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Vehicle-mounted non-road mechanical tail gas emission wireless transmission measuring system and method

A technology of tail gas emission and wireless transmission, which is applied in signal transmission systems, measuring devices, and analysis of gas mixtures, etc., can solve the problems of impossible data observation by personnel, harsh environmental conditions, restrictions, etc., and achieve a good measurement and test operation platform, small size , the effect of easy operation

Inactive Publication Date: 2017-08-22
SICHUAN UNIV
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Problems solved by technology

The second is that the environmental conditions of the construction site of non-road machinery are generally harsh, and it is basically impossible for personnel to enter the measurement site synchronously with the machine for data observation
The above two points greatly limit the application of conventional portable systems in the measurement of off-road machinery exhaust emissions

Method used

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  • Vehicle-mounted non-road mechanical tail gas emission wireless transmission measuring system and method
  • Vehicle-mounted non-road mechanical tail gas emission wireless transmission measuring system and method
  • Vehicle-mounted non-road mechanical tail gas emission wireless transmission measuring system and method

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Embodiment Construction

[0024] refer to Figure 1-3 , a vehicle-mounted off-road mechanical exhaust emissions wireless transmission measurement method of the present invention, comprising the following steps:

[0025] The host computer 100 generates a command signal and sends the command data to the host 200 through the serial port, the processor of the host 200 sends the command data to the first radio frequency chip, and the first radio frequency chip transmits the command data to the first radio frequency chip after receiving the command data The internal FIFO module forms a ring signal wave to radiate the surrounding space through the antenna.

[0026] After the slave 300 receives the command from the host 200, the pin potential of the second radio frequency chip in the slave 300 decreases, and then reads the status register of the second radio frequency chip to determine whether the reception is interrupted. If the reception is interrupted, Then read the data sent by the host 200 from the FIFO ...

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Abstract

The invention discloses a vehicle-mounted non-road mechanical tail gas emission wireless transmission measuring system and a measuring method. The method comprises the following steps: generating a command signal by an upper computer and sending the command data to a host computerthrough a serial port, sending the command data to a first wireless radio frequency chip by a processor of the host computer, and transmitting the command data received by the first wireless radio frequency chip to an FIFO module in the first wireless radio frequency chip to form an annular signal wave to radiate the peripheral space through an antenna; after receiving a command sent by the host computer, reducing the potential of a pin of a second wireless radio frequency chipin a slave, then reading a state register of the second wireless radio frequency chip, and judging whether reception is interrupted or not, if so, reading data sent by the host computer from the FIFO module of the second wireless radio frequency chip, then sending the data from a serial port of the slave to a gas analyzer which collects gas, and returning data of the gas by the gas analyzer. The measuring system disclosed by the invention is stable in data transmission and simple and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of air quality detection, and in particular relates to a vehicle-mounted non-road machinery exhaust emission wireless transmission measurement system and method. Background technique [0002] Due to the aggravation of regional smog weather, in recent years, major cities across the country have begun to establish air quality monitoring stations and issue daily air quality forecasts. Smog is mainly formed by excessive discharge of pollutants from ground pollution sources to the atmosphere. Ground pollution sources mainly include point sources, non-point sources, and mobile sources. The mobile sources include road mobile sources and non-road mobile sources. Road mobile sources mainly refer to motor vehicles, and non-road mobile sources are the main objects of the present invention. The main pollutants emitted by off-road mobile sources are NOx and fine particulate matter. These two substances are important po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G08C17/02
CPCG01N33/0004G08C17/02
Inventor 张凯山李臻王帆马帅王婧婕第宝锋
Owner SICHUAN UNIV
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