CN214151462U - Remote data transmission system for railway construction - Google Patents
Remote data transmission system for railway construction Download PDFInfo
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- CN214151462U CN214151462U CN202120625916.1U CN202120625916U CN214151462U CN 214151462 U CN214151462 U CN 214151462U CN 202120625916 U CN202120625916 U CN 202120625916U CN 214151462 U CN214151462 U CN 214151462U
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Abstract
The utility model discloses a railway construction remote data transmission system, including data acquisition unit, microprocessor and wireless data transmission unit, wireless data transmission unit includes filtering noise reduction circuit, signal power amplifier transmitting circuit and stable regulating circuit, send out the long-range transmission of data signal through wireless data transmission unit, filtering noise reduction circuit utilizes band-pass filter principle effectively to restrain clutter signal outside the frequency band, filter out electromagnetic wave, high frequency noise such as power frequency, add degree of depth feedback regulation in the band-pass filtering process, promote the Q value of filter, make the filter restrain spurious outside the band more greatly, effectively promote the filtering characteristic, guarantee the precision of data signal transmission, in order to avoid the data signal to fluctuate in the power amplification process, adopt stable regulating circuit to adjust the power amplifier subassembly, thereby effectively guarantee the stability of power amplifier output, promote data signal communication transmission quality, effectively guaranteeing the safety of constructors.
Description
Technical Field
The utility model relates to a railway construction data transmission technical field especially relates to a railway construction remote data transmission system.
Background
With the development and progress of social economy, railway construction is in a continuously expanded situation, railway tunnel engineering projects are increased year by year, and construction scale is continuously expanded. The risk early warning technology in the construction process is effectively applied to assist constructors in safety management, and data information is sent to an upper computer for exchange and statistics by means of a wired or wireless network, so that monitoring and system diagnosis of dangerous events are realized, and the safety of railway construction is maintained and strengthened. In the process of remote transmission of construction data signals, because the environment in a railway is closed, the signals are obviously attenuated in the transmission process, and in addition, useful signals can be interfered by noise caused by electromagnetic waves or power supply entering the system in a serial mode in a wireless channel, so that the quality of data signal communication is influenced to a great extent, and the safety of railway constructors is threatened.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a remote data transmission system for railway construction.
The technical scheme for solving the problem is as follows: the utility model provides a railway construction remote data transmission system, includes data acquisition unit, microprocessor and wireless data transmission unit, wireless data transmission unit includes that the filtering falls the circuit of making an uproar, signal power amplifier transmitting circuit and stable regulation circuit, the input of the circuit of making an uproar is fallen in the filtering is connected microprocessor's signal output part, the output of the circuit of making an uproar is fallen in the filtering is connected signal power amplifier transmitting circuit's input, stable regulation circuit is used for right signal power amplifier transmitting circuit's working process carries out stable regulation.
Further, the filtering and noise reducing circuit comprises an operational amplifier AR1 and an operational amplifier AR2, an inverting input terminal of the operational amplifier AR1 is connected to one ends of a resistor R1 and a resistor R2, a non-inverting input terminal of the operational amplifier AR1 is connected to one ends of a resistor R2 and a capacitor C2, the other ends of the resistor R1 and a capacitor C1 are connected to a signal output terminal of the microprocessor and to an output terminal of the operational amplifier AR2 through a resistor R5, the other end of the resistor R2 is grounded, an output terminal of the operational amplifier AR1 is connected to the other end of the resistor R3 and to a non-inverting input terminal of the operational amplifier AR2 through a capacitor C2, and the inverting input terminal of the operational amplifier AR2 is connected to an output terminal of the operational amplifier AR2 through a capacitor C3.
Further, the signal power amplifier transmitting circuit comprises a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to a non-inverting input terminal of the operational amplifier AR2 and one end of the resistor R6, a gate of the MOS transistor Q1 is connected to the other end of the resistor R6, a collector of the triode VT1 and an output terminal of the stability adjusting circuit, a source of the MOS transistor Q1 is connected to a base of the triode VT1 and one end of the resistor R8, an emitter of the triode VT1 is connected to the other end of the resistor R8, one end of the resistor R9 and one end of the capacitor C5, the other ends of the resistor R9 and the capacitor C5 are grounded, and the other ends of the resistor R9 and the capacitor C5 are connected to a wireless signal transmitter through an inductor L1.
Further, the stability adjusting circuit comprises an operational amplifier AR3, a non-inverting input terminal of the operational amplifier AR3 is connected to an output terminal of the operational amplifier AR1 through a resistor R4, an inverting input terminal and an output terminal of the operational amplifier AR3 are connected to a base of a triode VT2 through a zener diode DZ1, a collector of the triode VT2 is connected to a gate of a MOS transistor Q1, and an emitter of the triode VT2 is grounded through a resistor R7 and a capacitor C4 which are connected in parallel.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a wireless data transmission unit goes out data signal teletransmission, adopts the filtering to fall the circuit of making an uproar to adjust data signal, utilizes the clutter signal outside the effective suppression frequency band of band-pass filter principle, high frequency noise such as filtering electromagnetic wave, power frequency.
2. The band-pass filtering in-process adds the fortune and puts ware AR2 and carries out degree of depth feedback regulation to fortune ware AR 1's output signal to promote the Q value of wave filter well, make the wave filter restrain more to the outband spurious, effectively promote filtering characteristic, guarantee data signal transmission's precision.
3. In order to avoid the fluctuation of data signals in the power amplification process, the power amplification assembly is adjusted by adopting the stable adjusting circuit, so that the stability of power amplification output is effectively ensured, and the communication transmission quality of the data signals is improved.
Drawings
Fig. 1 is a schematic circuit diagram of the wireless data transmission unit of the present 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 fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
A remote data transmission system for railway construction comprises a data acquisition unit, a microprocessor and a wireless data transmission unit. The data acquisition unit comprises an RFID radio frequency reader-writer for acquiring information of constructors, a sensor module and a video acquisition unit, and the data of the data acquisition unit is sent into the microprocessor for analysis, calculation and processing. The wireless data transmission unit comprises a filtering and noise reduction circuit, a signal power amplifier transmitting circuit and a stabilizing and adjusting circuit, wherein the input end of the filtering and noise reduction circuit is connected with the signal output end of the microprocessor, the output end of the filtering and noise reduction circuit is connected with the input end of the signal power amplifier transmitting circuit, and the stabilizing and adjusting circuit is used for stably adjusting the working process of the signal power amplifier transmitting circuit.
As shown in fig. 1, the filtering and noise reducing circuit includes operational amplifiers AR1 and AR2, an inverting input terminal of the operational amplifier AR1 is connected to one ends of resistors R1 and R2, a non-inverting input terminal of the operational amplifier AR1 is connected to one ends of a resistor R2 and a capacitor C2, the other ends of the resistor R1 and the capacitor C1 are connected to a signal output terminal of the microprocessor, and are connected to an output terminal of the operational amplifier AR2 through a resistor R5, the other end of the resistor R2 is grounded, an output terminal of the operational amplifier AR1 is connected to the other end of the resistor R3, and is connected to a non-inverting input terminal of the operational amplifier AR2 through a capacitor C2, and an inverting input terminal of the operational amplifier AR2 is connected to an output terminal of the operational amplifier AR2 through a capacitor C3.
The signal power amplifier transmitting circuit comprises a MOS tube Q1, the drain electrode of a MOS tube Q1 is connected with the non-inverting input end of an operational amplifier AR2 and one end of a resistor R6, the grid electrode of the MOS tube Q1 is connected with the other end of a resistor R6, the collector electrode of a triode VT1 and the output end of a stable adjusting circuit, the source electrode of a MOS tube Q1 is connected with the base electrode of a triode VT1 and one end of a resistor R8, the emitter electrode of a triode VT1 is connected with the other end of a resistor R8, one end of a resistor R9 and one end of a capacitor C5, the other end of the triode VT1 is connected with a wireless signal transmitter E1 through an inductor L1, and the other ends of the resistor R9 and the capacitor C5 are grounded.
The stable regulating circuit comprises an operational amplifier AR3, wherein the non-inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR1 through a resistor R4, the inverting input end and the output end of the operational amplifier AR3 are connected with the base electrode of a triode VT2 through a zener diode DZ1, the collector electrode of the triode VT2 is connected with the grid electrode of a MOS tube Q1, and the emitter electrode of a triode VT2 is grounded through a resistor R7 and a capacitor C4 which are connected in parallel.
The utility model discloses a concrete work flow and principle do: the microprocessor sends out the acquisition data signal through the wireless data transmission unit in a remote mode, and in order to improve communication transmission quality, the data signal is adjusted through the filtering noise reduction circuit. The resistors R2 and R5 and the capacitors C1 and C2 form a second-order band-pass filter network in the amplification process of the operational amplifier AR1, and the frequency band of the second-order band-pass filter network is consistent with the baseband frequency of the data signal, so that clutter signals outside the frequency band can be effectively suppressed, and high-frequency noise such as electromagnetic waves, power frequency and the like can be filtered. The operation amplifier AR2 is added to the band-pass filtering process to carry out depth feedback adjustment on the output signal of the operation amplifier AR1, so that the Q value of the filter is well improved, the filter has larger suppression on out-of-band spurious, the filtering characteristic is effectively improved, and the transmission accuracy of data signals is ensured.
The output signal of the filtering and noise reduction circuit is sent into the signal power amplifier transmitting circuit for processing, wherein the MOS tube Q1 and the triode VT1 form a power amplifier assembly for carrying out power amplification on the output signal of the filtering and noise reduction circuit, and the power amplifier efficiency is greatly improved.
In order to avoid the data signal to fluctuate in the power amplification process, the power amplification component is adjusted by adopting a stable adjusting circuit, and the specific working principle is as follows: adopt resistance R4 to shunt the enlarged output signal of fortune ware AR1 to follow through fortune ware AR3 voltage and enlarge and obtain a stable control voltage after the zener diode DZ1 carries out the amplitude stability, this control voltage drive triode VT2 switches on, utilize the stable operating condition of VT2 to adjust the power amplifier subassembly, resistance R7 also plays fine stabilizing action with electric capacity C4 at the projecting pole of triode VT2, guarantee triode VT2 collecting electrode stable, MOS pipe Q1 and triode VT1 all are in good conducting state, thereby effectively promote the stability of power amplifier output.
And finally, the capacitor C5 and the inductor L1 form parallel resonance to tune the amplified signal and send the signal into the wireless signal transmitter E1, so that the data signal is sent out at a specific frequency. The wireless signal emitter E1 forms remote communication with a far-end upper computer, and after the upper computer receives the data signals, the upper computer stores, processes and analyzes various railway construction data information by utilizing a mature upper computer data information processing technology, and provides alarm reminding and emergency diagnosis information in time when data are abnormal, thereby effectively guaranteeing the safety of constructors.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (4)
1. The utility model provides a railway construction remote data transmission system, includes data acquisition unit, microprocessor and wireless data transmission unit, its characterized in that: the wireless data transmission unit comprises a filtering noise reduction circuit, a signal power amplifier transmitting circuit and a stabilizing and adjusting circuit, wherein the input end of the filtering noise reduction circuit is connected with the signal output end of the microprocessor, the output end of the filtering noise reduction circuit is connected with the input end of the signal power amplifier transmitting circuit, and the stabilizing and adjusting circuit is used for stabilizing and adjusting the working process of the signal power amplifier transmitting circuit.
2. A railway construction remote data transmission system as in claim 1, wherein: the filtering and noise reducing circuit comprises operational amplifiers AR1 and AR2, the inverting input end of an operational amplifier AR1 is connected with one ends of a resistor R1 and R2, the non-inverting input end of an operational amplifier AR1 is connected with one ends of a resistor R2 and a capacitor C2, the other ends of the resistor R1 and a capacitor C1 are connected with the signal output end of the microprocessor and are connected with the output end of an operational amplifier AR2 through a resistor R5, the other end of the resistor R2 is grounded, the output end of an operational amplifier AR1 is connected with the other end of a resistor R3 and is connected with the non-inverting input end of an operational amplifier AR2 through a capacitor C2, and the inverting input end of the operational amplifier AR2 is connected with the output end of an operational amplifier AR2 through a capacitor C3.
3. A railway construction remote data transmission system as in claim 2, wherein: the signal power amplifier transmitting circuit comprises an MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with the non-inverting input end of an operational amplifier AR2 and one end of a resistor R6, the grid electrode of the MOS tube Q1 is connected with the other end of a resistor R6, the collector electrode of a triode VT1 and the output end of the stable adjusting circuit, the source electrode of the MOS tube Q1 is connected with the base electrode of the triode VT1 and one end of a resistor R8, the emitter electrode of the triode VT1 is connected with the other end of the resistor R8, one end of a resistor R9 and one end of a capacitor C5, the emitter is connected with a wireless signal transmitter through an inductor L1, and the other ends of the resistor R9 and the capacitor C5 are grounded.
4. A railway construction remote data transmission system as in claim 3, wherein: the stable regulating circuit comprises an operational amplifier AR3, wherein the non-inverting input end of the operational amplifier AR3 is connected with the output end of the operational amplifier AR1 through a resistor R4, the inverting input end and the output end of the operational amplifier AR3 are connected with the base electrode of a triode VT2 through a zener diode DZ1, the collector electrode of the triode VT2 is connected with the grid electrode of a MOS transistor Q1, and the emitter electrode of a triode VT2 is grounded through a resistor R7 and a capacitor C4 which are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625916.1U CN214151462U (en) | 2021-03-29 | 2021-03-29 | Remote data transmission system for railway construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120625916.1U CN214151462U (en) | 2021-03-29 | 2021-03-29 | Remote data transmission system for railway construction |
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| CN214151462U true CN214151462U (en) | 2021-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116614730A (en) * | 2023-07-21 | 2023-08-18 | 乾坤环保股份有限公司 | Distributed data acquisition module and monitoring system for hydraulic engineering environment monitoring |
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2021
- 2021-03-29 CN CN202120625916.1U patent/CN214151462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116614730A (en) * | 2023-07-21 | 2023-08-18 | 乾坤环保股份有限公司 | Distributed data acquisition module and monitoring system for hydraulic engineering environment monitoring |
| CN116614730B (en) * | 2023-07-21 | 2023-09-22 | 乾坤环保股份有限公司 | Distributed data acquisition module and monitoring system for hydraulic engineering environment monitoring |
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