Intelligent front-end acquisition system for thermal resistor of power plant

Abstract

The invention relates to the technical field of power plants, in particular to a power plant thermal resistance intelligent front-end acquisition system, which comprises a main body and a chassis, the device comprises a main body and further comprises a holder, a main control unit, a driving coil module, a plurality of thermal resistance sensors and a plurality of driven coil modules, the holder is installed on the main body, the main control unit is installed at the rotating end of the holder, and the driving coil module is installed at the front end of the main control unit; the passive coil modules are installed on the multiple thermal resistance sensors, the active coil modules and the passive coil modules are matched to wirelessly supply power to the thermal resistance sensors so that the thermal resistance sensors can generate corresponding electric signals at different temperatures, and the primary processing module of the main body receives the electric signals generated by the thermal resistance sensors and converts the electric signals into temperature values. The temperature value is sent to a superior data processing system through the communication module; temperature data are automatically collected in the inspection process, the thermal resistor is powered by the wireless charging subsystem, and reliability and precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of power plants, and in particular to an intelligent front-end acquisition system for thermal resistors in power plants. Background Art

[0002] A thermal resistor is a sensor that measures temperature based on the property that the resistance value changes with temperature, and is also called a resistive temperature sensor. Thermal resistors are widely used in power plants to detect the temperature of power generation equipment and related pipelines. The prior art discloses a variety of temperature front-end detection systems based on thermal resistors, such as a power plant air-cooling island temperature monitoring device and monitoring method proposed in the Chinese invention application with publication number CN113834587A. The monitoring system senses the temperature of each part through a sensor, and reads the temperature of each sampling point through an acquisition module (dust-proof and waterproof temperature acquisition module) installed near the sampling point. Then the unit host reads the data collected by each connected acquisition module through the unit bus cycle, and then multiple unit hosts exchange data with the upper-level production management system through the system bus, and can also receive instructions from the upper-level system to perform necessary on-site operations. For example, the Chinese utility model patent with publication number CN221685715U proposes a temperature monitoring device for the excitation distribution room of a power plant. The temperature monitoring device installs a movable temperature sensor in the excitation distribution room. After the temperature sensor collects the temperature signal, it is transferred through the excitation system terminal, so that the intelligent data acquisition front end processes the collected temperature signal and sends it to the distributed control system through a specific communication protocol. The on-duty personnel can monitor the temperature of the excitation distribution room in real time online through the DCS workstation.

[0003] However, the above-mentioned prior art does not improve the thermal resistor. Traditional thermal resistors generally use cables for signal transmission, and the temperature of the power generation equipment and related pipelines in the power plant is relatively high, which can easily lead to cable aging and even monitoring failure. In the prior art CN221685715U, a temperature monitoring device for the excitation distribution room of a power plant, the temperature sensor is moved in the workshop to collect temperature data. Although it avoids high-temperature aging of the cable, the temperature sensor is not installed on the related equipment, which can easily cause inaccurate temperature monitoring. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a power plant thermal resistor intelligent front-end acquisition system which automatically collects temperature data during inspections and uses a wireless charging subsystem to power the thermal resistor to improve reliability and accuracy.

[0005] The invention discloses an intelligent front-end acquisition system for thermal resistors in a power plant, comprising a main body and a chassis, wherein the main body is mounted on the chassis; the system also comprises a pan-tilt, a main control unit, an active coil module, a plurality of thermal resistor sensors and a plurality of passive coil modules, a communication module and a primary processing module are installed inside the main body, the communication module is communicatively connected with a superior data processing system, the pan-tilt is installed on the main body, the main control unit is installed on the rotating end of the pan-tilt, an active coil module is installed at the front end of the main control unit, a plurality of thermal resistor sensors are respectively installed at designated positions of the power plant, and a plurality of thermal resistor sensors are all installed with passive coil modules, the passive coil module comprises a coil and a circuit module, the circuit module comprises a voltage stabilizing circuit, the active coil module cooperates with the passive coil module to wirelessly power the thermal resistor sensor so that the thermal resistor sensor generates corresponding electrical signals at different temperatures, the primary processing module of the main body receives the electrical signals generated by the thermal resistor sensor and converts them into temperature values, and the temperature values ​​are sent to the superior data processing system through the communication module; during operation, a plurality of thermal resistor sensors are installed at designated positions of power generation equipment and corresponding pipelines in the power plant, and the chassis regularly drives the main control unit to transmit power to the power plant. The main body moves along the set inspection route in the power plant. When the main body reaches the corresponding mark point, the pan / tilt drives the main control unit to rotate so that the active coil module faces the passive coil module and is aligned. The active coil module is energized to generate a changing magnetic field. The coil of the passive coil module senses the changing magnetic field to generate a voltage. After being stabilized by the voltage stabilizing circuit, the voltage acts on the thermal resistor sensor to generate a current. Since the thermal resistor sensor has different resistance values ​​at different temperatures, the current of the voltage acting on the thermal resistor sensor is also different. The primary processing module receives the electrical signal generated by the current and converts it into a digital signal of the temperature value. The communication module sends the digital signal of the temperature value to the upper data processing system. Compared with the prior art, the temperature data is automatically collected during the regular inspection of the main body. Multiple thermal resistor sensors are temporarily powered by a wireless charging subsystem composed of multiple passive coil modules and active coil modules, which cancels the traditional signal cable, avoids monitoring failure caused by cable aging, and improves reliability. In addition, multiple thermal resistor sensors are installed at designated positions, and the temperature monitoring accuracy is guaranteed.

[0006] Preferably, the primary processing module includes a receiving module and multiple sending modules, the pan-tilt is installed on the main body, the receiving module is installed on the main body through the pan-tilt, the multiple sending modules are respectively installed on multiple thermal resistor sensors, the sending module includes an antenna and a current detection circuit, the multiple passive coil modules respectively power the multiple sending modules through the circuit module, the multiple sending modules respectively detect the current passing through the multiple thermal resistor sensors through the current detection circuit and send electromagnetic signals through the antenna after amplification, the receiving module is used to receive the electromagnetic signal and convert the electromagnetic signal into a digital signal of the temperature value; the active coil module is wirelessly powered when aligned with the passive coil module, the passive coil module generates voltage and then powers the thermal resistor sensor and the sending module through the voltage stabilizing circuit, so that the thermal resistor sensor generates current, the sending module detects the size of the current and sends the electromagnetic signal through the antenna, the receiving module receives the electromagnetic signal and converts it into a digital signal of the temperature value, the communication module sends the digital signal of the temperature value to the upper data processing system, and the practicality is good.

[0007] Preferably, it also includes multiple RFID readers and RFID tags. The RFID reader is installed on the pan-tilt platform, and the multiple RFID tags are respectively installed on multiple thermal resistor sensors. The RFID reader and the RFID tags cooperate to locate the main body; the chassis drives the main body to inspect along the set route, and the RFID reader transmits a signal. When the RFID tag enters the signal range of the RFID reader, an induction signal is generated. After the RFID reader receives the induction signal, the chassis stops, and the main body reaches the calibration position. The pan-tilt platform drives the main control unit to rotate. When the RFID reader receives the strongest induction signal, the main control unit faces the thermal resistor sensor, and the active coil module is aligned with the passive coil module, which has good practicality.

[0008] Preferably, it also includes an infrared camera, which is installed on a pan-tilt platform and parallel to the main control unit; the infrared camera detects the ambient temperature on the inspection road, and when an abnormal temperature is found, it is sent to the superior data processing system through the communication module to improve the efficiency of temperature data collection.

[0009] Preferably, it also includes obstacle avoidance radars. Four obstacle avoidance radars are arranged and installed on the four side walls of the main body. The four obstacle avoidance radars scan and record obstacles on the inspection route of the main body to avoid collisions, and mark new obstacles, and send the new obstacles to the superior data processing system through the communication module to improve the safety of the inspection.

[0010] Preferably, multiple temperature probes are also included, and temperature probes are set on the diagonals of the four obstacle avoidance radars; the multiple temperature probes are used to detect the temperature around the main body. When the temperature on one side of the main body is found to be abnormal, the gimbal drives the infrared camera to rotate so that the infrared camera faces the direction of the temperature abnormality. The infrared camera locates the position of the temperature abnormality to improve the temperature collection efficiency.

[0011] Preferably, it also includes a temporary temperature monitoring module and a retractable arm. The temporary temperature monitoring module is stored in the storage bin of the main body. The retractable arm is used to put the temporary temperature monitoring module to the abnormal temperature position and recover it. The retractable arm includes a slide rail, a telescopic arm, a push cylinder, multiple articulated arms, multiple servo motors, an end rod and a clamping assembly. The slide rail is installed in the storage bin of the main body. The telescopic arm is slidably installed on the slide rail through a slider. One end of the push cylinder is connected to the telescopic arm, and the other end of the push cylinder is connected to the main body. The multiple articulated arms are hinged in sequence head to tail. The outer end of the first passive coil module is hinged to the outer end of the telescopic arm, and the outer end of the last passive coil module is hinged to one end of the end rod. The multiple servo motors are respectively installed on the telescopic arm and the multiple articulated arms. The output shafts of the multiple servo motors are respectively connected to the multiple articulated arms and the end rod for transmission. The clamping assembly is connected, and the other end of the end rod is installed with the clamping assembly, which is used to clamp the temporary temperature monitoring module; multiple servo motors drive multiple articulated arms and end rods to rotate around their hinge axes respectively, so that the multiple articulated arms and end rods are folded and stored, so that the end rod drives the clamping assembly to extend into the storage bin of the main body to clamp the temporary temperature monitoring module, the piston rod of the push cylinder is extended to push the telescopic arm to move along the slide rail, thereby driving the clamping assembly to move in the storage bin, and selectively clamping the specified temporary temperature monitoring module, multiple servo motors drive multiple articulated arms and end rods to rotate around their hinge axes respectively, so that the multiple articulated arms and end rods are unfolded, and the temporary temperature monitoring module is placed at the abnormal temperature position, and the temporary temperature monitoring module can be placed at different positions by setting the number of articulated arms, which has good practicality.

[0012] Preferably, the clamping assembly includes a clamping block, two clamping jaws, two shafts, a servo motor 2, a cam, a slide rail 2, a rack, a servo motor 3 and a gear. The two clamping jaws are relatively arranged below the clamping block. The middle parts of the two clamping jaws are hinged to the lower part of the clamping block through two shafts respectively. The lower parts of the two clamping jaws are clamping jaws. The upper parts of the two clamping jaws are both provided with slide grooves. The servo motor 2 is installed in the middle part of the lower end surface of the clamping block. The output shaft of the servo motor 2 is installed with a cam. The cam is slidably connected with the slide grooves of the two clamping jaws. The slide rail 2 is installed on the end rod. The slide rail 2 is arranged vertically with the end rod. The side wall of the slide rail 2 is installed with a rack. The clamping block is slidably installed on the end rod. The servo motor Servo motor three is installed on the clamping block, and the output shaft of servo motor three is concentrically installed with a gear, and the gear is meshed with the rack; the gear drives servo motor three to rotate, and servo motor three meshing rack drives the clamping block to move along slide rail two, so that the clamping block moves to above the specified temporary temperature monitoring module, and servo motor two drives the cam to rotate, so that the two clamping jaws rotate around the two shafts respectively, so that the lower clamping jaws of the two clamping jaws close to clamp the two sides of the temporary temperature monitoring module, when the temporary temperature monitoring module reaches the position where the temperature is abnormal, servo motor two drives the cam to rotate, so that the lower clamping jaws of the two clamping jaws open to release the temporary temperature monitoring module, and the clamping is stable and reliable.

[0013] Preferably, the temporary temperature monitoring module includes a temperature probe 2, a passive coil module 2, a sending module 2 and an RFID tag 2, wherein the passive coil module 2, the sending module 2 and the RFID tag 2 are installed on the temperature probe 2, the passive coil module 2 cooperates with the active coil module to power the temperature probe 2 and the sending module 2, the passive coil module 2 has the same structure as the passive coil module, the sending module 2 has the same structure as the sending module, and the RFID tag 2 has the same structure as the RFID tag; after the temperature probe 2 is placed at a position where the temperature is abnormal, the active coil module is aligned with the passive coil module 2, thereby wirelessly powering the temperature probe 2 and the sending module 2, the receiving module receives the electromagnetic signal emitted by the sending module 2 and converts it into a digital signal of the temperature value, the communication module sends the digital signal of the temperature value to the superior data processing system, which is suitable for positions with high temperature abnormalities, the RFID tag 2 and the RFID reader cooperate to position the temperature probe 2, facilitate the alignment of the active coil module with the passive coil module 2, and facilitate subsequent recovery.

[0014] Preferably, the temporary temperature monitoring module includes a temperature probe three, a power supply unit, a sending module three and an RFID tag three, the power supply unit, the sending module three and the RFID tag three are installed on the temperature probe three, the power supply unit supplies power to the temperature probe three and the sending module three, the sending module three has the same structure as the sending module, and the RFID tag three has the same structure as the RFID tag; after the temperature probe three is placed at a location where the temperature is abnormal, the power supply unit supplies power to the temperature probe three and the sending module three, the receiving module receives the electromagnetic signal emitted by the sending module three and converts it into a digital signal of the temperature value, the communication module sends the digital signal of the temperature value to the superior data processing system, which is suitable for locations with medium and low temperature temperature abnormalities, the RFID tag three and the RFID reader cooperate to locate the temperature probe three, which is convenient for subsequent recovery.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Temperature data is automatically collected during the regular inspection of the main body. Multiple thermistor sensors are temporarily powered by a wireless charging subsystem composed of multiple passive coil modules and active coil modules, eliminating traditional signal cables, avoiding monitoring failures caused by cable aging, and improving reliability. In addition, multiple thermistor sensors are installed at designated locations to ensure temperature monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the structure of the pan / tilt, main control unit, active coil module, receiving module and RFID reader; Figure 4 It is a schematic diagram of the structure of the thermal resistance sensor, the passive coil module, the transmission module and the RFID tag; Figure 5 is a schematic diagram of the structure of the temporary temperature monitoring module in Example 3; Figure 6 is a schematic diagram of the structure of the temporary temperature monitoring module in Example 4; Figure 7 It is a schematic diagram of the axonometric structure of the temporary temperature monitoring module and the retractable arm; Figure 8 It is a schematic diagram of the structure of the temporary temperature monitoring module and the retractable arm; Fig. 9 It is a structural schematic diagram of the state of the retractable arm extending to take and place the temporary temperature monitoring module; Fig.10 is a schematic diagram of the structure of the clamping assembly; Fig.11It is a schematic diagram of the structure of the disassembled state of the clamping assembly; Fig.12 It is a structural schematic diagram of the retractable arm of the present invention when it is extended to take in and place a temporary temperature monitoring module.

[0017] Markings in the accompanying drawings: 1. main body; 2. chassis; 3. pan / tilt; 4. main control unit; 5. active coil module; 6. thermal resistor sensor; 7. passive coil module; 8. receiving module; 9. sending module; 10. RFID reader; 11. RFID tag; 12. infrared camera; 13. obstacle avoidance radar; 14. temperature probe; 15. temperature probe 2; 16. passive coil module 2; 17. sending module 2; 18. RFID tag 2; 19. temperature probe 3; 20. power supply unit; 21. sending module 3; 22. RFID tag 3; 24. slide rail; 25. telescopic arm; 26. push cylinder; 27. articulated arm; 28. servo motor; 29. ​​end rod; 30. clamping block; 31. clamping claw; 32. shaft rod; 33. servo motor 2; 34. cam; 35. slide rail 2; 36. rack; 37. servo motor 3; 38. gear. DETAILED DESCRIPTION

[0018] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] Example 1 like Figures 1 to 4As shown, a power plant thermal resistor intelligent front-end acquisition system includes a main body 1 and a chassis 2, the main body 1 is installed on the chassis 2; it also includes a pan head 3, a main control unit 4, an active coil module 5, a plurality of thermal resistor sensors 6 and a plurality of passive coil modules 7, a communication module and a primary processing module are installed inside the main body 1, the communication module is communicatively connected with a superior data processing system, the pan head 3 is installed on the main body 1, the main control unit 4 is installed on the rotating end of the pan head 3, the active coil module 5 is installed at the front end of the main control unit 4, a plurality of thermal resistor sensors 6 are respectively installed at designated positions of the power plant, and the passive coil module 7 is installed on the plurality of thermal resistor sensors 6, the passive coil module 7 includes a coil and a circuit module, the circuit module includes a voltage stabilizing circuit, the active coil module 5 cooperates with the passive coil module 7 to wirelessly power the thermal resistor sensor 6 so that the thermal resistor sensor 6 generates corresponding electrical signals at different temperatures, and the primary processing module of the main body 1 receives the electrical signals generated by the thermal resistor sensor 6 and converts them into temperature The temperature value is sent to the upper data processing system through the communication module; the primary processing module includes a receiving module 8 and multiple sending modules 9, the pan / tilt 3 is installed on the main body 1, the receiving module 8 is installed on the main body 1 through the pan / tilt 3, and the multiple sending modules 9 are respectively installed on multiple thermal resistor sensors 6, the sending module 9 includes an antenna and a current detection circuit, and the multiple passive coil modules 7 respectively power the multiple sending modules 9 through the circuit module, and the multiple sending modules 9 respectively detect the current passing through the multiple thermal resistor sensors 6 through the current detection circuit and amplify and then send electromagnetic signals through the antenna, and the receiving module 8 is used to receive the electromagnetic signal and convert the electromagnetic signal into a digital signal of the temperature value; it also includes multiple RFID readers 10 and RFID tags 11, the RFID reader 10 is installed on the pan / tilt 3, and the multiple RFID tags 11 are respectively installed on the multiple thermal resistor sensors 6, and the RFID reader 10 and the RFID tag 11 cooperate to point the main body 1.

[0020] During operation, multiple thermal resistor sensors 6 are installed at designated positions of power generation equipment and corresponding pipelines in the power plant. The chassis 2 regularly drives the main body 1 to move along the set inspection route in the power plant. The RFID reader 10 transmits a signal. When the RFID tag 11 enters the signal range of the RFID reader 10, an induction signal is generated. After the RFID reader 10 receives the induction signal, the chassis 2 stops. At this time, the main body 1 reaches the calibration position, and the pan / tilt 3 drives the main control unit 4 to rotate. When the RFID reader 10 receives the strongest induction signal, the main control unit 4 faces the thermal resistor sensor 6, and the active coil module 5 is aligned with the passive coil module 7. The active coil module 5 is energized to generate a changing magnetic field. The coil of the passive coil module 7 senses the changing magnetic field to generate a voltage. After being stabilized by the voltage stabilizing circuit, the voltage acts on the thermal resistor sensor 6 to generate a current. Since the thermal resistor sensor 6 has different resistance values ​​at different temperatures, The current acting on the thermistor sensor 6 by the voltage is also different. When the active coil module 5 is aligned with the passive coil module 7, wireless power is supplied. After the passive coil module 7 generates voltage, it supplies power to the thermistor sensor 6 and the sending module 9 respectively through the voltage stabilizing circuit, so that the thermistor sensor 6 generates current. The sending module 9 detects the magnitude of the current and sends an electromagnetic signal through the antenna. The receiving module 8 receives the electromagnetic signal and converts it into a digital signal of the temperature value. The communication module sends the digital signal of the temperature value to the superior data processing system. Compared with the prior art, the temperature data is automatically collected during the regular inspection of the main body 1. The multiple thermistor sensors 6 are temporarily powered by the wireless charging subsystem composed of multiple passive coil modules 7 and the active coil module 5, which eliminates the traditional signal cable, avoids monitoring failure caused by cable aging, and improves reliability. In addition, the multiple thermistor sensors 6 are installed at the specified position, and the temperature monitoring accuracy is guaranteed.

[0021] Example 2 like Figures 5 to 12As shown, on the basis of Example 1, it also includes an infrared camera 12, the infrared camera 12 is installed on the pan / tilt 3, and the infrared camera 12 is parallel to the main control unit 4; it also includes an obstacle avoidance radar 13, four obstacle avoidance radars 13 are arranged, and the obstacle avoidance radars 13 are installed on the four side walls of the main body 1; it also includes a plurality of temperature probes 14, and the temperature probes 14 are arranged on the diagonals of the four obstacle avoidance radars 13; it also includes a temporary temperature monitoring module and a retractable arm, the temporary temperature monitoring module is stored in the storage bin of the main body 1, and the retractable arm is used to put the temporary temperature monitoring module to the abnormal temperature position and recover it, and the retractable arm includes The slide rail 24, the telescopic arm 25, the push cylinder 26, the multiple articulated arms 27, the multiple servo motors 28, the end rod 29 and the clamping assembly, the slide rail 24 is installed in the storage bin of the main body 1, the telescopic arm 25 is slidably installed on the slide rail 24 through a slider, one end of the push cylinder 26 is connected to the telescopic arm 25, and the other end of the push cylinder 26 is connected to the main body 1, the multiple articulated arms 27 are hinged in sequence head to tail, the outer end of the first passive coil module 7 is hinged to the outer end of the telescopic arm 25, and the outer end of the last passive coil module 7 is hinged to one end of the end rod 29, and the multiple servo motors 28 are respectively installed on the telescopic arms 25 and the telescopic arms 25. and multiple articulated arms 27, the output shafts of multiple servo motors 28 are respectively connected to the multiple articulated arms 27 and the end rods 29, and the other end of the end rods 29 is installed with a clamping assembly, which is used to clamp the temporary temperature monitoring module; the clamping assembly includes a clamping block 30, two clamping jaws 31, two shafts 32, a servo motor 2 33, a cam 34, a slide rail 2 35, a rack 36, a servo motor 37 and a gear 38, the two clamping jaws 31 are relatively arranged below the clamping block 30, the middle parts of the two clamping jaws 31 are respectively hinged to the lower part of the clamping block 30 through two shafts 32, and the two clamping jaws The lower part of 31 is a clamping claw, and the upper parts of the two clamping claws 31 are both provided with sliding grooves. The servo motor 2 33 is installed in the middle of the lower end surface of the clamping block 30, and the output shaft of the servo motor 2 33 is installed with a cam 34, and the cam 34 is slidably connected with the sliding grooves of the two clamping claws 31. The slide rail 2 35 is installed on the end rod 29, and the slide rail 2 35 is arranged vertically with the end rod 29. The side wall of the slide rail 2 35 is installed with a rack 36, and the clamping block 30 is slidably installed on the end rod 29. The servo motor 3 37 is installed on the clamping block 30, and the output shaft of the servo motor 37 is concentrically installed with a gear 38, and the gear 38 is meshed with the rack 36.

[0022] Four obstacle avoidance radars 13 scan and record obstacles on the inspection route of the main body 1 to avoid collisions, and mark new obstacles, and send the new obstacles to the superior data processing system through the communication module to improve the safety of the inspection. The infrared camera 12 detects the ambient temperature on the inspection route, and sends the location of abnormal temperature to the superior data processing system through the communication module. Multiple temperature probes 14 are used to detect the temperature around the main body 1. When the temperature on one side of the main body 1 is found to be abnormal, the pan / tilt 3 drives the infrared camera 12 to rotate so that the infrared camera 12 faces the direction of the abnormal temperature, and the infrared camera 12 locates the location of the abnormal temperature. Multiple servo motors 28 drive multiple articulated arms 27 and end rods 29 to rotate around their hinge axes respectively, thereby folding and storing the multiple articulated arms 27 and end rods 29, so that the end rods 29 drive the clamping assembly to extend into the storage bin of the main body 1 to clamp the temporary temperature monitoring module, and the piston rod of the push cylinder 26 extends to push the telescopic arm 25 to move along the slide rail 24, thereby driving the clamping assembly Move in the storage bin and select to clamp the specified temporary temperature monitoring module. Multiple servo motors 28 drive multiple articulated arms 27 and end rods 29 to rotate around their hinge axes respectively, so as to unfold the multiple articulated arms 27 and end rods 29 and place the temporary temperature monitoring module at the abnormal temperature position. By setting the number of articulated arms 27, the temporary temperature monitoring module can be placed at different positions. Gear 38 drives servo motor three 37 to rotate. Servo motor three 37 engages rack 36 to drive clamping block 30 to move along slide rail two 35, so that clamping block 30 moves to above the specified temporary temperature monitoring module. Servo motor two 33 drives cam 34 to rotate, so that two clamping jaws 31 rotate around two shafts 32 respectively, so that the lower clamping jaws of the two clamping jaws 31 close to clamp the two sides of the temporary temperature monitoring module. When the temporary temperature monitoring module reaches the abnormal temperature position, servo motor two 33 drives cam 34 to rotate, so that the lower clamping jaws of the two clamping jaws 31 open to release the temporary temperature monitoring module, and the clamping is stable and reliable.

[0023] Example 3 like Figure 5 As shown, on the basis of Example 2, the temporary temperature monitoring module includes a temperature probe 15, a passive coil module 16, a sending module 17 and an RFID tag 18. The passive coil module 16, the sending module 17 and the RFID tag 18 are installed on the temperature probe 15. The passive coil module 16 cooperates with the active coil module 5 to power the temperature probe 15 and the sending module 17. The passive coil module 16 has the same structure as the passive coil module 7, the sending module 17 has the same structure as the sending module 9, and the RFID tag 18 has the same structure as the RFID tag 11.

[0024] After the temperature probe 15 is placed at the position of abnormal temperature, the active coil module 5 is aligned with the passive coil module 16, so as to wirelessly power the temperature probe 15 and the sending module 17. The receiving module 8 receives the electromagnetic signal emitted by the sending module 17 and converts it into a digital signal of the temperature value. The communication module sends the digital signal of the temperature value to the superior data processing system, which is suitable for the position of high temperature abnormality. The RFID tag 18 and the RFID reader 10 cooperate to locate the temperature probe 15, facilitate the alignment of the active coil module 5 and the passive coil module 16, and facilitate subsequent recovery.

[0025] Example 4 like Figure 6 As shown, based on Example 2, the temporary temperature monitoring module includes a temperature probe 3 19, a power supply unit 20, a sending module 3 21 and an RFID tag 3 22. The power supply unit 20, the sending module 3 21 and the RFID tag 3 22 are installed on the temperature probe 3 19. The power supply unit 20 supplies power to the temperature probe 3 19 and the sending module 3 21. The sending module 3 21 has the same structure as the sending module 9, and the RFID tag 3 22 has the same structure as the RFID tag 11.

[0026] After the temperature probe three 19 is placed at the location of temperature abnormality, the power supply unit 20 supplies power to the temperature probe three 19 and the sending module three 21, the receiving module 8 receives the electromagnetic signal emitted by the sending module three 21 and converts it into a digital signal of the temperature value, and the communication module sends the digital signal of the temperature value to the superior data processing system, which is suitable for locations with medium and low temperature temperature abnormalities. The RFID tag three 22 and the RFID reader 10 cooperate to locate the temperature probe three 19 to facilitate subsequent recovery.

[0027] like Figures 1 to 12As shown, a power plant thermal resistor intelligent front-end acquisition system of the present invention, when working, first, multiple thermal resistor sensors 6 are installed at designated positions of power generation equipment and corresponding pipelines of the power plant, and the chassis 2 regularly drives the main body 1 to move along the set inspection route in the power plant, and then four obstacle avoidance radars 13 scan and record obstacles on the inspection route of the main body 1 to avoid collision, and when the RFID tag 11 enters the signal range of the RFID reader 10, an induction signal is generated, and the chassis 2 stops after the RFID reader 10 receives the induction signal. At this time, the main body 1 reaches the corresponding marking point, and then the pan / tilt 3 drives the main control unit 4 to rotate, so that the active coil module 5 faces the passive coil module 7 and is aligned, and the active coil module 5 is energized to generate a changing magnetic field, and the coil of the passive coil module 7 senses the changing magnetic field to generate electricity The voltage is applied to the thermistor sensor 6 to generate a current after being stabilized by the voltage stabilizing circuit. Since the resistance value of the thermistor sensor 6 is different at different temperatures, the current generated by the voltage applied to the thermistor sensor 6 is also different. The primary processing module receives the electrical signal generated by the current and converts it into a digital signal of the temperature value. The communication module sends the digital signal of the temperature value to the upper-level data processing system. Finally, during the inspection, multiple temperature probes 14 detect the temperature around the main body 1. When the temperature on one side of the main body 1 is found to be abnormal, the pan / tilt 3 drives the infrared camera 12 to rotate so that the infrared camera 12 faces the direction of the abnormal temperature. The infrared camera 12 locates the position of the abnormal temperature. The retractable arm drops a temporary temperature monitoring module to the position of the abnormal temperature. The temporary temperature monitoring module performs temporary temperature detection on the position of the abnormal temperature.

[0028] The main functions achieved by the present invention are: 1. Automatically collect temperature data during the inspection process and send it to the superior data processing system; 2. The thermal resistance temperature sensors on the power plant equipment are temporarily powered by the wireless charging subsystem, eliminating the traditional signal cables, avoiding monitoring failures caused by cable aging, and improving reliability; 3. The thermal resistance temperature sensor is installed at the designated position, and the temperature monitoring accuracy is guaranteed; 4. Able to collect temperature of the environment around the inspection route and find locations with abnormal temperatures; 5. It can automatically deploy and recover temporary temperature monitoring modules at locations with abnormal temperatures, and perform temporary temperature collection at locations with abnormal temperatures.

[0029] The installation method, connection method or setting method of the intelligent front-end acquisition system of thermal resistor in a power plant of the present invention are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; the main body 1, chassis 2, pan / tilt 3, active coil module 5, thermal resistor sensor 6, passive coil module 7, receiving module 8, sending module 9, RFID reader 10, RFID tag 11, infrared camera 12, obstacle avoidance radar 13, temperature probe 14, temperature probe 2 15, passive coil module 2 16, sending module 2 17, RFID tag 2 18, temperature probe 3 19, power supply unit 20, sending module 3 21, RFID tag 3 22, slide rail 24, push cylinder 26, servo motor 28, clamp 31, shaft 32, servo motor 2 33, cam 34, slide rail 2 35, rack 36, servo motor 3 37, gear 38 of the intelligent front-end acquisition system of thermal resistor in a power plant of the present invention are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A power plant thermal resistor intelligent front-end data acquisition system, comprising a main body (1) and a chassis (2), wherein the main body (1) is mounted on the chassis (2); characterized in that: The invention also comprises a pan-tilt platform (3), a main control unit (4), an active coil module (5), a plurality of thermal resistor sensors (6) and a plurality of passive coil modules (7). A communication module and a primary processing module are installed inside the main body (1). The communication module is connected to a superior data processing system for communication. The pan-tilt platform (3) is installed on the main body (1). The main control unit (4) is installed on the rotating end of the pan-tilt platform (3). The active coil module (5) is installed at the front end of the main control unit (4). The plurality of thermal resistor sensors (6) are respectively installed at designated positions of the power plant. The plurality of thermal resistor sensors (6) are all installed with passive coil modules (7). The passive coil modules (7) include coils and circuit modules. The circuit modules include a voltage stabilizing circuit. The active coil modules (5) cooperate with the passive coil modules (7) to wirelessly power the thermal resistor sensors (6) so that the thermal resistor sensors (6) generate corresponding electrical signals at different temperatures. The primary processing module of the main body (1) receives the electrical signals generated by the thermal resistor sensors (6) and converts them into temperature values. The temperature values ​​are sent to the superior data processing system through the communication module.

2. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 1, characterized in that: The primary processing module comprises a receiving module (8) and a plurality of sending modules (9); the pan / tilt (3) is mounted on the main body (1); the receiving module (8) is mounted on the main body (1) via the pan / tilt (3); the plurality of sending modules (9) are respectively mounted on the plurality of thermal resistance sensors (6); the sending modules (9) comprise an antenna and a current detection circuit; the plurality of passive coil modules (7) respectively supply power to the plurality of sending modules (9) via the circuit module; the plurality of sending modules (9) respectively detect the current passing through the plurality of thermal resistance sensors (6) via the current detection circuit and amplify and then send electromagnetic signals via the antenna; the receiving module (8) is used to receive the electromagnetic signals and convert the electromagnetic signals into digital signals of temperature values.

3. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 1, characterized in that: It also includes a plurality of RFID readers (10) and RFID tags (11), wherein the RFID reader (10) is mounted on the pan-tilt head (3), and the plurality of RFID tags (11) are respectively mounted on the plurality of thermal resistance sensors (6), and the RFID reader (10) and the RFID tags (11) cooperate to locate the main body (1).

4. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 1, characterized in that: It also includes an infrared camera (12), which is mounted on the pan-tilt platform (3), and the infrared camera (12) is parallel to the main control unit (4).

5. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 1, characterized in that: It also includes an obstacle avoidance radar (13), four obstacle avoidance radars (13) are arranged, and the obstacle avoidance radars (13) are installed on the four side walls of the main body (1).

6. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 5, characterized in that: It also includes a plurality of temperature probes (14), wherein the temperature probes (14) are arranged at the diagonals of the four obstacle avoidance radars (13).

7. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 6, characterized in that: The invention also includes a temporary temperature monitoring module and a retractable arm. The temporary temperature monitoring module is stored in a storage bin of the main body (1). The retractable arm is used to place the temporary temperature monitoring module at a temperature abnormality position and retract it. The retractable arm includes a slide rail (24), a telescopic arm (25), a push cylinder (26), a plurality of articulated arms (27), a plurality of servo motors (28), an end rod (29) and a clamping assembly. The slide rail (24) is installed in the storage bin of the main body (1). The telescopic arm (25) is slidably installed on the slide rail (24) through a slider. One end of the push cylinder (26) is connected to the telescopic arm (25). The push cylinder (26) ) is connected to the main body (1), a plurality of articulated arms (27) are hinged end to end in sequence, an outer end of a first passive coil module (7) is hinged to an outer end of a telescopic arm (25), an outer end of a last passive coil module (7) is hinged to one end of an end rod (29), a plurality of servo motors (28) are respectively mounted on the telescopic arm (25) and the plurality of articulated arms (27), output shafts of the plurality of servo motors (28) are respectively connected to the plurality of articulated arms (27) and the end rod (29), a clamping assembly is mounted on the other end of the end rod (29), and the clamping assembly is used to clamp a temporary temperature monitoring module.

8. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 7, characterized in that: The clamping assembly comprises a clamping block (30), two clamping claws (31), two shafts (32), a servo motor 2 (33), a cam (34), a slide rail 2 (35), a rack (36), a servo motor 3 (37) and a gear (38). The two clamping claws (31) are arranged relatively below the clamping block (30). The middle parts of the two clamping claws (31) are hinged to the lower part of the clamping block (30) through the two shafts (32). The lower parts of the two clamping claws (31) are clamping claws. The upper parts of the two clamping claws (31) are both provided with slide grooves. The servo motor 2 (33) is installed on the clamping block ( A cam (34) is installed on the middle part of the lower end surface of the servo motor 2 (30), and the cam (34) is slidably connected to the slide grooves of the two clamping claws (31). The slide rail 2 (35) is installed on the end rod (29), and the slide rail 2 (35) and the end rod (29) are arranged vertically. A rack (36) is installed on the side wall of the slide rail 2 (35), and the clamping block (30) is slidably installed on the end rod (29). The servo motor 3 (37) is installed on the clamping block (30), and the output shaft of the servo motor 3 (37) is concentrically installed with a gear (38), and the gear (38) is meshed with the rack (36).

9. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 7, characterized in that: The temporary temperature monitoring module comprises a second temperature probe (15), a second passive coil module (16), a second sending module (17) and a second RFID tag (18). The second passive coil module (16), the second sending module (17) and the second RFID tag (18) are mounted on the second temperature probe (15). The second passive coil module (16) cooperates with the active coil module (5) to supply power to the second temperature probe (15) and the second sending module (17). The second passive coil module (16) has the same structure as the passive coil module (7). The second sending module (17) has the same structure as the sending module (9). The second RFID tag (18) has the same structure as the RFID tag (11).

10. The intelligent front-end data acquisition system for thermal resistors in power plants according to claim 7, characterized in that: The temporary temperature monitoring module comprises a temperature probe 3 (19), a power supply unit (20), a sending module 3 (21) and an RFID tag 3 (22). The power supply unit (20), the sending module 3 (21) and the RFID tag 3 (22) are mounted on the temperature probe 3 (19). The power supply unit (20) supplies power to the temperature probe 3 (19) and the sending module 3 (21). The sending module 3 (21) has the same structure as the sending module (9), and the RFID tag 3 (22) has the same structure as the RFID tag (11).

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