CN110906854A - Carbon slide thickness measuring device based on eddy current sensor - Google Patents

Abstract

The invention provides a carbon slide plate thickness measuring device based on an eddy current sensor, which belongs to the field of measuring equipment and comprises a probe assembly and a monitor, wherein the probe assembly comprises a support, a sliding block and a sensor, the support is of a vertically arranged groove structure, the sliding block is arranged in the support and is arranged relative to the support in an up-and-down mode, a spring for enabling the sliding block to move downwards is arranged between the sliding block and the lower end face of the support, the upper end of the sliding block is provided with a sensing sheet, a position avoiding hole is formed in the area, corresponding to the sensing sheet, of the support, the sensor is arranged relative to the sensing sheet and detects the up-and-down position of the sensing sheet, the sensor. The invention can quickly test the thickness parameters of the carbon sliding plate at different positions, can display and output data, has more intelligent and automatic measurement, better precision and better preparation, and is convenient for storage and subsequent analysis.

Description

Carbon slide thickness measuring device based on eddy current sensor

Technical Field

The invention belongs to the field of measuring equipment, relates to thickness detection of parts, and particularly relates to thickness test of a carbon sliding plate on a pantograph on a railway.

Background

The device for connecting the train and the high-voltage wire is named as a pantograph, the pantograph is continuously worn as long as the train runs, a plurality of detachable carbon or powder alloy conductive sliding plates are arranged on the head of the pantograph and are used for contacting with a contact network to obtain electricity from the upper side, the sliding plates are soft, so that the main loss is on the sliding plates when the sliding plates rub the contact network, the abrasion to the contact network is quite small, the sliding plates only need to be replaced in the routine maintenance of the locomotive when the sliding plates are worn to the limit, although the sliding plates are troublesome, the contact network wire is saved, the sliding plates are usually made of graphite, the graphite is worn quickly, the carbon sliding plates need to be replaced regularly, the replacement is convenient and easy, the cost is low, the sliding plates are called as carbon sliding plates, the carbon sliding plates are mainly made of aluminum plates and carbon layers, and the current is introduced into the locomotive when the locomotive is in contact with the electric wires in the running process, the locomotive is powered, the thickness of the carbon layer is reduced after the locomotive is worn, and the locomotive is replaced when the thickness of the carbon layer is required to be less than 5mm by current detection.

The thickness of the carbon sliding plate is a main parameter for determining whether the carbon sliding plate needs to be replaced, if the thinnest part of the carbon sliding plate does not conform to the use specification, the carbon sliding plate needs to be replaced, so that the thinnest thickness of the carbon sliding plate is measured accurately, the replacement is not performed to a certain thickness, the replacement is frequent, the safety is improved, the cost is increased, raw materials are wasted, if the carbon sliding plate is not replaced on time, more serious potential safety hazards exist, railway locomotive department workers at the current stage mainly measure the thickness of the carbon sliding plate by using vernier calipers, then test data are recorded, human errors exist, point location tests can be performed only, and the thinnest position of the thickness of the carbon sliding plate can be determined visually.

Through finding documents, a special tool for testing the thickness of the pantograph carbon slide plate is found, and grooves with scales and gradually increased sections are arranged, see patent document CN 200520135437.2.

Disclosure of Invention

The invention aims to provide a carbon sliding plate thickness measuring device based on an eddy current sensor, which can quickly test the thickness parameters of a carbon sliding plate at different positions, can display and output data, has more intelligent and automatic measurement, better precision and better preparation performance, and is convenient to store and analyze subsequently.

In order to solve the technical problems, the invention adopts the technical scheme that: the carbon sliding plate thickness measuring device based on the eddy current sensor comprises a probe assembly and a monitor, wherein the probe assembly comprises a support, a sliding block and a sensor, the support is of a vertically arranged groove-shaped structure, the sliding block is arranged in the support and is arranged in a mode of moving up and down relative to the support, a spring for enabling the sliding block to move downwards is arranged between the sliding block and the lower end face of the support, an induction sheet is arranged at the upper end of the sliding block, a position avoiding hole is formed in an area, corresponding to the induction sheet, of the support, the sensor is arranged relative to the induction sheet and detects the upper position and the lower position of the induction sheet, and the sensor is electrically connected with the monitor;

the monitor is used for receiving, processing and displaying data.

Furthermore, a first universal ball bearing is embedded in the middle of the lower end of the sliding block, the lower end face of the first universal ball bearing is lower than the lower end of the sliding block, a plurality of second universal ball bearings are embedded on the lower end face of the support, the upper end face of each second universal ball bearing is higher than the upper end face of the support, and the first universal ball bearings are arranged right above the areas formed by the second universal ball bearings.

Further, the support includes bottom plate, riser and roof, keep away the position hole and establish on the roof, the section of riser is flute profile and opening orientation the slider sets up, the slider with be equipped with the fixed plate between the riser, the fixed plate with riser fixed connection, the slider with fixed plate passes through sliding connection from top to bottom through the line rail, the spring is established the slider with between the bottom plate and right the slider has the pulling force, the one end of spring with bottom plate fixed connection, the other end with the lower extreme fixed connection of slider.

Further, the upper end of support has set firmly the top cap, the sensor inlays to be established the lower extreme of top cap, the top cap is close to the one end of support is equipped with first wire casing, the upper end of support is equipped with the second wire casing, first wire casing and second wire casing correspond the setting from top to bottom, first wire casing with the signal line of sensor corresponds the setting.

Further, the slider be T shape and the one end of broad with the support cooperation sets up, the response piece is No. 45 steel sheets, response piece, slider are kept away from the one end of support with the support parallel and level sets up, response piece length direction's both ends are the arc.

Further, the sensor is an eddy current sensor or a laser distance sensor, the sensor is of a flat T-shaped structure, and a third wire groove is formed in the upper end of the sensor.

Furthermore, the sensor is a wide-range distance measurement eddy current sensor with the diameter of 25mm, the range of 20mm and the precision of +/-1.5 percent, the monitor comprises a prepositioner, and the prepositioner is a small-volume prepositioner matched with the sensor.

Further, the monitor comprises a processor for performing analog-digital conversion and obtaining a distance value between the sensor and the sensing piece, and the processor selects an STM32F103 series 32-bit processor.

Furthermore, the monitor comprises a display screen and a film key, wherein the display screen displays texts and curves formed by data processed by the processor, and the film key is used for inputting parameters and controlling the process.

Further, the monitor still includes power supply circuit, CAN interface and SD card interface circuit, power supply circuit is DCDC power converter, the CAN interface is used for uploading the carbon slide thickness information that equipment was gathered to third party collection control system, SD card interface circuit is arranged in the carbon slide thickness information storage that will gather to the SD card to the storage is carried out to EXCEL document form.

Compared with the prior art, the invention has the following advantages and positive effects.

1. The carbon sliding plate is positioned between the sliding block and the lower end face of the support, the sliding block and the carbon sliding plate are always in a fit state under the action of the spring, the probe assembly is moved from one end of the carbon sliding block to the other end, the upper position and the lower position of the sliding block are different at different thickness positions, so that the upper position and the lower position of the induction sheet are driven to change, the sensor receives corresponding data signals and processes the data signals to convert the data signals into corresponding thickness data to be displayed, meanwhile, an SD card interface circuit is arranged in the monitor, so that the data can be conveniently led out and stored, the automatic storage and display of the data in the measuring process are realized, the labor efficiency is improved, the testing precision is improved, the labor intensity is reduced, the testing precision is improved, the carbon sliding block can be replaced in a more accurate range, the waste is avoided, the safety is ensured;

2. after the first universal bearing and the second universal bearing are arranged, the contact area between the first universal bearing and the carbon slide block is reduced, so that the first universal bearing and the second universal bearing are in point contact with the carbon slide block, the friction force is reduced, the probe assembly can conveniently and quickly move on the carbon slide block, the labor intensity is reduced, and the test is more convenient and quicker;

3. the structure of the top cover is arranged, so that the sensor is protected, the sensor assembly is prevented from being damaged by the external environment, the service life of the sensor is greatly prolonged, the signal line of the sensor can pass through the first wire groove and the second wire groove, and certain guiding and protecting effects are achieved, so that the wire outlet is convenient and more regular;

4. the sensor is flat T-shaped structure, and is a relatively common cylindrical structure, and the space occupied by the structure is smaller, so that the whole structure is more compact, the occupied space is smaller, the sensor is convenient to take and place, and the whole appearance is more attractive.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a left-side structural schematic diagram of a carbon slide thickness measuring device based on an eddy current sensor.

FIG. 2 is a schematic structural diagram of a carbon slide thickness measuring device based on an eddy current sensor according to the present invention viewed from the right.

Fig. 3 is a longitudinal sectional view of the carbon slide thickness measuring device based on the eddy current sensor according to the present invention.

FIG. 4 is a rear view of the carbon slide thickness measuring device based on the eddy current sensor according to the present invention.

FIG. 5 is a schematic view of the structure of the stent of the present invention.

FIG. 6 is a schematic structural view of a top cover according to the present invention;

FIG. 7 is a schematic top view of the sensor of the present invention;

FIG. 8 is a schematic bottom view of the sensor of the present invention;

FIG. 9 is a front view of the monitor of the present invention;

FIG. 10 is a schematic circuit diagram of the probe assembly of the present invention;

FIG. 11 is a circuit schematic of the display screen of the present invention;

FIG. 12 is a circuit schematic of the power supply circuit of the present invention;

FIG. 13 is a circuit schematic of the CAN interface circuit of the present invention;

fig. 14 is a circuit schematic of the SD card interface circuit of the present invention.

Reference numerals:

11. a support; 111. a second universal bearing; 112. a base plate; 113. a vertical plate; 114. a top plate; 1141. a second wire slot; 115. avoiding holes; 12. a slider; 121. a first universal bearing; 13. an induction sheet; 14. a top cover; 141. a first wire slot; 15. a fixing plate; 16. a lifting plate; 17. a sensor; 171. a third wire slot; 172. threading holes; 173. a sealing groove; 18. a spring; 21. a housing; 22. protecting the corner; 23. a first aerospace joint; 24. a second aerospace joint; 25. a charging connector; 26. a display screen; 27. a thin film key; 28. a handle.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1 to 9, the invention relates to a carbon sliding plate thickness measuring device based on an eddy current sensor, which comprises a probe assembly and a monitor, wherein the probe assembly comprises a bracket 11, a sliding block 12 and a sensor 17, the bracket 11 is of a vertically arranged groove structure, the sliding block 12 is arranged in the bracket 11 and is arranged in a way of moving up and down relative to the bracket 11, a spring 18 for enabling the sliding block 12 to move down is arranged between the sliding block 12 and the lower end surface of the bracket 11, an induction sheet 13 is arranged at the upper end of the sliding block 12, a position avoiding hole 115 is arranged in the area of the bracket 11 corresponding to the induction sheet 13, the sensor 17 is arranged relative to the induction sheet 13 and detects the up-down position of the induction sheet; the monitor is used for receiving, processing and displaying data, the carbon sliding plate is positioned between the sliding block 12 and the lower end surface of the bracket 11, the sliding block 12 and the carbon sliding plate are always in a fit state under the action of the spring 18, the probe assembly is moved from one end of the carbon sliding block 12 to the other end, the upper position and the lower position of the sliding block 12 are different at different thickness positions, so that the upper position and the lower position of the sensing piece 13 are driven to change, the sensor 17 receives and processes corresponding data signals, the corresponding thickness data are converted into corresponding thickness data and displayed, meanwhile, an SD card interface circuit is arranged in the monitor, the data are conveniently led out and stored, the automatic storage and display of the data in the measuring process are realized, the labor efficiency is improved, the testing precision is improved, the labor intensity is reduced, the testing precision is improved, the carbon sliding block 12 can be replaced in a more accurate range, the waste is avoided, and, the maintenance cost is reduced, the usage amount of the carbon sliding blocks 12 for the railway production line is large, the cost change of each carbon sliding block 12 influences the large cost change, and small technical breakthroughs are difficult to make in the existing mature technology.

Preferably, the lower extreme middle part of slider 12 inlays and is equipped with first universal ball bearing, the lower terminal surface of first universal ball bearing is less than the lower extreme setting of slider 12, it is equipped with a plurality of universal ball bearings of second to inlay on the lower terminal surface of support 11, the up end of the universal ball bearing of second is higher than the up end setting of support 11, first universal ball bearing is established directly over the region that a plurality of universal ball bearings of second formed, after setting up first universal bearing 121 and second universal bearing 111, reduce the area of contact with carbon slider 12, make the two all be the point contact with carbon slider 12, reduce frictional force, make things convenient for the quick removal of probe subassembly on carbon slider 12, reduce intensity of labour, make the test more convenient and swift.

Preferably, the support 11 includes a bottom plate 112, a vertical plate 113 and a top plate 114, the avoiding hole 115 is disposed on the top plate 114, the section of the vertical plate 113 is groove-shaped, the opening of the vertical plate is disposed toward the slider 12, a fixing plate 15 is disposed between the slider 12 and the vertical plate 113, the fixing plate 15 is fixedly connected to the vertical plate 113, a lifting plate 16 is disposed between the slider 12 and the fixing plate 15, the lifting plate 16 is slidably connected to the fixing plate 15 up and down through a wire rail, the slider 12 is disposed at the upper end of the lifting plate 16, a spring 18 is disposed between the lifting plate 16 and the bottom plate 112 and has a pulling force on the slider 12, one end of the spring 18 is fixedly connected to the bottom plate 112, the other end is fixedly connected to the lower end of the lifting plate 16, the support 11 structure ensures the precision of the slider 12 moving up and down, and further ensures the testing precision, in this structure, the fixed connection of the sensing piece, the second universal bearing 111 is fixed with the support 11 in a sticking mode, and the other parts are fixed by screws, so that the structure is simple, stable and reliable.

Preferably, the upper end of support 11 has set firmly top cap 14, sensor 17 inlays the lower extreme of establishing at top cap 14, top cap 14 is close to the one end of support 11 and is equipped with first line groove 141, the upper end of support 11 is equipped with second line groove 1141, first line groove 141 and second line groove 1141 correspond the setting from top to bottom, first line groove 141 corresponds the setting with sensor 17's signal line, set up top cap 14's structure, play the effect of protection to sensor 17, avoid external environment to harm sensor 17 assembly, sensor 17's life has been prolonged greatly, after setting up first line groove 141 and second line groove 1141, be favorable to sensor 17's signal line process, certain direction and guard action have, make the line of being qualified for the next round of competitions convenient and more regularization.

Preferably, slider 12 is T shape and the one end of broad and support 11 cooperation setting, and the T shape structure of slider 12 conveniently connects the solid lock, is favorable to subtracting heavy setting moreover, reduces overall structure's weight, and response piece 13 is No. 45 steel sheets, and long service life corresponds with sensor 17, and the response sensitivity is high, and the one end and the support 11 parallel and level setting of support 11 are kept away from to response piece 13, slider 12, and the both ends of response piece 13 length direction are the arc, and are pleasing to the eye, and be difficult for hindering operating personnel moreover.

Preferably, sensor 17 is eddy current sensor 17 or laser distance sensor 17, sensor 17 is the T shape structure of platykurtic and the upper end is equipped with third wire casing 171, this sensor 17's principle is the same with ordinary eddy current sensor 17's principle, the structural style changes the form of this application, common cylindrical structure relatively, the space that this structural style occupy is littleer, make holistic structure compacter, occupation space is littleer, and conveniently take and put, whole appearance is also more pleasing to the eye, sensor 17's lower extreme is equipped with four through wires holes 172, the induction zone circumference equipartition at through wires hole 172 relative center sets up, the lower extreme of through wires hole 172 is equipped with the seal groove 173 of indent, be favorable to sealing after the threading, prevent to receive damp or other external environment influences.

Preferably, the sensor 17 is a wide-range distance measurement eddy current sensor 17 with the diameter of 25mm and the range of 20mm and the precision of +/-1.5%, and the monitor comprises a front-end device which is a small-volume front-end device matched with the sensor 17 and is convenient to integrate into carbon slide thickness measuring equipment.

Preferably, the shell 21 of the monitor is composed of a sheet metal shell 21, four corners of the shell are provided with angle guards 22, the monitor comprises a processor which carries out analog-digital conversion and obtains a distance value between the sensor 17 and the sensing piece 13, the processor selects an STM32F103 series 32-bit processor, an STM32F series belongs to a middle-low 32-bit ARM microcontroller, the series of chips are produced by Italian Semiconductor (ST) company, and the inner core of the series of chips is Cortex-M3. The series of chips can be divided into three categories according to the size of Flash in the chip: small capacity (16K and 32K), medium capacity (64K and 128K), large capacity (256K, 384K and 512K). The chip integrates a timer, CAN, ADC, SPI, I2C, USB, UART and other functions, a voltage signal generated by the eddy current sensor 17 is connected to an ADC pin of the processor, the processor performs analog-digital conversion to obtain a digital quantity, a distance value between the sensor 17 and a target metal sheet is obtained through linearization and calibration algorithms, and a circuit board where the processor is located is connected with the shell 21 of the monitor through a copper column.

Preferably, the monitor comprises a display screen 26 and a film key 27, the display screen 26 displays texts and curves formed by data processed by the processor, a UART liquid crystal module is adopted as a finished color TFT display screen 26 device, display can be performed by using a UART interface and supplying power by 5V, the human-computer interface is friendly, the display screen 26 and the shell 21 are connected and fixed through screws, and the film key 27 is used for inputting parameters and controlling the process; more preferably, the upper end of the detector is provided with a first aviation connector 23, a second aviation connector 24 and a charging connector 25 which are in threaded connection, the first aviation connector 23 is used for connecting a connecting wire of the eddy current sensor 17, the second aviation connector 24 is used for communication data derivation, the charging connector 25 is used for connecting a charger, more preferably, the film key 27 is fixedly connected with the shell 21 in a sticking mode, the film key 27 comprises a back key, an upper key, a lower key, a left key, a right key, a start key and a set key, and the start key is used for starting and shutting down the device; the left key is used for determining a starting point of the test position; the right key is used for determining the end point of the test position; the set key is used for zero clearing operation of the equipment; the back key is used as a function key for selecting information such as user date, train number, carbon slide plate number and the like; the upper key is a function key, and the user selects information such as date, train number, carbon slide plate number and the like; the upper key is a function key, and the user selects information such as date, train number, carbon slide plate number and the like; more preferably, one side of the monitor is provided with a handle 28 for easy access.

The area of the display screen 26 is divided into an upper part and a lower part, the upper part is sequentially set into A, B areas and C areas from left to right, the lower part is set into a D area, and the area A is used for displaying the minimum value of five evenly divided areas after the test is finished; the area B is used for displaying the real-time thickness of the carbon sliding plate; the area C is used for displaying the thickness state of the carbon sliding plate, and when the thickness state exceeds a limit value, the area is displayed in red, and when the thickness state does not exceed the limit value, the area is displayed in green; the area D is used for displaying user operation prompt information.

Preferably, the monitor also includes the power supply circuit, CAN interface and SD card interface circuit, the power supply circuit is DCDC power converter, use DCDC power converter LM2676 to turn 8.4V of battery voltage into 5V and supply power for liquid crystal and electric eddy current prestressor, the transformation efficiency of this kind of device is up to more than 85%, suitable for the portable apparatus of the battery power supply; and then 5V is converted into 3.3V to supply power to the single chip microcomputer by using the LDO low-voltage difference power supply device LM1117-3.3V, the device is characterized in that the voltage difference is small, the output ripple is low, the CAN interface is used for uploading the thickness information of the carbon slide plate acquired by the device to a third-party acquisition control system, and the SD card interface circuit is used for storing the acquired thickness information of the carbon slide plate into an SD card in an EXCEL document form, so that the data management is convenient.

In the actual working process, a start key is pressed for a long time, the equipment is started, the display screen 26 is lightened, a set key is clicked, zero clearing operation is carried out, calibration is completed, the probe assembly is placed at the starting point of a carbon sliding plate to be tested, namely one end of the carbon sliding plate, then a left key is clicked, the position of the starting point is determined, after a dripping sound is emitted, the probe device is moved on the carbon sliding plate, the testing distance is displayed in real time in the area B, the area B is moved to the end point, a right key is clicked, the end position is determined, and when the thickness of the carbon sliding plate is smaller than a set limit value in the testing process, the area C is changed into red, and meanwhile, a buzzer emits abnormal; when the thickness of the carbon sliding plate is not less than the set limit value, the area C is changed into green, after a right key is clicked, the area A displays that the carbon sliding plate is divided into 5 areas from the starting position to the end position, the minimum value of each area is clicked, the test data can be output, the key is clicked, the appearance curve of the carbon sliding plate tested at this time can be displayed, the traditional manual measurement and recording are converted into simple moving action, the measurement of the thickness of each point and the recording of the data are completed in the moving process, meanwhile, in the measuring process, a buzzer is arranged aiming at unqualified data parameters for alarming, real-time reminding is carried out, the precision of the test is higher, the operation is more convenient and faster, the automation degree is higher, the distance and the derivation of the data can be carried out, the batch analysis and the summarization of the subsequent data arrangement are convenient, and basic data and bases are provided for the research, development and improvement of the subsequent technology, and moreover, the labor intensity is reduced, and the working efficiency is improved.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. Carbon slide thickness measurement device based on eddy current sensor, its characterized in that: the device comprises a probe assembly and a monitor, wherein the probe assembly comprises a support, a sliding block and a sensor, the support is of a vertically arranged groove structure, the sliding block is arranged in the support and is arranged in a manner of moving up and down relative to the support, a spring for enabling the sliding block to move downwards is arranged between the sliding block and the lower end face of the support, an induction sheet is arranged at the upper end of the sliding block, an avoidance hole is arranged in a region of the support corresponding to the induction sheet, the sensor is arranged relative to the induction sheet and detects the upper position and the lower position of the induction sheet, and the sensor is electrically connected with the monitor;

the monitor is used for receiving, processing and displaying data.

2. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the lower extreme middle part of slider inlays and is equipped with first universal ball bearing, the lower terminal surface of first universal ball bearing is less than the lower extreme setting of slider, it is equipped with a plurality of universal ball bearings of second to inlay on the lower terminal surface of support, the up end of universal ball bearing of second is higher than the up end setting of support, first universal ball bearing establishes a plurality ofly directly over the region that the universal ball bearing of second formed.

3. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the support includes bottom plate, riser and roof, keep away the position hole and establish on the roof, the section of riser is flute profile and opening orientation the slider sets up, the slider with be equipped with the fixed plate between the riser, the fixed plate with riser fixed connection, the slider with the fixed plate passes through sliding connection from top to bottom of line rail, the spring is established the slider with between the bottom plate and right the slider has the pulling force, the one end of spring with bottom plate fixed connection, the other end with the lower extreme fixed connection of slider.

4. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the upper end of support has set firmly the top cap, the sensor inlays to be established the lower extreme of top cap, the top cap is close to the one end of support is equipped with first wire casing, the upper end of support is equipped with the second wire casing, first wire casing and second wire casing correspond the setting from top to bottom, first wire casing with the signal line of sensor corresponds the setting.

5. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the slider be T shape and the one end of broad with the support cooperation sets up, the response piece is No. 45 steel sheets, response piece, slider are kept away from the one end of support with the support parallel and level sets up, response piece length direction's both ends are the arc.

6. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the sensor is an eddy current sensor or a laser distance sensor, the sensor is of a flat T-shaped structure, and a third wire groove is formed in the upper end of the sensor.

7. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the sensor is a wide-range distance measurement eddy current sensor with the diameter of 25mm, the range of 20mm and the precision of +/-1.5 percent, the monitor comprises a front-mounted device, and the front-mounted device is a small-volume front-mounted device matched with the sensor.

8. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 1, wherein: the monitor includes a processor that performs analog-to-digital conversion and obtains a value of the distance between the sensor and the sensor plate, the processor selecting an STM32F103 series 32-bit processor.

9. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 8, wherein: the monitor comprises a display screen and a film key, wherein the display screen displays texts and curves formed by data processed by the processor, and the film key is used for inputting parameters and controlling the process.

10. The eddy current sensor-based carbon skid thickness measuring apparatus according to claim 8, wherein: the monitor also comprises a power supply circuit, a CAN interface and an SD card interface circuit, wherein the power supply circuit is a DCDC power converter, the CAN interface is used for uploading the thickness information of the carbon sliding plate acquired by the equipment to a third-party acquisition control system, and the SD card interface circuit is used for storing the acquired thickness information of the carbon sliding plate into an SD card in an EXCEL document form.

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