Bidding procurement process information management system

A technology for managing system and process information, applied in the field of information management system for bidding and procurement process, can solve the problems of error, redundancy, control terminal data signal frequency hopping in the bidding and procurement process, etc., to improve stability, prevent frequency hopping and distortion, improve The effect of on-potential

Active Publication Date: 2019-12-20
PINGDINGSHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Bidding procurement process information management system
  • Bidding procurement process information management system
  • Bidding procurement process information management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, the bidding procurement process information management system includes a signal input circuit, a frequency modulation rectification circuit and a filter output circuit, the signal input circuit receives the signal at the input end of the signal transmission channel for the control terminal to receive data signals in the bidding procurement process information management system , using inductance L1, capacitor C1, and capacitor C2 to form a π-type filter circuit for filtering, the frequency modulation rectifier circuit receives the signal output by the signal input circuit, and uses the op amp AR1 and transistor Q1~transistor Q4 to form a frequency modulation circuit to frequency modulate the signal, and at the same time Use op amp AR2, op amp AR3, op amp AR4, capacitor C4, and resistor R9 to form a rectification circuit to rectify the signal, and use triode Q5 and triode Q6 to feedback and adjust the output signal amplitude of the rectifier circuit. Finally,...

Embodiment 2

[0016] Embodiment 2. On the basis of Embodiment 1, the filter output circuit uses the operational amplifier AR5 to amplify the signal in phase, and simultaneously uses the operational amplifier AR6, capacitor C5, and resistor R14 to form a filter circuit to filter and output, which improves the signal resistance. Interference, that is, in the signal transmission channel for the control terminal to receive data signals in the information management system of the input bidding and procurement process, the non-inverting input terminal of the operational amplifier AR5 is connected to the output terminal of the operational amplifier AR4, and the inverting input of the operational amplifier AR5 Terminate resistor R12, one end of resistor R13 and the output end of operational amplifier AR5, the other end of resistor R12 is grounded, the other end of resistor R13 is connected to resistor R14, one end of resistor R15, the other end of resistor R15 is connected to one end of capacitor C5 ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H03F3/68H03H1/02H03H5/00H04L27/10
CPCH03F3/68H03H1/02H03H5/00H04B1/40H04L27/10
Inventor 贺杰张小雪罗晨阳王宏伟郑浩位营杰米冰冰
Owner PINGDINGSHAN UNIVERSITY
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