58results about How to "Reduce the number of plugging and unplugging" patented technology

The invention discloses a method and device for detecting an insulation fault of a power battery system, and the method comprises the steps: detecting an insulation value between the power battery system and a vehicle frame after an insulation fault of a whole vehicle high-voltage loop is detected and positive and negative high-voltage relays are turned off, and comparing the insulation value with a preset value; determining that an insulation fault happens to a power battery in the whole vehicle high-voltage loop if the insulation value is less than the preset value, and enabling a message that the insulation fault happens to the power battery to be transmitted to a whole vehicle controller; judging that the insulation fault happens to a high-voltage load, except the power battery, in the whole vehicle high-voltage loop if the insulation value is not less than the preset value, and transmitting a message that the insulation fault happens to the high-voltage load, except the power battery, in the whole vehicle high-voltage loop to the whole vehicle controller. The method can determine that the insulation fault happens to the power battery or other high-voltage loads, thereby greatly reducing the inspection difficulty of the insulation fault of the vehicle. The method does not need to carry out the disassembly of a connector assembly in the insulation inspection process of the whole vehicle, and improves the connection reliability of devices.

The invention belongs to the technical field of aviation electronics and particularly relates to a wireless cache recorder. The wireless cache recorder comprises a power module, a data management module, a wireless communication module and an antenna, wherein the power module is connected with the data management module and the wireless communication module; and the data management module is connected with the wireless communication module which is connected with the antenna. The wireless cache recorder has the advantages that a direct, reliable and fast point-to-point data exchange channel can be established between an airplane and a data analysis center of an airline company without huge additional investment and any human intervention after a commercial wireless network all over the world is used to download flight data, so that the data distribution time and relay links are effectively reduced and the need of ground maintainers and the expense of supporting equipment are reduced; and therefore, the wireless cache recorder has obvious advantages in the aspects of reducing the operation cost of the airplane, improving the maintenance efficiency of the airplane, reducing the maintenance workload and the like.

The invention discloses a current lead structure for a superconducting magnet, relates to a current lead structure, and provides a current lead structure for a superconducting magnet, wherein electric power can through the current lead structure, and a coolant can also pass through the current lead structure. The current lead structure for the superconducting magnet comprises a moving part and a fixed part which are axially butted, wherein the fixed part comprises a first fixed electrode and a second fixed electrode which are mutually insulated and arranged in an embedding way, a space inside the second fixed electrode is a coolant receiving channel; the moving part comprises a first moving electrode and a second moving electrode which are mutually insulated and embedded and arranged, a space inside the second moving electrode is a coolant guiding channel; and the end part of the first moving electrode and the end part of the first fixed electrode are conducted through contact, the end part of the second moving electrode and the end part of the second fixed electrode are conducted through contact and sealed, and the coolant guiding channel is communicated with a coolant receiving channel. Magnetizing and bleeding a superconducting coil by connecting a power supply and adding or reducing a coolant in a low temperature closed container holding the superconducting coil can be realized through the current lead structure.

The invention relates to an improved transfusion alarm and a use method thereof. The transfusion alarm comprises a liquid level detection device and an alarming device, wherein the liquid level detection device comprises a puncture needle body, a prism, a first optical fiber, a second optical fiber and an optical fiber connecting head; and the alarming device comprises an optical fiber connecting seat, a light emitting diode, a photosensitive diode, a signal amplification circuit, a reference voltage circuit, a comparison circuit, a singlechip microcomputer, a sound-light alarm circuit, an electronic switch, a peripheral circuit and the like. The improved transfusion alarm is simple in structure, safe and reliable, low in manufacturing cost and convenient to use, and is suitable for mass production and large-scale use, and the working amount of nurses is not increased; a photoelectrical principle is used to detect the liquid level; the optical fibers are utilized to transmit signals to the alarming device; the transfusion alarm is high in alarming accuracy, and is not influenced by the factors such as medicine liquid containers and the liquid level detection device; and electrolytic reaction cannot be generated on the medicine liquid. With the adoption of the transfusion alarm, the liquid level detection device is separated from the alarming device; and the liquid level detection device is extremely low in cost and is disposable, so that safety is ensured; and the alarming device can be used repeatedly, and has the characteristics of energy conservation, environment friendliness and the like.

The invention provides an electronic device provided with two USB interfaces. The electronic device mainly comprises a first USB interface module, a second USB interface module, a memory module, a control storage module electrically connected with the memory module, and a switch module which is electrically connected with the control storage module, the first USB interface module, and the second USB interface module respectively. When the switch module is turned on, data storage of the memory module is performed by the control storage module of the electronic device via the first USB interface module; and when the switch module is turned off, data storage of the memory module is performed by the control storage module of the electronic device via the second USB interface module The electronic device provided with two USB interfaces can be connected with a computer via the other USB interface when data storage is performed, and data can be modified at the same time, so that time is saved, plugging and unplugging times are reduced, and damages on the USB interfaces are avoided effectively.

The embodiment of the invention provides a mobile terminal and an earphone. The mobile terminal includes an upper cover, a lower cover, a first preset number of contact springs and an earphone circuit. A first preset number of hole grooves are arranged symmetrically on the same side of the upper cover and the lower cover. When the upper cover and the lower cover are closed, a first preset number of loudspeaker holes are formed. Each hole groove of the lower cover is provided with one contact spring. Each contact spring is used for being clamped with an insert post contact of each insert post in the earphone when an earphone plug is plugged into the mobile terminal. Each contact spring is connected with the earphone circuit. According to the invention, the loudspeaker holes can also be used as earphone interfaces.

The invention relates to the technical field of mainboard testing, in particular to a mainboard testing device. The mainboard testing device comprises a jig, an interface module and a first pushing structure, the jig comprises a base, and a mainboard to be tested is suitable for being detachably connected to the top of the base; the interface module is movably arranged at the top of the base and located on the side portion of the mainboard to be tested, the interface module is provided with at least three sets of interfaces, the at least three sets of interfaces are matched with interfaces in the mainboard to be tested respectively, and the plugging directions of the at least three sets of interfaces are consistent; the first pushing structure comprises a first pushing seat and a first pushing part, the first pushing seat is fixedly connected to the top of the base, one end of the first pushing part is movably connected with the first pushing seat, and the other end of the first pushing part is connected with the interface module. According to the mainboard testing device provided by the invention, time and labor are saved during testing, and the to-be-tested mainboard is not easy to damage.

The invention belongs to the field of microwave measurement, and relates to a multi-frequency point phase distribution method for radar antenna array elements. The multi-frequency point phase distribution method comprises the following steps: S1, connecting a test probe into an appointed antenna array element; S2, sending control information corresponding to a frequency point of the appointed antenna array element to an array plane control source by a control computer; S3, measuring data corresponding to the frequency point by using a vector network analyzer, and transmitting the data to the control computer through a GPIB (general purpose interface bus) cable; S4, storing the data in a corresponding database after the data under the frequency point is received by the control computer and corresponding data processing is performed; S5, judging whether the phase distribution of all the frequency points of one array element is finished or not; S6, judging whether the phase distribution of all the frequency points of all the array elements is finished or not. The plug time of each frequency point is greatly reduced, so the plug time of a whole phase distribution cycle is further shortened, manpower, material resources and financial resources in the phase distribution process are saved, and the development cycle and the production cycle are greatly shortened.

A mouse comprises a body and an inductor and a controller which are arranged in the body. The mouse is characterized in that the controller is provided with a mouse function control module, a data storage module and a network communication control module. The invention integrates wireless fidelity, data storage and the mouse creatively, dispenses with connection with the independent communication media again, can surf the internet without increasing the peripheral components of the computer and reduces the plug-pull frequency of the peripheral connecting interfaces of the computer, thus greatly reducing the probability of computer failure and damage.

The invention relates to a track inspection system host which comprises a host case, an inspection server and a control device, wherein the inspection server and the control device are arranged inside the host case. A signal input interface and more than one misplug prevention signal output interface are formed in the host case, the control device comprises a power device, a signal distribution module and a programmable controller, the signal input interface is connected with the signal distribution module, the misplug prevention signal output interfaces are connected with the inspection server, the power device and the signal distribution module, and the inspection server, the programmable controller and the signal distribution module are sequentially connected. The inspection server and the control device are fixedly mounted in the host case, cable connection is performed in the host case, the host case with the misplug prevention signal output interfaces is high in integration level, connection errors can be prevented, the track inspection system host is convenient to mount and use, and the service life of the host can be prolonged.

The invention relates to a relay protection device and a safety isolation control method and a control device thereof. The relay protection device comprises a safety isolation control device, wherein the safety isolation control device and the control method are respectively applicable to an intelligent transformer station; an optical port receiving and sending safety isolation module is arranged in the control device; during the safety isolation, a control instruction of stopping the operation is sent to a corresponding optical port module; the corresponding optical port module is controlled to stop operation; the safe isolation of the rely protection device is realized. The control device has the advantages that during the safety isolation, the number of times of plugging and unplugging optical fiber when an optical port of the relay protection device is isolated can be reduced; the misoperation risk on the relay protection device is reduced; the service life of the optical port of the device and the service life of optical fiber are prolonged; the reliable transmission of information is guaranteed.

The present invention discloses an ultrasonic probe extension and connection dock. The ultrasonic probe extension and connection dock comprises an extension dock panel, and the extension dock panel is fixed on a portable-type or trolley-type ultrasonic host; the extension dock panel is provided with a switch, signal output ends, a plurality of probe interfaces, probe signal input channels and channel buttons, the switch controls opening or closing of the extension dock panel, the channel buttons are in an one-to-one correspondence with the probe signal input channels to realize switching of each probe signal input channel, the plurality of the probe interfaces can be respectively connected with ultrasonic probes, each probe interface is in an one-to-one correspondence with the probe signal input channel, and the signal output ends are connected with signal input ends of the portable-type or trolley-type ultrasonic host. The ultrasonic probe extension and connection dock greatly reduces inserting and extracting times of the ultrasonic probes, reduces loss of the probe interfaces of the ultrasonic host and has strong practicability.

The invention discloses a nuclear power plant driving mechanism insulation and direct-current resistance tester. The tester comprises an insulation resistance tester, a direct-current resistance tester and a switching control device; the insulation resistance tester is connected with a nuclear power plant driving mechanism and detects the insulation resistance of the nuclear power plant driving mechanism; the direct-current resistance tester is connected with the nuclear power plant driving mechanism and tests the direct-current resistance of the test nuclear power plant driving mechanism; andthe switching control module is connected with the insulation resistance tester and the direct-current resistance tester, and controls the insulation resistance tester and the direct-current resistance tester to work alternately. With the nuclear power plant driving mechanism insulation and direct-current resistance tester of the invention adopted, the insulation coefficients and direct-current resistance parameters of hundreds of driving mechanisms in a nuclear power plant reactor can be quickly and efficiently measured, manpower and time costs can be significantly reduced, and the safety ofstaff can be improved.

The invention belongs to the technical field of electric connectors and specifically provides a novel energy-saving plug including pin, a plug body, a connector, a plug wire and a button. According to the invention, whether an electricity consuming device is in a working state or not is judged through current detection. When the electricity consuming device is not in the working state, automatic power cut of the plug is implemented. The plug can be connected to another plug through the connector, so as to implement a function of an extension plug. Since separate connection/disconnection control is set for the pins and a circuit board, accidents in a plugging moment are avoided. The bottom of the plug body is also provided with a groove, so that plugging and unplugging are facilitated. The plug can save electricity consumption of the electricity consuming device in the non-working state, reduces plug plugging and unplugging times, avoids risks of electric shock caused by finger slipping when plugging or unplugging the plug. At the same time, automatic starting after power restoration since a power switch is not switched off timely in power failure is avoided, so that safety is ensured.