Temperature measuring device of enclosed bus

Abstract

The utility model discloses a temperature measuring device for an enclosed bus, which comprises a directional antenna, a data concentrator, a transmission module and one or more RFID (Radio Frequency Identification)-based temperature sensors, and the temperature sensors are arranged on a metal flexible connector of the enclosed bus; the directional antenna is installed on the side wall of a closed mother cylinder of the closed bus. The temperature sensor is connected with the data concentrator through the directional antenna, the data concentrator is connected with the transmission module, and the transmission module is connected with the upper computer. The temperature of the metal soft connection part of the enclosed bus is acquired through the RFID-based temperature sensor, and the detected temperature is transmitted to the data concentrator through the directional antenna and is uploaded to the upper computer through the transmission module, so that the temperature measurement of the enclosed bus is realized; wireless passive detection can be realized through the temperature sensor based on the RIFD; detection data can be displayed online in real time through the background of the upper computer.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement technology, specifically to a temperature measuring device for an enclosed busbar. Background Technology

[0002] Enclosed busbars (also known as closed busbars) are busbar systems composed of a metal plate (steel or aluminum plate) as a protective shell, conductor bars, insulation materials, and related accessories. Enclosed busbars often experience a temperature rise before a safety hazard occurs, making temperature monitoring an extremely important indicator. Currently, most methods for temperature measurement of enclosed busbars include infrared thermography, fluorescent fiber optic thermography, and CT thermography.

[0003] Infrared thermometry is easily affected by environmental factors, such as ambient temperature, dust in the air, and vibration; it has a greater impact on temperature readings on shiny or polished metal surfaces; it is limited to measuring the external temperature of an object and is inconvenient for measuring the internal temperature of an object or the temperature when there are obstacles.

[0004] The harsh electromagnetic environment at the operating site and the complex power protection circuitry of the CT scanner result in poor reliability and stability of CT temperature measurement, a high failure rate, and a significant impact on the safe and reliable operation of primary equipment. Most systems use thermistor voltage division for AD conversion to acquire temperature; however, thermistors have low linearity, guaranteeing accuracy only within a very narrow temperature range, leading to high system costs and operational complexity. Continuous operation also results in high power consumption. Fiber optic temperature measurement cables require long-distance, space-interval temperature measurement, resulting in high fiber optic deployment costs and low efficiency.

[0005] Therefore, it is necessary to design a temperature measuring device for the enclosed busbar to measure the temperature of the enclosed busbar in real time. Utility Model Content

[0006] To address the aforementioned technical problems in the existing technology, this utility model provides a temperature measuring device for enclosed busbars, which measures the temperature of the enclosed busbars in real time.

[0007] This utility model discloses a temperature measuring device for an enclosed busbar, including a directional antenna, a data concentrator, a transmission module, and one or more RFID-based temperature sensors. The temperature sensors are installed on the metal flexible connection of the enclosed busbar; the directional antenna is installed on the side wall of the enclosed busbar cylinder; the temperature sensors are connected to the data concentrator through the directional antenna, the data concentrator is connected to the transmission module, and the transmission module is connected to a host computer.

[0008] Preferably, it also includes a display screen connected to the data concentrator.

[0009] Preferably, the directional antenna is connected with the data concentrator through a dedicated radio frequency line.

[0010] Preferably, one or more temperature sensors are arranged on the metal flexible connection of the enclosed busbar.

[0011] Preferably, the enclosed busbar comprises A phase, B phase and C phase,

[0012] Two temperature sensors are arranged on the metal flexible connection of the A phase, B phase and C phase, respectively.

[0013] Preferably, the data concentrator comprises a first data concentrator, a second data concentrator and a third data concentrator,

[0014] The input end of the first data concentrator is connected with the directional antenna installed on the A phase;

[0015] The input end of the third data concentrator is connected with the directional antenna installed on the C phase;

[0016] The input end of the second data concentrator is connected with the directional antenna installed on the B phase, the output end of the first data concentrator and the output end of the third data concentrator.

[0017] Preferably, the output end of the second data concentrator is connected with the transmission module.

[0018] Preferably, the transmission module comprises a LoRa module.

[0019] Preferably, a power module is further comprised, and the power module is electrically connected with the data concentrator and the transmission module, respectively.

[0020] Compared with the prior art, the enclosed busbar temperature measuring device has the following beneficial effects: the temperature of the metal flexible connection of the enclosed busbar is collected by the temperature sensor based on RFID, and the detected temperature is transmitted to the data concentrator through the directional antenna, and then uploaded to the upper computer through the transmission module, so that the temperature measurement of the enclosed busbar is realized; the temperature sensor based on RFID can realize wireless and passive detection; and the detection data can be displayed in real time and online through the background of the upper computer. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a logic block diagram of the enclosed busbar temperature measuring device;

[0022] Figure 2 is an installation schematic diagram of the temperature sensor;

[0023] Figure 3 is a distribution schematic diagram of the data concentrator.

[0024] Marked in the figure: 1 temperature sensor, 2 directional antenna,

[0025] 3 control assembly, 33 data concentrator, 34 display screen, 35 transmission module, 36 first data concentrator, 37 second data concentrator, 38 third data concentrator, 39 power module,

[0026] 6 host computer, 7 enclosed bus, 71 metal flexible connection, 72 enclosed bus barrel side wall. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] The utility model will be described in further detail in conjunction with the drawings as follows:

[0029] A temperature measuring device for an enclosed bus, such as Figures 1-3 , comprises a directional antenna 2, a data concentrator 33, a transmission module 35, and one or more RFID-based temperature sensors 1 installed on the metal flexible connection 71 (copper connection wire) of the enclosed bus 7; the directional antenna 2 is installed on the enclosed bus barrel side wall 72 of the enclosed bus; the temperature sensor 1 is connected to the data concentrator 33 through the directional antenna 2, the data concentrator 33 is connected to the transmission module 35, and the transmission module 35 is connected to the host computer 6.

[0030] The temperature of the metal flexible connection of the enclosed bus is collected by the RFID-based temperature sensor, and the detected temperature is transmitted to the data concentrator through the directional antenna, uploaded to the host computer through the transmission module, and the temperature measurement of the enclosed bus is realized; the RFID-based temperature sensor can realize wireless passive detection; the detection data can be displayed in real time online through the background of the host computer 6. The online temperature measurement of the enclosed bus is realized.

[0031] Figure 1 The control assembly 3 in the above also shows a display screen 34 connected to the data concentrator 33 for displaying detection data. The control assembly 3 and its display screen are installed near the enclosed bus 7, and the detection data can be viewed on site.

[0032] More specifically, the directional antenna 2 is connected to the data concentrator 33 through a dedicated radio frequency line. One or more temperature sensors are arranged on the metal flexible connection 71 of the enclosed bus 7.

[0033] AsFigure 1 In the first specific embodiment, the closed busbar 7 comprises A phase, B phase and C phase, and two temperature sensors can be arranged on the metal flexible connections of the A phase, B phase and C phase respectively to improve the detection accuracy. The A phase, B phase and C phase can share one data concentrator.

[0034] As Figure 3 In the second specific embodiment, the data concentrator 33 comprises a first data concentrator 36, a second data concentrator 37 and a third data concentrator 38. The input end of the first data concentrator 36 is connected with the directional antenna installed on the A phase. The input end of the third data concentrator 38 is connected with the directional antenna installed on the C phase. The input end of the second data concentrator 37 is connected with the directional antenna installed on the B phase, the output end of the first data concentrator 36 and the output end of the third data concentrator 38. The output end of the second data concentrator 37 is connected with the transmission module 35. The transmission module 35 can be a LoRa module, but is not limited thereto.

[0035] The control assembly 3 is installed in a control box near the closed busbar. The temperature sensor is an RFID passive wireless temperature sensor, which is installed at the metal flexible connection of the three-phase closed busbar cylinder. Two measuring points are arranged on each phase as required. The directional antenna is fixed on the side wall of the closed busbar cylinder by using the original hole of the closed busbar, and is connected to the data concentrator in the terminal control box through a radio frequency line. The sensor display screen in the control box realizes centralized display of temperature, and transmits temperature data to the engineer station / upper computer to realize real-time online monitoring.

[0036] The utility model also provides a power module 39, and the power module 39 is electrically connected with the data concentrator 33, the display screen 34 and the transmission module 35 respectively, is used for supplying power, specifically, can adopt switching power supply.

[0037] The technical parameters of each device are shown in Table 1. The temperature sensor integrates an RFID temperature measurement module and an antenna.

[0038] Table 1

[0039]

[0040]

[0041] The temperature sensor adopts a chip type nonmetallic anti-ceramic material, has a very high insulation level, does not affect the safe and stable operation of the primary equipment, adopts a passive wireless RFID technology, transmits signals by using 902-928MHz high frequency waves, has no any influence on the safe operation of the primary equipment, is really stable in performance, long in service life and maintenance-free, the directional antenna is wrapped by a high-temperature resistant plastic part, the antenna angle is adjustable, meanwhile, the gain of the antenna is increased, energy is more concentrated, directivity is better, and wireless reading distance is farther, and the temperature data can support real-time online monitoring of a background and checking of historical data and alarm information by using a mobile phone APP at any time.

[0042] The utility model mainly needs to overcome is temperature sensor insulation, directional antenna insulation, sealing and fixed problem. Directional antenna material selection must be high temperature resistant, high insulation, meanwhile, antenna support needs to have rotation function, therefore, many structural parts are tried, and many tests are verified, finally, test material selection is successful, can realize high insulation, high sealing, and signal transmission is stable.

[0043] The realization of the temperature measurement function of the present technique mainly relies on the radio frequency identification function of RFID, and the identity recognition and temperature signal transmission of the temperature sensor tag. The temperature sensor tag serves as the identity recognition. The function of the sensor tag mainly relies on the built-in passive wireless chip, which can obtain energy from electromagnetic wave signals in the air, and the built-in directional antenna is activated. After the chip is activated, the chip activates the antenna connected therewith, and the antenna radiates electromagnetic waves outward, the external directional antenna receives the signals and transmits them to the data concentrator, and the data concentrator transmits the signals to the upper computer / display screen through the transmission module.

[0044] In a specific test, an experimental simulation environment is built outdoors, the designed temperature sensor tag is encapsulated into an insulating sealing mother according to an actual scene (not powered), the directional antenna and the data concentrator are used to read the temperature parameters of the tag, and the parameters are transmitted to the background display in real time.

[0045] The above is only a preferred embodiment of the utility model, and is not used for limiting the utility model. For those skilled in the art, the utility model can be changed and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A temperature measuring device for an enclosed bus, characterized by, The directional antenna (2), the data concentrator (33), the transmission module (35), and one or more RFID-based temperature sensors (1), The temperature sensor (1) is installed on the metal flexible connection (71) of the enclosed busbar (7); the directional antenna (2) is installed on the enclosed busbar side wall (72) of the enclosed busbar; The temperature sensor (1) is connected with the data concentrator (33) through the directional antenna (2), the data concentrator (33) is connected with the transmission module (35), and the transmission module (35) is connected with the upper computer (6).

2. The temperature measuring device according to claim 1, characterized in that It also includes a display screen (34) connected with the data concentrator (33).

3. The temperature measuring device according to claim 1, wherein The directional antenna (2) is connected with the data concentrator (33) through a dedicated radio frequency line.

4. The temperature measuring device according to claim 1, wherein One or more temperature sensors are arranged on the metal flexible connection (71) of the enclosed busbar (7).

5. The temperature measuring device according to claim 4, characterized in that The enclosed busbar (7) includes A phase, B phase and C phase, Two temperature sensors are arranged on the metal flexible connection of the A phase, B phase and C phase, respectively.

6. The temperature measuring device according to claim 5, wherein The data concentrator (33) includes a first data concentrator (36), a second data concentrator (37) and a third data concentrator (38), The input end of the first data concentrator (36) is connected with the directional antenna installed on the A phase; The input end of the third data concentrator (38) is connected with the directional antenna installed on the C phase; The input end of the second data concentrator (37) is connected with the directional antenna installed on the B phase, the output end of the first data concentrator (36), and the output end of the third data concentrator (38).

7. The temperature measuring device according to claim 6, characterized in that The output end of the second data concentrator (37) is connected with the transmission module (35).

8. The temperature measuring device according to claim 1, wherein The transmission module (35) includes a LoRa module.

9. The temperature measuring device according to claim 1, wherein It also includes a power module (39) electrically connected with the data concentrator (33) and the transmission module (35), respectively.

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