Intelligent remote monitoring type dual power self-recovery switching device

Abstract

The utility model discloses a kind of intelligent remote monitoring type dual power self-recovery switching device, including sensor signal acquisition module, the output of sensor signal acquisition module is connected with control unit, control unit is connected with communication module, the output port of control unit is connected switching drive mechanism through drive circuit, switching drive mechanism connects main / standby power switch assembly input end, main / standby power switch assembly output end is connected with the input terminal of respective corresponding power, control unit is connected to the output of voltage / current detection module by signal line, voltage / current detection module is connected with the switching instruction input port between the output of control unit and control unit Self-recovery control circuit is connected with.The utility model realizes that automatic recovery main power supply after fault is removed, reduces manual intervention, improves power supply continuity.Provide the ability of remote real-time monitoring power state, device state, facilitate centralized monitoring and fault early warning.Improve system operation efficiency and intelligent level.

Description

Technical Field

[0001] This utility model relates to an intelligent remote monitoring type dual power supply self-recovery switching device, belonging to the fields of low-voltage electrical appliances, power switching devices, and electrical automation control equipment. Background Technology

[0002] Existing dual power supply switching systems (ATS) generally have insufficient structure and functionality (manual / automatic switching): they require manual on-site reset after fault clearance, which is inefficient, especially for unattended sites. They lack remote status monitoring, making it impossible to monitor power status and device operation in real time, resulting in slow fault response. Existing remote ATSs do not possess intelligent self-recovery capabilities. Summary of the Invention

[0003] The technical problem this invention aims to solve is: to address the issue that ordinary dual-power switching devices require manual on-site reset after a fault is cleared, lack intelligent self-recovery function, and cannot monitor power status and device operation in real time.

[0004] To solve the above-mentioned technical problems, the present invention provides an intelligent remote monitoring dual-power self-recovery switching device, characterized in that it includes a sensor signal acquisition module, the output end of which is connected to a control unit, the control unit is communicatively connected to a communication module, the output port of the control unit is connected to a switching drive mechanism via a drive circuit, the switching drive mechanism is connected to the input end of the main / backup power switch assembly, the output end of the main / backup power switch assembly is connected to the input terminal of its respective power supply, the control unit is connected to the output end of a voltage / current detection module via a signal line, and a self-recovery control circuit is connected between the output end of the voltage / current detection module and the switching command input port of the control unit.

[0005] Preferably, the self-recovery control circuit includes a delay control circuit, which is connected between the output of the voltage / current detection module and the switching command input port of the control unit.

[0006] Preferably, the delay control circuit includes a delay relay, the coil of which is connected in parallel in the main power supply voltage detection circuit, and its normally open contact is connected in series in the "switch back to main power supply" command input circuit of the control unit.

[0007] Preferably, the switching drive mechanism is composed of an electromagnet, and the coil of the electromagnet is controlled by the output port of the control unit through a drive circuit.

[0008] Preferably, the communication module is integrated on the circuit board of the control unit.

[0009] Preferably, the communication module is connected to the MCU of the control unit via a serial bus RS485.

[0010] Preferably, the sensor signal acquisition module includes a voltage sensor, a current sensor, a limit switch position sensor, and a status indicator light signal acquisition device that are acquired and connected to the communication module, and the communication module is equipped with a signal conditioning board.

[0011] Preferably, it also includes a mechanical interlocking mechanism, which is connected to both the main and backup power supplies.

[0012] Compared with the prior art, the present invention has at least one of the following beneficial effects: This invention enables automatic restoration of main power supply after a fault is cleared, reducing manual intervention and improving power supply continuity. It provides the ability to remotely monitor power status (main / backup power supply status, fault status, voltage and current values, etc.) and device status (switch position, self-recovery action records), facilitating centralized monitoring and fault early warning. It improves system operating efficiency and intelligence. Structural optimization results in faster switching speeds, smaller size, higher reliability, longer lifespan, and easier maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an intelligent remote monitoring type dual power supply self-recovery switching device. Detailed Implementation

[0014] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0015] This utility model provides an intelligent remote monitoring type dual power supply self-recovery switching device, such as... Figure 1 As shown, its hardware components include: main / backup power supply input terminals, main / backup power supply switching assembly, switching drive mechanism, control unit, voltage / current detection module, communication module, self-recovery control circuit, etc.

[0016] The switching control unit includes a switching drive mechanism and a control unit: connected to the output of the voltage detection module via a signal line; the switching drive mechanism is composed of an electromagnet, whose coil is controlled by the output port of the control unit via a drive circuit; the communication module is integrated on the control unit circuit board and communicates with the control unit's MCU via a serial bus RS485; the self-recovery control circuit includes a time-delay relay, whose coil is connected in parallel in the main power supply voltage detection circuit, and whose normally open contact is connected in series in the control unit's 'switch back to main power supply' command input circuit.

[0017] Self-recovery function: Implemented through a hardware link structure of trigger condition detection, delay confirmation, and action execution, including a delay control circuit connected between the output of the voltage detection module and the switching command input port of the control unit. The sensor signal acquisition module transmits the data to the communication module. The remote monitoring module (i.e., the RS485 interface board communication module), actuator, and mechanical interlock mechanism are integrated into the device. The mechanical interlock mechanism is connected to both main and backup power supplies.

[0018] The working process of this utility model is as follows: Normal failover process (primary -> backup). Hardware action steps for self-recovery after fault resolution (detection -> confirmation -> execution). The hardware process enables remote monitoring data acquisition and reporting, and remote command reception and execution.

[0019] The functions of each structure in this utility model are as follows: (1) Realization of "self-recoverable" mechanical / circuit structure: The unique control logic circuit structure (i.e. the circuit structure in the control unit) consists of a voltage comparator, a delay circuit, logic gate circuits, and a microcontroller unit working together (mainly reflected in the logic priority of the main power supply, that is, when the main power supply is detected to meet the recovery conditions, it is switched back to the main power supply) to achieve automatic detection, delayed confirmation, and switching instruction generation after the fault is cleared.

[0020] Innovative drive / actuator (i.e. switching drive mechanism): It converts the "self-recovering" electrical signal into a mechanical switching action, and adopts a special electromagnet design, motor drive structure, interlocking mechanism reset device.

[0021] A reliable fault detection mechanism is in place: the arrangement of voltage and current transformers, the design of the sampling circuit (i.e., the sensor signal acquisition module), and the structure of the signal processing circuit (filtering and shaping) ensure the accuracy and anti-interference capabilities of the detection. Fault detection is achieved when the main power supply voltage stabilizes at the set value, the frequency is normal, and the harmonic distortion rate remains below the threshold for a sustained period. When the main power supply voltage returns to stability for three cycles and the harmonic distortion rate is <5%, the system automatically switches back to the main circuit.

[0022] The voltage transformers and current transformers are arranged as follows: voltage transformers are installed across the parallel power supply terminals, and current transformers are installed through the power lines. For single-phase power supplies, one current transformer is used, passing through the live wire; for three-phase power supplies, three current transformers are used, passing through the three live wires. For 220V or 380V voltages, voltage transformers are not required.

[0023] (2) Hardware integration structure for remote monitoring: Physical structure of the monitoring interface module: The RS485 interface board communication module is installed and fixed inside the device, with heat dissipation and anti-interference design.

[0024] The hardware path of the sensor signal acquisition module is as follows: voltage and current sensors, limit switch position sensors, and status indicator lights are acquired and connected to the communication module with a signal conditioning board.

[0025] Local status indication and remote association: The local indicator display structure (i.e., status indicator) is consistent with the remote monitoring data and has a shared drive circuit.

[0026] (3) Improvements to the dual power supply switching mechanism itself: Layout or connection structure of main / backup power switch components: Optimize the arrangement of contactors and circuit breakers (keeping them as close as possible without affecting cable wiring) to reduce size, improve heat dissipation, and facilitate maintenance.

[0027] Mechanical interlocking mechanism: A structural design that ensures two power supplies cannot be connected simultaneously, physically preventing accidental closing. This includes the shape, connection relationships, and operating principles of mechanical components such as linkages, baffles, and ratchet (used for interlocking the two power supplies; interlock switching needs to be rapid). Structural optimizations aim to improve reliability, speed, lifespan, or safety.

[0028] Easy-to-install and maintain structure: Modular design, quick-connect terminals, and DIN rail mounting structure.

[0029] (4) Hardware collaborative structure of "self-recovery" and "remote monitoring" functions: Hardware architecture of the control unit: The microcontroller (MCU) simultaneously receives switching status signals, fault detection signals and remote command signals, and the design of input / output interface circuits.

[0030] Status feedback path: Dedicated status feedback sensors capture and feed back the success or failure of the self-recovery action to the remote monitoring module (i.e., the communication module).

[0031] Hardware structure for remote command execution: Command signals travel from the communication module to the control unit and then to the drive circuit. Remotely sent commands such as "force switch", "lock current power supply", and "reset" are received, parsed, and ultimately drive the actuator.

Claims

1. An intelligent remote monitoring type dual power supply self-recovery switching device, characterized in that, It includes a sensor signal acquisition module, the output of which is connected to the control unit. The control unit is connected to the communication module. The output port of the control unit is connected to the switching drive mechanism through a drive circuit. The switching drive mechanism is connected to the input of the main / backup power switch assembly. The output of the main / backup power switch assembly is connected to the input terminal of its respective power supply. The control unit is connected to the output of the voltage / current detection module through a signal line. A self-recovery control circuit is connected between the output of the voltage / current detection module and the switching command input port of the control unit.

2. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, The self-recovery control circuit includes a delay control circuit, which is connected between the output of the voltage / current detection module and the switching command input port of the control unit.

3. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 2, characterized in that, The delay control circuit includes a delay relay, the coil of which is connected in parallel in the main power supply voltage detection circuit, and its normally open contact is connected in series in the "switch back to main power supply" command input circuit of the control unit.

4. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, The switching drive mechanism is composed of an electromagnet, and the coil of the electromagnet is controlled by the output port of the control unit through a drive circuit.

5. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, The communication module is integrated on the circuit board of the control unit.

6. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, The communication module is connected to the MCU of the control unit via a serial bus RS485.

7. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, The sensor signal acquisition module includes a voltage sensor, a current sensor, a limit switch position sensor, and a status indicator light signal acquisition unit that are acquired and connected to the communication module. The communication module is equipped with a signal conditioning board.

8. The intelligent remote monitoring type dual power supply self-recovery switching device as described in claim 1, characterized in that, It also includes a mechanical interlocking mechanism, which connects the main and backup power supplies.

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