CN221612270U - Rectifier cabinet diode temperature measurement system - Google Patents
Rectifier cabinet diode temperature measurement system Download PDFInfo
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- CN221612270U CN221612270U CN202323425911.2U CN202323425911U CN221612270U CN 221612270 U CN221612270 U CN 221612270U CN 202323425911 U CN202323425911 U CN 202323425911U CN 221612270 U CN221612270 U CN 221612270U
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Abstract
The utility model belongs to the technical field of rectifier cabinets, and relates to a diode temperature measurement system of a rectifier cabinet. The temperature measurement system comprises: the ultrahigh frequency temperature sensor, the antenna, the ultrahigh frequency reader-writer and the monitoring terminal are distributed in the rectifier cabinet; the ultrahigh frequency temperature sensor is arranged on the diode to be measured, and the ultrahigh frequency reader is used for transmitting electromagnetic waves and exchanging data with the ultrahigh frequency temperature sensor; the antenna is electrically connected with the ultrahigh frequency reader-writer and is used for transmitting the radio frequency signals sent by the ultrahigh frequency reader-writer and receiving the radio frequency signals returned by the ultrahigh frequency temperature sensor; the ultrahigh frequency reader-writer is electrically connected with the monitoring terminal. The temperature measuring system creatively provides a passive temperature measuring circuit system, and can realize real-time monitoring of temperature data of a diode to be measured; on the premise of not affecting the insulation and safety of the rectifier cabinet, the real-time temperature monitoring requirement of key nodes of the rectifier cabinet can be met; the method has the advantages of convenience in installation and debugging, low operation and maintenance cost and the like, and has wide application prospect.
Description
Technical Field
The utility model belongs to the technical field of rectifier cabinets, and relates to a diode temperature measurement system of a rectifier cabinet.
Background
In research and development, trial production and type test of the flexible PHM data terminal with the intelligent operation and maintenance functions of the rectifier cabinet, according to the suggestion and the requirement of a subway user, the design and the trial production of the technical scheme of the rectifier cabinet with the PHM function are required to be completed so as to complete the type selection work of various sensors, and the rectifier cabinet is required to keep the original functions and structures unchanged.
In the existing hardware architecture of the rectifier cabinet, the temperature of the diode is not required to be measured, only in the model requiring the type test, the thermal resistor or the thermocouple temperature measuring probe is temporarily embedded in the contact surface where the diode is attached to the radiator to measure, as the diode is not insulated from the radiator, the surface of the radiator is provided with high-voltage electricity, the biggest problem in the measurement mode is that the thermal resistor or the thermocouple measuring circuit is provided with high-voltage electricity, the measurement circuit and personal safety are seriously threatened, and particularly in the intelligent operation and maintenance process of the rectifier cabinet, when 36 paths of diode temperature acquisition are added on the basis of the existing hardware circuit of the rectifier cabinet, the problem is more prominent and serious, and the problem that the 36 paths of temperature measuring sensor is not insulated from a main circuit and provided with high-voltage electricity is urgently required to be solved.
In view of this, the present utility model has been made.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a rectifier cabinet diode temperature measurement system which is compatible in the structure of the existing rectifier cabinet, can be completely independent electrically and can avoid the mutual influence of the diodes.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
In one aspect, the present utility model provides a rectifier cabinet diode temperature measurement system, comprising: the ultrahigh frequency temperature sensor, the antenna, the ultrahigh frequency reader-writer and the monitoring terminal are distributed in the rectifier cabinet;
The ultrahigh frequency temperature sensor is arranged on a diode to be measured in temperature, and the ultrahigh frequency read-write device is used for transmitting electromagnetic waves and exchanging data with the ultrahigh frequency temperature sensor;
The antenna is electrically connected with the ultrahigh frequency reader-writer and is used for transmitting radio frequency signals sent by the ultrahigh frequency reader-writer and receiving radio frequency signals returned by the ultrahigh frequency temperature sensor;
The ultrahigh frequency reader-writer is electrically connected with the monitoring terminal.
Further, the ultrahigh frequency temperature sensor is a passive ultrahigh frequency ceramic temperature sensor.
Further, the antenna is an ultrahigh frequency antenna and is electrically connected with the ultrahigh frequency reader-writer through a radio frequency cable.
Further, the working frequency band of the ultra-high frequency antenna is 902 MHz-928 MHz.
Further, the ultra-high frequency temperature sensor is installed at the highest temperature range of the diode to be measured.
Further, the ultrahigh frequency temperature sensor is adhered to the highest temperature point of the diode with the temperature to be measured.
Further, the temperature measuring range of the diode temperature measuring system of the rectifying cabinet is-40 ℃ to +150 ℃.
Further, the temperature measurement precision of the rectifier cabinet diode temperature measurement system is +/-1 ℃.
On the other hand, the utility model also provides a temperature measuring method based on the rectifier cabinet diode temperature measuring system, which comprises the following steps:
Step 1, a monitoring terminal is utilized to send an instruction for collecting real-time temperature information of a diode to an ultrahigh frequency reader-writer, and the instruction is sent to an ultrahigh frequency temperature sensor through an antenna;
Step 2, after receiving corresponding instructions, the ultrahigh frequency temperature sensor collects real-time temperature information of all Wen Erji pipes to be detected, and feeds the collected real-time temperature information back to an ultrahigh frequency reader-writer through an antenna;
And step 3, the ultrahigh frequency reader-writer transmits the received real-time temperature information to a monitoring terminal to finish the measurement of the real-time temperature information of all Wen Erji pipes to be measured.
Further, the number of the ultrahigh frequency temperature sensors is the same as the number of the 36-path diodes.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
1) The temperature measuring system thoroughly solves the problems that a measuring circuit is provided with high voltage and the safety of a measuring circuit and personnel is seriously threatened in the measuring process of utilizing the embedded thermal resistor or the thermocouple temperature measuring probe;
2) The ultrahigh frequency temperature sensor and the ultrahigh frequency reader-writer exchange information through ultrahigh frequency radio frequency signals, passive temperature measurement is realized, cables and a working power supply are not needed, wiring workload can be greatly reduced, and cost is reduced;
3) The ultrahigh frequency temperature sensor can be directly contacted with a temperature measuring point, has the advantages of wide temperature measuring range, high precision, real-time effect, stability and reliability, and can withstand a high-temperature environment exceeding 220 ℃;
In conclusion, the temperature measuring system provided by the utility model creatively provides a passive temperature measuring circuit system, and can realize real-time monitoring of temperature data of a diode to be measured; on the premise of not affecting the insulation and safety of the rectifier cabinet, the real-time temperature monitoring requirement of key nodes of the rectifier cabinet can be met; the method has the advantages of convenience in installation and debugging, low operation and maintenance cost and the like, and has wide application prospect.
In addition, the ultrahigh frequency temperature sensor adopts the design of the passive ultrahigh frequency ceramic anti-metal temperature sensor, can meet the requirement of metal surface temperature measurement, has the advantages of safe use and maintenance-free, and can meet the application in the industrial field.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate principles of the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a block diagram of a rectifier cabinet diode temperature measurement system provided by the utility model;
FIG. 2 (a) is a schematic diagram showing the distribution of temperature measurement points of the anode region of a rear diode in a rectifier cabinet provided by the utility model;
Fig. 2 (b) is a schematic distribution diagram of temperature measuring points of an anode region of a diode in front of a rectifier cabinet provided by the utility model;
Fig. 3 is a schematic distribution diagram of temperature measuring points of front and rear rectifier bridges in a rectifier cabinet provided by the utility model.
Wherein: 1. an ultrahigh frequency temperature sensor; 2. an antenna; 3. an ultrahigh frequency reader; 4. a monitoring terminal; 5. and a rectifying cabinet.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of certain aspects of the utility model that are consistent with the details of the claims below.
The present utility model will be described in further detail below with reference to the drawings and examples for better understanding of the technical solutions of the present utility model to those skilled in the art.
Example 1
Referring to fig. 1, this embodiment provides a rectifier cabinet diode temperature measurement system, including: the ultrahigh frequency temperature sensor 1, the antenna 2, the ultrahigh frequency reader-writer 3 and the monitoring terminal 4 are distributed in the rectifier cabinet;
The ultrahigh frequency temperature sensor 1 is arranged on a diode to be measured in temperature, and the ultrahigh frequency reader 3 is used for transmitting electromagnetic waves and exchanging data with the ultrahigh frequency temperature sensor 1;
The antenna 2 is electrically connected with the ultrahigh frequency reader-writer 3 and is used for transmitting radio frequency signals sent by the ultrahigh frequency reader-writer 3 and receiving radio frequency signals returned by the ultrahigh frequency temperature sensor 1;
The ultrahigh frequency reader-writer 3 is electrically connected with the monitoring terminal 4.
Further, the antenna 2 is an ultrahigh frequency antenna, and is electrically connected with the ultrahigh frequency reader-writer 3 through a radio frequency cable. Here, the antenna 2 is used for transmitting a radio frequency signal sent by the reader and receiving a radio frequency signal returned by the ultrahigh frequency temperature sensor tag. The ultra-high frequency antenna also has a plurality of types, different gains and different sizes, and can be matched according to actual requirements.
Further, the working frequency band of the ultra-high frequency antenna is 902 MHz-928 MHz.
Further, the ultra-high frequency temperature sensor 1 is installed at the highest temperature range of the diode to be measured.
Further, the ultrahigh frequency temperature sensor 1 is adhered to the highest temperature point of the diode with the temperature to be measured.
Preferably, the ultrahigh frequency temperature sensor 1 is a passive ultrahigh frequency ceramic anti-metal temperature sensor, and the ultrahigh frequency reader-writer 3 is used for information acquisition and transmitting to a monitoring terminal 4 (PHM terminal) for control and display. The passive ultrahigh frequency ceramic metal-resistant temperature sensor adopts a passive wireless transmission technology, integrates an ultralow power consumption temperature sensor in an internal chip, and is used as a temperature measuring device. The ultrahigh frequency temperature sensor 1 is based on special base material and antenna design, can well work in most application scenes including metal surfaces, can meet the application of wide industrial fields, has the temperature resistance of tolerating the environmental temperature exceeding 220 ℃, and can realize the real-time temperature monitoring requirement of key nodes of the rectifier cabinet on the premise of not influencing the insulation and safety of the rectifier cabinet completely.
The ultrahigh frequency temperature sensor 1 may be a sensor of different types according to the different types of the object to be measured.
Specifically, the layout of the passive ultrahigh frequency ceramic anti-metal temperature sensor is as follows: all 36 thermocouples for collecting the temperature of the diode are arranged in the anode region of the diode, mainly because the temperature of the anode region of the semiconductor device is higher than that of the cathode region, and only the temperature information of the 36 thermocouples in the anode region is collected, as shown in fig. 2-3: fig. 2 (a) and fig. 2 (b) show a first diode highest temperature point selected by the diode anode region, namely a first temperature measurement point layout, fig. 3 shows a second diode highest temperature point selected by the front and rear rectifier bridge diodes, namely a second temperature measurement point layout, 36 paths of diode temperature acquisition points are added on the basis of the existing rectifier cabinet hardware circuit, and the acquisition requirements of the intelligent operation and maintenance function and the monitoring terminal 4 (flexible PHM data terminal) on all diode temperatures are realized.
Preferably, the ultrahigh frequency temperature sensor 1 is a passive ultrahigh frequency ceramic anti-metal temperature sensor, the temperature measurement range can reach-40 ℃ to +150 ℃, the resolution is 0.1 ℃, the temperature measurement precision is +/-1 ℃, the ID is independent, and the protection grade is IP65.
Specifically, the uhf reader 3 is a main body of the whole information collection, emits electromagnetic waves, activates the uhf temperature sensor to operate, and interacts data with the uhf temperature sensor. The ultrahigh frequency reader-writer also has various forms, and the proper ultrahigh frequency reader-writer can be selected according to actual requirements.
Preferably, the ultrahigh frequency reader-writer 3 selects a fixed multi-port ultrahigh frequency reader-writer, the working frequency band of which is 902 MHz-928 MHz, and the reading distance is (EIRP=4W): 6 meters; the antenna 2 is an ultrahigh frequency antenna, and the gain value is 6dB.
In summary, through the system, the temperature of the 36 paths of diodes can be monitored in real time and processed; the temperature measuring device has the characteristics of wide temperature measuring range, high precision, long reading distance, small size and convenient installation, is particularly suitable for temperature measuring application in the environment of the rectifier cabinet, performs online temperature real-time monitoring, and thoroughly solves the problems that the existing measuring line is provided with high voltage electricity and seriously threatens the measuring circuit and personal safety when the embedded thermal resistor or thermocouple temperature measuring probe is used for measuring.
Example 2
Aiming at the problem that the existing rectifier cabinet is used for upgrading intelligent operation and maintenance functions, a test machine type is adopted, and because a thermal resistor or a thermocouple temperature measuring probe is embedded on the surface of the diode, which is attached to a radiator, the measuring circuit is provided with high-voltage electricity, and the measuring circuit and personal safety are seriously threatened. In order to solve the technical problems, on the basis of embodiment 1, the embodiment also provides a temperature measuring method for the diode of the rectifier cabinet, which ensures that the diode is electrically insulated, is passive and wireless, is convenient to install and test, is compatible with the existing rectifier cabinet in structure, is completely independent in electricity, and can avoid mutual influence.
The temperature measurement method specifically comprises the following steps:
Step 1, a monitoring terminal 4 is utilized to send an instruction for collecting real-time temperature information of a diode to an ultrahigh frequency reader-writer 3, and the instruction is sent to an ultrahigh frequency temperature sensor 1 through an antenna 2;
Step 2, after receiving corresponding instructions, the ultrahigh frequency temperature sensor 1 collects real-time temperature information of all Wen Erji pipes to be detected, and feeds the collected real-time temperature information back to the ultrahigh frequency reader-writer 3 through the antenna 2;
And step 3, the ultrahigh frequency reader-writer 3 transmits the received real-time temperature information to a monitoring terminal to finish the measurement of the real-time temperature information of all Wen Erji pipes to be measured.
Preferably, the number of the uhf temperature sensors 1 is the same as the number of the 36-way diodes.
In summary, the temperature measuring method utilizes the ultra-high frequency ceramic temperature sensor with small volume, proper shape and high sensitivity to be directly adhered to the highest temperature point of the diode, and is placed in the radiator, and the real-time temperature of all points to be measured can be measured through the antenna 2 and the ultra-high frequency reader-writer 3 which are arranged in the rectifier cabinet, so that the temperature measuring method is convenient, safe, sensitive and reliable. By reasonably selecting the temperature measuring points, the 36 paths of diode temperature acquisition points are added on the premise of not changing the hardware structure of the rectifier cabinet completely, so that the real-time temperature monitoring requirement of key nodes of the rectifier equipment is realized, and the rectifier cabinet has the advantages of convenience in installation and debugging, low operation and maintenance cost and the like.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.
It will be understood that the utility model is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (9)
1. A rectifier cabinet diode temperature measurement system, comprising: the ultrahigh frequency temperature sensor (1), the antenna (2), the ultrahigh frequency reader-writer (3) and the monitoring terminal (4) are distributed in the rectifier cabinet;
The ultrahigh frequency temperature sensor (1) is arranged on a diode to be measured in temperature, and the ultrahigh frequency reader (3) is used for transmitting electromagnetic waves and interacting data with the ultrahigh frequency temperature sensor (1);
the antenna (2) is electrically connected with the ultrahigh frequency reader-writer (3) and is used for transmitting radio frequency signals sent by the ultrahigh frequency reader-writer (3) and receiving radio frequency signals returned by the ultrahigh frequency temperature sensor (1);
the ultrahigh frequency reader (3) is electrically connected with the monitoring terminal (4).
2. The rectifier cabinet diode temperature measurement system according to claim 1, characterized in that the ultra-high frequency temperature sensor (1) is a passive ultra-high frequency ceramic temperature sensor.
3. The rectifier cabinet diode temperature measurement system according to claim 1, wherein the antenna (2) is an ultra-high frequency antenna and is electrically connected with the ultra-high frequency reader (3) through a radio frequency cable.
4. The rectifier cabinet diode temperature measurement system of claim 3, wherein the ultra-high frequency antenna has an operating frequency band of 902MHz to 928MHz.
5. Rectifier tank diode temperature measurement system according to claim 1, characterized in that the ultra-high frequency temperature sensor (1) is mounted at the highest temperature range of the diode to be measured.
6. The rectifier cabinet diode temperature measurement system according to claim 5, wherein the ultra-high frequency temperature sensor (1) is bonded at the highest temperature point of the diode to be measured.
7. The rectifier cabinet diode temperature measurement system of claim 1, wherein the temperature measurement range of the rectifier cabinet diode temperature measurement system is-40 ℃ to +150 ℃.
8. The rectifier cabinet diode temperature measurement system of claim 7, wherein the temperature measurement accuracy of the rectifier cabinet diode temperature measurement system is ± 1 ℃.
9. The rectifier cabinet diode temperature measurement system according to claim 1, characterized in that the number of the ultra-high frequency temperature sensors (1) is the same as the number of the 36-way diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323425911.2U CN221612270U (en) | 2023-12-15 | 2023-12-15 | Rectifier cabinet diode temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323425911.2U CN221612270U (en) | 2023-12-15 | 2023-12-15 | Rectifier cabinet diode temperature measurement system |
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| Publication Number | Publication Date |
|---|---|
| CN221612270U true CN221612270U (en) | 2024-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323425911.2U Active CN221612270U (en) | 2023-12-15 | 2023-12-15 | Rectifier cabinet diode temperature measurement system |
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| CN (1) | CN221612270U (en) |
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2023
- 2023-12-15 CN CN202323425911.2U patent/CN221612270U/en active Active
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