism, and the short-circuit mechanism comprises a short-circuit copper bar, a first lifting assembly and three wiring copper bars, wherein the three wiring copper bars can be respectively connected with an A-phase wiring terminal, a B-phase wiring terminal and a C-phase wiring terminal of the distribution transformer; the short-circuit copper bar can be connected to a 0-phase binding post of the distribution transformer, and the wiring copper bar is located above the short-circuit copper bar; the short-circuit copper bar is installed on the first lifting assembly, and the first lifting assembly drives the short-circuit copper bar to ascend and descend so as to control connection and disconnection of the short-circuit copper bar and the wiring copper bar. According to the invention, automatic open circuit and short circuit of the distribution transformer are realized, manual repeated wire connection and disconnection are not needed, a large amount of wire connection and disconnection time of testers is saved, the test efficiency is improved, and all electrical tests of the distribution transformer are automatically completed through one-time wire connection.

The invention belongs to the technical field of low-voltage electrical equipment, and particularly relates to a molded case circuit breaker. Comprising a metering unit, a processing unit, a voltage acquisition unit, a tripping unit and a current acquisition unit, and the voltage acquisition unit is used for acquiring voltage on a phase line and generating a voltage signal; the current acquisition unit is used for acquiring current on a phase line and generating a current signal; the metering unit can calculate the electric power data according to the current signal and the voltage signal, and when the calculated voltage value exceeds a set range, a second tripping signal is generated; the processing unit can compare the current signal with a set protection threshold value, and generates a first tripping signal when the current signal exceeds the protection threshold value; the tripping unit can control the opening and closing state of the tripper structural member according to the first tripping signal and the second tripping signal. According to the invention, the control precision is improved, and data acquisition, electric energy measurement, power measurement, harmonic measurement and temperature and humidity measurement are realized through the metering module.

The invention discloses an acquisition board circuit of an intelligent photovoltaic power station simulator. Includes control circuit, MOS transistor drive circuit, acquisition control circuit, measurement circuit, power supply circuit, peripheral circuit and communication isolation circuit. The invention can be used for collecting energy of a single solar cell panel. The invention can realize theopen circuit, short circuit and path control of a single solar cell panel, and can be used for the research of solar energy fault diagnosis. The invention can be used for collecting voltage and current data of a single solar cell panel. The invention can transmit the collected data to the upper computer.

The invention discloses a torsional damping pre-adjustment method of an energy-saving water leakage circuit breaker. A water inlet assembly, a water outlet assembly, a torsional suite, a transmissionsuite and a stopping suite are included. The torsional damping pre-adjustment method comprises the following steps of S1, fixing two ends of a torsional spring in a normal state; S2, adjusting torsionof the torsional spring; and S3, adjusting the torsion for twisting the water outlet assembly to rotate when a circuit is broken.

The invention relates to a self-inspection circuit applied to an aviation electric heating control system, and belongs to the technical field of aviation electric heating control systems. Through acquisition of a loop on-off output instruction, an input voltage, an output voltage and an output current, self-inspection is carried out on the aviation electric heating control system, so that judgmentand positioning of the processor on-off output function, the power output function, and the output loop normal, open circuit and short circuit states are realized.

The invention relates to the technical field of sockets, in particular to a convertible multi-standard socket which comprises a base, a socket panel and a rotating panel. A selection hole is formed in one side of the surface of the rotating panel, a plurality of socket modules are arranged on the surface of the socket panel, the jack shapes and specifications of the plurality of socket modules are different, and the position of the selection hole corresponds to the position of any one of the plurality of socket modules. The socket has the advantages that a user can rotate the rotating panel according to needs, so that the selection hole is aligned at the socket specification required by the user; and meanwhile, the rotating panel drives a guide block to move to the top of a voltage adapter corresponding to the selected socket module, the two guide plates at the top of the voltage adapter are opened, and a contact head is butted with a contact terminal, so that an assess is realized; the contact heads at the tops of the voltage adapters corresponding to other socket modules are pushed by the reset springs to be far away from the contact terminals, so that circuit breaking is realized, and the service life of the socket is prolonged.

The invention relates to the technical field of valves, in particular to a safety valve. The safety valve comprises an elastic sealing chamber structure, a lever on-off structure, an over-current line breaking device, a ball piston on-off structure and a breakable connecting structure, the elastic sealing chamber structure comprises a base body seat, an elastic sealing gasket, a sealing chamber spring and a mounting bowl body, the base body seat is provided with a plane base body part, and the plane base body part and the elastic sealing gasket are jointly limited to form an elastic sealing chamber. The lever on-off structure comprises an air tap piece, a transmission lever and an on-off sliding plug, the on-off sliding plug is arranged on a sliding pipe part in a sliding mode, one end of the on-off sliding plug is connected with one end of the transmission lever, and an up-down floating piece providing power for rotation of the transmission lever is further included. The over-current line breaking device comprises a floating ball, a ball chamber, an elastic recovery piece and a buffer storage chamber. According to the safety valve, when downstream gas leakage occurs, automatic line breaking can be achieved, excessive gas leakage is avoided, and the safety protection function is achieved.