Digital signal conditioning device

Abstract

The invention discloses a digital signal conditioning device. The device comprises a test mainboard connected with a real-time system and a tested controller, wherein the test mainboard is provided with a real-time system docking circuit, a control circuit, a microcontroller, an interface circuit, a plurality of sampling circuits and a plurality of driving circuits separately; each sampling circuit is connected with the real-time system docking circuit and the interface circuit separately; each driving circuit is electrically connected with the control circuit and the interface circuit separately; and the control circuit is connected with the real-time system docking circuit, the microcontroller and the interface circuit separately. According to the invention, the control circuit receivesa control instruction sent by the microcontroller and controls the real-time system docking circuit, the driving circuit and the interface circuit to realize working mode conversion, driving circuit output mode conversion and the input and output modes of the interface circuit separately so as to cope with different circuit forms and improve system flexibility.

Description

technical field [0001] The invention relates to the field of digital signal measurement and control, in particular to a digital signal conditioning device. Background technique [0002] A typical controller includes a computing core CPU and a digital interface, an analog interface, a drive interface, and a bus interface, etc., which transmit information with the outside world. The digital interface can be subdivided into input channels and output channels, and the output channels are It is divided into pull-up, pull-down, push-pull output, etc. For different circuit forms, the general controller will fix each channel as a specific circuit form to connect with the external environment according to the design requirements. [0003] Since the external digital sensors or devices to be connected to the controller have different interface forms, the digital interface of the controller must correspond to it, and different voltage ranges and circuit forms need to be designed, which ...

AI Technical Summary

Problems solved by technology

[0003] Since the external digital sensors or devices to be connected to the controller have different interface forms, the digital interface of the controller must correspond to it, and different voltage ranges and circuit forms need to be designed, which will reduce the flexibility of the system. At the same time, the test of this type of controller The system must also have a corresponding interface circuit form. In order to be compatible with the test of different controllers, the test system must also have more digital channels with different interface forms, which seriously reduces the system flexibility, resulting in a large system and increased costs.

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