CN216246906U - Passive wireless RFID chip power distribution cabinet contact temperature measurement system - Google Patents

Abstract

The utility model provides a passive wireless RFID chip power distribution cabinet contact temperature measurement system, which belongs to the field of electrical equipment manufacturing. The utility model includes a cabinet body, a plurality of passive temperature measurement labels, a plurality of data collection antennas and temperature data. collector; high-voltage contacts are arranged in the cabinet, and a plurality of the passive temperature measurement labels are installed on the high-voltage contacts; the data acquisition antenna and the temperature data collector are both fixed in the cabinet, and many Each of the data acquisition antennas is electrically connected to the temperature data collector; each of the passive temperature measurement tags corresponds to one of the data acquisition antennas, and is wirelessly connected to the data acquisition antenna; The passive temperature measurement label is provided with a passive RFID temperature measurement chip. The utility model adopts the passive wireless RFID chip to directly detect the temperature of the high-voltage contacts in the power distribution cabinet, and transmits the results to the temperature data collector through the data acquisition antenna, so that the temperature on the contacts can be directly acquired at high frequency. It can adapt to various temperature environments and achieve the same service life as the power distribution cabinet.

Description

Passive wireless RFID chip power distribution cabinet contact temperature measurement system

technical field

The utility model relates to a power distribution cabinet manufacturing technology, in particular to a passive wireless RFID chip power distribution cabinet contact temperature measurement system, which belongs to the technical field of electrical equipment manufacturing.

Background technique

Power distribution cabinets are commonly used and important power equipment, and maintaining the normal and stable operation of power distribution cabinets plays a vital role in safe production. The main maintenance part of the power distribution cabinet is the contact part. If the contact is loose, elastic aging, contact surface is not clean and other abnormal conditions, it will cause abnormal changes in the contact temperature. The electrical cabinet operates normally and stably.

There are two methods for monitoring the temperature of contacts in the prior art: one is to coat a layer of luminescent material whose color changes with temperature on the surface of the high-voltage electrical contact, and roughly determine the temperature change range by observing the color change, but this method is accurate. The temperature is low and reliability is poor, and accurate quantitative measurement cannot be carried out; another method is to use the radiation characteristics of the contact temperature change to use an infrared thermal imager to detect the contact temperature, which has high accuracy, but due to the need to use additional Temperature detection instruments are inconvenient to use in the specific scenario of high and low voltage power distribution cabinets, and infrared thermal imaging cameras are expensive and expensive to use.

More importantly, the above two methods require manual inspection, and cannot obtain temperature data in real time. They can only be found when an abnormality has occurred. It is impossible to judge whether there is a thermal fault in the cabinet at the first time. , the temperature real-time alarm function cannot be achieved. Another important problem to achieve real-time temperature detection is that the electronic instruments with wired communication do not conform to the specifications of electric high-voltage environment measuring instruments, that is, when a temperature detection device is installed in the power distribution cabinet, the wired mode cannot be used to transmit temperature data.

Utility model content

The utility model provides a new passive wireless RFID chip power distribution cabinet contact temperature measurement system, which directly measures the temperature of the heating components of the power distribution cabinet and transmits data by using the passive RFID chip, so as to solve the problem in the prior art. The technical problem of inconvenient temperature measurement in the power distribution cabinet.

The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to the embodiment of the present invention includes: a cabinet body, a plurality of passive temperature measurement labels, a plurality of data acquisition antennas and a temperature data collector; A high-voltage contact is provided, and a plurality of the passive temperature measurement labels are mounted on the high-voltage contact;

The data acquisition antenna and the temperature data acquisition device are both fixed in the cabinet, and a plurality of the data acquisition antennas are all electrically connected to the temperature data acquisition device;

Each of the passive temperature measurement tags corresponds to one of the data acquisition antennas, and is wirelessly connected to the data acquisition antenna;

A passive RFID temperature measurement chip is arranged in the passive temperature measurement label.

The above-mentioned passive wireless RFID chip power distribution cabinet contact temperature measurement system, wherein the cabinet body includes: a high-voltage cabinet and a low-voltage cabinet; the high-voltage contacts are arranged in the high-voltage cabinet; the high-voltage cabinet is connected to the high-voltage cabinet. There are ventilation windows between the low-voltage cabinets;

The data acquisition antenna is installed in the low-voltage cabinet, and corresponds to the high-voltage contact through the ventilation window.

In the above-mentioned passive wireless RFID chip power distribution cabinet contact temperature measurement system, the system further includes: a server; the server is connected to the temperature data collector.

The above-mentioned passive wireless RFID chip power distribution cabinet contact temperature measurement system, wherein the passive temperature measurement label is further provided with an RFID antenna, and the RFID antenna is electrically connected to the passive RFID temperature measurement chip;

The passive temperature measurement tag is wirelessly connected to the data acquisition antenna through the RFID antenna.

The above-mentioned passive wireless RFID chip power distribution cabinet contact temperature measurement system, wherein the data acquisition antenna includes a radio frequency transceiver circuit, an MCU and a remote communication interface circuit, and the radio frequency transceiver circuit and the remote communication interface circuit are both connected with the MCU. connect;

The radio frequency transceiver circuit is connected with the RFID antenna, and the remote communication interface circuit is connected with the temperature data collector.

The above-mentioned passive wireless RFID chip power distribution cabinet contact temperature measurement system, wherein, the temperature data collector is provided with one or more of an RS485 data bus interface, an RJ45 network cable interface, a GPRS communication device and a GSM communication circuit. variety.

The utility model adopts the passive wireless RFID chip to directly detect the temperature of the high-voltage contacts in the power distribution cabinet, and transmits the results to the temperature data collector through the data acquisition antenna, so that the temperature on the contacts can be directly acquired at high frequency. It can adapt to various temperature environments and achieve the same service life as the power distribution cabinet.

Description of drawings

1 is a schematic structural diagram of a passive wireless RFID chip power distribution cabinet contact temperature measurement system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a passive wireless RFID chip power distribution cabinet contact temperature measurement system according to an embodiment of the present invention.

Detailed ways

The passive wireless RFID chip power distribution cabinet contact temperature measurement system of the present invention can be made of the following materials, and is not limited to the following materials, such as: data interface, power distribution cabinet, passive RFID chip, reader, data Transceiver antenna, etc.

FIG. 1 is a schematic structural diagram of a passive wireless RFID chip power distribution cabinet contact temperature measurement system according to an embodiment of the present invention; and refer to FIG. 2 .

The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to the embodiment of the present utility model

The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to the embodiment of the present invention includes: a cabinet body, a plurality of passive temperature measurement labels 1, a plurality of data acquisition antennas 2 and a temperature data collector 3; A high-voltage contact 10 is arranged in the cabinet, and a plurality of the passive temperature measurement labels 1 are installed on the high-voltage contact 10; The health of the power distribution cabinet.

The data collection antenna 2 and the temperature data collector 3 are both fixed in the cabinet, and a plurality of the data collection antennas 2 are electrically connected to the temperature data collector 3;

Each of the passive temperature measurement tags 1 corresponds to one of the data collection antennas 2, and is wirelessly connected to the data collection antenna 2; the passive temperature measurement tags 1 are provided with passive RFID sensors. warm chip.

In general, the cabinet body includes: a high-voltage cabinet 11 and a low-voltage cabinet 12; the high-voltage contacts 10 are arranged in the high-voltage cabinet 11; there is a ventilation window between the high-voltage cabinet 11 and the low-voltage cabinet 12, In order to facilitate wireless connection between the data acquisition antenna 2 and the passive temperature measurement tag 1 .

The data acquisition antenna 2 is installed in the low-voltage cabinet, and corresponds to the high-voltage contact 10 through the ventilation window.

The working principle of online temperature measurement of passive RFID temperature measurement chip is: if the passive RFID temperature measurement chip installed on the contact of the power distribution cabinet receives the special radio frequency signal sent by the reader (data acquisition antenna 2), it can rely on the induced current. The obtained energy starts to measure the temperature of the heat source, and sends out the product information and temperature measurement information stored in the chip. After the reader (data acquisition antenna 2) reads and decodes the information, it is sent to the temperature data collector 3 for related data processing. , display, record.

The system in this embodiment is generally composed of a reader, an electronic temperature measurement tag, an antenna, a host, and the like. In the specific application process of the RFID system, the composition of the system will be different according to different application purposes and application environments.

As shown in FIG. 2 , the passive wireless RFID chip power distribution cabinet contact temperature measurement system in this embodiment further includes: a server 4 ; the server 4 is connected to the temperature data collector 3 .

The server 4 can acquire the data collected on the multiple temperature data collectors 3, so that centralized data processing, temperature warning and real-time monitoring can be performed on the PC side.

In the passive wireless RFID chip power distribution cabinet contact temperature measurement system of this embodiment, the passive temperature measurement tag 1 is further provided with an RFID antenna, and the RFID antenna is electrically connected to the passive RFID temperature measurement chip;

The passive temperature measurement tag is wirelessly connected to the data acquisition antenna 2 through the RFID antenna.

Further, the data acquisition antenna 2 includes a radio frequency transceiver circuit, an MCU and a long-distance communication interface circuit, and the radio frequency transceiver circuit and the long-distance communication interface circuit are both connected to the MCU;

The radio frequency transceiver circuit is connected with the RFID antenna, and the remote communication interface circuit is connected with the temperature data collector 3 .

In the passive wireless RFID chip power distribution cabinet contact temperature measurement system of this embodiment, the temperature data collector 3 is provided with one of an RS485 data bus interface, an RJ45 network cable interface, a GPRS communication device and a GSM communication circuit or more, so that the data can be aggregated to the server 4 in real time.

The utility model adopts the passive wireless RFID chip to directly detect the temperature of the high-voltage contacts in the power distribution cabinet, and transmits the results to the temperature data collector through the data acquisition antenna, so that the temperature on the contacts can be directly acquired at high frequency. It can adapt to various temperature environments and achieve the same service life as the power distribution cabinet.

The advantages of the utility model:

1. Good high and low temperature resistance: professional design, production process of TSMC headquarters in Taiwan, China; temperature measurement up to 150°C, temperature resistance up to 220°C (when not working);

2. The passive RFID temperature measurement chip will not crash: the passive RFID temperature measurement chip uses a high temperature resistant chip as a single component, with high reliability, and the chip is activated wirelessly, and there will be no crash.

3. Long service life and maintenance-free: when the collector does not issue commands, the passive RFID temperature measurement chip does not work, and no daily maintenance is required, and it can have the same life as the electrical equipment being measured.

4. Applicable to various outdoor environments: The temperature measurement chip is fully enclosed, suitable for various outdoor climatic environments, using homogeneous media, and the protection level can reach IP68.

5. Hot spot installation and temperature measurement are more accurate: The passive RFID temperature measurement chip body is made of ceramics, which is insulated and safe, small in size, and can be installed in hot spots. The minimum volume is 13mm*9mm*5mm. The temperature measurement accuracy is high, the temperature measurement range of the front temperature sensor device is -40°C to 150°C, and the accuracy is +/-1°C.

6. High frequency of temperature measurement collection: the fastest temperature can be measured in batches every 100ms.

7. The temperature can be measured on both AC and DC equipment: the sensor and the background are equipotential, the work is not affected by the installation background potential, and there is no situation where the DC line CT cannot take electricity.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments. From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of some modifications and necessary general technology superposition; of course, it can also be implemented by simplifying some important technical features. Based on this understanding, the technical solutions of the present invention are essentially or contribute to the prior art as follows: the overall function and structure, and cooperate with the structures described in the various embodiments of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (6)

1. A passive wireless RFID chip power distribution cabinet contact temperature measurement system, characterized in that, comprising: a cabinet body, a plurality of passive temperature measurement labels, a plurality of data acquisition antennas and a temperature data collector; in the cabinet A high-voltage contact is provided, and a plurality of the passive temperature measurement labels are mounted on the high-voltage contact; The data acquisition antenna and the temperature data acquisition device are both fixed in the cabinet, and a plurality of the data acquisition antennas are all electrically connected to the temperature data acquisition device; Each of the passive temperature measurement tags corresponds to one of the data acquisition antennas, and is wirelessly connected to the data acquisition antenna; A passive RFID temperature measurement chip is arranged in the passive temperature measurement label. 2 . The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to claim 1 , wherein the cabinet body comprises: a high-voltage cabinet and a low-voltage cabinet; and the high-voltage contacts are arranged in the high-voltage cabinet. 3 . inside; there is a ventilation window between the high-voltage cabinet and the low-voltage cabinet; The data acquisition antenna is installed in the low-voltage cabinet, and corresponds to the high-voltage contact through the ventilation window. 3 . The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to claim 2 , wherein the system further comprises: a server; the server is connected to the temperature data collector. 4 . 4. The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to claim 1, wherein the passive temperature measurement label is further provided with an RFID antenna, and the RFID antenna is connected to the passive RFID antenna. Temperature measurement chip electrical connection; The passive temperature measurement tag is wirelessly connected to the data acquisition antenna through the RFID antenna. 5. The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to claim 4, wherein the data acquisition antenna comprises a radio frequency transceiver circuit, an MCU and a remote communication interface circuit, and the radio frequency transceiver circuit and The remote communication interface circuits are all connected with the MCU; The radio frequency transceiver circuit is connected with the RFID antenna, and the remote communication interface circuit is connected with the temperature data collector. 6. The passive wireless RFID chip power distribution cabinet contact temperature measurement system according to any one of claims 1-3, wherein the temperature data collector is provided with RS485 data bus interface, RJ45 network cable interface, GPRS One or more of a communication device and a GSM communication circuit.

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