CN109391286B - Bidding purchasing process information management system - Google Patents
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Abstract
本发明公开了招标采购过程信息管理系统，包括信号输入电路、调频整流电路和滤波输出电路，所述信号输入电路接收招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内输入端的信号，所述调频整流电路接收信号输入电路输出的信号，并运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，并且运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，最后所述滤波输出电路运用运放器AR5同相放大信号，同时运用运放器AR6和电容C5、电阻R14组成滤波电路滤波后输出，实现了对信号自动校准，提高了信号的稳定性，防止了信号调频和失真。
The invention discloses an information management system for the bidding and purchasing process, which 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 and purchasing process information management system. , the frequency modulation rectifier circuit receives the signal output by the signal input circuit, and uses the operational amplifier AR1 and the transistor Q1~transistor Q4 to form a frequency modulation circuit to modulate the frequency of the signal, and simultaneously uses the operational amplifier AR2, the operational amplifier AR3 and the operational amplifier AR4 and Capacitor C4 and resistor R9 form a rectification circuit to rectify the signal, and use transistor Q5 and transistor Q6 to feedback and adjust the output signal amplitude of the rectification circuit. Finally, the filter output circuit uses op-amp AR5 to amplify the signal in phase, and simultaneously uses op-amp AR6 and Capacitor C5 and resistor R14 form a filter circuit to filter and output, which realizes automatic signal calibration, improves signal stability, and prevents signal frequency modulation and distortion.
Description
技术领域technical field
本发明涉及信息管理系统技术领域，特别是涉及招标采购过程信息管理系统。The invention relates to the technical field of information management systems, in particular to an information management system for bidding and purchasing processes.
背景技术Background technique
21世纪是以“信息化”为特征的知识经济时代，涉及到各行各业，而招标采购过程信息也被“信息化”处理，招标采购过程信息管理系统取代了传统的人工或简易计算机信息处理方法，实现了招标采购过程信息统一智能化处理，提高了信息的安全性和保密性以及数据的处理效率，然而在实际中，由于招标采购过程信息数据越来越冗杂，导致招标采购过程信息管理系统中控制终端同时接收数据信号较为冗杂，时常会发生招标采购过程信息管理系统中控制终端接收到的数据信号会出现跳频，甚至失真的现象，导致招标采购过程信息管理系统的紊乱，给整个招标采购过程带来严重的误差，甚至会造成招标项目的流失。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 and procurement process brings serious errors, which may even cause the loss of bidding projects.
所以本发明提供一种新的方案来解决此问题。So the present invention provides a new solution to solve this problem.
发明内容Contents of the invention
针对上述情况，为克服现有技术之缺陷，本发明之目的在于提供招标采购过程信息管理系统，具有构思巧妙、人性化设计的特性，有效地对招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内的信号自动校准，提高了信号的稳定性，防止了信号跳频和失真。In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an information management system for the bidding and purchasing process, which has the characteristics of ingenious design and humanized design, and can effectively receive data signals for the control terminal in the bidding and purchasing process information management system. The signal in the signal transmission channel is automatically calibrated, which improves the stability of the signal and prevents signal frequency hopping and distortion.
其解决的技术方案是，招标采购过程信息管理系统，包括信号输入电路、调频整流电路和滤波输出电路，所述信号输入电路接收招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内输入端的信号，运用电感L1和电容C1、电容C2组成π型滤波电路滤波，所述调频整流电路接收信号输入电路输出的信号，并运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，并且运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，最后所述滤波输出电路运用运放器AR5同相放大信号，同时运用运放器AR6和电容C5、电阻R14组成滤波电路滤波后输出，也即是输入招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内；The technical solution is that the bidding procurement process information management system includes a signal input circuit, a frequency modulation rectification circuit and a filter output circuit, and the signal input circuit receives the data signal in the signal transmission channel for the control terminal to receive the data signal in the bidding procurement process information management system. The signal at the input end is filtered by a π-type filter circuit composed of inductor L1, capacitor C1, and capacitor C2. The frequency modulation rectifier circuit receives the signal output by the signal input circuit, and uses the operational amplifier AR1 and transistor Q1~transistor Q4 to form a frequency modulation circuit to signal Frequency modulation, while using op amp AR2, op amp AR3, op amp AR4, capacitor C4, and resistor R9 to form a rectifier circuit to rectify the signal, and use transistor Q5 and transistor Q6 to feedback and adjust the output signal amplitude of the rectifier circuit. The filter output circuit uses the op amp AR5 to amplify the signal in phase, and at the same time uses the op amp AR6, capacitor C5, and resistor R14 to form a filter circuit to filter and output, that is, to input the signal transmission of the data signal received by the control terminal in the information management system of the bidding and procurement process inside the channel;
所述调频整流电路包括运放器AR1，运放器AR1的反相输入端接电阻R2的一端，电阻R2的另一端接地，运放器AR1的同相输入端接电阻R1的一端，运放器AR1的输出端接三极管Q2的基极和电阻R3的一端，电阻R1 的另一端接电阻R3的另一端和电阻R4、电阻R5的一端以及三极管Q1的集电极、三极管Q5的发射极，三极管Q2的集电极接电阻R4的另一端和三极管Q1的基极、三极管Q4的基极、三极管Q6的集电极，三极管Q2的发射极接三极管Q4的集电极和二极管D3的正极，三极管Q4的集电极接地，三极管Q4的发射极接三极管Q3的发射极和电容C3的一端，三极管Q3的集电极接电阻R5的另一端，三极管Q1的发射极接三极管Q3的基极，电容C3的另一端接运放器AR2的同相输入端，运放器AR2的反相输入端接电阻R6~电阻R8的一端和三极管Q6的基极，电阻R6的另一端接地，电阻R7的另一端接运放器AR3的同相输入端和三极管Q5的基极，运放器AR3的反相输入端接运放器AR3的输出端、三极管Q5的集电极和三极管Q6的发射极、运放器AR4的输出端以及电阻R11、电阻R9、电容C4的一端，电阻R8的另一端接运放器AR4的同相输入端和电阻R9、电容C4的另一端，运放器AR4的反相输入端接电阻R10的一端和电阻R11的另一端，电阻R10的另一端接二极管D3的负极。The frequency modulation rectifier circuit includes an operational amplifier AR1, the inverting input terminal of the operational amplifier AR1 is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, the non-inverting input terminal of the operational amplifier AR1 is connected to one end of the resistor R1, and the operational amplifier AR1 is connected to one end of the resistor R1. The output terminal of AR1 is connected to the base of transistor Q2 and one end of resistor R3, the other end of resistor R1 is connected to the other end of resistor R3, resistor R4, one end of resistor R5, the collector of transistor Q1, the emitter of transistor Q5, and the transistor Q2 The collector of the transistor is connected to the other end of the resistor R4 and the base of the transistor Q1, the base of the transistor Q4, the collector of the transistor Q6, the emitter of the transistor Q2 is connected to the collector of the transistor Q4 and the anode of the diode D3, and the collector of the transistor Q4 Grounded, the emitter of the transistor Q4 is connected to the emitter of the transistor Q3 and one end of the capacitor C3, the collector of the transistor Q3 is connected to the other end of the resistor R5, the emitter of the transistor Q1 is connected to the base of the transistor Q3, and the other end of the capacitor C3 is connected to the The non-inverting input terminal of the amplifier AR2, the inverting input terminal of the operational amplifier AR2 is connected to one end of the resistor R6~resistor R8 and the base of the transistor Q6, the other end of the resistor R6 is grounded, and the other end of the resistor R7 is connected to the terminal of the operational amplifier AR3 The non-inverting input terminal and the base of the transistor Q5, the inverting input terminal of the operational amplifier AR3 are connected to the output terminal of the operational amplifier AR3, the collector of the transistor Q5, the emitter of the transistor Q6, the output terminal of the operational amplifier AR4 and the resistor R11 , resistor R9, one end of capacitor C4, the other end of resistor R8 is connected to the non-inverting input end of operational amplifier AR4 and the other end of resistor R9 and capacitor C4, the inverting input terminal of operational amplifier AR4 is connected to one end of resistor R10 and resistor R11 The other end of the resistor R10 is connected to the cathode of the diode D3.
由于以上技术方案的采用，本发明与现有技术相比具有如下优点；Due to the adoption of the above technical solutions, the present invention has the following advantages compared with the prior art;
1，运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，运放器AR1对信号功率放大，放大信号频率，提高三极管Q1~三极管Q4调频精度，三极管Q1、三极管Q3抑制高频信号，三极管Q2、三极管Q4滤除低频信号，起到调频的效果，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，运放器AR2放大信号功率，补偿信号的导通损耗，运放器AR4和电容C4、电阻R9对信号整流，提高信号的稳定性。1. Use the operational amplifier AR1 and the transistor Q1~transistor Q4 to form a frequency modulation circuit to modulate the signal frequency. The operational amplifier AR1 amplifies the signal power, amplifies the signal frequency, and improves the frequency modulation accuracy of the transistor Q1~transistor Q4. The transistor Q1 and transistor Q3 suppress high frequency signal, triode Q2 and triode Q4 filter out low-frequency signals to achieve the effect of frequency modulation. At the same time, the op amp AR2, op amp AR3 and op amp AR4, capacitor C4, and resistor R9 are used to form a rectification circuit to rectify the signal. The amplifier AR2 amplifies the signal power and compensates the conduction loss of the signal. The operational amplifier AR4, the capacitor C4 and the resistor R9 rectify the signal to improve the stability of the signal.
2.运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，当调频整流电路输出信号为异常高电平信号时，三极管Q5导通，反馈信号至三极管Q1、三极管Q3基极电位，降低三极管Q1、三极管Q3的导通电位，当调频整流电路输出信号为异常低电平信号时，三极管Q6导通，反馈信号至三极管Q4基极电位处，提高三极管Q4导通电位，起到进一步校准信号的效果，实现了信号的对信号的自动校准，提高了信号的稳定性，防止了信号跳频和失真的状况。2. Use the feedback of transistor Q5 and transistor Q6 to adjust the output signal amplitude of the rectifier circuit. When the output signal of the frequency modulation rectifier circuit is an abnormally high level signal, the transistor Q5 is turned on, and the feedback signal is sent to the base potential of the transistor Q1 and transistor Q3 to reduce the voltage of the transistor Q1. , the conduction potential of the transistor Q3, when the output signal of the frequency modulation rectifier circuit is an abnormally low level signal, the transistor Q6 is turned on, and the feedback signal is sent to the base potential of the transistor Q4, and the conduction potential of the transistor Q4 is increased to further calibrate the signal As a result, the automatic calibration of the signal is realized, the stability of the signal is improved, and the conditions of signal frequency hopping and distortion are prevented.
附图说明Description of drawings
图1为本发明招标采购过程信息管理系统的模块图。Fig. 1 is a block diagram of the information management system of the bidding and purchasing process of the present invention.
图2为本发明招标采购过程信息管理系统的原理图。Fig. 2 is a schematic diagram of the information management system for the bidding and purchasing process of the present invention.
图3为本发明招标采购过程信息管理系统中调频整流电路的原理图。Fig. 3 is a schematic diagram of the frequency modulation rectification circuit in the information management system of the bidding and purchasing process of the present invention.
具体实施方式Detailed ways
有关本发明的前述及其他技术内容、特点与功效，在以下配合参考附图1至附图3对实施例的详细说明中，将可清楚的呈现。以下实施例中所提到的结构内容，均是以说明书附图为参考。The aforementioned and other technical contents, features and functions of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings 1 to 3 . The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.
实施例一，招标采购过程信息管理系统，包括信号输入电路、调频整流电路和滤波输出电路，所述信号输入电路接收招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内输入端的信号，运用电感L1和电容C1、电容C2组成π型滤波电路滤波，所述调频整流电路接收信号输入电路输出的信号，并运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，并且运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，最后所述滤波输出电路运用运放器AR5同相放大信号，同时运用运放器AR6和电容C5、电阻R14组成滤波电路滤波后输出，也即是输入招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内；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, the filter output circuit Use the operational amplifier AR5 to amplify the signal in phase, and at the same time use the operational amplifier AR6, capacitor C5, and resistor R14 to form a filter circuit to filter and output, that is, to input the signal transmission channel for the control terminal to receive data signals in the information management system of the bidding and procurement process;
所述调频整流电路运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，运放器AR1对信号功率放大，放大信号频率，提高三极管Q1~三极管Q4调频精度，三极管Q1、三极管Q3抑制高频信号，三极管Q2、三极管Q4滤除低频信号，起到调频的效果，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，运放器AR2放大信号功率，补偿信号的导通损耗，运放器AR4和电容C4、电阻R9对信号整流，提高信号的稳定性，并且运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，当调频整流电路输出信号为异常高电平信号时，三极管Q5导通，反馈信号至三极管Q1、三极管Q3基极电位，降低三极管Q1、三极管Q3的导通电位，当调频整流电路输出信号为异常低电平信号时，三极管Q6导通，反馈信号至三极管Q4基极电位处，提高三极管Q4导通电位，起到进一步校准信号的效果，实现了信号的对信号的自动校准，提高了信号的稳定性，防止了信号跳频和失真的状况，运放器AR1的反相输入端接电阻R2的一端，电阻R2的另一端接地，运放器AR1的同相输入端接电阻R1的一端，运放器AR1的输出端接三极管Q2的基极和电阻R3的一端，电阻R1 的另一端接电阻R3的另一端和电阻R4、电阻R5的一端以及三极管Q1的集电极、三极管Q5的发射极，三极管Q2的集电极接电阻R4的另一端和三极管Q1的基极、三极管Q4的基极、三极管Q6的集电极，三极管Q2的发射极接三极管Q4的集电极和二极管D3的正极，三极管Q4的集电极接地，三极管Q4的发射极接三极管Q3的发射极和电容C3的一端，三极管Q3的集电极接电阻R5的另一端，三极管Q1的发射极接三极管Q3的基极，电容C3的另一端接运放器AR2的同相输入端，运放器AR2的反相输入端接电阻R6~电阻R8的一端和三极管Q6的基极，电阻R6的另一端接地，电阻R7的另一端接运放器AR3的同相输入端和三极管Q5的基极，运放器AR3的反相输入端接运放器AR3的输出端、三极管Q5的集电极和三极管Q6的发射极、运放器AR4的输出端以及电阻R11、电阻R9、电容C4的一端，电阻R8的另一端接运放器AR4的同相输入端和电阻R9、电容C4的另一端，运放器AR4的反相输入端接电阻R10的一端和电阻R11的另一端，电阻R10的另一端接二极管D3的负极。The frequency modulation rectifier circuit uses the operational amplifier AR1 and the triode Q1~transistor Q4 to form a frequency modulation circuit to modulate the signal frequency, the operational amplifier AR1 amplifies the signal power, amplifies the signal frequency, and improves the frequency modulation accuracy of the triode Q1~transistor Q4, and the triode Q1 and triode Q3 Suppress high-frequency signals, triode Q2 and triode Q4 filter out low-frequency signals to achieve the effect of frequency modulation. At the same time, op-amp AR2, op-amp AR3, op-amp AR4, capacitor C4, and resistor R9 form a rectification circuit to rectify the signal. , the operational amplifier AR2 amplifies the signal power, compensates the conduction loss of the signal, the operational amplifier AR4, capacitor C4, and resistor R9 rectify the signal to improve the stability of the signal, and use the feedback of the transistor Q5 and transistor Q6 to adjust the output signal amplitude of the rectification circuit , when the output signal of the frequency modulation rectification circuit is an abnormally high level signal, the transistor Q5 is turned on, and the feedback signal is sent to the base potential of the transistor Q1 and transistor Q3, and the conduction potential of the transistor Q1 and transistor Q3 is reduced. When the output signal of the frequency modulation rectification circuit is When the signal is abnormally low level, the transistor Q6 is turned on, and the feedback signal is sent to the base potential of the transistor Q4, which increases the conduction potential of the transistor Q4 and further calibrates the signal, realizing the automatic calibration of the signal and improving the signal Stability, to prevent signal frequency hopping and distortion, the inverting input terminal of the operational amplifier AR1 is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the non-inverting input terminal of the operational amplifier AR1 is connected to one end of the resistor R1. The output terminal of the operational amplifier AR1 is connected to the base of the transistor Q2 and one end of the resistor R3, the other end of the resistor R1 is connected to the other end of the resistor R3, the resistor R4, one end of the resistor R5, the collector of the transistor Q1, and the emitter of the transistor Q5 , the collector of the transistor Q2 is connected to the other end of the resistor R4 and the base of the transistor Q1, the base of the transistor Q4, the collector of the transistor Q6, the emitter of the transistor Q2 is connected to the collector of the transistor Q4 and the anode of the diode D3, and the transistor Q4 The collector of transistor Q4 is connected to the emitter of transistor Q3 and one end of capacitor C3, the collector of transistor Q3 is connected to the other end of resistor R5, the emitter of transistor Q1 is connected to the base of transistor Q3, and the other end of capacitor C3 One end is connected to the non-inverting input terminal of the operational amplifier AR2, the inverting input terminal of the operational amplifier AR2 is connected to one end of the resistor R6~resistor R8 and the base of the transistor Q6, the other end of the resistor R6 is grounded, and the other end of the resistor R7 is connected to the operational amplifier. The non-inverting input terminal of the transistor AR3 and the base of the transistor Q5, the inverting input terminal of the operational amplifier AR3 is connected to the output terminal of the operational amplifier AR3, the collector of the transistor Q5, the emitter of the transistor Q6, and the output terminal of the operational amplifier AR4 And one end of resistor R11, resistor R9, and capacitor C4, the other end of resistor R8 is connected to the non-inverting input end of operational amplifier AR4 and the other end of resistor R9 and capacitor C4, and the inverting input terminal of operational amplifier AR4 is connected to one end of resistor R10 and the other end of the resistor R11, and the other end of the resistor R10 is connected to the cathode of the diode D3.
实施例二，在实施例一的基础上，所述滤波输出电路运用运放器AR5同相放大信号，同时运用运放器AR6和电容C5、电阻R14组成滤波电路滤波后输出，提高了信号的抗干扰性，也即是输入招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内，运放器AR5的同相输入端接运放器AR4的输出端，运放器AR5的反相输入端接电阻R12、电阻R13的一端和运放器AR5的输出端，电阻R12的另一端接地，电阻R13的另一端接电阻R14、电阻R15的一端，电阻R15的另一端接电容C5的一端和运放器AR6的同相输入端，电容C5的另一端接地，运放器AR6的反相输入端接电阻R16、电阻R17的一端，电阻R16的另一端接地，电阻R17的另一端接运放器AR6 的输出端和电阻R14的另一端以及信号输出端口。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 and The non-inverting input terminal of the operational amplifier AR6, the other end of the capacitor C5 is grounded, the inverting input terminal of the operational amplifier AR6 is connected to one end of the resistor R16 and the resistor R17, the other end of the resistor R16 is grounded, and the other end of the resistor R17 is connected to the operational amplifier The output end of AR6 and the other end of the resistor R14 and the signal output port.
实施三，在实施例一的基础上，所述信号输入电路接收招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内输入端的信号，运用电感L1和电容C1、电容C2组成π型滤波电路滤波，提高了信号的抗干扰性，电感L1的一端接稳压管D1的负极和信号输入端以及电容C1的一端，稳压管D1的正极接地，电容C1的另一端接地，电感L1的另一端接二极管D2的正极和电容C2的一端，电容C2的另一端接地，二极管D2的负极接运放器AR1的同相输入端。Implementation 3, on the basis of Embodiment 1, the signal input circuit receives the signal at the input end of the signal transmission channel for the control terminal to receive the data signal in the information management system of the bidding and procurement process, and uses the inductor L1, capacitor C1, and capacitor C2 to form a π-shaped The filter circuit filters to improve the anti-interference of the signal. One end of the inductor L1 is connected to the negative pole of the voltage regulator D1, the signal input end and one end of the capacitor C1. The positive electrode of the voltage regulator D1 is grounded, the other end of the capacitor C1 is grounded, and the inductor L1 The other end of the diode D2 is connected to the anode of the diode D2 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, and the cathode of the diode D2 is connected to the non-inverting input end of the operational amplifier AR1.
本发明具体使用时，招标采购过程信息管理系统，包括信号输入电路、调频整流电路和滤波输出电路，所述信号输入电路接收招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内输入端的信号，运用电感L1和电容C1、电容C2组成π型滤波电路滤波，所述调频整流电路运用运放器AR1和三极管Q1~三极管Q4组成调频电路对信号调频，运放器AR1对信号功率放大，放大信号频率，提高三极管Q1~三极管Q4调频精度，三极管Q1、三极管Q3抑制高频信号，三极管Q2、三极管Q4滤除低频信号，起到调频的效果，同时运用运放器AR2、运放器AR3和运放器AR4以及电容C4、电阻R9组成整流电路对信号整流处理，运放器AR2放大信号功率，补偿信号的导通损耗，运放器AR4和电容C4、电阻R9对信号整流，提高信号的稳定性，并且运用三极管Q5、三极管Q6反馈调节整流电路输出信号振幅，当调频整流电路输出信号为异常高电平信号时，三极管Q5导通，反馈信号至三极管Q1、三极管Q3基极电位，降低三极管Q1、三极管Q3的导通电位，当调频整流电路输出信号为异常低电平信号时，三极管Q6导通，反馈信号至三极管Q4基极电位处，提高三极管Q4导通电位，起到进一步校准信号的效果，实现了信号的对信号的自动校准，提高了信号的稳定性，防止了信号跳频和失真的状况，最后所述滤波输出电路运用运放器AR5同相放大信号，同时运用运放器AR6和电容C5、电阻R14组成滤波电路滤波后输出，也即是输入招标采购过程信息管理系统中控制终端接收数据信号用信号传输通道内。When the present invention is specifically used, the bidding procurement process information management system includes a signal input circuit, a frequency modulation rectification circuit and a filter output circuit, and the signal input circuit receives input from the signal transmission channel used by the control terminal to receive data signals in the bidding procurement process information management system. The signal at the terminal is filtered by using the inductance L1, the capacitor C1, and the capacitor C2 to form a π-type filter circuit. The frequency modulation rectifier circuit uses the operational amplifier AR1 and the transistor Q1~transistor Q4 to form a frequency modulation circuit to modulate the signal frequency, and the operational amplifier AR1 amplifies the signal power. , amplify the signal frequency, improve the frequency modulation accuracy of transistor Q1~transistor Q4, transistor Q1 and transistor Q3 suppress high-frequency signals, transistor Q2 and transistor Q4 filter out low-frequency signals, and achieve the effect of frequency modulation. At the same time, op amp AR2 and op amp AR3, operational amplifier AR4, capacitor C4, and resistor R9 form a rectification circuit to rectify the signal, and the operational amplifier AR2 amplifies the signal power to compensate for the conduction loss of the signal. The operational amplifier AR4, capacitor C4, and resistor R9 rectify the signal to improve The stability of the signal, and the use of transistor Q5 and transistor Q6 feedback to adjust the output signal amplitude of the rectifier circuit. When the output signal of the frequency modulation rectifier circuit is an abnormally high level signal, the transistor Q5 is turned on, and the feedback signal is sent to the base potential of the transistor Q1 and transistor Q3. , reduce the conduction potential of transistor Q1 and transistor Q3, when the output signal of the frequency modulation rectifier circuit is an abnormally low level signal, the transistor Q6 is turned on, the feedback signal is sent to the base potential of the transistor Q4, and the conduction potential of the transistor Q4 is increased to play The effect of further calibrating the signal realizes the automatic calibration of the signal to the signal, improves the stability of the signal, and prevents the situation of signal frequency hopping and distortion. Finally, the filter output circuit uses the operational amplifier AR5 to amplify the signal in phase, and simultaneously uses The operational amplifier AR6, the capacitor C5, and the resistor R14 form a filter circuit to filter and then output, that is, input into the signal transmission channel for the control terminal to receive data signals in the information management system of the bidding and procurement process.
以上所述是结合具体实施方式对本发明所作的进一步详细说明，不能认定本发明具体实施仅局限于此；对于本发明所属及相关技术领域的技术人员来说，在基于本发明技术方案思路前提下，所作的拓展以及操作方法、数据的替换，都应当落在本发明保护范围之内。The above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited thereto; , the extension made, the operation method and the replacement of data should all fall within the protection scope of the present invention.
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