CN211975124U - Vehicle exhaust emission monitoring device and vehicle based on OBD - Google Patents
Vehicle exhaust emission monitoring device and vehicle based on OBD Download PDFInfo
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- CN211975124U CN211975124U CN202020431119.5U CN202020431119U CN211975124U CN 211975124 U CN211975124 U CN 211975124U CN 202020431119 U CN202020431119 U CN 202020431119U CN 211975124 U CN211975124 U CN 211975124U
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Abstract
The utility model discloses a vehicle exhaust emission monitoring device and vehicle based on OBD, including data processing unit, OBD data acquisition unit and wireless communication unit; the OBD data acquisition unit is connected with a vehicle OBD interface; the data processing unit is connected with the OBD data acquisition module; the data processing unit is connected with the wireless communication unit and is connected with the monitoring center through the wireless communication unit. The utility model discloses the device can carry out real-time and accurate reading to vehicle exhaust emission data to the real-time vehicle exhaust monitoring center that uploads of exhaust emission data that will read has greatly reduced automobile exhaust emission and has detected the cost, and shortens detection cycle.
Description
Technical Field
The utility model relates to a motor vehicle exhaust emission control technical field, in particular to vehicle exhaust emission monitoring device and vehicle based On OBD (On Board Diagnostics).
Background
At present, the problem of exhaust emission of heavy diesel vehicles in China is severe, the heavy diesel vehicles become one of main atmospheric environmental pollution sources in China, and the heavy diesel vehicles also become an important factor harming human health while bringing huge burden to environmental protection and atmospheric treatment.
In order to solve the above problems, the exhaust emission of heavy diesel vehicles needs to be monitored, and the currently common solution is as follows: 1. in the annual inspection of a motor vehicle detection station, an instrument is used for intensively detecting components in exhaust emission of the heavy diesel vehicle; 2. the method comprises the following steps of (1) carrying out stuck point detection on a passing heavy diesel vehicle at a main entrance and exit of an urban road; 3. and (4) building a vehicle black smoke snapshot system for photographing and monitoring on the traffic trunk.
According to the first method, the exhaust emission of the heavy diesel vehicle is detected at the motor vehicle detection station, although the exhaust emission of the heavy diesel vehicle can be effectively detected, the number of the heavy diesel vehicles detected at the same time is limited, and in addition, the detection process is complex, so that the problems of low efficiency and low detection speed exist. Meanwhile, the heavy-duty diesel vehicle basically detects an empty vehicle at a detection station and cannot truly reflect real-time exhaust emission data during cargo transportation. The second method is characterized in that the main entrance and the main exit are provided with the stuck points to carry out stuck point detection on the heavy diesel vehicle, so that the tail gas emission data of the vehicle during goods transportation can be detected in real time. However, in a traffic hub of a large city, the number of main entrances and exits is large, and more manpower and material resources are needed to be added when the main entrances and exits are provided with the blocking points, so that huge cost is brought to detection work, and traffic jam is easily caused. In the third method, the tail gas emission of the heavy diesel vehicle is detected by using the vehicle black smoke snapshot system, and although the opacity of the tail gas of the vehicle can be visually monitored, the tail gas components and quantitative data cannot be accurately monitored, so that the detection method obviously has defects.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first aim at overcomes prior art's shortcoming and not enough, provides a vehicle exhaust emission monitoring device based on OBD, and the device can carry out real-time and accurate reading to vehicle exhaust emission data to the real-time vehicle exhaust gas surveillance center that uploads of exhaust emission data that will read, greatly reduced automobile exhaust emission detection cost, and shorten detection cycle.
A second object of the present invention is to provide a vehicle.
The first purpose of the utility model is realized through the following technical scheme: an OBD-based vehicle exhaust emission monitoring device comprises a data processing unit, an OBD data acquisition unit and a wireless communication unit;
the OBD data acquisition unit is connected with a vehicle OBD interface; the data processing unit is connected with the OBD data acquisition module;
the data processing unit is connected with the wireless communication unit and is connected with the monitoring center through the wireless communication unit.
Preferably, the driving behavior analysis unit is connected with the data processing unit.
Further, the driving behavior analysis unit is a six-axis gyro sensor or a nine-axis gyro sensor.
Preferably, the track recording device further comprises a track recording unit connected with the data processing unit.
Preferably, the device further comprises a device wake-up unit connected with the data processing unit, wherein the device wake-up unit is connected to a power pin in the vehicle OBD interface, and the power pin is a pin in the vehicle OBD interface connected with a vehicle-side power supply.
Furthermore, the device awakening unit comprises a voltage regulator tube and a switch tube;
the cathode of the voltage stabilizing tube is used as a voltage detection end of the device awakening unit and is connected to a power pin in an OBD interface of the vehicle; the anode of the voltage regulator tube is connected to the first pole of the switch tube through a first resistor, the second pole of the switch tube is grounded, the third pole of the switch tube is connected to the direct current power supply through a second resistor, and the third pole of the switch tube is connected to the IO port of the data processing unit;
the switch tube is a triode or a field effect tube; when the switch tube is a triode, the first pole of the switch tube is a base electrode, the second pole is an emitting electrode, and the third pole is a collector electrode; when the switch tube is a field effect tube, the first pole of the switch tube is a grid electrode, the second pole is a source electrode, and the third pole is a drain electrode.
Preferably, the vehicle-mounted terminal further comprises a device removal warning unit connected with the data processing unit, wherein the device removal warning unit is connected to a power pin in the vehicle OBD interface, and the power pin is a pin in the vehicle OBD interface and connected with a vehicle-side power supply;
the device removal warning unit comprises an ADC (analog to digital converter) acquisition module, the ADC acquisition module is connected with the data processing unit, and the device removal warning unit is connected to a power pin in an OBD (on-board diagnostics) interface of the vehicle through the ADC acquisition module.
Preferably, the system further comprises a data memory connected with the data processing unit.
Preferably, the vehicle OBD data acquisition unit further comprises a connecting port, and the OBD data acquisition unit is connected to the vehicle OBD interface through the connecting port; the device awakening unit and the equipment removal warning unit connected with the data processing unit are connected to a power supply pin in the vehicle OBD interface through the connecting port, and the power supply pin is connected with a vehicle-side power supply in the vehicle OBD interface.
The second purpose of the utility model is realized by the following technical scheme: a vehicle, including the right the utility model discloses a first purpose vehicle exhaust emission monitoring device based on OBD.
The utility model discloses for prior art have following advantage and effect:
(1) the utility model discloses vehicle exhaust emission monitoring device based on OBD, including data processing unit, OBD data acquisition unit and wireless communication unit; the OBD data acquisition unit is connected with a vehicle OBD interface and used for acquiring vehicle exhaust emission data; the data processing unit is connected with the OBD data acquisition module and acquires data acquired by the OBD data acquisition module. The data processing unit is connected with the wireless communication unit, corresponding data are transmitted to the monitoring center through the wireless communication unit, and the monitoring center comprehensively analyzes the vehicle exhaust emission condition according to the received data. The utility model discloses the device can carry out real-time and accurate reading to vehicle exhaust emission data to the real-time vehicle exhaust surveillance center that reaches of exhaust emission data that will read has greatly reduced automobile exhaust emission and has detected the cost, and shortens detection cycle. The defect that a tail gas black smoke snapshot system in the prior art can only detect the opacity, cannot analyze the comprehensive components of the tail gas and the real-time vehicle condition is overcome, and the problems that a heavy diesel vehicle needs to be driven to a vehicle detection station to detect by using a special instrument and traffic jam possibly caused by the fact that a stuck point is arranged are solved. Additionally, the utility model discloses the device makes the vehicle can realize the control of exhaust emission data in the driving process that carries cargo, compares in the short-term detection of detection station empty wagon, the utility model discloses the device can be more close true operating mode and can the analysis through big data for a long time move and the exhaust emission situation of different road conditions, mileage.
(2) The utility model discloses vehicle exhaust emission monitoring device based on OBD still includes the driving action analysis unit who is connected with the data processing unit, can detect the driving action information of vehicle at the process of traveling through driving action analysis unit, including whether there is driving actions such as sharp turn, sharp acceleration, hypervelocity, idle speed. Additionally, the utility model discloses the device still includes the orbit record unit of being connected with the data processing unit, through orbit record unit record vehicle orbit information, the data processing unit is according to driving action information and vehicle orbit information, can acquire vehicle mileage, vehicle oil consumption and vehicle whether according to the scheduled route go, whether the vehicle has the violating driving action such as hypervelocity, idle speed, and can pass through wireless communication unit with these information and upload to the surveillance center, thereby realize the control to vehicle driving action, provide support for vehicle traffic supervision.
(3) The utility model discloses vehicle exhaust emission monitoring device based on OBD still includes the device awakening unit who is connected with the data processing unit, and the device awakening unit is connected to the power pin of vehicle OBD interface, because this power pin voltage is connected to the car end power, so the output voltage of car end power can be detected to the above-mentioned connection relation of device awakening unit to whether there is the ignition in the vehicle according to the output voltage detection of car end power; when the vehicle was igniteed and is taken place, the device awakens up the unit and can send the signal for data processing unit, thereby the drive the utility model discloses data processing unit etc. get into mode in the device. In addition, the driving behavior analysis unit in the embodiment can also have the function of waking up simultaneously, and when the driving behavior analysis unit detects that the vehicle starts to produce certain dynamic range, the corresponding signal can be sent to wake up the unit for the device, so that the device wakes up the unit drive the utility model discloses the device gets into operating mode. By the foregoing, the utility model discloses can make the device just carry out work after the vehicle starts, effectively reduce the utility model discloses the consumption of device has energy-concerving and environment-protective advantage.
(4) The utility model discloses vehicle exhaust emission monitoring device based on OBD still includes the equipment removal warning unit who is connected with data processing unit, and the equipment removal warning unit is connected to the power pin in the vehicle OBD interface, and this power pin is the pin that is connected with the car end power in the vehicle OBD interface; therefore the utility model discloses when OBD interface was connected to the device, the voltage that warning unit can sample car end power was removed to equipment. And work as the utility model discloses when device and OBD interface disconnection, when extracting promptly, equipment is removed and is warned the unit and will not sample car end power, corresponds the sampling value and will be zero or a reference low value. Therefore, the utility model discloses in, equipment is removed and is warned the unit and can be confirmed according to the ADC sampling value the utility model discloses whether device and vehicle OBD interface disconnection, whether extract promptly, when detecting and being extracted, equipment is removed and is warned the unit and send alarm information to data processing unit, passes through wireless communication unit by data processing unit and conveys alarm information to the surveillance center to inform vehicle car owner or relevant personnel through SMS or other modes by the surveillance center.
(5) The utility model discloses vehicle exhaust emission monitoring device based on OBD still includes the data storage unit who is connected with the data processing unit; when the wireless communication unit detects that the signal is weak, the signal is fed back to the data processing unit in real time, the data processing unit backups the offline data to the data storage unit, a timestamp is added to each piece of data, and when the signal is good, the wireless transmission module reads and uploads the data from the data processing unit. Therefore, the utility model discloses a device can keep in data through data memory cell, can avoid in the place that the signal is not good, for example the highway sections of traveling such as tunnel, mountain area, can not give the surveillance center with data feedback, and arouse the problem that the monitoring data is lost.
Drawings
Fig. 1 is a block diagram of the device of the present invention.
Fig. 2 is a schematic diagram of a circuit of a data processing unit in the device of the present invention.
Fig. 3a and 3b are schematic circuit diagrams of the OBD data acquisition unit in the device of the present invention.
Fig. 4 is a schematic diagram of a wake-up unit circuit in the device of the present invention.
Fig. 5 is a schematic circuit diagram of the device removal alarm unit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Example 1
The embodiment discloses a vehicle exhaust emission monitoring device based on OBD, which comprises a data processing unit, an OBD data acquisition unit, a wireless communication unit, a driving behavior analysis unit, a track recording unit, a device awakening unit, an equipment removal warning unit and a data storage unit.
The OBD data acquisition unit is connected with the OBD interface of the vehicle through the connector and reads real-time data of sensors such as an engine, nitrogen oxides and the like related to exhaust emission. In this embodiment, the OBD data acquisition unit adopts a new national standard environmental OBD protocol analysis algorithm, supports protocols such as ISO 15765, ISO 9141-2, ISO 14230, SAE J1939 and ISO 27145, and supports acquisition of engine data and post-processing device data, including data such as NOx concentration, post-processing system intake/exhaust temperature, DPF differential pressure, exhaust temperature, vehicle speed/rotation speed, urea injection amount, SCR catalyst tank liquid level, and SCR catalyst tank temperature.
In this embodiment, the OBD data acquisition unit may employ a K-wire protocol double differential comparator as shown in fig. 3a, for example, series chips such as LM193, LM293, LM393, LM2903, and the like. Alternatively, the OBD data acquisition unit may also employ a CAN protocol transceiver as shown in fig. 3b, such as a TJA1040 chip.
The data processing unit is connected with the OBD data acquisition module and acquires data acquired by the OBD data acquisition module. In this embodiment, as shown in fig. 2, the data processing unit may be an ARM, such as an STM32F107, and in this embodiment, the data processing unit communicates with the OBD data acquisition module through a CAN line or a K line and a serial port.
The data processing unit is connected with the wireless communication unit and is connected with the monitoring center through the wireless communication unit so as to transmit corresponding data to the monitoring center through the wireless communication unit. The corresponding data comprise exhaust emission data collected by the OBD data collection module.
In this embodiment, the wireless communication unit may be a mobile communication model such as a GSM communication module, a 3G/4G/5G communication module, and based on the wireless communication unit, the data processing unit may upload data to the monitoring center through a mobile network. In this embodiment, the monitoring center may be a database platform disposed in a vehicle protection management organization such as an environmental protection monitoring center and a vehicle administration post, and the database platform is composed of a server and other devices.
In this embodiment, the driving behavior analysis unit is connected to the data processing unit, and the driving behavior analysis unit in this embodiment includes a six-axis gyroscope or a nine-axis gyroscope connected to the data processing unit, and can detect driving behaviors of the vehicle such as sharp turning, sharp acceleration, overspeed, and idling. In this embodiment, the driving behavior analysis unit may be a six-axis gyro sensor or a nine-axis gyro sensor.
In this embodiment, the track recording unit is connected to the data processing unit and is configured to record track information of the vehicle, and the data processing unit may acquire, according to the driving behavior information and the vehicle track information, a driving distance of the vehicle, a vehicle oil consumption, whether the vehicle is driven according to a predetermined route, whether the vehicle has an illegal driving behavior such as overspeed and idling, and may upload the information to the monitoring center through the wireless communication unit, thereby implementing monitoring of the driving behavior of the vehicle and providing support for vehicle traffic supervision. In this embodiment, the track recording unit can be big dipper or GPS receiving module etc.
In this embodiment, the device wake-up unit is connected to the data processing unit, and meanwhile, the device wake-up unit is connected to a power pin in the vehicle OBD interface, where the power pin is a pin connected to a vehicle-side power supply in the vehicle OBD interface.
When the device awakening unit is connected to the power pin of the vehicle OBD interface, the device awakening unit is also connected to the vehicle-side power supply, so that the device awakening unit can detect the output voltage of the vehicle-side power supply. Before or after the automobile is ignited, the output voltage of the vehicle-end power supply is stable voltage, such as 12V (small vehicle-end power supply) or 24V (large vehicle-end power supply), and when the automobile is ignited, the output voltage of the vehicle-end power supply is instantly reduced to about 7V (small vehicle) or 19V (large vehicle). In the embodiment, the device awakening unit detects whether the automobile is ignited by detecting whether the voltage of the power supply at the automobile end is reduced, and outputs a corresponding level signal to the data processing unit to drive the data processing unit and the like in the device of the embodiment to enter a working mode under the condition that the automobile is ignited; otherwise, the data processing unit and the like in the device of the embodiment enter the sleep mode.
In this embodiment, as shown in fig. 4, the device wake-up unit includes a voltage regulator D1 and a switch Q4; wherein: the cathode of the voltage stabilizing tube is used as a voltage detection end of the device awakening unit and is connected to a power pin in an OBD interface of the vehicle; the anode of the voltage regulator tube is connected to the first pole of the switch tube through a first resistor R36, the second pole of the switch tube is grounded, the third pole of the switch tube is connected to the direct current power supply through a second resistor R33, and the third pole of the switch tube is connected to the IO port of the data processing unit; the switch tube is a triode or a field effect tube; when the switch tube is a triode, the first pole of the switch tube is a base electrode, the second pole is an emitting electrode, and the third pole is a collector electrode; when the switch tube is a field effect tube, the first pole of the switch tube is a grid electrode, the second pole is a source electrode, and the third pole is a drain electrode.
In this embodiment, the above-mentioned device awakening unit theory of operation is as follows, for example for 24V car end power, when the utility model discloses the device is connected and is connected the OBD interface connection, and the stabilivolt negative pole will have a 24V voltage to make the stabilivolt puncture this moment to make switch tube Q4 switch on, the third pole of switch tube Q4 will output a low level signal to data processing unit's IO port this moment. When the voltage of the vehicle-end power supply is instantaneously pulled down due to ignition, the voltage pulled down at this time can prevent the voltage regulator tube from being broken down, so that the switch tube Q4 becomes a cut-off state, the third pole of the switch tube Q4 outputs a high-level signal to the IO port of the data processing unit, and the data processing unit wakes up when the IO port receives the high-level signal.
In this embodiment, the driving behavior analyzing unit may also have the function of the device waking unit, wherein when the driving behavior analyzing unit detects that the vehicle starts to generate a certain dynamic range, that is, when the vibration of the vehicle reaches a certain stage, the driving behavior analyzing unit may send a corresponding signal, such as a high level or low level signal, to the data processing unit, and drive the data processing unit to enter a working mode, or enter a sleep mode.
In this embodiment, the device removal warning unit is connected to the data processing unit, and the device removal warning unit is connected to a power pin in the vehicle OBD interface, where the power pin is a pin in the vehicle OBD interface and connected to a vehicle-side power supply.
In this embodiment, the device removes the above-mentioned connection relationship of the warning unit, so that when the apparatus of this embodiment is connected to the OBD interface, the device removes the warning unit and can sample the voltage of the vehicle-side power supply, for example, 12V or 24V. When the present embodiment is disconnected from the OBD interface, i.e. pulled out, the device removal warning unit will not sample the voltage of the vehicle-side power supply, and the corresponding sampling value will be zero or a reference low value. In this embodiment, when the device removal warning unit detects that the sampled voltage is zero or a reference low value, it indicates that the apparatus of this embodiment is pulled out, that is, connected to the OBD interface port, the device removal warning unit sends the alarm information to the data processing unit, and the data processing unit transmits the alarm information to the monitoring center through the wireless communication unit, so that the monitoring center notifies a vehicle owner or related personnel through a short message or other methods.
In this embodiment, the device removal warning unit includes backup battery and ADC collection module, and data processing unit is connected to ADC collection module, and the device removal warning unit is connected to the power pin in the vehicle OBD interface through ADC collection module. The backup battery is used for supplying power to each unit in the device of the embodiment.
As shown in fig. 5, the ADC acquisition module in this embodiment may have the following structure: the vehicle OBD warning device comprises a microcontroller, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected to a power supply pin in a vehicle OBD interface as a voltage sampling end of the device removal warning unit, the other end of the resistor R1 is connected with the resistor R2 and then grounded, and a port connected with the resistors R1 and R2 is connected to an IO port of the microcontroller. The voltage value sampled by the voltage sampling end can be acquired by the microcontroller through the voltage drop on the resistor R2.
In this embodiment, the data storage is connected to the data processing unit and is configured to store data received by the data processing unit. When the wireless communication unit detects that the signal is weak, the signal is fed back to the data processing unit in real time, the data processing unit backups the offline data to the data storage unit, a timestamp is added to each piece of data, and when the signal is good, the wireless transmission module reads and uploads the data from the data processing unit.
The device of the embodiment is also provided with a connecting port, and the connecting port can be inserted into the OBD interface to realize the connection with the OBD interface. Each pin which needs to be connected with the OBD interface in the OBD data acquisition unit is connected to the connection port and is connected to the vehicle OBD interface through the connection port; the voltage detection end of the device awakening unit and the voltage sampling end of the equipment removal warning unit are connected to the connection port and are connected to the OBD power pin through the connection port.
Example 2
The embodiment discloses a vehicle, which comprises the OBD-based vehicle exhaust emission monitoring device in the embodiment 1. Wherein, vehicle exhaust emission monitoring device sets up on the vehicle, and the OBD data acquisition unit passes through the vehicle OBD interface that the connector connects the vehicle of place.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. The vehicle exhaust emission monitoring device based on the OBD is characterized by comprising a data processing unit, an OBD data acquisition unit and a wireless communication unit;
the OBD data acquisition unit is connected with a vehicle OBD interface; the data processing unit is connected with the OBD data acquisition module;
the data processing unit is connected with the wireless communication unit and is connected with the monitoring center through the wireless communication unit.
2. The OBD-based vehicle exhaust emission monitoring device according to claim 1, further comprising a driving behavior analysis unit connected to the data processing unit.
3. The OBD-based vehicle exhaust emission monitoring device according to claim 2, wherein the driving behavior analysis unit is a six-axis gyro sensor or a nine-axis gyro sensor.
4. The OBD-based vehicle exhaust emission monitoring device according to claim 1, further comprising a trajectory recording unit connected to the data processing unit.
5. The OBD-based vehicle exhaust emission monitoring device according to claim 1, further comprising a wake-up device connected to the data processing unit, the wake-up device being connected to a power pin in the vehicle OBD interface, the power pin being a pin in the vehicle OBD interface connected to a vehicle-side power supply.
6. The OBD-based vehicle exhaust emission monitoring device of claim 5, wherein the device wake-up unit comprises a voltage regulator tube and a switch tube;
the cathode of the voltage stabilizing tube is used as a voltage detection end of the device awakening unit and is connected to a power pin in an OBD interface of the vehicle; the anode of the voltage regulator tube is connected to the first pole of the switch tube through a first resistor, the second pole of the switch tube is grounded, the third pole of the switch tube is connected to the direct current power supply through a second resistor, and the third pole of the switch tube is connected to the IO port of the data processing unit;
the switch tube is a triode or a field effect tube; when the switch tube is a triode, the first pole of the switch tube is a base electrode, the second pole is an emitting electrode, and the third pole is a collector electrode; when the switch tube is a field effect tube, the first pole of the switch tube is a grid electrode, the second pole is a source electrode, and the third pole is a drain electrode.
7. The OBD-based vehicle exhaust emission monitoring device according to claim 1, further comprising a device removal warning unit connected to the data processing unit, the device removal warning unit being connected to a power pin in the vehicle OBD interface, the power pin being a pin in the vehicle OBD interface connected to a vehicle-side power supply;
the device removal warning unit comprises an ADC (analog to digital converter) acquisition module, the ADC acquisition module is connected with the data processing unit, and the device removal warning unit is connected to a power pin in an OBD (on-board diagnostics) interface of the vehicle through the ADC acquisition module.
8. The OBD-based vehicle exhaust emission monitoring device of claim 1, further comprising a data storage device coupled to the data processing unit.
9. The OBD-based vehicle exhaust emission monitoring device according to any of the claims 1 to 8, further comprising a connection port through which the OBD data acquisition unit is connected to a vehicle OBD interface; the device awakening unit and the equipment removal warning unit connected with the data processing unit are connected to a power supply pin in the vehicle OBD interface through the connecting port, and the power supply pin is connected with a vehicle-side power supply in the vehicle OBD interface.
10. A vehicle comprising an OBD based vehicle exhaust emission monitoring device according to any of claims 1 to 9.
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| CN202020431119.5U CN211975124U (en) | 2020-03-30 | 2020-03-30 | Vehicle exhaust emission monitoring device and vehicle based on OBD |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115035713A (en) * | 2022-04-29 | 2022-09-09 | 银江技术股份有限公司 | Intelligent traffic carbon emission monitoring system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115035713A (en) * | 2022-04-29 | 2022-09-09 | 银江技术股份有限公司 | Intelligent traffic carbon emission monitoring system and method |
| CN115035713B (en) * | 2022-04-29 | 2023-08-25 | 银江技术股份有限公司 | Intelligent traffic carbon emission monitoring system and method |
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