Remote monitoring alarm system for electricity metering box
By designing a remote monitoring and alarm system for electricity meter boxes, using magnetic parts and reed switches to detect the status of the box door, and combining communication modules and sensors to achieve real-time monitoring, the problems of long inspection cycles and low abnormality detection rates are solved, and the detection efficiency and timeliness of abnormality handling are improved.
Patent Information
- Application Number
- CN202422818931.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing technology, the inspection cycle of electricity meter boxes is long, the abnormality detection rate is low, and it cannot be handled in a timely manner, which affects customer perception and has high detection costs.
A remote monitoring and alarm system for electricity meter boxes is designed, which includes a control module, a power supply module, a communication module, and a box door detection module. Magnetic components and reed switches are used to detect the box door status. Remote monitoring is achieved through the communication module, and smoke sensors and temperature and humidity sensors are equipped for real-time anomaly detection.
It realizes remote monitoring of the opening and closing of the electricity meter box door, with fast response and high detection accuracy, which reduces the cost of manual inspection and improves the timely detection rate of abnormal situations.
Smart Images
Figure CN223401281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electricity box monitoring, and in particular to a remote monitoring and alarm system for an electricity meter box. Background Art
[0002] With the rapid development of my country's economy, the demand for electricity is increasing. However, driven by economic interests, electricity theft is becoming increasingly serious, and the technology behind theft is becoming increasingly sophisticated. State Grid Corporation's latest metering management regulations stipulate that all units at all levels should actively implement smart metering boxes to promptly detect and quickly address any anomalies on site.
[0003] To meet the latest requirements of the State Grid Corporation of China, anti-theft efforts are being strengthened to promptly detect and address any illegal opening of meter boxes and tampering with metering devices. The current approach to addressing unauthorized meter box openings is manual inspections. However, the large scope of inspections and the lengthy inspection cycles result in low efficiency.
[0004] At present, the on-site inspection cycle of the meter box is long, the abnormality detection rate is low, and the abnormalities cannot be handled in time, resulting in serious consequences and affecting customer perception. This is far from the professional requirements of the Fuxing Center and this situation needs to be resolved urgently!
[0005] In order to ensure the safe operation of the metering device, promptly detect abnormal conditions on site, and strengthen customer-side electricity management, we need a remote monitoring and alarm device that can realize the opening and closing of the electricity meter box door, realize real-time monitoring of abnormal conditions on site, and improve the current situation. Utility Model Content
[0006] The utility model provides a remote monitoring and alarm system for an electricity meter box, which solves the technical problems of high cost and low efficiency in the prior art for detecting illegal opening of an electricity meter box.
[0007] The technical solution of the utility model is as follows:
[0008] A remote monitoring and alarm system for an electricity meter box includes a control module, a power supply module, a communication module, and a box door detection module. The power supply module supplies power to the entire alarm system. The box door detection module includes a magnetic component arranged on the electricity meter box door, a reed switch arranged on the electricity meter box door frame, and a door opening signal detection circuit. The door opening signal detection circuit includes a resistor R1 and a resistor R2. The first end of the reed switch is connected to a power supply VCC1, and the second end of the reed switch is grounded via the resistor R1. The second end of the reed switch is connected to the control module via the resistor R2, and a door opening signal sig_1 is sent to the control module. The control module communicates with a terminal via the communication module.
[0009] Furthermore, the door opening signal detection circuit also includes a relay K1, an indicator light LED1 and a buzzer B1. The input end of the relay K1 is connected in series between the resistor R1 and the ground, the normally closed end of the relay K1 is grounded, the common end of the relay K1 is connected to the cathode of the indicator light LED1, the anode of the indicator light LED1 is connected to the negative pole of the buzzer B1, and the positive pole of the buzzer B1 is connected to the power supply VCC2.
[0010] Furthermore, the door opening signal detection circuit also includes an optocoupler U2, a transistor Q1, a resistor R3 and a resistor R4. The base of the transistor Q1 is connected to the control module through the resistor R3, the collector of the transistor Q1 is connected to the power supply VCC1, the emitter of the transistor Q1 is connected to the first input end of the optocoupler U2, the second input end of the optocoupler U2 is grounded through the resistor R4, and the output end of the optocoupler U2 is connected in series between the indicator light LED1 and the relay K1.
[0011] Furthermore, the alarm system also includes a smoke sensor and a temperature and humidity sensor, both of which are arranged inside the electricity meter box, and the output ends of the smoke sensor and the temperature and humidity sensor are connected to the control module.
[0012] Furthermore, the power supply module includes a power conversion circuit and a voltage stabilizing circuit. The power conversion circuit includes a rectifier D1, a backup battery U3, a relay K2, a diode D2 and a diode D3. The input end of the rectifier D1 is connected to the mains, the first output end of the rectifier D1 is connected to the first input end of the relay K2, the second input end of the relay K2 is connected to the anode of the diode D2, the cathode of the diode D2 is connected to the voltage stabilizing circuit, the second output end of the rectifier D1 is grounded, the negative pole of the backup battery U3 is grounded, the positive pole of the backup battery U3 is connected to the normally closed end of the relay K1, the common end of the relay K1 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the voltage stabilizing circuit.
[0013] The working principle and beneficial effects of the utility model are as follows:
[0014] In the present invention, the door opening detection of the electricity meter box is realized by relatively arranged magnetic parts and reed switches. When the electricity meter box is in the closed state, the reed switch is in the closed state under the action of the magnetic parts. At this time, the power supply VCC1 is grounded through the reed switch to form a path, and a high-level sig_1 signal is given to the control module through the resistor R2. When the electricity meter box is in the open state, the reed switch is separated from the action of the magnetic parts and is in the open state. At this time, the power supply VCC1 and the ground are in an open state, and a low-level sig_1 signal is given to the control module through the resistor R2. By receiving this signal, the current opening and closing status of the electricity meter box can be determined and sent to the terminal through the communication module. Through this technical solution, remote monitoring of the opening and closing of the electricity meter box door can be realized, with fast response and high detection accuracy, reducing the cost of manual inspection.
[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of a remote monitoring and alarm system for an electricity meter box in this utility model;
[0017] Figure 2 This is a circuit diagram of the door opening signal detection circuit in the present utility model;
[0018] Figure 3 This is a circuit diagram of the power conversion circuit in the utility model. DETAILED DESCRIPTION
[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example
[0020] Figure 1 This is the principle diagram of a remote monitoring and alarm system for electricity meter boxes in this utility model. Figure 2 This is a circuit diagram of the door opening signal detection circuit in the utility model, as shown in FIG. Figure 1-2As shown, this embodiment proposes a remote monitoring alarm system for an electricity meter box, including a control module, a power supply module, a communication module and a box door detection module. The power supply module supplies power to the entire alarm system. The box door detection module includes a magnetic part arranged on the electricity meter box door, a reed switch arranged on the electricity meter box door frame and a door opening signal detection circuit. The door opening signal detection circuit includes a resistor R1 and a resistor R2. The first end of the reed switch is connected to the power supply VCC1, and the second end of the reed switch is grounded through the resistor R1. The second end of the reed switch is connected to the control module through the resistor R2, and the door opening signal sig_1 is sent to the control module. The control module communicates with the terminal through the communication module.
[0021] In this embodiment, the door opening detection of the electricity meter box is realized by relatively arranged magnetic parts and reed switches. When the electricity meter box is in the closed state, the reed switch is in the closed state under the action of the magnetic parts. At this time, the power supply VCC1 is grounded through the reed switch to form a path, and a high-level sig_1 signal is given to the control module through the resistor R2. When the electricity meter box is in the open state, the reed switch is separated from the action of the magnetic parts and is in the open state. At this time, the power supply VCC1 and the ground are in an open state, and a low-level sig_1 signal is given to the control module through the resistor R2. By receiving this signal, the current opening and closing status of the electricity meter box can be judged and sent to the terminal through the communication module.
[0022] In one embodiment, the control module includes a single-chip microcontroller and its peripheral circuits, which perform simple signal transmission and reception processing. The power supply module, typically connected to the mains or a backup battery, converts electrical energy into the voltage and current required by each system module, providing a stable operating power source for the entire alarm system. This ensures continuous and stable system operation. The communication module facilitates data communication between the control module and remote terminals, which can use wired (such as RS-485, Ethernet) or wireless (such as GPRS, NB-IoT) methods. Remote terminals include monitoring personnel's mobile phones and monitoring centers.
[0023] further,
[0024] like Figure 2 As shown, the door opening signal detection circuit also includes a relay K1, an indicator light LED1 and a buzzer B1. The input end of the relay K1 is connected in series between the resistor R1 and the ground, the normally closed end of the relay K1 is grounded, the common end of the relay K1 is connected to the cathode of the indicator light LED1, the anode of the indicator light LED1 is connected to the negative pole of the buzzer B1, and the positive pole of the buzzer B1 is connected to the power supply VCC2.
[0025] In this embodiment, a local alarm can also be activated when the electricity meter door is opened. When the door is closed, the open state drives the input terminal of relay K1 to conduct. At this time, the common terminal of relay K1 is disconnected from the normally closed terminal, and the buzzer B1 and indicator LED1 are both inoperative. When the door is opened, the short circuit state causes the input terminal of relay K1 to be disconnected. At this time, the common terminal of relay K1 is connected to the normally closed terminal, triggering the lighting of indicator LED1 and the sounding of buzzer B1, thus triggering the local alarm.
[0026] further,
[0027] like Figure 2 As shown, the door opening signal detection circuit also includes an optocoupler U2, a transistor Q1, a resistor R3 and a resistor R4. The base of the transistor Q1 is connected to the control module through the resistor R3, the collector of the transistor Q1 is connected to the power supply VCC1, the emitter of the transistor Q1 is connected to the first input end of the optocoupler U2, the second input end of the optocoupler U2 is grounded through the resistor R4, and the output end of the optocoupler U2 is connected in series between the indicator light LED1 and the relay K1.
[0028] In this embodiment, on the basis of adding a local alarm, in order to avoid the situation where the staff opens the door to check the electricity meter box and a false alarm is triggered, before the inspection, the terminal device is used to communicate with the control module and the sig_2 signal output by the control module is changed from a high level to a low level to turn off the local alarm.
[0029] Under normal conditions, the sig_2 signal is a high-level signal, driving the transistor Q1 to turn on, and further driving the optocoupler U2 to turn on, so that the buzzer B1 and the indicator LED1 can work normally. When the sig_2 signal is a low-level signal, the transistor Q1 is cut off, and the optocoupler U2 is also cut off. The path of the buzzer B1 and the indicator LED1 is disconnected, and the relay K1 cannot directly drive them to work.
[0030] In one embodiment, the voltage of the power supply VCC2 is 12V, the voltage of the power supply VCC1 is 5V, and the relay K1 and the optocoupler U2 both serve as voltage isolation.
[0031] further,
[0032] like Figure 1 As shown, the alarm system also includes a smoke sensor and a temperature and humidity sensor. The smoke sensor and the temperature and humidity sensor are both arranged inside the electricity meter box, and the output ends of the smoke sensor and the temperature and humidity sensor are both connected to the control module.
[0033] further,
[0034] Figure 3 The circuit diagram of the power conversion circuit in this utility model is as follows: Figure 3As shown, the power supply module includes a power conversion circuit and a voltage stabilizing circuit. The power conversion circuit includes a rectifier D1, a backup battery U3, a relay K2, a diode D2 and a diode D3. The input end of the rectifier D1 is connected to the mains, the first output end of the rectifier D1 is connected to the first input end of the relay K2, the second input end of the relay K2 is connected to the anode of the diode D2, the cathode of the diode D2 is connected to the voltage stabilizing circuit, the second output end of the rectifier D1 is grounded, the negative pole of the backup battery U3 is grounded, the positive pole of the backup battery U3 is connected to the normally closed end of the relay K1, the common end of the relay K1 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the voltage stabilizing circuit.
[0035] In this embodiment, the power conversion circuit switches between mains power and a backup battery. Under normal conditions, the entire system is powered by the mains. If sabotage or a mains failure prevents normal power supply, the input of relay K2 is disconnected, the common terminal is automatically connected to the normally closed terminal, and the backup battery provides power to the entire system. Diodes D1 and D2 function as unidirectional conduction devices. Regardless of whether the system is powered by the mains or the backup battery, the output sig_3 signal is connected to the input of the voltage regulator circuit, which converts it to a stable voltage of 5V or 12V.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A remote monitoring and alarm system for an electricity meter box, characterized in that: It includes a control module, a power supply module, a communication module and a door detection module. The power supply module supplies power to the entire alarm system. The door detection module includes a magnetic part arranged on the electricity metering box door, a reed switch arranged on the electricity metering box door frame and a door opening signal detection circuit. The door opening signal detection circuit includes a resistor R1 and a resistor R2. The first end of the reed switch is connected to the power supply VCC1, and the second end of the reed switch is grounded through the resistor R1. The second end of the reed switch is connected to the control module through the resistor R2, and sends a door opening signal sig_1 to the control module. The control module communicates with the terminal through the communication module.
2. The remote monitoring and alarm system for an electricity meter box according to claim 1 is characterized in that: The door opening signal detection circuit also includes a relay K1, an indicator light LED1 and a buzzer B1. The input end of the relay K1 is connected in series between the resistor R1 and the ground, the normally closed end of the relay K1 is grounded, the common end of the relay K1 is connected to the cathode of the indicator light LED1, the anode of the indicator light LED1 is connected to the negative pole of the buzzer B1, and the positive pole of the buzzer B1 is connected to the power supply VCC2.
3. The remote monitoring and alarm system for an electricity meter box according to claim 2 is characterized in that: The door opening signal detection circuit also includes an optocoupler U2, a transistor Q1, a resistor R3 and a resistor R4. The base of the transistor Q1 is connected to the control module through the resistor R3, the collector of the transistor Q1 is connected to the power supply VCC1, the emitter of the transistor Q1 is connected to the first input end of the optocoupler U2, the second input end of the optocoupler U2 is grounded through the resistor R4, and the output end of the optocoupler U2 is connected in series between the indicator light LED1 and the relay K1.
4. The remote monitoring and alarm system for an electricity meter box according to claim 1 is characterized in that: The alarm system further comprises a smoke sensor and a temperature and humidity sensor, both of which are arranged inside the electricity meter box, and the output ends of the smoke sensor and the temperature and humidity sensor are connected to the control module.
5. The remote monitoring and alarm system for an electricity meter box according to claim 1 is characterized in that: The power supply module includes a power conversion circuit and a voltage stabilizing circuit. The power conversion circuit includes a rectifier D1, a backup battery U3, a relay K2, a diode D2 and a diode D3. The input end of the rectifier D1 is connected to the mains, the first output end of the rectifier D1 is connected to the first input end of the relay K2, the second input end of the relay K2 is connected to the anode of the diode D2, the cathode of the diode D2 is connected to the voltage stabilizing circuit, the second output end of the rectifier D1 is grounded, the negative pole of the backup battery U3 is grounded, the positive pole of the backup battery U3 is connected to the normally closed end of the relay K1, the common end of the relay K1 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the voltage stabilizing circuit.