Method for detecting infrared vehicle separation signal and device thereof
A vehicle separation and signal detection technology, applied in the field of infrared vehicle separation signal detection, can solve the problems of reducing the detection accuracy of the system, increasing the cost, losing detection light, etc., and achieving the effect of eliminating the phenomenon of car following, enhancing the adaptability and high detection accuracy
Inactive Publication Date: 2010-10-27
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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This does not increase the cost, and when an infrared receiver or transmitter fails, there will be a loss of space and a plane of detection light, which greatly reduces the detection accuracy of the system
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[0037] Further detailed description will be given below in conjunction with the accompanying drawings and embodiments.
[0038] Such as figure 1 As shown, the present invention includes:
[0039] The transmitting end of the device is composed of a transmitting control module and at least one infrared transmitting module, among which:
[0040] Infrared emission modules are arranged in a linear manner to detect the vehicle in the detection area, and send the detection signal to the infrared receiving module through the cyclic modulation of the emission control module;
[0041] The emission control module controls the scanning timing and infrared signal code modulation of the infrared emission module;
[0042] The receiving end of the device is composed of a receiving control module and at least one infrared receiving module, among which:
[0043]Infrared receiving module, arranged linearly, detects the vehicle in the detection area, receives the optical signal of the infrared...
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The invention relates to a road automatic toll collection technology, in particular to an infrared vehicle separation signal detection method used for detecting of a road automatic toll collection system, and the device thereof. The invention adopts a single-send but multiple-receive scan round mode, and realizes decoding, and enlarging the received infrared signal of a detecting area through an infrared carrier frequency modulation and the scan round of an infrared beam, and regulates automatically a receiving gain; a control program performs region detection, judges the sizes of screening equipment in a detection region, and performs a detection, an alarm and a status display for a separation signal between two vehicles in the detection region. The invention has the advantages that the detection precision is higher, and the adaptivity is strong; the invention is applied to a road toll collection system, and the invention can reliably detect and separate a semitrailer, an independenttrailer and a rigid truck which pass.
Description
technical field [0001] The invention relates to the technology of highway automatic toll collection, in particular to an infrared vehicle separation signal detection method and a device thereof for the detection of a highway automatic toll collection system. Background technique [0002] The infrared vehicle separator is specially designed for the vehicle separation detection of the highway automatic toll collection system. It can completely eliminate the phenomenon of following vehicles and reliably separate the semi-trailer, full-trailer and single vehicle when applied in the system. It ensures the one-to-one correspondence between the charging data of the system and the vehicles, and there will be no phenomenon of more or less vehicles due to misjudgment. [0003] Most of the traditional infrared vehicle separators use a light curtain formed by a cycle of sending and receiving to detect vehicles. That is, one beam of light corresponds to one infrared receiving head, and ...
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IPC IPC(8): G07B15/00G01V8/10G02F1/00G07B15/06
Inventor 毕欣曹云侠马钺
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI