Bidding procurement process information management system

Abstract

The invention discloses a bidding procurement process information management system, comprising a signal input circuit, a frequency modulation rectification circuit and a filter output circuit. The signal input circuit receives a signal of the input end of a signal transmission channel for receiving a data signal of a control terminal in the bidding procurement process information management system. The frequency modulation rectification circuit receives a signal output by the signal input circuit, modulates the frequency of the signal by using an frequency modulation circuit formed by an operational amplifier AR1 and triodes Q1 to Q4, rectifies the signal by using a rectifying circuit formed by an operational amplifier AR2, an operational amplifier AR3, an operational amplifier AR4, a capacitor C4 and a resistor R9, and adjusts the amplitude of the output signal of the rectifying circuit by using the feedback of a triode Q5 and a triode. Finally, the filter output circuit amplifies the signal in phase by using an operational amplifier AR5, forms a filtering circuit by an operational amplifier AR6, a capacitor C5 and a resistor R14 to filter and then output a signal. The bidding procurement process information management system realizes automatic signal calibration, improves signal stability, and prevents signal frequency modulation and distortion.

Description

technical field [0001] The invention relates to the technical field of information management systems, in particular to an information management system for bidding and purchasing processes. Background technique [0002] The 21st century is an era of knowledge economy characterized by "informatization", which involves all walks of life, and the information in the bidding and procurement process is also processed by "informatization". The information management system of the bidding and procurement process has replaced the traditional manual or simple computer information processing The method realizes the unified and intelligent processing of information in the bidding and procurement process, improves the security and confidentiality of information and the efficiency of data processing. In the system, the control terminal receives data signals at the same time, which is quite complicated. Frequently, the data signals received by the control terminal in the information manag...

AI Technical Summary

Problems solved by technology

[0002] The 21st century is an era of knowledge economy characterized by "informatization", which involves all walks of life, and the information in the bidding and procurement process is also processed by "informatization". The information management system of the bidding and procurement process has replaced the traditional manual or simple computer information processing The method realizes the unified and intelligent processing of information in the bidding and procurement process, improves the security and confidentiality of information and the efficiency of data processing. In the system, the control terminal receives data signals at the same time, which is quite complicated. Frequently, the data signals received by the control terminal in the information management system of the bidding and procurement process will appear frequency hopping or even distorted, which will lead to the disorder of the information management system of the bidding and procurement process. The bidding procurement process brings serious errors, which may even cause the loss of bidding projects

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