CN111653077A - Building construction information monitoring system based on Internet of things - Google Patents
Building construction information monitoring system based on Internet of things Download PDFInfo
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- CN111653077A CN111653077A CN202010467138.8A CN202010467138A CN111653077A CN 111653077 A CN111653077 A CN 111653077A CN 202010467138 A CN202010467138 A CN 202010467138A CN 111653077 A CN111653077 A CN 111653077A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
- G08C25/02—Arrangements for preventing or correcting errors; Monitoring arrangements by signalling back receiving station to transmitting station
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
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Abstract
The invention discloses a building construction information monitoring system based on the Internet of things, which comprises a signal sampling module and a separation calibration module, wherein the signal sampling module samples an output signal of a signal acquisition device in the building construction information monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module receives the output signal of the signal sampling module, the separation calibration module detects an abnormal signal by using a triode Q2, a triode Q3 and a capacitor C5, detects an abnormal high-level signal in the signal by using the cut-off voltage of the triode Q2 and a triode Q3, designs a diode D7 detection signal in one path, feeds back the signal to the reverse phase input end of an operational amplifier AR3, the operational amplifier AR3 adjusts the two paths of output signals to the reverse phase input end of the operational amplifier AR4 by using the feedback signal of a diode D7, and ensures the accuracy of the signal received by a building construction information monitoring system terminal, and receiving signals by the building construction information monitoring system terminal and responding in time.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to a building construction information 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, building construction and the internet of things are combined, building construction state data management efficiency is improved, meanwhile, building construction data need to be monitored in real time according to a construction state, data deviation in building construction is avoided, however, monitoring of building construction needs to transmit a large amount of data information in real time, data accuracy must be guaranteed, particularly in the middle construction period, data signals need to guarantee real-time performance and accuracy, data accuracy and safety are guaranteed, however, same bandwidth or similar bandwidth interference can occur when building construction information is transmitted in a wireless mode, and signals received by a building construction information management system terminal are easily lost.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a building construction information monitoring system based on the internet of things, which can sample and adjust the output signal of the signal acquisition device in the building construction information management system, and convert the sampled and adjusted output signal into a correction trigger signal of the building construction information monitoring system terminal.
The technical scheme includes that the building construction information monitoring system based on the Internet of things comprises a signal sampling module and a separation calibration module, wherein the signal sampling module samples signals output by signal acquisition equipment in the building construction information monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module receives the signals output by the signal sampling module, and the signals output by the separation calibration module are sent to a building construction information monitoring system terminal through a signal transmitter E1;
the separation calibration module comprises a variable resistor RW, one end of the variable resistor RW is connected with the anode of a diode D and one end of a capacitor C, the other end of the variable resistor RW is connected with the cathode of the diode D, one end of the capacitor C, the anode of the diode D is connected with the capacitor C, the other end of the capacitor C, the cathode of the diode D, the resistor R, one end of the capacitor C and the output port of the signal sampling module, the other end of the resistor R is connected with the anode of the diode D, the cathode of the diode D is connected with the base of a triode Q and the collector of the triode Q, the emitter of the triode Q is connected with the other end of the resistor R, the sliding end of the variable resistor RW is connected with one end of an inductor L and one end of the capacitor C, the other end of the inductor L is connected with the other end of the capacitor C and the other end of the resistor R, One end of a capacitor C3, the other end of the resistor R8 is connected with the control electrode of the diode D7 and the other end of the capacitor C3, the non-inverting input end of an operational amplifier AR2, the anode of the diode D7 is connected with the other end of the resistor R7, the cathode of the diode D7 is connected with the inverting input end of the operational amplifier AR 7, the inverting input end of the operational amplifier AR 7 is connected with one end of the resistor R7, the output end of the operational amplifier AR 7 is connected with the non-inverting input end of the operational amplifier AR 7, the non-inverting input end of the operational amplifier AR 7 and the other end of the resistor R7, the other end of the resistor R7 is connected with one end of the resistor R7, the cathode of the resistor R7 and the anode of the voltage regulator D7, the control electrode of the diode D7, the anode of the diode D7 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the power supply +3.3V, the cathode of the resistor R7 is connected with the non-inverting input end of the resistor R7, the inverting input end of the operational amplifier AR, the output end of the op amp AR4 is connected to the signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the signal is rectified by using the diode D3, the diode D4 and the variable resistor RW1, the capacitor C1 and the capacitor C1 play a decoupling role, the signal is rectified by using the unidirectional conductivity of the diode D3 and the diode D4, when the signal is positive, the diode D3 is conducted, otherwise, the diode D4 is conducted, then voltage is divided by the variable resistor RW1 to realize the rectifying role, the frequency can be modulated only after the signal waveform is rectified, the frequency modulation circuit consisting of the inductor L2, the capacitor C3 and the capacitor C4 is used for stabilizing the signal frequency, the inductor L2 filters high-frequency signal interference, and the capacitor C4 and the capacitor C3 filter low-frequency signal interference, so that the high-frequency signal frequency rectifying circuit has a great practical value;
2. detecting abnormal signals by using a triode Q2, a triode Q3 and a capacitor C5, detecting abnormal high level signals in cut-off voltage detection signals of a triode Q2 and a triode Q3, dividing and extracting the output signals of a signal sampling module by using a resistor R3 and a resistor R4, conducting the triode Q2 and the triode Q3 if the signals are abnormal high level signals, and not conducting the signals if the signals are normal signals, wherein the capacitor C5 plays a filtering role, a voltage stabilizing tube ensures the base electrode of the triode Q3 to be stable, namely the voltage of the capacitor C5 is stabilized, finally, the two signals are input into an operational amplifier AR4 and an operational amplifier AR5 non-inverting input end together, in order to further ensure the accuracy of the two signals, one circuit is designed with a diode D7 detection signal, the feedback signal is input into the inverting input end of the operational amplifier AR3, the operational amplifier AR3 adjusts the two output signals to the inverting input end of the operational amplifier AR 42 by using the feedback signal of the diode D7, and the two circuits are designed with the same 39 6, the function of calibrating the signal potential of the in-phase input end of the operational amplifier AR4 is achieved, the accuracy of receiving signals by the building construction information monitoring system terminal is ensured, and the received signals by the building construction information monitoring system terminal respond in time.
Drawings
Fig. 1 is a module schematic diagram of a building construction information monitoring system based on the internet of things.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities 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. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The building construction information monitoring system based on the Internet of things comprises a signal sampling module and a separation calibration module, wherein the signal sampling module samples signals output by signal acquisition equipment in the building construction information monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module receives the signals output by the signal sampling module, and the signals output by the separation calibration module are sent to a terminal of the building construction information monitoring system through a signal transmitter E1;
the separation calibration module divides the signal output by the signal sampling module into two paths, one path is a main signal, a diode D3, a diode D4 and a variable resistor RW1 are used for rectifying the signal, a capacitor C1 and a capacitor C1 play a decoupling role, the signal is rectified by utilizing the unidirectional conductivity of a diode D3 and a diode D4, when the signal is positive, the diode D3 is conducted, otherwise, the diode D4 is conducted, voltage is divided by the variable resistor RW1 to realize the rectifying role, frequency modulation can be carried out only after signal waveform rectification is ensured, a frequency modulation circuit is formed by an inductor L2, the capacitor C3 and the capacitor C4 to stabilize the signal frequency, the inductor L2 filters high-frequency signal interference, the capacitor C4 and the capacitor C3 filter low-frequency signal interference, an operational amplifier AR2 is used for buffering the signal, the normal signal distortion caused by direct comparison is prevented, the two paths are secondary signals, namely a detection loop, firstly, a triode Q2, a triode Q3 and a capacitor C5 are used for detecting abnormal signals, a resistor R3 and a resistor R4 are used for dividing and extracting the output signals of a signal sampling module, if the signals are abnormal high level signals, a triode Q2 and a triode Q3 are conducted, otherwise, the signals are not conducted, the capacitor C5 plays a role in filtering, a voltage regulator tube ensures the base of the triode Q3 to be stable, namely, the voltage of the capacitor C5 is stabilized, finally, the two signals are input into an operational amplifier AR4 and an operational amplifier AR5 in-phase input end together, in order to further ensure the accuracy of the two signals, a diode D7 is designed for one path to detect signals, the signals are fed back to the anti-phase input end of the operational amplifier AR3, the operational amplifier AR3 regulates the two paths of output signals to the anti-phase input end of the operational amplifier AR 42 by using the feedback signals of the diode D7, the two paths of diode D6 are designed for feeding back to the anti-phase input end of the operational amplifier AR5, the function of calibrating the signal potential of the in-phase input end of the operational amplifier AR4 is achieved, the accuracy of receiving signals by the building construction information monitoring system terminal is ensured, and finally the operational amplifier AR4 compares the signals and sends the signals to the building construction information monitoring system terminal through the signal emitter E1;
in the specific structure of the separation calibration module, one end of a variable resistor RW1 is connected to the anode of a diode D1 and one end of a capacitor C1, the other end of the variable resistor RW1 is connected to the cathode of the diode D1 and one end of a resistor R1 and one end of the capacitor C1, the anode of the diode D1 is connected to the capacitor C1, the other end of the capacitor C1, the cathode of the diode D1, the anode of the diode D1, the cathode of the diode D1, the resistor R1, one end of the capacitor C1 and an output port of the signal sampling module, the other end of the resistor R1 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the base of a transistor Q1, the collector of the transistor Q1, the emitter of the transistor Q1 is connected to the other end of the resistor R1, the sliding inductor L1 of the variable resistor R1, the other end of the inductor C1 and the cathode of the capacitor C1 are connected to the cathode of the voltage regulator D1, the resistor R1 and the other end of the voltage regulator 1, One end of a capacitor C3, the other end of the resistor R8 is connected with the control electrode of the diode D7 and the other end of the capacitor C3, the non-inverting input end of an operational amplifier AR2, the anode of the diode D7 is connected with the other end of the resistor R7, the cathode of the diode D7 is connected with the inverting input end of the operational amplifier AR 7, the inverting input end of the operational amplifier AR 7 is connected with one end of the resistor R7, the output end of the operational amplifier AR 7 is connected with the non-inverting input end of the operational amplifier AR 7, the non-inverting input end of the operational amplifier AR 7 and the other end of the resistor R7, the other end of the resistor R7 is connected with one end of the resistor R7, the cathode of the resistor R7 and the anode of the voltage regulator D7, the control electrode of the diode D7, the anode of the diode D7 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the power supply +3.3V, the cathode of the resistor R7 is connected with the non-inverting input end of the resistor R7, the inverting input end of the operational amplifier AR, the output end of the op amp AR4 is connected to the signal transmitter E1.
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 signals output by signal acquisition equipment in the building construction information monitoring system, an operational amplifier AR1 is used to amplify the signals in phase, a power supply terminal of the signal sampler J1 is connected to +5V, a ground terminal of the signal sampler J1 is grounded, an output terminal of the signal sampler J1 is connected to a negative electrode of a voltage regulator tube D1 and a non-phase input terminal of an operational amplifier AR1, a positive electrode of the voltage regulator tube D1 is grounded, an inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R1 and a resistor R2, the other end of a resistor R1 is grounded, and an output terminal of the operational amplifier AR1 is connected to the other end of a resistor R2.
The invention particularly relates to a building construction information monitoring system based on the Internet of things, which comprises a signal sampling module and a separation calibration module, wherein the signal sampling module samples signals output by signal acquisition equipment in the building construction information monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module receives the signals output by the signal sampling module, divides the signals output by the signal sampling module into two paths, one path is a main signal, rectifies the signals by using a diode D3, a diode D4 and a variable resistor RW1, decouples a capacitor C1 and a capacitor C1, rectifies the signals by using the unidirectional conductivity of a diode D3 and a diode D4, when the signals are positive, the diode D3 is conducted, otherwise, the diode D4 is conducted, then divides the voltage by using the variable resistor RW1 to realize the rectifying function, and only can carry out frequency modulation after ensuring the waveform rectification of the signals, an inductor L2, a capacitor C3 and a capacitor C4 are used for forming a frequency modulation circuit to stabilize signal frequency, the inductor L2 filters high-frequency signal interference, the capacitor C4 and the capacitor C3 filter low-frequency signal interference, then an operational amplifier AR2 is used for buffering signals to prevent normal signal distortion caused by direct comparison of the signals, two paths of signals are secondary signals, namely a detection loop, firstly a triode Q2, a triode Q3 and a capacitor C5 are used for detecting abnormal signals, the resistors R3 and R4 are used for dividing and extracting output signals of a signal sampling module, if the signals are the abnormal high-level signals, the triodes Q2 and Q8 are conducted, otherwise, the signals are not conducted, the capacitor C5 plays a filtering role, a voltage stabilizing tube is used for ensuring that the base of the triode Q3 is stable, the voltage of the capacitor C5 is stabilized, and finally the two paths of signals are input into the operational amplifier AR4, In order to further ensure the accuracy of two paths of signals, one path of the designed diode D7 detects signals, feedback signals are fed into the inverting input end of the operational amplifier AR3, the operational amplifier AR3 adjusts two paths of output signals to the inverting input end of the operational amplifier AR4 by using the feedback signals of the diode D7, and similarly, two paths of the designed diode D6 feeds abnormal signals back to the inverting input end of the operational amplifier AR5, so as to achieve the function of calibrating the signal potential of the inverting input end of the operational amplifier AR4, ensure the accuracy of signal receiving of a building construction information monitoring system terminal, and finally, the operational amplifier AR4 compares the signals and sends the signals to the building construction information monitoring system terminal through the signal emitter 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 (2)
1. A building construction information monitoring system based on the Internet of things comprises a signal sampling module and a separation calibration module, and is characterized in that the signal sampling module samples signals output by signal acquisition equipment in the building construction information monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module receives the signals output by the signal sampling module, and the signals output by the separation calibration module are sent to a building construction information monitoring system terminal through a signal transmitter E1;
the separation calibration module comprises a variable resistor RW, one end of the variable resistor RW is connected with the anode of a diode D and one end of a capacitor C, the other end of the variable resistor RW is connected with the cathode of the diode D, one end of the capacitor C, the anode of the diode D is connected with the capacitor C, the other end of the capacitor C, the cathode of the diode D, the resistor R, one end of the capacitor C and the output port of the signal sampling module, the other end of the resistor R is connected with the anode of the diode D, the cathode of the diode D is connected with the base of a triode Q and the collector of the triode Q, the emitter of the triode Q is connected with the other end of the resistor R, the sliding end of the variable resistor RW is connected with one end of an inductor L and one end of the capacitor C, the other end of the inductor L is connected with the other end of the capacitor C and the other end of the resistor R, One end of a capacitor C3, the other end of the resistor R8 is connected with the control electrode of the diode D7 and the other end of the capacitor C3, the non-inverting input end of an operational amplifier AR2, the anode of the diode D7 is connected with the other end of the resistor R7, the cathode of the diode D7 is connected with the inverting input end of the operational amplifier AR 7, the inverting input end of the operational amplifier AR 7 is connected with one end of the resistor R7, the output end of the operational amplifier AR 7 is connected with the non-inverting input end of the operational amplifier AR 7, the non-inverting input end of the operational amplifier AR 7 and the other end of the resistor R7, the other end of the resistor R7 is connected with one end of the resistor R7, the cathode of the resistor R7 and the anode of the voltage regulator D7, the control electrode of the diode D7, the anode of the diode D7 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the power supply +3.3V, the cathode of the resistor R7 is connected with the non-inverting input end of the resistor R7, the inverting input end of the operational amplifier AR, the output end of the op amp AR4 is connected to the signal transmitter E1.
2. The building construction information monitoring system based on the Internet of things as claimed in claim 1, wherein 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 ground end of a signal sampler J1 is connected with ground, 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 a voltage regulator tube D1 is connected with ground, 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 connected with ground, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and an input port of the separation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010467138.8A CN111653077A (en) | 2020-05-28 | 2020-05-28 | Building construction information monitoring system based on Internet of things |
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| CN202010467138.8A CN111653077A (en) | 2020-05-28 | 2020-05-28 | Building construction information monitoring system based on Internet of things |
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Application publication date: 20200911 |