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Data acquisition control system based on CAN bus

A CAN bus, data acquisition technology, applied in the fixed station through two conductor transmission systems, circuits or fluid pipelines, transportation and packaging, etc., can solve the problems of poor anti-interference, many data interfaces, and no unified standardized processing. To achieve the effect of convenient connection and strong anti-interference performance

Inactive Publication Date: 2005-06-29
SHANGHAI FUEL CELL VEHICLE POWERTRAIN +1
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AI Technical Summary

Problems solved by technology

In the process of data collection and transmission, the entire system has poor anti-interference, many data interfaces, no unified standardized processing, and cannot directly exchange data with various vehicle-mounted and test bench test equipment

Method used

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  • Data acquisition control system based on CAN bus

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Embodiment approach

[0013] The automotive data acquisition and control system is suitable for different measurement occasions by combining different primary instruments. The primary instrument and actuator layer 3 are sensors and actuators that meet different applications, including thermocouples, pressure sensors, acceleration sensors, and motors. , relays, etc.; the intelligent secondary instrument CAN node layer 2 connected with the primary instrument and the actuator layer 3 mainly completes the signal conditioning and driving functions, and the CAN node layer 2 of different intelligent secondary instruments cooperates with the corresponding primary instrument. The signal is converted into a voltage signal, current signal or digital logic quantity that can be directly connected to the general signal acquisition card, and the upper layer control signal is driven through the drive module to drive the lower stepping motor, relay and other actuators to complete the predetermined acquisition and con...

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Abstract

The invention relates to a kind of data gathering system based on CAN bus. It consist of the first meter layer which includes sensor and transactor, the secondary meter layer and the data recording&displaying layer. The trait is all the secondary meter in the secondary meter layer is intelligent meter installed unified CAN communication interface which form the intelligent meter CAN nodes layer. The data recording&displaying layer above is just the data gathering / controlling layer. It all installed with CAN communication interface which make the bus configuring / data gathering / controlling layer. The bus configuring / data gathering / controlling layer communicate through the CAN bus with the intelligent meter CAN nodes layer and within all other layer. The data of the first meter layer is transformed by the intelligent second meter layer into CAN bus linear data and send to the upper terminal of the bus configuring / data gathering / controlling layer. The whole process is highly anti-jamming with unified standard interface and extendable to suit different needs in different test. The data gathering and controlling system could be connected to and exchange data with other experimental device on the car or on the lab table.

Description

technical field [0001] The invention relates to a data acquisition and control system, more specifically, it relates to a CAN bus-based data acquisition and control system. Background technique [0002] The CAN bus communication network is one of the bus communication networks for data exchange of intelligent devices such as automotive controllers. Most of the general data acquisition and control systems are composed of three levels: the primary instrument layer including sensors and actuators, and the secondary instrument layer. and record and display layers. [0003] Among the above three levels, the primary instrument level is sensors and actuators that meet different application scenarios. These industry-standard sensors and actuators are tested for physical quantities including thermocouples, pressure sensors, acceleration sensors, motors, relays, etc. [0004] The secondary instrument connected to the primary instrument mainly completes the signal conditioning and dr...

Claims

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Application Information

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IPC IPC(8): B60R16/02H04B3/50
Inventor 万钢钟再敏孙泽昌魏学哲陈觉晓徐斌李计融
Owner SHANGHAI FUEL CELL VEHICLE POWERTRAIN
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