A daisy-chain communication simulation test system

A technology of simulation test and daisy chain, which is 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: 2022-08-05
上海同湛新能源科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the test methods and test tools for the conventional field communication bus are very mature, but they cannot be directly extended to the test of the daisy chain communication

Method used

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  • A daisy-chain communication simulation test system
  • A daisy-chain communication simulation test system
  • A daisy-chain communication simulation test system

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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, etc., and run on the real-time system. The model responds according to the received commands. 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 the 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 and temperature settings of each battery, and the equalization command settings. In addition, it also includes the upload and disp...

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Abstract

The invention discloses a daisy-chain communication simulation test system, comprising a monitoring host computer interface, a target chip simulation model, a real-time running system, a daisy-chain physical layer conversion circuit and a hardware fault injection module. The monitoring host computer interface is used for configuration testing parameters, set fault injection and monitor the running status of the entire test system. The simulation model is the internal state machine, communication logic, register configuration and fault exception handling mechanism of the simulated chip. The compiled simulation model runs on the real-time system and outputs according to the model. The result controls the signal output of the physical layer, and at the same time feeds back the current operating internal parameter state in real time. The test system of the present invention can efficiently and quickly realize the test and diagnosis of the daisy-chain communication system, and can be linked with the existing HIL bench to realize the entire test. The closed-loop operation of the system improves the test efficiency and reduces the cost.

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 powers" of new energy vehicles. With the continuous progress of electric vehicle technology, the reliability and cost of the battery management system have attracted much attention. The early BMS architecture adopts a distributed architecture based on CAN bus, which has the advantages of high reliability and flexible grouping mode, but each slave controller needs to be equipped with a single-chip microcomputer chip with CAN bus, which increases the hardware of the system. cost. In addition, since the lithium-ion batteries are connected in series in the car, the sampling reference potential of different front-end analog chips AFE (Analog Front End) is very different. The use of CAN bus communication also requires isolation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/391H04L43/0823H04L43/08H04L43/50H04L12/44
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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