Switch cabinet temperature detection method and system based on multiple sensors and directions

Abstract

The invention discloses a switch cabinet temperature detection method and system based on multiple sensors and orientations. Temperature rise data of a switch cabinet are collected through a thermocouple type temperature rise tester; if the temperature rise is abnormal, abnormal information is sent to the control terminal, and the control terminal analyzes the abnormal information, carries out abnormal marking on the switch cabinet and sends a control signal to the inspection equipment; the inspection equipment drives the visible light temperature measurement sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and detects the temperature of the abnormal switch cabinet from different directions; multiple groups of temperatures of the abnormal switch cabinet are converted into temperature rise, the temperature rise and the temperature rise data in the first step form a data set, and an average temperature rise value is obtained after the abnormal temperature rise in the data set is eliminated; obtaining and displaying the temperature value of the abnormal switch cabinet according to the average temperature rise value and the environment temperature; according to the invention, the temperature of the switch cabinet is measured through multiple types of sensors in different directions, and the problem of large detection error caused by factors such as single sensor, distance, shielding and the like is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation safety, and in particular to a switch cabinet temperature detection method and system based on multiple sensors and positions. Background Art

[0002] In the power system, switchgear is a key component of power equipment and a prerequisite for ensuring the normal operation of power. As voltage levels continue to rise and power supply increases rapidly, the working intensity of switchgear is also increasing. Abnormalities in switchgear can endanger the safety of the power grid and even cause the grid to paralyze.

[0003] At present, the more mature methods mainly include optical fiber temperature measurement, infrared temperature measurement, surface acoustic wave temperature measurement, thermocouple method and electronic temperature measurement. However, most of these methods are single sensor temperature measurement methods, which are difficult to fully and accurately identify switch cabinet overheating faults. At the same time, the structure of the high-voltage switch cabinet cable room is complex. Due to factors such as distance and obstruction, relying on the above single sensor and fixed azimuth measurement makes the measurement accuracy even lower. Therefore, multiple sensors and multiple angles are needed to collect temperature data of the switch cabinet to improve accuracy. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a switch cabinet temperature detection method and system based on multiple sensors and orientations. Through the comprehensive use of multiple types of sensors and multiple measurement orientations, the problem in the prior art that a single sensor and a fixed orientation have large measurement errors and are difficult to fully and accurately identify switch cabinet overheating faults is solved.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a switch cabinet temperature detection method based on multiple sensors and orientations, the steps of which are: Step 1: Collect the temperature rise data of the switch cabinet through a thermocouple temperature rise tester; Step 2: Determine whether the temperature rise is abnormal, otherwise return to step 1, if yes, send abnormal information to the control terminal, the control terminal analyzes the abnormal information, marks the switch cabinet as abnormal and sends a control signal to the inspection device; Step 3: The inspection equipment drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and detects the temperature of the abnormal switch cabinet from different directions; Step 4: convert multiple groups of temperatures of abnormal switch cabinets into temperature rises, and form a data set with the temperature rise data of step 1, and calculate the average temperature rise value after excluding the abnormal temperature rise in the data set; Step 5: Obtain the temperature value of the abnormal switch cabinet based on the average temperature rise value and the ambient temperature and display it. The personnel determine whether to cancel the abnormal mark of the switch cabinet based on the temperature value of the switch cabinet.

[0006] Furthermore, in step 2, whether the temperature rise is abnormal is determined by comparing the temperature rise data obtained by the thermocouple temperature rise tester with a set threshold. If the temperature rise data is greater than the set threshold, it is abnormal; if the temperature rise data is less than or equal to the set threshold, it is not abnormal.

[0007] Furthermore, in the step 2, the process of sending the abnormal information to the control terminal and parsing it is as follows: the temperature rise data, ambient temperature and thermocouple temperature rise tester number are packaged and sent to the control terminal in real time via a wireless network; after the control terminal receives the abnormal information and decodes it, it obtains the temperature rise data, ambient temperature and thermocouple temperature rise tester number, determines the name and location of the abnormal switch cabinet according to the thermocouple temperature rise tester number, and marks the temperature rise data and ambient temperature.

[0008] Furthermore, in step three, the temperature of the switch cabinet is acquired from at least three directions, and each direction includes the temperature of the switch cabinet detected by the visible light temperature sensor and the temperature of the switch cabinet detected by the infrared temperature sensor.

[0009] Furthermore, in step 4, the method of converting multiple groups of temperatures into temperature rise is: subtracting the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor from the marked ambient temperature in turn to obtain the corresponding temperature rise.

[0010] Furthermore, in step 4, the average temperature rise value is obtained by removing the minimum value and the maximum value and then calculating the average.

[0011] Furthermore, in step five, the average temperature rise value is added to the marked ambient temperature to obtain the corresponding temperature.

[0012] Furthermore, in step five, if the abnormal mark of the switch cabinet is cancelled, the process returns to step one and the inspection device returns to the initial position. If the abnormal mark of the switch cabinet is not cancelled, the inspection device enters the real-time monitoring state. Within the set time, if the temperature value of the switch cabinet exceeds the alarm threshold, an alarm is triggered. If it does not exceed the alarm threshold, the abnormal mark of the switch cabinet is cancelled.

[0013] In order to solve the above technical problems, another technical solution adopted by the present invention is to provide a switch cabinet temperature detection system based on multiple sensors and orientations, which is characterized by comprising a temperature detection module, a wireless communication module, a control module and a display module, wherein: Temperature detection module: used to obtain the temperature value of the environment where the switch cabinet is located, the temperature value and temperature rise of the switch cabinet, and transmit the temperature value, temperature rise and abnormal information to the control module through the wireless communication module; Wireless communication module: realizes communication between temperature detection module and control module; Control module: Analyze abnormal information, mark the switch cabinet as abnormal and send control signals to the temperature detection module, convert multiple temperature groups of abnormal switch cabinets into temperature rise, form a data set with temperature rise data, and obtain the average temperature rise value after excluding abnormal temperature rise in the data set; obtain the temperature value of the abnormal switch cabinet according to the average temperature rise value and ambient temperature and display it, and personnel determine whether to cancel the abnormal mark of the switch cabinet according to the temperature value of the switch cabinet; send a control signal to the temperature detection module according to whether the abnormal mark is canceled, and the temperature detection module enters the real-time monitoring state. If the temperature value of the switch cabinet exceeds the alarm threshold within the set time, an alarm will be issued, and if it does not exceed the alarm threshold, the abnormal mark of the switch cabinet will be cancelled; Display module: displays the temperature value of the switch cabinet.

[0014] Further, the temperature detection module includes a fixed detection module and a mobile detection module, wherein: Fixed detection module: compares the temperature rise data obtained by the thermocouple temperature rise tester with the set threshold. If the temperature rise data is greater than the set threshold, the temperature rise data, ambient temperature and the number of the thermocouple temperature rise tester are packaged and sent to the control module in real time through the wireless network; Mobile detection module: The inspection equipment is controlled by the control module. The inspection equipment drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and obtains the temperature of the switch cabinet from at least three directions. Each direction includes the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor, and sends the detected temperature value to the control module.

[0015] The beneficial effects of the present invention are: 1. The present invention measures the temperature of the switch cabinet by using multiple types of sensors at different positions, and uses a temperature value closest to the switch cabinet as a start signal to start other sensors for detection, thereby reducing energy consumption and solving the problem of large detection errors caused by a single sensor and factors such as distance and occlusion through multi-directional detection.

[0016] 2. The infrared temperature sensor and the visible light temperature measuring sensor in the present invention are movable, and can monitor, analyze and judge the temperature change in real time through the miniature dual-view infrared monitoring device of the infrared temperature sensor and the visible light temperature measuring sensor, and give an alarm in time to remind the operation and maintenance personnel to deal with it in time, thereby ensuring the safe operation of the equipment; and it can also move automatically to realize the temperature detection of other switch equipment.

[0017] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites preferred embodiments and describes them in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a flowchart of the application method; Figure 2 It is a structural block diagram of the system of this application. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0022] See also Figure 1 , Figure 1 The present invention shows a switch cabinet temperature detection method based on multiple sensors and orientations, the steps of which are: Step S1, collecting temperature rise data of the switch cabinet by using a thermocouple temperature rise tester; Step S2, determine whether the temperature rise is abnormal, otherwise return to step S1, if yes, send abnormal information to the control terminal, the control terminal analyzes the abnormal information, marks the switch cabinet as abnormal and sends a control signal to the inspection device; Step S3: The inspection device drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and detects the temperature of the abnormal switch cabinet from different directions; Step S4, converting the multiple groups of temperatures of the abnormal switch cabinet into temperature rises, and forming a data set with the temperature rise data of step S1, and calculating the average temperature rise value after excluding the abnormal temperature rise in the data set; Step S5: The temperature value of the abnormal switch cabinet is obtained according to the average temperature rise value and the ambient temperature and displayed. The personnel determines whether to cancel the abnormal mark of the switch cabinet according to the temperature value of the switch cabinet.

[0023] In step S2, whether the temperature rise is abnormal is determined by comparing the temperature rise data obtained by the thermocouple temperature rise tester with a set threshold. If the temperature rise data is greater than the set threshold, it is abnormal; if the temperature rise data is less than or equal to the set threshold, it is not abnormal.

[0024] Among them, the process of sending abnormal information to the control terminal and parsing it is: packing the temperature rise data, ambient temperature and thermocouple temperature rise tester number, and sending them to the control terminal in real time through the wireless network; after the control terminal receives the abnormal information and decodes it, it obtains the temperature rise data, ambient temperature and thermocouple temperature rise tester number, and determines the name and location of the abnormal switch cabinet according to the thermocouple temperature rise tester number, and marks the temperature rise data and ambient temperature.

[0025] In step S3, the temperature of the switch cabinet is acquired from at least three directions, and each direction includes the temperature of the switch cabinet detected by the visible light temperature sensor and the temperature of the switch cabinet detected by the infrared temperature sensor.

[0026] The inspection device can be an inspection cart. The inspection device is just an actuator. The visible light (CDD) temperature sensor and the infrared temperature sensor are set on the inspection cart. The inspection device moves the visible light temperature sensor and the infrared temperature sensor to the switch cabinet according to the location information of the switch cabinet. Different detection directions can be manually set by personnel in the background.

[0027] In step S4, the multiple groups of temperatures are converted into temperature rises by subtracting the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor from the marked ambient temperature in turn to obtain the corresponding temperature rise.

[0028] In step S4, the average temperature rise value is obtained by removing the minimum value and the maximum value and then calculating the average value.

[0029] In step S5, the average temperature rise value is added to the marked ambient temperature to obtain the corresponding temperature.

[0030] Among them, if the abnormal mark of the switch cabinet is cancelled, the process returns to step S1, and the inspection device returns to the initial position. If the abnormal mark of the switch cabinet is not cancelled, the inspection device enters the real-time monitoring state. Within the set time, if the temperature value of the switch cabinet exceeds the alarm threshold, an alarm is issued. If it does not exceed the alarm threshold, the abnormal mark of the switch cabinet is cancelled.

[0031] See also Figure 2 , Figure 2 This application provides another technical solution adopted by the present invention to solve the above technical problems. The technical solution is: to provide a switch cabinet temperature detection system based on multiple sensors and orientations, which is characterized by: comprising a temperature detection module 21, a wireless communication module 22, a control module 23 and a display module 24, wherein: Temperature detection module 21: used to obtain the temperature value of the environment where the switch cabinet is located, the temperature value and temperature rise of the switch cabinet, and transmit the temperature value, temperature rise and abnormal information to the control module through the wireless communication module; Wireless communication module 22: realizes communication between the temperature detection module and the control module; Control module 23: Analyze the abnormal information, mark the switch cabinet as abnormal and send a control signal to the temperature detection module, convert multiple groups of temperatures of the abnormal switch cabinet into temperature rise, form a data set with temperature rise data, and obtain the average temperature rise value after excluding the abnormal temperature rise in the data set; obtain the temperature value of the abnormal switch cabinet according to the average temperature rise value and the ambient temperature and display it, and the personnel determine whether to cancel the abnormal mark of the switch cabinet according to the temperature value of the switch cabinet; send a control signal to the temperature detection module according to whether the abnormal mark is canceled, and the temperature detection module enters the real-time monitoring state. If the temperature value of the switch cabinet exceeds the alarm threshold within the set time, an alarm is issued, and if it does not exceed the alarm threshold, the abnormal mark of the switch cabinet is cancelled; Display module 24: displays the temperature value of the switch cabinet.

[0032] The temperature detection module 21 includes a fixed detection module 211 and a mobile detection module 212, wherein: Fixed detection module 211: compares the temperature rise data obtained by the thermocouple temperature rise tester with the set threshold value. If the temperature rise data is greater than the set threshold value, the temperature rise data, the ambient temperature and the number of the thermocouple temperature rise tester are packaged and sent to the control module in real time through the wireless network; Mobile detection module 212: The inspection device is controlled by the control module. The inspection device drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, obtains the temperature of the switch cabinet from at least three directions, and each direction includes the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor, and sends the detected temperature value to the control module.

[0033] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, this application will not go into details.

[0034] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A switch cabinet temperature detection method based on multiple sensors and positions, the steps are: Step 1: Collect the temperature rise data of the switch cabinet through a thermocouple temperature rise tester; Step 2: Determine whether the temperature rise is abnormal, otherwise return to step 1, if yes, send abnormal information to the control terminal, the control terminal analyzes the abnormal information, marks the switch cabinet as abnormal and sends a control signal to the inspection device; Step 3: The inspection equipment drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and detects the temperature of the abnormal switch cabinet from different directions; Step 4: convert multiple groups of temperatures of abnormal switch cabinets into temperature rises, and form a data set with the temperature rise data of step 1, and calculate the average temperature rise value after excluding the abnormal temperature rise in the data set; Step 5: Obtain the temperature value of the abnormal switch cabinet based on the average temperature rise value and the ambient temperature and display it. The personnel determine whether to cancel the abnormal mark of the switch cabinet based on the temperature value of the switch cabinet.

2. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In step 2, whether the temperature rise is abnormal is determined by comparing the temperature rise data obtained by the thermocouple temperature rise tester with a set threshold. If the temperature rise data is greater than the set threshold, it is abnormal; if the temperature rise data is less than or equal to the set threshold, it is not abnormal.

3. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In the step 2, the process of sending the abnormal information to the control terminal and parsing it is as follows: the temperature rise data, ambient temperature and thermocouple temperature rise tester number are packaged and sent to the control terminal in real time via a wireless network; after the control terminal receives the abnormal information and decodes it, it obtains the temperature rise data, ambient temperature and thermocouple temperature rise tester number, determines the name and location of the abnormal switch cabinet according to the thermocouple temperature rise tester number, and marks the temperature rise data and ambient temperature.

4. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In the step three, the temperature of the switch cabinet is acquired from at least three directions, and each direction includes the temperature of the switch cabinet detected by the visible light temperature sensor and the temperature of the switch cabinet detected by the infrared temperature sensor.

5. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In the step 4, the method of converting multiple groups of temperatures into temperature rise is: subtracting the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor from the marked ambient temperature in turn to obtain the corresponding temperature rise.

6. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In the step 4, the average temperature rise value is obtained by removing the minimum value and the maximum value and then calculating the average value.

7. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In step five, the average temperature rise value is added to the marked ambient temperature to obtain the corresponding temperature.

8. The switch cabinet temperature detection method based on multiple sensors and positions according to claim 1 is characterized in that: In step five, if the abnormal mark of the switch cabinet is cancelled, the process returns to step one and the inspection device returns to the initial position. If the abnormal mark of the switch cabinet is not cancelled, the inspection device enters the real-time monitoring state. Within the set time, if the temperature value of the switch cabinet exceeds the alarm threshold, an alarm is triggered. If it does not exceed the alarm threshold, the abnormal mark of the switch cabinet is cancelled.

9. A switch cabinet temperature detection system based on multiple sensors and positions, characterized by: It includes a temperature detection module, a wireless communication module, a control module and a display module, wherein: Temperature detection module: used to obtain the temperature value of the environment where the switch cabinet is located, the temperature value and temperature rise of the switch cabinet, and transmit the temperature value, temperature rise and abnormal information to the control module through the wireless communication module; Wireless communication module: realizes communication between temperature detection module and control module; Control module: Analyze abnormal information, mark the switch cabinet as abnormal and send control signals to the temperature detection module, convert multiple temperature groups of abnormal switch cabinets into temperature rise, form a data set with temperature rise data, and obtain the average temperature rise value after excluding abnormal temperature rise in the data set; obtain the temperature value of the abnormal switch cabinet according to the average temperature rise value and ambient temperature and display it, and personnel determine whether to cancel the abnormal mark of the switch cabinet according to the temperature value of the switch cabinet; send a control signal to the temperature detection module according to whether the abnormal mark is canceled, and the temperature detection module enters the real-time monitoring state. If the temperature value of the switch cabinet exceeds the alarm threshold within the set time, an alarm will be issued, and if it does not exceed the alarm threshold, the abnormal mark of the switch cabinet will be cancelled; Display module: displays the temperature value of the switch cabinet.

10. A switch cabinet temperature detection system based on multiple sensors and positions according to claim 9, characterized in that: The temperature detection module includes a fixed detection module and a mobile detection module, wherein: Fixed detection module: compares the temperature rise data obtained by the thermocouple temperature rise tester with the set threshold. If the temperature rise data is greater than the set threshold, the temperature rise data, ambient temperature and the number of the thermocouple temperature rise tester are packaged and sent to the control module in real time through the wireless network; Mobile detection module: The inspection equipment is controlled by the control module. The inspection equipment drives the visible light temperature sensor and the infrared temperature sensor to move to the vicinity of the abnormal switch cabinet, and obtains the temperature of the switch cabinet from at least three directions. Each direction includes the switch cabinet temperature detected by the visible light temperature sensor and the switch cabinet temperature detected by the infrared temperature sensor, and sends the detected temperature value to the control module.

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