CN109391286B - Bidding purchasing process information management system - Google Patents
Bidding purchasing process information management system Download PDFInfo
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- CN109391286B CN109391286B CN201811453450.0A CN201811453450A CN109391286B CN 109391286 B CN109391286 B CN 109391286B CN 201811453450 A CN201811453450 A CN 201811453450A CN 109391286 B CN109391286 B CN 109391286B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/02—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of RC networks, e.g. integrated networks
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Networks Using Active Elements (AREA)
Abstract
The invention discloses an information management system for a bid procurement process, which comprises a signal input circuit, a frequency modulation rectifying circuit and a filtering output circuit, wherein the signal input circuit receives a signal at an input end in a signal transmission channel for receiving a data signal by a control terminal in the information management system for the bid procurement process, the frequency modulation rectifying circuit receives the signal output by the signal input circuit, a frequency modulation circuit is formed by an operational amplifier AR1 and a triode Q1 ~ and a triode Q4 to modulate the frequency of the signal, a rectifying circuit is formed by the operational amplifier AR2, the operational amplifier AR3, the operational amplifier AR4, a capacitor C4 and a resistor R9 to rectify the signal, the triode Q5 and the triode Q6 are used to feed back and adjust the amplitude of the signal output by the rectifying circuit, finally, the filtering output circuit is formed by the operational amplifier AR5 to amplify the signal in phase, and a filtering circuit is formed by the operational amplifier AR6, the capacitor C5 and the resistor R14 to filter the output, so that the automatic calibration of the.
Description
Technical Field
The invention relates to the technical field of information management systems, in particular to an information management system for a bid inviting purchase process.
Background
In the 21 st century, the information of the bidding purchasing process is processed in an informationized way, the information management system of the bidding purchasing process replaces the traditional manual or simple computer information processing method, the unified and intelligent processing of the information of the bidding purchasing process is realized, the safety and the confidentiality of the information and the processing efficiency of the data are improved, however, in practice, as the information data of the bidding purchasing process is more and more complicated, the data signals received by a control terminal in the information management system of the bidding purchasing process are more and more complicated, the frequency hopping and even the distortion phenomenon of the data signals received by the control terminal in the information management system of the bidding purchasing process can often occur, the disorder of the information management system of the bidding purchasing process is caused, and the whole bidding purchasing process is caused with serious errors, and even loss of bidding items.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, and in order to overcome the defects of the prior art, the present invention aims to provide an information management system for a bid procurement process, which has the characteristics of ingenious conception and humanized design, and effectively and automatically calibrates signals in a signal transmission channel for receiving data signals by a control terminal in the information management system for the bid procurement process, thereby improving the stability of the signals and preventing the frequency hopping and distortion of the signals.
The technical scheme includes that the bidding purchasing process information management system comprises a signal input circuit, a frequency modulation rectifying circuit and a filtering output circuit, wherein the signal input circuit receives signals of an input end in a signal transmission channel for receiving data signals by a control terminal in the bidding purchasing process information management system, a pi-type filtering circuit is formed by an inductor L1, a capacitor C1 and a capacitor C2 for filtering, the frequency modulation rectifying circuit receives the signals output by the signal input circuit, a frequency modulation circuit is formed by an operational amplifier AR1 and a triode Q1 ~ and a triode Q4 for modulating the frequency of the signals, a rectifying circuit is formed by an operational amplifier AR2, an operational amplifier AR3, an operational amplifier AR4, a capacitor C4 and a resistor R9 for rectifying the signals, the triode Q5 and the triode Q6 are used for feedback adjustment of the amplitude of the signals output by the rectifying circuit, finally the filtering output circuit amplifies the signals by an operational amplifier AR5, a filter circuit is formed by an operational amplifier AR6, a capacitor C5 and a resistor R14 for outputting the filtered signals, and the signals are formed by a control channel for receiving the signals in the bidding purchasing process information management;
the frequency modulation rectifying circuit comprises an operational amplifier AR, the inverting input end of the operational amplifier AR is connected with one end of a resistor R, the other end of the resistor R is grounded, the non-inverting input end of the operational amplifier AR is connected with one end of the resistor R, the non-inverting input end of the operational amplifier AR is connected with one end of a resistor R, the other end of the resistor R is grounded, the non-inverting input end of the operational amplifier AR is connected with one end of the resistor R, the output end of the operational amplifier AR is connected with the base of a triode Q and one end of the resistor R, the other end of the resistor R is connected with the collector of the triode Q, the emitter of the triode Q is connected with the other end of the resistor R and the base of the triode Q, the base of the triode Q and the collector of a diode D, the collector of the triode Q is grounded, the emitter of the triode Q is connected with the emitter of the triode Q and one end of a capacitor C, the collector of the triode Q is connected with the other end of the resistor R and one end of the capacitor C, the emitter of the transistor Q is connected with the non-inverting input end of the operational amplifier AR, the non-inverting input end of the operational amplifier AR and the non-inverting input end of the operational amplifier AR, the resistor R and the collector of the resistor R are connected with the base of the non-inverting input end of the operational amplifier, the emitter of the resistor R, the resistor R and the emitter of the resistor R, the resistor R.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1, a frequency modulation circuit is formed by an operational amplifier AR1 and a triode Q1 ~ and a triode Q4 to modulate frequency of signals, the operational amplifier AR1 amplifies power of the signals, amplifies frequency of the signals, and improves frequency modulation precision of the triode Q1 ~ and the triode Q4, the triode Q1 and the triode Q3 inhibit high-frequency signals, the triode Q2 and the triode Q4 filter low-frequency signals to achieve the frequency modulation effect, meanwhile, a rectifying circuit is formed by the operational amplifier AR2, the operational amplifier AR3, the operational amplifier AR4, a capacitor C4 and a resistor R9 to rectify the signals, the operational amplifier AR2 amplifies power of the signals, conduction loss of the compensation signals, the operational amplifier AR4, the capacitor C4 and the resistor R9 rectify the signals to improve stability of the signals.
2. The triode Q5 and the triode Q6 are used for feeding back and adjusting the amplitude of the output signal of the rectifying circuit, when the output signal of the frequency modulation rectifying circuit is an abnormal high-level signal, the triode Q5 is conducted, a feedback signal is sent to the triode Q1 and the base potential of the triode Q3, the conduction potential of the triode Q1 and the conduction potential of the triode Q3 are reduced, when the output signal of the frequency modulation rectifying circuit is an abnormal low-level signal, the triode Q6 is conducted, the feedback signal is sent to the base potential of the triode Q4, the conduction potential of the triode Q4 is improved, the effect of further signal calibration is achieved, automatic signal frequency hopping calibration is achieved, the signal stability is improved, and the conditions of signal and distortion are prevented.
Drawings
Fig. 1 is a block diagram of an information management system for a tender procurement process according to the present invention.
Fig. 2 is a schematic diagram of the tender procurement process information management system of the invention.
FIG. 3 is a schematic diagram of a frequency modulation rectification circuit in the bid procurement process information management system of the invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The first embodiment, the information management system of the bid procurement process includes a signal input circuit, a frequency modulation rectification circuit and a filter output circuit, wherein the signal input circuit receives a signal at an input end in a signal transmission channel for receiving a data signal by a control terminal in the information management system of the bid procurement process, a pi-type filter circuit is formed by an inductor L1, a capacitor C1 and a capacitor C2 for filtering, the frequency modulation rectification circuit receives the signal output by the signal input circuit, a frequency modulation circuit is formed by an operational amplifier AR1 and a triode Q1 ~ triode Q4 for frequency modulation of the signal, a rectification circuit is formed by an operational amplifier AR2, an operational amplifier AR3, an operational amplifier AR4, a capacitor C4 and a resistor R9 for rectification of the signal, a triode Q5 and a triode Q6 are used for feedback adjustment of the amplitude of the signal output by the rectification circuit, finally, the filter output circuit uses an operational amplifier AR5 for in-phase amplification of the signal, a filter circuit is formed by an operational amplifier AR6, a capacitor C5 and a resistor R14 for filtering and outputting, and the signal is received by the;
the frequency modulation rectifying circuit utilizes an operational amplifier AR1 and a transistor Q1 ~, a transistor Q4 is connected with a frequency modulation circuit for modulating the frequency of a signal, an operational amplifier AR1 is used for amplifying the signal power, the frequency modulation precision of a transistor Q4 of the transistor Q1 ~ is improved, a transistor Q1 and a transistor Q3 are used for suppressing a high-frequency signal, a transistor Q2 and a transistor Q4 are used for filtering a low-frequency signal, the frequency modulation effect is achieved, an operational amplifier AR2, an operational amplifier AR3, an operational amplifier AR4, a capacitor C4 and a resistor R4 are used for rectifying the signal, the operational amplifier AR4 is used for amplifying the signal power, the conduction loss of the signal is compensated, the operational amplifier AR4 and the capacitor C4 are used for rectifying the signal, the stability of the signal is improved, the amplitude of the signal is adjusted by utilizing the transistors Q4 and Q4, the feedback of the same-phase resistor R4, the collector of the AR is connected with the emitter of the transistor R72, the emitter of the transistor R72, the emitter of the transistor R4, the emitter of the transistor R36Q 4, the emitter of the transistor R36Q 4, the emitter of the transistor R36Q 4 is connected with the emitter of the transistor R36Q, the emitter of the.
In the second embodiment, on the basis of the first embodiment, the filter output circuit amplifies a signal in phase by using the operational amplifier AR5, and outputs the signal after filtering by using the operational amplifier AR6, the capacitor C5 and the resistor R14, so that the anti-interference performance of the signal is improved, that is, in a signal transmission channel for receiving a data signal by a control terminal in an information management system of a bidding purchase process, the in-phase input terminal of the operational amplifier AR5 is connected to the output terminal of the operational amplifier AR4, the anti-phase input terminal of the operational amplifier AR5 is connected to one end of the resistor R12, one end of the resistor R13 and the output terminal of the operational amplifier AR5, the other end of the resistor R12 is grounded, the other end of the resistor R13 is connected to one end of the resistor R14 and the resistor R15, the other end of the resistor R15 is connected to one end of the capacitor C42 and the in-phase input terminal of the operational amplifier AR6, the other end of the capacitor C5 is grounded, the other end of the capacitor C, the other end of the resistor R17 is connected to the output terminal of the amplifier AR6, the other end of the resistor R14, and the signal output port.
Third, on the basis of the first embodiment, the signal input circuit receives a signal of an input end in a signal transmission channel for a data signal received by a control terminal in the bidding procurement process information management system, and a pi-type filter circuit consisting of an inductor L1, a capacitor C1 and a capacitor C2 is used for filtering, so that the anti-interference performance of the signal is improved, one end of the inductor L1 is connected with the cathode of a voltage regulator tube D1, the signal input end and one end of a capacitor C1, the anode of the voltage regulator tube D1 is grounded, the other end of the capacitor C1 is grounded, the other end of the inductor L1 is connected with the anode of a 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 with the non-phase.
When the system is used, the system comprises a signal input circuit, a frequency modulation rectification circuit and a filter output circuit, wherein the signal input circuit receives a signal at an input end in a signal transmission channel for receiving a data signal by a control terminal in the system, the signal input circuit uses an inductor L, a capacitor C and a capacitor C to form a pi-type filter circuit for filtering, the frequency modulation rectification circuit uses an operational amplifier AR and a triode Q to form a frequency modulation circuit for modulating the frequency of the signal, the operational amplifier AR amplifies the signal power, amplifies the signal frequency and improves the frequency modulation precision of the triode Q, the triode Q and the triode Q suppress high-frequency signals, the triode Q and the triode Q filter out low-frequency signals to achieve the effect of frequency modulation purchase, the operational amplifier AR and the operational amplifier are used for rectifying the signal, the operational amplifier AR amplifies the signal power, namely the conduction loss of a compensation signal, the operational amplifier AR, the capacitor C and the resistor R rectify the signal, the stability of the signal is improved, the triode Q feeds back to adjust the amplitude of the output signal, when the output signal is abnormal level of the operational amplifier AR, the filter circuit, the signal is conducted, the resistor R is conducted to the transistor Q, the base of the amplifier circuit, the triode Q, the transistor Q is connected, the transistor Q is connected with the base of the transistor Q, the transistor Q is connected with the transistor Q, the transistor Q is connected with the transistor Q, the transistor Q.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. The bidding purchasing process information management system comprises a signal input circuit, a frequency modulation rectifying circuit and a filtering output circuit, and is characterized in that the signal input circuit receives signals at the input end in a signal transmission channel, the signal transmission channel is a signal channel for receiving data signals by a control terminal in the bidding purchasing process information management system, a pi-type filtering circuit is formed by an inductor L1, a capacitor C1 and a capacitor C2 for filtering, the frequency modulation rectifying circuit receives signals output by the signal input circuit, a frequency modulation circuit is formed by an operational amplifier AR1 and a triode Q1 ~ triode Q4 for frequency modulation of signals, a rectifying circuit is formed by an operational amplifier AR2, an operational amplifier AR3, an operational amplifier AR4, a capacitor C4 and a resistor R9 for rectification processing of the signals, a triode Q5 and a triode Q6 are used for feedback adjustment of the amplitude of signals output by the rectifying circuit, finally, the operational amplifier AR5 is used for amplifying the signals in phase, an operational amplifier AR6, a capacitor C5 and a resistor R14 are used for filtering and outputting the filtered signals after being input into the signal transmission channel, and the signal transmission channel is a control signal receiving data channel in the bidding purchasing process information management system;
the frequency modulation rectifying circuit comprises an operational amplifier AR, the inverting input end of the operational amplifier AR is connected with one end of a resistor R, the other end of the resistor R is grounded, the non-inverting input end of the operational amplifier AR is connected with one end of the resistor R, the non-inverting input end of the operational amplifier AR is connected with one end of a resistor R, the other end of the resistor R is grounded, the non-inverting input end of the operational amplifier AR is connected with one end of the resistor R, the output end of the operational amplifier AR is connected with the base of a triode Q and one end of the resistor R, the other end of the resistor R is connected with the collector of the triode Q, the emitter of the triode Q is connected with the other end of the resistor R and the base of the triode Q, the base of the triode Q and the collector of a diode D, the collector of the triode Q is grounded, the emitter of the triode Q is connected with the emitter of the triode Q and one end of a capacitor C, the collector of the triode Q is connected with the other end of the resistor R and one end of the capacitor C, the emitter of the transistor Q is connected with the non-inverting input end of the operational amplifier AR, the non-inverting input end of the operational amplifier AR and the non-inverting input end of the operational amplifier AR, the resistor R and the collector of the resistor R are connected with the base of the non-inverting input end of the operational amplifier, the emitter of the resistor R, the resistor R and the emitter of the resistor R, the resistor R.
2. The system for managing the information on the tender purchasing process according to claim 1, wherein the filtering output circuit comprises an operational amplifier AR5, the non-inverting input terminal of the operational amplifier AR5 is connected with the output terminal of the operational amplifier AR4, the inverting input terminal of the operational amplifier AR5 is connected with one end of a resistor R12, one end of a resistor R13 and the output terminal of the operational amplifier AR5, the other end of a resistor R12 is grounded, the other end of the resistor R68692 is connected with one end of a resistor R8 and one end of a resistor R15, the other end of a resistor R15 is connected with one end of a capacitor C5 and the non-inverting input terminal of the operational amplifier AR6, the other end of a capacitor C5 is grounded, the inverting input terminal of the operational amplifier AR6 is connected with one end of a resistor R16 and a resistor R17, the other end of the resistor R16 is grounded, and the other end of the resistor R17.
3. The bid procurement process information management system of claim 1 characterized by, the signal input circuit includes inductance L1, one end of inductance L1 connects negative pole and signal input terminal of stabilivolt D1 and one end of electric capacity C1, the positive pole of stabilivolt D1 is grounded, the other end of electric capacity C1 is grounded, the other end of inductance L1 connects positive pole of diode D2 and one end of electric capacity C2, the other end of electric capacity C2 is grounded, the negative pole of diode D2 connects the non-inverting input terminal of amplifier AR 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811453450.0A CN109391286B (en) | 2018-11-30 | 2018-11-30 | Bidding purchasing process information management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811453450.0A CN109391286B (en) | 2018-11-30 | 2018-11-30 | Bidding purchasing process information management system |
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| CN109391286A CN109391286A (en) | 2019-02-26 |
| CN109391286B true CN109391286B (en) | 2019-12-20 |
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| CN201811453450.0A Active CN109391286B (en) | 2018-11-30 | 2018-11-30 | Bidding purchasing process information management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110946572B (en) * | 2019-12-18 | 2022-04-15 | 郑州轻工业大学 | Wireless Electrocardiogram (ECG) acquisition monitoring device |
| CN111953433B (en) * | 2020-08-31 | 2021-06-08 | 郑州铁路职业技术学院 | Railway interlocking signal management system |
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| CN101867365A (en) * | 2010-04-28 | 2010-10-20 | 广州金升阳科技有限公司 | Circuit for converting direct-current positive and negative bipolar signal into unipolar signal through isolation |
| CN103747575A (en) * | 2013-12-27 | 2014-04-23 | 苏州市启扬商贸有限公司 | A human-body-induced table lamp |
| CN108615349A (en) * | 2018-07-27 | 2018-10-02 | 黄河科技学院 | Agricultural greenhouse data transmission system based on internet of things |
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| CN101345487B (en) * | 2008-05-21 | 2014-03-12 | 英飞特电子（杭州）股份有限公司 | Primary sampling current controlled synchronous commutation driving circuit |
| CN105006974B (en) * | 2015-07-30 | 2018-03-02 | 广州金升阳科技有限公司 | synchronous rectification control method, control device and switching power supply |
| CN207603457U (en) * | 2017-12-01 | 2018-07-10 | 安徽电气工程职业技术学院 | A kind of DSP power circuits applied to electric control system |
| CN207559970U (en) * | 2017-12-20 | 2018-06-29 | 爱上门（江苏）信息科技有限公司 | Data acquire intelligent universal system |
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|---|---|---|---|---|
| CN101867365A (en) * | 2010-04-28 | 2010-10-20 | 广州金升阳科技有限公司 | Circuit for converting direct-current positive and negative bipolar signal into unipolar signal through isolation |
| CN103747575A (en) * | 2013-12-27 | 2014-04-23 | 苏州市启扬商贸有限公司 | A human-body-induced table lamp |
| CN108615349A (en) * | 2018-07-27 | 2018-10-02 | 黄河科技学院 | Agricultural greenhouse data transmission system based on internet of things |
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