Large-dynamic range high-precision sensor port simulation signal generation device

Abstract

The invention relates to a large-dynamic range high-precision sensor port simulation signal generation device and relates to the technical field of generation of complex sensor port simulation signals. The generation device comprises a USB communication port and a programmable logic device. The output of the programmable logic device is connected to a high-voltage output circuit through a high-precision D / A transformation circuit and a signal conditioning filtering circuit. The output of the high-voltage output circuit is connected to a voltage transformation circuit and an output port. The output of the voltage transformation circuit is connected to the programmable logic device through the high-precision D / A transformation circuit. According to the invention, signals generated by the generation device are characterized by large signal amplitude adjusting range, high signal frequency and amplitude output precision and slight output distortion of high-voltage signals. Due to the characteristic of slight output distortion of high-voltage signals, problems of low output voltage and relatively serious signal distortion of a current signal generation device are overcome. According to the invention, actual requirements of all kinds of complex sensor port simulation signal generation devices imposed by a sensor test system can be met.

Description

technical field

[0001] The invention relates to the field of complex sensor interface analog signal generation, in particular to a large dynamic high-precision sensor interface analog signal generation device. Background technique

[0002] In the development and production process of the sensor test system, it is necessary to generate various simulated sensor interface signals and input them into the sensor test system to evaluate the measurement accuracy of the sensor test system and verify its reliability. The existing various signal generating devices can not meet the requirements of large dynamics and high precision at the same time, so that when using these existing signal generating devices to test and evaluate some complex sensor test systems, the consistency of the evaluation results is poor, which affects the The question of assessing the credibility of the results. SUMMARY OF THE INVENTION

[0003] The invention provides a large dynamic and high-precision sensor...

Examples

Embodiment Construction

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like figure 1 As shown, the present invention is a large dynamic high-precision sensor interface analog signal generating device, which includes two parts: software and hardware.

[0020] The hardware part includes a USB communication interface 1, a programmable logic device 2, a high-precision D / A conversion circuit 3, a signal conditioning filter circuit 4, a high-voltage output circuit 5, an output interface 6, a voltage conversion circuit 7, and a high-precision A / D circuit. Conversion circuit 8 and power distribution circuit 9 . The USB communication interface 1 receives commands and information from the outside. Under the control of the programmable logic device 2, the signals are transformed through multiple circuits for many times, and finally output from the output interface 6 to test and evaluate the sensor test system.

[0021] Among t...

technical field

[0001] The invention relates to the field of complex sensor interface analog signal generation, in particular to a large dynamic high-precision sensor interface analog signal generation device. Background technique

[0002] In the development and production process of the sensor test system, it is necessary to generate various simulated sensor interface signals and input them into the sensor test system to evaluate the measurement accuracy of the sensor test system and verify its reliability. The existing various signal generating devices can not meet the requirements of large dynamics and high precision at the same time, so that when using these existing signal generating devices to test and evaluate some complex sensor test systems, the consistency of the evaluation results is poor, which affects the The question of assessing the credibility of the results. SUMMARY OF THE INVENTION

[0003] The invention provides a large dynamic and high-precision sensor...

Examples

Embodiment Construction

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] like figure 1 As shown, the present invention is a large dynamic high-precision sensor interface analog signal generating device, which includes two parts: software and hardware.

[0020] The hardware part includes a USB communication interface 1, a programmable logic device 2, a high-precision D / A conversion circuit 3, a signal conditioning filter circuit 4, a high-voltage output circuit 5, an output interface 6, a voltage conversion circuit 7, and a high-precision A / D circuit. Conversion circuit 8 and power distribution circuit 9 . The USB communication interface 1 receives commands and information from the outside. Under the control of the programmable logic device 2, the signals are transformed through multiple circuits for many times, and finally output from the output interface 6 to test and evaluate the sensor test system.

[0021] Among t...

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