A laser measuring instrument for detecting automobile parts

Abstract

The application relates to the technical field of curvature detection of automobile parts, and discloses a laser measuring instrument for automobile part detection, which comprises a detection main body used for conveying and detecting automobile parts, a laser measuring device fixedly connected at the top center of the detection main body, a control center fixedly connected at the front end of the laser measuring device, a distribution box fixedly connected at the front end of the detection main body and electrically connected with the laser measuring device, and a processing assembly arranged at the other side of the top of the detection main body. The processing assembly comprises a rotary driving assembly fixedly connected at the front end inner wall of the processing assembly, the rotary driving assembly is a driving motor, an adjusting arm is fixedly connected at the other end output end of the rotary driving assembly, through grooves are arranged in the interiors of the two ends of the adjusting arm, first elastic members are fixedly connected at the inner walls of the one ends of the through grooves away from the center of the adjusting arm, and the device has the advantages of improving the detection precision of the device, facilitating user use and the like.

Description

Technical Field

[0001] This invention relates to the field of automotive parts curvature detection technology, specifically to a laser measuring instrument for automotive parts inspection. Background Technology

[0002] A laser inspection instrument for automotive parts (usually referring to a laser scanner or structured light scanner) is a high-precision non-contact 3D measurement device. It quickly obtains complete 3D point cloud data of the part by projecting laser lines or grating patterns onto the surface of the part and capturing the deformed pattern by a camera. The data is then compared with the CAD model to detect the part's dimensions, geometric tolerances, curvature, and appearance defects.

[0003] Publication No. CN213714226U discloses a novel automobile parts curvature detection device, including a worktable. Support legs are fixedly connected to the four corners of the bottom of the worktable. Support columns are fixedly connected to the front and rear sides of the top of the worktable. A mounting plate is fixedly installed on the top of each support column. A hydraulic cylinder and a converter are fixedly installed on the top of the mounting plate. A telescopic rod is fixedly connected to the bottom output end of the hydraulic cylinder. A laser sensor is fixedly installed at the bottom of the telescopic rod. A sliding groove is formed on the top of the worktable. A matching sliding plate is slidably connected inside the groove. A retainer is fixedly installed on the top of the sliding plate. Four strip rods are symmetrically installed on the left and right ends of the front and rear side walls of the retainer via bolts. A sliding sleeve is movably sleeved on each strip rod. A damping spring is fixedly installed on each sliding sleeve. A hinge joint is fixedly connected to the end of the damping spring away from the sliding sleeve. A clamping block is hinged to the hinge joint via a pin. This device avoids the influence of support rods when placing automobile parts, thus improving work efficiency. In actual testing, most existing equipment uses laser measuring instruments to inspect the contours or curvature of automotive parts. During the inspection process, the surface of the automotive parts comes into contact with suspended dust, rubber particles from conveyor belts, wear debris from positioning fixtures, etc., causing some impurities to adhere to the surface of the automotive parts before inspection. These impurities are scanned along with the automotive parts during the laser measuring instrument inspection process and are measured as part of the automotive parts. This results in a certain difference between the data actually detected by the laser measuring instrument and the actual data, that is, the inspection accuracy of the laser measuring instrument is reduced. There is room for further improvement in the inspection accuracy of existing equipment for automotive parts. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser measuring instrument for inspecting automotive parts, which has advantages such as improving the detection accuracy of the device and being easy for users to use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser measuring instrument for inspecting automotive parts, comprising: a testing body, a laser measuring device, a control center, a power distribution box, a processing component, a rotary drive component, an adjusting arm, a first elastic element, a movable block, an electric turntable, a slide bar, a roller, an opening and closing component, a second elastic element, a shielding plate, an adhesive plate, a conveying pipe, a third elastic element, an air supply component, a connecting plate, a linear drive component, a mounting component, a scraper, and a vacuum adsorption component.

[0006] The positions and connections of the above structures are as follows: A laser measuring instrument for inspecting automotive parts includes a detection body for conveying and inspecting automotive parts. A laser measuring device is fixedly connected to the top center of the detection body. A control center is fixedly connected to the front end of the laser measuring device. A power distribution box is fixedly connected to one side of the front end of the detection body and is electrically connected to the laser measuring device. A processing component is provided on the other side of the top of the detection body.

[0007] Preferably, the processing component includes a rotary drive component, which is fixedly connected to the inner wall of the front end of the processing component. The rotary drive component is configured as a drive motor. An adjusting arm is fixedly connected to the output end of the other end of the rotary drive component. Both ends of the adjusting arm have through slots. A first elastic element is fixedly connected to the inner wall of the end of the through slot away from the center of the adjusting arm. The first elastic element is configured as a spring. A movable block is fixedly connected to one end of the symmetrical plane of the first elastic element. The movable block is slidably connected inside the through slot. An electric turntable is fixedly connected to the rear end of the movable block. A slide rod is fixedly connected to the output end of the rear end of the electric turntable. The other end of the slide rod extends to the inner wall of the rear end of the processing component. A roller is fixedly connected to the outer surface of the slide rod. The roller is located at the inner center of the processing component, and the inner center of the processing component is not closed.

[0008] Preferably, an air supply assembly is rotatably mounted at the rear end of the slide rod. The air supply assembly consists of an axial flow motor, fan blades, and an air supply pipe. The output end of the air supply assembly passes through the slide rod and extends into the interior of the drum. The air supply pipe extends into the interior of the drum, and a filter screen is fixedly connected to the extension portion of the air supply pipe. The filter screen is made of anti-static material. Multiple opening and closing components are fixedly connected to the outer surface of the drum. A conveying pipe is slidably connected to the end of the opening and closing components away from the drum. An adhesive plate is fixedly connected to the other end of the conveying pipe. The adhesive plate is arc-shaped, and two third elastic elements are fixedly connected between the adhesive plate and the drum.

[0009] Preferably, the opening and closing assembly includes two second elastic members, which are fixedly connected to the inner walls on both sides of the opening and closing assembly, and a baffle plate is fixedly connected to the other end of the second elastic member. The end of the baffle plate near the conveying pipe is rounded.

[0010] Preferably, linear drive components are provided on both sides of the processing component. The linear drive components are electric push plates. A connecting plate is fixedly connected to the center of the processing component. A closing plate is fixedly connected to the output end of the electric push plate near the connecting plate. Two mounting parts are fixedly connected to the top of the linear drive components. The other end of the mounting parts is fixedly connected to the surface of the processing component.

[0011] Preferably, scrapers are fixedly connected to the inner walls of both ends of the processing component, and the ends of the two scrapers near their symmetrical surfaces are chamfered, and the scrapers are made of anti-static material.

[0012] Preferably, a vacuum adsorption component is fixedly connected to the top of the processing component. The vacuum adsorption component consists of a vacuum pump, an adsorption head, and a collection chamber. The adsorption head is located on the top side inside the processing component, and the vacuum pump, adsorption head, and collection chamber are fixedly connected to each other.

[0013] Preferably, the control center consists of a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface, and the central processing unit, memory, input / output interface, expansion interface, power supply, and communication interface are electrically connected to each other, and the control center is electrically connected to the power distribution box.

[0014] Beneficial effects 1. This laser measuring instrument for automotive parts inspection reduces the discrepancy between the actual data detected by the laser measuring instrument and the actual data due to the presence of impurities, thereby improving the detection accuracy of the instrument and making it easier for users to operate.

[0015] 2. This laser measuring instrument for automotive parts inspection allows for continuous inspection and processing of automotive parts without interruption by activating the processing components, thereby improving the inspection efficiency and making it easier for users to operate.

[0016] 3. This laser measuring instrument for automotive parts inspection, by activating the processing component, avoids the situation where existing equipment uses a fan to directly blow impurities onto the surface of the inspection body. This prevents subsequent uninspected automotive parts from still adhering to these impurities during transport. This reduces the discrepancy between the actual data detected by the laser measuring instrument and the actual data due to impurities, thus improving the instrument's detection accuracy and making it easier for users to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 2This is a schematic diagram of the rear view structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 3 This is a schematic diagram of the processing component structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 4 This is a schematic diagram of the rotary drive assembly structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 5 This is a schematic diagram of the air supply assembly of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 6 This is a schematic diagram of the adjusting arm structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 7 This is a schematic diagram of the roller structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 8 This is a schematic diagram of the adhesive plate structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 9 This is a schematic diagram of the internal structure of the opening and closing assembly of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 10 This is a schematic diagram of the internal structure of the processing component of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 11 This is a schematic diagram of the linear drive assembly structure of a laser measuring instrument for inspecting automotive parts according to the present invention; Figure 12 This is a schematic diagram of the scraper structure of a laser measuring instrument for inspecting automotive parts according to the present invention.

[0018] In the diagram: 1. Detection body; 10. Laser measuring equipment; 11. Control center; 12. Power distribution box; 2. Processing component; 20. Rotary drive component; 200. Adjusting arm; 201. First elastic element; 202. Movable block; 203. Electric turntable; 204. Slide rod; 21. Roller; 22. Opening and closing component; 220. Second elastic element; 221. Baffle plate; 23. Adhesive plate; 230. Conveying pipe; 231. Third elastic element; 24. Air supply component; 25. Connecting plate; 26. Linear drive component; 260. Mounting component; 27. Scraper; 28. Vacuum adsorption component. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example Please see Figures 1 to 2 A laser measuring instrument for inspecting automotive parts includes a detection body 1 for conveying and inspecting automotive parts. A laser measuring device 10 is fixedly connected to the top center of the detection body 1. A control center 11 is fixedly connected to the front end of the laser measuring device 10. A power distribution box 12 is fixedly connected to one side of the front end of the detection body 1 and is electrically connected to the laser measuring device 10. A processing component 2 is provided on the other side of the top of the detection body 1. In actual testing, most existing equipment uses laser measuring instruments to inspect the contours or curvature of automotive parts. During the inspection process, the surface of the automotive parts comes into contact with suspended dust, rubber particles from the conveyor belt, wear debris from the positioning fixture, etc., which causes some impurities to adhere to the surface of the automotive parts before inspection. These impurities are scanned together during the laser measuring instrument inspection and measured as part of the automotive parts, resulting in a certain difference between the data actually detected by the laser measuring instrument and the actual data, that is, the inspection accuracy of the laser measuring instrument is reduced. This invention discloses a laser measuring instrument for inspecting automotive parts. Initially, automotive parts are transported to the laser measuring device 10 via the inspection body 1 for contour and curvature data measurement. During the transport process, the automotive parts first pass through the processing component 2, which cleans the inspection surface of the automotive parts before transporting them to the laser measuring device 10 for inspection. This reduces the discrepancy between the actual data detected by the laser measuring instrument and the actual data due to the presence of impurities, thus reducing the detection accuracy of the laser measuring instrument. This improves the detection accuracy of the device and makes it easier for users to use. Please see Figures 3 to 10 Further as described above, the processing component 2 includes a rotary drive component 20, which is fixedly connected to the inner wall of the front end of the processing component 2. The rotary drive component 20 is configured as a drive motor. An adjusting arm 200 is fixedly connected to the output end of the other end of the rotary drive component 20. Both ends of the adjusting arm 200 are provided with through slots. A first elastic element 201 is fixedly connected to the inner wall of the end of the through slot away from the center of the adjusting arm 200. The first elastic element 201 is configured as a spring. A movable block 202 is fixedly connected to one end of the symmetrical plane of the first elastic element 201. The movable block 202 is slidably connected inside the through slot. An electric turntable 203 is fixedly connected to the rear end of the movable block 202. A slide rod 204 is fixedly connected to the output end of the rear end of the electric turntable 203. The other end of the slide rod 204 extends to the inner wall of the rear end of the processing component 2. A roller 21 is fixedly connected to the outer surface of the slide rod 204. The roller 21 is located at the inner center of the processing component 2, and the inner center of the processing component 2 is not closed. In the above steps, automotive parts preferentially pass through processing component 2, such as... Figure 3 As shown, at this time, the automotive parts preferentially contact the left roller 21. The control center 11 activates the left electric turntable 203, driving the slide bar 204 to rotate. The rotation of the slide bar 204 drives the left roller 21 to rotate. The rotation of the left roller 21 cleans the inspection surface of the automotive parts. Due to the long-term operation of the equipment, the amount of impurities that the roller 21 can adsorb is limited. When the adsorption capacity of the left roller 21 decreases, the control center 11 activates the rotary drive assembly 20. The rotary drive assembly 20 activates and drives the adjusting arm 200 to rotate. The rotation of the adjusting arm 200 drives the two electric turntables 203 to rotate through the two movable blocks 202. Since the through groove is provided with a first elastic element 201, the first elastic element 201 can elastically deform in time when the movable block 202 moves at the inner wall of the processing assembly 2. The movable block 202 is slidably connected inside the through groove and itself has With a certain limiting function, the movable block 202 can only move in a straight line along the inside of the processing component 2. At this time, the movable block 202 on the left moves upward and the movable block 202 on the right moves downward. The upward movement of the movable block 202 on the left drives the electric turntable 203, slide bar 204, roller 21 and air supply component 24 to move upward. At this time, the roller 21 on the left is no longer in contact with the detection surface of the car parts. Meanwhile, the movable block 202 on the right moves downward, driving the electric turntable 203, slide bar 204, roller 21 and air supply component 24 to move downward. At this time, the roller 21 on the right comes into contact with the car parts. By using the control center 11 to open the electric turntable 203 on the right, the roller 21 on the right can clean the car parts. Thus, the device can continuously detect and process car parts without stopping, improving the detection efficiency of the device and making it convenient for users to use. Please see Figures 5 to 10 Further as described above, an air supply assembly 24 is rotatably mounted at the rear end of the slide bar 204. The air supply assembly 24 consists of an axial flow motor, fan blades, and an air supply pipe. The output end of the air supply assembly 24 passes through the slide bar 204 and extends into the interior of the roller 21. The air supply pipe extends into the interior of the roller 21, and a filter screen is fixedly connected to the extension part of the air supply pipe. The filter screen is made of anti-static material. Multiple opening and closing assemblies 22 are fixedly connected to the outer surface of the roller 21. A conveying pipe 230 is slidably connected to one end of the opening and closing assembly 22 away from the roller 21. An adhesive plate 23 is fixedly connected to the other end of the conveying pipe 230. The adhesive plate 23 is arc-shaped, and two third elastic elements 231 are fixedly connected between the adhesive plate 23 and the roller 21. In the above steps, when the roller 21 rotates to clean the inspection surface of the automotive parts, the air supply assembly 24 is activated by the control center 11. The rotation of the roller 21 drives multiple adhesive plates 23 to rotate through multiple conveying pipes 230. The rotation of the adhesive plates 23 adheres and adsorbs impurities on the inspection surface of the automotive parts. Whenever the adhesive plate 23 rotates to the inspection surface of the automotive parts, it will be subjected to an upward thrust from the automotive parts. The third elastic element 231 undergoes compressive elastic deformation under the influence of the thrust. At this time, the adhesive plate 23 moves upward, driving the conveying pipes 230 to move upward. The movement of the conveying pipes 230 squeezes the two baffles 221 through the rounded corners and moves them upward. The two third elastic elements 231 undergo compressive elastic deformation. At this time, the baffles 221 no longer block the conveying pipes 230 and the inside of the roller 21. The air supply assembly 24 is adjusted to suction treatment by the control center 11, and a negative pressure is generated inside the roller 21. At this time, the conveying pipes 230 transmit the suction force to the adhesive plates 23 to adsorb the surface of the automotive parts. This allows the device to adsorb small impurities that the adhesive plate 23 cannot adhere to, and to suck the adsorbed impurities into the drum 21. The filter screen is used to prevent impurities from adsorbing into the air supply pipe and causing blockage. When the adhesive plate 23 detaches from the automotive parts, the second elastic element 220 elastically deforms and resets, causing the conveying pipe 230 and the adhesive plate 23 to reset. At this time, the two third elastic elements 231 elastically deform and reset, causing the baffle plate 221 to seal the conveying pipe 230 and the inside of the drum 21 again. This allows the device to adsorb impurities on the detection surface of the automotive parts while adsorbing impurities. The impurities detach from the surface of the detection body 1, avoiding the situation where the existing equipment uses a fan to blow impurities onto the surface of the detection body 1, and the subsequent undetected automotive parts may still adhere to these impurities during the conveying process. This reduces the difference between the actual data detected by the laser measuring instrument and the actual data due to the presence of impurities, i.e., the reduced detection accuracy of the laser measuring instrument. This improves the detection accuracy of the device and makes it easier for users to use. Please see Figures 8 to 9 Furthermore, in the above description, the opening and closing assembly 22 includes two second elastic members 220, which are fixedly connected to the inner walls on both sides of the opening and closing assembly 22. A baffle plate 221 is fixedly connected to the other end of the second elastic member 220, and the end of the baffle plate 221 near the conveying pipe 230 is rounded. This is to ensure that the process of focusing on adsorbing impurities on the inspection surface of automotive parts while the device is adsorbing them is carried out normally. Please see Figures 1 to 12Furthermore, in the above description, linear drive components 26 are provided on both sides of the processing component 2. The linear drive components 26 are electric push plates. A connecting plate 25 is fixedly connected to the center of the processing component 2. A closing plate is fixedly connected to the output end of the electric push plate near the connecting plate 25. Two mounting parts 260 are fixedly connected to the top of the linear drive components 26. The other end of the mounting parts 260 is fixedly connected to the surface of the processing component 2. like Figure 3 As shown, during the above steps, when the left roller 21 moves and the right roller 21 moves, the control center 11 activates the linear drive components 26 at each position. The linear drive components 26 retract the sealing plate, and the roller 21 can move normally. After the roller 21 finishes moving, the control center 11 controls the linear drive components 26 to reset the sealing plate. This prevents impurities from falling back to the detection body 1 when the roller 21, which has been stuck to impurities, moves to the top of the processing component 2 for impurity removal. This improves the isolation degree of the device for impurities and makes it easier for users to use. Please see Figures 1 to 12 Furthermore, in the above description, scrapers 27 are fixedly connected to the inner walls of both ends of the processing component 2. The ends of the two scrapers 27 near their symmetrical planes are chamfered, and the scrapers 27 are made of anti-static material. When the left roller 21 moves to the top of the inside of the processing component 2, the left scraper 27 comes into contact with the left adhesive plate 23. At this time, the control center 11 activates the electric turntable 203 to make the roller 21 rotate. The rotation of the roller 21 drives the multiple adhesive plates 23 to rotate at the bottom of the scraper 27, thereby scraping off the impurities adhering to the surface of the adhesive plate 23. At the same time, the control center 11 activates the vacuum adsorption component 28 to adsorb the scraped impurities. The user can also manually clean the impurities collected in the roller 21 in this step. Then the left roller 21 can continue to be used for user convenience. Please see Figures 1 to 12 Furthermore, in the above description, a vacuum adsorption assembly 28 is fixedly connected to the top of the processing assembly 2. The vacuum adsorption assembly 28 consists of a vacuum pump, an adsorption head, and a collection chamber. The adsorption head is located on the top side inside the processing assembly 2, and the vacuum pump, adsorption head, and collection chamber are fixedly connected to each other. The vacuum adsorption component 28 is used to adsorb and collect impurities on the surface of the adhesive plate 23, making it convenient for users to use; Please see Figure 1 Furthermore, as described above, the control center 11 consists of a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface, and the central processing unit, the memory, the input / output interface, the expansion interface, the power supply, and the communication interface are electrically connected to each other, and the control center 11 is electrically connected to the distribution box 12. Used to control the start and stop of various components inside the detection body 1 and the processing component 2.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser measuring instrument for inspecting automotive parts, comprising a detection body (1) for conveying and inspecting automotive parts, characterized in that: A laser measuring device (10) is fixedly connected to the top center of the detection body (1), a control center (11) is fixedly connected to the front end of the laser measuring device (10), a power distribution box (12) is fixedly connected to one side of the front end of the detection body (1) and the power distribution box (12) is electrically connected to the laser measuring device (10), and a processing component (2) is provided on the other side of the top of the detection body (1). The processing component (2) includes a rotary drive component (20), which is fixedly connected to the inner wall of the front end of the processing component (2). The rotary drive component (20) is configured as a drive motor. An adjusting arm (200) is fixedly connected to the output end of the other end of the rotary drive component (20). A through groove is provided inside both ends of the adjusting arm (200). A first elastic element (201) is fixedly connected to the inner wall of the end of the through groove away from the center of the adjusting arm (200). The first elastic element (201) is configured as a spring. At one end of the symmetrical plane of the first elastic element (201) A movable block (202) is fixedly connected, and the movable block (202) is slidably connected inside the through groove. An electric turntable (203) is fixedly connected to the rear end of the movable block (202). A slide rod (204) is fixedly connected to the rear output end of the electric turntable (203). The other end of the slide rod (204) extends to the rear inner wall of the processing component (2). A roller (21) is fixedly connected to the outer surface of the slide rod (204). The roller (21) is located at the inner center of the processing component (2), and the inner center of the processing component (2) is not closed. At the rear end of the slide rod (204), there is a rotating air supply assembly (24). The air supply assembly (24) consists of an axial flow motor, a fan blade, and an air supply pipe. The output end of the air supply assembly (24) passes through the slide rod (204) and extends into the interior of the roller (21). The air supply pipe extends into the interior of the roller (21), and a filter screen is fixedly connected to the extension part of the air supply pipe. The filter screen is made of anti-static material. Multiple opening and closing assemblies (22) are fixedly connected to the outer surface of the roller (21). A conveying pipe (230) is slidably connected to one end of the opening and closing assembly (22) away from the roller (21). The other end of the conveying pipe (230) is fixedly connected to an adhesive plate (23). The adhesive plate (23) is arc-shaped. Two third elastic elements (231) are fixedly connected between the adhesive plate (23) and the roller (21). The opening and closing assembly (22) includes two second elastic members (220), which are fixedly connected to the inner walls on both sides of the opening and closing assembly (22). A baffle plate (221) is fixedly connected to the other end of the second elastic member (220), and the baffle plate (221) is rounded at the end near the conveying pipe (230).

2. The laser measuring instrument for inspecting automotive parts according to claim 1, characterized in that: Linear drive components (26) are provided on both sides of the processing component (2). The linear drive components (26) are electric push plates. A connecting plate (25) is fixedly connected to the center of the processing component (2). A closed plate is fixedly connected to the output end of the electric push plate near the connecting plate (25). Two mounting parts (260) are fixedly connected to the top of the linear drive components (26). The other end of the mounting parts (260) is fixedly connected to the surface of the processing component (2).

3. The laser measuring instrument for inspecting automotive parts according to claim 2, characterized in that: The processing component (2) has scrapers (27) fixedly connected to the inner walls of both ends. The scrapers (27) are chamfered at the end near their symmetrical plane and are made of antistatic material.

4. The laser measuring instrument for inspecting automotive parts according to claim 3, characterized in that: The top of the processing component (2) is fixedly connected to a vacuum adsorption component (28), which consists of a vacuum pump, an adsorption head, and a collection chamber. The adsorption head is located on the top side inside the processing component (2), and the vacuum pump, adsorption head, and collection chamber are fixedly connected to each other.

5. A laser measuring instrument for inspecting automotive parts according to claim 1, characterized in that: The control center (11) consists of a central processing unit, a memory, an input / output interface, an expansion interface, a power supply, and a communication interface. The central processing unit, the memory, the input / output interface, the expansion interface, the power supply, and the communication interface are electrically connected to each other. The control center (11) is electrically connected to the distribution box (12).

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