CN207133128U - Ground coefficient K30 automatic tester - Google Patents

Abstract

A kind of coefficient of subgrade reactionK ₃₀Automatic tester.The coefficient of subgrade reaction being commonly usedK ₃₀Flat board load test instrument records rate of loading using artificial reading, manually reads record deflection, manual delineation load intensity and deflection relation curve, manually calculates coefficient of subgrade reactionK _30。A kind of ground coefficient K30 automatic tester, its composition include：Microprocessor chip（1）, microprocessor chip by I/O mouths respectively with ferroelectric RAM memory circuitry（2）, colorized lcd display model（3）, clock circuit（4）, usb circuit, key circuit（5）, sensor interface circuitry（6）And temperature measurement circuit（7）And power circuit（8）Connection, sensor interface circuitry include displacement transducer and pressure sensor pressure sensor.The utility model is applied to high-speed railway subgrade coefficient of subgrade reactionK ₃₀Test.

Description

Coefficient of subgrade reactionK30Automatic tester

Technical field：

It the utility model is related to a kind of high-speed railway subgrade coefficient of subgrade reactionK ₃₀Test.

Background technology：

Coefficient of subgrade reactionK ₃₀It is one of leading indicator of high-speed railway control roadbed filling compaction quality,K ₃₀Flat board load is surveyed Examination instrument is used to detect roadbed coefficient of subgrade reactionK ₃₀.The coefficient of subgrade reaction being commonly usedK ₃₀Flat board load test instrument uses people's part work and part study Take record rate of loading, manually read record deflection, manual delineation load intensity and deflection relation curve, artificial calculating ground Base system numberK ₃₀, on the one hand, because human factor causes detection error, influence construction quality；On the other hand, because manual operation is led Cause operating efficiency low, influence construction speed.

The content of the invention：

The purpose of this utility model is to provide a kind of high-speed railway subgrade coefficient of subgrade reactionK ₃₀Test.

Above-mentioned purpose is realized by following technical scheme：

A kind of ground coefficient K30 automatic tester, its composition include：Microprocessor chip, described microprocessor chip It is electric with ferroelectric RAM memory circuitry, colorized lcd display model, clock circuit, usb circuit, button respectively by I/O mouths Road, sensor interface circuitry connect with temperature measurement circuit with power circuit, and described sensor interface circuitry includes displacement transducer And pressure sensor.

Described ground coefficient K30 automatic tester, the working power of described power circuit is DC12V, and power consumption is less than 15W。

Described ground coefficient K30 automatic tester, described microprocessor chip are LinkitOne series microprocessors Module.

Described ground coefficient K30 automatic tester, the d. c. voltage signal of described pressure sensor output is load Strength signal inputs, and signal amplitude scope is 0-5V, and in range ability, rate of loading signal measurement precision is 0.001 MPa, The d. c. voltage signal of described displacement transducer output is deflection signal, and signal amplitude scope is 0-5V, in range ability Interior, deflection signal measurement precision is 0.01mm.

The beneficial effects of the utility model：

1st, the utility model can read storage load intensity signal and deflection signal automatically；It is strong according to the load of storage Signal and deflection signal are spent, it is automatic to draw load intensity and deflection relation curve；According to the load intensity of description and sinking Magnitude relation curve calculates coefficient of subgrade reaction automaticallyK ₃₀, on the one hand, the influence of human factor is reduced, improves accuracy of detection；The opposing party Face, database preparation, improve operating efficiency.

, the utility model using Large Copacity ferroelectric RAM storage collection signal data and testing result, papery can be avoided to remember Existing for record easily along it is bad, lost the deficiencies of.

, the utility model signal data will directly be gathered by microprocessor module LinkitOne V1.0 USB interface PC is copied to testing result, realizes collecting for collection signal data and testing result, and can also utilize PC to adopting Collection signal data is further analyzed processing.

, the utility model signal data will directly be gathered by microprocessor module LinkitOne V1.0 blue tooth interface Notebook computer, or mobile phone terminal are transferred to testing result, is backed up at any time.

, the utility model by microprocessor module LinkitOne V1.0 GPRS interfaces and GPS interface, will adopt in real time Collect signal data, testing result and test position information transfer to server, the monitoring to job site can be realized, improve pipe Managerial skills of the reason department to job site.

, the utility model man-machine interaction is realized using colorized lcd display model and keyboard, friendly interface is simple to operate, Intuitive and convenient.

, the utility model there is the characteristics of measurement accuracy is high, stability is good, strong antijamming capability.

Brief description of the drawings：

Accompanying drawing 1 is theory diagram of the present utility model.

Accompanying drawing 2 is microprocessor portion circuit diagram.

Accompanying drawing 3 is power unit circuit diagram.

Accompanying drawing 4 is ferroelectric memory partial circuit.

Accompanying drawing 5 is Color Liquid Crystal Display partial circuit.

Accompanying drawing 6 is clock partial circuit.

Accompanying drawing 7 is Temperature measuring section parallel circuit.

Accompanying drawing 8 is sensor interface part parallel circuit.

Accompanying drawing 9 is button and indicator light circuit.

Embodiment：

Embodiment 1：

A kind of ground coefficient K30 automatic tester, its composition include：Microprocessor chip 1, described microprocessor chip By I/O mouths respectively with ferroelectric RAM memory circuitry 2（FM24V20）, colorized lcd display model 3（DMT64480S057_ 03WNZ）, clock circuit 4（DS1302）, usb circuit, key circuit 5, sensor interface circuitry 6 and temperature measurement circuit 7 and electricity Source circuit 8 connects, and described sensor interface circuitry includes displacement transducer（IL-S065）With pressure sensor pressure sensing Device.

Embodiment 2：

Ground coefficient K30 automatic tester according to embodiment 1, the working power of described power circuit are DC12V, power consumption are less than 15W.

Embodiment 3：

Ground coefficient K30 automatic tester according to embodiment 1 or 2, described microprocessor chip are LinkitOne series microprocessor modules（LinkitOne V1.0）.

Embodiment 4：

According to the ground coefficient K30 automatic tester described in embodiment 1 or 2 or 3, described pressure sensor exports straight Stream voltage signal is the input of load intensity signal, and signal amplitude scope is 0-5V, in range ability, rate of loading signal measurement Precision is 0.001 MPa, and the d. c. voltage signal of described displacement transducer output is deflection signal, and signal amplitude scope is 0-5V, in range ability, deflection signal measurement precision is 0.01mm.

Embodiment 5：

Operation principle：Using diameter 300mm, thick 25mm loading plate, to loading plate multistage loadings, record under every grade of load The size of load intensity and deflection, it is fitted according to load intensity and deflection data using quadratic equation, describes load intensity With deflection relation curve, load intensity corresponding to deflection a reference value is recycled to calculate coefficient of subgrade reaction with deflection a reference valueK ₃₀。

The course of work：Coefficient of subgrade reactionK ₃₀The course of work of intelligent test system mainly include system installation, load test and Three parts such as data processing, are illustrated separately below：

1. system is installed

（1）Test surfaces should carry out smooth, swept off and loosened the soil with hairbrush, and test surfaces are made into level；

（2）Loading plate is positioned on test surfaces, loading plate should completely attach to ground, can lay a thickness about if necessary 2mm ~ 3mm drying sand or gypsum putty, while adjust carrying plate level using air level on loading plate or spirit level.

（3）Counterforce device is placed in into bearing part to be placed in above loading plate, and braked.The strong point of counterforce device 1m is cannot be less than with the distance of loading plate outer rim；

（4）Jack is positioned on the loading plate below counterforce device, using extension bar and adjusting screw, makes jack Top ball hinge is close on counterforce device loading plate position.

（5）Bridge is surveyed in placement, is surveyed bridge bearing seat and is not less than 1m with loading plate outer rim, the distance of counterforce device supporting-point.Displacement Sensor should keep equidistant along loading plate periphery etc. point arrangement, and with loading plate center.

Load test

（1）Preload

Loading plate preload for diameter 300mm is 0.04MPa, removal after preload 30s, is then waited again After 30s, deflection data are read as initial reading.

（2）Multistage loadings

With 0.04MPa increment, multistage loadings.Often increase one-level load, 1min no more than this grade load of settling amount produces Raw settling amount 1% when, read load intensity and deflection reading, then increase next stage load, every grade of load it is stable when Between must not be less than 3 minutes.When the load higher than original payload values is applied with test, the load should be kept, and record storage should Deflection reading under load and the load.

（3）Reach following condition for the moment, test can terminate

1. total deflection exceedes defined a reference value（1.25mm）, and load at least 5 grades of series；

2. load intensity is more than 1.3 times that design standard corresponds to payload values, and loads at least 5 grades of series；

3. load intensity reaches ground yield point.

Data analysis

（1）Load intensity and deflection relation curve are drawn out according to test result, are fitted using quadratic equation, to improve Precision；

（2）Using load intensity with drawing deflection a reference value in deflection relation curve（1.25mm）Corresponding load is strong Degree, and coefficient of subgrade reaction is calculated as follows：

（1）

In formula,For deflection a reference value（m）；For with deflection a reference valueCorresponding load intensity （MPa）；

Embodiment 6：

The coefficient of subgrade reaction of accompanying drawing 1K ₃₀Automatic tester design theory diagram.Fig. 1 power circuits provide for automatic tester Different grades of direct-current working volts.Fig. 1 ferroelectric memorys under control of the microprocessor, storage collection signal data, gather After end, CPU describes load intensity signal and deflection signal relation curve using the signal data of storage, and then utilizes curve Calculate coefficient of subgrade reactionK ₃₀, and result of calculation is stored in ferroelectric memory.Fig. 1 buttons and colorized lcd display model are in microprocessor Under device control, man-machine interaction is realized.Under micro-processor control, record detects coefficient of subgrade reaction to Fig. 1 clocksK ₃₀Temporal information.Figure The temperature of 1 temperature measurement circuit detection detection environment.Fig. 1 sensor interface circuitries connect pressure sensor and displacement transducer, in CPU Control under, load intensity signal and deflection signal.Meanwhile the GPS module that microprocessor carries is under micro-processor control, Record detection coefficient of subgrade reactionK ₃₀Address information.The GPRS module that microprocessor carries under micro-processor control, will can adopt The signal data and testing result of collection, radio to relevant departments.The USB interface that microprocessor carries controls in microprocessor Under, easily copy the signal data and testing result of collection.The blue tooth interface that microprocessor carries under micro-processor control, The signal data of collection and testing result easily can be transferred to the terminals such as notebook, mobile phone.

The microprocessor portion circuit diagram of accompanying drawing 2.Microprocessor portion is described coefficient of subgrade reactionK ₃₀The core of automatic tester Center portion point.Fig. 2 U1 9 pins are connected with Fig. 8 resistance R9, electric capacity C24, resistance R8 of 10 pins with Fig. 8, electric capacity C22 phases Even, 11 pins are connected with Fig. 8 resistance R7, electric capacity C20.Fig. 2 U1 13 pins and Fig. 4 U2 5 pins and resistance R6 phases Even, Fig. 2 14 pins are connected with Fig. 4 U2 6 pins and resistance R5.Fig. 2 U1 15,16 pins respectively with Fig. 5 U3 10, 9 pins are connected.5,6,7 pins of Fig. 2 U1 17,18,19 pins respectively with Fig. 6 U4 are connected.Fig. 2 U1 pin of evil 20 and Fig. 7 J-T 2 pins, resistance R10 is connected.Fig. 2 U1 22 pins are connected with Fig. 9 luminous tube LED2, and the 23 of Fig. 2 U1 draws Pin is connected with Fig. 9 J-Key 1 pin, resistance R12, Fig. 2 U1 24 pins and Fig. 9 J-Key 2 pins, resistance R13 phases Even, Fig. 2 U1 25 pins are connected with Fig. 9 J-Key 3 pins, resistance R14, Fig. 2 U1 26 pins and the 4 of Fig. 9 J-Key Pin, resistance R15 are connected, and Fig. 2 U1 27 pins are connected with Fig. 9 J-Key 5 pins, resistance R16, Fig. 2 U1 28 pins 6 pins, resistance R17 with Fig. 9 J-Key are connected.Realize microprocessor to Fig. 4 ferroelectric memorys, colored liquid by above-mentioned connection The control of each several part such as brilliant display module, clock, temperature survey, load intensity signal and displacement signal acquisition, button.

The power unit circuit diagram of accompanying drawing 3.Fig. 3 J_Power connect outside DC12V power supplys, convert to obtain through E1, E2, E3 The different grades of voltage such as 4.2V, 3.3V, 24V, wherein 4.2V output voltages provide operating voltage, 3.3V for Fig. 1 microprocessors Output voltage is that Fig. 4 clock chip, Fig. 5 MAX3232, Fig. 6 DS1302, Fig. 7 DS18B02, Fig. 9 pull-up resistor carry For working power, 24V output voltages provide working power for Fig. 8 pressure sensor and displacement transducer.

The ferroelectric memory partial circuit of accompanying drawing 4.Fig. 4 U2（FM24V10）It is connected in the form of iic bus with microprocessor.

Fig. 5 Color Liquid Crystal Display partial circuits, the U3 in Fig. 5（MAX3232）It is connected by serial communication with microprocessor, The conversion of Transistor-Transistor Logic level and RS232 level is realized, U3 7 pins are connected with J-LCD 5,6 pins, U3 8 pins and J-LCD's 4 pins are connected, and realize the control to color liquid crystal.

Fig. 6 clock partial circuits, Fig. 6 U4（DS1302）It is connected in the form of spi bus with microprocessor.

Fig. 7 Temperature measuring section parallel circuits, Fig. 7 DS18B20 temperature sensors are connected in the form of monobus with microprocessor.

Fig. 8 sensor interfaces part parallel circuit, Fig. 8 J-L1 access first displacement transducer signal, pass through R7 and C20 The low pass filter of composition and 11 pins of microprocessor（ADC2）AD conversion part is connected.Fig. 8 J-L2 accesses second position Displacement sensor signal, 10 pins by the R8 and C22 low pass filters formed and microprocessor（ADC1）AD conversion part phase Even.Fig. 8 J-P cut-in pressures sensor signal, 9 pins by the R9 and C24 low pass filters formed and microprocessor （ADC0）AD conversion part is connected.

Fig. 9 buttons and indicator light circuit, Fig. 9 buttons are directly connected with the I/O interfaces of microprocessor, and Color Liquid Crystal Display Device realizes man-machine interaction together.Fig. 9 indicator lamp is directly connected with the I/O interfaces of microprocessor.

Claims (1)

1. a kind of ground coefficient K30 automatic tester, its composition includes：Microprocessor chip, it is characterized in that：Described microprocessor Device chip by I/O mouths respectively with ferroelectric RAM memory circuitry, colorized lcd display model, clock circuit, usb circuit, Key circuit, sensor interface circuitry connect with temperature measurement circuit with power circuit, and described sensor interface circuitry includes displacement Sensor and pressure sensor, the DS1302 chips of clock circuit are connected in the form of spi bus with microprocessor chip, thermometric electricity The DS18B20 temperature sensors on road are connected in the form of monobus with microprocessor chip；

The working power of described power circuit is DC12V, and power consumption is less than 15W；

Described microprocessor chip is LinkitOne series microprocessor modules；

The d. c. voltage signal of described pressure sensor output is the input of load intensity signal, and signal amplitude scope is 0-5V, In range ability, rate of loading signal measurement precision is 0.001 MPa, and the DC voltage of described displacement transducer output is believed Number it is deflection signal, signal amplitude scope is 0-5V, and in range ability, deflection signal measurement precision is 0.01mm.