CN102621530A - Equidistance prompting device of ground penetrating radar based on singlechip - Google Patents
Equidistance prompting device of ground penetrating radar based on singlechip Download PDFInfo
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- CN102621530A CN102621530A CN2012101123207A CN201210112320A CN102621530A CN 102621530 A CN102621530 A CN 102621530A CN 2012101123207 A CN2012101123207 A CN 2012101123207A CN 201210112320 A CN201210112320 A CN 201210112320A CN 102621530 A CN102621530 A CN 102621530A
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Abstract
The invention discloses an equidistance prompting device of a ground penetrating radar based on a singlechip. The equidistance prompting device is arranged on the ground penetrating radar, and is characterized in that the singlechip is arranged in the equidistance prompting device, and comprises a central processor, a program storage, a data storage and a clock. The equidistance prompting device is characterized in that a magnetic sensor is arranged outside the equidistance prompting device; the output of the magnetic sensor is connected with the central processor of the singlechip; the output of the central processor of the singlechip is connected with a driving circuit of a sound prompter; and the driving circuit of the sound prompter is connected with the sound prompter. The equidistance prompting device has the beneficial effects that labor force is saved, danger caused by the increase of the quantity of persons on rugged slopes is lowered, and a radar antenna can be positioning accurately under the condition of arc-shaped detection circuit or high-fluctuation roads.
Description
Technical field
The present invention relates to engineering geophysics, exactly relate to the equidistant suggestion device in a kind of SCM Based GPR (also claiming geological radar) detection process.
Background technology
Geological radar (GPR) the electromagnetic surveying technology that to be a kind of different dielectric characteristic of utilizing different objects position sightless objective body or interface in underground or the object; Through launching frequency electromagnetic waves to direction to be measured; The different dielectric character of utilizing different medium to have is carried out target discrimination according to receiving the character of returning waveform.Because the geologic radar detection means have the precision height, applicability is wide, surveys numerous advantages such as not damaged, and prospecting and construction quality detection two big main fields have become a kind of important exploration means in the place in recent years, and the more multi-direction expansion of forward.
At present, there is Qi Bajia in the manufacturer of whole world geology radar, and its product type is various, but the principle of work basically identical of geological radar, and sample mode has only three kinds: bayonet point, survey method, measuring wheel method continuously.
Adopting under bayonet point and the continuous survey method situation; The use of one cover radar antenna equipment needs at least two people's cooperation; One of them people drags antenna in front and is responsible for carrying out sampling operation in the suitable time through the control of computer software; An other people then need follow the engineering scale that basis is placed in advance behind antenna, gives computer operator's prompting at a certain distance and goes sampling (or marking).Sometimes the working position of geological radar possibly be rugged slope, and personnel's walking itself just is not that easily personnel's increase can increase security risk undoubtedly; Sometimes the geologic radar detection path is not straight straight line, and road has ups and downs, and therefore increasing the staff has just increased more difficulty and risk.
The measuring wheel method is carried out the control of equidistance sampling and is had only under the rare occasion and could use; Though the measuring wheel principle is simple, it is convenient to realize, because it is had relatively high expectations to the coefficient of friction resistance of surface of contact; And require surface of contact comparatively smooth; Actual field seldom can satisfy this requirement, and therefore, this method can not be widely used in reality.
In order to overcome the defective of measuring wheel, the RAMAC company of Sweden has also developed a kind of device that is the agate slide fastener, is applied in its Radar Products, and its principle is to utilize a rope, and an end is fastened and played measuring point.An other end is fastened on people's waist, controls sampling through the scrambler on the coil, has only its product supportingly to use certainly, and remaining product all can not be used this equipment.Also there is defective in this device obviously, first it must under the straight line situation, use, if the position of radar detection is an arc shaped, it is just powerless; The second, road must be comparatively smooth, if road constantly has fluctuating; It also can't use, because its rope must strain, and the distance of measuring is an air line distance; And the road of field work is rugged, it is very big to rise and fall, so its use also is restricted.
Also can utilize GPS to locate in addition, but precision can meet the requirements of the GPS positioning equipment, price is too high, head and shoulders above the scope that can bear of this GPR equipment.Consider the factor of accuracy requirement and economic dispatch aspect, in a large amount of general items, seldom use.
Summary of the invention
In order to overcome existing GPR equipment in use, the defective that the accurate location of its distance needs the special messenger to cooperate, the present invention provides a kind of SCM Based GPR equidistant suggestion device of (also claiming geological radar); The invention still further relates to the method for work of this device.These apparatus and method can be with the position accurate in locating of antenna, and has reduced on the rugged slope because of personnel increase the danger that brings, simultaneously survey circuit be arc shaped or road rise and fall and also can use under the very big situation.
The technical scheme that the present invention solves its technical matters is: the equidistant suggestion device of a kind of SCM Based GPR (also claiming geological radar); These distance prompt devices are arranged on the GPR; It is characterized in that; Be provided with single-chip microcomputer in these distance prompt devices, this single-chip microcomputer comprises central processing unit (CPU), program storage, data-carrier store and clock; It is characterized in that these distance prompt device outer setting have Magnetic Sensor, the output of this Magnetic Sensor connects the central processing unit of said single-chip microcomputer; The output of the central processing unit of said single-chip microcomputer connects the driving circuit of auditory tone cues device, and the driving circuit of this auditory tone cues device connects the auditory tone cues device.
The present invention has following prioritization scheme:
1, described Magnetic Sensor at the outside set-up mode of these distance prompt devices is: the outer setting at said equidistant suggestion device has the slide rail device, and described Magnetic Sensor is arranged in this slide rail device.With the external magnetic field that this Magnetic Sensor is used, be respectively by some small magnets of fixed distance on a scale of stipulating.The scale that this is fixed with some small magnets is placed through in the described slide rail device, and the one of which end is fixed with the ground of being surveyed; Advancing when working along with GPR, this scale that is fixed with some small magnets constantly passes the slide rail device, and with the relative displacement distance of this slide rail device, the relative displacement on when advancing with GPR and tested ground is apart from consistent.
Described slide rail device can adopt tubular structure, and the axis of this tubular structure is parallel with the GPR working direction.The slide rail device also can adopt other shapes such as half slot shape.
2, described Magnetic Sensor can adopt tongue tube, magnetron, Hall switch or other magnetic induction mechanisms.
3, the equidistant suggestion device of described SCM Based GPR is provided with the mode of operation switching mechanism, and this mode of operation switching mechanism is more than one grade a switch, and this switch of many grades is connected said single-chip microcomputer and comprises on the central processing unit.
4, described mode of operation switching mechanism is respectively by light emitting diode indication mode of operation and state; And carry out mode switch through dialling bond switching.
Hardware aspect is the control core with the single-chip microcomputer, and this single-chip microcomputer comprises the module commonly used of nearly all data acquisition and processing (DAP) such as central processing unit (CPU), program storage, data-carrier store, clock, UART serial ports, IO interface; Device selects for use chargeable 4.2V lithium battery as power supply; Can repeated charge, install effective stream time at least more than 20 hours, (say for example with two light emitting diodes indication mode of operations; Whenever once point out, whenever once point out at a distance from 1.0 meters at a distance from 0.5 meter) and state and carry out mode switch through dialling bond switching; Be convenient identification, two kinds of mode of operations adopt the LED lamp of two kinds of different colours to show respectively, and device has adopted the passive element tongue tube as Magnetic Sensor; Break-make through induction exterior magnetic field determine switch; This extremely simple characteristic makes that the extraction of switching value becomes very convenient in the circuit, just need can obtain effective result through analog-to-digital step unlike many other circuit, device is in order to make the voice prompt volume enough big; Adopted a driving circuit, the program of device is used single-chip microcomputer C language aspect software.Mainly the subfunction through several sections in the overall systemic circulation is achieved; Program is simple and be easy to revise; Be convenient to further exploitation and expansion, program mainly realizes such workflow:----read sensor signal--counting--is according to the mode of operation count off for the judgment task pattern in start.The physical construction aspect; Function to Hall switch; Device is placed on the trailing aerial through active joint, sensor is provided with directive slide track through a top the Metallic rod that can stretch with a parallel placement, that from slide rail, pass, at a certain distance (for example 0.5 meter) embed the dip stick that a magnet serves as a mark and connect with synchronously.
The invention has the beneficial effects as follows: saving manpower, reduced the danger that brings because of personnel's increase on the rugged slope, is also can make radar antenna precision location under situation arc shaped or that the road fluctuating is very big surveying circuit simultaneously.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is overall system architecture figure of the present invention.
Fig. 2 is a software design workflow diagram of the present invention.
Embodiment
In Fig. 1; Along with radar antenna along the moving of survey line, the device and the slide rail device (including sensor) thereof that are fixed on the radar antenna are having parallel moving on the dip stick of magnet, when sensor probe during through magnet positions Hall element produce a signal; After this signal is handled through single-chip microcomputer; Send the enough big sound of a volume by hummer, operating personnel can mark in computer record, and the distance prompt function is achieved.
Function to Hall switch; A kind of special connected mode is devised: suggestion device is placed on the trailing aerial; Keep being connected with synchronously with the dip stick of parallel placement with the slide rail device (including sensor) that antenna connects, every at a distance from magnet of 0.5 meter (size can be set as required) embedding thing that serves as a mark on dip stick.For realizing this function, use bolt to be connected between slide rail device and the antenna, the employing open-close type between slide rail device and the dip stick is slidingly connected, and can guarantee like this to dismantle freely, can guarantee again relative motion continue carry out.
Hardware parameter and realization thereof
The Single-chip Controlling core
Because this device circuit structure is comparatively simple.Simultaneously need as communication module, very high demand not arranged the stability to pin level, consider from convenient programming, the STC89C52RC that directly adopts STC macrocrystalline company is as the control core.
According to its official's databook; STC89C52RC has comprised the module commonly used of nearly all data acquisition and processing (DAP) such as central processing unit (CPU), program storage, data-carrier store, clock, UART serial ports, IO interface, is a comparatively complete SOC(system on a chip).
For easy to make, illustrative circuitry has adopted 40 pin STC89C52RC chips of PDIP encapsulation, and the data information that provides according to official makes up and on other IO delivery outlets, adds other elements again behind the minimum system and carry out the realization of concrete function.
Power supply
As a mobility-aid apparatus that adopts Transistor-Transistor Logic level, device selects for use chargeable 4.2V lithium battery as power supply, and the advantage of a maximum is can repeated charge, and charging inlet places the shell side to make things convenient for charging operations.If use the lithium battery of 900mAh, calculate with maximum operating currenbt 30mA, install effective stream time at least more than 20 hours, can satisfy the demand of design fully.
Magnetic Sensor
Sensors selecting is a difficult point of this problem with using.It is bigger to choose the distance of reaction sensor difficulty that can satisfy the device demand simultaneously again enough far away.
The Magnetic Sensor that on market, can find is that active device and its WV are all in the 12V effect mostly; Seldom see workable Magnetic Sensor under the 5V voltage level; Therefore, as practical application, its application circuit also needs design voluntarily after the selection element.
In this Design of device was made, what Magnetic Sensor was selected for use was tongue tube.The tongue tube principle of work is very simple; Break-make through induction exterior magnetic field determine switch; This extremely simple characteristic makes that the extraction of switching value becomes very convenient in the circuit, need just can obtain effective result through analog-to-digital step unlike many other circuit.
Simultaneously, tongue tube is a kind of passive element, and its power consumption is extremely low.For the Magnetic Sensor of other kinds, control with single-chip microcomputer if desired, need to use 9V or above power supply to carry out energy supply and re-use similar 7805 element and carry out could function giving single-chip microcomputer after the transformation voltage stabilizing.And the tongue tube of choosing here can play similar sensor effect, on circuit connects, for guaranteeing the validity of element, adopt that irritating electric current connects method, simplifies by hardware configuration as input/output signal with switching value merely.
Mode of operation is switched
Carry out mode switch with two light emitting diodes indication mode of operations and state and through dialling bond switching.
, have two kinds of mode of operations here: every once point out, whenever once point out at a distance from 1.0 meters at a distance from 0.5 meter.Switch is drawn directly ground connection of back from the single-chip microcomputer pin, with low level as effective.
Be convenient identification; Two kinds of mode of operations adopt the LED lamp of two kinds of different colours to show respectively; Two kinds of different working modes are represented at the two ends of dialling bond switching ground connection respectively, have so just guaranteed that it is bright that LED only has one a time period, thereby have shown its duty.
Buzzer drive circuit
Because the exportable electric current of single-chip microcomputer pin is very little, even the STC89C52RC chip pin has adopted the mode of recommending by force, driving force is also still very limited.Therefore, need driving circuit of hummer need of work.
For making the voice prompt volume enough big; Use the bigger C8550 triode of enlargement factor to amplify; Hummer is connected to emitter, and the connect resistance of a number of elements kilohm of Vcc level is connected on collector, and base stage is connected on as control port on the pin of single-chip microcomputer and gets final product.
Because Keil C51 allows direct control is carried out in each pin position of single-chip microcomputer, directly uses the sbit variable to carry out defining operation for the different pin of each function and gets final product.Logical operation value through 1 and 0 directly can be judged the height of pin level.
Pin that it should be noted that 51 single-chip microcomputers all was to be defaulted as high level before assignment not, before to concrete bit manipulation, preferably shifted to an earlier date clear and definite its initial value and effective value, as possible, should use note explanation., when using the P2 pin, just need elder generation here,, therefore preferably earlier whole P2 pin all is defined as high level because it is effective to use signal to be low level to its initialize.
When the sampling of carrying out sensor signal (low level is effective) and judgement, should behind low level signal, use time-delay in Preliminary detection, here as required, about 50ms delays time.Whether the time-delay back uses branch statement to judge again effective, as remain valid, and assert that then resultant signal is effective, otherwise return scan cycle.
Total structure of program is to use the systemic circulation of while (1), though need carry out certain correction to sampled signal through means such as time-delays, compares and adds the method for external interrupt, implements simplyr, also is more prone to control.
Because the selection of programmed method is proper, in fact the detection of sensor useful signal is carried out when sensor leaves magnetic area, and this method can effectively be avoided because of the stop institute in the antenna towing process
The counting error that causes is the equal of that the disappearing of counting circuit of utilizing trigger to carry out trembled operation.
Make a general survey of whole procedure, time-delay almost all is applied in each subfunction.The first step as program design promptly is to write suitable delay procedure according to the crystal oscillator frequency of choosing.
In KEIL C51 single-chip microcomputer C language, do not have the Boolean type logical variable, therefore, as the function of judging significant level might as well use the unsigned character variable as the rreturn value type to make things convenient for program design.
The design of physical construction
For such Design of device; A difficult point is through suitable means moving of sensor to be consistent all the time with dragging of ground exploring radar antenna; And it is this locational synchronously because the restriction of sensor kind can only be passed through the design realization of mechanical connecting device.
For to little, the cheap requirement of use sensor bulk, the singularity of this device makes some classical sensor and application schemes thereof commonly used all can't use.Optoelectronic switch can be applicable to this operation of counting through judging shaded effect, but in this design, be difficult to keep induction region on optoelectronic switch probe and the ground exploring radar antenna synchronously; Though the color identification sensor can identification marking, volume is big, and distance of reaction short (generally in 3mm) is difficult to use in the design; Metal near switch need all generally that above voltage of 12V and volume are big, but decipherment distance only has under several millimeters, actual field disturbing factor too much, satisfied not demand.Therefore the final Hall switch of selecting, main because: the first, this is a passive element, power consumption is little, circuit connects simple; The second, volume is little, is fit to portable unit and uses; The 3rd, distance of reaction is far away, under the suitable situation of condition even can reach more than the 2cm.
For this reason; Function to Hall switch; A kind of special connected mode is devised: suggestion device is placed on the trailing aerial; Keep being connected with synchronously with the dip stick of parallel placement with the slide rail device (including sensor) that antenna connects, every at a distance from magnet of 0.5 meter (size can be set as required) embedding thing that serves as a mark on dip stick.For realizing this function, use bolt to be connected between slide rail device and the antenna, the employing open-close type between slide rail device and the dip stick is slidingly connected, and can guarantee like this to dismantle freely, can guarantee again relative motion continue carry out.
Claims (6)
1. the equidistant suggestion device of a SCM Based GPR; These distance prompt devices are arranged on the GPR; It is characterized in that be provided with single-chip microcomputer in these distance prompt devices, this single-chip microcomputer comprises central processing unit, program storage, data-carrier store and clock; It is characterized in that these distance prompt device outer setting have Magnetic Sensor, the output of this Magnetic Sensor connects the central processing unit of said single-chip microcomputer; The output of the central processing unit of said single-chip microcomputer connects the driving circuit of auditory tone cues device, and the driving circuit of this auditory tone cues device connects the auditory tone cues device.
2. the equidistant suggestion device of SCM Based GPR according to claim 1; It is characterized in that; Described Magnetic Sensor at the outside set-up mode of these distance prompt devices is: the outer setting at said equidistant suggestion device has the slide rail device; This slide rail device direction is set with the work of said GPR the time working direction consistent, described Magnetic Sensor is arranged in this slide rail device.
3. the equidistant suggestion device of SCM Based GPR according to claim 2 is characterized in that, with the external magnetic field that said Magnetic Sensor is used, is respectively by the some small magnets of fixed distance on a scale of stipulating; The scale that this is fixed with some small magnets is placed through in the described slide rail device, and the one of which end is fixed with the ground of being surveyed; Advancing when working along with GPR, this scale that is fixed with some small magnets constantly passes the slide rail device, and with the relative displacement distance of this slide rail device, the relative displacement on when advancing with GPR and tested ground is apart from consistent.
4. according to the equidistant suggestion device of claim 1 or 2 or 3 described SCM Based GPRs, it is characterized in that described Magnetic Sensor can adopt tongue tube, magnetron, Hall switch or other magnetic induction mechanisms.
5. the equidistant suggestion device of SCM Based GPR according to claim 4; It is characterized in that; The equidistant suggestion device of described SCM Based GPR is provided with the mode of operation switching mechanism; This mode of operation switching mechanism is more than one grade a switch, and this switch of many grades is connected said single-chip microcomputer and comprises on the central processing unit.
6. the equidistant suggestion device of SCM Based GPR according to claim 5 is characterized in that, described mode of operation switching mechanism is respectively by light emitting diode indication mode of operation and state; And carry out mode switch through dialling bond switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112320.7A CN102621530B (en) | 2012-04-17 | 2012-04-17 | Equidistance prompting device of ground penetrating radar based on singlechip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112320.7A CN102621530B (en) | 2012-04-17 | 2012-04-17 | Equidistance prompting device of ground penetrating radar based on singlechip |
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| CN102621530A true CN102621530A (en) | 2012-08-01 |
| CN102621530B CN102621530B (en) | 2014-03-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033851A (en) * | 2012-12-19 | 2013-04-10 | 山东大学 | Device of monitoring fissure deep fracture development by using geological radar and monitoring method |
| CN103076637A (en) * | 2013-01-09 | 2013-05-01 | 山东大学 | Delivery transmission device and delivery transmission method for tunnel single-hole geological radar imaging antenna |
| CN115257902A (en) * | 2022-08-16 | 2022-11-01 | 中铁第六勘察设计院集团有限公司 | Be suitable for bracket equipment that complicated topography geological radar removed transportation |
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| US4967199A (en) * | 1988-05-27 | 1990-10-30 | British Gas Plc | Ground probing radar method and apparatus |
| US6633252B2 (en) * | 2001-03-28 | 2003-10-14 | Larry G. Stolarczyk | Radar plow drillstring steering |
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2012
- 2012-04-17 CN CN201210112320.7A patent/CN102621530B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4967199A (en) * | 1988-05-27 | 1990-10-30 | British Gas Plc | Ground probing radar method and apparatus |
| US6633252B2 (en) * | 2001-03-28 | 2003-10-14 | Larry G. Stolarczyk | Radar plow drillstring steering |
Non-Patent Citations (1)
| Title |
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| 屈义萍等: "脉冲探地雷达回波信号数据采集的设计", 《电子设计工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033851A (en) * | 2012-12-19 | 2013-04-10 | 山东大学 | Device of monitoring fissure deep fracture development by using geological radar and monitoring method |
| CN103076637A (en) * | 2013-01-09 | 2013-05-01 | 山东大学 | Delivery transmission device and delivery transmission method for tunnel single-hole geological radar imaging antenna |
| CN115257902A (en) * | 2022-08-16 | 2022-11-01 | 中铁第六勘察设计院集团有限公司 | Be suitable for bracket equipment that complicated topography geological radar removed transportation |
| CN115257902B (en) * | 2022-08-16 | 2023-04-25 | 中铁第六勘察设计院集团有限公司 | Bracket equipment suitable for moving and transporting complex terrain geological radar |
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| CN102621530B (en) | 2014-03-19 |
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