Hidden vehicle detector embedded in toll station safety island

Abstract

The invention discloses a concealed vehicle detector mounted in a toll station safety island in an embedded manner, a containing groove is formed in one side, close to a driving channel, of the safety island, and the vehicle detector is adaptively contained in the containing groove; the vehicle detector comprises a mounting box body, the mounting box body is fixedly connected in the accommodating groove, and at least one human body sensor module and at least one millimeter wave radar module are arranged in the mounting box body. When the vehicle detector is installed and constructed, only a groove needs to be formed in the side face of an original island platform of the ETC channel, the ground does not need to be cut, the installation mode is simple, the construction time is short, and normal driving cannot be affected. The vehicle detector is embedded in the containing groove of the safety island, installation mechanisms such as stand columns are not needed, safety is higher, and the overall appearance is more concise and attractive. At least one human body sensor module and at least one millimeter wave radar sensor module are arranged in the vehicle detector, the detection precision is higher through a multi-sensor detection technology, and pedestrians and passing vehicles can be accurately distinguished.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle detection, and relates to a vehicle detection device for a toll station, and in particular to a concealed vehicle detector embedded in a safety island of a toll station. Background Art

[0002] Electronic Toll Collection (ETC) is a fully automatic toll collection system that uses dedicated short-range communication technology to interact between roadside antennas and on-board electronic tags on toll-type highways or bridges, and uses computer Internet technology to conduct back-end settlement processing with banks, so that vehicles can pay highway or bridge fees without stopping when passing through highway or bridge toll stations. Usually, the ETC system includes a road side unit (RSU) and an on-board unit (OBU). The RSU and OBU are connected by communication to achieve the functions of vehicle identity recognition and automatic deduction of fees.

[0003] In order to sense vehicles passing through the lane, a vehicle sensing device needs to be installed in the ETC lane. The vehicle sensing device generally includes two types: buried and suspended. The buried vehicle sensing device refers to a ground sensing coil or a geomagnetic vehicle detector buried under the lane road surface. When a vehicle passes through the lane, the ground sensing coil can sense the vehicle through the weight change signal, and the geomagnetic vehicle detector can sense the vehicle through the change of the magnetic signal. The sensing signal is sent to the roadside antenna, so that the RSU can determine the vehicle position and communicate with the OBU to confirm the vehicle information. In order to install the ground sensing coil or the geomagnetic vehicle detector, it is necessary to cut and groove the lane ground, and then fill and level the road surface after the burial is completed. This buried vehicle sensing device has the problems of high construction difficulty, long construction time, high installation cost, and easy traffic obstruction during construction. At the same time, cutting and grooving the ground can easily lead to the problem of softening the ground and easily damaging the road surface; in addition, it is difficult to repair and replace the ground sensing coil or the geomagnetic vehicle detector when it fails.

[0004] The suspended vehicle sensing device can solve the above problems to a certain extent. The suspended vehicle sensing device includes a detection radar installed on the roadside of the ETC channel. The radar detects and identifies vehicles and sends the detection signal to the roadside antenna. This vehicle sensing device has the following technical problems: the detection radar is difficult to distinguish between pedestrians and vehicles. To solve this problem, the industry has developed a vehicle detection system that combines suspended vehicle sensing devices and buried sensing devices in recent years, such as Figure 1As shown, it includes a column 1a arranged on the road side of the ETC driving lane, and a detection radar 2a is connected and installed on the column 1a, and a ground sensing coil 3a is buried under the ground of the driving lane. In this way, the detection radar 2a and the ground sensing coil 3a can realize the recognition and detection of the vehicles passing by, and can achieve the effect of distinguishing between pedestrians and vehicles. However, this detection system still has the problem of needing to cut the ground and install the ground sensing coil 3a; at the same time, in order to achieve higher detection accuracy, the installation position of the detection radar is higher, so the height of the column needs to reach at least 60-120cm, and the column structure installed in the lane is prone to collision risks and low reliability. The collapse of the column is easy to damage the vehicle, which poses a safety hazard, and the existence of the column reduces the beauty and regularity of the lane. The detection direction schematic diagram of the detection radar 2a in the existing vehicle detection system is shown in Figure 2-3 As shown in the figure, since the detection radar 2a is installed at a high height, it radiates detection signals in four directions: up, down, left, and right, and the downward detection signal is easily interfered by electromagnetic waves reflected from the ground. In addition, the detection radar also has the problem of being unable to distinguish between pedestrians and vehicles. It can be seen that the current conventional buried and suspended vehicle sensing devices have certain technical defects and are difficult to meet the high efficiency and high precision requirements of ETC charging.

[0005] In view of this, it is necessary to further improve the vehicle detection device in the prior art. Summary of the invention

[0006] To this end, the technical problem to be solved by the present invention is that the traditional underground ETC vehicle detection device is difficult to construct, costly, and difficult to repair and replace; the suspended ETC vehicle detection device has safety hazards, low aesthetics, and is easy to misidentify. Therefore, a concealed vehicle detector that is easy to install and replace, has high safety and detection accuracy, and has a neat and beautiful appearance is proposed, which is embedded in the safety island of the toll station.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] The present invention provides a concealed vehicle detector embedded in a safety island of a toll station, wherein a receiving groove is provided on a side of the safety island close to a driving passage, and the vehicle detector is adapted to be received inside the receiving groove; the vehicle detector comprises: an installation box body, the installation box body is fixedly connected to the receiving groove, and at least one human body sensor module and at least one millimeter wave radar module are arranged in the installation box body.

[0009] Preferably, there are two millimeter-wave radar modules, the two millimeter-wave radar modules are arranged at an interval, and the length directions of the two millimeter-wave radars are perpendicular to each other.

[0010] Preferably, the center distance between the two millimeter-wave radar modules is 2λ-30λ, wherein λ is the wavelength at the operating frequency of the millimeter-wave radar module.

[0011] Preferably, there are two human body sensor modules, the two human body sensor modules are arranged at an interval, and the millimeter wave radar module is arranged between the two human body sensor modules.

[0012] Preferably, the installation box body includes a face shell having an installation space and a back plate connected to the face shell, the face shell is exposed from the accommodating groove, and the face shell has an installation window, and the human body sensor module and the millimeter wave radar module are arranged at the installation window.

[0013] Preferably, the surface shell includes a top plate and a bottom plate spaced apart from and arranged parallel to the top plate, a first side plate and a second side plate are connected to both ends of the top plate and the bottom plate, a panel is connected to the top plate and the bottom plate on one side close to the driving channel, the installation window is opened on the panel, and the panel has an inclination angle of 0-20° relative to the vertical direction.

[0014] Preferably, the millimeter-wave radar module and the human body sensor module are connected to a circuit board, and the circuit board connected with the millimeter-wave radar module and the human body sensor module is arranged in a sensor box, and the sensor box is connected to the installation window; a wave-transmitting front cover is provided on the side of the sensor box facing the driving channel.

[0015] Preferably, the sensor box is connected to the mounting window via a mounting plate.

[0016] Preferably, the sensor box body is connected to the mounting plate via a connecting bracket, the connecting bracket is connected to a side of the sensor box body away from the mounting plate, and the connecting bracket is fixedly connected to the mounting plate via a connecting piece.

[0017] Preferably, the mounting plate is connected to a lining plate, and the lining plate is fixedly connected to the panel.

[0018] The above technical solution of the present invention has the following advantages compared with the prior art:

[0019] The present invention provides a concealed vehicle detector embedded in the safety island of a toll station. A receiving groove is provided on one side of the safety island close to the driving channel, and the vehicle detector is adapted to be received inside the receiving groove; the vehicle detector includes: an installation box body, the installation box body is fixedly connected to the receiving groove, and at least one human sensor module and at least one millimeter-wave radar module are arranged in the installation box body. When installing and constructing the vehicle detector, it is only necessary to make a groove on the side of the original island platform of the ETC channel, without cutting the ground. The installation method is simple, the construction time is short, and it will not affect normal driving. The vehicle detector is embedded in the receiving groove of the safety island, and no installation mechanism such as columns is required. It has higher safety and a simpler and more beautiful overall appearance. At least one human sensor module and at least one millimeter-wave radar sensor module are arranged in the vehicle detector. Through multi-sensor detection technology, the detection accuracy is higher, and pedestrians and passing vehicles can be accurately distinguished. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0021] Figure 1 It is a structural schematic diagram of a vehicle detection system in the prior art;

[0022] Figure 2 It is a schematic diagram of the detection direction of a vehicle detection system in the horizontal direction in the prior art;

[0023] Figure 3 It is a schematic diagram of the detection direction of a vehicle detection system in the vertical direction in the prior art;

[0024] Figure 4 It is a schematic diagram of the installation of a concealed vehicle detector provided by an embodiment of the present invention which is embedded and installed in a safety island of a toll station;

[0025] Figure 5 It is a schematic diagram of the horizontal detection direction of a concealed vehicle detector embedded in a safety island of a toll station provided by an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the detection direction in the vertical direction of a concealed vehicle detector embedded in a safety island of a toll station provided by an embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of another horizontal detection direction of the embedded device installed on the safety island of a toll station provided by an embodiment of the present invention;

[0028] Figure 8 It is a structural schematic diagram of a concealed vehicle detector provided by an embodiment of the present invention and installed in an embedded manner on a safety island of a toll station;

[0029] Fig. 9It is a schematic diagram of the assembly of a millimeter wave radar module, a human body sensor module and a circuit board in a concealed vehicle detector embedded in a safety island of a toll station provided by an embodiment of the present invention;

[0030] Fig.10 It is an exploded schematic diagram of a concealed vehicle detector provided by an embodiment of the present invention and embedded in a safety island of a toll station;

[0031] Fig.11 It is a schematic diagram of the internal structure of a concealed vehicle detector provided by an embodiment of the present invention and installed in a safety island of a toll station;

[0032] Fig.12 The present invention is a schematic diagram of an exploded view of a mounting plate and a lining plate in a concealed vehicle detector embedded in a safety island of a toll station provided by an embodiment of the present invention.

[0033] The reference numerals in the figure are represented as follows: 100-vehicle inspection device; 200-safety island; 1-installation box body; 101-face shell; 1011-top plate; 1012-bottom plate; 1013-first side plate; 10131-first hypotenuse; 10132-second hypotenuse; 1014-second side plate; 1015-panel; 102-back plate; 103-installation window; 2-first millimeter-wave radar module; 3-second millimeter-wave radar module; 4-first human body sensor module; 5-second human body sensor module; 6-sensor box body; 601-transparent front cover; 7-circuit board; 701-first circuit board; 702-second circuit board; 703-third circuit board; 8-installation plate; 801-hollow position of installation plate; 9-connection bracket; 10-connecting piece; 11-lining plate; 1101-hollow position of lining plate; 12-power indicator light. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The terms “first”, “second”, etc. in the present invention are only used to distinguish between the two in the description and have no special meaning.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example

[0039] This embodiment provides a concealed vehicle detector embedded in the safety island of a toll station. Figure 4-Figure 12 The vehicle detector 100 is installed on the safety island 200 on the side of the ETC channel. The safety island 200 is an important part of the highway toll station, which can provide a safe working environment for the toll station staff and ensure the smooth and safe passage of vehicles. Usually, the height of the safety island 200 is about 30, and it has a relatively regular and smooth surface, so that the installation position of the vehicle detector 100 is no more than 30cm from the lane surface. This installation height ensures the detection accuracy while preventing stones and other debris from accidentally triggering the vehicle detector. A mounting groove is provided on the side of the safety island 200 close to the driving channel, and the top surface of the mounting groove is open. The vehicle detector 100 is adapted to be embedded and installed in the mounting groove. After installation, one side of the vehicle detector 100 is flush with the side of the safety island 200, and the top surface of the vehicle detector 100 is flush with the top surface of the safety island 200. The vehicle detector 100 specifically includes: an installation box body 1, which is fixedly connected to an installation groove on the side of the safety island 200, and at least one human body sensor module and at least one millimeter wave radar module are arranged in the installation box body 1.

[0040] The present embodiment provides a concealed vehicle detector embedded in the toll station safety island. When installing the vehicle detector, it is only necessary to make a groove on the side of the original safety island platform of the ETC channel without cutting the ground. The installation method is simple, the construction time is short, and it will not affect normal driving. The vehicle detector 100 is embedded in the receiving groove of the safety island 200, and no installation mechanism such as columns is required, which is safer. Since the height of the safety island 200 is relatively low, it is difficult for the driver to notice the installation position of the vehicle detector when driving, achieving the effect of concealed installation, and the overall appearance is more simple and beautiful; and as shown in the figure, Figure 4-Figure 7As shown, since the vehicle detector is installed at a lower position, its detection direction only needs to be upward, left, and right, and there is no need to detect downward. The vehicle detector 100 is provided with at least one human sensor module and at least one millimeter wave radar sensor module. Through multi-sensor detection technology, the detection accuracy is higher, and pedestrians and passing vehicles can be accurately distinguished, solving the problem that traditional radar sensors cannot distinguish pedestrians from vehicles. The vehicle detector can be widely used in ETC systems of highways and toll bridges.

[0041] See also Fig. 9 In order to further improve the sensing accuracy of the vehicle detector, in this embodiment, there are two millimeter-wave radar modules, including a first millimeter-wave radar module 2 and a second millimeter-wave radar module 3. The first millimeter-wave radar module 2 and the second millimeter-wave radar module 3 are arranged at intervals, and the length direction of the first millimeter-wave radar module 2 is arranged perpendicular to the length direction of the second millimeter-wave radar 3. Specifically, when the vehicle detector 100 is installed in the safety island 200, the length direction of the first millimeter-wave radar module 2 is arranged in the horizontal direction, and the length direction of the second millimeter-wave radar module 3 is arranged in the vertical direction. In this way, the first millimeter-wave radar module 2 can radiate a horizontal beam, and the second millimeter-wave radar module 3 can radiate a pitch beam (such as Figure 5-7 As shown), a larger radar detection range is achieved, and the vehicle recognition accuracy is improved. By adopting the above-mentioned dual millimeter-wave radar structure, accurate recognition can be achieved within a range of 2m in length and 1m in height. The height detection range is calculated from the top surface of the safety island 200 (i.e., from a height of about 30cm from the ground). In this embodiment, preferably, the center distance between the first millimeter-wave radar module 2 and the second millimeter-wave radar module 3 is 2λ-30λ, wherein λ is the wavelength at the operating frequency of the millimeter-wave radar module. In this embodiment, preferably, the center distance between the first millimeter-wave radar module 2 and the second millimeter-wave radar module 3 is 20λ. Of course, as a convertible implementation method, the length direction of the first millimeter-wave radar module 2 can also be arranged in the vertical direction to radiate a pitch beam; the length direction of the second millimeter-wave radar module 3 can be arranged in the vertical direction to radiate a horizontal beam. Through the orthogonal arrangement of the first millimeter-wave radar module 2 and the second millimeter-wave radar module 3, a three-dimensional radiation beam is formed using a two-dimensional arrangement structure.

[0042] In this embodiment, the first millimeter wave radar module 2 and the second millimeter wave radar module 3 can use a 60-77GHz millimeter wave radar chip, and in this embodiment, a 77GHz millimeter wave radar chip is preferred. The 77GHz millimeter wave radar has a moderate wavelength, a wide frequency band, a high resolution, and strong anti-interference ability, so that the concealed vehicle detector provided in this embodiment has a higher detection accuracy. Specifically, the models of the first millimeter wave radar module 2 and the second millimeter wave radar module 3 include but are not limited to IWR1642 and RC7701N32, and the identification position can be determined by selecting the algorithm of the first millimeter wave radar module 2 and the second millimeter wave radar module 3, that is, the above-mentioned detection range of 2m long and 1m high is calculated by the algorithm of the millimeter wave radar module.

[0043] The present embodiment provides a concealed vehicle detector embedded in the safety island of a toll station. There are also two human body sensor modules, including a first human body sensor module 4 and a second human body sensor module 5. The first human body sensor module 4 and the second human body sensor module 5 are arranged at intervals, and the first human body sensor module 4 and the second human body sensor module 5 are arranged at both ends of the sensor 100 in the horizontal direction. The first millimeter wave radar module 2 and the second millimeter wave radar module 3 are arranged between the first human body sensor module 4 and the second human body sensor module 5. By arranging the first human body sensor module 4 and the second human body sensor module 5 at the head and tail ends of the vehicle detector in the horizontal direction, the vehicle can be accurately identified by the change of the magnetic field when the vehicle passes by. The two human body sensor modules further improve the recognition accuracy and make up for the weakness of the millimeter wave radar sensor that cannot distinguish between pedestrians and vehicles. The first human body sensor module 4 and the second human body sensor module 5 are preferably geomagnetic sensor modules, and their models include but are not limited to RM3100 and IST8310.

[0044] like Fig.10 As shown, in order to stably install the vehicle detector 100 inside the safety island 200 and ensure excellent vehicle identification detection accuracy, the structure of the installation box body 1 is as follows: the installation box body 1 includes a face shell 101 with an installation space and a back plate 102 connected to the face shell 101, the face shell 101 is exposed to the receiving groove of the safety island 200, and the face shell 101 is provided with an installation window 103, and the human body sensor module and the millimeter wave radar module are arranged at the installation window, so that the installation box body 1 will not block the human body sensor module and the millimeter wave radar module, and can efficiently and accurately identify passing vehicles. The height of the installation box body 1 is 10-30cm, preferably 20cm in this embodiment, and the size of the installation box body 1 can be set according to actual needs, and the installation box body 1 does not protrude from the surface of the safety island 200.

[0045] Furthermore, the housing 101 specifically includes a top plate 1011 and a bottom plate 1012 spaced apart from and arranged parallel to the top plate, the top plate 1011 and the bottom plate 1012 are respectively connected to the first side plate 1013 and the second side plate 1014 at the left and right ends, the top plate 1011 and the bottom plate 1012 are connected to a panel 1015 on the side close to the driving channel, the installation window 103 is opened on the panel 1015, and the back plate 102 is connected to the top plate 1011 and the side of the bottom plate 1012 away from the panel 1015. When the vehicle detector 100 is installed in the safety island 200, the top plate 1011 and the panel 1015 are exposed on the safety island 200, and the bottom plate 1012 is connected to the bottom of the installation slot of the safety island 200.

[0046] The cross-sectional figures of the first side panel 1013 and the second side panel 1014 are both trapezoidal, and the two have the same shape and size. The two hypotenuses of the trapezoid have an angle of 0-20° with the vertical direction. In this embodiment, taking the first side panel 113 as an example, the left and right sides of the first side panel 1013 include a first hypotenuse 10131 and a second hypotenuse 10132. The angle between the first hypotenuse 10131 and the vertical direction is preferably 15°, and the angle between the second hypotenuse 10132 and the vertical direction is preferably 11°. In this way, the face shell 101 has an inclination angle of 0-20° relative to the vertical direction, and the vehicle detector 100 installed in the installation window 103 has an inclination angle of 0-20° relative to the vertical direction. In this embodiment, the inclination angle of the vehicle detector 100 relative to the vertical direction is preferably 15°. Under the above-mentioned design of the tilt angle of the face shell 101 and the vertical direction, the amount of electromagnetic waves reflected from the ground can be reduced, thereby reducing the interference of electromagnetic waves reflected from the ground on the signal of the vehicle detector 100; and the height of the vehicle detector 100 from the ground is about 0.3m, which can also avoid misdetection of low foreign objects such as stones in the lane, and at the same time, it can also concentrate energy in the algorithm calculation area of ​​the first millimeter wave radar module 2 and the second millimeter wave radar module 3, further improving the detection accuracy of the vehicle detector. In order to improve the service life of the vehicle detector, in this embodiment, the material of the mounting box body 1 is preferably a metal material such as stainless steel or aluminum.

[0047] In order to further improve the structural stability and service life of the concealed vehicle detector, the millimeter wave radar module and the human body sensor module are installed in a sensor box 6. Specifically, the millimeter wave radar module and the human body sensor module are connected to a circuit board 7 (such as Fig. 9As shown in the figure, the circuit board 7 connected with the millimeter wave radar module and the human body sensor module is installed in the sensor box 6, so that the millimeter wave radar module, the human body sensor module and the circuit board 7 are installed in an integrated manner. The sensor box 6 protects the millimeter wave radar module, the human body sensor module and the circuit board, and makes the structure of the concealed vehicle detector more concise and beautiful. In order to realize the connection and installation of two millimeter wave radar modules and two human body sensor modules, in this embodiment, the circuit board 7 includes a first circuit board 701, a second circuit board 702 and a third circuit board 703 arranged at intervals, wherein the first millimeter wave radar module 2 and the second millimeter wave radar module 3 are connected to the first circuit board 701, the first human body sensor module 4 is connected to the second circuit board 702, and the second human body sensor module 5 is connected to the third circuit board 703. The circuit board 7 is also connected to a CPU unit, which is connected to the first millimeter wave radar module 2, the second millimeter wave radar module 3, the first human body sensor module 4 and the second human body sensor module 5 circuits, and is used to control the millimeter wave radar module and the human body sensor module, and further avoid the problem of misidentification of pedestrians. In this embodiment, the first millimeter-wave radar module 2 and the second millimeter-wave radar module 3 can adopt 2D radar modules, which have the advantages of low cost and high resolution. In order to realize the control of the millimeter-wave radar module and the human body sensor module, there are 5 CPU units, and the 5 CPU units form a distributed solution. Through comprehensive calculations, a higher response rate and higher reliability are achieved. At the same time, it also has the advantages of low cost and low heat generation.

[0048] In order not to affect the sensing and detection functions of the millimeter-wave radar module and the human body sensor module, the sensor box body 6 is connected to the installation window 103, and a wave-transmitting front cover 601 is provided on the side of the sensor box body 6 close to the driving channel. The first millimeter-wave radar module 2, the second millimeter-wave radar module 3, the first human body sensor module 4, and the second human body sensor module 5 are all arranged within the range of the wave-transmitting front cover 601. The wave-transmitting front cover 601 adopts electromagnetic wave transparent material, so that the first millimeter-wave radar module 2, the second millimeter-wave radar module 3, the first human body sensor module 4, and the second human body sensor module 5 can sensitively sense passing vehicles.

[0049] like Figure 11-Figure 12As shown, the sensor box body 6 is connected to the installation window 103 through a mounting plate 8. Specifically, the sensor box body 6 and the mounting plate 8 are connected through a connecting bracket 9. The connecting bracket 9 is fixedly connected to the side of the sensor box body 6 away from the mounting plate 8. The connecting bracket 9 and the mounting plate 8 are fixedly connected through a connecting piece 10. The mounting plate 8 has a mounting plate hollow position 801 at a position corresponding to the sensor box body 6, and the sensor box body 6 is arranged in the mounting plate hollow position 801. In this embodiment, the connecting piece 10 adopts a pressure riveted stud. In order to achieve a stable connection, there are two connecting pieces 10, and the two connecting pieces 10 are symmetrically connected to the connecting bracket 9 and the two ends of the mounting plate 8.

[0050] A lining plate 11 is also connected in the installation window 103 , and the installation plate 8 is fixedly connected to the lining plate 11 . A lining plate hollow position 1101 is opened in the lining plate 11 corresponding to the position of the installation plate 8 , and the installation plate 8 is adapted to be snapped into the lining plate hollow position 1101 .

[0051] In order to facilitate observation of the switch state of the concealed vehicle detector, the circuit board 7 is also connected to a power indicator light 12 (such as Figure 8 As shown), the power indicator light 12 is set through the wave-transmitting front cover 601. When the vehicle detector is in normal working state, the voltage indicator light 12 is in a lit state.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A concealed vehicle detector embedded in the safety island of a toll station, characterized in that: A accommodating groove is provided on one side of the safety island close to the driving passage, and the vehicle detector is adapted to be accommodated inside the accommodating groove; the vehicle detector comprises: an installation box body, the installation box body is fixedly connected to the accommodating groove, and at least one human body sensor module and at least one millimeter wave radar module are arranged in the installation box body.

2. The concealed vehicle detector embedded in the safety island of a toll station according to claim 1 is characterized in that: There are two millimeter-wave radar modules, which are arranged at an interval, and the length directions of the two millimeter-wave radars are perpendicular to each other.

3. The concealed vehicle detector embedded in the safety island of a toll station according to claim 2 is characterized in that: The center distance between the two millimeter-wave radar modules is 2λ-30λ, where λ is the wavelength of the millimeter-wave radar module at the operating frequency.

4. The concealed vehicle detector embedded in the safety island of a toll station according to claim 2 or 3, characterized in that: There are two human body sensor modules, which are arranged at an interval, and the millimeter wave radar module is arranged between the two human body sensor modules.

5. The concealed vehicle detector embedded in the safety island of a toll station according to claim 4 is characterized in that: The installation box body includes a face shell with an installation space and a back plate connected to the face shell, the face shell is exposed from the accommodating groove, and the face shell has an installation window, and the human body sensor module and the millimeter wave radar module are arranged at the installation window.

6. The concealed vehicle detector embedded in the safety island of a toll station according to claim 5 is characterized in that: The surface shell includes a top plate and a bottom plate spaced apart from and arranged parallel to the top plate, a first side plate and a second side plate are connected to both ends of the top plate and the bottom plate, a panel is connected to one side of the top plate and the bottom plate close to the driving passage, the installation window is opened on the panel, and the panel has an inclination angle of 0-20° relative to the vertical direction.

7. The concealed vehicle detector embedded in the safety island of a toll station according to claim 6 is characterized in that: The millimeter-wave radar module and the human body sensor module are connected to a circuit board. The circuit board connected with the millimeter-wave radar module and the human body sensor module is arranged in a sensor box body. The sensor box body is connected to the installation window. A wave-transmitting front cover is arranged on the side of the sensor box body facing the driving channel.

8. The concealed vehicle detector embedded in the safety island of a toll station according to claim 7 is characterized in that: The sensor box body is connected to the installation window through a mounting plate.

9. The concealed vehicle detector embedded in the safety island of a toll station according to claim 8 is characterized in that: The sensor box body is connected to the mounting plate via a connecting bracket, the connecting bracket is connected to a side of the sensor box body away from the mounting plate, and the connecting bracket is fixedly connected to the mounting plate via a connecting piece.

10. The concealed vehicle detector embedded in the safety island of a toll station according to claim 9 is characterized in that: The mounting plate is connected to a lining plate, and the lining plate is fixedly connected to the panel.

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