CN215860415U - Vehicle-mounted positioning terminal for monitoring motor vehicle tail gas processing device - Google Patents
Vehicle-mounted positioning terminal for monitoring motor vehicle tail gas processing device Download PDFInfo
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- CN215860415U CN215860415U CN202122334434.3U CN202122334434U CN215860415U CN 215860415 U CN215860415 U CN 215860415U CN 202122334434 U CN202122334434 U CN 202122334434U CN 215860415 U CN215860415 U CN 215860415U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model discloses a vehicle-mounted positioning terminal for monitoring a motor vehicle tail gas processing device, which comprises a positioning module, a wireless communication module and a front-end acquisition and control module, wherein the positioning module is used for monitoring the tail gas processing device; the front-end acquisition and control module acquires nitrogen-oxygen concentration signals, liquid level signals and exhaust temperature signals of urea solution output by a urea pump processing device in the tail gas processing device, and front temperature signals, middle temperature signals, rear temperature signals, front pressure signals, middle pressure signals and rear pressure signals which are respectively detected and output by three temperature sensors and three pressure difference sensors arranged on the particle trapping regenerator, and forms monitoring data by combining geographic coordinates generated by the positioning module, and sends the monitoring data to the remote monitoring platform through the wireless communication module, so that the remote monitoring platform realizes the comprehensive unified supervision of all coming and going motor vehicles in the jurisdiction area and the online real-time monitoring of tail gas emission, and meets the application requirements of the supervision and management of motor vehicle exhaust pollution in the environmental protection field.
Description
Technical Field
The utility model belongs to the technical field of vehicle-mounted terminals, and particularly relates to a vehicle-mounted terminal which is used for collecting detection data of a tail gas treatment device on a motor vehicle and realizing remote data transmission and positioning.
Background
With the improvement of living standard of people, the quantity of private cars is continuously increased, and the exhaust emission pollution of motor vehicles becomes one of the main factors influencing the quality of atmospheric environment. In order to reduce exhaust pollution, installing a particulate trap regenerator DPF and a urea pump treatment device SCR in a motor vehicle is currently the most effective way of purifying exhaust gas. The DPF adopts a physical filtering mode to reduce the particulate matters in the exhaust emission; the urea pump processing device SCR adopts catalytic reduction technology to remove harmful gases in the exhaust emission.
At present, motor vehicle exhaust monitoring systems are arranged beside roads in many areas, and exhaust pollution conditions in the areas are monitored in real time so as to make environmental protection decisions. However, under the drive of some factors, some enterprises often have the phenomenon of artificially destroying the tail gas monitoring system, thereby interfering the normal operation of the monitoring system, causing frequent monitoring data problems, and the occurrence of counterfeiting distortion, thereby greatly reducing the accuracy of the monitoring result.
Meanwhile, the existing tail gas monitoring system has the problems of incomplete data acquisition, low precision, multi-platform monitoring of equipment and the like, so that the resource waste of the equipment is caused, and the function of high-precision acquisition and monitoring of the DPF of the particle capture regenerator and the SCR of the urea pump treatment device cannot be simultaneously completed by single equipment. Therefore, aiming at the application requirements and the actual field requirements of the motor vehicle exhaust pollution supervision and management in the environmental protection field, it is necessary to develop a monitoring terminal which can automatically acquire the detection data of the motor vehicle exhaust gas processing device and realize the remote data transmission and positioning.
Disclosure of Invention
The utility model aims to provide a vehicle-mounted positioning terminal for monitoring a motor vehicle tail gas treatment device, which can realize the omnibearing unified supervision and the online real-time monitoring of tail gas emission of the motor vehicle by positioning the motor vehicle where the vehicle is located, acquiring the detection data of the tail gas treatment device in real time and automatically uploading the data to a unified remote monitoring platform.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a vehicle-mounted positioning terminal for monitoring a motor vehicle tail gas treatment device comprises a particle capture regenerator and a urea pump treatment device, wherein the particle capture regenerator is used for filtering particles in motor vehicle tail gas emissions, and is provided with three temperature sensors and three pressure difference sensors which are respectively used for detecting the temperature and the pressure difference of the motor vehicle tail gas when the motor vehicle tail gas flows through the front section, the middle section and the rear section of the particle capture regenerator so as to output a front temperature signal, a middle temperature signal, a rear temperature signal, a front pressure signal, a middle pressure signal and a rear pressure signal; the urea pump processing device is used for removing harmful gases in the exhaust emission of the motor vehicle, is internally provided with a nitrogen-oxygen sensor, a liquid level sensor and a temperature sensor and is respectively used for detecting and outputting a nitrogen-oxygen concentration signal, a liquid level signal of a urea solution and an exhaust temperature signal; the vehicle-mounted positioning terminal comprises a positioning module, a wireless communication module and a front-end acquisition and control module; the positioning module is used for detecting the geographic position of the motor vehicle and generating geographic coordinates; the wireless communication module is used for communicating with the remote monitoring platform; the front end acquisition and control module receives the geographical coordinates, acquires the front temperature signal, the middle temperature signal, the rear temperature signal, the front pressure signal, the middle pressure signal, the rear pressure signal, the nitrogen-oxygen concentration signal, the liquid level signal and the temperature signal output by the urea pump processing device, forms monitoring data, and sends the monitoring data to the remote monitoring platform through the wireless communication module.
In some embodiments of the present application, the three temperature sensors are respectively disposed at a middle position of a front section, a middle position of a middle section, and a middle position of a rear section of the particle capture regenerator, so as to improve accuracy of detection of a front-section air temperature, a middle-section air temperature, and a rear-section air temperature of the particle capture regenerator. Whether the particle trapping regenerator is abnormal or not can be judged by utilizing the collected three-section air temperature signals, the abnormal particle trapping regenerator is timely treated, and the problem that the tail gas of the motor vehicle is discharged to the atmosphere without being fully subjected to particle filtration and causes serious pollution to the atmosphere is avoided.
In some embodiments of the present application, the three differential pressure sensors are a front section differential pressure sensor, a middle section differential pressure sensor, and a rear section differential pressure sensor, respectively; the front-section differential pressure sensor receives inlet gas and outlet gas of the front section of the particle capture regenerator, detects the differential pressure of the inlet gas and the outlet gas of the front section, and forms the front pressure signal; the middle section differential pressure sensor receives inlet gas and outlet gas of the middle section of the particle trapping regenerator, and detects the differential pressure of the inlet gas and the outlet gas of the middle section to form a medium pressure signal; the rear section differential pressure sensor receives inlet gas and outlet gas of the rear section of the particle trapping regenerator, detects differential pressure of the inlet gas and the outlet gas of the rear section, and forms the rear pressure signal. According to the collected three-section pressure difference signals, whether the particle trapping regenerator is abnormal or not can be judged. The abnormal particle trapping regenerator is required to be timely alarmed and processed, so that the phenomenon that the particles in the tail gas of the motor vehicle are discharged to the atmosphere under the condition of not being fully filtered and serious pollution to the atmosphere is caused is avoided.
In some embodiments of the present application, in order to realize multi-channel high-precision acquisition of each detection signal, it is preferable to configure the front-end acquisition and control module to acquire each temperature signal and each pressure difference signal through an AD interface, and generate temperature data and pressure difference data after performing analog-to-digital conversion; and the urea pump processing device is configured to output digital nitrogen oxygen concentration signals and liquid level signals, and the digital nitrogen oxygen concentration signals and the liquid level signals are transmitted to the front-end acquisition and control module through a CAN bus.
In some embodiments of the application, in order to avoid the problem of data loss when the monitoring data is interrupted by a network, it is preferable that the vehicle-mounted positioning terminal is provided with an SD card storage module, connected with the front-end acquisition and control module, so as to reserve and store the monitoring data, and automatically upload the monitoring data to the remote monitoring platform after the network is connected, thereby ensuring the continuity of monitoring the motor vehicle exhaust emission condition in the jurisdiction by the remote monitoring platform.
In some embodiments of the application, preferably configure the display module on the on-vehicle location terminal, connect front end collection and control module, show monitoring data to make motor vehicle driver can master the emission condition of this car tail gas in real time, and can receive the warning when tail gas processing apparatus breaks down and remind, in time make the response of answering, reduce the pollution that motor vehicle tail gas caused the environment.
Compared with the prior art, the utility model has the advantages and positive effects that: the vehicle-mounted positioning terminal is arranged on each motor vehicle, the detection signals of the particle capture regenerator and the urea pump processing device are acquired in real time by the vehicle-mounted positioning terminal, and the monitoring data are generated by combining the positioning coordinates and uploaded to the unified remote monitoring platform, so that the comprehensive unified supervision of the motor vehicles and the online real-time positioning and monitoring of tail gas emission by environmental protection departments can be met, the social cost is saved, and the resource waste is avoided.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic block circuit diagram of an embodiment of an electrical control portion of an onboard locating terminal for monitoring a motor vehicle exhaust treatment device in accordance with the present invention;
FIG. 2 is a schematic diagram of an embodiment of the location of the temperature sensor and differential pressure sensor on the particulate trap regenerator.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In the embodiment, on the aspect of solving the problem of exhaust emission pollution of the motor vehicle, the exhaust treatment device configured on the motor vehicle is monitored in real time, and whether the particulate capture regenerator DPF and the urea pump treatment device SCR are abnormal or not can be automatically judged by collecting certain parameters of the particulate capture regenerator DPF and the urea pump treatment device SCR in the exhaust treatment device in the operation process. For abnormal particulate trapping regenerator DPF and urea pump processing device SCR, an alarm reminding mode can be adopted to inform a motor vehicle driver to respond in time and process, so that pollution to the environment caused by the fact that unpurified tail gas is discharged to the atmosphere in a large amount can be avoided. Meanwhile, the content of pollutants in tail gas exhausted by a motor vehicle can be indirectly judged by acquiring a nitrogen-oxygen concentration signal detected and output by a nitrogen-oxygen sensor in the SCR of the urea pump processing device, and the requirements of an environmental protection department on online real-time positioning and monitoring of tail gas emission of the motor vehicle are met.
In order to achieve the above object, in the present embodiment, first, a temperature sensor and a differential pressure sensor are disposed on the DPF, as shown in fig. 2, to detect the temperature and the differential pressure of the vehicle exhaust gas flowing through the front section, the middle section, and the rear section of the DPF in real time.
As a preferred embodiment, three temperature sensors PT1, PT2, PT3 and three differential pressure sensors SDP1, SDP2, SDP3 may be arranged on the particulate trap regenerator DPF. The temperature sensor PT1 is disposed in the front section of the particulate trap regenerator DPF, preferably in the middle of the front section of the particulate trap regenerator DPF, and detects the temperature of the vehicle exhaust gas flowing through the front section of the particulate trap regenerator DPF, and generates and outputs a front temperature signal T1. The temperature sensor PT2 is disposed at a middle section of the particulate trap regenerator DPF, preferably at an intermediate position of the middle section of the particulate trap regenerator DPF, for detecting a temperature of the vehicle exhaust gas flowing through the middle section of the particulate trap regenerator DPF and generating and outputting a middle temperature signal T2. The temperature sensor PT3 is disposed at a rear stage of the particulate trap regenerator DPF, preferably at an intermediate position of the rear stage of the particulate trap regenerator DPF, for detecting a temperature of the exhaust gas of the vehicle when passing through the rear stage of the particulate trap regenerator DPF, and generating and outputting a rear temperature signal T3.
The three differential pressure sensors may be defined as a front stage differential pressure sensor SDP1, a middle stage differential pressure sensor SDP2, and a rear stage differential pressure sensor SDP3, respectively. The front stage differential pressure sensor SDP1 receives the inlet gas and the outlet gas of the front stage of the particulate trap regenerator DPF, detects the differential pressure between the inlet gas and the outlet gas of the front stage, and generates and outputs a front pressure signal P1. The middle section differential pressure sensor SDP2 receives inlet gas and outlet gas of the middle section of the particulate trap regenerator DPF, detects a differential pressure of the inlet gas and the outlet gas of the middle section, and generates and outputs a medium pressure signal P2. The rear stage differential pressure sensor SDP3 receives the inlet gas and the outlet gas of the rear stage of the particulate trap regenerator DPF, detects the differential pressure between the inlet gas and the outlet gas of the rear stage, and generates and outputs a rear pressure signal P3.
The urea pump processing device SCR incorporates a nitrogen oxide sensor, a liquid level sensor, and a temperature sensor. The nitrogen-oxygen sensor is used for detecting the nitrogen-oxygen concentration in the tail gas and generating a nitrogen-oxygen concentration signal for output. The liquid level sensor is used for detecting the liquid level height of the urea solution in the SCR of the urea pump processing device and generating a liquid level signal for outputting. The temperature sensor is used for detecting the exhaust temperature and generating and outputting an exhaust temperature signal T4.
In order to perform multi-channel high-precision acquisition on each path of sampling parameters, in this embodiment, a front-end acquisition and control module is arranged in the vehicle-mounted positioning terminal, and is used for acquiring sampling signals output by each path of sensor and performing data processing. In some embodiments, the front-end collection and control module may be formed by connecting an independent front-end collection module and an independent control module, as shown in fig. 1. The front-end acquisition module is connected with each sensor and used for acquiring sampling signals output by each sensor, converting the sampling signals into digital signals and transmitting the digital signals to the control module. And the control module is used for processing the received digital signals and is responsible for carrying out coordination control on the operation of other functional modules in the vehicle-mounted positioning terminal. In other embodiments, the front-end acquisition and control module may be integrated on a single integrated chip to perform signal acquisition and processing tasks.
In this embodiment, the front end collecting and controlling module is preferably configured to connect each of the temperature sensors and the differential pressure sensor through an AD interface, and collect each of the temperature signals and the differential pressure signals in an AD sampling manner, for example, a front temperature signal T1, a middle temperature signal T2, a rear temperature signal T3, an exhaust temperature signal T4, a front pressure signal P1, a middle pressure signal P2, a rear pressure signal P3, and the like. The front-end acquisition and control module is configured to be connected with the urea pump processing device SCR through a CAN bus to receive nitrogen and oxygen concentration signals and liquid level signals. In this embodiment, the urea pump processing device SCR is configured to output a digital nitrogen-oxygen concentration signal and a liquid level signal, and output an analog exhaust temperature signal T4.
The front-end acquisition and control module carries out analog quantity to digital quantity conversion processing on the analog quantity temperature signal and the differential pressure signal acquired through the AD interface of the front-end acquisition and control module to generate temperature data and differential pressure data. A positioning module and a positioning antenna, and a wireless communication module and a communication antenna may be further disposed on the vehicle-mounted positioning terminal, as shown in fig. 1. And the positioning module is communicated with the navigation satellite to detect the current geographic position of the motor vehicle in real time, generate geographic coordinates and transmit the geographic coordinates to the front-end acquisition and control module. The front-end acquisition and control module combines geographical coordinates, temperature data, pressure difference data, nitrogen oxygen concentration signals and liquid level signals received through a CAN bus thereof, comprehensively generates monitoring data, and sends the monitoring data to a unified remote monitoring platform through a wireless communication module via a communication antenna. Personnel of the environmental protection department can carry out all-around unified supervision and real-time online positioning and monitoring of tail gas emission on the remote monitoring platform on all motor vehicles passing through the jurisdiction, so that social cost can be saved, and resource waste can be avoided.
In order to avoid the problem of loss of the monitoring data in the process of remote transmission due to wireless network abnormality, in this embodiment, an SD card storage module is preferably arranged in the vehicle-mounted positioning terminal, and is connected to the front-end acquisition and control module, as shown in fig. 1. The front-end acquisition and control module can send the monitoring data to the SD card storage module for backup storage while transmitting the monitoring data to the remote monitoring platform through the wireless communication module, and automatically uploads the backup monitoring data in the SD card storage module to the remote monitoring platform through the wireless communication module after the wireless network is recovered to normal, so that environmental protection personnel can continuously monitor the exhaust emission condition in the jurisdiction through the remote monitoring platform.
As a preferred embodiment, in this embodiment, a display module may be further installed on the vehicle-mounted positioning terminal, and connected to the front-end acquisition and control module, as shown in fig. 1. The front-end acquisition and control module can display the monitoring data to a motor vehicle driver in real time through the display module so that the driver can conveniently master the actual working condition of the vehicle tail gas treatment device.
In order to achieve the warning purpose, the embodiment can also determine a proper high-temperature threshold and a proper high-pressure threshold in advance according to the parameters of the motor vehicle engine, and write the high-temperature threshold and the high-pressure threshold into the SD card storage module or the front-end acquisition and control module. When the temperature value detected by any one of the temperature sensors PT1, PT2 and PT3 arranged on the DPF of the particulate trapping regenerator exceeds a high-temperature threshold value or the pressure difference value detected by any one of the pressure difference sensors SDP1, SDP2 and SDP3 exceeds a high-pressure threshold value, the front-end acquisition and control module outputs alarm information through the display module so as to remind a driver that the DPF of the particulate trapping regenerator breaks down and needs to be processed in time, and the problem that particulate matters in tail gas are discharged to the atmosphere under the condition that the particulate matters are not fully filtered and cause serious pollution to the atmosphere is avoided.
In this embodiment, the front end is gathered and control module also can be with alarm information wireless transmission to remote monitoring platform to the realization is to the locking of problem vehicle.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. An on-board location terminal for monitoring an automotive exhaust treatment device, the exhaust treatment device comprising:
a particulate trap regenerator for filtering particulate matter in an exhaust emission of a motor vehicle;
the urea pump processing device is used for removing harmful gases in the exhaust emission of the motor vehicle, is internally provided with a nitrogen-oxygen sensor, a liquid level sensor and a temperature sensor and is respectively used for detecting and outputting a nitrogen-oxygen concentration signal, a liquid level signal of a urea solution and an exhaust temperature signal;
the particle trapping regenerator is characterized in that three temperature sensors and three differential pressure sensors are arranged on the particle trapping regenerator and are respectively used for detecting the temperature and the differential pressure of the tail gas of the motor vehicle when the tail gas flows through the front section, the middle section and the rear section of the particle trapping regenerator so as to output a front temperature signal, a middle temperature signal, a rear temperature signal, a front pressure signal, a middle pressure signal and a rear pressure signal;
the vehicle-mounted positioning terminal comprises:
the positioning module is used for detecting the geographic position of the motor vehicle and generating geographic coordinates;
the wireless communication module is used for communicating with the remote monitoring platform;
and the front end acquisition and control module is used for receiving the geographic coordinates, acquiring the front temperature signal, the middle temperature signal, the rear temperature signal, the front pressure signal, the middle pressure signal, the rear pressure signal and the nitrogen-oxygen concentration signal, the liquid level signal and the temperature signal output by the urea pump processing device to form monitoring data, and transmitting the monitoring data to a remote monitoring platform through the wireless communication module.
2. The on-board vehicle positioning terminal for monitoring a motor vehicle exhaust gas treatment device according to claim 1, wherein the three temperature sensors are disposed at a middle position of a front section, a middle position of a middle section, and a middle position of a rear section of the particulate trap regenerator, respectively.
3. The vehicle-mounted positioning terminal for monitoring a motor vehicle exhaust gas treatment device according to claim 1, wherein the three differential pressure sensors comprise:
a front-stage differential pressure sensor which receives the inlet gas and the outlet gas of the front stage of the particle capture regenerator, detects the differential pressure of the inlet gas and the outlet gas of the front stage, and forms the front pressure signal;
a middle section differential pressure sensor which receives inlet gas and outlet gas of a middle section of the particle trapping regenerator, detects a differential pressure of the inlet gas and the outlet gas of the middle section, and forms the medium pressure signal;
and the rear-section differential pressure sensor receives the inlet gas and the outlet gas of the rear section of the particle capture regenerator, detects the differential pressure of the inlet gas and the outlet gas of the rear section and forms the rear pressure signal.
4. The vehicle-mounted positioning terminal for monitoring a motor vehicle exhaust gas treatment device according to claim 1,
the front-end acquisition and control module acquires temperature signals and pressure difference signals of each path through an AD interface, and generates temperature data and pressure difference data after performing analog-to-digital conversion;
the urea pump processing device outputs digital nitrogen oxygen concentration signals and liquid level signals, and the digital nitrogen oxygen concentration signals and the liquid level signals are transmitted to the front end acquisition and control module through a CAN bus.
5. The on-board positioning terminal for monitoring a motor vehicle exhaust gas treatment device according to any one of claims 1 to 4, further comprising:
and the SD card storage module is connected with the front-end acquisition and control module and stores the monitoring data.
6. The vehicle-mounted positioning terminal for monitoring the motor vehicle exhaust gas treatment device according to claim 5, further comprising:
and the display module is connected with the front-end acquisition and control module and displays the monitoring data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122334434.3U CN215860415U (en) | 2021-09-26 | 2021-09-26 | Vehicle-mounted positioning terminal for monitoring motor vehicle tail gas processing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122334434.3U CN215860415U (en) | 2021-09-26 | 2021-09-26 | Vehicle-mounted positioning terminal for monitoring motor vehicle tail gas processing device |
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| CN215860415U true CN215860415U (en) | 2022-02-18 |
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| CN202122334434.3U Active CN215860415U (en) | 2021-09-26 | 2021-09-26 | Vehicle-mounted positioning terminal for monitoring motor vehicle tail gas processing device |
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