Overspeed snapshot and light supplement lamp detection device based on ETC portal frame

Abstract

The utility model provides an electronic toll collection (ETC) portal frame-based overspeed snapshot and fill light detection device, which comprises a portal frame, a platform, a flange and a camera, the top of the portal frame is fixedly connected with the platform through a triangular support rod, the top surface of the platform is fixedly connected with the flange, the angle-adjustable camera is arranged above the flange, and the angle-adjustable camera is arranged above the flange. The top of the platform is provided with a speed measuring radar, the top of the platform is provided with a light supplementing lamp, the light supplementing lamp is provided with an inclined irradiation face, and the light supplementing lamp and the speed measuring radar are located on the two sides of the camera respectively. The vehicle-mounted dynamic detection device has the advantages that the vehicle-mounted dynamic detection device can dynamically detect the light supplement lamp in a vehicle-mounted manner; normal traffic is not affected, and road traffic does not need to be closed in the measurement process; the detection efficiency is high, a single person can drive to pass below the portal frame, manpower and time are not wasted, and the measurement behavior is safe and reliable; the detection index is perfect, the obtained index is the average illuminance, and meanwhile the flash frequency and the effective illuminance can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of speed measurement and capture, in particular to an overspeed capture and fill light detection device based on an ETC gantry. Background Art

[0002] The ETC gantry strobe fill light is an important component of the ETC gantry on the highway. Its main function is to improve the imaging quality of the gantry camera in low light conditions such as at night. It is an important part of the intelligent transportation system. If the gantry ETC fill light is too high in illumination, it will produce glare, reduce the driver's visual ability to distinguish the road environment ahead, and easily cause traffic safety accidents. If it is too low, it will affect the imaging quality of the camera. Therefore, it is necessary to regularly check the gantry ETC strobe fill light whose illumination does not meet the standard.

[0003] The traditional method of measuring illuminance is to use a handheld illuminance meter for detection, but it has the following defects: 1. When a handheld illuminance meter is used to detect stroboscopic fill lights, it can only measure the average illuminance, but cannot measure the flickering frequency and effective illuminance, and the detection indicators are not perfect; 2. For sections of roads that are open to traffic, road closures are required for detection, which has low detection efficiency and high detection costs; 3. Manual detection operations at night have low measurement efficiency, are time-consuming, occupy a lot of human resources, and are prone to traffic accidents, posing serious traffic safety hazards. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] To this end, one purpose of the utility model is to propose an overspeed capture and fill light detection device based on an ETC gantry to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an overspeed capture and fill light detection device based on an ETC gantry, comprising a gantry, a platform, a flange, and a camera. The top of the gantry is fixedly connected to the platform through a triangular support rod, the top surface of the platform is fixedly connected to the flange, and a camera with an adjustable angle is installed above the flange;

[0007] A speed measuring radar is installed on the top of the platform, and a fill light is installed on the top of the platform;

[0008] The fill light has an oblique illumination surface, and the fill light and the speed measuring radar are respectively located on both sides of the camera;

[0009] An illuminometer is provided on the irradiation end of the fill light, and connectors are fixedly connected on both sides of the illuminometer;

[0010] The illuminometer is installed on the top of the vehicle, the output end of the illuminometer is connected to a data processing device, the output end of the data processing device is connected to a post-processing device, and the data processing device and the post-processing device are both vehicle-mounted.

[0011] Preferably, any of the above solutions is that the flange is connected to the platform by screws at multiple points, and the camera is specifically a snapshot camera.

[0012] Adopting the above technical solution: This device consists of two parts. The first part is the gantry and the speeding capture part, which is composed of the gantry, platform, flange, camera, speed radar, and fill light structure.

[0013] Among them, the camera is a high-definition camera that can clearly capture the details of the vehicle, including the license plate number, model, color, etc. In addition, the camera is also equipped with a high-speed shutter that can quickly capture images when the vehicle is driving at high speed.

[0014] Speed ​​radar measures the speed of a vehicle by emitting microwave signals and receiving the reflected signals. The radar can accurately measure the speed of the vehicle and send the data to the host at the back end.

[0015] The fill light provides sufficient light and has the characteristics of high brightness and short flash time, which can illuminate the vehicle in an instant.

[0016] The second part, the vehicle-mounted detection part, consists of a illuminance meter, a data processing device, and a post-processing device structure.

[0017] The illuminometer is an electronic illuminometer available on the market. The illuminometer, the data processing device and the post-processing device are all installed on the vehicle. The hardware carrier of the data processing device and the post-processing device is a computer.

[0018] Preferably, any of the above schemes is that the speed measuring radar is specifically a Doppler narrow wave, and the rear ends of the speed measuring radar and the camera are connected to a speed measuring host.

[0019] Adopting the above technical solution: when the device is implemented, data collection. Let the vehicle equipped with the illuminance meter drive under the fill light, the fill light will flicker during normal operation, the illuminance meter will collect the flickering signal of the fill light, obtain the time and illuminance of the sampling point, wherein the sampling frequency of the illuminance meter is more than ten times the flickering frequency of the fill light, and connect all adjacent sampling points to obtain the sampling waveform;

[0020] Step 2: Data processing. The data processing device automatically selects the peak part of the sampling waveform, which includes the maximum illumination point in the sampling waveform and some points in the surrounding area before and after;

[0021] Step 3: Result calculation. The post-processing device calculates the flashing frequency, effective illuminance and average illuminance of the fill light, and directly obtains the frequency and illuminance calculation results;

[0022] Step 4: Debugging. According to the average illuminance (I avg ), effective illuminance value (I eff ) and the illuminance values ​​required by the standard (for example: I eff ≤3001x, I avg ≤50lx), the proportionality coefficient k1=I avg / 50, k2=I eff / 300, debug the fill light that does not meet the standard requirements. During debugging, place the handheld illuminance meter at a relatively close distance to the corresponding fill light on the ETC gantry maintenance channel and keep it fixed (0.1m--1m), and point the handheld illuminance meter detection sensor directly at the fill light, and measure its illuminance value as a. Then adjust the light intensity according to different situations. The specific adjustment methods include adjusting through software light intensity parameters, adjusting the brightness adjustment potentiometer in the fill light control circuit board, connecting a sliding resistor in series in the fill light control circuit, and connecting a sliding resistor with a resistance value (5W, 20Ω adjustable) in series in the driving circuit of the LED light board.

[0023] In this device, the illuminance meter, the data processing device, and the post-processing device are all vehicle-mounted. The illuminance meter can be installed on the roof by connecting screws through a connector with holes, and the screws are driven into the roof. The data processing device and the post-processing device can be directly bonded to the roof through the adhesive backing, thereby achieving vehicle-mounted installation, which is also a commonly used installation method in reality.

[0024] After the illuminance meter, data processing device and post-processing device are installed on the roof, the three are connected by physical cables.

[0025] The core advantages of this device are:

[0026] It does not affect normal traffic, and there is no need to close the road traffic during the measurement process;

[0027] The detection efficiency is high, and a single person can drive under the gantry, which saves manpower and time, and the measurement behavior is safe and reliable;

[0028] The detection indicators are complete, and the obtained indicators are average illuminance, and the flash frequency and effective illuminance can also be obtained. This achievement has been successfully applied to the rapid detection of ETC gantry strobe fill lights on many highways, providing strong data support for the owner units to carry out subsequent fill light rectification work. This achievement will not affect road traffic and traffic safety, and the detection efficiency is greatly improved, and the detection cost is greatly reduced.

[0029] Preferably, any of the above schemes is that the fill light is specifically a gas strobe light, and the illumination of the fill light is adjustable.

[0030] Preferably, any of the above solutions has a collection frequency of ≥2500 Hz, and the illuminometer integrates a photoelectric sensor and a cosine corrector.

[0031] Preferably, any of the above schemes is that the data processing device converts the optical signal into a digital signal and then converts it into a light illumination value and sends it to a post-processing device, and the post-processing device obtains a complete data waveform according to the light illumination value.

[0032] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0033] The speeding capture and fill light detection device based on the ETC gantry achieves the following advantages through the coordinated setting of the illuminance meter, the data processing device, and the post-processing device:

[0034] It does not affect normal traffic, and there is no need to close the road traffic during the measurement process;

[0035] The detection efficiency is high, and a single person can drive under the gantry, which saves manpower and time, and the measurement behavior is safe and reliable;

[0036] The detection indicators are complete, and the acquired indicators are average illuminance. At the same time, the flash frequency and effective illuminance can also be obtained.

[0037] This device has been successfully used for rapid detection of ETC gantry strobe fill lights on multiple highways without affecting road traffic and traffic safety. The detection efficiency is greatly improved and the detection cost is greatly reduced.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0040] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0041] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle;

[0042] Figure 3 It is a structural schematic diagram of the utility model from a third viewing angle;

[0043] Figure 4This is a schematic diagram of the process of collecting data for the utility model.

[0044] In the figure: 1-gantry, 2-platform, 3-flange, 4-camera, 5-speed radar, 6-fill light, 7-illuminance meter, 8-connector, 9-data processing device, 10-post-processing device. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] like Figure 1-4 As shown, the present application includes a gantry 1, a platform 2, a flange 3, and a camera 4. The top of the gantry 1 is fixedly connected to the platform 2 via a triangular support rod, the top surface of the platform 2 is fixedly connected to the flange 3, and a camera 4 with an adjustable angle is installed above the flange 3;

[0048] A speed radar 5 is installed on the top of the platform 2, and a fill light 6 is installed on the top of the platform 2;

[0049] The fill light 6 has an oblique illumination surface, and the fill light 6 and the speed radar 5 are respectively located on both sides of the camera 4;

[0050] An illuminometer 7 is provided on the irradiation end of the fill light 6, and connectors 8 are fixedly connected to both sides of the illuminometer 7;

[0051] The illuminometer 7 is installed on the top of the vehicle, the output end of the illuminometer 7 is connected to a data processing device 9, and the output end of the data processing device 9 is connected to a post-processing device 10. Both the data processing device 9 and the post-processing device 10 are vehicle-mounted.

[0052] Embodiment 1: The flange 3 is connected to the platform 2 by screws at multiple points, and the camera 4 is specifically a snapshot camera. The device includes two parts. The first part is the gantry and the speeding snapshot part, which is composed of the gantry 1, the platform 2, the flange 3, the camera 4, the speed radar 5, and the fill light 6.

[0053] Among them, the camera 4 is a high-definition camera, which can clearly capture the details of the vehicle, including the license plate number, model, color, etc. In addition, the camera is also equipped with a high-speed shutter, which can quickly capture images when the vehicle is traveling at high speed.

[0054] The speed radar 5 measures the speed of the vehicle by emitting microwave signals and receiving the reflected signals. The radar can accurately measure the speed of the vehicle and send the data to the host at the back end.

[0055] The fill light 6 provides sufficient light and has the characteristics of high brightness and short flash time, and can illuminate the vehicle in an instant.

[0056] The second part, the vehicle-mounted detection part, is composed of a light meter 7, a data processing device 9, and a post-processing device 10.

[0057] The illuminometer 7 is an electronic illuminometer available on the market. The illuminometer 7, the data processing device 9, and the post-processing device 10 are all installed on the vehicle. The hardware carrier of the data processing device 9 and the post-processing device 10 is a computer. The speed radar 5 is specifically a Doppler narrow wave. The rear ends of the speed radar 5 and the camera 4 are connected to the speed measuring host. The fill light 6 is specifically a gas flash light, and the illuminance of the fill light 6 is adjustable. The acquisition frequency of the illuminometer 7 is ≥2500HZ, and the illuminometer 7 integrates a photoelectric sensor and a cosine corrector. The data processing device 9 converts the optical signal into a digital signal and then converts it into a light illuminance value and sends it to the post-processing device 10. The post-processing device 10 obtains a complete data waveform according to the light illuminance value.

[0058] Embodiment 2: The illuminance meter 7 is mounted on the vehicle through the connector 8. The illuminance meter 7 includes a photoelectric sensor and a cosine corrector connected to the data processing device. The vehicle passes under the gantry normally, collects the stroboscopic signal of the fill light 6, obtains the time and illuminance of the sampling point, and the sampling frequency is more than 10 times the flashing frequency of the fill light;

[0059] Select the peak part of the sampling waveform, which includes the maximum illumination point in the sampling waveform and some points in the surrounding areas before and after;

[0060] c. Set the illumination threshold, compare the illumination of the sampling points with the illumination threshold one by one, and get the rising edge sampling point set R = (r0, r1…r n ) and the falling edge sampling point set D = (d0, d1... d n ) ; r i and d i They are all serial numbers of sampling points, i=0, 1..m; m is the number of rising and falling edge sampling points of the peak part.

[0061] d. Calculate the flicker frequency, average illuminance, and effective illuminance. The calculation formula for the flicker frequency F is: F=1 / T, where: T1 is the sampling period of the sampling device, and T is the flicker period.

[0062] The working principle of the utility model is as follows:

[0063] When the device is implemented, data collection is performed. A vehicle equipped with an illuminometer 7 is driven under the fill light 6. The fill light 6 strobes during normal operation. The illuminometer 7 collects the stroboscopic signal of the fill light 6 and obtains the time and illuminance of the sampling point. The sampling frequency of the illuminometer 7 is more than ten times the flashing frequency of the fill light 6. All adjacent sampling points are connected to obtain a sampling waveform.

[0064] Step 2: Data processing. The data processing device 9 automatically selects the peak portion of the sampling waveform, which includes the maximum illumination point in the sampling waveform and some points in the surrounding area before and after;

[0065] Step 3: Calculation of results. The post-processing device 10 calculates the flashing frequency, effective illuminance and average illuminance of the fill light, and directly obtains the frequency and illuminance calculation results;

[0066] Step 4: Debugging. According to the average illuminance (I avg ), effective illuminance value (I eff ) and the illuminance values ​​required by the standard (for example: I eff ≤3001x, I avg ≤50lx), the proportionality coefficient k1=I avg / 50, k2=I eff / 300, debug the fill light 6 that does not meet the standard requirements. During debugging, place a handheld illuminance meter at a relatively close distance to the corresponding fill light 6 on the ETC gantry maintenance channel and keep it fixed (0.1m--1m), and point the handheld illuminance meter detection sensor directly at the fill light 6, and measure its illuminance value as a. Then adjust the light intensity according to different situations. The specific adjustment methods include adjusting the light intensity parameters through software, adjusting the brightness adjustment potentiometer in the fill light 6 control circuit board, connecting a sliding resistor in series in the fill light 6 control circuit, and connecting a sliding resistor with a resistance value (5W, 20Ω adjustable) in series in the driving circuit of the LED light board.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] The speeding capture and fill light detection device based on the ETC gantry achieves the following advantages through the coordinated arrangement of the illuminance meter 7, the data processing device 9, and the post-processing device 10:

[0069] It does not affect normal traffic, and there is no need to close the road traffic during the measurement process;

[0070] The detection efficiency is high, and a single person can drive under the gantry 1, which does not waste manpower and time, and the measurement behavior is safe and reliable;

[0071] The detection index is complete, and the acquired index is the average illuminance. At the same time, the flash frequency and effective illuminance can also be obtained.

[0072] This device has been successfully used for rapid detection of ETC gantry strobe fill lights on multiple highways without affecting road traffic and traffic safety. The detection efficiency is greatly improved and the detection cost is greatly reduced.

Claims

1. An overspeed capture device based on an ETC gantry, characterized in that: It comprises a gantry (1), a platform (2), a flange (3), and a camera (4); the top of the gantry (1) is fixedly connected to the platform (2) via a triangular support rod; the top surface of the platform (2) is fixedly connected to the flange (3); and a camera (4) with an adjustable angle is installed above the flange (3); A speed measuring radar (5) is installed on the top of the platform (2), and a fill light (6) is installed on the top of the platform (2); The fill light (6) has an oblique illumination surface, and the fill light (6) and the speed measuring radar (5) are respectively located on both sides of the camera (4); An illuminometer (7) is provided on the irradiation end of the supplementary light (6), and connectors (8) are fixedly connected to both sides of the illuminometer (7); The illuminometer (7) is mounted on the top of a vehicle, the output end of the illuminometer (7) is connected to a data processing device (9), the output end of the data processing device (9) is connected to a post-processing device (10), and the data processing device (9) and the post-processing device (10) are both vehicle-mounted.

2. The speeding capture device based on the ETC gantry as claimed in claim 1, characterized in that: The flange (3) is connected to the platform (2) via screws at multiple points, and the camera (4) is specifically a snapshot camera.

3. The speeding capture device based on the ETC gantry as claimed in claim 2, characterized in that: The speed measuring radar (5) is specifically a Doppler narrow wave, and the rear ends of the speed measuring radar (5) and the camera (4) are connected to a speed measuring host.

4. A fill light detection device based on an ETC gantry, applied to the speeding capture device based on an ETC gantry as described in any one of claims 1 to 3, characterized in that: The fill light (6) is specifically a gas strobe light, and the illumination of the fill light (6) is adjustable.

5. The fill light detection device based on the ETC gantry as claimed in claim 4, characterized in that: The sampling frequency of the illuminometer (7) is ≥ 2500 Hz, the illuminometer (7) integrates a photoelectric sensor and a cosine corrector, and the sampling frequency of the illuminometer (7) is more than ten times the flickering frequency of the fill light (6).

6. The fill light detection device based on the ETC gantry as claimed in claim 5, characterized in that: The data processing device (9) converts the optical signal into a digital signal and then converts it into a light illumination value and sends it to a post-processing device (10). The post-processing device (10) obtains a complete data waveform according to the light illumination value.

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