Double-MCU real-time data acquisition control system and method for motor vehicle tail gas detection
A technology of real-time data acquisition and exhaust gas detection, applied in general control systems, control/regulation systems, computer control, etc., to achieve the effects of fast response speed, high detection accuracy, and accurate gas concentration detection
Pending Publication Date: 2022-03-18
ANHUI QINGYU PHOTOELECTRIC TECH
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Problems solved by technology
[0008] Aiming at the problem that the spectrum acquisition system of the motor vehicle exhaust remote sensing monitoring equipment in the prior art can only collect a single type of spectrum, the present invention provides a dual MCU real-time data acquisition control system and method for motor vehicle exhaust detection, which can Realize the use of dual MCUs to realize real-time spectrum acquisition, transmit multiple spectrum data and take into account the acquisition control of the control function, the system cost is low, the reliability is high, the response time is fast, and the detection error is small
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[0034] figure 1 It is a system structure diagram of this embodiment, and the system includes a first microcontroller 1 and a second microcontroller 2 as dual cores for complex spectral transmission, system control and parameter adjustment.
[0035]In this embodiment, the first microcontroller 1 and the second microcontroller 2 respectively adopt the PIC24FJ256GB210 microcontroller and the dsPIC30F6014A microcontroller of Microchip Company, and the two controller chips described in the present embodiment have good compatibility, and It can save unnecessary trouble for subsequent upgrades. The PIC24FJ256GB210 microcontroller as the first microcontroller 1 has 24 channels of 10-bit ADC inside, which can ensure the accuracy of opacity detection, and the dsPIC30F6014A microcontroller as the second microcontroller 2 integrates a DSP engine inside, which can Do some preliminary signal processing on the IR absorption spectrum if necessary.
[0036] Such as figure 1 As shown, the co...
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The invention discloses a double-MCU (Microprogrammed Control Unit) real-time data acquisition control system and a double-MCU real-time data acquisition control method for motor vehicle exhaust gas detection, and belongs to the technical field of spectrum acquisition control. By designing a peripheral circuit and utilizing an integrated functional module in the microcontroller, collection of various and large spectral data in the motor vehicle exhaust remote sensing detection equipment and control and adjustment of each detection subsystem are completed. And the real-time performance of the system is ensured by reasonably setting the priority of multiple tasks according to the system characteristics. By applying the system, a group of detection data including the infrared absorption spectrum, the ultraviolet spectrum and the light intensity of the lightproof green light can be uploaded within 45ms, the detection error of the concentration of the pollution gas is far lower than the requirements of relevant national laws and regulations, and the system is low in cost, high in reliability and stable in work.
Description
technical field [0001] The invention relates to the technical field of spectrum acquisition and control, and more specifically relates to a dual-MCU real-time data acquisition and control system and method for motor vehicle exhaust detection. Background technique [0002] The main pollutants in motor vehicle exhaust include carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen oxides (NO X ), hydrocarbons (HC) and other particulate matter. These pollutants have great harm to the surrounding environment and the human body. In order to achieve effective control of motor vehicle exhaust emissions and formulate standards for the identification and control of motor vehicle exhaust, the detection of motor vehicle exhaust pollutants has become an indispensable link. [0003] In order to realize the effective detection of pollutants in motor vehicle exhaust, detection methods using different detection technologies have emerged as the times require, such as: working condition meth...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 陈庆华赵读俊左昌余
Owner ANHUI QINGYU PHOTOELECTRIC TECH