Ion signal detection circuit

Abstract

The invention provides an ion signal detection circuit. The ion signal detection circuit comprises at least one operational amplifier and a voltage conditioning circuit connected with each operational amplifier; the operational amplifier is used for receiving a target ion signal, amplifying the target ion signal and outputting an amplified ion signal to the voltage conditioning circuit; and the voltage conditioning circuit is used for adjusting the amplified ion signal and outputting a target detection voltage signal. According to the ion signal detection circuit provided by the invention, the operational amplifier is utilized to amplify the ion signal, and the voltage conditioning circuit is utilized to perform multi-stage filtering on the amplified signal, so that most of high-frequency noise in the signal, including power supply noise, external noise and noise of the circuit, can be removed, and the signal stability is improved, multi-channel synchronous detection can be realized, the channels do not interfere with each other, and the detection precision and stability are high.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an ion signal detection circuit. Background technique [0002] Real-time and accurate detection of ion signals is a technical problem that needs to be solved urgently, and multi-channel detection increases the difficulty of ion detection. [0003] At present, methods for detecting ion signals generally use soil ion detection methods such as flame photometers, chromatographs, and microtitrators. Their common feature is that they can only analyze the characteristics of a single ion. [0004] There are a variety of signal detection instruments on the market, such as photometers and chromatographs. The former can only detect the concentration of a single ion, and the preparation time before detection is too long; and the chromatograph is expensive, and ordinary testing personnel cannot afford such a high cost. the cost of. [0005] In view of this, it has become a resea...

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Problems solved by technology

[0003] At present, methods for detecting ion signals generally use soil ion detection methods such as flame photometers, chromatographs, and microtiters, and their common feature is that they can only Enables analysis of single ion properties

[0004]There are various signal detection instruments on the market, such as photometers and chromatographs. The former can only detect the concentration of a single ion, and the preparation time before detection is too long; However, due to the expensive equipment of the chromatograph, the general testing personnel cannot afford such a high cost.

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