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Diagnostic method for bias power supply of an acquisition system including an array interface device

A technology of acquisition system and bias power supply, which is applied in general control system, power supply test, measurement device, etc.

Active Publication Date: 2021-11-02
CONTINENTAL AUTOMOTIVE FRANCE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the present invention solves the power supply diagnosis problem by only modifying the software without adding any hardware

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  • Diagnostic method for bias power supply of an acquisition system including an array interface device

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Embodiment Construction

[0052] Other features, details and advantages of the invention will become apparent from the following detailed description.

[0053] Diagnostics checking the presence and correct operation of the bias power supply Ak can be performed for such an acquisition system comprising the processing unit U and the array device M.

[0054] For this, the input port Ink corresponding to the shunt Sk1 is read. If there is a shunt Sk1 on row k (which is the case in an advantageous configuration of the array device M), it must be the only shunt and it is arranged on the column denoted column l, i.e. Coll .

[0055] Thus, if the l-th output port Outl is controlled during reading of the input port Ink corresponding to the shunt Skl, the shunt Skl is connected to ground through its column Coll and to the power supply Ak through its row Ligk. Therefore, if the power supply Ak is normally present, the input port Ink should observe a low state. If a high state is observed, a fault is indicated ...

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Abstract

The subject of the invention is a diagnostic method of bias power for an acquisition system comprising an array interface device (M) comprising conductive rows (Ligi) and conductive columns (Colj), each row ( Ligi) is connected to the input port (Ini) and the bias supply (Ai), each column (Colj) is selectively connected to ground (G) by controlling the output port (Outj), and at each intersection point is the intersection A circuit (Cij) or a shunt (Sij) connected between a row (Ligi) of , and an intersecting column (Colj), the method comprising the steps of: controlling the output port (Outl) so as to connect the shunt (Skl) to ground ( G), read the input port (Ink) corresponding to the shunt (Skl), the low state indicates the normal presence of the power supply (Ak), and the high state indicates the abnormal absence.

Description

technical field [0001] The present invention relates to a method of diagnosing a bias power supply for an acquisition system comprising an array interface device. Background technique [0002] In the field of acquiring state values ​​of circuits it is known to employ array interface devices. This arrangement facilitates the multiplexing of circuits over time, usually logic (switching (tout ou rien)) circuits, whose state changes are on average slower than the acquisition cycle, and thus can be acquired at different times. [0003] An array device comprising n rows and m columns enables interfacing n x m circuits. It only needs n input ports and m output ports for its connection with the processing unit. With these n + m ports, a certain saving in the number of useful ports can be observed compared to the n x m input ports required for conventional lines to interface with each circuit via one input port. [0004] An advantage of the array arrangement is that it can signifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/28G01R31/317B60R16/023
CPCG01R31/317G01R31/40G01R31/31721G05B23/0221
Inventor C.普拉代勒A.劳纳J-C.普鲁瓦耶尔
Owner CONTINENTAL AUTOMOTIVE FRANCE
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