Expressway toll station ETC lane alarm false triggering prevention device
By using a combination of road test detection units and delay relays in the ETC lane, the problem of false alarm triggering caused by excessive speed is solved, which improves traffic efficiency and reduces costs.
Patent Information
- Application Number
- CN202422402831.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the ETC lane, when the speed is too fast, the vehicle has triggered the light curtain before the antenna transaction information is uploaded to the industrial control machine, resulting in the false triggering of the yellow flash alarm, increasing the workload of the toll collector and reducing the traffic efficiency.
The combination of the road test detection unit RSU, a vehicle detector, a power-on delay relay, and a power-off delay relay is adopted to delay the transmission of signals to ensure that the vehicle detection signal is later than the antenna transaction information and avoid accidentally triggering the light curtain alarm.
It effectively avoids false alarms in ETC lanes, improves traffic efficiency and reduces costs.
Smart Images
Figure CN223193363U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ETC lane devices, in particular to an ETC lane alarm false triggering prevention device for a toll station on an expressway. Background Art
[0002] After a vehicle enters the ETC lane, the normal transaction logic is to first enter the transaction area. The antenna recognizes the OBU (i.e., on-board ETC) antenna installed on the vehicle and uploads the transaction information to the toll computer (the industrial computer in the toll booth). Then the vehicle continues to pass through the laser light curtain behind the trigger antenna, and the trigger light curtain generates a signal that is also uploaded to the toll computer. However, in actual work, the vehicle speed is too fast. When passing the ETC antenna, the transaction information has not been uploaded to the industrial computer, but the vehicle has already reached the trigger light curtain area. At this time, the toll computer believes that a vehicle without ETC installed has entered the ETC lane, and the industrial computer controls the sound and light alarm to flash a yellow alarm. The toll collector must manually delete the abnormal vehicle information on site before the lane can be used normally. This situation greatly increases the workload of the toll collector and reduces the traffic efficiency of the toll lane. Utility Model Content
[0003] The technical problem to be solved by the utility model is that when a vehicle passes through the front road test detection unit of the ETC lane, the antenna transaction information has not yet been transmitted to the industrial computer, and the laser light curtain behind the antenna is triggered, resulting in the false triggering of the yellow flash alarm. In order to solve the above problem, a device for preventing the false triggering of the ETC lane alarm at a highway toll station is provided.
[0004] The purpose of this utility model is achieved in the following ways:
[0005] A device for preventing false triggering of an ETC lane alarm at a highway toll station comprises a drive test detection unit RSU, a vehicle detector, an audible and visual alarm arranged on the ETC lane, and an industrial computer arranged in the toll booth, wherein the drive test detection unit RSU, the vehicle detector, and the audible and visual alarm are respectively communicatively connected to the industrial computer; the output end of the vehicle detector is connected to the coil of a power-on delay relay, the two ends of the normally open contact of the power-on delay relay are connected to the coil of a power-off delay relay, and the normally open contact of the power-off delay relay is connected to the input end of the industrial computer.
[0006] The vehicle detector adopts a laser vehicle separator or an infrared light curtain vehicle detector. The vehicle detector is located on both sides of the ETC lane, one side is a transmitter and the other side is a receiver.
[0007] The antenna of the drive test detection unit RSU is arranged above the ETC lane, and the vehicle detector is arranged behind the drive test detection unit RSU.
[0008] The beneficial effects of the utility model: the utility model utilizes a power-on delay relay and a power-off delay relay to realize that the transmission signal of the vehicle detector is later than the antenna transaction information, thereby solving the problem of false alarm triggering caused by excessive speed when passing through the ETC lane. The cost is low and the passage efficiency of the ETC lane is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0010] Figure 2 This is a working principle diagram of the vehicle detector in the utility model;
[0011] Among them, 1-Road Test Unit RSU, 2-Vehicle Detector, 3-Power-on Delay Relay, 4-Power-off Delay Relay. DETAILED DESCRIPTION
[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0013] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same technical meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0014] like Figure 1 and Figure 2 As shown, a device for preventing false triggering of an ETC lane alarm at a highway toll station includes a roadside detection unit RSU1, a vehicle detector 2, an audible and visual alarm, and an industrial computer arranged in the toll booth. The roadside detection unit 1, the vehicle detector 2, and the audible and visual alarm are respectively connected to the industrial computer for communication; the output end of the vehicle detector is connected to the coil of a power-on delay relay 3, the two ends of the normally open contact of the power-on delay relay 3 are connected to the coil of a power-off delay relay 4, and the normally open contact of the power-off delay relay 4 is connected to the input end of the industrial computer.
[0015] The vehicle detector 2 of the present invention adopts a laser vehicle separator or an infrared light curtain vehicle detector. The vehicle detector 2 is located on both sides of the ETC lane, with a transmitter on one side and a receiver on the other side. A light curtain is formed between the transmitter and the receiver. When a vehicle passes through the light curtain, the light curtain is blocked by the vehicle, and the receiving end of the vehicle detector generates an incoming vehicle signal and transmits the signal to the industrial computer to realize ETC lane vehicle detection.
[0016] The antenna of the drive test detection unit RSU1 is set above the ETC lane, and the vehicle detector 2 is set behind the drive test detection unit RSU1. Figure 1The direction of the arrow in the middle indicates the direction of oncoming vehicles.
[0017] The working principle of the present invention is as follows: when an ETC vehicle enters the communication area of the road test detection unit RSU1, the OBU on the vehicle conducts transactions with the antenna of the road test detection unit RSU1. When the vehicle passes through the light curtain of the vehicle detector 2, the DC 24V output from the output end of the vehicle detector 2 first passes through a power-on delay relay 3 and then passes through a power-off delay relay 4 to be transmitted to the industrial computer; the purpose of the power-on delay relay 3 is to delay the power input of the power-off delay relay 4, because the time it takes for the vehicle to pass through the triggering light curtain is very short, and the 24V power supply of the power-off delay relay 4 is taken from the 24V power supply generated after the light curtain of the triggering vehicle detector 2 is triggered. At this time, no matter how fast or slow the vehicle speed is, the trigger signal of the triggering light curtain will be relatively slower than the time it takes for the antenna transaction signal of the road test detection unit RSU1 to reach the toll computer (industrial computer) in the toll booth, so no false alarm will occur.
[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.
Claims
1. A device for preventing false triggering of an ETC lane alarm at a toll booth on a highway, comprising a road test detection unit RSU (1), a vehicle detector (2), an audible and visual alarm arranged on the ETC lane, and an industrial computer arranged in the toll booth, wherein the road test detection unit RSU (1), the vehicle detector (2), and the audible and visual alarm are respectively connected to the industrial computer for communication; and characterized in that: The output end of the vehicle detector (2) is connected to the coil of the power-on delay relay (3), the two ends of the normally open contact of the power-on delay relay (3) are connected to the coil of the power-off delay relay (4), and the normally open contact of the power-off delay relay (4) is connected to the input end of the industrial computer.
2. The device for preventing false triggering of ETC lane alarms at highway toll stations according to claim 1, characterized in that: The vehicle detector (2) adopts a laser vehicle separator or an infrared light curtain vehicle detector. The vehicle detector is located on both sides of the ETC lane, with one side being a transmitter and the other side being a receiver.
3. The device for preventing false triggering of ETC lane alarms at highway toll stations according to claim 1, characterized in that: The antenna of the road test detection unit RSU (1) is arranged above the ETC lane, and the vehicle detector (2) is arranged behind the road test detection unit RSU (1).