CN107884345B - Bidirectional remote sensing detection system and detection method for tail gas of motor vehicle - Google Patents
Bidirectional remote sensing detection system and detection method for tail gas of motor vehicle Download PDFInfo
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- CN107884345B CN107884345B CN201711141879.1A CN201711141879A CN107884345B CN 107884345 B CN107884345 B CN 107884345B CN 201711141879 A CN201711141879 A CN 201711141879A CN 107884345 B CN107884345 B CN 107884345B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1734—Sequential different kinds of measurements; Combining two or more methods
- G01N2021/1736—Sequential different kinds of measurements; Combining two or more methods with two or more light sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1793—Remote sensing
Abstract
The invention discloses a bidirectional remote sensing detection system for tail gas of a motor vehicle, which comprises a horizontally fixed remote sensing detection host, a reflector, a panoramic camera, a first camera and a second camera, wherein the horizontally fixed remote sensing detection host and the reflector are oppositely arranged at two sides of a road of the motor vehicle, the panoramic camera, the first camera and the second camera are fixedly arranged on a gantry rod above the motor vehicle, and the first camera and the second camera are arranged in opposite directions and respectively correspond to bidirectional motor vehicle lanes. The invention solves the problem of low data validity and accuracy when the traditional horizontal fixed remote sensing monitoring system detects the tail gas of the motor vehicle in the bidirectional lane environment, and effectively improves the detection success rate and the detection data accuracy.
Description
Technical Field
The invention relates to a remote sensing detection system and a detection method thereof, in particular to a bidirectional remote sensing detection system for motor vehicle tail gas and a detection method thereof.
Background
In recent years, with the rapid development of national economy, the quantity of motor vehicles in China is remarkably increased, and the negative influence of motor vehicle tail gas on the atmospheric environment is increasingly serious. Especially on the roads in urban areas, the traffic jam caused by the sudden increase of the number of the motor vehicles further aggravates the harm of the tail gas of the motor vehicles. Therefore, it is very important to detect pollutants in the exhaust of motor vehicles, especially in the exhaust of motor vehicles running on urban main roads. The detection principle of the tail gas is as follows: the detection light emitted by the radiation source passes through the tail gas smoke group and then is reflected to the light receiving device where the radiation source is located by the reflecting device, the light received by the light receiving device can be absorbed by high-concentration pollutants in the tail gas smoke group to weaken the light intensity, and the concentration of each pollutant in the smoke group can be obtained by comparing the difference of the light intensity of the emitted light and the light intensity of the received light according to the Lambert beer law and a combustion equation.
The hardware part of the traditional horizontal fixed remote sensing monitoring system consists of a host, a reflector, a license plate recognition camera and a data processing host. The host machine mainly comprises three parts, namely an infrared and ultraviolet absorption spectrum method polluted gas detection unit, a light-tight smoke intensity detection unit and an environmental parameter measurement unit, is responsible for detecting the components of the tail gas of the motor vehicle, the concentration value of the related gas, the light-tight smoke intensity and other data, and sends the detected data to a control software platform of the remote sensing monitoring system for the tail gas of the motor vehicle through a local area network; the reflector is arranged opposite to a road where the host is located, is responsible for calibrating the host, receives reflected ultraviolet light, infrared light and the like, and is matched with the host to detect the tail gas of the motor vehicle; the license plate recognition camera is responsible for road condition monitoring and capturing and recognizing the license plate of the motor vehicle; the data processing host is responsible for processing the detection data and generating a detection result. The traditional horizontal remote sensing monitoring system can only detect vehicles running in one direction and detect the vehicles running in the other direction through a speed measurement system or a one-way speed measurement radar trigger system, and because the system does not set a trigger system and effectively identifies the vehicles running in the other direction, the vehicles running in the other direction cannot be effectively identified and also cannot be effectively detected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bidirectional remote sensing detection system for motor vehicle exhaust and a detection method thereof, which solve the problem of influence of vehicles opposite to a bidirectional lane on detection in the detection process and achieve the aim of effectively carrying out remote sensing detection on the motor vehicle exhaust.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a two-way remote sensing detection system for tail gas of motor vehicles is characterized in that: contain horizontal fixed remote sensing and detect host computer, reflector, panoramic camera, first camera and second camera, horizontal fixed remote sensing detects host computer and reflector and sets up relatively in motor vehicle road both sides, and panoramic camera, first camera and second camera are fixed to be set up on the gantry rod of motor vehicle top, and first camera and second camera set up opposite direction and correspond two-way motor vehicle lane respectively.
Furthermore, the horizontal fixed remote sensing detection host comprises an infrared and ultraviolet absorption spectrum method polluted gas detection unit, an opaque smoke degree detection unit, an automatic license plate identification and recording unit, a road condition identification unit, a data processing unit, an electronic control and data center unit and a remote sensing detection area monitoring unit, wherein the electronic control and data center unit is a control core of the horizontal fixed remote sensing detection host and is used for processing data results generated by all detection units and controlling the cooperative operation of all units, the infrared and ultraviolet absorption spectrum method polluted gas detection unit is connected with the electronic control and data center unit and is used for analyzing and processing pollutant gas of collected signals, the opaque smoke degree detection unit is connected with the electronic control and data center unit and is used for detecting the light property of the tail gas of the motor vehicle, and the automatic license plate identification and recording unit is connected with the electronic control and data center unit and is used for carrying out the analysis and the light property of the license plate number of the inspected vehicle And the remote sensing detection area monitoring unit is connected with the electronic control and data center unit and is used for detecting the vehicle running conditions of the remote sensing detection area and the vehicle monitoring area.
Furthermore, the coverage area of the panoramic camera is a rectangular virtual coil covering the forward and reverse automobile lanes under the gantry rod, and the coverage areas of the first camera and the second camera are rectangular virtual coils covering the one-way automobile lanes.
A detection method of a bidirectional remote sensing detection system for tail gas of a motor vehicle is characterized by comprising the following steps:
the method comprises the following steps: a monitoring area is defined by setting a virtual coil of a camera, a vehicle normally runs and touches the edge of the virtual coil monitored by the camera in real time, so that information that the vehicle enters the monitoring area is obtained, and a signal that the vehicle enters the monitoring area is sent to an electronics control unit;
step two: the method comprises the steps that a remote sensing detection area is defined through a virtual coil of a panoramic camera, real-time image acquisition is carried out on the remote sensing detection area, the technology that the virtual coil is cut is adopted to judge the vehicle entering and exiting monitoring or detection area, real-time monitoring is carried out on the remote sensing detection area, and signals of the vehicle entering or exiting are sent to an electronic control unit;
step three: the method comprises the following steps that a first camera and a second camera respectively monitor monitoring areas of a forward lane and a reverse lane in real time, only one vehicle is detected to enter the monitoring areas at the same time, a remote sensing monitoring area monitoring unit sends a detection starting signal to an electronic control unit, and the electronic control unit coordinately controls the detection unit to detect;
step four: the first camera and the second camera simultaneously identify that a plurality of vehicles enter the monitoring area, the system sends a non-detection signal, and the vehicles are not detected when passing.
Further, the specific process of detecting that only one vehicle enters the monitoring area at the same time in the third step is as follows:
1) if the only vehicle passing through the forward lane normally passes through the remote sensing detection area to complete detection, and in the vehicle remote sensing detection process, the monitoring area of the second camera does not detect that other vehicles enter, the system confirms that the only vehicle detection of the forward lane is completed, the detection data is valid, and meanwhile, the next detection processing is carried out;
2) if the only vehicle passing through the forward lane enters the remote sensing detection area, and before the remote sensing detection of the forward vehicle is not finished, the monitoring area of the second camera monitors that the vehicle enters: a, if the panoramic camera does not recognize that a vehicle enters a reverse lane in a remote sensing detection area, the system confirms that the only vehicle passing through the forward lane at this time is effectively detected in a remote sensing manner; b, recognizing that vehicles enter a reverse lane in a remote sensing detection area by the panoramic camera, and confirming that the only vehicle passing the forward lane at this time is invalid in remote sensing detection by the system;
and c, if the vehicles in the forward lane and the vehicles in the reverse lane enter the monitoring areas of the first camera and the second camera at the same time, the bidirectional running vehicles shield the detection light path, the system sends a non-detection signal, and the vehicles passing this time are not detected.
Furthermore, the interval time of the two-way running vehicle entering the remote sensing detection area is not more than 1s, the tail gas of the two vehicles is not completely diffused in the remote sensing detection area, and the remote sensing monitoring system automatically judges the detection data to be invalid.
Compared with the prior art, the invention has the following advantages and effects: the invention solves the problem of low data validity and accuracy when the traditional horizontal fixed remote sensing monitoring system detects the tail gas of the motor vehicle in the bidirectional lane environment, and effectively improves the detection success rate and the detection data accuracy.
Drawings
FIG. 1 is a schematic diagram of a two-way remote vehicle emissions detection system of the present invention.
Fig. 2 is a schematic diagram of the horizontal stationary remote sensing host of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
As shown in figure 1, the bidirectional remote sensing detection system for the tail gas of the motor vehicle comprises a horizontally fixed remote sensing detection host machine 1, a reflector 2, a panoramic camera 3, a first camera 4 and a second camera 5, wherein the horizontally fixed remote sensing detection host machine 1 and the reflector 2 are oppositely arranged on two sides of a road of the motor vehicle, the panoramic camera 3, the first camera 4 and the second camera 5 are fixedly arranged on a gantry rod 6 above the motor vehicle, and the first camera 4 and the second camera 5 are arranged in opposite directions and respectively correspond to bidirectional motor vehicle lanes.
As shown in FIG. 2, the horizontal stationary remote sensing detection host 1 comprises an infrared and ultraviolet absorption spectrum method polluted gas detection unit, an opaque smoke detection unit, an automatic license plate identification and recording unit, a road condition identification unit, a data processing unit, an electronic control and data center unit and a remote sensing detection area monitoring unit, wherein the electronic control and data center unit is a control core of the horizontal stationary remote sensing detection host and is used for processing data results generated by the detection units and controlling the cooperative operation of the detection units, the infrared and ultraviolet absorption spectrum method polluted gas detection unit is connected with the electronic control and data center unit and is used for analyzing and processing pollutant gas of collected signals, the opaque smoke detection unit is connected with the electronic control and data center unit and is used for detecting the light of tail gas of a motor vehicle, and the automatic license plate identification and recording unit is connected with the electronic control and data center unit and is used for analyzing and recording the license plate number of a passing vehicle And the remote sensing detection area monitoring unit is connected with the electronic control and data center unit and is used for detecting the vehicle running conditions of the remote sensing detection area and the vehicle monitoring area.
The panoramic camera coverage area is a rectangular virtual coil covering the forward and reverse motor vehicle lanes under the gantry rod, and the first camera and the second camera coverage area are rectangular virtual coils covering the one-way motor vehicle lanes.
A detection method of a bidirectional remote sensing detection system for tail gas of a motor vehicle comprises the following steps:
the method comprises the following steps: a monitoring area is defined by setting a virtual coil of a camera, a vehicle normally runs and touches the edge of the virtual coil monitored by the camera in real time, so that information that the vehicle enters the monitoring area is obtained, and a signal that the vehicle enters the monitoring area is sent to an electronics control unit;
step two: the method comprises the steps that a remote sensing detection area is defined through a virtual coil of a panoramic camera, real-time image acquisition is carried out on the remote sensing detection area, the technology that the virtual coil is cut is adopted to judge the vehicle entering and exiting monitoring or detection area, real-time monitoring is carried out on the remote sensing detection area, and signals of the vehicle entering or exiting are sent to an electronic control unit;
step three: the method comprises the following steps that a first camera and a second camera respectively monitor monitoring areas of a forward lane and a reverse lane in real time, only one vehicle is detected to enter the monitoring areas at the same time, a remote sensing monitoring area monitoring unit sends a detection starting signal to an electronic control unit, and the electronic control unit coordinately controls the detection unit to detect;
step four: the first camera and the second camera simultaneously identify that a plurality of vehicles enter the monitoring area, the system sends a non-detection signal, and the vehicles are not detected when passing.
The specific process of only detecting that one vehicle enters the monitoring area at the same time in the third step is as follows:
1) if the only vehicle passing through the forward lane normally passes through the remote sensing detection area to complete detection, and in the vehicle remote sensing detection process, the monitoring area of the second camera does not detect that other vehicles enter, the system confirms that the only vehicle detection of the forward lane is completed, the detection data is valid, and meanwhile, the next detection processing is carried out;
2) if the only vehicle passing through the forward lane enters the remote sensing detection area, and before the remote sensing detection of the forward vehicle is not finished, the monitoring area of the second camera monitors that the vehicle enters: a, if the panoramic camera does not recognize that a vehicle enters a reverse lane in a remote sensing detection area, the system confirms that the only vehicle passing through the forward lane at this time is effectively detected in a remote sensing manner; b, recognizing that vehicles enter a reverse lane in a remote sensing detection area by the panoramic camera, and confirming that the only vehicle passing the forward lane at this time is invalid in remote sensing detection by the system;
and c, if the vehicles in the forward lane and the vehicles in the reverse lane enter the monitoring areas of the first camera and the second camera at the same time, the bidirectional running vehicles shield the detection light path, the system sends a non-detection signal, and the vehicles passing this time are not detected.
The interval time of the two-way running vehicle entering the remote sensing detection area is not more than 1s, the tail gas of the two vehicles is not completely diffused in the remote sensing detection area, and the remote sensing monitoring system automatically judges the detection data to be invalid.
The invention solves the problem of low data validity and accuracy when the traditional horizontal fixed remote sensing monitoring system detects the tail gas of the motor vehicle in the bidirectional lane environment, and effectively improves the detection success rate and the detection data accuracy.
The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (2)
1. A detection method of a bidirectional remote sensing detection system for tail gas of a motor vehicle comprises a horizontally fixed remote sensing detection host, a reflector, a panoramic camera, a first camera and a second camera, wherein the horizontally fixed remote sensing detection host and the reflector are oppositely arranged on two sides of a motor vehicle road, the panoramic camera, the first camera and the second camera are fixedly arranged on a gantry rod above the motor vehicle, the first camera and the second camera are arranged in opposite directions and respectively correspond to bidirectional motor vehicle lanes, the horizontally fixed remote sensing detection host comprises an infrared absorption spectroscopy polluted gas detection unit, an opaque smoke detection unit, a license plate automatic identification recording unit, a road condition identification unit, a data processing unit, an electronic control and data center unit and a remote sensing detection area monitoring unit, and the electronic control and data center unit is a control core of the horizontally fixed remote sensing detection host and is used for processing all the parts The detection unit generates data results and controls the cooperative operation of the units, the infrared and ultraviolet absorption spectrometry polluted gas detection unit is connected with the electronic control and data center unit and is used for analyzing and processing the collected signals of the polluted gas, the opaque smoke detection unit is connected with the electronic control and data center unit and is used for detecting the opacity of the tail gas of the motor vehicle, the automatic license plate identification and recording unit is connected with the electronic control and data center unit and is used for identifying and processing the license plate number of the inspected vehicle, the road condition identification unit is connected with the electronic control and data center unit and is used for judging whether the road condition is suitable for the remote sensing detection of the tail gas of the vehicle, the data processing unit is connected with the electronic control and data center unit and is used for processing the data results generated by the detection units, and the remote sensing detection area monitoring unit is connected with the electronic control and data center unit and is used for detecting the remote sensing detection area and the remote sensing area of the vehicle The vehicle driving situation, panorama camera coverage area are the rectangle virtual coil that positive and negative motor way was covered to the dragon door pole under, and first camera and second camera coverage area are the rectangle virtual coil that covers one-way motor way, its characterized in that contains following step:
the method comprises the following steps: a monitoring area is defined by setting a virtual coil of a camera, a vehicle normally runs and touches the edge of the virtual coil monitored by the camera in real time, so that information that the vehicle enters the monitoring area is obtained, and a signal that the vehicle enters the monitoring area is sent to an electronics control unit;
step two: the method comprises the steps that a remote sensing detection area is defined through a virtual coil of a panoramic camera, real-time image acquisition is carried out on the remote sensing detection area, the technology that the virtual coil is cut is adopted to judge the vehicle entering and exiting monitoring or detection area, real-time monitoring is carried out on the remote sensing detection area, and signals of the vehicle entering or exiting are sent to an electronic control unit;
step three: the method comprises the following steps that a first camera and a second camera respectively monitor monitoring areas of a forward lane and a reverse lane in real time, only one vehicle is detected to enter the monitoring areas at the same time, a remote sensing monitoring area monitoring unit sends a detection starting signal to an electronic control unit, and the electronic control unit coordinately controls the detection unit to detect;
step four: the first camera and the second camera simultaneously identify that a plurality of vehicles enter the monitoring area, the system sends a non-detection signal, and the vehicle passing is not detected;
the specific process of only detecting that one vehicle enters the monitoring area at the same moment in the third step is as follows:
1) if the only vehicle passing through the forward lane normally passes through the remote sensing detection area to complete detection, and in the vehicle remote sensing detection process, the monitoring area of the second camera does not detect that other vehicles enter, the system confirms that the only vehicle detection of the forward lane is completed, the detection data is valid, and meanwhile, the next detection processing is carried out;
2) if the only vehicle passing through the forward lane enters the remote sensing detection area, and before the remote sensing detection of the forward vehicle is not finished, the monitoring area of the second camera monitors that the vehicle enters: a, if the panoramic camera does not recognize that a vehicle enters a reverse lane in a remote sensing detection area, the system confirms that the only vehicle passing through the forward lane at this time is effectively detected in a remote sensing manner; b, recognizing that vehicles enter a reverse lane in a remote sensing detection area by the panoramic camera, and confirming that the only vehicle passing the forward lane at this time is invalid in remote sensing detection by the system;
and c, if the vehicles in the forward lane and the vehicles in the reverse lane enter the monitoring areas of the first camera and the second camera at the same time, the bidirectional running vehicles shield the detection light path, the system sends a non-detection signal, and the vehicles passing this time are not detected.
2. The method of claim 1, wherein the steps of: the interval time of the two-way running vehicle entering the remote sensing detection area is not more than 1s, the tail gas of the two vehicles is not completely diffused in the remote sensing detection area, and the remote sensing monitoring system automatically judges the detection data to be invalid.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109211795B (en) * | 2018-10-11 | 2023-09-29 | 北方工业大学 | Vertical multi-lane motor vehicle tail gas remote sensing detection method and system |
| CN109580522A (en) * | 2018-11-20 | 2019-04-05 | 北京计算机技术及应用研究所 | A kind of automobile exhaust pollutant monitoring method merging vehicle electron identifying and video |
| CN111241325B (en) * | 2018-11-28 | 2023-04-28 | 杭州海康威视系统技术有限公司 | Matching method, device and system of vehicle detection data and storage medium |
| CN109859486A (en) * | 2018-12-29 | 2019-06-07 | 海南京溪科技有限公司 | Mobile motor-vehicle tail-gas remote sense monitoring system |
| CN109655407B (en) * | 2018-12-29 | 2021-06-22 | 海南京溪科技有限公司 | Fixed remote sensing automatic monitoring system for tail gas of motor vehicle |
| CN111325944A (en) * | 2020-02-26 | 2020-06-23 | 苏州浩科通电子科技有限公司 | Vehicle parking flameout detection system |
| AT525196B1 (en) * | 2021-06-25 | 2023-06-15 | Avl List Gmbh | Device and method for determining the concentration of a substance in a measuring volume |
| CN114252306B (en) * | 2021-12-24 | 2024-04-26 | 安徽庆宇光电科技有限公司 | Motor vehicle tail gas collecting device for remote sensing detection and detection method thereof |
| CN114324092B (en) * | 2021-12-27 | 2024-04-05 | 安徽庆宇光电科技有限公司 | Online remote sensing monitoring system for light-tight smoke intensity of motor vehicle tail gas |
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