Bus duct detection device based on three-phase electric energy metering chip

Abstract

The invention relates to a bus duct detection device based on a three-phase electric energy metering chip, which is used for detecting temperature, humidity and voltage of an intensive bus duct and performing communication operation, and comprises a shell and a control circuit board arranged in the shell, the circuit board is electrically connected with a carrier communication module, a three-phase electric energy metering chip module, a temperature acquisition module, a humidity acquisition module, an MCU main control module and a power supply module; the beneficial effects of the invention are that the three-phase electric energy metering chip module can measure the effective value of each phase voltage, including phase voltages of A, B and C phases and line voltages among the phases, and supports a software meter calibration function at the same time, and the measurement precision is high; the system has a carrier communication function, can accurately collect the temperature and electrical information on the lines A, B, C and N of the bus duct and the overall humidity state of the device, has a remote upgrading function, and facilitates the updating and iteration of codes after the equipment is installed in the later period.

Description

Technical Field

[0001] The invention belongs to the field of electrical equipment, and in particular relates to a bus duct detection device based on a three-phase electric energy metering chip. Background Art

[0002] At present, the well-known bus duct is an electrical equipment, which is mainly used in power systems as a fixed conductor to connect power supply and load to realize the transmission and distribution of electric energy. It is composed of metal shell, conductive bar (busbar) and insulating material, etc., and has the characteristics of easy installation, large current carrying capacity, good heat dissipation performance and convenient maintenance. It is widely used in high and low voltage switch cabinets, distribution rooms and other occasions. In the application, the temperature and humidity data, voltage and current and other electrical signals of the bus duct are important information to judge whether it is working normally. The bus duct is generally installed in the basement, electrical shaft and other environments isolated by walls and floor slabs. In addition, the lines of many bus ducts are relatively long, which leads to challenges in the collection and communication of temperature and humidity data. At present, the monitoring methods for bus ducts include manual detection by infrared handheld instrument, detection by Zigbee wireless transmission communication method and detection by Ethernet transmission communication method with complicated wiring. These detection methods require additional human and material resources, have low work efficiency, and cannot accurately detect the temperature, phase voltage, line voltage between phases and other signals of the specific A line, B line, C line, and N line in the bus duct, and the detection information is not comprehensive enough.

[0003] Therefore, how to design a bus duct detection device that is convenient for communication, does not require the aid of additional circuit breakers or connector boxes, and can simultaneously detect the temperatures of the specific A lines, B lines, C lines, and N lines in the bus duct, the phase voltages of the A lines, B lines, and C lines, and the line voltages between the phases is the technical problem to be solved by the present invention. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a bus duct temperature measurement and power supply communication device to monitor the temperature, humidity and electrical signals of the bus duct, and remotely monitor multiple bus ducts through carrier communication.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] A bus duct detection device based on a three-phase electric energy metering chip, characterized in that it is used to detect the temperature, humidity and voltage of a dense bus duct and perform communication operations, comprising a housing, a circuit board arranged in the housing, and the circuit board is electrically connected with a carrier communication module, a three-phase electric energy metering chip module, a temperature acquisition module, a humidity acquisition module, an MCU main control module and a power supply module;

[0007] The power supply module is electrically connected to the carrier communication module, the three-phase electric energy metering chip module, the temperature acquisition module, the humidity acquisition module and the MCU main control module;

[0008] The carrier communication module is electrically connected to the power module and the MCU main control module;

[0009] The three-phase electric energy metering chip module is electrically connected to the power module and the MCU main control module;

[0010] The temperature acquisition module is electrically connected to the power module and the MCU main control module;

[0011] The humidity collection module is electrically connected to the power module and the MCU main control module;

[0012] The MCU main control module is electrically connected to the power supply module, the carrier communication module, the three-phase electric energy metering chip module, the temperature acquisition module and the humidity acquisition module;

[0013] The four ends of the four power interfaces in the power module are electrically connected to the circuit board, and the other four ends are provided with four thermocouple probes for contacting and connecting to the power supply bus trough, and the thermocouple probes have the functions of measuring temperature and conducting electricity; the three ends of the three fuse interfaces on the shell are connected to the circuit board, and the other three ends are electrically connected to the circuit board after passing through the fuses fixed on the shell.

[0014] As a preferred technical solution, the shell includes an upper shell and a lower shell, and the upper shell and the lower shell are fixed together by screws.

[0015] As a preferred technical solution, the fuse opening is arranged on the front side of the upper shell, and the thermocouple probe opening and the humidity sensor opening are arranged on the bottom of the lower shell.

[0016] As a preferred technical solution, an indication mark corresponding to the fuse is provided on the front of the upper shell, and an indication mark corresponding to the thermocouple probe and the humidity sensor is provided on the bottom of the lower shell.

[0017] As a preferred technical solution, the three-phase electric energy metering chip module can collect the voltage data of the bus in real time, including the phase voltages of phases A, B, and C, and the line voltages between phases, and supports software calibration function with high measurement accuracy.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The carrier communication module of the present invention supports the remote upgrade function. If there are changes to the equipment monitoring range and monitoring content in the future, the carrier communication module will identify and process the remote upgrade information in the power grid and send it to the MCU main control module through serial port communication. The MCU main control module can then perform the upgrade operation to improve operation and maintenance efficiency.

[0020] The three-phase electric energy metering chip module of the present invention can collect the voltage data of the bus in real time, including the phase voltages of phases A, B, and C, and the line voltages between the phases, and supports the software calibration function with high measurement accuracy. The electrical information of the bus duct can be detected without the operation of an external circuit breaker or an external plug-in box, thereby improving operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall schematic diagram of an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Exploded view of the embodiment shown.

[0023] Figure 3 It is a functional principle block diagram of the circuit board circuit. DETAILED DESCRIPTION

[0024] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1 , Figure 2 and Figure 3 , describing a specific implementation example of the present invention.

[0026] In the embodiment of the present application, a bus duct detection device 1 based on a three-phase electric energy metering chip is used to detect the temperature, humidity, and voltage of a dense bus duct and perform communication operations, and includes an upper housing 10 and a circuit board 20 arranged in the housing 10. The circuit board 20 is electrically connected to a carrier communication module 98, a three-phase electric energy metering chip module 97, a temperature acquisition module 92, a humidity acquisition module 95, a MUC main control module 94, and a power module 93. Four openings 60 corresponding to thermocouple probes 91 are arranged on the circuit board 20. The power module includes four power interfaces 81, 83, 85, and 86. The temperature acquisition module includes a temperature acquisition terminal 82 on the circuit board.

[0027] Furthermore, the housing 10 is provided with a corresponding fuse interface 40 , a thermocouple probe opening 60 , and a humidity collection module corresponding opening 50 .

[0028] In the embodiment of the present application, the four ends of the four power interfaces 81, 83, 85, and 86 in the power module are electrically connected to the circuit board, and the other four ends are provided with four probes 91 for contacting and connecting to the power supply bus trough, and the probes 91 have the functions of measuring temperature and conducting electricity.

[0029] The probe 91 is a thermocouple with a metal shell and has three wires (not shown), one of which is used for conducting electricity and the other two are thermocouple information wires. The other end of the thermocouple information wire is connected to the temperature acquisition terminal 82 on the circuit board 20.

[0030] The function of the power module is to provide operating energy for the entire device. In the embodiment of the present application, the AD-DC power supply circuit of the power module is not only designed for the isolated power supply of the three-phase power metering chip, but also for the power supply circuit of the remaining low-voltage working circuits. The power module is electrically connected to the carrier communication module, the three-phase power metering chip module, the temperature acquisition module, the humidity acquisition module and the MCU main control module.

[0031] The function of the MCU main control module is an important module that controls the entire device code flow, including communication and data storage with the three-phase power metering chip, communication and data reception with the carrier communication module, communication and data reception with the temperature acquisition module, and communication and data reception with the humidity acquisition module. The MCU main control module is electrically connected to the power module, carrier communication module, three-phase power metering chip module, temperature acquisition module, and humidity acquisition module.

[0032] The carrier communication module is a module for transmitting the detected bus duct A, B, C, N four-wire temperature, bus duct humidity data, and voltage data. The MCU sends the parameter information to be transmitted to the carrier communication module through serial communication, and then the carrier communication module sends the information carrier through the thermocouple probe 91. If the carrier communication module receives remote upgrade information, it processes the remote upgrade information and sends it to the MCU main control module through serial communication, and the MCU main control module completes the subsequent upgrade operation. The carrier communication module is electrically connected to the power module and the MCU main control module.

[0033] The three-phase electric energy metering chip module is a key module for detecting and measuring the phase voltage of each phase A, B, and C of the bus duct, as well as the line voltage between each phase. The high-voltage AC is electrically connected to the three-phase electric energy metering chip circuit after passing through the thermocouple probe 91 and the voltage divider circuit (not shown) on the circuit board. The three-phase electric energy metering chip module circuit analyzes the acquired voltage, and after analog gain control and precision level control through the voltage channel, the parameters are saved in the corresponding register. The MCU main control module is then electrically connected to the three-phase electric energy metering chip module through the SPI communication mode. The MCU reads the electric energy parameters in the corresponding register, and the electrical data of the bus duct can be obtained after data calculation and processing. The three-phase electric energy metering chip module is electrically connected to the power module and the MCU main control module.

[0034] The temperature acquisition module is electrically connected to the thermocouple information line of the thermocouple probe, and after calculation and processing, it is electrically connected to the MCU main control module in SPI communication mode. Then the MCU main control module processes the received data to obtain the temperature information of the four busbar lines A, B, C, and N. The temperature acquisition module is electrically connected to the power module and the MCU main control module.

[0035] The humidity acquisition module is arranged under the device housing. After calculation and processing, it is electrically connected to the MCU main control module in the IIC communication mode. Then the MCU main control module processes the received data to obtain the humidity information inside the bus duct. The humidity acquisition module is electrically connected to the power module and the MCU main control module.

[0036] In the embodiment of the present application, the shell 10 includes an upper shell 10a and a lower shell 10b. A fixing screw thread 70 is arranged on the front of the lower shell 10b to facilitate fixing the upper shell 10b and the lower shell 10b together by screws (not shown). The upper shell 10a and the lower shell 10b can both be made of plastic by injection molding.

[0037] In the embodiment of the present application, the thermocouple probe opening 60 and the corresponding opening 50 of the humidity collection module are arranged at the bottom of the lower shell 10b. This arrangement makes the bus duct detection device 1 based on the three-phase electric energy metering chip simple and reasonable in structure and easy to operate.

[0038] In the embodiment of the present application, the bus duct detection device 1 based on the three-phase electric energy metering chip has a carrier communication function, and can transfer the collected information to a gateway host (not shown) through the bus duct.

[0039] Furthermore, after successful communication, the monitored parameters include: phase A temperature (℃), phase B temperature (℃), phase C temperature (℃), phase N temperature (℃), humidity (%), phase A line voltage (V), phase B line voltage (V), phase C line voltage (V), phase A phase voltage (V), phase B phase voltage (V), and phase C phase voltage (V).

[0040] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A bus duct detection device based on a three-phase electric energy metering chip, characterized in that: Used to detect the temperature, humidity and voltage of a dense bus duct and perform communication operations, including a housing and a circuit board arranged in the housing, wherein the circuit board is electrically connected with a carrier communication module, a three-phase electric energy metering chip module, a temperature acquisition module, a humidity acquisition module, an MCU main control module and a power supply module; The power supply module is electrically connected to the carrier communication module, the three-phase electric energy metering chip module, the temperature acquisition module, the humidity acquisition module and the MCU main control module; The carrier communication module is electrically connected to the power module and the MCU main control module; The three-phase electric energy metering chip module is electrically connected to the power module and the MCU main control module; The temperature acquisition module is electrically connected to the power module and the MCU main control module; The humidity collection module is electrically connected to the power module and the MCU main control module; The MCU main control module is electrically connected to the power supply module, the carrier communication module, the three-phase electric energy metering chip module, the temperature acquisition module and the humidity acquisition module; Four ends of the four power interfaces in the power module are electrically connected to the circuit board, and the other four ends are provided with four thermocouple probes for contacting and connecting the power supply bus duct, and the probes have the functions of measuring temperature and conducting electricity; The three-phase electric energy metering chip module can collect the voltage data of the bus in real time, including the phase voltages of phases A, B, and C, and the line voltages between phases, and supports software calibration function with high measurement accuracy. Three ends of the three fuse interfaces on the shell are connected to the circuit board, and the other three ends are electrically connected to the circuit board after passing through fuses fixed on the shell.

2. A bus duct detection device based on a three-phase electric energy metering chip as claimed in claim 1, characterized in that: The bus duct detection device has a carrier communication mode, and can collect electrical data of the three lines A, B, and C of the bus duct and temperature data of the four lines A, B, C, and N of the bus duct, as well as the overall humidity data of the device according to the temperature acquisition module, the humidity acquisition module, and the three-phase electric energy metering chip module, evaluate the working status of the equipment, and send the alarm data and the collected data through carrier communication. It also has a remote upgrade function, which is convenient for the update and iteration of the code after the equipment is installed in the future.

3. A bus duct detection device based on a three-phase electric energy metering chip as claimed in claim 1, characterized in that: The housing comprises an upper housing and a lower housing, and the upper housing and the lower housing are fixed together by screws.

4. A bus duct detection device based on a three-phase electric energy metering chip as claimed in claim 3, characterized in that: The fuse opening is arranged on the front surface of the upper housing, and the thermocouple probe opening and the humidity sensor opening are arranged on the bottom of the lower housing.

5. A bus duct detection device based on a three-phase electric energy metering chip as claimed in claim 4, characterized in that: The front of the upper shell is provided with an indication mark corresponding to the fuse, and the bottom of the lower shell is provided with an indication mark corresponding to the thermocouple probe and the humidity sensor.

6. A bus duct detection device based on a three-phase electric energy metering chip according to claim 1, characterized in that: The three-phase electric energy metering chip module supports software calibration function, has high measurement accuracy, can collect electrical data of the bus in real time, and can simultaneously monitor the phase voltages of phases A, B, and C, as well as the line voltage between phases, to ensure power safety and improve operation and maintenance efficiency.

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