Acoustic imaging component and inspection device

Abstract

The present invention belongs to the field of acoustic wave positioning technology, and in particular, relates to an acoustic imaging component and inspection device, including an arc-shaped fixed sound insulation column, a semi-annular sound insulation plate slidably sleeved on the outside of the arc-shaped fixed sound insulation column, and an imaging control module, wherein the arc-shaped fixed sound insulation column is equipped with a driving mechanism for driving the semi-annular plate to rotate, and a mounting groove is provided at the bottom of the arc-shaped fixed sound insulation column, and an acoustic wave detection mechanism is installed inside the mounting groove, and the acoustic wave detection mechanism is communicatively connected with the imaging control module. The present invention adopts a contact wrapping acoustic detection method, which can isolate external acoustic wave interference as much as possible, and reduce the impact of the acoustic wave attenuation of the cable fault, improve the accuracy of the acoustic wave positioning of the cable fault, and can simultaneously perform abnormal temperature detection during the acoustic wave detection process, improve the comprehensiveness of the cable fault positioning, and at the same time, can assist personnel in controlling the drone, and facilitate inspection.

Description

Technical Field

[0001] The invention belongs to the technical field of acoustic wave positioning, and in particular relates to an acoustic imaging component and a patrol inspection device. Background Art

[0002] In today's complex power system, line faults occur frequently. Traditional detection methods have problems of low efficiency and poor accuracy. Acoustic imaging technology uses the principles of sound propagation and reception to quickly locate line faults, effectively overcome traditional limitations, improve detection efficiency and accuracy, and ensure stable line operation. It has become an important innovative means in the field of line fault detection.

[0003] At present, when the acoustic imaging component is working, it uses the characteristics of abnormal sound waves generated by line faults (for example, discharge sound waves are generated at the line fault point) and converts the abnormal sound waves into image information for the staff to quickly locate the fault point of the line, such as the acoustic imaging instrument component and inspection device disclosed in patent publication number CN220795451U;

[0004] When the acoustic imaging component detects cable faults, due to the use of non-contact measurement methods, external environmental noise (such as traffic noise, etc.) may interfere with it. Secondly, when the distance is far, the sound waves emitted by the cable fault point are attenuated and reflected by obstacles such as air and trees, which may cause the acoustic imaging component to be unable to accurately detect and locate the fault point of the cable. Furthermore, when using the acoustic imaging component to detect faults in high-altitude cables, in order to improve the convenience and flexibility of use, a matching drone is usually used to move it above the high-altitude cable for fault location work. However, although the drone can make the acoustic imaging component as close as possible to the cable to be inspected, it still cannot block the external environmental noise, and the noise generated by its own work will also interfere with the acoustic imaging component, affecting the accuracy of locating the cable fault point. Summary of the invention

[0005] The object of the present invention is to provide an acoustic imaging component and an inspection device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an acoustic imaging component, comprising an arc-shaped fixed sound insulation column, a semi-annular sound insulation plate slidably sleeved on the outside of the arc-shaped fixed sound insulation column, and an imaging control module, the arc-shaped fixed sound insulation column is equipped with a driving mechanism for driving the semi-annular plate to rotate, a mounting groove is provided at the bottom of the arc-shaped fixed sound insulation column, and a sound wave detection mechanism is installed inside the mounting groove, and the sound wave detection mechanism is communicatively connected with the imaging control module;

[0007] A storage groove is provided on the side wall of the semi-annular sound insulation board close to the arc-shaped fixed sound insulation column, and a sound insulation elastic membrane is fixedly installed on the inner wall of the storage groove, and a sound wave reflecting membrane is bonded to the outer wall of the sound insulation elastic membrane. An air supply mechanism is installed at one end of the semi-annular sound insulation board, and an over-temperature detection component is installed on the side wall of the sound insulation elastic membrane close to the semi-annular sound insulation board.

[0008] Preferably, the driving mechanism includes fixed plates fixedly mounted on both ends of the side walls of the arc-shaped fixed sound insulation column, and a semi-annular sound insulation plate is arranged between the fixed plates, a motor driving assembly is commonly mounted on the two fixed plates, and the motor driving assembly is transmission-connected to two moving gears, the side wall of the semi-annular sound insulation plate away from the arc-shaped fixed sound insulation column is fixedly connected to two arc-shaped gear bars, and the two moving gears are meshed with the arc-shaped gear bar on the same side, and the motor driving assembly is electrically connected to the sound wave detection mechanism.

[0009] Preferably, the sound wave detection mechanism includes a signal processor, a first data processor, a control mainboard, a power supply, a wireless signal transceiver and a microphone assembly distributed in an array, the signal processor, the first data processor, the control mainboard and the power supply are all installed inside a mounting groove, a partition is fixedly installed inside the mounting groove, and the microphone assembly is installed at the bottom of the partition, the microphone assembly is electrically connected to the signal processor, the signal processor is electrically connected to the control mainboard through the first data processor, the control mainboard is electrically connected to the power supply, a fixing groove is provided on the side wall of the arc-shaped fixed sound insulation column away from the mounting groove, and the wireless signal transceiver is installed in the fixing groove, the control mainboard is communicatively connected to the imaging control module through the wireless signal transceiver, and the motor drive assembly is electrically connected to the control mainboard.

[0010] Preferably, the air supply mechanism includes an air pump fixedly mounted on one end of a semi-circular sound insulation plate, an air inlet groove is provided on the groove wall of the storage groove close to the air pump, and the output end of the air pump is connected to the air inlet groove, and the air pump is electrically connected to the control main board.

[0011] Preferably, the over-temperature detection component includes a plurality of thermally conductive insulating pads fixedly mounted on the side wall of the sound insulation elastic membrane away from the sound wave reflection membrane, and a thermistor block is fixedly inserted into the end face of each thermally conductive insulating pad, and a second data processor is fixedly mounted inside the mounting groove, each of the thermistor blocks is connected in series with the second data processor, and the second data processor is electrically connected to the control main board.

[0012] Preferably, the groove wall of the air inlet groove is provided with a plurality of exhaust holes, and the aperture of the air inlet end of each exhaust hole is larger than the aperture of the air outlet end, a normally closed solenoid valve is installed inside each exhaust hole, and each normally closed solenoid valve is electrically connected to the control main board.

[0013] A patrol inspection device for an acoustic imaging component comprises a drone, a suspension mechanism is installed at the bottom of the drone, the drone is connected to an arc-shaped fixed sound insulation column through the suspension mechanism, and the drone is communicatively connected to an imaging control module.

[0014] Preferably, the suspension mechanism includes a mounting base detachably arranged at the bottom of the drone, a circular cavity is opened inside the mounting base, and an electric winding assembly is installed in the circular cavity, the electric winding assembly has two slings for winding and reeling, and the two slings slide through the lower cavity wall of the circular cavity at one end away from the electric winding assembly, and the two slings are installed with a universal trigger assembly at one end located outside the circular cavity, and the two universal trigger assemblies are connected to the arc-shaped fixed sound insulation column, and the electric winding assembly is electrically connected to the control unit of the drone.

[0015] Preferably, the two universal trigger assemblies each include an insulating I-shaped rod fixedly mounted on one end of the sling located outside the circular cavity, a barrel is provided on the outer sliding sleeve of the insulating I-shaped rod, and a spring is fixedly provided between the inner wall of the barrel and the insulating I-shaped rod, a steel ball is fixedly mounted on the bottom of the barrel, and a connecting ball seat is rotatably provided on the outer side of the steel ball, the connecting ball seat is detachably connected to the arc-shaped fixed sound insulation column, and the connecting ball seats are respectively arranged on both sides of the semi-annular plate, an insulating rod coaxial with the insulating I-shaped rod is fixedly mounted inside the barrel, and a conductive sleeve is fixedly sleeved on the rod wall of the insulating rod, a circular groove matching the conductive sleeve is opened at the bottom of the insulating I-shaped rod, a conductive ring matching the conductive sleeve is fixedly mounted at the notch of the circular groove, and the conductive ring and the conductive sleeve are electrically connected to the control unit of the drone.

[0016] Compared with the existing technology, the advantages of an acoustic imaging component and a patrol inspection device are:

[0017] 1. Through the cooperation of the arc-shaped fixed sound insulation column, semi-circular sound insulation board, imaging control module, driving mechanism, installation groove and sound wave detection mechanism, the abnormal sound waves generated by the cable fault can be detected, which is convenient for the staff to quickly locate the fault point of the cable. Through the cooperation of the storage groove, sound insulation elastic membrane, sound wave reflection membrane and air supply mechanism, the cable can be wrapped to isolate the interference of external sound waves as much as possible. The contact detection method can reduce the impact of the fault sound wave attenuation and improve the accuracy of the cable fault sound wave positioning.

[0018] 2. By setting up the over-temperature detection component, the temperature of the cable can be detected simultaneously when the cable is subjected to acoustic wave detection, so that personnel can promptly discover abnormal temperature rise of the cable, thereby improving the comprehensiveness of cable fault detection.

[0019] 3. The drone can be used to locate acoustic faults on high-altitude cables. The suspension mechanism can help personnel control the drone when it is carrying the acoustic imaging component, thereby improving the smoothness of the movement of the acoustic imaging component and the drone and reducing the probability of damage to the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an acoustic imaging component and a patrol inspection device provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the connection structure of a semi-annular sound insulation board and an arc-shaped fixed sound insulation column of an acoustic imaging component and an inspection device provided by the present invention;

[0022] Figure 3 It is a schematic diagram of an acoustic imaging assembly and a semi-annular soundproof plate of an inspection device provided by the present invention after rotation;

[0023] Figure 4 It is a schematic diagram of a top view structure of a semi-annular sound insulation board and an arc-shaped fixed sound insulation column of an acoustic imaging component and an inspection device provided by the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of an acoustic imaging assembly and an arc-shaped fixed sound insulation column of an inspection device provided by the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of a semi-annular sound insulation board of an acoustic imaging component and an inspection device provided by the present invention;

[0026] Figure 7 The present invention provides an acoustic imaging component and a patrol inspection device Figure 6 A magnified view of the structure of part A;

[0027] Figure 8 It is a structural schematic diagram of an acoustic imaging component and a suspension mechanism of an inspection device provided by the present invention;

[0028] Fig. 9 The present invention provides an acoustic imaging component and a patrol inspection device Figure 8 A magnified structural diagram of part B;

[0029] Fig.10 The present invention provides an acoustic imaging component and an imaging control module of an inspection device, a control mainboard, and a schematic block diagram of the connection between the drone.

[0030] In the figure: 1 arc-shaped fixed sound insulation column, 2 semi-circular sound insulation board, 3 imaging control module, 4 driving mechanism, 41 fixed plate, 42 motor driving assembly, 43 moving gear, 44 arc-shaped gear bar, 5 mounting groove, 6 sound wave detection mechanism, 61 signal processor, 62 first data processor, 63 control main board, 64 power supply, 65 wireless signal transceiver, 66 microphone assembly, 67 partition, 68 fixed groove, 7 storage groove, 8 sound insulation elastic membrane, 9 sound wave reflection membrane, 10 air supply mechanism, 101 air pump, 10 2 air inlet groove, 11 over-temperature detection component, 111 thermal insulation pad, 112 thermistor block, 113 second data processor, 12 exhaust hole, 13 normally closed solenoid valve, 14 drone, 15 suspension mechanism, 151 mounting seat, 152 circular cavity, 153 electric winding component, 154 sling, 16 universal trigger component, 161 insulating I-shaped rod, 162 barrel, 163 spring, 164 steel ball, 165 connecting ball seat, 166 insulating rod, 167 conductive sleeve, 168 circular groove, 169 conductive ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] like Figure 1-Figure 10 As shown, an acoustic imaging component includes an arc-shaped fixed sound insulation column 1, a semi-annular sound insulation plate 2 slidably sleeved on the outer side of the arc-shaped fixed sound insulation column 1, and an imaging control module 3. The arc-shaped fixed sound insulation column 1 is equipped with a driving mechanism 4 for driving the semi-annular plate to rotate. The driving mechanism 4 includes fixed plates 41 fixedly installed at both ends of the side walls of the arc-shaped fixed sound insulation column 1, and the semi-annular sound insulation plate 2 is arranged between the fixed plates 41. The two fixed plates 41 are jointly equipped with a motor driving component 42, and the motor driving component 42 is transmission-connected to two moving gears 43. The side wall of the semi-annular sound insulation plate 2 away from the arc-shaped fixed sound insulation column 1 is fixedly connected to two arc-shaped gear bars 44, and the two moving gears 43 are meshed with the arc-shaped gear bars 44 on the same side. The motor driving component 42 is electrically connected to the sound wave detection mechanism 6. The motor driving component 42 includes components such as a motor, a rotating shaft, and a bearing. The motor drives the rotating shaft to rotate, thereby rotating the two moving gears 43.

[0033] A mounting groove 5 is provided at the bottom of the arc-shaped fixed sound insulation column 1, and an acoustic wave detection mechanism 6 is installed inside the mounting groove 5. The acoustic wave detection mechanism 6 is communicatively connected with the imaging control module 3. The acoustic wave detection mechanism 6 includes a signal processor 61, a first data processor 62, a control main board 63, a power supply 64, a wireless signal transceiver 65 and a microphone assembly 66 distributed in an array. The signal processor 61, the first data processor 62, the control main board 63 and the power supply 64 are all installed inside the mounting groove 5. A partition 67 is fixedly installed inside the mounting groove 5, and the microphone assembly 66 is installed at the bottom of the partition 67. The microphone assembly 66 is electrically connected to the signal processor 61. The signal processor 61 is electrically connected to the control main board 63 through the first data processor 62. The control main board 63 is electrically connected to the power supply 64. A fixed groove 68 is provided on the side wall of the arc-shaped fixed sound insulation column 1 away from the mounting groove 5, and the wireless signal transceiver 65 is communicatively connected to the imaging control module 3. The wireless signal transceiver 65 is installed in the fixed slot 68, the control mainboard 63 is connected to the imaging control module 3 through the wireless signal transceiver 65, the motor drive component 42 is electrically connected to the control mainboard 63, the microphone component 66 can convert the sound wave signal into an electrical signal, and transmit the converted electrical signal to the signal processor 61, and the signal processor 61 amplifies and filters the electrical signal, and transmits the processed electrical signal to the first data processor 62, the first data processor 62 converts the electrical signal into a digital signal and transmits it to the control mainboard 63, the control mainboard 63 calculates the intensity of the sound source and other information according to the processed sound digital signal, and generates an acoustic image, and then transmits the acoustic image information back to the imaging control module 3 through the wireless signal transceiver 65, and the display unit on the imaging control module 3 can display the acoustic image in real time, which is an existing mature technology, so it will not be described in detail here;

[0034] A storage groove 7 is provided on the side wall of the semi-annular sound insulation board 2 close to the arc-shaped fixed sound insulation column 1, and a sound insulation elastic membrane 8 is fixedly installed on the inner wall of the storage groove 7, and a sound wave reflecting membrane 9 is bonded to the outer wall of the sound insulation elastic membrane 8. An air supply mechanism 10 is installed at one end of the semi-annular sound insulation board 2. The air supply mechanism 10 includes an air pump 101 fixedly installed at one end of the semi-annular sound insulation board 2. An air intake groove 102 is provided on the groove wall of the storage groove 7 close to the air pump 101, and the output end of the air pump 101 is connected to the air intake groove 102. The air pump 101 is electrically connected to the control main board 63, and the maximum diameter of the air pump 101 is smaller than the thickness of the semi-annular sound insulation board 2.

[0035] An over-temperature detection component 11 is installed on the side wall of the sound insulation elastic membrane 8 close to the semi-circular sound insulation board 2. The sound insulation elastic membrane 8 has a certain elasticity. It can expand under the action of air pressure, and it can rebound after the high air pressure returns to normal pressure. When the semi-circular sound insulation board 2 rotates to the top of the arc-shaped fixed sound insulation column 1, the sound insulation elastic membrane 8 will be squeezed into the storage groove 7 under the blocking effect of the arc-shaped fixed sound insulation column 1. After the semi-circular sound insulation board 2 rotates to the bottom of the arc-shaped fixed sound insulation column 1, the sound insulation elastic membrane 8 will rebound again under the action of the sound insulation elastic membrane 8. The over-temperature detection component 11 includes a fixedly installed sound insulation elastic membrane 8 away from the sound wave reflection membrane 9 has a plurality of heat-conducting insulating pads 111 on one side wall, and the end face of each heat-conducting insulating pad 111 is fixedly plugged with a thermistor block 112, a second data processor 113 is fixedly installed inside the mounting groove 5, each thermistor block 112 is connected in series with the second data processor 113, and the second data processor 113 is electrically connected to the control main board 63, when the temperature of the thermistor block 112 rises, its own resistance decreases, the temperature range detected by the thermistor block 112 is -10°C to 200°C, and the second data processor 113 can convert the electrical signal of the circuit connected to the thermistor block 112 into a digital signal, and transmit it to the control main board 63.

[0036] The groove wall of the air inlet groove 102 is provided with a plurality of exhaust holes 12, and the aperture of the air inlet end of each exhaust hole 12 is larger than the aperture of the air outlet end, and a normally closed solenoid valve 13 is installed inside each exhaust hole 12, and each normally closed solenoid valve 13 is electrically connected to the control main board 63. By setting the aperture of the air inlet end of the exhaust hole 12 larger than the aperture of the air outlet end, the air flow velocity discharged through the exhaust hole 12 can be increased.

[0037] A patrol device for an acoustic imaging component includes a drone 14. A suspension mechanism 15 is installed at the bottom of the drone 14. The drone 14 is connected to an arc-shaped fixed sound insulation column 1 through the suspension mechanism 15. The drone 14 is communicatively connected to an imaging control module 3. A camera is installed at the bottom of the drone 14. The drone 14 has a communication module, a control module, etc. The camera can transmit the captured image to the imaging control module 3 in real time through the control module and the communication module.

[0038] The suspension mechanism 15 includes a mounting base 151 detachably arranged at the bottom of the UAV 14, a circular cavity 152 is opened inside the mounting base 151, and an electric winding assembly 153 is installed in the circular cavity 152. The electric winding assembly 153 has two slings 154 wound and rolled up, and one end of the two slings 154 away from the electric winding assembly 153 slides through the lower cavity wall of the circular cavity 152, and one end of the two slings 154 located outside the circular cavity 152 is installed with a universal trigger assembly 16, and the two universal trigger assemblies 16 are connected to the arc-shaped fixed sound insulation column 1, the electric winding assembly 153 is electrically connected to the control unit of the UAV 14, and the electric winding assembly 153 includes two winding wheels, a winding shaft, a motor, a bearing and other components. The motor can rotate the two winding wheels by driving the winding shaft to rotate, so that the slings 154 can be wound or released.

[0039] The two universal trigger assemblies 16 each include an insulating rod 161 fixedly mounted on one end of the sling 154 outside the circular cavity 152, a barrel 162 is provided on the outer sliding sleeve of the insulating rod 161, and a spring 163 is fixedly provided between the inner wall of the barrel 162 and the insulating rod 161, a steel ball 164 is fixedly installed on the bottom of the barrel 162, and a connecting ball seat 165 is rotatably provided on the outer side of the steel ball 164, the connecting ball seat 165 is detachably connected to the arc-shaped fixed sound insulation column 1, and the connecting ball seats 165 are respectively arranged on both sides of the semi-circular plate, and the inside of the barrel 162 is fixedly installed with a spring 163 connected to the arc-shaped fixed sound insulation column 1. The insulating rod 166 is coaxial with the insulating rod 161, and the rod wall of the insulating rod 166 is fixedly sleeved with a conductive sleeve 167. A circular groove 168 matching the conductive sleeve 167 is provided at the bottom of the insulating rod 161, and a conductive ring 169 matching the conductive sleeve 167 is fixedly installed at the notch of the circular groove 168. The conductive ring 169 and the conductive sleeve 167 are electrically connected to the control unit of the drone 14. Under the action of the steel ball 164 and the connecting ball seat 165, a certain displacement deviation can be made between the drone 14 and the arc-shaped fixed sound insulation column 1, thereby reducing the difficulty of controlling the drone 14.

[0040] The operating principle of the present invention is now described as follows: two connecting ball seats 165 are installed on the arc-shaped fixed sound insulation column 1, and the mounting seat 151 is installed at the bottom of the drone 14. Subsequently, the staff controls the drone 14 to start through the imaging control module 3, and remotely controls the drone 14 (a camera is installed at the bottom of the drone 14, and the camera can transmit image information to the imaging control module 3 through the control unit and communication unit of the drone 14) to move above the cable to be detected. After the drone 14 moves to the top of the cable to be detected, the staff sends a signal to the control unit of the drone 14 through the imaging control module 3. The first element sends a command to start the release of the electric winding assembly 153, and then the control unit of the drone 14 immediately controls the electric winding assembly 153 to work. At this time, the two slings 154 begin to unfold, and under the gravity of the suspension mechanism 15 and the arc-shaped fixed sound insulation column 1, the arc-shaped fixed sound insulation column 1 begins to move down until the operator sees the arc-shaped fixed sound insulation column 1 falling on the cable to be detected through the camera of the drone 14. The operator sends a stop command to the control unit of the drone 14 through the imaging control module 3. At this time, the control unit of the drone 14 immediately controls the electric winding assembly 153 to stop working;

[0041] Then, the staff sends a start command to the control mainboard 63 through the imaging control module 3, and the control mainboard 63 starts immediately and controls the motor drive assembly 42 to work for 5 seconds. At this time, the motor drive assembly 42 drives the semi-annular sound insulation board 2 to rotate 180° clockwise through the moving gear 43 and the arc-shaped gear bar 44, so that the semi-annular sound insulation board 2 rotates to the bottom of the arc-shaped fixed sound insulation column 1 (refer to Figure 3), at this time, the cable to be detected is between the arc-shaped fixed sound insulation column 1 and the semi-annular sound insulation board 2, and then the control main board 63 will control the air pump 101 to start working, and at the same time control the normally closed solenoid valve 13 inside each exhaust hole 12 to work regularly for 15 seconds. At this time, the air pump 101 can inhale the external air and transport it to the air inlet groove 102, and then discharge it through each exhaust hole 12. The discharged airflow will blow the cable to be detected. Under the action of the airflow, the dust and impurities on the surface of the cable to be detected can be removed as much as possible, and under the action of the airflow, the temperature of the surface of the cable to be detected can be reduced as much as possible. When the normally closed solenoid valve 13 finishes working regularly, the air transported to the inside of the air inlet groove 102 by the air pump 101 will be filled into the storage groove 7. When the sound insulation elastic membrane 8 is inflated under the action of air pressure, it can quickly expand and come into contact with the cable to be detected and the arc-shaped fixed insulating column, and fill the space between the arc-shaped fixed sound insulation column 1, the semi-annular sound insulation board 2 and the cable to be detected as much as possible. Under the effect of the sound insulation of the sound insulation elastic membrane 8, the arc-shaped fixed sound insulation column 1 and the semi-annular sound insulation board 2, the external noise can be blocked as much as possible. The sound emitted by the cable to be detected due to the fault will be reflected by the sound wave reflecting membrane 9 in the direction of the installation groove 5 after being transmitted to the sound wave reflecting membrane 9, so that the sound waves generated by the fault of the cable to be detected are transmitted in the direction of the installation groove 5 as much as possible. After the sound waves generated by the cable to be detected are transmitted into the installation groove 5, they will be received by the microphone components 66 distributed in an array. The sound wave will make the diaphragm of the microphone assembly 66 vibrate, and the diaphragm of the microphone assembly 66 drives the coil connected to it to move in the magnetic field, thereby generating an induced current, and then being able to convert the sound wave signal into an electrical signal. At the same time, the microphone assembly 66 transmits the converted electrical signal to the signal processor 61, and the signal processor 61 amplifies and filters the electrical signal, and transmits the processed electrical signal to the first data processor 62, and the first data processor 62 converts the electrical signal into a digital signal and transmits it to the control motherboard 63. The control motherboard 63 calculates the intensity of the sound source and other information based on the processed sound digital signal, and generates an acoustic image, and then transmits the acoustic image back to the imaging control module through the wireless signal transceiver 65. 3, the display unit on the imaging control module 3 can display the acoustic image in real time. At the same time, the imaging control module 3 receives the image information sent back by the camera of the drone 14, combines the acoustic image with the image information taken by the camera of the drone 14, and can know the point where the cable has a fault (if the sound wave generated by the cable due to the fault increases, such as discharge, the sound wave intensity of the acoustic image information produced by the control main board 63 will also increase, which is displayed by the color depth. For example, when the sound wave intensity is large, the color depth displayed on the imaging control module 3 is darker, and when the sound wave intensity is small, the color depth displayed on the imaging control module 3 is lighter, so that it is convenient for the staff to judge whether there is a fault point at the position of the cable to be detected);

[0042] Among them, after the control main board 63 starts the air pump 101 to work for 70 seconds, the control main board 63 controls the air pump 101 to stop working, and the control main board 63 simultaneously controls the power supply to the series circuit of the thermistor block 112 and the second data processor 113. When there is no abnormal temperature rise point at this position of the cable to be detected, the temperature at each thermistor block 112 is relatively low. At this time, the resistance of each thermistor block 112 is relatively high, so the current in the connection circuit between the thermistor block 112 and the second data processor 113 is small. On the contrary, if there is an abnormal temperature rise point at this position of the cable to be detected, the temperature of some thermistor blocks 112 is relatively high. At this time, the thermistor block 112 is relatively high. The current intensity of the connection loop between the thermistor block 112 and the second data processor 113 is relatively high, and the second data processor 113 can convert the current data of the series loop with the thermistor block 112 into a digital signal and transmit it to the control mainboard 63, and the control mainboard 63 can transmit the digital signal back to the imaging control module 3 through the wireless signal transceiver 65, and display it in digital form (for example, the temperature is 50°C). By checking the temperature digital, the staff can know whether there is an abnormal temperature rise phenomenon in the cable to be detected. By combining the acoustic wave positioning and the temperature positioning, the accuracy and comprehensiveness of the fault positioning of the cable to be detected can be further improved;

[0043] After the single position detection of the cable to be detected is completed, the control main board 63 controls the normally closed solenoid valves 13 inside each exhaust hole 12 to be energized, and at the same time sends a prompt signal to the imaging control module 3 through the wireless signal transceiver 65 to remind the staff that the detection work at this position of the cable to be detected is completed. At this time, the operator remotely controls the drone 14 through the imaging control module 3 to move along the cable, and controls the drone 14 to temporarily stop moving after moving to the next detection point. The interval between the two detection points is controlled by the staff, which is generally about 5 meters. When the drone 14 drives the entire device to move to the next detection point, the arc-shaped fixed sound insulation column 1 and the semi-annular sound insulation board 2 will move along the cable under the enclosure effect of the arc-shaped fixed sound insulation column 1 and the semi-annular sound insulation board 2, and the staff controls the drone 14 to move out When excessive deviation occurs or the speed is too fast, a pulling force will be generated between the UAV 14 and the arc-shaped fixed sound insulation column 1. Under the action of this pulling force, the insulating I-shaped rod 161 will be pulled a distance by the sling 154. At this time, the conductive ring 169 will move synchronously with the insulating I-shaped rod 161, so that the conductive ring 169 contacts the conductive sleeve 167. After the conductive ring 169 contacts the conductive sleeve 167, the control unit of the UAV 14 will receive an electrical signal that the connection circuit between the conductive ring 169 and the conductive sleeve 167 is turned on. At this time, the control unit of the UAV 14 will send an alarm signal to the imaging control module 3 (for example, reminding the staff through a buzzer). After receiving the alarm signal, the staff should immediately stop the movement of the UAV 14 in that direction, and remotely adjust the moving direction and distance of the UAV 14, so as to avoid the deviation and excessive speed of the UAV 14, and assist the staff to control the UAV 14 to move along the cable to be detected.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An acoustic imaging assembly, comprising an arc-shaped fixed sound insulation column (1), a semi-annular sound insulation board (2) slidably mounted on the outside of the arc-shaped fixed sound insulation column (1), and an imaging control module (3), characterized in that: The arc-shaped fixed sound insulation column (1) is equipped with a driving mechanism (4) for driving the semi-ring plate to rotate, a mounting groove (5) is provided at the bottom of the arc-shaped fixed sound insulation column (1), and a sound wave detection mechanism (6) is installed inside the mounting groove (5), and the sound wave detection mechanism (6) is communicatively connected with the imaging control module (3); A storage groove (7) is provided on the side wall of the semi-annular sound insulation board (2) close to the arc-shaped fixed sound insulation column (1), and a sound insulation elastic membrane (8) is fixedly installed on the inner wall of the storage groove (7), and a sound wave reflection membrane (9) is bonded to the outer wall of the sound insulation elastic membrane (8), an air supply mechanism (10) is installed at one end of the semi-annular sound insulation board (2), and an over-temperature detection component (11) is installed on the side wall of the sound insulation elastic membrane (8) close to the semi-annular sound insulation board (2); The air supply mechanism (10) comprises an air pump (101) fixedly mounted on one end of the semi-annular sound insulation plate (2); an air inlet groove (102) is provided on a groove wall of the storage groove (7) on a side close to the air pump (101); and an output end of the air pump (101) is connected to the air inlet groove (102); The groove wall of the air inlet groove (102) is provided with a plurality of exhaust holes (12), and the diameter of the air inlet end of each exhaust hole (12) is larger than the diameter of the air outlet end, and a normally closed solenoid valve (13) is installed inside each exhaust hole (12).

2. An acoustic imaging assembly according to claim 1, characterized in that: The driving mechanism (4) comprises fixing plates (41) fixedly mounted on both ends of the side walls of the arc-shaped fixed sound insulation column (1), and the semi-annular sound insulation plate (2) is arranged between the fixing plates (41), the two fixing plates (41) are jointly mounted with a motor driving assembly (42), and the motor driving assembly (42) is drivingly connected to two moving gears (43), the side wall of the semi-annular sound insulation plate (2) away from the arc-shaped fixed sound insulation column (1) is fixedly connected to two arc-shaped gear bars (44), and the two moving gears (43) are meshed with the arc-shaped gear bars (44) on the same side, and the motor driving assembly (42) is electrically connected to the sound wave detection mechanism (6).

3. An acoustic imaging assembly according to claim 2, characterized in that: The acoustic wave detection mechanism (6) comprises a signal processor (61), a first data processor (62), a control mainboard (63), a power supply (64), a wireless signal transceiver (65), and microphone components (66) distributed in an array. The signal processor (61), the first data processor (62), the control mainboard (63), and the power supply (64) are all installed inside the installation groove (5). A partition (67) is fixedly installed inside the installation groove (5), and the microphone component (66) is installed at the bottom of the partition (67). The microphone component (66) is electrically connected to the signal processor (61). The signal processor (61) is connected to the control mainboard (63) via the first data processor (62). The data processor (62) is electrically connected to the control mainboard (63), the control mainboard (63) is electrically connected to the power supply (64), a fixing groove (68) is provided on the side wall of the arc-shaped fixed sound insulation column (1) away from the installation groove (5), and a wireless signal transceiver (65) is installed in the fixing groove (68), the control mainboard (63) is communicatively connected to the imaging control module (3) via the wireless signal transceiver (65), the motor drive component (42) is electrically connected to the control mainboard (63), the air pump (101) is electrically connected to the control mainboard (63), and each normally closed solenoid valve (13) is electrically connected to the control mainboard (63).

4. An acoustic imaging assembly according to claim 3, characterized in that: The over-temperature detection component (11) comprises a plurality of heat-conducting insulating pads (111) fixedly mounted on a side wall of the sound-insulating elastic membrane (8) away from the sound wave reflecting membrane (9), and the end surface of each heat-conducting insulating pad (111) is fixedly plugged with a thermistor block (112), a second data processor (113) is fixedly mounted inside the mounting groove (5), each of the thermistor blocks (112) is connected in series with the second data processor (113), and the second data processor (113) is electrically connected to the control mainboard (63).

5. The inspection device of an acoustic imaging assembly according to claim 4, characterized in that: It comprises a drone (14), a suspension mechanism (15) being installed at the bottom of the drone (14), the drone (14) being connected to an arc-shaped fixed sound insulation column (1) via the suspension mechanism (15), and the drone (14) being communicatively connected to an imaging control module (3).

6. The inspection device of an acoustic imaging assembly according to claim 5, characterized in that: The suspension mechanism (15) comprises a mounting seat (151) detachably arranged at the bottom of the drone (14); a circular cavity (152) is provided inside the mounting seat (151); and an electric winding assembly (153) is installed in the circular cavity (152); two slings (154) are wound and rolled up on the electric winding assembly (153); and one end of the two slings (154) away from the electric winding assembly (153) slides through the lower cavity wall of the circular cavity (152); one end of the two slings (154) located outside the circular cavity (152) is installed with a universal trigger assembly (16); and the two universal trigger assemblies (16) are connected to the arc-shaped fixed sound insulation column (1); and the electric winding assembly (153) is electrically connected to a control unit of the drone (14).

7. The inspection device of an acoustic imaging assembly according to claim 6, characterized in that: The two universal trigger assemblies (16) each comprise an insulating I-shaped rod (161) fixedly mounted on one end of the sling (154) located outside the circular cavity (152); a barrel (162) is provided on the outer sliding sleeve of the insulating I-shaped rod (161); a spring (163) is fixedly provided between the inner wall of the barrel (162) and the insulating I-shaped rod (161); a steel ball (164) is fixedly mounted on the bottom of the barrel (162); a connecting ball seat (165) is rotatably provided on the outer side of the steel ball (164); the connecting ball seat (165) is detachably connected to the arc-shaped fixed sound insulation column (1), and the connecting ball seat (165) is detachably connected to the arc-shaped fixed sound insulation column (1). The seats (165) are respectively arranged on both sides of the semi-annular plate, an insulating rod (166) coaxial with the insulating I-shaped rod (161) is fixedly installed inside the barrel (162), and a conductive sleeve (167) is fixedly sleeved on the rod wall of the insulating rod (166), a circular groove (168) matching the conductive sleeve (167) is opened at the bottom of the insulating I-shaped rod (161), and a conductive ring (169) matching the conductive sleeve (167) is fixedly installed at the notch of the circular groove (168), and the conductive ring (169) and the conductive sleeve (167) are electrically connected to a control unit of the drone (14).

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