22 results about "Dry contact" patented technology

This utility model relates to an external trigger control device for a laser tracker, comprising: a power switch; a power conversion module; a first relay, the coil of which is connected in the output circuit of the power conversion module; and a second relay, wherein the external trigger signal is connected in series with the coil of the second relay. One end of the series connection is connected to one end of a first wire through a normally closed switch of the first relay and to the positive terminal of a DC power supply through a normally open switch of the first relay. The other end of the series connection is connected to the other end of the first wire through a normally closed switch of the first relay and to the negative terminal of the DC power supply through a normally open switch of the first relay. The switching signal of the normally open switch of the second relay is input to the external trigger port of the tracker controller. When the external trigger signal is a dry contact signal, the power switch is turned on; when the external trigger signal is a DC signal, the power switch is turned off. This utility model meets the needs of different types of external trigger signals, ensuring versatility and flexibility of use.

A dynamic wave-based dry-contact acquisition apparatus, a state determination method, and an electronic device. The apparatus comprises at least one acquisition circuit and a core computation module. The core computation module is used for determining a state of a dry contact, and comprises three FPGA units, that is, a first FPGA unit, a second FPGA unit, and a third FPGA unit. Each acquisition circuit comprises upper and lower transmitting optocouplers and upper and lower return-acquisition optocouplers. The third FPGA unit transmits a dynamic wave to the transmitting optocouplers of each acquisition circuit, and each acquisition circuit acquires, by means of the return-acquisition optocouplers, signals obtained after the dynamic wave passes through the dry contact, and transmits the signals to the first FPGA unit and the second FPGA unit which are redundantly configured. The first FPGA unit and the second FPGA unit perform cross‑comparison on the received signals, and determine the state of the dry contact in light of the dynamic wave transmitted by the third FPGA unit. The apparatus has advantages such as structural simplicity, low cost, simultaneous acquisition at a plurality of nodes, and accurate determination of dry-contact states.

The utility model discloses a dry contact input detection circuit and device, and relates to the technical field of signal detection, the detection circuit comprises a photoelectric coupler, a first triode and a constant current module, the light emitting side input end of the photoelectric coupler and the collector electrode of the first triode are connected with a power supply; the light-emitting side output end of the photoelectric coupler and the emitting electrode of the first triode are connected with the constant current module; the anode of the first diode is connected with the power supply, the cathode of the first diode is connected with the first detection end and one end of the first resistor, the other end of the first resistor is connected with the base of the first triode and one end of the second resistor, and the other end of the second resistor is connected with the second detection end and the constant current module; and the light receiving side of the photoelectric coupler is connected with the signal analyzing and processing module, and the signal analyzing and processing module judges whether the circuit of the dry contact is normal or not according to the working state of the photoelectric coupler. According to the invention, both a passive dry contact and an active dry contact can be detected.

The utility model relates to a signal acquisition circuit and device, and the circuit comprises a signal interface which is used for the access of a signal to be acquired, and the signal to be acquired comprises a high-voltage control signal, a low-voltage control signal, and a dry contact signal; the acquisition unit is used for outputting a state indication signal capable of representing the state of the to-be-acquired signal when the to-be-acquired signal is received; the high-impedance acquisition channel is connected between the signal interface and the acquisition unit and is conducted when the signal to be acquired is a high-voltage control signal; the low-impedance acquisition channel is connected between the signal interface and the acquisition unit and is conducted when the signal to be acquired is a low-voltage control signal; and the dry contact acquisition channel is connected between the signal interface and the acquisition unit and is used for conducting when the to-be-acquired signal is a dry contact signal. According to the utility model, various types of equipment control signals can be acquired, the circuit structure is simple, the size and the weight are small, the portability is strong, and the acquisition efficiency of the control signals can be improved.

A braking interface, braking system, and braking method suitable for a heavy-haul freight train. A front contact of a relay is connected in parallel to a dry contact of a locomotive braking system. When a failure occurs in a main control computer or the main control computer loses external power, the relay is de-energized, causing the front contact to open and the dry contact to open accordingly, thereby preventing an unintended emergency braking command from being outputted to a train, so that the potential safety hazard of output of an unintended emergency braking command to a normally running heavy-haul freight train caused by a failure or loss of external power in a main control computer is solved. In addition, by additionally providing an acousto-optic alarm apparatus and performing an automatic minimum equipment list check on the main control computer before commissioning, it is ensured that an automatic protection function of the train still complies with the fail-safe principle specified in "TB / T 2615-2018: Fail-safe principle of railway signaling".

The embodiment of the invention discloses high-voltage direct-hanging energy storage equipment and an energy management processing method thereof.The energy management processing method of the high-voltage direct-hanging energy storage equipment comprises the steps that working data of a plurality of subsystems and on-off signal data of a plurality of dry contacts are obtained, and the working data of the subsystems are from the subsystems; the plurality of dry contact on-off signal data are from the plurality of dry contacts; performing time mark alignment processing on the plurality of subsystem working data and the plurality of dry contact on-off signal data so as to unify the timestamps of the plurality of subsystem working data and the timestamps of the plurality of dry contact on-off signal data to the same time reference; and outputting the plurality of subsystem working data and the plurality of dry contact on-off signal data which are subjected to the time mark alignment processing to external equipment. According to the energy management processing method of the high-voltage direct-hanging energy storage equipment, the technical problem that the high-voltage direct-hanging energy storage equipment is inconvenient to manage due to data islanding of each subsystem in the prior art is solved.

The utility model discloses a fan contact thimble device which comprises a fan module, a device cover plate and a fan mother seat plate, a connecting cavity is arranged on one side of the fan module, a contact terminal is arranged in the connecting cavity, a plurality of contact thimbles are distributed at the lower end of the contact terminal, the connecting cavity is sealed by the device cover plate, and a wire extends out of the fan module. The electric wire is connected with the contact ejector pin after being inserted into the contact terminal, a plurality of contact metal sheets are distributed on the fan mother seat plate, and the contact ejector pin penetrates through the device cover plate and then is inserted into the contact metal sheets. The fan contact ejector pin device is applied to the hot-plug automatic assembly process of a fan for a server, the disassembly and assembly steps of internal functional components of the server are optimized, the internal space is fully utilized, the redundant steps of manual installation are saved, the plugging form of an external terminal is replaced with a contact form, the size is small, and the use is convenient. And the assembly efficiency and the maintenance performance are improved.

The utility model discloses an acousto-optic anti-misoperation control loop of a relay protection screen cabinet, which relates to the technical field of relay protection devices, and is characterized in that a secondary coil of a voltage transformer is connected with the relay protection screen cabinet and is connected with a voltage relay in series, when electrical equipment runs, the secondary loop of the voltage transformer is electrified, and the relay protection screen cabinet is electrified. When the field personnel open the cabinet door of the relay protection screen cabinet, the limit switch of the cabinet door of the relay protection screen cabinet is closed, the input dry contact loop of the acousto-optic voice alarm is connected, the function of the acousto-optic voice alarm is triggered, and a voice prompt is given to the personnel needing to carry out maintenance operation. And personnel are prevented from carrying out operation in abnormal states such as inconcentrated energy and fatigue operation, so that operation risks such as mistaken touch and mistaken wiring are avoided, safe operation of equipment is ensured, and personnel injury accidents are avoided.

The invention relates to a drive control circuit and method for a steam turbine speed regulator. The drive control circuit comprises a direct-current power supply input unit and at least one drive branch. The direct-current power input unit comprises a live wire and a zero wire; the number of the driving branches is equal to that of the OPC electromagnetic valves, each driving branch comprises an intermediate relay K1 and a contactor KM1, one end of a coil of the intermediate relay K1 is electrically connected with the live wire, the other end of the coil of the intermediate relay K1 is electrically connected with the zero line, one end of a normally open contact of the intermediate relay K1 is electrically connected with the live wire, and the other end of the normally open contact of the intermediate relay K1 is electrically connected with the zero line. One end of a coil of the contactor KM1 is electrically connected with the other end of the normally open contact of the intermediate relay K1, and the other end of the coil of the contactor KM1 is electrically connected with the zero line. The contactor is driven by the intermediate relay, the intermediate relay K1 serves as a control stage, the coil power consumption is small, direct and safe driving can be achieved through a passive dry contact signal of a steam turbine speed regulator, and the problem that a large-current load impacts a precision controller is solved.

Embodiments of this application provide an optical module and an optical communication system, to resolve a technical problem of low heat dissipation efficiency of an optical module. The optical module includes a first device, a second device, and a housing cover. The housing cover includes a first cavity and a second cavity. A working medium in the first cavity is used to dissipate heat from the first device, and a working medium in the second cavity is used to take away heat of the second device. For example, heat of the first device is transferred by means of heat transfer to a surface of the housing cover close to the first device, the heat enters the first cavity via the surface, the working medium in the first cavity transfers the heat to a cavity surface of the first cavity facing away from the first device, and then the heat is transferred to the outside of the optical module via the surface of the housing cover facing away from the first device. The use of separate heat dissipation of the first device and the second device allows for a reduction in power density (power consumption per unit area) on the surface of the housing cover, thereby reducing a dry contact temperature difference, and improving heat dissipation efficiency of the optical module.

The utility model relates to the technical field of intelligent building, specifically disclose 12 way controller of wireless ad hoc network, including ad hoc network wireless module, 485 control unit, button control unit, dry contact control unit, relay control unit, LED pilot lamp unit and power unit and IO extension unit, relay control unit can realize the electrical isolation of control circuit and load circuit, avoid mutual interference, improve the security and reliability of circuit, can be combined flexibly according to actual demand simultaneously through multiple relay independent control, realize the individual or synergic control of different load, simultaneously, through multiple interfaces in 485 control unit, can build distributed system, can connect multiple sensors, actuator and other equipment, realize efficient networking, thereby realize centralized management, improve operation efficiency.

The application relates to the technical field of communication base stations and security monitoring of machine rooms, in particular to a dry contact anti-theft sensor performance enhancement active device which comprises an NE555 chip, a triode, an intermediate relay, an upper pull resistor, an external monitoring loop and a filter capacitor; the 1st pin of the NE555 is grounded, the 4th pin and the 8th pin are connected with a power supply VCC, the 5th pin is grounded through a capacitor, the 2nd pin and the 6th pin are short-circuited as a detection end, the 7th pin is connected to the 2nd pin / 6th pin through an external resistor and a monitoring copper wire, and the 3rd pin output is connected with the base of the triode through a current-limiting resistor; whether a thief cuts the circuit or short-circuits the circuit in advance, the device outputs an alarm, the biggest vulnerability of a traditional dry contact is completely blocked, the three states of normal, disconnection and short-circuit can be accurately distinguished, the logic is rigorous, there is no dead angle, a passive weak signal is converted into an active strong signal, the transmission distance is farther, the anti-interference is stronger, the false alarm rate is lower, the output is a standard dry contact, the device can be directly connected with a dynamic ring collector, a platform does not need to be transformed, and a sensor does not need to be replaced.

The application provides a lifting roller way control system and a control method thereof, an electronic device and a storage medium. The system comprises a programmable logic controller, a relay module, a relay dry contact module, a contactor module, a frequency converter module and a communication module. The programmable logic controller is used to generate a lifting roller way lower limit position signal according to a target roller way lower limit position, generate a lifting roller way closing signal through the closing of a target contactor in the contactor module, and receive a cutting start signal. The relay module is used to close the target contactor in the contactor module through a target dry contact in the relay dry contact module based on the lifting roller way lower limit position signal. The frequency converter module is used to control the rotation of the target roller way based on the lifting roller way closing signal, the lifting roller way lower limit position signal and the cutting start signal. The communication module is used to transmit a target first signal. The application makes the steel slag roll down, reduces the number of manual cleaning of the steel slag, and reduces the degradation speed of the target roller way.

The invention discloses a linkage logic control method for a 400kWh energy storage cabinet, and relates to the technical field of energy storage system control, and the method comprises the steps: 1, information collection, 2, linkage control processing, 3, response execution, multi-dimensional data collection, direct cell data collection by a battery management system (BMS) to ensure accuracy, and active state transmission by an energy storage converter PCS. Fire-fighting key alarm realizes millisecond-level response through dry contact direct connection, provides accurate data for linkage control, avoids errors caused by information problems, improves safety through various strategy regulation and control, generates derating or zeroing instructions to prevent fault expansion, improves reliability through a three-level decision mechanism, accurately responds to temperature and fire-fighting alarm, facilitates troubleshooting through log records, and is suitable for popularization and application. Instruction landing and collaboration are ensured, a physical signal display state is converted, key instruction priority is guaranteed, fire extinguishing response is optimized, energy efficiency is improved through multi-mode collaboration, and control logic efficiency is exerted.

The utility model relates to the technical field of tripping monitoring equipment, and discloses tripping monitoring protection equipment which comprises an electric brake body, the output end of the electric brake body is connected with a load through a first electric wire, the first electric wire is connected with a second electric wire, and the other end of the second electric wire is connected with monitoring protection equipment. The monitoring protection device comprises an audible and visual alarm and a storage battery which are connected through a third electric wire, and the third electric wire is connected with a dry contact switch capable of controlling on-off of the third electric wire. Compared with the prior art, the utility model has the advantages that when the electric brake trips, an alarm can be given to remind personnel to repair in time.

The utility model provides withstand voltage detection equipment for an integrated circuit board. The withstand voltage detection equipment comprises a base, a feeding and discharging cylinder, a bearing piece, a material tray group and a pressing test assembly, the loading-unloading cylinder is arranged in the middle of the base; the bearing piece is arranged on the base; the material tray group is arranged on the bearing piece; the material tray group is in sliding connection with the bearing piece through a sliding rail; the material disc set is connected with the output end of the feeding and discharging air cylinder. The material tray group comprises upper and lower material baskets, a plurality of lower contacts, a material tray and a sealing cover; the feeding and discharging basket is in sliding connection with the bearing piece. The lower contact is arranged at the bottom of the feeding and discharging basket; the material tray is arranged in the upper and lower material baskets; the sealing cover is arranged on the upper and lower material baskets; a plurality of circuit board placing grooves are formed in the material disc; the lower contacts are in one-to-one correspondence with the circuit board placing grooves; and the pressing test assembly is arranged above the bearing piece. According to the withstand voltage detection equipment for the integrated circuit board, the plurality of contacts and the detection positions are designed, so that a plurality of circuit boards can be conveniently put into the detection equipment for detection, the detection efficiency is greatly improved, and the detection cost is reduced.

The invention discloses a signal acquisition circuit and method compatible with dry and wet contacts, and relates to the technical field of industrial control electronic circuits. The circuit comprises an input terminal used for receiving an external signal, a relay module comprising a plurality of groups of contacts and a driving circuit, a system power supply, a voltage detection point arranged in an input loop, and a processor which is connected with the voltage detection point and the relay module to carry out signal identification and circuit switching control. Input signal characteristics are monitored in real time through a voltage detection point, and signal types are judged by a processor: when effective voltage is detected, the effective voltage is identified as a wet contact signal, and a relay is controlled to maintain a default state to directly collect the signal; when no effective voltage is detected, the signal is identified as a dry contact signal, and the relay is controlled to switch the state to enable a system power supply to access a loop for power supply. According to the invention, self-adaptive compatible acquisition of dry and wet contact signals on a single interface is realized, the problem of resource waste of a traditional circuit interface is effectively solved, and the system integration level and the use convenience are improved.

The invention relates to a multi-module unit and a control method of the multi-module unit, the multi-module unit belongs to energy-saving air conditioning equipment, and a first main control board in a first module is connected with second main control boards in a plurality of second modules through a communication bus; the first main control board comprises a first dry contact signal detection circuit for detecting a first dry contact signal and a second dry contact signal detection circuit for detecting a first enable signal; the first main control board is used for determining whether the first dry contact signal is an effective signal or not according to the first enable signal, if the first dry contact signal is the effective signal, the working state of the first module is controlled based on the first dry contact signal, and the first dry contact signal is sent to the plurality of second main control boards through the communication bus; and the second main control board is used for controlling the working state of the second module according to the first dry contact signal. According to the embodiment of the invention, the signal anti-interference capability can be improved, mistaken start and stop of a unit are avoided, and the energy-saving effect is realized.

The invention discloses a multi-stage fault diagnosis and locking linkage method of a high-voltage locking device, relates to the technical field of high-voltage locking, and is suitable for 3.6-40.5 kV power distribution equipment. The method comprises the following steps: firstly, synchronously sampling and self-checking bus voltage, fault current and temperature and humidity in a cabinet, and packaging a multi-source data frame; the device health degree, the loop integrity and the electrification state are calculated through hierarchical Bayesian and evidence fusion and are compressed into comprehensive diagnosis codes; a locking action sequence is generated according to the diagnosis code look-up table, and the electric lock catch, the mechanical lock pin and the magnetic latching relay are driven to be sequentially closed and self-locked after power loss; a locking completion vector and a retention margin are split into a bulletin bit frame and a state packet frame, the bulletin bit frame and the state packet frame are reported through a passive dry contact and an encrypted NB-IoT double link, communication heartbeat is automatically adjusted and power consumption is indicated according to a continuation index, accurate diagnosis, reliable locking, far-end transparency and long-time retention are realized, and the safety of a distribution network is improved.

The application discloses a fireproof curtain control system supporting compatibility of new and old devices, and realizes compatible linkage of new and old fireproof curtains and a standardized fire bus protocol host through a dual-mode controller with a built-in protocol abstraction engine and a dynamic driving module. The protocol abstraction engine parses host protocol instructions into device-independent function operation codes, unifies heterogeneous fireproof curtain feedback signal formats, eliminates protocol interaction barriers, and enables the host to standardize management of different types of devices. The dynamic driving module switches driving modes according to device types, and outputs dry contact points or configurable level signals through an optocoupler isolation circuit to realize control and state acquisition for fireproof curtains with old electrical interfaces; for fireproof curtains with new communication protocols, protocolized instructions are transmitted through a serial bus, and the old device hardware does not need to be modified to access the new system, thereby solving the compatibility problem caused by protocol differences between new and old devices, reducing system upgrade costs, and improving the compatibility and expansibility of the fire fighting system.

The utility model relates to super capacitor management technical field discloses a kind of super capacitor hardware protection circuit, including multiple super capacitor circuits and a dry contact point, multiple the parallel connection between the super capacitor circuit, and the chip U2 of the super capacitor circuit is all led out and is connected with dry contact point, the super capacitor circuit includes super capacitor monomer, chip U1, chip U2, MOS tube, light emitting diode LED, capacitor C1, triode Q1 and Q2, and resistance R1, R2, R3, R4, R5 and R6, the anode of the super capacitor monomer is connected to the Vin pin of chip U1, the Vout pin of the chip U1 is connected to MOS tube conduction pin on resistance R3. In the utility model, the protection circuit of super capacitor pack is formed by the series connection of multiple identical circuits, to avoid damage or safety hazard of super capacitor due to inconsistency of monomer, to ensure consistency of super capacitor pack monomer by this circuit, to avoid safety hazard caused by overcharge, to prolong the life of product.

This invention provides a multi-power integrated electrical interlocking device, relating to the field of low-voltage electrical technology. It includes: multiple signal conversion modules and an interlocking connection module. The interlocking connection module includes multiple interlocking connection units corresponding to each signal conversion module. Each interlocking connection unit includes an interlocking wiring network. Each signal conversion module includes one input terminal and multiple output terminals. The input terminal is connected to the status node of a circuit breaker in the multi-power system, and the multiple output terminals are connected to the corresponding interlocking connection unit. Each signal conversion module converts the input signal of the target circuit breaker's status node into multiple sets of dry contact signals. The interlocking wiring network is connected based on the interlocking logic of the corresponding target circuit breaker. The interlocking connection unit performs interlocking control on the corresponding target circuit breaker through the interlocking wiring network and the multiple sets of dry contact signals. This invention achieves forced interlocking between multiple power sources through hardware-level interlocking design without the need for external interlocking lines.