CN111294305B - Bridge construction monitored control system based on thing networking - Google Patents

Bridge construction monitored control system based on thing networking Download PDF

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Publication number
CN111294305B
CN111294305B CN202010179856.5A CN202010179856A CN111294305B CN 111294305 B CN111294305 B CN 111294305B CN 202010179856 A CN202010179856 A CN 202010179856A CN 111294305 B CN111294305 B CN 111294305B
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operational amplifier
resistor
signal
signals
diode
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CN111294305A (en
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徐晨旭
王磊
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Guangdong Runyu Information Technology Co ltd
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Shandong Supermaly Power Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/18Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20Modulator circuits; Transmitter circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/02Transmitters
    • H04B1/04Circuits

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

The invention discloses a bridge construction monitoring system based on the Internet of things, which comprises a signal sampling module and a phase-shifting comparison module, wherein the signal sampling module samples node signals in the bridge construction monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the phase-shifting comparison module receives signals output by the signal sampling module in two paths, one path of signals forms a peak detection circuit by using an operational amplifier AR2, a diode D4 and a diode D5 to screen peak signals, the other path of signals forms a phase-shifting circuit by using the operational amplifier AR4, a resistor R4 and a capacitor C3 to eliminate signal spikes for signal phase shifting, the operational amplifier AR3 is used to compare the two paths of signals, finally, the operational amplifier AR6, the capacitor C1 and the capacitor C2 form a noise reduction circuit to reduce noise of the signals, the output signals of the operational amplifier AR6 are sent to a bridge construction monitoring system terminal by using a signal transmitter E1, the node signals in the bridge construction monitoring system can, and converting the correction trigger signal into a correction trigger signal of the bridge construction monitoring system terminal.

Description

Bridge construction monitored control system based on thing networking
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge construction monitoring system based on the Internet of things.
Background
The Internet of things is an important component of a new generation of information technology and is also an important development stage of an 'informatization' era, the combination of bridge construction and the Internet of things improves the management efficiency of bridge construction state data, meanwhile, bridge construction data needs to be monitored in real time according to a construction state, the data deviation in the bridge construction is avoided, but the bridge construction monitoring needs to transmit a large amount of data information in real time, the accuracy of the data must be ensured, particularly, in the middle construction period, the data signals need to ensure the real-time performance and the accuracy, however, high-frequency equipment is arranged in the bridge construction, the same bandwidth or similar bandwidth interference can occur when the bridge data is transmitted in a wireless mode, and the signal received by a bridge construction monitoring system terminal is easy to distort.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide a bridge construction monitoring system based on the internet of things, which can sample and adjust node signals in the bridge construction monitoring system and convert the node signals into correction trigger signals of a bridge construction monitoring system terminal.
The technical scheme includes that the bridge construction monitoring system based on the Internet of things comprises a signal sampling module and a phase-shifting comparison module, wherein the signal sampling module samples node signals in the bridge construction monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the phase-shifting comparison module receives signals output by the signal sampling module in two paths, one path of signals forms a peak detection circuit by using an operational amplifier AR2, a diode D4 and a diode D5 to screen peak signals, the other path of signals forms a phase-shifting circuit by using an operational amplifier AR4, a resistor R4 and a capacitor C3 to remove signal spikes, compares the two paths of signals by using an operational amplifier AR3, and finally forms a noise reduction circuit by using an operational amplifier AR6, a capacitor C1 and a capacitor C2 to reduce noise of the signals, wherein a triode Q1 is used for detecting potential differences of the output signals of the operational amplifier AR3 and the output signals of the operational amplifier AR5, the feedback signal is sent to the inverting input end of the operational amplifier AR6 to play a role in adjusting the amplitude of the output signal of the operational amplifier AR6, and the output signal of the operational amplifier AR6 is sent to the bridge construction monitoring system terminal through the signal emitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the diode D4 is used for conducting in a one-way mode to prevent a signal at the output end of the operational amplifier AR2 from flowing back, meanwhile, the operational amplifier AR2 amplifies the power, so that a peak signal screening effect is achieved, a phase-shifting circuit is formed by the two paths of signals through the operational amplifier AR4, the resistor R4 and the capacitor C3 to shift the phase of the signals to eliminate signal peaks, the capacitor C3 is used for charging and discharging, the signal output effect of the operational amplifier AR4 is achieved, under the condition that the pulse width of the signals is unchanged, the phase-shifting effect is achieved through the delay signals, meanwhile, the effect of adjusting the delay time is achieved through adjusting the resistance value of the resistor R4;
2. a noise reduction circuit consisting of an operational amplifier AR6, a capacitor C1 and a capacitor C2 is used for noise reduction adjustment of signals, distortion of the signals in the noise reduction adjustment process is prevented, signal noise is filtered through the capacitor C1 and the capacitor C2, and the noise reduction effect is achieved, wherein a triode Q1 is used for detecting the potential difference of an output signal of the operational amplifier AR3 and an output signal of the operational amplifier AR5, a feedback signal is fed into the reverse-phase input end of the operational amplifier AR6 to achieve the effect of adjusting the amplitude of the output signal of the operational amplifier AR6, the signal emitter E1 is further guaranteed not to be damaged by the peak value of the output signal, the reliability of a trigger signal is guaranteed, finally the output signal of the operational amplifier AR6 is sent into a bridge construction monitoring system terminal through the signal emitter E1.
Drawings
Fig. 1 is a phase-shifting comparison module diagram of a bridge construction monitoring system based on the internet of things.
Fig. 2 is a signal sampling module diagram of a bridge construction monitoring system based on the internet of things.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The embodiment I provides a bridge construction monitoring system based on the Internet of things, which comprises a signal sampling module and a phase-shifting comparison module, wherein the signal sampling module samples a node signal in the bridge construction monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the phase-shifting comparison module receives output signals of the signal sampling module in two paths, one path of the signal uses an operational amplifier AR2, a diode D4 and a diode D5 to form a peak detection circuit to screen peak signals, the two paths of the signal uses an operational amplifier AR4, a resistor R4 and a capacitor C3 to form a phase-shifting circuit to remove signal spikes for phase shifting, the operational amplifier AR3 is used to compare the two paths of the signal, finally, an operational amplifier AR6, a capacitor C1 and a capacitor C2 are used to form a noise reduction circuit to reduce noise of the signal, wherein a triode Q1 is used to detect output signals of the operational amplifier AR3 and output signal potential difference of the operational amplifier AR5, the signals, the amplitude of the output signal of the operational amplifier AR6 is adjusted, and the output signal of the operational amplifier AR6 is sent to a bridge construction monitoring system terminal through a signal emitter E1;
the phase-shifting comparison module receives signals output by the signal sampling module in two paths, one path of signals forms a peak detection circuit by using an operational amplifier AR2, a diode D4 and a diode D5 to screen peak signals, the output end of the operational amplifier AR2 is prevented from signal backflow by using unidirectional conduction of a diode D4, and the power of the operational amplifier AR2 is amplified simultaneously, so that the peak signals are screened, the two paths of signals form a phase-shifting circuit by using the operational amplifier AR4, a resistor R4 and a capacitor C3 to remove signal peaks by phase shifting signals, the capacitor C3 is charged and discharged to play a role of delaying the output signals of the operational amplifier AR4, the phase-shifting function is played by delaying the signals under the condition that the pulse width of the signals is unchanged, the delay time is adjusted by adjusting the resistance value of the resistor R4, namely, the phase-shifting effect is adjusted, on the basis of two-path calibration, the operational amplifier AR3 is used for comparing, then, a noise reduction circuit consisting of an operational amplifier AR6, a capacitor C1 and a capacitor C2 is used for carrying out noise reduction adjustment on the signal, distortion of the signal in the noise reduction adjustment process is prevented, signal clutter is filtered through a capacitor C1 and a capacitor C2, and the noise reduction effect is achieved, wherein a triode Q1 is used for detecting the output signal of the operational amplifier AR3 and the output signal potential difference of the operational amplifier AR5, the signal is fed back to the inverting input end of the operational amplifier AR6 to achieve the effect of adjusting the amplitude of the output signal of the operational amplifier AR6, the signal emitter E1 is further guaranteed not to be damaged by the peak value of the output signal, the reliability of the trigger signal is guaranteed, and finally the output signal of the operational amplifier AR6 is sent to a bridge construction monitoring;
the phase-shifting comparison module has a specific structure that a non-inverting input terminal of an operational amplifier AR2 is connected with an anode of a diode D4 and a cathode of a diode D2, an inverting input terminal of an operational amplifier AR2 is connected with one end of a resistor R3, the other end of a resistor R3 is grounded, an output terminal of an operational amplifier AR2 is connected with a cathode of a diode D4 and an anode of a diode D5, a cathode of a diode D5 is connected with a non-inverting input terminal of an operational amplifier AR3, an anode of a diode D2 is connected with an anode of a diode D3, a cathode of the diode D3 is connected with one end of a resistor R3 and one end of a resistor R3, the other end of the resistor R3 is connected with a non-inverting input terminal of the operational amplifier AR3 and one end of a capacitor C3, the other end of the inverting input terminal of the operational amplifier AR3 is connected with the non-inverting input terminal of the resistor R3, and the inverting input terminal of the operational amplifier AR3 is connected with the inverting input terminal of the non-inverting input terminal of the operational amplifier, the inverting input end of the operational amplifier AR5 is connected with one end of a resistor R8, the output end of the operational amplifier AR5 is connected with the other end of a resistor R8 and the base of a triode Q1, the emitter of a triode Q1 is connected with one end of a resistor R9, a resistor R12 and a resistor R13 and the inverting input end of an operational amplifier AR6, the other end of a resistor R9 is grounded, the collector of a triode Q1 is connected with the output end of the operational amplifier AR6 and the other end of a resistor R13, one end of a resistor R14 and one end of a capacitor C1, the other end of a capacitor C1 is connected with one end of a resistor R10 and one end of a resistor R11, the other end of a resistor R11 is connected with the output end of an operational amplifier AR 11, the other end of the resistor R11 is connected with one end of a capacitor C11 and the non-inverting input end of the operational.
In the second embodiment, on the basis of the first embodiment, the signal sampling module selects a signal sampler J1 with a model of DAM-3056AH to sample node signals in the bridge construction monitoring system, a power supply end of the signal sampler J1 is connected with +5V, a ground end of the signal sampler J1 is grounded, an output end of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and a non-inverting input end of an operational amplifier AR1, an anode of the voltage regulator tube D1 is grounded, an inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a resistor R2, the other end of the resistor R1 is grounded, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and an anode of a diode D2.
The invention particularly relates to a bridge construction monitoring system based on the Internet of things, which comprises a signal sampling module and a phase-shifting comparison module, wherein the signal sampling module samples node signals in the bridge construction monitoring system by using a signal sampler J1 with the model of DAM-3056AH, one path of signals of the phase-shifting comparison module use an operational amplifier AR2, a diode D4 and a diode D5 to form a peak detection circuit to screen peak signals, the diode D4 is used for conducting in a single direction to prevent the signal at the output end of the operational amplifier AR2 from flowing back, meanwhile, the operational amplifier AR2 amplifies the power so as to play a role in screening the peak signals, the other path of signals use a phase-shifting circuit formed by the operational amplifier AR4, a resistor R4 and a capacitor C3 to remove signal peaks by phase shifting the signals, the capacitor C3 is used for charging and discharging, the role in delaying the output signals of the operational amplifier AR4 is played by delaying the signals, and, meanwhile, the delay time is adjusted by adjusting the resistance value of the resistor R4, namely the phase-shifting phase is adjusted, on the basis of two-path calibration, the operational amplifier AR3 is used for comparing two-path signals, stabilizing the static working point of the signals, then, the operational amplifier AR6, the capacitor C1 and the capacitor C2 are used to form a noise reduction circuit to perform noise reduction adjustment on the signal, so as to prevent the signal from generating distortion in the noise reduction adjustment process, filter out signal noise waves through the capacitor C1 and the capacitor C2 to play a role in noise reduction, the triode Q1 is used for detecting the potential difference between the output signal of the operational amplifier AR3 and the output signal of the operational amplifier AR5, a feedback signal is fed into the inverting input end of the operational amplifier AR6 to play a role in adjusting the amplitude of the output signal of the operational amplifier AR6, the peak value of the output signal is further ensured not to damage the signal transmitter E1, the reliability of a trigger signal is ensured, and finally the output signal of the operational amplifier AR6 is sent into a bridge construction monitoring system terminal through the signal transmitter E1.
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 (1)

1. A bridge construction monitoring system based on the Internet of things comprises a signal sampling module and a phase-shifting comparison module, and is characterized in that the signal sampling module samples node signals in the bridge construction monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the phase-shifting comparison module receives output signals of the signal sampling module in two paths, one path of signals forms a peak detection circuit by using an operational amplifier AR2, a diode D4 and a diode D5 to screen peak signals, the two paths of signals form a phase-shifting circuit by using an operational amplifier AR4, a resistor R4 and a capacitor C3 to remove signal spikes for phase shifting, the operational amplifier AR3 is used to compare the two paths of signals, finally, a noise reduction circuit is formed by using an operational amplifier AR6, a capacitor C1 and a capacitor C2 to reduce noise of the signals, wherein a triode Q1 is used to detect output signals of the operational amplifier AR3 and output signal potential difference of the operational amplifier AR5, and feed back signals to an inverse input, the amplitude of the output signal of the operational amplifier AR6 is adjusted, and the output signal of the operational amplifier AR6 is sent to a bridge construction monitoring system terminal through a signal emitter E1;
the phase-shift comparison module comprises an operational amplifier AR2, wherein a non-inverting input terminal of the operational amplifier AR2 is connected with an anode of a diode D4 and a cathode of a diode D2, an inverting input terminal of the operational amplifier AR2 is connected with one end of a resistor R3, the other end of the resistor R3 is grounded, an output terminal of the operational amplifier AR2 is connected with a cathode of a diode D4 and an anode of a diode D5, a cathode of the diode D5 is connected with a non-inverting input terminal of the operational amplifier AR5, an anode of the diode D5 is connected with an anode of the diode D5, a cathode of the diode D5 is connected with one end of a resistor R5 and a resistor R5, the other end of the resistor R5 is connected with a non-inverting input terminal of the operational amplifier AR5 and one end of a capacitor C5, the other end of the capacitor C5 is grounded, an inverting input terminal of the anti-inverting input terminal of the operational amplifier AR5 is connected with one end of the resistor R5, an inverting input terminal of the operational amplifier AR5, the inverting input end of the operational amplifier AR5 is connected with one end of a resistor R8, the output end of the operational amplifier AR5 is connected with the other end of a resistor R8 and the base of a triode Q1, the emitter of a triode Q1 is connected with one end of a resistor R9, a resistor R12 and a resistor R13 and the inverting input end of an operational amplifier AR6, the other end of a resistor R9 is grounded, the collector of a triode Q1 is connected with the output end of an operational amplifier AR6 and the other end of a resistor R13, one end of a resistor R14 and one end of a capacitor C1, the other end of a capacitor C1 is connected with one end of a resistor R10 and one end of a resistor R11, the other end of a resistor R11 is connected with the output end of an operational amplifier AR 11, the other end of the resistor R11 is connected with one end of a capacitor C11 and the non-inverting input end of the operational;
the signal sampling module comprises a DAM-3056AH signal sampler J1, a power supply end of a signal sampler J1 is connected with +5V, a grounding end of a signal sampler J1 is grounded, an output end of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and a non-inverting input end of an operational amplifier AR1, a positive electrode of a voltage regulator tube D1 is grounded, an inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a resistor R2, the other end of the resistor R1 is grounded, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and the positive electrode of a diode D2.
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Denomination of invention: A Bridge Construction Monitoring System Based on the Internet of Things

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