CN106759544B - A kind of pit retaining monitoring collector and system - Google Patents
A kind of pit retaining monitoring collector and system Download PDFInfo
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- CN106759544B CN106759544B CN201611245179.2A CN201611245179A CN106759544B CN 106759544 B CN106759544 B CN 106759544B CN 201611245179 A CN201611245179 A CN 201611245179A CN 106759544 B CN106759544 B CN 106759544B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention discloses a kind of pit retaining monitoring collector and systems, including acquisition module, processing module and power module；Wherein, the acquisition module of the pit retaining monitoring collector is connect with multiple sensors in foundation pit；The processing module generates control signal for receiving acquisition instructions, and is sent to the acquisition module；The acquisition module is used to generate pumping signal to a sensor corresponding in foundation pit according to the control signal, and acquires the detection signal of the sensor；The processing module is also used to receive the detection signal that the acquisition module is sent, and handles and generate foundation pit parameter letter；The power module is used to provide power supply signal for the acquisition module and the processing module.A kind of pit retaining monitoring collector and system that there is provided through the invention guarantee the personal safety of survey crew, easy to operate, precision is high, strong antijamming capability, it can be achieved that efficient data monitoring, avoids the error as caused by hand-kept or manual conversion.
Description
Technical field
The present embodiments relate to field of measuring technique more particularly to a kind of pit retaining monitoring collector and systems.
Background technique
With the rapid development of China's infrastructure, the deep-foundation pit engineerings such as subway station, building construction basis build also day
Benefit increases.In the work progress of deep-foundation pit engineering, the stability of supporting construction just seems of crucial importance.In Modern Information
Under the guidance of construction concept, to foundation pit supporting construction and the foundation pit periphery soil body, construction of structures etc. carry out real-time system monitoring at
For the important means for guaranteeing deep pit monitor.Wherein to the monitoring of supporting construction be content mostly important in entire monitoring system it
One.Therefore, by the monitoring to axial force of the supports, the force-bearing situation supported in work progress can be grasped in time, while can also be with
The substantially anti-deformation for pushing away building enclosure (stake or wall etc.).The size and its situation of change that accurate measurements go out axial force of the supports are to whole
It is very important for a Foundation Pit Construction safety.
It is at present that hand-held reading is passed through using artificial in-site measurement to the conventional method of reinforced concrete support axle power monitoring
Instrument individually reads type vibration wire Reinforcement Stress-count, measures the stress value of reinforcing bar, then manually calculates axial force of the supports.Such support shaft
Power measurement method falls behind, and monitored density and precision are many times all difficult to play the effect of foundation pit axial force of the supports monitoring and warning.Tool
This mode mainly has the deficiency of three aspects for body, and first aspect is because foundation pit axle power is typically all to be covered with entire foundation pit week
Side, in-site measurement personnel are read one by one by hand-held readout instrument, are required a great deal of time, and this monitored density is going out
The effect of timely early warning is often not achieved when existing dangerous situation, and not can guarantee the safety of survey crew itself.Second aspect, because
For the difference of the personal professional skill of observation, the data observed are very different；Artificial fraud data happen occasionally, the essence of data
Exactness not can guarantee, and cause very big puzzlement to the analysis and research of foundation pit axial force of the supports for scientific research and designer；It observes
Support shaft force value passes through hand-kept, manual conversion, and the probability for error occur is very big.The third aspect often has around foundation pit big
Power apparatus work, resulting interference are very big to the axial force of the supports reinforcing rib meter stress value stability influence of vibratory string class.
Summary of the invention
The present invention provides a kind of pit retaining monitoring collector and system, to solve foundation pit axial force of the supports monitoring data inaccuracy
The problem of.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of pit retaining monitoring collector, including acquisition module, processing module and power module；
Wherein, the acquisition module of the pit retaining monitoring collector is connect with multiple sensors in foundation pit；
The processing module generates control signal for receiving acquisition instructions, and is sent to the acquisition module；
The acquisition module is used to generate excitation letter to a sensor corresponding in foundation pit according to the control signal
Number, and acquire the detection signal of the sensor；
The processing module is also used to receive the detection signal that the acquisition module is sent, and handles and generate foundation pit ginseng
Number signal；
The power module is used to provide power supply signal for the acquisition module and the processing module.
Further, in above-mentioned foundation pit collector, the acquisition module includes: channel selection circuit, selective frequency amplifier circuit
And excitation chain；
The channel selection circuit is used to control the selective frequency amplifier circuit and excitation chain according to the control signal
The sensor connection corresponding with foundation pit；
The excitation chain is for the string wire starting of oscillation to the sensor being attached thereto；
The selective frequency amplifier circuit is used for the detection caused by the string wire starting of oscillation for the sensor being attached thereto
Signal amplifies filtering processing.
Further, the foundation pit collector, further includes:
Photoelectric isolation module, the photoelectric isolation module respectively with the channel selection circuit, the selective frequency amplifier circuit,
The excitation chain and the processing module connection, for by the control signal and the detection signal progress electrically every
From.
Further, in above-mentioned foundation pit collector, the photoelectric isolation module include multiple first kind photoelectrical couplers,
One Second Type photoelectrical coupler and a third type photoelectrical coupler；The first kind photoelectrical coupler, Second Type
Photoelectrical coupler and third type light thermocouple include Light-Emitting Diode, phototriode and pull-up resistor；
Wherein, the input terminal of the light emitting diode in the first kind photoelectrical coupler and the processing module connect
It connects；The output end of the light emitting diode in the first kind photoelectrical coupler is connect with digital circuit ground end；It is described
The emitter of the phototriode in first kind photoelectrical coupler is connect with analog circuit ground terminal；The first kind
The collection of the phototriode in described pull-up resistor one end and the first kind photoelectrical coupler in photoelectrical coupler
Electrode connection；The other end and the channel selection circuit of the pull-up resistor in the first kind photoelectrical coupler connect
It connects；
The input terminal and the selective frequency amplifier circuit of the light emitting diode in the Second Type photoelectrical coupler connect
It connects；The output end of the light emitting diode in the Second Type photoelectrical coupler is connect with analog circuit ground terminal；It is described
The emitter of the phototriode in Second Type photoelectrical coupler is connect with digital circuit ground end；The Second Type
The collection of the phototriode in described pull-up resistor one end and the Second Type photoelectrical coupler in photoelectrical coupler
Electrode connection；The other end of the pull-up resistor in the Second Type photoelectrical coupler is connect with the processing module；
The input terminal of the light emitting diode in the third type photoelectrical coupler is connect with the processing module；Institute
The output end for stating the light emitting diode in third type photoelectrical coupler is connect with digital circuit ground end；The third class
The emitter of the phototriode in type photoelectrical coupler is connect with analog circuit ground terminal；The third type light thermocouple
The collector of the phototriode in described pull-up resistor one end and the third type photoelectrical coupler in clutch connects
It connects；The other end of the pull-up resistor in the third type photoelectrical coupler is connect with the excitation chain.
Further, in above-mentioned foundation pit collector, the power module includes: main power source and power isolation module；
The main power source is connect with external power supply signal wire, the power isolation module and the processing module respectively；
The power isolation module is also connect with the acquisition module, the power supply signal for providing the main power source with
External power supply signal isolation.
Further, in above-mentioned foundation pit collector, the power isolation module includes isolated from power chip, the power supply every
Off-chip piece includes positive voltage output end, negative voltage output end, analog circuit ground terminal, target voltage input terminal, device ground end；
Wherein, the positive voltage output end is connect with the acquisition module；
The negative voltage output end is connect with the acquisition module；
The target voltage input terminal is connect with the main power source.
Further, in above-mentioned foundation pit collector, the processing module includes:
Processing unit, interface unit, storage unit and digital power；
The processing unit is used to receive the detection signal that the acquisition module is sent, and handles and generate foundation pit parameter
Signal；
The interface unit is connect with external bus, for the foundation pit parameter signal to be sent to the acquisition instructions
Sender；
The storage unit, for storing the foundation pit parameter signal；
The digital power is connect with the processing unit, the interface unit and the storage unit respectively, is used for
Operating voltage is provided for the processing unit, the interface unit and the storage unit.
Further, in above-mentioned foundation pit collector, the channel selection circuit includes channel selecting chip；The channel choosing
Selecting chip includes control signal input, public input terminal；
Wherein, the light of the control signal input and first kind photoelectrical coupler in the photoelectric isolation module
The collector of quick triode connects；
The public input terminal is connect with the excitation chain, the selective frequency amplifier circuit；
Further, in above-mentioned foundation pit collector, the detection signal includes power frequency value, the foundation pit parameter signal
Including support shaft force value.
The embodiment of the present invention also provides a kind of pit retaining monitoring system, including pit retaining monitoring collector described in any of the above embodiments
With the multiple sensors being located in foundation pit.
Efficient data prison may be implemented in a kind of pit retaining monitoring collector provided in an embodiment of the present invention and system
It surveys, avoids the error as caused by hand-kept or manual conversion, ensure that the personal safety of survey crew, and easy to operate,
Precision is high, strong antijamming capability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of overall structure block diagram for pit retaining monitoring collector that the embodiment of the present invention one provides；
Fig. 2 is a kind of overall structure block diagram of pit retaining monitoring collector provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of physical circuit figure of photoelectric isolation module provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of physical circuit figure of power isolation module provided by Embodiment 2 of the present invention；
Fig. 5 is a kind of physical circuit figure of channel selection circuit provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of overall structure block diagram for pit retaining monitoring system that the embodiment of the present invention three provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of overall structure block diagram for pit retaining monitoring collector that the embodiment of the present invention one provides.As shown in Figure 1,
The embodiment of the present invention provides a kind of pit retaining monitoring collector, by controlling the acquisition of multichannel and eliminating the people in collection process
For error and environmental disturbances, high efficiency and data monitoring with high accuracy may be implemented.
The pit retaining monitoring collector includes: acquisition module 10, processing module 20 and power module 30；
Wherein, the acquisition module 10 of the pit retaining monitoring collector is connect with multiple sensors in foundation pit；
The processing module 20 generates control signal for receiving acquisition instructions, and is sent to the acquisition module 10；
The acquisition module 10 is used to generate excitation to a sensor corresponding in foundation pit according to the control signal
Signal, and acquire the detection signal of the sensor；
The processing module 20 is also used to receive the detection signal that the acquisition module 10 is sent, and handles generation base
Cheat parameter signal.
The power module 30 is used to provide power supply signal for the acquisition module 10 and the processing module 20.
Acquisition module is connect with multiple sensors in foundation pit in the embodiment of the present invention, and acquisition module can be believed according to control
Number corresponding sensor of selection, then generates pumping signal to the sensor, and acquire the detection signal of the sensor, therefore can
Switch the gating of each sensor and acquisition module with the control signal sent according to processor, realizes different sensors and acquisition mould
The channel of block switches.A therefore fixed position or survey crew that pit retaining monitoring collector can be arranged in foundation pit can be with
Home holds pit retaining monitoring collector at the scene, reads base one by one by hand-held pit retaining monitoring collector without survey crew
On the other hand sensing data in hole, improves data acquisition so on the one hand can guarantee the safety of survey crew itself
Efficiency.
Optionally, the acquisition module includes: channel selection circuit 11, selective frequency amplifier circuit 12 and excitation chain 13.
The channel selection circuit 11 be used to be controlled according to the control signal selective frequency amplifier circuit 12 and excitation chain 13 and
The corresponding sensor connection in foundation pit；The excitation chain 13 is used to act the string wire for the sensor being attached thereto
Vibration；The selective frequency amplifier circuit 12 is used for the detection signal caused by the string wire starting of oscillation for the sensor being attached thereto
Amplify filtering processing.
Wherein, the sensor can be vibrating wire sensor, for example including Reinforcement Stress-count.The described of the collector is adopted
Collection module is connect with multiple vibrating wire sensors in foundation pit by wired mode, to realize the acquisition of multichannel vibratory string signal.
Optionally, detection signal described in above-described embodiment includes power frequency value.Such as the string wire in vibrating wire sensor
Starting of oscillation after pumping signal is received, faint string wire vibration is converted into size by the inspection vibration coil in vibrating wire sensor again later
The current signal of variation, since the intrinsic frequency of string wire vibration only with itself is related, so electricity accessed by inspection vibration coil
The change frequency for flowing signal is equal to the vibration frequency of string wire.Optionally, above-mentioned foundation pit parameter signal includes support shaft force value.Processing
Module can calculate the frequency size of the detection signal of sensor, cooperate relevant parameter further according to pre-stored operational formula,
Calculate the corresponding foundation pit parameter signal of detection signal of the sensor.Foundation pit parameter signal is intuitive physical quantity such as support shaft
Force value, strain or pressure etc..Joined by directly will test signal processing using the processing module at the foundation pit of intuitive physical quantity
Number signal can have the case where large error hair to avoid the result data as caused by survey crew's hand-kept or manual conversion
It is raw.
Embodiment two
Fig. 2 is a kind of overall structure block diagram of pit retaining monitoring collector provided by Embodiment 2 of the present invention.Referring to fig. 2, institute
Stating pit retaining monitoring collector includes: acquisition module 10, processing module 20, power module 30 and photoelectric isolation module 40.The light
Be electrically isolated module 40 respectively in acquisition module 10 the channel selection circuit 11, the selective frequency amplifier circuit 12, it is described swash
Vibration circuit 13 and the processing module 30 connect, for the control signal and the detection signal to be carried out electrical isolation.
It should be noted that the circuit in processing module is number electricity since the circuit in acquisition module is analog circuit
Road, by increase photoelectric isolation module, digital circuit can be prevented to the interference of analog circuit, the frequency detecting made it is more acurrate and
Stablize.
Optionally, the power module 30 includes: main power source 31 and power isolation module 32.The main power source 31 respectively with
External power supply signal wire, the power isolation module 32 and the processing module 20 connect；The power isolation module 32 is also
It is connect with the acquisition module 10, the power supply signal for providing the main power source 31 and external power supply signal isolation.
It should be noted that being powered by the main power source by external DC power supply, collector then is converted into using DC-DC
The operating voltage (such as 5V) needed.Referring to fig. 2, the power isolation module 32 also respectively with the institute in the acquisition module 10
Channel selection circuit 11, selective frequency amplifier circuit 12 and excitation chain 13 is stated to connect.
Optionally, the processing module 20 includes: processing unit 21, interface unit 22, storage unit 23 and digital power
24.The processing unit 21 is used to receive the detection signal that the acquisition module 10 is sent, and handles and generate foundation pit parameter
Signal；The interface unit 22 is connect with external bus, for the foundation pit parameter signal to be sent to the acquisition instructions
Sender；The storage unit 23, for storing the foundation pit parameter signal.The digital power 24 is single with the processing respectively
Member 21, the interface unit 22 and the storage unit 23 connect, for being the processing unit 21, the interface unit 22
And the storage unit 23 provides operating voltage.
Optionally, the interface unit can be 485 interfaces, be connected with external bus, realize data transmit-receive.The storage
Unit can store the result data that measurement obtains and relevant parameter information (the calculating public affairs of reinforcing rib meter stress value and axial force of the supports
Formula is demarcated in storage unit, is called by the processing unit).Preferably, high-capacity flash memory memory is selected, can store
The data of more multichannel are effective extension in channel, provide reliable storage basis.The interface unit of the collector with
External bus can be connected by wired or wireless communication mode, may be implemented to the site safety position of foundation pit parameter signal
The acquisition of the wireless remote control of wired acquisition and long range.The digital power is powered by main power source, then is converted to processing list through DC-DC
The digital circuits such as member, memory and interface unit provide operating voltage.
Fig. 3 is a kind of physical circuit figure of photoelectric isolation module provided by Embodiment 2 of the present invention, referring to Fig. 3, the light
Being electrically isolated module 40 includes multiple first kind photoelectrical couplers 41, a Second Type photoelectrical coupler 42 and a third type
Photoelectrical coupler 43；The first kind photoelectrical coupler 41, Second Type photoelectrical coupler 42 and third type light thermocouple
43 include Light-Emitting Diode, phototriode and pull-up resistor.
Wherein, the input terminal of the light emitting diode in the first kind photoelectrical coupler 41 and the processing module
Connection；The output end of the light emitting diode in the first kind photoelectrical coupler 41 is connect with digital circuit ground end；
The emitter of the phototriode in the first kind photoelectrical coupler 41 is connect with analog circuit ground terminal；Described
Described pull-up resistor one end in one type photoelectrical coupler 41 with it is described photosensitive in the first kind photoelectrical coupler 41
The collector of triode connects；The other end of the pull-up resistor in the first kind photoelectrical coupler 41 and the channel
Selection circuit connection；
The input terminal and the selective frequency amplifier circuit of the light emitting diode in the Second Type photoelectrical coupler 42
Connection；The output end of the light emitting diode in the Second Type photoelectrical coupler 42 is connect with analog circuit ground terminal；
The emitter of the phototriode in the Second Type photoelectrical coupler 42 is connect with digital circuit ground end；Described
Described pull-up resistor one end in two type photoelectrical couplers 42 with it is described photosensitive in the Second Type photoelectrical coupler 42
The collector of triode connects；The other end of the pull-up resistor in the Second Type photoelectrical coupler 42 and the processing
Module connection；
The input terminal of the light emitting diode in the third type photoelectrical coupler 43 is connect with the processing module；
The output end of the light emitting diode in the third type photoelectrical coupler 43 is connect with digital circuit ground end；Described
The emitter of the phototriode in three type photoelectrical couplers 43 is connect with analog circuit ground terminal；The third type
The phototriode in described pull-up resistor one end and the third type photoelectrical coupler 43 in photoelectrical coupler 43
Collector connection；The other end and the excitation chain of the pull-up resistor in the third type photoelectrical coupler 43 connect
It connects.
It should be noted that any type of photoelectrical coupler is by light-emitting component (light emitting diode) and light member
Part (phototriode) is combined, and the electric signal of input drives light emitting diode, is allowed to issue the light of certain wavelength, by light
Quick triode receives and generates photoelectric current, using exporting after being further amplified.The conversion of electrical-optical-electrical is completed, to play
Input, output, isolation effect, make to output and input and be electrically entirely isolated.
Input terminal PIC0out, PIC1out and PIC2out pipe of light emitting diode in the first kind photoelectrical coupler
Foot is connected from the different pins of processing unit in processing module, the output of light emitting diode in the first kind photoelectrical coupler
End DGND pin is all connected with digitally；In the first kind photoelectrical coupler collector PIC0, PIC1 of phototriode and
PIC2 pin is connected pull-up resistor R141, R142 and R143 respectively, and then pins connections different from channel selection circuit, described
The emitter AGND pin of phototriode is all connected with simulation ground in first kind photoelectrical coupler.The first kind photoelectricity coupling
Clutch is multiple, such as can be 3 (as shown in Figure 3), and the switching for controlling 8 channels accesses different vibrating wire sensors.It needs
It is noted that first kind light can be arranged according to product demand on the basis of present inventive concept in those skilled in the art
The number of electric coupler, the embodiment of the present invention to the quantity of first kind photoelectrical coupler without limitation.
The CE of the input terminal CE pin of light emitting diode and selective frequency amplifier circuit is managed in the Second Type photoelectrical coupler
Foot connects, the output terminals A GND pin connection simulation ground of light emitting diode in the Second Type photoelectrical coupler；Described second
In type photoelectrical coupler phototriode collector CEin pin connect a pull-up resistor R144, then with processing module
The pin of middle processing unit is connected, the emitter DGND pin connection number of phototriode in the Second Type photoelectrical coupler
Word circuit ground end.
List is handled in the input terminal PZout pin of light emitting diode and processing module in the third type photoelectrical coupler
The pin of member connects, and the output end DGND pin connection digital circuit of light emitting diode connects in the third type photoelectrical coupler
Ground terminal；Collector PZ pin one pull-up resistor R151 of series connection of phototriode in the third type photoelectrical coupler, so
It is connect afterwards with the pin of excitation chain, the emitter AGND connection simulation of phototriode in the third type photoelectrical coupler
Circuit ground end.
It should be noted that illustratively setting+5V is the operating voltage of channel selection circuit in Fig. 3；+ 3.3V is processing
The operating voltage of module；+ 5V is the operating voltage of excitation chain.
Fig. 4 is a kind of physical circuit figure of power isolation module provided by Embodiment 2 of the present invention, the isolated from power mould
Block 32 includes isolated from power chip U12, and the isolated from power chip U12 includes positive voltage output end+5V pin, negative voltage output
End -5V pin, analog circuit ground terminal AGND pin, target voltage input terminal Vin+ pin, device ground end VIN- pin；
Wherein, the positive voltage output end+5V pin and the negative voltage output end -5V pin respectively with the acquisition
The different pins of module connect, and analog circuit ground terminal AGND pin connects analog circuit ground terminal AGND；The target voltage
Input terminal Vin+ pin is connect with the pin of the main power source, and device ground end VIN- pin connects common ground GND.
It should be noted that due to often there is the power frequency of powerful device work, electromagnetic radiation or alternating current dry around foundation pit
Disturb, the power supply in original distribution system can be interfered, especially analog circuit poor anti jamming capability, thus by increase every
From power supply chip, the working power of artificial circuit part in collector can be isolated from original distribution system.
Fig. 5 is a kind of physical circuit figure of channel selection circuit provided by Embodiment 2 of the present invention, the channel selecting electricity
Road 11 includes channel selecting chip U8；The channel selecting chip U8 includes control signal input A0, A1 and A2 pin, public
Input terminal COM pin；Wherein, control signal input A0, A1 and A2 pin is respectively and in the photoelectric isolation module 40
Collector PIC0, PIC1 of the phototriode of first kind photoelectrical coupler 41 are connected with PIC2 pin；It is described public
Input terminal COM pin is connect with the pin of the pin of the excitation chain 13 and the selective frequency amplifier circuit 12.
The channel selecting chip U8 further includes positive voltage input terminal V+ pin and negative voltage input terminal V- pin；It is described just
Voltage input end V+ pin is connect with the positive voltage output end+5V pin of the isolated from power chip U12；The negative voltage input
End V- pin is connect with the negative voltage output end -5V pin of the isolated from power chip U12；GND pin connection analog circuit connects
Ground terminal.
The channel selecting chip U8 is connect by control signal input A0, A1 and A2 pin (three channels switch pin)
The control signal for receiving processing unit in the processing module is managed further according to the control signal control public input terminal COM
Foot is switched to respectively on NO1 to the NO8 pin connecting with eight sensors, realizes the switching of signal path.Lead to for different
Road is provided with corresponding globally unique ID, and by ID, we can distinguish different channels and different collectors.
A kind of pit retaining monitoring collector provided in an embodiment of the present invention is acquired by controlling the acquisition of multichannel and eliminating
High efficiency and data monitoring with high accuracy, easy to operate, anti-interference energy may be implemented in human error and environmental disturbances in the process
Power is strong, and is not necessarily to survey crew's on-site land survey, ensure that the personal safety of survey crew.
Embodiment three
Referring to Fig. 6, a kind of overall structure block diagram of the pit retaining monitoring system provided for the embodiment of the present invention three, the system
The pit retaining monitoring collector M2 and multiple sensor M1 in foundation pit provided including any embodiment of the present invention.Due to this hair
Pit retaining monitoring system described in bright embodiment includes pit retaining monitoring collector, technical principle and generation described in above-described embodiment
Technical effect it is similar with above-mentioned pit retaining monitoring collector, therefore have with above-mentioned pit retaining monitoring collector similarly beneficial to effect
Fruit.The multiple sensor is placed in foundation pit scene, and survey crew passes through wired or nothing using the pit retaining monitoring collector
Line communication mode is connect with the multiple sensor, realizes the changeable remote pit retaining monitoring of multichannel, then by wired or nothing
Monitoring result data are sent in the entire monitoring process of external bus by line communication mode, since survey crew is not involved in monitoring number
According to acquisition and monitoring result calculating, efficient data monitoring may be implemented, avoid due to hand-kept or manually changing
Error caused by calculation ensure that the personal safety of survey crew, and easy to operate, and precision is high, strong antijamming capability.
It should be noted that it can also include other for supporting foundation pit to supervise that the embodiment of the present invention, which provides pit retaining monitoring system,
The circuit and device that examining system works normally, such as can also include external bus M3 and external power supply signal wire M4 etc..
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (5)
1. a kind of pit retaining monitoring collector characterized by comprising acquisition module, processing module, power module and Phototube Coupling
Module；
Wherein, the acquisition module of the pit retaining monitoring collector is connect with multiple sensors in foundation pit；
The processing module generates control signal for receiving acquisition instructions, and is sent to the acquisition module；
The acquisition module is used to generate pumping signal to a sensor corresponding in foundation pit according to the control signal, and
Acquire the detection signal of the sensor；
The processing module is also used to receive the detection signal that the acquisition module is sent, and handles and generate foundation pit parameter letter
Number；
The power module is used to provide power supply signal for the acquisition module and the processing module；
The acquisition module includes: channel selection circuit, selective frequency amplifier circuit and excitation chain；
The channel selection circuit is used to control the selective frequency amplifier circuit and excitation chain and base according to the control signal
The corresponding sensor connection in hole；
The excitation chain is for the string wire starting of oscillation to the sensor being attached thereto；
The selective frequency amplifier circuit is used for the detection signal caused by the string wire starting of oscillation for the sensor being attached thereto
Amplify filtering processing；
The photoelectric isolation module, the photoelectric isolation module respectively with the channel selection circuit, the selective frequency amplifier circuit,
The excitation chain and the processing module connection, for by the control signal and the detection signal progress electrically every
From；
The photoelectric isolation module includes multiple first kind photoelectrical couplers, a Second Type photoelectrical coupler and a third
Type photoelectrical coupler；The first kind photoelectrical coupler, Second Type photoelectrical coupler and third type light thermocouple are equal
Including Light-Emitting Diode, phototriode and pull-up resistor；
Wherein, the input terminal of the light emitting diode in the first kind photoelectrical coupler is connect with the processing module；
The output end of the light emitting diode in the first kind photoelectrical coupler is connect with digital circuit ground end；Described first
The emitter of the phototriode in type photoelectrical coupler is connect with analog circuit ground terminal；The first kind photoelectricity
The collector of the phototriode in described pull-up resistor one end and the first kind photoelectrical coupler in coupler
Connection；The other end of the pull-up resistor in the first kind photoelectrical coupler is connect with the channel selection circuit；
The input terminal of the light emitting diode in the Second Type photoelectrical coupler is connect with the selective frequency amplifier circuit；Institute
The output end for stating the light emitting diode in Second Type photoelectrical coupler is connect with analog circuit ground terminal；Second class
The emitter of the phototriode in type photoelectrical coupler is connect with digital circuit ground end；The Second Type photoelectricity coupling
The collector of the phototriode in described pull-up resistor one end and the Second Type photoelectrical coupler in clutch connects
It connects；The other end of the pull-up resistor in the Second Type photoelectrical coupler is connect with the processing module；
The input terminal of the light emitting diode in the third type photoelectrical coupler is connect with the processing module；Described
The output end of the light emitting diode in three type photoelectrical couplers is connect with digital circuit ground end；The third type light
The emitter of the phototriode in electric coupler is connect with analog circuit ground terminal；The third type photoelectrical coupler
In described pull-up resistor one end connect with the collector of the phototriode in the third type photoelectrical coupler；Institute
The other end for stating the pull-up resistor in third type photoelectrical coupler is connect with the excitation chain；
The channel selection circuit includes channel selecting chip；The channel selecting chip includes control signal input, public
Input terminal；
Wherein, the control signal input and described photosensitive three of first kind photoelectrical coupler in the photoelectric isolation module
The collector of pole pipe connects；
The public input terminal is connect with the excitation chain, the selective frequency amplifier circuit；
The power module includes: main power source and power isolation module；
The main power source is connect with external power supply signal wire, the power isolation module and the processing module respectively；
The power isolation module is also connect with the acquisition module, the power supply signal for providing the main power source and outside
Power supply signal isolation.
2. pit retaining monitoring collector according to claim 1, which is characterized in that the power isolation module include power supply every
Off-chip piece, the isolated from power chip include positive voltage output end, negative voltage output end, analog circuit ground terminal, target voltage
Input terminal, device ground end；
Wherein, the positive voltage output end is connect with the acquisition module；
The negative voltage output end is connect with the acquisition module；
The target voltage input terminal is connect with the main power source.
3. pit retaining monitoring collector according to claim 1, which is characterized in that the processing module includes:
Processing unit, interface unit, storage unit and digital power；
The processing unit is used to receive the detection signal that the acquisition module is sent, and handles and generate foundation pit parameter letter
Number；
The interface unit is connect with external bus, for the foundation pit parameter signal to be sent to the transmission of the acquisition instructions
Side；
The storage unit, for storing the foundation pit parameter signal；
The digital power is connect with the processing unit, the interface unit and the storage unit respectively, is used for as institute
It states processing unit, the interface unit and the storage unit and operating voltage is provided.
4. pit retaining monitoring collector according to claim 1, which is characterized in that the detection signal includes power frequency
Value, the foundation pit parameter signal includes support shaft force value.
5. a kind of pit retaining monitoring system characterized by comprising
Pit retaining monitoring collector of any of claims 1-4 and multiple sensors in foundation pit.
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| CN109555098A (en) * | 2018-10-26 | 2019-04-02 | 浙江海岸岩土工程技术有限公司 | A kind of large size drainage pumping plant deep basal pit in-situ monitoring system |
| CN111812179B (en) * | 2020-07-21 | 2024-06-18 | 中山蓝网物联技术有限公司 | Driving detection circuit and detection equipment of concrete sensor |
| CN114979822A (en) * | 2022-04-29 | 2022-08-30 | 鸿准精密模具（昆山）有限公司 | Data acquisition and analysis system and data acquisition circuit |
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