Self-energized mine cage shoe abrasion loss detection device and self-energized mine cage shoe abrasion loss detection method

Abstract

The invention discloses a self-energized mine cage shoe abrasion loss detection device and method, and belongs to the field of abrasion detection. Comprising an array type flexible circuit board flat cable unit, an array type voltage detection circuit, an energy collection device, a control system and a detection terminal. According to the device, a flexible circuit board is adopted as a detection unit, and dynamic real-time monitoring of the abrasion degree of the roller cage shoe is achieved by detecting the wire breakage condition of a wire arrangement unit of the array type flexible circuit board. Each flexible circuit board unit is connected to a voltage detection circuit and obtains abrasion data of the roller cage shoe in real time through a control system. An energy collection device is designed, rotation energy of the roller is converted into electric energy, and the electric energy can be supplied to the detection device after being processed by an energy management circuit. The device is easy to install, convenient to operate, free of maintenance, high in environmental adaptability and capable of achieving accurate and reliable detection of the abrasion loss of the roller cage shoe.

Description

Technical Field

[0001] The invention relates to the field of wear detection, and in particular to a self-powered mine tank ear wear detection device and method. Background Art

[0002] In the process of underground strategic mineral resource development, the mine hoisting system is currently the only tool for transporting deep (burial depth>1000m) solid mineral resources, and is known as the "throat" of the mine. The roller ear, which is composed of rollers, brackets, spring buffer devices, bases, etc., serves as a guide mechanism for the up and down movement of the lifting container. It bears lateral loads and plays a role in buffering and shock absorption, effectively avoiding the hard impact of the lifting container and the tank channel, thereby extending the service life of the tank channel and the lifting container. However, under the long-term contact between the roller and the tank channel, the roller is prone to wear. When the wear exceeds the specified wear value, it will affect the normal operation of the lifting container and even cause accidents such as can jamming. Therefore, it is urgent to monitor the wear of the roller ear in real time to ensure the safe operation of the lifting system.

[0003] The existing detection methods for the wear of roller tank ears mainly include two categories: one is manual periodic inspection, which relies on the workers' experience and judgment, has low accuracy and real-time performance, and is time-consuming and labor-intensive; the other is image detection method, which first acquires the image of the roller tank ear by arranging cameras, and then processes the image to obtain the estimated value of the wear of the roller tank ear. However, the underground environment is harsh, and the camera is easily affected by factors such as dust and light, making it difficult to obtain high-quality images.

[0004] Flexible circuit board is a printed circuit with high reliability and excellent flexibility made of polyester film or polyimide as the substrate. It has excellent characteristics such as light weight, thin thickness, and free bending and folding in three-dimensional space. From the technical characteristics, it has the potential to be used in the detection of the wear of roller tank ears. However, due to the mobility of the roller tank ears, it is difficult to supply power through wired means. To this end, the present invention proposes a self-powered mine roller tank ear wear detection device and method. The device and method use a flexible circuit board to accurately detect the wear of the roller tank ears, and supply energy through a piezoelectric vibration energy collection device. It has the advantages of low cost, strong environmental adaptability, high detection accuracy, and no maintenance. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised by the above-mentioned background technology and to propose a self-powered mine tank ear wear detection device and method; the present invention adopts a flexible circuit board for wear detection and supplies energy through a piezoelectric vibration energy collection device, which has the advantages of low cost, strong environmental adaptability, high detection accuracy, and no maintenance required.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a self-powered mine tank ear wear detection device, comprising an array type flexible circuit board wiring unit, an array type voltage detection circuit, an energy collection device, a control system and a detection terminal; the array type flexible circuit board wiring unit is evenly arranged along the outer diameter of the roller of the roller tank ear (assuming that the roller is divided into n sector areas, then one sector area corresponds to one flexible circuit board wiring unit and a voltage detection circuit), and is sequentially pasted from the outer diameter to the inner diameter; each of the flexible circuit board wiring units includes a plurality of arc-shaped wirings concentric with the roller, all of which are connected in parallel and arranged at non-equal intervals; each of the wirings is respectively connected to a chip resistor, and each flexible circuit board wiring unit is respectively provided with a first output end and a second output end connected to the voltage detection circuit;

[0008] Each flexible circuit board wiring unit adopts 0.1mm wiring for wiring. According to the actual radius value of the roller, the diameter of the outermost arc-shaped wiring is set to 250mm, and then the wiring is arranged in a non-equidistant array from large to small (d1>d2>...>dn, dn is the distance between the nth wiring and the adjacent wiring);

[0009] The voltage detection circuit comprises a detection circuit power supply, a voltage dividing resistor and a detection circuit board; one end of the detection circuit power supply is connected to the first output end of the flexible circuit board wiring unit, and the other end is connected to the voltage dividing resistor and then connected to the second output end of the flexible circuit board wiring unit to form a voltage detection circuit; the voltage detection power supply and the voltage dividing resistor are both arranged in the detection circuit board;

[0010] The energy collection device includes a piezoelectric sheet, a magnet mass block, an excitation magnet, and an energy management circuit; the excitation magnet is arranged on a roller bracket, one end of the piezoelectric sheet is fixed to the roller flange in a cantilever beam fixing manner, and the magnet mass block is fixed to the free end of the piezoelectric sheet; when the lifting container starts to run, the roller contacts the tank channel and continuously rotates, and at this time, the piezoelectric sheet fixed on the roller flange also rotates periodically, so that the magnet mass block at the free end of the piezoelectric sheet is magnetically excited by the excitation magnet fixed on the roller bracket every time it rotates one circle, and under the periodic magnetic excitation, the piezoelectric sheet is deformed and generates a power generation voltage, thereby realizing energy collection;

[0011] The energy management circuit adopts the LTC3331 chip and has a built-in full-bridge rectifier, which can store the AC power generated by the piezoelectric film in a charging capacitor after rectification, filtering and voltage stabilization; when the collected energy is high voltage, it is stepped down and supplies energy to each load, and the excess energy is stored in the battery; when the collected energy is low voltage, it automatically switches to the lithium battery to supply energy to the load.

[0012] The control system comprises a control module and a data transmission module, wherein the signal input end of the control module is respectively connected to the signal end of the array voltage detection circuit unit, and the signal output end of the control module is connected to the wireless transmission module through the output circuit;

[0013] The detection terminal includes a data receiving module, a host computer and a display device. The host computer receives the data transmitted by the data transmission module through the data receiving module, and the data is displayed by the display device.

[0014] The control module is an MSP430 low-power single-chip microcomputer; it includes a serial communication circuit and a data transmission module; the serial communication circuit is used to realize the collection of voltage of an external array voltage detection circuit unit; the data transmission module is used to realize the real-time transmission of voltage detection data.

[0015] In a second aspect, the present invention provides a self-powered mine roller ear wear detection method, comprising the following steps:

[0016] 1. The principle of the detection method is: when a certain sector-shaped area of ​​the roller is worn, the cables in the multi-flexible circuit board cable unit will break from the outside to the inside in sequence, and when the cables are broken, the voltage value detected by the voltage detection circuit unit corresponding to the flexible circuit board cable unit will become smaller. Since the spacing between the cables is known, the voltage value at both ends of the voltage divider resistor can be obtained in real time through the control system, and the number of broken cables in the flexible circuit board cable unit can be obtained, so as to obtain the wear amount of the corresponding sector-shaped area of ​​the roller; then it is sent out through the data transmission module, obtained by the data receiving module, and then transmitted to the host computer; finally, the host computer compares the changes in data and uses the relationship between the voltage change at both ends of the voltage divider resistor and the wear amount to obtain the wear amount of the corresponding sector-shaped area of ​​the roller. It should be noted that the roller ear wear detection method can not only accurately detect the wear amount of the roller, but also realize the positioning of the wear area;

[0017] 2. The wear of the roller is divided into three levels according to the degree of danger (serious, general, and slight), which are high, medium, and low respectively; the sampling frequency of the array voltage detection circuit can be adaptively changed with the change of the wear degree, the running speed, and the failure rate (three stages of acceleration of the lifting container - high failure rate, uniform speed - medium failure rate, and deceleration - low failure rate): when the wear of a certain area is at a low level or the lifting container is in the deceleration stage, the sampling frequency is set to low-frequency sampling; when it is at a medium level or a uniform speed stage, the sampling frequency is set to medium-frequency sampling; when it is at a high level or an acceleration stage, the sampling frequency is set to high-frequency sampling;

[0018] 3. The lifting container starts to operate and each detection device performs self-inspection;

[0019] 4. The energy harvesting device starts working and performs the following steps:

[0020] 1) When the roller and the tank are in contact and continuously rotate, the piezoelectric sheet fixed on the roller flange also rotates periodically, so that the magnetic mass block at the free end of the piezoelectric sheet is periodically magnetically excited by the excitation magnet fixed on the roller bracket, and the piezoelectric sheet is deformed and generates an AC voltage, thereby realizing energy collection;

[0021] 2) The energy management circuit performs the following steps:

[0022] ① The AC power generated by the piezoelectric sheet is rectified, filtered and stabilized and then stored in a charging capacitor;

[0023] ② First, the generated voltage signal generated by the piezoelectric film is collected, and the collected sinusoidal voltage signal is converted into a square wave voltage signal using the comparator of the MSP430 microprocessor. Then, the high and low pulse periods of the square wave voltage in unit time are detected. Finally, the frequency of the excitation force on the piezoelectric film is calculated to form a roller speed sensing method based on the generated voltage of the piezoelectric energy collection device, and then the current running speed of the roller is obtained, providing a basis for the adaptive adjustment of the sampling frequency at different running speeds.

[0024] ③ When the collected energy is high voltage, it is stepped down and supplies energy to each load, and the excess energy is stored in the battery; when the collected energy is low voltage, it automatically switches to the lithium battery to supply energy to the load;

[0025] 5. The array voltage detection circuit is connected to the control system, which continuously reads data and sends the data to the detection terminal through the wireless transmission module, and performs the following steps:

[0026] 1) Firstly, a time-driven rotation detection strategy is implemented, that is, the array voltage detection circuit detects the roller wear of the first, second, ..., nth sector areas in sequence;

[0027] 2) When the wear of each sector area of ​​the roller is in a state of slight wear, the time-driven rotation detection mode continues to be executed to save the overall energy consumption of the detection device;

[0028] 3) If a sector of the roller is found to be worn, perform the following steps:

[0029] ① The roller area where general wear occurs exits the time-driven rotation detection mode and starts to execute the event-driven continuous detection mode, that is, the wear value of the area is continuously monitored at a high sampling frequency;

[0030] ② The roller area with severe wear will exit the time-driven rotation detection mode, issue a wear warning, and start the event-driven refined detection mode, that is, continuously and at a high sampling frequency monitor the wear value of this area and adjacent areas, and upload the wear amount and wear area information to issue a warning, reminding the staff to replace it in time.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The self-powered mine roller ear wear detection device and method proposed in the present invention belong to non-destructive installation and non-destructive detection, which neither affects the normal operation of the roller ear nor destroys the structure of the roller ear. It is simple to install and easy to operate.

[0033] 2. Compared with the existing manual inspection and image detection methods, the method proposed by the present invention is based on flexible circuit board wiring, which can integrate the structure of the roller can ear, realize accurate detection of the wear amount of the roller can ear, is not easily affected by environmental noise, illumination, etc., and has strong environmental adaptability;

[0034] 3. The energy collection device proposed in the present invention can realize autonomous energy supply for the detection device, without the need for additional maintenance of the detection device, thus saving time and effort and improving the working efficiency of the lifting system;

[0035] 4. The time-driven rotation detection mode, event-driven continuous and refined detection modes proposed in the present invention can respectively carry out targeted detection on rollers with different degrees of wear, and have two advantages: on the one hand, it can reduce energy consumption to improve energy utilization efficiency; on the other hand, it can accurately locate the detection area that needs to be focused on according to different degrees of wear severity (mild, general, severe), realize quantitative and positioning detection of the wear amount of the roller can ear and intuitive display of data, so as to give targeted reminders to the staff, improve detection efficiency, and ensure the safety of system operation;

[0036] 5. The roller speed sensing method based on the power generation voltage of the piezoelectric energy collection device proposed in the present invention can be used for adaptive adjustment of the sampling frequency, which has two advantages: on the one hand, it can reduce energy consumption and improve energy utilization efficiency; on the other hand, the sampling frequency can be adaptively adjusted according to different operating conditions of the roller ear (high failure rate during acceleration, medium failure rate at a constant speed, and low failure rate during deceleration) and different degrees of wear (mild, general, and severe), thereby improving detection efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0038] Figure 1 This is a general diagram of the wear detection device of the present invention;

[0039] Figure 2 The array-type flexible detection circuit board deployment method of the present invention;

[0040] Figure 3 The flexible detection circuit board of the present invention;

[0041] Figure 4 The wear detection circuit and energy management circuit of the present invention;

[0042] Figure 5 The piezoelectric energy harvesting device of the present invention;

[0043] Figure 6 The energy supply process of the present invention;

[0044] Figure 7 It is the work flow chart of the present invention.

[0045] In the figure: 1. Roller; 2. Flexible detection circuit board; 3. Detection circuit board; 4. Piezoelectric energy collection device; 5. Detection terminal; 6. Data receiving module; 7. Excitation magnet; 8. Chip resistor; 9. Detection circuit power supply; 10. Detection circuit voltage divider resistor; 11. Full-bridge rectifier circuit; 12. Filter capacitor; 13. Voltage divider resistor; 14. LTC3331 energy management chip; 15. MSP430 control chip; 16. CC1310 wireless transmission module; 17. Energy collection device mounting bracket; 18. Piezoelectric sheet; 19. Magnet mass block. DETAILED DESCRIPTION

[0046] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1

[0048] See also Figure 1 As shown, a self-powered mine roller ear wear detection device provided by the present invention includes an array-type flexible circuit board wiring unit, an array-type voltage detection circuit, an energy collection device, a control system and a detection terminal.

[0049] The array-type flexible circuit boards 2 are evenly arranged along the outer diameter of the roller 1 of the roller can ear, and are sequentially pasted from the outer diameter to the inner diameter; each flexible circuit board 2 is respectively connected to a voltage detection circuit.

[0050] The energy collection device 4 includes a piezoelectric sheet 18, an excitation magnet 7, and an energy management circuit. The excitation magnet 7 is arranged on the roller bracket. One end of the piezoelectric sheet 18 is fixed to the roller flange in a cantilever beam manner, and the magnet mass block 19 is fixed to the free end of the piezoelectric sheet.

[0051] The detection terminal 5 includes a data receiving module 6, a host computer and a display device. The host computer receives the data transmitted by the data transmission module through the data receiving module 6, and the data is displayed by the display device.

[0052] Example 2

[0053] See also Figure 2-4 As shown, the array-type flexible circuit board 2 is evenly arranged along the outer diameter of the roller 1 of the roller can ear (assuming that the roller 1 is divided into n sector-shaped areas, then one sector-shaped area corresponds to a flexible circuit board wiring unit and a voltage detection circuit), and is pasted in sequence from the outer diameter to the inner diameter; each flexible circuit board 2 includes a plurality of arc-shaped wirings concentric with the roller, all of which are connected in parallel and arranged at non-equal intervals; each wiring is respectively connected to a chip resistor 8, and each flexible circuit board 2 is respectively provided with a first output terminal and a second output terminal connected to the voltage detection circuit.

[0054] Furthermore, if Figure 3 As shown, each flexible circuit board 2 is wired with a 0.1 mm wire. According to the actual radius of the roller 1, the diameter of the outermost arc-shaped wire is set to 250 mm, and then the wires are arranged in a non-equidistant array from large to small (d1>d2>…>dn, dn is the distance between the nth wire and the adjacent wire).

[0055] like Figure 4 As shown, the voltage detection circuit includes a detection circuit power supply 9, a detection circuit voltage divider resistor 10 and a detection circuit board 3; one end of the detection circuit power supply 9 is connected to the first output end of the flexible circuit board 2, and the other end is connected to the detection circuit voltage divider resistor 10 and then connected to the second output end of the flexible circuit board 2 to form a voltage detection circuit; the voltage detection power supply 9 and the detection circuit voltage divider resistor 10 are both arranged in the detection circuit board 3.

[0056] like Figure 4 As shown, the control system includes a control module and a CC1310 wireless transmission module 16, wherein the signal input end of the control module is respectively connected to the signal end of the array voltage detection circuit unit, and the signal output end of the control module is connected to the CC1310 wireless transmission module 16 through an output circuit.

[0057] Furthermore, the control module is an MSP430 low-power single-chip microcomputer 15; it includes a serial communication circuit and a data transmission module; the serial communication circuit is used to realize the collection of the voltage of the external array voltage detection circuit unit; the data transmission module is used to realize the real-time transmission of the voltage detection data.

[0058] Example 3

[0059] See also Figure 1 , 5 As shown, in this embodiment, when the lifting container starts to run, the roller 1 just contacts the tank channel and continuously rotates. At this time, the piezoelectric sheet 18 fixed on the roller flange also rotates periodically, so that the magnetic mass block 19 at the free end of the piezoelectric sheet 18 is magnetically excited by the excitation magnet 7 fixed on the roller bracket every time it rotates one circle. Under the periodic magnetic excitation, the piezoelectric sheet 18 is deformed and generates a generating voltage, thereby realizing energy collection.

[0060] like Figure 4 As shown, in this embodiment, the energy management circuit adopts the LTC3331 chip 14 and has a built-in full-bridge rectifier 11, which can store the AC power generated by the piezoelectric sheet 18 in a charging capacitor after rectification, filtering and voltage stabilization.

[0061] Furthermore, if Figure 6 As shown, when the energy collected by the accident energy collection device 4 is of high voltage, it is stepped down and supplies energy to each load, and the excess energy is stored in the battery; when the collected energy is of low voltage, it automatically switches to the lithium battery to supply energy to the load.

[0062] Example 4

[0063] See also Figure 7 As shown, the self-powered mine roller ear wear detection method based on the device described in Example 1 has the following specific steps:

[0064] 1. The lifting container starts to operate and each detection device performs self-inspection;

[0065] 2. The energy harvesting device starts working and performs the following steps:

[0066] 1) When the roller 1 just contacts the tank channel and continuously rotates, the piezoelectric sheet 18 fixed on the roller flange also rotates periodically, so that the magnetic mass block 19 at the free end of the piezoelectric sheet 18 is periodically magnetically excited by the excitation magnet 7 fixed on the roller bracket, and the piezoelectric sheet 18 is deformed and generates an AC voltage, thereby realizing energy collection;

[0067] 2) The energy management circuit performs the following steps:

[0068] ① The AC power generated by the piezoelectric sheet 18 is rectified, filtered and stabilized and then stored in a charging capacitor;

[0069] ② First, the generated voltage signal generated by the piezoelectric sheet 18 is collected, and the collected sinusoidal voltage signal is converted into a square wave voltage signal using the comparator of the MSP430 microprocessor 15, and then the high and low pulse periods of the square wave voltage in a unit time are detected; finally, the frequency of the excitation force on the piezoelectric sheet 18 is calculated, and a roller speed sensing method based on the generated voltage of the piezoelectric energy collection device is formed, and then the current running speed of the roller 1 is obtained, providing a basis for the adaptive adjustment of the sampling frequency at different running speeds;

[0070] ③ When the collected energy is high voltage, it is stepped down and supplies energy to each load, and the excess energy is stored in the battery; when the collected energy is low voltage, it automatically switches to the lithium battery to supply energy to the load;

[0071] 3. The array voltage detection circuit is connected to the control system, which continuously reads data and sends the data to the detection terminal through the wireless transmission module, and performs the following steps:

[0072] 1) Firstly, a time-driven rotation detection strategy is implemented, that is, the array voltage detection circuit detects the roller wear of the first, second, ..., nth sector areas in sequence;

[0073] 2) When the wear of each sector area of ​​the roller is in a state of slight wear, the time-driven rotation detection mode continues to be executed to save the overall energy consumption of the detection device;

[0074] 3) If a sector of the roller is found to be worn, perform the following steps:

[0075] ① The roller area where general wear occurs exits the time-driven rotation detection mode and starts to execute the event-driven continuous detection mode, that is, the wear value of the area is continuously monitored at a high sampling frequency;

[0076] ② The roller area with severe wear will exit the time-driven rotation detection mode, issue a wear warning, and start the event-driven refined detection mode, that is, continuously and at a high sampling frequency monitor the wear value of this area and adjacent areas, and upload the wear amount and wear area information to issue a warning, reminding the staff to replace it in time.

[0077] The principle of the detection method of the present invention is: when a certain sector-shaped area of ​​the roller is worn, the cables in the multi-flexible circuit board cable unit will break from the outside to the inside in sequence, and when the cables are broken, the voltage value detected by the voltage detection circuit unit corresponding to the flexible circuit board cable unit will become smaller. Since the spacing between the cables is known, the voltage value at both ends of the voltage divider resistor can be obtained in real time through the control system, and the number of broken cables in the flexible circuit board cable unit can be obtained, so as to obtain the wear amount of the sector-shaped area corresponding to the roller; then it is sent out through the data transmission module, obtained by the data receiving module, and then transmitted to the host computer; finally, the host computer compares the changes in data and uses the relationship between the voltage change at both ends of the voltage divider resistor and the wear amount to obtain the wear amount of the sector-shaped area corresponding to the roller. It should be noted that the roller ear wear detection method can not only accurately detect the wear amount of the roller, but also realize the positioning of the wear area. ; The wear of the roller is divided into three levels according to the degree of danger (serious, general, slight), which are high, medium and low respectively; the sampling frequency of the array voltage detection circuit can adaptively change with the change of the wear degree, the running speed and the failure rate (three stages of acceleration of the lifting container - high failure rate, uniform speed - medium failure rate, deceleration - low failure rate): when the wear of a certain area is at a low level or the lifting container is in the deceleration stage, the sampling frequency is set to low-frequency sampling; when it is at a medium level or a uniform speed stage, the sampling frequency is set to medium-frequency sampling; when it is at a high level or an acceleration stage, the sampling frequency is set to high-frequency sampling.

[0078] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-powered mine tank ear wear detection device, comprising an array-type flexible circuit board wiring unit, an array-type voltage detection circuit, an energy collection device, a control system and a detection terminal; characterized in that: Each flexible circuit board wiring unit is respectively connected to a voltage detection circuit unit; the control system includes a control module, a control power supply and a data transmission module, wherein the signal input end of the control module is respectively connected to the array voltage detection circuit unit signal, and the signal output end of the control module is connected to the wireless transmission module through the output circuit; the energy collection device includes a piezoelectric sheet, a magnet mass block, an excitation magnet and an energy management circuit; the detection terminal includes a data receiving module, a host computer and a display device, and the host computer receives the data transmitted by the data transmission module through the data receiving module.

2. A self-powered mine tank ear wear detection device according to claim 1, characterized in that: The array-type flexible circuit board wiring unit is evenly arranged along the outer diameter of the roller of the roller can ear, and is pasted in sequence from the outer diameter to the inner diameter; the voltage detection circuit includes a detection circuit power supply, a voltage dividing resistor and a detection circuit board; one end of the detection circuit power supply is connected to the first output end of the flexible circuit board wiring unit, and the other end is connected to the voltage dividing resistor and then connected to the second output end of the flexible circuit board wiring unit to form a voltage detection loop; the voltage detection power supply and the voltage dividing resistor are both arranged in the detection circuit board.

3. A self-powered mine tank ear wear detection device according to claim 1, characterized in that: The flexible circuit board wiring unit adopts 0.1mm wiring, and according to the actual radius value of the roller, the diameter of the outermost arc-shaped wiring is set to 250mm, and then the wiring is arranged in a non-equidistant array from large to small.

4. A self-powered mine tank ear wear detection device according to claim 1, characterized in that: The control module is an MSP430 single-chip microcomputer, which includes an MSP430 chip, a serial communication circuit and a data transmission module; the serial communication circuit is used to realize the collection of the voltage of the external array voltage detection circuit unit; the data transmission module is used to realize the real-time transmission of voltage detection data.

5. A self-powered mine tank ear wear detection device according to claim 1, characterized in that: The excitation magnet is arranged on the roller bracket, one end of the piezoelectric sheet is fixed on the roller flange in a cantilever beam fixing manner, and the magnet mass block is fixed on the free end of the piezoelectric sheet.

6. A self-powered mine tank ear wear detection device according to claim 5, characterized in that: When the lifting container starts to run, the roller contacts the tank channel and continuously rotates. The piezoelectric sheet rotates periodically with the roller flange. Every time the magnet mass block rotates one circle, it is magnetically excited by the excitation magnet fixed on the roller bracket. The piezoelectric sheet is deformed and generates a power generation voltage to achieve energy collection.

7. A self-powered mine tank ear wear detection device according to claim 5, characterized in that: The energy management circuit adopts the LTC3331 chip with a built-in full-bridge rectifier, and stores the AC power generated by the piezoelectric sheet in a charging capacitor after rectification, filtering and voltage stabilization.

8. A wear detection method for the self-powered mine tank ear wear detection device according to any one of claims 1 to 7, characterized in that: The detection method comprises the following steps: Step 1: The lifting container starts to run, and each detection device performs self-inspection; Step 2: The energy collection device starts working; S21: The AC power generated by the piezoelectric sheet is rectified, filtered and stabilized and then stored in a charging capacitor; S22: The MSP430 microprocessor collects the power generation voltage signal generated by the piezoelectric sheet, and uses a comparator to convert the collected sinusoidal voltage signal into a square wave voltage signal, obtains the high and low pulse periods of the square wave voltage in a unit time, and calculates the frequency of the excitation force on the piezoelectric sheet to form a roller speed sensing method based on the power generation voltage of the piezoelectric energy collection device, thereby obtaining the current running speed of the roller, and providing a basis for adaptive adjustment of the sampling frequency at different running speeds; S23: When the energy generated by the piezoelectric sheet is a high voltage, the voltage is reduced and each load is supplied with energy, and the excess energy is stored in the battery; when the energy generated by the piezoelectric sheet is a low voltage, the lithium battery is automatically switched to supply energy to the load; Step 3: The array voltage detection circuit is connected to the control system, and the control system continuously reads data and sends the data to the detection terminal through the wireless transmission module; S31: the control system executes a time-driven rotation detection strategy, that is, the array voltage detection circuit detects the roller wear amounts of the first, second, ..., nth sector areas in sequence; S32: When the wear amounts of each sector area of ​​the roller are in a slight wear state, the control system continues to execute the time-driven rotation-type detection mode to save the overall energy consumption of the detection device; S33: When wear is found in a sector-shaped area of ​​the roller, the following steps are executed: the roller area where general wear occurs exits the time-driven rotation detection mode, and starts to execute the event-driven continuous detection mode, i.e., the wear value of this area is continuously monitored at a high sampling frequency; the roller area where severe wear occurs exits the time-driven rotation detection mode, and a wear amount warning is issued, and then the event-driven refined detection mode is executed, i.e., the wear value of this area and adjacent areas is continuously monitored at a high sampling frequency, and the wear amount and wear area information are uploaded to issue a warning, so as to remind the staff to replace it in time.

9. The wear detection method of the self-powered mine tank ear wear detection device according to claim 8, characterized in that: The wear of the roller is divided into three levels according to the degree of danger, namely high, medium and low. The sampling frequency of the array voltage detection circuit changes adaptively with the change of the wear degree, the running speed and the failure rate: when the wear of a certain area is at a low level or the lifting container is in the deceleration stage, the sampling frequency is set to low-frequency sampling. When it is in the medium level or uniform speed stage, the sampling frequency is set to medium frequency sampling; when it is in the high level or acceleration stage, the sampling frequency is set to high frequency sampling.

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