CN103698366A - Multifunctional digital rock-soil static cone penetration test system - Google Patents
Multifunctional digital rock-soil static cone penetration test system Download PDFInfo
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Abstract
本发明公开一种多功能数字式岩土静力触探测试系统，其包括岩土静力触探组合式传感器智能变送器，基于CAN总线的数据传输仲裁单元，触探深度变化指示器和岩土静力触探数据处理终端；岩土静力触探组合式传感器智能变送器包括岩土静力触探锥尖阻力、侧摩阻力、孔压力数据测量模块、电阻率数据测量模块、剪切波速数据测量模块、倾斜角测量模块；基于CAN总线的数据传输仲裁单元包括CAN的收发器，通信接口，CAN调度协议；触探深度变化指示器包括与深度变化成比例的齿轮旋转装置，齿轮转速测量模块，转速与深度变化转换模块。本发明的优点是：多功能；组合式；智能化；数字式；操作便捷；效率高。
The invention discloses a multifunctional digital geotechnical static penetration test system, which includes a combined sensor intelligent transmitter for geotechnical static penetration, a data transmission arbitration unit based on CAN bus, a penetration depth change indicator and Geotechnical static sounding data processing terminal; geotechnical static sounding combined sensor intelligent transmitter includes geotechnical static sounding cone resistance, side friction resistance, pore pressure data measurement module, resistivity data measurement module, Shear wave velocity data measurement module, inclination angle measurement module; the data transmission arbitration unit based on CAN bus includes CAN transceiver, communication interface, and CAN scheduling protocol; the penetrating depth change indicator includes a gear rotation device proportional to the depth change, Gear speed measurement module, speed and depth change conversion module. The advantages of the present invention are: multifunctional; combined; intelligent; digital; easy to operate; and high in efficiency.
Description
technical field
The present invention relates to rock-soil engineering in-situ field tests, be specifically related to a kind of multifunction digital ground static sounding test macro.
background technology
Static sounding utilizes accurate static(al), with certain injection speed, circular cone probe is pressed in soil by a series of feeler levers, and the variablees such as the power recording according to probe, velocity of wave, resistivity carry out the physics character of indirect judgement soil.This measuring technology can provide soil layer and parameters in soil mechanics information in the situation that of disturbed soil not, is a kind of important in-situ testing technique using in engineering investigation.Compare laboratory soil test, it has, and efficiency is high, economical, reflection truth and do not destroy the characteristics such as soil body internal stress.
But, according to current domestic existing ground static sounding testing apparatus and research that repeatedly ground static sounding execute-in-place is tested, tradition static penetrometer system architecture is outmoded, analog signal transmission loss in cable is large, easily distortion, need to change that cable is very consuming time and efficiency is very low when single bridge probe and two-bridge probe exchange.Meanwhile, traditional ground static cone penetration equipment function singleness cannot be measured a plurality of parameters of same position simultaneously.Domesticly existingly without cable static sounding device, can not carry out Real-Time Monitoring to process of the test, and can not guarantee well the synchronous acquisition with depth signal.Injection sampling depth spacing is various, and domestic traditional ground static sounding depth-sampling spacing is 10cm, and U.S. Vertek-Hogentogler ground static sounding depth-sampling spacing is 5cm, and Dutch Geomil ground static sounding depth-sampling spacing is 2cm.In ground cone penetration test process, the feeler lever meeting run-off the straight in injection ground, this not only exerts an influence to the data that gather, and when serious, can cause feeler lever to fracture and damage equipment.
summary of the invention
The object of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of multifunction digital ground static sounding test macro is provided, the method is used CAN bus to carry out the communication of each module node, and this ground static sounding test macro can combine static point resistance, survey friction resistance, hole pressure data measurement module, resistivity data measurement module, the modules such as shear wave velocity data measurement module and incline measurement, thereby realize the single bridge using in current cone penetration test, the compatibility of doube bridge and three bridge ground static sounding probes, the value of intelligentized transmitter output is the reading of each test parameter, the data transmission module of CAN bus is realized the digital of system, combined type and multi-functional characteristic, the impact of cable in erasure signal transmitting procedure, the real-time display depth of feeler inspection depth deviation indicator and rate of change thereof, carry out exchanges data with each data measurement module of intelligent transducer and ground static sounding data processing terminal, thereby realize the data communication between each module.
In order to solve in static sounding test macro the problem of transmission cable to loss of signal in underground system and overground system data transmission procedure, the present invention need to provide a kind of ground static sounding testing scheme of long-distance digital signal transmission.
In order to solve memory card type without cable static penetrometer monitoring test process in real time, cannot observe the problem of test parameter real-time change situation, technical matters to be solved by this invention is to provide a kind of ground static sounding testing scheme that can Real-Time Monitoring, and overground system should have data processing terminal and monitor in real time.
In order to solve compatible different depth sampling interval, problem to be solved by this invention is that ground static sounding data processing terminal can arrange depth-sampling spacing.
For the heeling condition of feeler lever injection in monitoring test process, problem to be solved by this invention is to need to load the sensor of measuring heeling condition, and ground static sounding data processing terminal can show the attitude of feeler lever in ground in real time.
Described ground static sounding test macro comprises ground static sounding combined sensor intelligent transducer, the data transmission arbitration unit based on CAN bus, feeler inspection depth deviation indicator and ground static sounding data processing terminal.
Described ground static sounding combined sensor intelligent transducer comprises ground static sounding static point resistance, side friction, hole pressure data measurement module, resistivity data measurement module, shear wave velocity data measurement module, incline measurement module.Parameter measurement module can combine mutually, composite module on circuit by CAN data bus cascading and realize remote data transmission.
Described ground static sounding sensor intelligent transmitter data measurement module comprises ground static sounding sensor interface, analog signal conditioner module, analog-to-digital conversion module, microcontroller, power module, the data transmission module of CAN bus.The single bridge, doube bridge and the three bridge static sounding sensors that in the compatible cone penetration test at present of described sensor data interface, use.
Described simulated modulation circuit by amplification module, analog filter block and zero point automatic adjustment module form, described amplification module is used instrumentation amplifier, zero point, automatic adjustment module was used digital potentiometer automatically to regulate.
Described intelligent transducer static point resistance range is 40MPa, and theoretical measuring accuracy is 0.002KPa; Side friction range is 1MPa, and theoretical measuring accuracy is 0.060Pa; Hole pressure range is ± 1MPa that theoretical measuring accuracy is 0.119Pa.
Described power module provides 12V direct current by ground static sounding overground system, is responsible for the power supply of ground static sounding underground system, comprises sensor bridge power supply and data acquisition transport module.
Described intelligent transducer data measurement module has been used FIR digital filtering technique, can guarantee image data linear phase characteristic, filtering noise undesired signal.
Described intelligent transducer is directly exported the value of test parameter, and the value of test parameter retains 3 decimals, and data are transmitted after expanding 1000 times, and each numeral is all transmitted with corresponding ASCII character.
The described data transmission arbitration unit based on CAN bus comprises the transceiver of CAN, communication interface, CAN scheduling protocol.Each data acquisition module of intelligent transducer, feeler inspection depth deviation indicator and ground static sounding data processing terminal can carry out peer-to-peer communications mutually.
Described static point resistance, survey friction resistance and hole pressure intelligent transmitter module are ordered depth information and tilt angle information, resistivity transmitter is ordered depth information, and ground static sounding data processing terminal is ordered all data acquisition module block messages of intelligent transducer and depth information; It is synchronous that all depth informations keep.
Described ground static sounding intelligent transducer is loaded in steel sleeve, and static sounding probe switching hand place is fixed in one end, and one end is connected with feeler lever by switching hand.Wherein, between feeler lever and steel sleeve, can combine other intelligent transducer data measurement module.Ground static sounding cable in feeler lever, feeler inspection depth deviation indicator and ground static sounding data processing terminal be all connected in CAN bus, feeler inspection depth deviation indicator is fixed in ground static sounding injection system.
Feeler inspection depth deviation indicator comprises gear whirligig proportional to change in depth, gear rotational speed measurement module, rotating speed and change in depth modular converter, display module, data transmission module.
Described display module is used for display depth value and rate of change thereof, and data transmission module is used for a depth value and rate of change thereof and is real-time transmitted to ground static sounding data processing terminal, gives each intelligent transducer data acquisition module by change in depth communication simultaneously; Described data transmission module is used CAN bus transfer.
Described ground static sounding data processing terminal comprises mobile terminal hardware and software, can Real-Time Monitoring ground cone penetration test process, and real-time rendering data acquisition curve, 3-D display feeler lever angled view, and depth-sampling spacing can be set.Described data processing terminal software is realized each test data and is received, processes, merges, shows, stores and management.
Described ground static sounding data processing terminal can, by the degree of depth with by double mode triggering collection of time, can carry out the pore water pressure ground cone penetration test of static point resistance side friction power and pore pressure dissipation test.
Described data processing terminal software can save as image data TXT, EXCEL and DAT file, and can read corresponding TXT, EXCEL and DAT file, reappears image data curve.
accompanying drawing explanation
Fig. 1 is a kind of multifunction digital ground static sounding test system structure schematic diagram consistent with the concrete enforcement of the present invention.
Fig. 2 is a kind of multifunction digital ground static sounding test macro multiple measurement schematic diagram consistent with the concrete enforcement of the present invention.
Fig. 3 is a kind of multifunction digital ground static sounding intelligent transducer data acquisition module block structural diagram consistent with the concrete enforcement of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of the embodiment of a kind of multifunction digital ground of the present invention static sounding test macro, the embodiment of the present invention comprises static sounding probe 1, probe and sleeve catcher 2, static sounding data intelligence transmitter 3, steel sleeve 4, ground static sounding cable 5, steel sleeve and feeler lever catcher 6, carry combination intelligent transmitter 7, static sounding feeler lever 8, fixture baffle plate 9, static sounding injection system (movable part 10, fixed part 11), feeler inspection depth deviation indicator 12, experimental operation table horizontal alignment module 13, ground static sounding data processing terminal 14.Fig. 2 is a kind of multifunction digital ground of the present invention static sounding test macro multiple measurement schematic diagram.Probe is the three bridge static sounding sensors that can measure static point resistance, side friction and pore water pressure.By catcher, be connected with the steel sleeve that static sounding intelligent transducer is housed, intelligent transducer is fixed on one end of catcher, and the other end is connected with feeler lever by switching hand.Wherein, between feeler lever and steel sleeve, can combine other intelligent transducer data measurement module.Each junction is all used rubber ring to realize waterproof sealing.Feeler inspection depth deviation indicator gear is fixed on ground static sounding injection system fixed part, tooth bar is fixed on injection system activity part, gear rotational speed measuring appliance is aimed at gear, stroke directions inductor is fixed in fixture baffle plate, the injection downwards of injection system activity part promotes baffle plate and moves downward, and stroke inductor senses signal, makes gear rotational speed measuring appliance counting effectively, injection system upwards pulls up baffle plate stroke directions inductor and lost efficacy, anergy gear rotational speed measuring appliance.Feeler inspection depth deviation indicator and ground static sounding data processing terminal are connected in CAN bus.Intelligent transducer data acquisition module, feeler inspection depth deviation indicator and ground static sounding data processing terminal carry out peer-to-peer communications by CAN bus.Ground static sounding data processing terminal receives, processes, merges, shows, stores and manage test figure.
The another kind of embodiment of a kind of multifunction digital ground of the present invention static sounding test macro is to change three bridge sensors into single bridge or dual bridge sensor, and the parameter of measurement becomes one and two by original three.Single bridge and doube bridge static sounding sensor are the main sensor types using in current domestic static sounding in-situ test.
Another embodiment of a kind of multifunction digital ground static sounding test macro of the present invention is to connect ground static sounding resistivity test module, shear wave velocity module, measurement of dip angle module or their combination packing into after the sleeve of static sounding intelligent transducer again.The resistivity of soil and native water cut, concentration of metal ions etc. are in close relations, can be used for evaluating soil pollution situation.Shear wave velocity can be evaluated soil liquefaction degree, has important practical significance.Ground visual inspection module can show drill hole inner wall structural attitude, rock crack, country rock and coal seam contact interface etc., and can tentatively judge surrounding rock category, has significant technical economic benefit.
Introduce the implementation step of using a kind of multifunction digital ground of the present invention static sounding test macro in the present embodiment below:
Open ground static sounding test macro, on ground static sounding data processing terminal, set Test Information parameter, and carry out adjustment operation at zero point;
Injection system activity part applies downward power to fixture baffle plate, and described static sounding feeler lever is pressed in soil;
Stroke directions inductor enables, and gear rotational speed measuring appliance starts counting, and injection system activity is partly with carry-over bar to move downward, the rotation of rack drives gear, and gear rotational speed measuring appliance is according to gear teeth peak and tooth paddy counting, the displacement that each number of teeth is corresponding fixing;
The depth-sampling spacing that the every injection of the degree of depth arranges, feeler inspection depth deviation indicator triggers, display module display depth value and rate of change thereof, data transmission module is that data acquisition command passes through CAN bus transfer to each data acquisition module of intelligent transducer by change in depth Information encapsulation, depth value and rate of change thereof is transferred to ground static sounding data processing terminal simultaneously;
The corresponding acquisition module of ground static sounding underground system intelligent transducer receives command frame by Data Analysis, and trigger mode number converter carries out data acquisition, gathers static point resistance, side friction and pore water pressure three circuit-switched data;
Ground static sounding sensor signal enters analog to digital converter through intelligent transducer amplification module and filtration module, and analog to digital converter carries out analog to digital conversion to ground static sounding sensor data interface signal, and sends the data to microcontroller;
Microcontroller carries out FIR digital filtering to three circuit-switched data, after the corresponding parameters calibration coefficient conversion of filtered signal through microcontroller storage inside, retain 3 decimals, the value of gained expands 1000 times again, bits per inch word is encapsulated in CAN message by corresponding ASCII character, and be sent in CAN bus by CAN transceiver, be finally sent to ground static sounding data processing terminal;
Ground static sounding data processing terminal is processed, merges, shows, stores, manages and draw it after receiving data, by drawing, can monitor in real time ground cone penetration test situation; After ground static sounding data processing terminal parses pitch angle data, by 3-D view, show angle of inclination and the vergence direction of feeler lever;
At certain depth, carry out ground static sounding pore pressure dissipation test, ground static sounding data processing terminal sends dissipation experimental order frame according to static sounding communication protocol intelligent transducer corresponding data acquisition module;
After corresponding intelligent transducer acquisition module receives command analysis, open analog to digital converter and gather pore water pressure sensor data, and pack the data to CAN data message and send to ground static sounding data processing terminal by CAN transceiver, and show in real time pore water pressure dissipation curve on data processing terminal;
After having tested, data are saved as to required file, by testing rear Data Management Analysis, can differentiate and divide structure and the situation of change of soil layer, understanding soil layer.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a multifunction digital ground static sounding test macro, is characterized in that: this system comprises ground static sounding combined sensor intelligent transducer, the data transmission arbitration unit based on CAN bus, feeler inspection depth deviation indicator and ground static sounding data processing terminal.
2. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: described ground static sounding combined sensor intelligent transducer comprises ground static sounding static point resistance-side friction-hole pressure data measurement module, resistivity data measurement module, shear wave velocity data measurement module and incline measurement module;
Above-mentioned each data measurement module can combine mutually, the module after combination on circuit by CAN data bus cascading and realize remote data transmission.
3. a kind of multifunction digital ground static sounding test macro according to claim 2, is characterized in that: described ground static sounding sensor intelligent transmitter data measurement module comprises the data transmission module of ground static sounding sensor interface, analog signal conditioner module, analog-to-digital conversion module, microcontroller, power module and CAN bus;
Described simulated modulation module comprises amplification module, analog filter block and zero point automatic adjustment module;
Described analog-to-digital conversion module at least comprises 24 sigma-delta analog-to-digital conversion devices of 4 passage, and reference voltage is up to 5.5V;
Described intelligent transducer data measurement module has been used FIR digital filtering technique, can guarantee image data linear phase characteristic.
4. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: the calibration coefficient that described intelligent transducer is respectively tested parameter is stored in microcontroller inside.
5. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: described intelligent transducer is directly exported the value of test parameter;
The value of the test parameter of described intelligent transducer output retains 3 decimals, and data expand 1000 times of transmission, and each numeral is all transmitted with corresponding ASCII character.
6. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: the described data transmission arbitration unit based on CAN bus comprises the transceiver of CAN, communication interface, CAN scheduling protocol.
7. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: described feeler inspection depth deviation indicator comprises gear whirligig proportional to change in depth, gear rotational speed measurement module, rotating speed and change in depth modular converter, display module and data transmission module.
8. a kind of multifunction digital ground static sounding test macro according to claim 12, it is characterized in that: described display module is used for display depth value and rate of change thereof, data transmission module is used for a depth value and rate of change thereof and is real-time transmitted to ground static sounding data processing terminal; Described data transmission module is used CAN bus transfer.
9. a kind of multifunction digital ground static sounding test macro according to claim 1, is characterized in that: described ground static sounding data processing terminal comprises mobile terminal hardware and software;
Described data processing terminal software is realized each test data and is received, processes, merges, shows, stores and management;
Described ground static sounding data processing terminal adopts by the degree of depth and triggers and trigger double mode collection by the time, and the degree of depth spacing gathering by change and time interval are adjusted sampling rate, and the trigger collection time can arrange any initial sampling depth simultaneously;
Described ground static sounding data processing terminal Real-Time Monitoring ground cone penetration test process, shows the data that CAN bus sends in real time, draws corresponding data acquisition curve, shows feeler lever three-dimensional tilt view; Described data processing terminal software can save as image data TXT, EXCEL and DAT file;
Described data processing terminal software can read corresponding TXT, EXCEL and DAT file, reappears image data curve.
10. a kind of multifunction digital ground static sounding test macro according to claim 1, it is characterized in that: described each measurement module of ground static sounding intelligent transducer, feeler inspection depth deviation indicator and ground static sounding data processing terminal can carry out peer-to-peer communications.
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