Intelligent air switch

Abstract

The invention provides an intelligent air switch, which comprises an air switch module, and is characterized in that the air switch module at least comprises a voltage and current acquisition module, a motor driving module, a mechanical linkage mechanism, a controller and a communication interface; the voltage and current acquisition module is used for acquiring voltage and current parameters of a line connected with the voltage and current acquisition module, preprocessing the acquired voltage and current parameters and transmitting electrical parameters obtained after processing to the controller; the motor driving module is used for driving the handle mechanism to control opening and closing; the mechanical linkage mechanism comprises a current quick-acting module consisting of an electromagnetic coil and a current overload protection module consisting of double metal reeds, and is used for driving a handle to release; and the controller is used for collecting the electrical parameters and outputting corresponding driving signals to the motor driving module. According to the invention, comprehensive investigation is carried out on the power utilization safety condition of a user, real-time monitoring and data analysis can be carried out on an electrical circuit, and the safety of the power utilization circuit is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of air switches, and in particular to an intelligent air switch. Background Art

[0002] According to statistics, electrical fires account for 42.7% of fires in residential areas. The main reasons are: leakage, short circuit, overload or excessive contact resistance of the line, which leads to electric sparks, arcs or overheating and burning of wires and cables, which quickly turn into a fire. In order to eliminate safety hazards and ensure safe use of electricity. How to achieve real-time monitoring and data analysis of the voltage, current, temperature, arc, etc. of electrical lines, and to warn of overvoltage, overload, overcurrent, overtemperature, undervoltage, sparking, phase loss, three-phase imbalance and other situations of the protected lines has become the key to ensuring safe use of electricity. Summary of the invention

[0003] The purpose of the present invention is to propose a method to solve the technical problem of how to conduct a comprehensive investigation on the safety of users' electricity use.

[0004] On the one hand, an intelligent air switch is provided, comprising:

[0005] The circuit breaker module includes at least a voltage and current acquisition module, a motor drive module, a mechanical linkage mechanism, a controller and a communication interface;

[0006] The voltage and current acquisition module is used to acquire the voltage and current parameters of the lines connected thereto, pre-process the acquired voltage and current parameters, and transmit the processed electrical parameters to the controller;

[0007] The motor drive module is used to drive the handle mechanism to control the opening and closing of the switch;

[0008] The mechanical linkage mechanism includes a current quick-acting module composed of an electromagnetic coil and a current overload protection module composed of a bimetallic spring, which is used to drive the handle to release;

[0009] A controller, used to collect electrical parameters and output corresponding drive signals to the motor drive module;

[0010] The first communication interface is used for serial communication.

[0011] Preferably, it also includes a communication module, which is used to provide communication to each component in the air switch module through the first communication interface and communicate with other connected intelligent air switches.

[0012] Preferably, it also includes a power supply component for converting the acquired alternating current into direct current to power the circuit breaker module and the communication module.

[0013] Preferably, the communication module at least includes:

[0014] The signal processing module is used to convert the input signal into a level signal that the controller can recognize, and realizes the isolation of the two signals;

[0015] The communication module controller is used to convert the external field bus protocol into a communication protocol that can be used inside the circuit breaker module, thereby realizing communication between the outside and inside of the circuit breaker module.

[0016] Preferably, the communication module further includes a second communication interface for serial communication between the communication module and the circuit breaker module.

[0017] Preferably, the communication module further includes a power supply module for converting the direct current converted by the power supply component into a corresponding current signal again to realize power supply to the signal processing module, the communication module controller and the communication interface.

[0018] Preferably, the controller is specifically used to monitor the real-time temperature of the circuit breaker module, and output over-temperature warning information when the real-time temperature is between the first preset temperature threshold and the second preset temperature threshold;

[0019] When the real-time temperature exceeds the second preset temperature threshold, an over-temperature alarm message is output and the line is disconnected.

[0020] Preferably, the controller is specifically used to set the corresponding maximum power value and maximum current value if the electrical parameters are within the preset rated power and rated current range of the circuit breaker;

[0021] When the load power value of the circuit breaker exceeds the set maximum power value or the current value exceeds the set maximum current value, a disconnect signal is output and the motor drive module and the mechanical linkage mechanism are controlled to open.

[0022] Preferably, the controller is specifically used to output corresponding alarm information if the loop current exceeds a preset overcurrent limit value or the real-time power of the load is higher than a preset overload alarm value.

[0023] Preferably, the controller is specifically used to monitor the temperature of the connection terminal, and when the temperature of the connection terminal is higher than a set over-temperature alarm value, output an alarm message and execute a preset circuit breaker protection action;

[0024] When it is detected that the load line has continuous arcing due to poor contact and reaches the set alarm threshold within a preset time period, an alarm message is output.

[0025] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0026] The intelligent air switch provided by the present invention can realize a comprehensive investigation of the user's electricity safety situation, can monitor the voltage, current, temperature, arc, etc. of the electrical line in real time and perform data analysis, and give early warnings for overvoltage, overload, overcurrent, overtemperature, undervoltage, sparking, phase loss, three-phase imbalance, etc. of the protected line. When an electrical fire warning is found, the information can be promptly notified and processed through multiple channels to ensure the safety of the power line system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0028] Figure 1 The figure is a schematic diagram of an intelligent air switch in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 FIG. 1 is a schematic diagram of an embodiment of an intelligent air switch provided by the present invention.

[0031] In this embodiment, it includes:

[0032] The circuit breaker module at least includes a voltage and current acquisition module, a motor drive module, a mechanical linkage mechanism, a controller and a communication interface; the voltage and current acquisition module is used to collect the voltage and current parameters of the line connected to it, and pre-process the collected voltage and current parameters, and transmit the processed electrical parameters to the controller; the motor drive module is used to drive the handle mechanism to control the opening and closing of the switch; the mechanical linkage mechanism includes a current quick-acting module composed of an electromagnetic coil and a current overload protection module composed of a bimetallic spring, which is used to drive the handle to trip; the controller is used to collect electrical parameters and output corresponding drive signals to the motor drive module; the first communication interface is used for serial communication. It can be understood that the circuit breaker module is the core component in the entire group of modules, responsible for the acquisition of line electrical parameters, as well as opening and closing control. The voltage and current acquisition module is responsible for collecting the voltage and current parameters of the line, preprocessing and transmitting them to the controller; the motor drive module: composed of a DC motor, responsible for driving the handle mechanism, controlling the opening and closing of the switch; the mechanical linkage structure: contains a current quick-acting module composed of an electromagnetic coil and a current overload protection module composed of a bimetallic spring, which is used to drive the handle to trip. The controller is responsible for collecting electrical parameters and outputting drive signals to the motor drive module. The communication interface is mainly used for serial communication with communication components. By monitoring and managing the fire hazard parameters such as leakage current, overload current, overvoltage / phase loss, line temperature rise, power, etc. of the distribution circuit and power supply line, once the power supply line has leakage, overload, short circuit, overvoltage, phase loss, overheating, etc., which exceed the set value signal, it can quickly and accurately send out sound, light and voice warning (alarm) signals, indicate the alarm location, record the alarm time, display the alarm type, and send the alarm information to the monitoring center and monitoring client remotely through the communication network (GPRS, NB-IOT, WIFI, LORA wireless transmission, etc.) using wireless network technology. Through various means, it reminds relevant personnel to deal with the dangerous situation in time, and can guide users to realize the processing information feedback from the monitoring center to the front-end detection equipment, so as to prevent the occurrence of electrical fires.

[0033] One embodiment further includes a communication module, which is used to provide communication to each component in the air switch module through the first communication interface, and communicate with other connected intelligent air switches. Among them, the communication module at least includes a signal processing module, which is used to convert the input signal into a level signal that can be recognized by the controller, and realizes the isolation of the two signals; a communication module controller, which is used to convert the external field bus protocol into a communication protocol that can be used inside the air switch module, and realize the communication between the outside and inside of the air switch module. The communication module also includes a second communication interface, which is used for serial communication between the communication module and the air switch module. The communication module also includes a power supply module, which is used to convert the direct current converted by the power supply component into a corresponding current signal again, and realize the power supply to the signal processing module, the communication module controller and the communication interface. It can be understood that the function of the communication component is to provide 485 communication for each air switch component internally, support the use of multiple air switch components in series; and to communicate with the platform externally. The power supply will give the 12V direct current converted by the external power supply to the internal power supply of the communication module, convert it into a lower voltage 3.3V, supply the internal circuit, and realize the internal operation of the module. The signal processing module is an RS485 module, which mainly converts the 485 signal into a level signal that the controller can recognize, and realizes the isolation of the two signals. Communication interface: mainly used for serial communication with air switch components. The internal controller mainly converts the external 485 fieldbus protocol into the communication protocol of the internal air switch components, realizing the communication between the external and internal air switch components.

[0034] One embodiment further includes a power supply component for converting the acquired AC power into DC power to supply power to the circuit breaker module and the communication module. The power supply supplies the 12V DC power converted by the external power supply module to the power supply module inside the communication module, converting it into a lower voltage of 3.3V to supply the internal circuit to realize the internal operation of the module.

[0035] In a specific embodiment, the controller is specifically used to monitor the real-time temperature of the air switch module. When the real-time temperature is between the first preset temperature threshold and the second preset temperature threshold, an over-temperature warning message is output; when the real-time temperature exceeds the second preset temperature threshold, an over-temperature alarm message is output and the line is disconnected. It is understandable that the air switch has an over-temperature protection function, and the air switch should have a line terminal, and the temperature monitoring range is -20℃-100℃; when the air switch monitors the temperature between 70-90℃, the air switch meets the local and remote push of over-temperature warning messages; when the air switch monitors the temperature over 90℃, the air switch meets the local and remote push of over-temperature alarm messages, and disconnects the line; the air switch has warning and alarm threshold adjustment, and the adjustment unit is 1℃; the air switch has whether to meet the alarm and whether to open the switch function settings.

[0036] The controller is specifically used to set the corresponding maximum power value and maximum current value if the electrical parameters are within the preset rated power and rated current range of the circuit breaker; when the load power value of the circuit breaker exceeds the set maximum power value or the current value exceeds the set maximum current value, a disconnect signal is output, and the motor drive module and the mechanical linkage mechanism are controlled to open. It can be understood that it has an overload protection function: within the rated power and rated current range of the circuit breaker, the "maximum power value" and "maximum current value" can be set for the circuit breaker through the remote control platform. When the load power value or current value of the circuit breaker exceeds the set "maximum power value" and "maximum current value", the circuit breaker should automatically disconnect, and the minimum power adjustment scale is 1W.

[0037] The controller is specifically used to output corresponding alarm information if the loop current exceeds the preset overcurrent limit value or the real-time load power is higher than the preset overload alarm value. Overcurrent protection is performed in accordance with national standards. When the loop current exceeds the overcurrent limit value, an alarm message can be pushed. The device should meet the alarm threshold adjustment with an adjustment accuracy of 1A.

[0038] The controller is specifically used to monitor the temperature of the wiring terminals. When the temperature of the wiring terminals is higher than the set over-temperature alarm value, an alarm message is output and a preset circuit breaker protection action is executed; when it is detected that the load line has continuous arcing due to poor contact and reaches the set alarm threshold within a preset time period, an alarm message is output. It has line wiring terminal temperature monitoring. When the temperature of the wiring terminals is higher than the set over-temperature alarm value, an alarm message can be pushed and a circuit breaker protection action is executed; when the load line has continuous arcing (sparking) due to poor contact and reaches the set alarm threshold within a certain period of time, an alarm message can be pushed; it supports the function of adjusting the alarm protection value (threshold) so that the alarm thresholds such as over-current, overload, and over-temperature can be adjusted as needed to meet actual needs.

[0039] In one embodiment, the controller can also monitor and display the voltage, current, power, temperature and other working parameters in the circuit; intelligent monitoring alarm and safety protection: short circuit, overload, overcurrent, sparking, high temperature; electromagnetic tripping characteristics: 5 to 20 times the rated current; shell fire rating: the shell adopts high-specification fire-retardant materials such as PA66, and the fire rating reaches V0 level; leakage current monitoring and protection: the circuit breaker with leakage protection function must have current monitoring function while meeting the national standard, and can read the leakage current value in real time; the circuit breaker with leakage monitoring function meets the monitoring range of 0-2000mA; the circuit breaker with leakage monitoring function meets the leakage warning and alarm threshold adjustment, and the adjustment unit is 1mA; the circuit breaker with leakage monitoring function meets the alarm whether to open the switch function setting.

[0040] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0041] The intelligent air switch provided by the present invention can realize a comprehensive investigation of the user's electricity safety situation, can monitor the voltage, current, temperature, arc, etc. of the electrical line in real time and perform data analysis, and give early warnings for overvoltage, overload, overcurrent, overtemperature, undervoltage, sparking, phase loss, three-phase imbalance, etc. of the protected line. When an electrical fire warning is found, the information can be promptly notified and processed through multiple channels to ensure the safety of the power line system.

[0042] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An intelligent air switch, characterized in that: include: The circuit breaker module includes at least a voltage and current acquisition module, a motor drive module, a mechanical linkage mechanism, a controller and a communication interface; The voltage and current acquisition module is used to acquire the voltage and current parameters of the lines connected thereto, pre-process the acquired voltage and current parameters, and transmit the processed electrical parameters to the controller; The motor drive module is used to drive the handle mechanism to control the opening and closing of the switch; The mechanical linkage mechanism includes a current quick-acting module composed of an electromagnetic coil and a current overload protection module composed of a bimetallic spring, which is used to drive the handle to release; A controller, used to collect electrical parameters and output corresponding drive signals to the motor drive module; The first communication interface is used for serial communication.

2. The intelligent air switch according to claim 1, characterized in that: It also includes a communication module, which is used to provide communication to each component in the air switch module through the first communication interface and communicate with other connected intelligent air switches.

3. The intelligent air switch according to claim 2, characterized in that: It also includes a power supply component for converting the acquired alternating current into direct current to power the circuit breaker module and the communication module.

4. The intelligent air switch according to claim 2, characterized in that: The communication module at least includes: The signal processing module is used to convert the input signal into a level signal that the controller can recognize, and realizes the isolation of the two signals; The communication module controller is used to convert the external field bus protocol into a communication protocol that can be used inside the circuit breaker module, thereby realizing communication between the outside and inside of the circuit breaker module.

5. The intelligent air switch according to claim 4, characterized in that: The communication module also includes a second communication interface, which is used for serial communication between the communication module and the circuit breaker module.

6. The intelligent air switch according to claim 5, characterized in that: The communication module also includes a power supply module, which is used to convert the direct current converted by the power supply component into a corresponding current signal again, so as to power the signal processing module, the communication module controller and the communication interface.

7. The intelligent air switch according to claim 1, characterized in that: The controller is specifically used to monitor the real-time temperature of the circuit breaker module, and output over-temperature warning information when the real-time temperature is between a first preset temperature threshold and a second preset temperature threshold; When the real-time temperature exceeds the second preset temperature threshold, an over-temperature alarm message is output and the line is disconnected.

8. The intelligent air switch according to claim 1, characterized in that: The controller is specifically used to set the corresponding maximum power value and maximum current value if the electrical parameters are within the preset rated power and rated current range of the circuit breaker; When the load power value of the circuit breaker exceeds the set maximum power value or the current value exceeds the set maximum current value, a disconnect signal is output and the motor drive module and the mechanical linkage mechanism are controlled to open.

9. The intelligent air switch according to claim 1, characterized in that: The controller is specifically used to output corresponding alarm information if the loop current exceeds a preset overcurrent limit value or the real-time power of the load is higher than a preset overload alarm value.

10. The intelligent air switch according to claim 1, characterized in that: The controller is specifically used to monitor the temperature of the wiring terminal, and when the temperature of the wiring terminal is higher than the set over-temperature alarm value, output alarm information and execute a preset circuit breaker protection action; When it is detected that the load line has continuous arcing due to poor contact and reaches the set alarm threshold within a preset time period, an alarm message is output.

Images