A multi-type analog signal processing circuit powered by a single power supply

A technology for simulating signals and processing circuits, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of low modularity, single input signal type, complex power supply system, etc., to simplify the power supply system and reduce manufacturing. cost, the effect of improving the degree of modularity

Inactive Publication Date: 2016-03-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of complex power supply system, single input signal type, and low modularization degree of the existing analog signal processing circuit, and now provides a multi-type analog signal processing circuit powered by a single power supply

Method used

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  • A multi-type analog signal processing circuit powered by a single power supply
  • A multi-type analog signal processing circuit powered by a single power supply
  • A multi-type analog signal processing circuit powered by a single power supply

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specific Embodiment approach 1

[0044] Specific implementation mode 1: refer to figure 1 To specifically describe this embodiment, a multi-type analog signal processing circuit powered by a single power supply described in this embodiment includes: an overvoltage protection circuit 1, a filter voltage divider circuit 2, a bias circuit 3, a unity gain circuit 4 and Signal type selection circuit 5;

[0045] The two signal input terminals of the overvoltage protection circuit 1 are respectively used as two signal input terminals of a multi-type analog signal processing circuit powered by a single power supply,

[0046] The two signal output ends of the overvoltage protection circuit 1 are respectively connected to the two signal input ends of the filter voltage divider circuit 2,

[0047] The reference signal input end of the filter voltage divider circuit 2 is connected to the reference signal output end of the bias circuit 3,

[0048] The filter signal output end of the filter voltage divider circuit 2 is c...

specific Embodiment approach 2

[0056] Specific implementation two: refer to image 3 This embodiment is described in detail. This embodiment further describes a multi-type analog signal processing circuit powered by a single power supply described in Embodiment 1. In this embodiment, the overvoltage protection circuit 1 includes: a capacitor C1 , No. 11 resistor R11, No.12 resistor R12, No.13 resistor R13, No.14 resistor R14, No.15 resistor R15, No.11 transient suppression diode D11, No.12 transient suppression diode D12 and a No. 3 TVS diode D13;

[0057] One end of the No. 1 capacitor C1 is connected to one end of the No. 1 resistor R11 and serves as a signal input terminal of the overvoltage protection circuit 1 at the same time, and the other end of the No. 1 capacitor C1 is connected to one end of the No. 1 resistor R12 and serves as an overvoltage The other signal input terminal of protection circuit 1,

[0058] The other end of resistor R11 No. 1 is connected to one end of TVS diode D11 No. 1, one ...

specific Embodiment approach 3

[0067] Specific implementation mode three: refer to Figure 4 This embodiment is described in detail. This embodiment further describes a multi-type analog signal processing circuit powered by a single power supply described in Embodiment 1. In this embodiment, the filter voltage divider circuit 2 includes: a No. 2 capacitor C2 , No. 3 capacitor C3, No. 21 resistor R21 and No. 22 resistor R22;

[0068] One end of the No. 21 resistor R21 is used as a signal input end of the filter voltage divider circuit 2,

[0069] The other end of the No. 21 resistor R21 is connected to one end of the No. 2 capacitor C2 and one end of the No. 3 capacitor C3 at the same time.

[0070] The other end of the No. 2 capacitor C2 is connected to one end of the No. 2 resistor R22, and serves as another signal input terminal and a reference signal input terminal of the filter voltage divider circuit 2 at the same time.

[0071] The other end of the No. 3 capacitor C3 is connected to the other end of...

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Abstract

The invention discloses a multi-type analog signal processing circuit supplied with power through a single power supply, belongs to the technical field of electronic circuits, and aims to solve the problems of complex power supply system, single type of input signals and low modularization degree in the conventional analog signal processing circuit. According to the multi-type analog signal processing circuit supplied with power through the single power supply, the working mode of the whole circuit can be switched through switch-on / off of a change-over switch, so that the multi-type analog signal processing circuit can be used for processing a plurality of types of analog signals such as current, voltage, single-polarity, multi-polarity, single-end input and differential input signals in a compatible way, the modularization degree of a system is increased, and the circuit research and development periods are reduced; overvoltage protection and filtering functions are realized, and the system has protection and interference resistance capabilities; meanwhile, the single power supply is adopted for supplying power, so that a power supply system is simplified, and the manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits. Background technique [0002] The processing of analog signals is a fundamental problem in the field of measurement and control. For different sensors, the analog signal can be divided into two types: current signal and voltage signal; according to different level characteristics, it can be divided into two types: unipolar and bipolar; according to the output mode of the signal, it can be divided into single-ended and difference. Differential input mode has better anti-interference ability than single-ended input mode, but because the power supply of microcomputer system (MCU) chips such as single-chip microcomputer (SCM), digital signal processor (DSP), programmable logic array (FPGA), etc. Power supply, so that the analog signal must be converted to a unipolar single-ended input signal before entering the MCU. [0003] The traditional bipolar signal to unipolar signal, differenti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/571
Inventor 张忠典夏裕俊张忠泽朱世良张芮夏振新叶明光
Owner HARBIN INST OF TECH
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