Equipment on-line monitoring system based on electromagnetic induction self power supply

Abstract

The invention relates to the field of electromagnetic on-line monitoring, in particular to an equipment on-line monitoring system based on electromagnetic induction self-power supply, which comprises an electromagnetic monitoring module used for carrying out a monitoring request on electromagnetic equipment, and the monitoring request comprises information of a monitoring range, a monitoring starting point, a monitoring route and a monitoring terminal point; the mobile control module is used for controlling the mobile monitoring device to carry out mobile monitoring according to the monitoring route and collecting information of the detection range, the monitoring starting point and the monitoring terminal point of the electromagnetic equipment so as to form a first signal; and the information receiving module is used for receiving the first signal acquired by the mobile monitoring device. The sensor is fixed to a nearby position of a node needing temperature measurement through the alloy belt, it is guaranteed that the temperature sensing part of the sensor makes full contact with the surface of a detected part so as to guarantee the temperature measurement effect, and it is strictly guaranteed that the electrical gap after the sensor is installed is not lower than the lowest safety gap of the corresponding voltage grade.

Description

Technical Field

[0001] The present invention belongs to the technical field of electromagnetic on-line monitoring, and specifically relates to an on-line monitoring system for equipment based on electromagnetic induction self-power supply. Background Art

[0002] At present, on-line monitoring of equipment status has become a hot topic of current research. Most design schemes analyze sensor data by installing sensors on the equipment. Usually, wireless sensors need to be equipped with batteries as the energy source for sending signals. However, the size of the battery itself is very small, resulting in the inability to send a large amount of data and a short service life of the battery. The sensor based on electromagnetic induction self-power supply eliminates the battery and obtains energy from the magnetic field and converts it into its own electric energy, which not only achieves maintenance-free sensors but also avoids workers from performing maintenance operations in dangerous places such as high-voltage switchgear, thus avoiding the occurrence of dangerous accidents. Therefore, the present invention designs an on-line monitoring system for equipment based on electromagnetic induction self-power supply. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: An on-line monitoring system for equipment based on electromagnetic induction self-power supply according to the present invention includes:

[0005] An electromagnetic monitoring module for making a monitoring request for an electromagnetic device, where the monitoring request includes information such as a monitoring range, a monitoring starting point, a monitoring route, and a monitoring ending point;

[0006] A mobile control module for controlling a mobile monitoring device to perform mobile monitoring according to the monitoring route, collecting information on the detection range, monitoring starting point, and monitoring ending point of the electromagnetic device, and then forming a first signal;

[0007] An information receiving module for receiving the first signal collected by the mobile monitoring device;

[0008] An information processing module for processing the first signal, where the information processing includes analyzing and identifying electromagnetic signals, as well as temperature measurement nodes and direction finding and positioning of sensors;

[0009] An information positioning module for positioning at the corresponding geographical location on the monitoring map according to the information processing result of the information processing module;

[0010] A CT power taking module for installing the sensor in a high-voltage switchgear and using the CT power taking module to provide power for it;

[0011] The electromagnetic monitoring module includes a parameter control unit and an electromagnetic signal monitoring unit. The parameter control unit is used to control the working parameters of the monitoring module according to the working instructions. The working parameters of the monitoring module include receiving frequency, frequency step, and time interval.

[0012] The electromagnetic signal monitoring unit is composed of sensor nodes for monitoring electromagnetic signals in each frequency band. The monitoring nodes divide the monitoring area into several areas by clustering, and each area serves as a clustering point. The monitoring area then transmits the monitored electromagnetic signals to its cluster head node for area aggregation.

[0013] The sensor temperature measurement node fixes the sensor near the node to be temperature measured through an alloy strip, and ensures that the temperature sensing part of the sensor is in full contact with the surface of the detected part to ensure temperature measurement.

[0014] Preferably, the mobile control module includes a matching unit. The matching unit is used to match the corresponding mobile monitoring device according to the monitoring request and send the monitoring route to the mobile monitoring device.

[0015] Preferably, the information processing module includes a data acquisition unit, a signal processing unit, and a data analysis unit. The data acquisition unit is used to collect data from the electromagnetic monitoring module. This data includes the temperature, sag, and micro-vibration information of the transmission line.

[0016] The signal processing unit is used to collect the data collected by the data acquisition unit. The currently collected data includes filtering, rectification, and voltage conversion.

[0017] Preferably, the data analysis unit is used to analyze and process the data signals collected by the signal processing unit. The results are used for real-time monitoring and early warning, and the health data situation and data waveforms of the transmission line can be displayed in real time through the web page.

[0018] Preferably, the information positioning module includes an electromagnetic signal positioning unit and a positioning and direction finding unit. The electromagnetic signal positioning unit is used to convert the analog signal of the electromagnetic monitoring module into a digital signal, and read the start time and end time of signal acquisition, as well as the geographical location coordinates, and integrate and encode them into a set signal format.

[0019] Preferably, the positioning and direction finding unit is used to specify a reference starting point, call and process the stored signal data of the same electromagnetic signal radiation source collected by the electromagnetic monitoring devices at different positions of the sensor, calculate the time difference of arrival of the electromagnetic signals of the same electromagnetic signal radiation source at different geographical locations, and complete the direction finding and positioning of the signal by using the time difference direction finding method in combination with the signal coordinates of each mobile monitoring device.

[0020] Preferably, the CT power taking module includes a rectifying and filtering circuit, a DC / DC module circuit, an overvoltage protection circuit, a power failure detection circuit, and a backup battery circuit; the sensor transmits the signal to the background diagnosis system, and if the temperature exceeds the threshold value, an alarm is issued; after the fault is processed, the system returns to normal; the current of the medium and high voltage line passes through the current sensor and the surge protection circuit and then enters the signal conversion circuit, the CT power taking circuit, and the rectifying and filtering circuit respectively. The output end of the rectifying and filtering circuit is connected to the DC / DC module circuit, the overvoltage protection circuit, and the power failure detection circuit. The output end of the DC / DC module circuit outputs 3.3V, 5V, and 12V DC voltages, and the output end of the power failure detection circuit controls whether the backup battery circuit outputs voltage to the entire system.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. For the on-line monitoring system of equipment based on electromagnetic induction self-power supply described in the present invention, the sensor is fixed at a position near the temperature measurement node through an alloy strip, and it is ensured that the temperature sensing part of the sensor is in full contact with the surface of the detected part to ensure the temperature measurement effect. It is strictly ensured that the electrical clearance after the sensor is installed is not lower than the minimum safety clearance of the corresponding voltage level.

[0023] 2. For the on-line monitoring system of equipment based on electromagnetic induction self-power supply described in the present invention, the sensor is called through the positioning and direction finding unit, and then the electromagnetic signal radiation sources at different positions are used for signal storage and data processing. Multiple electromagnetic signal radiation sources can utilize the time difference of different geographical locations and combine the signal coordinates of each mobile monitoring device to complete the signal direction finding and positioning processing effect by using the time difference direction finding method. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic block diagram of the CT power taking circuit principle of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to make the technical means, creative features, achieved purposes, and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0027] As Figure 1 shown, the on-line monitoring system of equipment based on electromagnetic induction self-power supply described in the embodiment of the present invention includes:

[0028] An electromagnetic monitoring module, which is used to send a monitoring request for an electromagnetic device, and the monitoring request includes monitoring range, monitoring starting point, monitoring route, and monitoring end point information;

[0029] The mobile control module is used to control the mobile monitoring device to perform mobile monitoring according to the monitoring route, collect the detection range, monitoring starting point, and monitoring end point information of the electromagnetic device, and then form a first signal.

[0030] The information receiving module is used to receive the first signal collected by the mobile monitoring device.

[0031] The information processing module is used to process the information of the first signal, and the information processing includes electromagnetic signal analysis and identification and direction finding and positioning.

[0032] The information positioning module is used to perform positioning at the corresponding geographical location on the monitoring map according to the information processing result of the information processing module.

[0033] The CT power supply module is used to install the sensor in the high-voltage power distribution cabinet and use the CT power supply module to provide power for it.

[0034] The temperature measurement node of the sensor is fixed to the nearest position of the node to be measured through an alloy strip, and it is ensured that the temperature sensing part of the sensor is in full contact with the surface of the detected part to ensure temperature measurement.

[0035] As Figure 1 shown, the electromagnetic monitoring module includes a parameter control unit and an electromagnetic signal monitoring unit. The parameter control unit is used to control the working parameters of the monitoring module according to the working instruction, and the working parameters of the monitoring module include receiving frequency, frequency step, and time interval.

[0036] The electromagnetic signal monitoring unit is composed of sensor nodes that monitor electromagnetic signals in each frequency band. The monitoring nodes divide the monitoring area into several areas by clustering, and each area is used as a clustering point; the monitoring area then transmits the monitored electromagnetic signals to its cluster head node for area aggregation.

[0037] The mobile control module includes a matching unit, and the matching unit is used to match the corresponding mobile monitoring device according to the monitoring request and send the monitoring route to the mobile monitoring device.

[0038] The information processing module includes a data acquisition unit, a signal processing unit, and a data analysis unit. The data acquisition unit is used to collect data from the electromagnetic monitoring module, and the data includes the temperature, sag, and breeze vibration information of the transmission line.

[0039] The signal processing unit is used to collect the data collected by the data acquisition unit. The currently collected data includes filtering, rectification, and voltage conversion to ensure the accuracy and availability of the data.

[0040] The data analysis unit is used to analyze and process the data signals collected by the signal processing unit. The results are used for real-time monitoring and early warning, and the health data and data waveforms of the transmission line can be displayed in real time through the web page, enabling the monitoring personnel to timely understand the status of the power grid line.

[0041] The information positioning module includes an electromagnetic signal positioning unit and a positioning and direction-finding unit. The electromagnetic signal positioning unit is used to convert the analog signal of the electromagnetic monitoring module into a digital signal, and read the start time and end time of signal acquisition, as well as the geographical location coordinates, and integrate and encode them into a set signal format.

[0042] The positioning and direction-finding unit is used to specify a reference starting point, call and process the stored signal data of the same electromagnetic signal radiation source collected by the electromagnetic monitoring devices at different positions of the sensor, calculate the time difference of the electromagnetic signals of the same electromagnetic signal radiation source reaching different geographical locations, and complete the direction-finding and positioning of the signal by using the time-difference direction-finding method in combination with the signal coordinates of each mobile monitoring device.

[0043] The CT power supply module includes a rectifier and filter circuit, a DC / DC module circuit, an overvoltage protection circuit, a power-off detection circuit, and a backup battery circuit; the sensor transmits the signal to the background diagnosis system, and if the temperature exceeds the threshold value, an alarm is given; after the fault is processed, the system returns to normal; the current of the medium and high-voltage line passes through the current sensor and the surge protection circuit and then enters the signal conversion circuit, the CT power supply circuit, and the rectifier and filter circuit respectively. The output end of the rectifier and filter circuit is connected to the DC / DC module circuit, the overvoltage protection circuit, and the power-off detection circuit. The output end of the DC / DC module circuit outputs 3.3V, 5V, and 12V DC voltages, and the output end of the power-off detection circuit controls whether the backup battery circuit outputs voltage to the entire system.

[0044] Working principle: The positioning and direction-finding unit is used to call the sensor, thereby storing the signals of electromagnetic signal radiation sources at different positions and processing the data. Multiple electromagnetic signal radiation sources can utilize the time difference of different geographical locations and combine the signal coordinates of each mobile monitoring device to complete the effect of signal direction-finding and positioning processing by using the time-difference direction-finding method.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An on-line monitoring system for equipment based on electromagnetic induction self-power supply, characterized in that: Including: An electromagnetic monitoring module for sending a monitoring request to an electromagnetic device, the monitoring request including monitoring range, monitoring start point, monitoring route, and monitoring end point information; A mobile control module for controlling a mobile monitoring device to perform mobile monitoring along the monitoring route, collecting the detection range, monitoring start point, and monitoring end point information of the electromagnetic device, and then forming a first signal; An information receiving module for receiving the first signal collected by the mobile monitoring device; An information processing module for processing the information of the first signal, the information processing including analyzing and identifying electromagnetic signals, as well as temperature measurement nodes and direction finding and positioning of sensors; An information positioning module for positioning at the corresponding geographical location on the monitoring map according to the information processing result of the information processing module; A CT power supply module for installing a sensor in a high-voltage power distribution cabinet and using the CT power supply module to provide power for it; The electromagnetic monitoring module includes a parameter control unit and an electromagnetic signal monitoring unit. The parameter control unit is used to control the working parameters of the monitoring module according to a working instruction, and the working parameters of the monitoring module include receiving frequency, frequency step, and time interval; The electromagnetic signal monitoring unit is composed of sensor nodes for monitoring electromagnetic signals in each frequency band. The monitoring nodes divide the monitoring area into several areas by clustering, and each area serves as a clustering point; the monitoring area then transmits the monitored electromagnetic signals to its cluster head node for area aggregation; The sensor temperature measurement node fixes the sensor near the node to be temperature measured through an alloy strip, and ensures that the temperature sensing part of the sensor is in full contact with the surface of the detected part to ensure temperature measurement. The closely attached sensors can maintain the minimum safety gap.

2. The on-line monitoring system for equipment based on electromagnetic induction self-power supply according to claim 1, characterized in that: The mobile control module includes a matching unit for matching a corresponding mobile monitoring device according to the monitoring request and sending the monitoring route to the mobile monitoring device.

3. The on-line monitoring system for equipment based on electromagnetic induction self-power supply according to claim 2, characterized in that: The information processing module includes a data collection unit, a signal processing unit, and a data analysis unit. The data collection unit is used to collect data from the electromagnetic monitoring module, and the data includes the temperature, sag, and micro-vibration information of the transmission line; The signal processing unit is used to collect the data collected by the data collection unit, and the currently collected data includes filtering, rectification, and voltage conversion.

4. An on-line monitoring system for a device based on electromagnetic induction self-power supply according to claim 3, characterized in that: The data analysis unit is used to analyze and process the data signals collected by the signal processing unit, and the results are used for real-time monitoring and early warning, and the health data situation and data waveforms of the transmission line can be displayed in real time through a web page.

5. The on-line monitoring system for an electromagnetic induction self-powered device according to claim 4, characterized in that: The information positioning module includes an electromagnetic signal positioning unit and a positioning and direction finding unit. The electromagnetic signal positioning unit is used to convert the analog signal of the electromagnetic monitoring module into a digital signal, read the start time and end time of signal collection, and geographical location coordinates, and integrate and encode them into a set signal format.

6. An on-line monitoring system for a device based on electromagnetic induction self-power supply according to claim 5, characterized in that: The positioning and direction-finding unit is used to specify a reference starting point, process the stored signal data of the same electromagnetic signal radiation source collected by the electromagnetic monitoring devices at different positions of the sensor, calculate the time difference of the electromagnetic signal of the same electromagnetic signal radiation source reaching different geographical locations, and complete the direction-finding and positioning of the signal by using the time-difference direction-finding method in combination with the signal coordinates of each mobile monitoring device.

7. An on-line monitoring system for a device based on electromagnetic induction self-power supply according to claim 6, characterized in that: The CT power-taking module includes a rectifier filter circuit, a DC / DC module circuit, an overvoltage protection circuit, a power-off detection circuit, and a backup battery circuit; the sensor transmits the signal to the background diagnosis system, and if the temperature exceeds the threshold value, an alarm is given; after the fault is processed, the system returns to normal; the current of the medium- and high-voltage line passes through the current sensor and the surge protection circuit and then enters the signal conversion circuit, the CT power-taking circuit, and the rectifier filter circuit respectively. The output end of the rectifier filter circuit is connected to the DC / DC module circuit, the overvoltage protection circuit, and the power-off detection circuit. The output end of the DC / DC module circuit outputs DC voltages of 3.3V, 5V, and 12V. The output end of the power-off detection circuit controls whether the backup battery circuit outputs voltage to the entire system.

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