Wireless geomagnetic sensor

Abstract

The utility model belongs to the technical field of geomagnetic sensors, and particularly relates to a wireless geomagnetic sensor, which comprises a sensor body, a connecting block is arranged on the sensor body in a surrounding manner, the connecting block is fixedly connected with the sensor body, four limiting holes are formed in the connecting block, pressure relief springs are fixedly mounted in the limiting holes, and the pressure relief springs are fixedly connected with the sensor body. One end of the pressure reduction spring is fixedly connected with a protection plate, and the protection plate is located at the top end of the sensor body. According to the utility model, the sensor is conveniently protected through the arrangement of the protection plate, firstly, tires of an automobile can be rolled on the protection plate, the protection plate is extruded, the pressure reduction spring can rapidly contract, so that a part of impact force is absorbed, and meanwhile, when the protection plate falls onto the sensor body through the pressure reduction spring, the sensor body is prevented from falling off. The silica gel pad at the bottom of the protection plate reduces the compression of the protection plate on the sensor body through the high-elasticity material, protects the wireless geomagnetic sensor from being damaged, and prolongs the service life of the wireless geomagnetic sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of geomagnetic sensors, in particular to a wireless geomagnetic sensor. Background Art

[0002] A wireless geomagnetic sensor is a device used to detect changes in the ground magnetic field. It is usually composed of a magnetic induction element, a wireless communication module and a power supply. These sensors can be widely used in intelligent transportation systems and intelligent parking management systems. Wireless geomagnetic sensors are installed on the road to detect the parking status of vehicles. When a vehicle is parked or leaves, the geomagnetic field will change. The sensor can capture these changes instantly and send the data to the central control center through the wireless communication module, thereby realizing real-time monitoring of the status of parking spaces. Wireless geomagnetic sensors play an important role in improving traffic efficiency and improving parking management. It is a very practical intelligent sensing device.

[0003] Patent document CN220543461U discloses a geomagnetic sensor that is easy to install, "including a geomagnetic sensor body, the top of which is fixedly connected to a fixed cylinder, and the outer wall of which is provided with a rotation groove. The utility model is provided with a rotating ring, a block, a rotating column, a slide plate, a slide frame, a first gear, a spring plate, and a second gear. After the staff places the geomagnetic sensor at the installation location, the rotating ring connected to the inner wall of the rotating groove can be rotated to drive the second gear to rotate, the second gear can be rotated to drive the rotating column to rotate, the rotating column can be rotated to drive the slide plate to slide, and after the slide plate slides to the center of the slide frame, the slide plate slides. The first gear is driven to rotate, and the rotation of the first gear drives the spring plate to slide, so that the card block fixedly connected to one end of the spring plate extends outward through the extension opening, so that the card block and the installation position are engaged and limited. However, the geomagnetic sensor of the above-mentioned public document mainly considers improving the installation efficiency of the geomagnetic sensor, and does not take into account that the geomagnetic sensor is usually installed on the road surface. Under the long-term reciprocating rolling of the car, the surface of the geomagnetic sensor will have excessive pressure, resulting in the breakage or damage of the internal components of the sensor, or the rupture or deformation of the sensor housing, thereby affecting its service life. Therefore, it is necessary to develop a wireless geomagnetic sensor to protect the geomagnetic sensor. Utility Model Content

[0004] The utility model aims to provide a wireless geomagnetic sensor to solve the technical problem in the background technology that the reciprocating rolling of a car may damage the geomagnetic sensor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wireless geomagnetic sensor, comprising a sensor body, a connecting block is arranged around the sensor body, and the connecting block is fixedly connected to the sensor body, four limiting holes are arranged on the connecting block, a decompression spring is fixedly installed in the limiting hole, one end of the decompression spring is fixedly connected to a protective plate, and the protective plate is located at the top of the sensor body.

[0006] Preferably, a damper is fixedly installed in the limiting hole, and one end of the damper passes through the interior of the pressure reducing spring, and one end of the damper is fixedly connected to the protective plate.

[0007] Preferably, a silicone pad is fixedly connected to the protective plate, and the silicone pad is located at the bottom end of the protective plate.

[0008] Preferably, the top of the protective plate is arc-shaped.

[0009] Preferably, a top plate is symmetrically arranged on the connecting block, and the top plate is movably arranged on the connecting block, a return spring is fixedly connected to the top plate, and one end of the return spring is fixedly connected to the connecting block.

[0010] Preferably, the connecting block is symmetrically provided with grooves, a connecting rod is fixedly installed in the groove, and the top plate is movably installed on the connecting rod.

[0011] Preferably, the top plate is installed in the groove, and the top plate is movably installed in the groove through a connecting rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is convenient for protecting the sensor body by installing a protective plate. First, the tire of the car will roll on the protective plate through the arc top of the protective plate. The protective plate is squeezed, and the decompression spring will shrink quickly, thereby absorbing part of the impact force. At the same time, when the protective plate falls onto the sensor body through the decompression spring, the silicone pad at the bottom of the protective plate reduces the pressure on the sensor body caused by the protective plate through its highly elastic material. Finally, after the car tire is removed, the damper will drive the protective plate to slowly reset through the decompression spring. This cycle is repeated, thereby protecting the wireless geomagnetic sensor from damage and extending the service life of the wireless geomagnetic sensor.

[0014] 2. The utility model facilitates stabilization of the sensor body by installing a top plate. First, the bottom end of the sensor body is inserted into the installation hole opened on the road surface. When the sensor body enters the installation hole, the inner wall of the installation hole will squeeze the top plate through the slope of the top plate, so that the sensor body can smoothly enter the installation hole. When the sensor body completely enters the installation hole, the reset spring will push the top plate to engage with the inner wall of the installation hole to fix the position of the wireless geomagnetic sensor, so as to facilitate the subsequent pouring of cement in the installation hole to prevent the wireless geomagnetic sensor from tilting, maintain the stability of the wireless sensor during installation, and improve the installation efficiency of the wireless sensor by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of the structure in the middle;

[0017] Figure 3 for Figure 1 A magnified schematic diagram of structure B.

[0018] In the figure: 1. sensor body; 2. connecting block; 3. pressure relief spring; 4. protective plate; 5. limit hole; 6. damper; 7. silicone pad; 8. top plate; 9. reset spring; 10. connecting rod; 11. groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 and Figure 2A wireless geomagnetic sensor comprises a sensor body 1, a connecting block 2 is arranged around the sensor body 1, and the connecting block 2 is fixedly connected to the sensor body 1, four limiting holes 5 are arranged on the connecting block 2, a decompression spring 3 is fixedly installed in the limiting hole 5, one end of the decompression spring 3 is fixedly connected to a protective plate 4, and the protective plate 4 is located at the top of the sensor body 1, and the top of the protective plate 4 is arc-shaped. The wireless geomagnetic sensor is generally installed on the road. When the vehicle is parked or left, the geomagnetic field will change. The sensor can capture these changes in real time and send the data to the central control center through the wireless communication module, so as to realize real-time monitoring of the status of the parking space. However, the geomagnetic sensor is usually installed on the road surface. Under the long-term rolling of the car, the surface of the geomagnetic sensor will be over-pressured, resulting in the sensor The internal components of the sensor may break or be damaged, or the sensor housing may break or deform, thereby affecting its service life. When the sensor body 1 is protected, the protection plate 4 is provided to facilitate protection of the sensor body 1. First, the tire of the car will roll over the protection plate 4 through the arc top of the protection plate 4. The protection plate 4 is squeezed, and the decompression spring 3 will shrink rapidly, thereby absorbing part of the impact force. At the same time, when the protection plate 4 falls onto the sensor body 1 through the decompression spring 3, the silicone pad 7 at the bottom of the protection plate 4 reduces the pressure of the protection plate 4 on the sensor body 1 through its highly elastic material. Finally, after the car tire is removed, the damper 6 will drive the protection plate 4 to slowly reset through the decompression spring 3. This cycle is repeated to protect the wireless geomagnetic sensor from damage and extend the service life of the wireless geomagnetic sensor.

[0021] See also Figure 2 A damper 6 is fixedly installed in the limiting hole 5, and one end of the damper 6 passes through the interior of the pressure reducing spring 3. One end of the damper 6 is fixedly connected to the protective plate 4. The damper 6 is used to make the protective plate 4 slowly descend and rise, further improving the protection of the geomagnetic sensor.

[0022] See also Figure 2 A silicone pad 7 is fixedly connected to the protective plate 4 and is located at the bottom of the protective plate 4 . The silicone pad 7 has high elasticity and high toughness, and can further reduce the impact force of the protective plate 4 on the sensor body 1 .

[0023] See also Figure 1 and Figure 3, a top plate 8 is symmetrically arranged on the connecting block 2, and the top plate 8 is movably arranged on the connecting block 2, a reset spring 9 is fixedly connected to the top plate 8, and one end of the reset spring 9 is fixedly connected to the connecting block 2, a groove 11 is symmetrically arranged on the connecting block 2, a connecting rod 10 is fixedly installed in the groove 11, and the top plate 8 is movably installed on the connecting rod 10, the top plate 8 is installed in the groove 11, and the top plate 8 is movably installed in the groove 11 through the connecting rod 10. When the sensor body 1 is installed and stabilized, the arrangement of the top plate 8 facilitates the stabilization of the installed sensor body 1. First, the sensor body 1 is The bottom end of the sensor body 1 is sent into the installation hole opened on the road surface. When the sensor body 1 enters the installation hole, the inner wall of the installation hole will squeeze the top plate 8 through the slope of the top plate 8, so that the sensor body 1 can smoothly enter the installation hole. When the sensor body 1 completely enters the installation hole, the reset spring 9 will push the top plate 8 to engage with the inner wall of the installation hole to fix the position of the wireless geomagnetic sensor, so as to facilitate the subsequent pouring of cement in the installation hole to prevent the wireless geomagnetic sensor from tilting, maintain the stability of the wireless sensor during installation, and improve the installation efficiency of the wireless sensor by the staff.

[0024] Working principle: when the sensor body 1 is protected, the protection plate 4 is set to facilitate the protection of the sensor body 1. First, the tire of the car will roll over the protection plate 4 through the arc top of the protection plate 4. The protection plate 4 is squeezed, and the decompression spring 3 will shrink quickly to absorb part of the impact force. At the same time, when the protection plate 4 falls onto the sensor body 1 through the decompression spring 3, the silicone pad 7 at the bottom of the protection plate 4 reduces the pressure of the protection plate 4 on the sensor body 1 through its highly elastic material. Finally, after the car tire is removed, the damper 6 will drive the protection plate 4 to slowly reset through the decompression spring 3. This cycle is repeated to protect the wireless geomagnetic sensor from damage and extend the service life of the wireless geomagnetic sensor. When the sensor body 1 is installed and stabilized, the top plate 8 is provided to facilitate stabilization of the installed sensor body 1. First, the bottom end of the sensor body 1 is inserted into the installation hole opened on the road surface. When the sensor body 1 enters the installation hole, the inner wall of the installation hole will squeeze the top plate 8 through the slope of the top plate 8, so that the sensor body 1 can smoothly enter the installation hole. When the sensor body 1 completely enters the installation hole, the reset spring 9 will push the top plate 8 to engage with the inner wall of the installation hole to fix the position of the wireless geomagnetic sensor, so as to facilitate the subsequent pouring of cement in the installation hole to prevent the wireless geomagnetic sensor from tilting, thereby maintaining the stability of the wireless sensor during installation and improving the installation efficiency of the wireless sensor by the staff.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A wireless geomagnetic sensor, comprising a sensor body (1), characterized in that: A connecting block (2) is arranged around the sensor body (1), and the connecting block (2) is fixedly connected to the sensor body (1); four limiting holes (5) are arranged on the connecting block (2); a pressure relief spring (3) is fixedly installed in the limiting hole (5); one end of the pressure relief spring (3) is fixedly connected to a protective plate (4), and the protective plate (4) is located at the top end of the sensor body (1); a silicone pad (7) is fixedly connected to the protective plate (4), and the silicone pad (7) is located at the bottom end of the protective plate (4); and the top end of the protective plate (4) is arc-shaped.

2. A wireless geomagnetic sensor according to claim 1, characterized in that: A damper (6) is fixedly installed in the limiting hole (5), and one end of the damper (6) passes through the interior of the pressure reducing spring (3), and one end of the damper (6) is fixedly connected to the protective plate (4).

3. The wireless geomagnetic sensor according to claim 1, characterized in that: A top plate (8) is symmetrically arranged on the connection block (2), and the top plate (8) is movably arranged on the connection block (2). A return spring (9) is fixedly connected to the top plate (8), and one end of the return spring (9) is fixedly connected to the connection block (2).

4. The wireless geomagnetic sensor according to claim 1, characterized in that: The connection block (2) is symmetrically provided with grooves (11), a connection rod (10) is fixedly installed in the groove (11), and the top plate (8) is movably installed on the connection rod (10).

5. The wireless geomagnetic sensor according to claim 3, characterized in that: The top plate (8) is installed in the groove (11), and the top plate (8) is movably installed in the groove (11) via a connecting rod (10).

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