Daisy chain communication simulation test system

A simulation test and daisy chain technology, applied in the field of automation, can solve problems such as the inability to directly expand the daisy chain communication test, and achieve the effect of improving test efficiency and reducing costs

Active Publication Date: 2020-09-01
上海同湛新能源科技有限公司
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Problems solved by technology

[0004] At present, the test methods and test tools for the conventional field communication bus a

Method used

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  • Daisy chain communication simulation test system
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  • Daisy chain communication simulation test system

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Experimental program
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Embodiment 2

[0030] Embodiment 2: On the basis of Embodiment 1, in order to truly simulate the communication characteristics of the chip, it is necessary to model according to the daisy chain communication mode of the chip, the state machine and register information inside the chip, and run on the real-time system The model responds according to the instructions it receives. Usually the model is divided into four parts: battery pack configuration parameter information, command response and communication control, chip internal state simulation, and fault injection.

[0031] (1) The battery configuration parameter information module is an interface for model testers to interact. The model includes the number of daisy chain communication nodes of the battery system and the configuration of the voltage and temperature collected by each node, as well as the voltage setting and temperature setting of each battery, and the equalization command setting. In addition, it also includes uploading and...

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Abstract

The invention discloses a daisy chain communication simulation test system. The system comprises a monitoring upper computer interface, a target chip simulation model, an operation real-time system, adaisy chain physical layer conversion circuit and a hardware fault injection module. The monitoring upper computer interface is used for configuring test parameters, setting fault injection and monitoring the running state of the whole test system; the simulation model includes an internal state machine, communication logic, register configuration and a fault exception handling mechanism of a simulation chip. The compiled simulation model runs in a real-time system; and signal output of the physical layer is controlled according to a model output result. The daisy chain communication system testing system can efficiently and rapidly achieve testing and diagnosis of a daisy chain communication system, can be linked with an existing HIL rack to achieve closed-loop operation of the whole testing system, improves the testing efficiency and reduces the cost at the same time.

Description

technical field [0001] The invention relates to the technical field of automation, in particular to a daisy chain communication simulation test system. Background technique [0002] The battery management system is one of the core components of the "three electrics" of new energy vehicles. With the continuous advancement of electric vehicle technology, the reliability and cost of the battery management system have attracted much attention. The early BMS architectures used the distributed architecture based on the CAN bus, which has the advantages of high reliability and flexible grouping, but each slave controller needs to be equipped with a single-chip microcomputer chip with a CAN bus, which increases the hardware of the system. cost. In addition, because lithium-ion batteries are connected in series in the car, the sampling reference potentials of different front-end analog chips AFE (Analog Front End) are very different. The use of CAN bus communication also requires is...

Claims

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Application Information

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IPC IPC(8): H04B17/391H04L12/26H04L12/44
CPCH04B17/3912H04L43/0823H04L43/08H04L43/50H04L12/44
Inventor 陈金干袁永军李鑫杨宏莅
Owner 上海同湛新能源科技有限公司
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