CN107388954A - High reliability capacitive grating scale slit gauge - Google Patents
High reliability capacitive grating scale slit gauge Download PDFInfo
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- CN107388954A CN107388954A CN201610319233.7A CN201610319233A CN107388954A CN 107388954 A CN107388954 A CN 107388954A CN 201610319233 A CN201610319233 A CN 201610319233A CN 107388954 A CN107388954 A CN 107388954A
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- grating scale
- capacitive grating
- interface
- data
- high reliability
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of high reliability capacitive grating scale slit gauge, and it includes a capacitive grating scale, and what is be connected with the data-interface of the capacitive grating scale is used to the data-interface of capacitive grating scale being converted into the converter of universal sensor interface；The converter includes：Microprocessor, the interface conversion circuit being connected respectively with the capacitive grating scale data-interface and the microprocessor, the RS485 interfaces being connected with the microprocessor；Also include a d GPS locating module, and a repelling device.Stability of the present invention is good, of good reliability, easy for operation, novel in design, practical, application easy to spread.
Description
Technical field
The present invention relates to crack detecting device, more particularly to a kind of slit gauge with capacitive grating scale.
Background technology
Capacitor grid transducer is that one kind is based on variable area operation principle, the capacitance digital sensor of measurable big displacement.It is with other digital displacement transducers, such as grating, inductance fm is compared, with small volume, simple in construction, resolution ratio and the degree of accuracy are high, measuring speed is fast, small power consumption, cost are low, less demanding to use environment etc. prominent the characteristics of, therefore occupy highly important status in electronic measurement technique.As e measurement technology is more and more extensive to precise treatment, high speed, automation, integrated, intelligent, economization, non-contactization and the development in multifunction direction, the application of capacitor grid transducer.
Based on above-mentioned advantage, domestic and international relevant manufacturers can send out a series of capacitor grid transducers, be used widely in field of civil engineering such as railway, highway, subway, bridge, tunnel, mine, building, water conservancy dams.But existing capacitor grid transducer has the disadvantage that：Its price is high, and structure is relative complex, poor compatibility etc. between different brands, has limited to the use range of capacitor grid transducer.
Capacitor grid transducer is the important composition part of capacitive grating scale, at present, capacitive grating scale is at home using maturation, it carries expansion interface, it is usually used in the deformation measurement of the surface cracks such as bridge, side slope, palisades, but the data-interface of capacitive grating scale often is difficult to match with general sensor interface, this just couples with higher leveled computer to form measuring system and causes very big obstacle.The existing slit gauge structure also useless using capacitive grating scale come directly carry out rock mass or slope crack deformation measurement, in addition, not having positioning function also, therefore, prior art has much room for improvement and developed.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency in the prior art, there is provided a kind of high reliability capacitive grating scale slit gauge.
Technical scheme is used by the present invention solves prior art problem：A kind of high reliability capacitive grating scale slit gauge, wherein, it includes a capacitive grating scale, and what is be connected with the data-interface of the capacitive grating scale is used to the data-interface of capacitive grating scale being converted into the converter of universal sensor interface；
The converter includes：Microprocessor, the interface conversion circuit being connected respectively with the capacitive grating scale data-interface and the microprocessor, the RS485 interfaces being connected with the microprocessor.
Above technical scheme is further elaborated below：
Further, the interface conversion circuit is electric level interface change-over circuit, the level conversion for the data-interface and the RS485 interfaces of the capacitive grating scale.
Further, the converter also includes the data storage and digital encoder being connected respectively with the microprocessor.
Further, the converter is connected with a general power supply module, and the RS485 interfaces are connected with a universal data collection processing module, and the digital sampling and processing is used to gathering and handling the data signal after the converter conversion.
Further, the converter is connected with the electrostatic protection module and lightning protection module being connected with the RS485 interfaces.
Further, the capacitive grating scale includes crossbeam, is fixed on the first measuring staff of the crossbeam bottom, the second measuring staff being movably arranged on the crossbeam, and first measuring staff, the second measuring staff are used for the measured point for being fixed on crack both sides, and the crossbeam is provided with scale.
Further, the crossbeam is provided with the sensor of the distance for detecting first measuring staff and the second measuring staff, and the digital display screen for being connected and being fixed at the top of second measuring staff with the sensor.
The beneficial effects of the invention are as follows：By being connected in capacitive grating scale, a converter that capacitive grating scale data-interface is converted to universal sensor interface is set, capacitive grating scale is connected by RS485 interfaces communication with the outside world, user can easily change different sensors, reduce the production cost of production firm, and it has the advantages of data transmission efficiency is high, noise immunity is good, communication distance is big to the high reliability capacitive grating scale slit gauge of the use structure, can meet the needs of long-distance transmissions.Stability of the present invention is good, of good reliability, easy for operation, novel in design, practical, application easy to spread.
Brief description of the drawings
Fig. 1 is the structured flowchart of high reliability capacitive grating scale slit gauge embodiment of the present invention.
Fig. 2 is general supply circuit diagram.
Fig. 3 is capacitive grating scale power circuit schematic diagram.
Fig. 4 is interface conversion circuit structural representation.
Fig. 5 is microcontroller circuit structural representation.
Fig. 6 is the electrical block diagram of data storage.
Fig. 7 is the electrical block diagram of digital encoder.
Fig. 8 is the electrical block diagram of RS485 interfaces.
Fig. 9 is the electrical block diagram of electrostatic protection module and lightning-protection module.
Structural representation when Figure 10 is the installation of high reliability capacitive grating scale slit gauge.
Reference：
Capacitive grating scale 10；
Crossbeam 110；
First measuring staff 111；Second measuring staff 112；Digital display screen 113；
Rock wall 20；
Crack 21；
First measuring point 210；Second measuring point 220.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Technical scheme is described in detail below with reference to drawings and the specific embodiments, to become apparent from, intuitively understands invention essence of the invention.
As shown in figure 1, a kind of high reliability capacitive grating scale slit gauge of the present invention, including a capacitive grating scale 10, what is be connected with the data-interface of the capacitive grating scale 10 is used to the data-interface of capacitive grating scale 10 being converted into the converter of universal sensor interface；Specifically, the converter includes：Microprocessor, i.e. a single-chip microcomputer, the interface conversion circuit being connected respectively with the data-interface of capacitive grating scale 10 and the microprocessor, the RS485 interfaces being connected with the microprocessor.In this way, the data-interface of capacitive grating scale can be converted into RS485 interfaces, RS485 interfaces have the advantages of data transmission efficiency is high, the maximum data transmission rate is up to 10Mpbs, and its anti-common mode disturbances ability is strong, i.e., noise immunity is good, communication distance is big, can meet the needs of long-distance transmissions.Single-chip microcomputer is 5.3V low-power chip.Specifically, the interface conversion circuit is electric level interface change-over circuit, for the data-interface of the capacitive grating scale 10 and the level conversion of the RS485 interfaces and the data shaping to collection.As shown in Fig. 3 to Fig. 5 and Fig. 8, it can realize 1.5V to 5.3V level conversion, the input port 0 in the data access interface conversion circuit that capacitive grating scale 10 receives（MCLK IN）With 1（MDAT IN）, output port 2 (MDAT), output port 3 (MCLK) are connected with the pin 17 and pin 20 of single-chip microcomputer respectively；As shown in Figure 5, Figure 8, the receiving port 1 in RS485 interfaces（RXD）, sending port 4（TXD）It is connected respectively with the pin 13 and pin 14 of single-chip microcomputer, in addition to a d GPS locating module, and a repelling device.The d GPS locating module is easy to the scene in statistical analysis crack, the repelling device prevents the normal work of these bioturbation instruments to dispel the muroids such as mouse to measure the geographical position in crack.
Preferably, the converter also includes the data storage that is connected respectively with the microprocessor and for the digital encoder the data conversion of collection into electric signal, as shown in Figures 5 to 7, its data terminal（SDA）, clock signal input terminal（SCL）It is connected respectively with the pin 5 on single-chip microcomputer, pin 6.
Preferably, as shown in Figure 1 and Figure 2, the converter is connected with a general power supply module, the RS485 interfaces are connected with a universal data collection processing module, the digital sampling and processing is used to gathering and handling the data signal after the converter conversion, and general power supply module uses direct current supply.
Further, the converter is connected with the electrostatic protection module and lightning protection module being connected with the RS485 interfaces, as shown in figure 9, it is provided with 2 protective tubes F42, F43, and 3 protection pipe G41, G42, G43 for being used for overvoltage protection.
In more detail, the capacitive grating scale 10 includes a crossbeam 110, is fixed on the first measuring staff 111 of the bottom of crossbeam 110, the second measuring staff 112 being movably arranged on the crossbeam 110, first measuring staff 111, the second measuring staff 112 are used to be fixed on measured point, and the crossbeam 110 is provided with scale.Further, the crossbeam 110 is provided with the sensor of the distance for detecting the measuring staff 112 of the first measuring staff 111 and second, and is connected with the sensor and is fixed on the digital display screen 113 at the top of the second measuring staff 112.As shown in Figure 10, there is a crack 21 on rock wall 20, first measuring staff 111 of capacitive grating scale 10, the second measuring staff 112 are separately fixed at the first measuring point 210 of the both sides of crack 21, on the second measuring point 220, the original width in crack 21 is shown on digital display screen 113, during crack 21 deforms, its fracture width can be read at any time, it is simple, convenient.
In summary, high reliability capacitive grating scale slit gauge provided by the invention, it is connected with the converter that data-interface is converted into universal sensor interface in capacitive grating scale data-interface, realize level conversion, capacitive grating scale is connected by RS485 interfaces communication with the outside world, user can easily change different sensors, reduce the production cost of production firm, and it has the advantages of data transmission efficiency is high, noise immunity is good, communication distance is big to the high reliability capacitive grating scale slit gauge of the use structure, can meet the needs of long-distance transmissions.
It the foregoing is only the preferred embodiments of the present invention; it is not intended to limit the scope of the invention; every equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion; or other related technical areas are directly or indirectly used in, it is included within the scope of the present invention.
Claims (7)
1. a kind of high reliability capacitive grating scale slit gauge, it is characterised in that it includes a capacitive grating scale, and what is be connected with the data-interface of the capacitive grating scale is used to the data-interface of capacitive grating scale being converted into the converter of universal sensor interface；
The converter includes：Microprocessor, the interface conversion circuit being connected respectively with the capacitive grating scale data-interface and the microprocessor, the RS485 interfaces being connected with the microprocessor；Also include a d GPS locating module, and a repelling device.
2. high reliability capacitive grating scale slit gauge according to claim 1, it is characterised in that the interface conversion circuit is electric level interface change-over circuit, the level conversion for the data-interface and the RS485 interfaces of the capacitive grating scale.
3. high reliability capacitive grating scale slit gauge according to claim 1, it is characterised in that the converter also includes the data storage and digital encoder being connected respectively with the microprocessor.
4. high reliability capacitive grating scale slit gauge according to claim 1, it is characterized in that, the converter is connected with a general power supply module, the RS485 interfaces are connected with a universal data collection processing module, and the digital sampling and processing is used to gathering and handling the data signal after the converter conversion.
5. high reliability capacitive grating scale slit gauge according to claim 1, it is characterised in that the converter is connected with the electrostatic protection module and lightning protection module being connected with the RS485 interfaces.
6. high reliability capacitive grating scale slit gauge according to claim 1, it is characterized in that, the capacitive grating scale includes crossbeam, it is fixed on the first measuring staff of the crossbeam bottom, the second measuring staff being movably arranged on the crossbeam, first measuring staff, the second measuring staff are used for the measured point for being fixed on crack both sides, and the crossbeam is provided with scale.
7. high reliability capacitive grating scale slit gauge according to claim 6, it is characterized in that, the crossbeam is provided with the sensor of the distance for detecting first measuring staff and the second measuring staff, and the digital display screen for being connected and being fixed at the top of second measuring staff with the sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319233.7A CN107388954A (en) | 2016-05-16 | 2016-05-16 | High reliability capacitive grating scale slit gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319233.7A CN107388954A (en) | 2016-05-16 | 2016-05-16 | High reliability capacitive grating scale slit gauge |
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| Publication Number | Publication Date |
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| CN107388954A true CN107388954A (en) | 2017-11-24 |
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| CN201610319233.7A Pending CN107388954A (en) | 2016-05-16 | 2016-05-16 | High reliability capacitive grating scale slit gauge |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203132582U (en) * | 2013-02-05 | 2013-08-14 | 武汉理工大学 | Construction-safety multi-sensor automation monitoring system for close subway |
| US8922199B2 (en) * | 2012-07-26 | 2014-12-30 | Austin R&D, Inc. | Magnetic sensing device for fasteners |
| CN204479014U (en) * | 2015-04-02 | 2015-07-15 | 广州市吉华勘测股份有限公司 | Hold grid chi slit gauge |
| CN204924164U (en) * | 2015-09-17 | 2015-12-30 | 常州刘国钧高等职业技术学校 | Utilize measuring tool that holds bars chi and measure major diameter work piece |
-
2016
- 2016-05-16 CN CN201610319233.7A patent/CN107388954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8922199B2 (en) * | 2012-07-26 | 2014-12-30 | Austin R&D, Inc. | Magnetic sensing device for fasteners |
| CN203132582U (en) * | 2013-02-05 | 2013-08-14 | 武汉理工大学 | Construction-safety multi-sensor automation monitoring system for close subway |
| CN204479014U (en) * | 2015-04-02 | 2015-07-15 | 广州市吉华勘测股份有限公司 | Hold grid chi slit gauge |
| CN204924164U (en) * | 2015-09-17 | 2015-12-30 | 常州刘国钧高等职业技术学校 | Utilize measuring tool that holds bars chi and measure major diameter work piece |
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Application publication date: 20171124 |
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