CN102288498A - Impact and explosion analog testing device for geotechnical centrifuge model - Google Patents
Impact and explosion analog testing device for geotechnical centrifuge model Download PDFInfo
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- CN102288498A CN102288498A CN2011101167821A CN201110116782A CN102288498A CN 102288498 A CN102288498 A CN 102288498A CN 2011101167821 A CN2011101167821 A CN 2011101167821A CN 201110116782 A CN201110116782 A CN 201110116782A CN 102288498 A CN102288498 A CN 102288498A
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Abstract
The invention provides an impact and explosion analog testing device for a geotechnical centrifuge model, which comprises a testing control subassembly and a testing subassembly. The testing control subassembly comprises a control computer, a data collecting computer, an optical fiber transceiver I, an optical fiber transceiver II, a detonation control circuit and an impact control circuit; the control computer is connected with the optical fiber transceiver I; the optical fiber transceiver I is connected with the optical fiber transceiver II; the optical fiber transceiver II is connected with the data collecting computer; the data collecting computer is connected with the denotation control circuit and the impact control circuit; the denotation control circuit is connected with the explosion testing subassembly; and the impact control circuit is connected with the impact testing subassembly. By using the testing device provided by the invention, the automatic control, the data collection, the data analysis and the test loading of impact and explosion analog tests of the geotechnical centrifuge model can be effectively achieved. The operation is simple and convenient, and the running is stable and reliable. By using the testing device provided by the invention, an explosion analog test can be carried out within 0-200g, and an impact analog test can be carried out within 0-75g.
Description
Technical field
The invention belongs to geotechnological mechanical model test unit technical field, specifically disclose a kind of geotechnical centrifuge model bump blast analogue test unit.Device of the present invention is mainly used in carries out the dynamic response characteristic experimental study of geotechnological model under blast load and bump stroke effect under the centrifugal field.
Background technology
Prior art adopts two kinds of means to carry out to the destruction test research of geotechnological scale model is main: the one, and landfill explosive and under centrifugal field, utilize cap sensitive explosive in geotechnological model, the various sensors of landfill in geotechnological model, in the response signal of explosive charge moment synchronous high-speed collection various kinds of sensors, utilize these signals to provide data refer for correlative study; The 2nd, the gas big gun is installed on geotechnical centrifuge, under centrifugal field, utilize gas big gun emission bullet to clash into geotechnological model with different speed, and synchronous high-speed gathers each position impact response signal of geotechnological model, utilizes response signal to provide the data support for correlative study.
Owing to do not see the report of the device that can be used to finish geotechnological scale model destruction test, domestic correlative study unit is difficult to carry out the geotechnological model centrifugal test under blast and the bump environment.Press for a kind of device that is used for the test of geotechnical centrifuge model bump blast analogue of development.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of geotechnical centrifuge model bump blast analogue test unit.
Geotechnical centrifuge model bump blast analogue test unit of the present invention is characterized in that described test unit comprises observing and controlling assembly and test assembly two parts.
The observing and controlling assembly contains control computer, data acquisition computer, fiber optical transceiver I, fiber optical transceiver II, ignites control circuit, bump control circuit, sensor signal conditioning device, sensor array; The network interface of control computer is connected by the network interface of netting twine with the fiber optical transceiver I, and the light mouth of fiber optical transceiver I is connected with the light mouth of fiber optical transceiver II by optical fiber, and the network interface of fiber optical transceiver II is connected with the Ethernet interface of data acquisition computer; Data acquisition computer is connected with ignition control circuit, bump control circuit, sensor signal conditioning device; Igniting control circuit is connected with the explosive test assembly; The bump control circuit is connected with the impact test assembly; The sensor signal conditioning device is connected with sensor array.
Test assembly contains explosive test assembly and impact test assembly.The explosive test assembly contains detonator assembly, explosive train component, explosive test model casing; Ignition control circuit in the observing and controlling assembly is connected with detonator assembly, and detonator assembly is connected with explosive train component; Sensor array in explosive train component, detonator assembly and the observing and controlling assembly is installed in the explosive test model casing.The impact test assembly contains Nitrogen filling vehicle, inflation solenoid valve, discharges solenoid valve, bullet assembly, gas big gun, laser velocimeter parts, big gun pressure sensor, gas circuit, impact test model casing; Nitrogen filling vehicle is connected with the inflation solenoid valve by gas circuit; The inflation solenoid valve links to each other, inflates solenoid valve by gas circuit and gas big gun and is connected with bump control circuit in the observing and controlling assembly; Discharging solenoid valve is connected with bump control circuit in the observing and controlling assembly; The gas big gun by gas circuit with discharge that solenoid valve links to each other, the gas big gun is connected with bullet assembly, laser velocimeter parts, big gun pressure sensor; The gas big gun is installed on the impact test model casing, and the sensor array in the observing and controlling assembly is installed in the impact test model casing.
Control computer among the present invention is a PC, and the observing and controlling client software is installed in this computing machine.Described data acquisition computer is set up based on the PXI bus, contains Zero greeve controller, internal memory, FLASH electronic hard disc, synchronous data collection card, asynchronous data collection card.Zero greeve controller contains CPU and Ethernet interface.Zero greeve controller is connected with internal memory, FLASH electronic hard disc.The core bus that synchronous data collection card, asynchronous data collection cartoon are crossed on the PXI cabinet is connected with Zero greeve controller.The observing and controlling server software is installed in the data acquisition computer.Control computer and data acquisition computer adopt optical fiber to carry out network communication.
Ignition control circuit among the present invention is provided with the solid-state relay that is used for the detonating primer assembly, and solid-state relay is connected with the data collecting card output terminal.Described bump control circuit is provided with the solid-state relay that is used to control inflation solenoid valve, release electromagnetic valve switch.
Inflation solenoid valve among the present invention, release solenoid valve are high-pressure solenoid valve.
Gas big gun among the present invention contains main gas tank, accessory air-space, piston valve body, gun tube; Fixedly connected between the major and minor air chamber, main gas tank has air admission hole and is used to install the measured hole of gas big gun pressure transducer main gas tank pressure; Accessory air-space inner chamber front end has an air admission hole, and two pores are arranged on the rear end cap, is respectively applied for air inlet and exhaust.
The impact test model casing is a circular configuration among the present invention, and end flanges is connected with bracketplant and locatees under the impact test model casing, and upper flanges is connected with gas big gun bracing frame.
The principle of work of geotechnical centrifuge model bump blast analogue test unit of the present invention is: control computer places the remote testing hall as Terminal Server Client, data acquisition computer as server and sensor signal conditioning device, ignite control circuit, bump control circuit and be installed near the hydro-extractor pivoted arm central authorities, like this data acquisition computer and sensor signal conditioning device, to ignite the centrifugal force that control circuit, bump control circuit be subjected in hydro-extractor rotation process less, guarantees the reliable and stable operation of data acquisition computer.The hard disk of data acquisition computer adopts the FLASH electronic hard disc, compares with common hard disk, and interface is more reliable, common hard-disk interface cable may because of centrifugal action by the pine that shakes, cause data acquisition computer to crash, bring massive losses to test.Control computer and data acquisition computer carry out telecommunication by optical fiber, form the network TT﹠C system of Client.Control computer sends the observing and controlling order by the observing and controlling client software to data acquisition computer, observing and controlling server software in the data acquisition computer is decoded according to the observing and controlling order that receives, and the corresponding TT﹠C task of execution, after complete, signal waveform, the observing and controlling state parameter gathered are sent in the control computer, and on the FLASH hard disk, back up test figure.Control computer is responsible for storage, analysis, derivation, printing of signal etc.
In the blast analogue test, in the explosive test model casing, install geotechnological model, and in geotechnological model landfill detonator assembly, explosive train component and sensor array, the type of explosive train component and detonator assembly is determined according to the needs of model test.Get electric control element by the solid-state relay of igniting in the control circuit as detonator assembly, Transistor-Transistor Logic level control is adopted in the input of solid-state relay, and output dc voltage acts on detonator assembly.When centrifugal basket arrives the g value of test determination, control computer is sent and is ignited order, data acquisition computer obtains after the order digital output channel output two-way Transistor-Transistor Logic level signal by the synchronous data collection card and drives solid-state relay in the blast control circuit, detonator assembly gets electric back fired charge assembly, the simulating signal of sensor array output is simultaneously gathered with the sample frequency synchronous high-speed of 1MHz, acquisition time is 200ms, after acquisition tasks is finished, test figure backups in the FLASH hard disk, and simultaneously data acquisition computer utilizes the SOCKET agreement to send the waveform of each channel analog signal and show to control computer by network.Can be simultaneously during test or timesharing ignite the two-way detonator assembly, depend on the observing and controlling order that control computer sends.The sampling duration of 200ms can be guaranteed the complete blast impulse response signal that collects geotechnological model of data acquisition computer.
The bump simulation test in, in the impact test model casing, install geotechnological model, and in geotechnological model the landfill sensor array.The two-way numeral output channel of the synchronous data collection card in the data acquisition computer links to each other with inflation solenoid valve, release solenoid valve control circuit respectively, inflation solenoid valve, release solenoid valve adopt 24 volts of DC power supply, and the bump control circuit utilizes solid-state relay control inflation solenoid valve and discharges the electromagnetic valve switch action.Before the test, the bullet assembly is installed in the gas gun tube, and is the power supply of laser velocimeter parts, the laser velocimeter circuit is connected with the two-way digital input channel of synchronous data collection card, and the output terminal of laser velocimeter parts is connected with the laser velocimeter circuit input end.Gas big gun pressure transducer delivery outlet is linked to each other with the pressure signal conditioning device, and the current signal that the pressure signal conditioning device is exported gas big gun pressure transducer is converted to voltage signal and is connected with the input channel of asynchronous data collection card.During on-test, control computer sends gas big gun inflation order, the digital output channel that data acquisition computer is obtained control synchronous data collection card after the order is exported corresponding level and is driven solid-state relay action in the bump control circuit, to inflate solenoid valve opens, discharge closed electromagnetic valve, utilize Nitrogen filling vehicle to charge into nitrogen by gas circuit for the gas big gun this moment, asynchronous collecting card in the data acquisition computer turns back to gas big gun force value in the control computer in real time and shows simultaneously, when gas big gun pressure reaches setting value, control computer sends closes the order of inflation solenoid valve, and Nitrogen filling vehicle stops to inflate to the gas big gun.Rotate hydro-extractor, when centrifugal basket arrived test determination g value, control computer sent emission bullet component order, then discharged solenoid valve and opened, and gas big gun emission bullet assembly clashes into geotechnological model.The bullet assembly blocks the two-way laser in the laser velocimeter parts successively when moving in the gas gun tube, laser velocimeter parts output terminal produces the two-way narrow pulse signal, two-way narrow pulse signal and sensor array simulating signal are with 1MHz sample frequency synchronous acquisition, gather duration and be set to 200ms to 1s, after acquisition tasks is finished, test figure backups in the FLASH hard disk, and simultaneously data acquisition computer utilizes the SOCKET agreement to send waveform, the two-way narrow pulse waveform of each channel analog signal and show to control computer by network.The spacing of two-way LASER Discharge Tube can be measured the launch velocity degree of bullet assembly in mistiming that occurs by the two-way narrow pulse waveform on control computer and the laser velocimeter parts.The sampling duration of 1s can be guaranteed the impact response signal of the geotechnological model of the complete collection of data acquisition computer under the high g value.
Geotechnical centrifuge model bump blast analogue test unit of the present invention can realize effectively that geotechnological centrifugal model clashes into the automatic control of blast analogue test, data acquisition, data analysis, test loading etc.Test unit of the present invention is simple to operation, stable and reliable operation.Through laboratory proofing, geotechnical centrifuge model bump blast analogue test unit of the present invention can carry out the blast analogue test in 0g ~ 200g, can clash into simulation test in 0g ~ 75g.
Description of drawings
Fig. 1 is a system global structure block diagram of the present invention.
Fig. 2 is the data acquisition computer composition frame chart among the present invention.
Fig. 3 is the control signal and the be connected block diagram of sensor signal with capture card during the blast analogue among the present invention is tested.
Fig. 4 is the control signal and the be connected block diagram of sensor signal with capture card in the bump simulation test among the present invention.
Fig. 5 is gas big gun among the present invention and gas circuit, impact test mold box configuration synoptic diagram.
Fig. 6 is the model blast analogue test observing and controlling process flow diagram among the present invention.
Fig. 7 is the model bump simulation test observing and controlling process flow diagram among the present invention.
Among the figure, 1. gas big gun 2. big gun pressure sensors 3. inflation solenoid valves 4. high-pressure hoses 5. gas big gun bracing frames 6. laser velocimeter parts 7. impact test model casings 8. Nitrogen filling vehicles 9. discharge solenoid valve.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described in detail.
Described test unit comprises observing and controlling assembly and test assembly two parts, as shown in Figure 1.
The observing and controlling assembly contains control computer, data acquisition computer, fiber optical transceiver I, fiber optical transceiver II, ignites control circuit, bump control circuit, sensor signal conditioning device, sensor array; The network interface of control computer is connected by the network interface of netting twine with the fiber optical transceiver I, and the light mouth of fiber optical transceiver I is connected with the light mouth of fiber optical transceiver II by optical fiber, and the network interface of fiber optical transceiver II is connected with the Ethernet interface of data acquisition computer.Data acquisition computer is connected with bump control circuit, ignition control circuit, sensor signal conditioning device.Igniting control circuit is connected with the explosive test assembly.The bump control circuit is connected with the impact test assembly.The sensor signal conditioning device is connected with sensor array.
Test assembly contains explosive test assembly and impact test assembly.
The explosive test assembly contains detonator assembly, explosive train component, explosive test model casing; Ignition control circuit in the observing and controlling assembly is connected with detonator assembly, and detonator assembly is connected with explosive train component; Sensor array in explosive train component, detonator assembly and the observing and controlling assembly is installed in the explosive test model casing.
The impact test assembly contains Nitrogen filling vehicle, inflation solenoid valve, discharges solenoid valve, bullet assembly, gas big gun, laser velocimeter parts, big gun pressure sensor, gas circuit, impact test model casing; Nitrogen filling vehicle is connected with the inflation solenoid valve by gas circuit; The inflation solenoid valve links to each other, inflates solenoid valve by gas circuit and gas big gun and is connected with bump control circuit in the observing and controlling assembly; Discharging solenoid valve is connected with bump control circuit in the observing and controlling assembly; The gas big gun by gas circuit with discharge that solenoid valve links to each other, the gas big gun is connected with bullet assembly, laser velocimeter parts, big gun pressure sensor; The gas big gun is installed on the impact test model casing, and the sensor array in the observing and controlling assembly is installed in the impact test model casing.
Control computer among Fig. 1 can be any desktop computer, interior dress WINDOWS XP operating system, and the observing and controlling client software is installed in this computing machine.
Fiber optical transceiver kind among Fig. 1 is not limit, and the adaptive network interface of 10M/100M/1000Mbps is provided usually, and what adopt in the practical application is the network of the HTB-1110S fiber optical transceiver establishment 1000Mbps of NetLINK company production.
Data acquisition computer among Fig. 1 is set up based on the PXI bus, and its cabinet adopts NI PXI-1042Q cabinet.
Sensor signal conditioning device among Fig. 1 should be according to type of sensor configuration in the sensor array.
Laser velocimeter circuit, pressure signal conditioning device among ignition control circuit among Fig. 1, bump control circuit and Fig. 4 are integrated in the circuit board.
Detonator assembly and explosive train component classification in the explosive test assembly among Fig. 1 are not limit, and determine according to the needs of model test.Blast model test case is general geotechnical centrifuge model test case.
Nitrogen filling vehicle type in the impact test assembly among Fig. 1 is not limit, and determines according to the test needs.The CDZ-35Y1 type Nitrogen filling vehicle of selecting the prosperous woods robotization of Wuxi City Science and Technology Ltd. to produce in the practical application, its highest charge pressure is 35MPa; Inflation solenoid valve in the impact test assembly among Fig. 1, to discharge solenoid valve be the K0512410 type high-pressure solenoid valve that German Montiert schutzart company produces, and adopts 24V direct current supply; Gas gun tube bore in the impact test assembly among Fig. 1 is Ф 10mm, the long 200mm of gun tube, and big gun is pressed can bear 35MPa; Bullet module diameter in the impact test assembly among Fig. 1 is Ф 10mm, and long 15mm is shaped as right cylinder; Laser velocimeter parts in the impact test assembly among Fig. 1 are made up of a pair of LASER Discharge Tube and a pair of reception photosensitive tube, mounting bracket, wherein LASER Discharge Tube is the FU650AD5 type laser tube that Shenzhen rich Zhe Science and Technology Ltd. produces, its laser output wavelength 650nm, output power 5mW, adopt 5V direct current supply, working current 10mA, facular model are point-like, light diameter 2mm, overall dimensions Φ 5mm; Receive the 2CU2A type silicon photodiode that photosensitive tube adopts Hangzhou Zhong Te Electronics Co., Ltd. to produce, operating voltage is direct current 5V, peak wavelength is 880nm, response time 10ns, two pairs of LASER Discharge Tube are parallel, at a distance of 150mm, receive photosensitive tube and aim at LASER Discharge Tube, LASER Discharge Tube is fixed on the gas gun tube by mounting bracket with the reception photosensitive tube." blocking " method of employing is measured the launch velocity degree of bullet assembly, and when gas big gun emission bullet assembly, the bullet assembly blocks the two-way laser optical path successively, produces the two-way narrow pulse signal.The measurable bullet component speed of this laser velocimeter parts is 10m/s ~ 600m/s.Impact test model casing in the impact test assembly among Fig. 1 is special model casing, has arranged gas big gun bracing frame and air-channel system on the case.
Fig. 2 is the data acquisition computer composition frame chart among the present invention.Data acquisition computer is set up based on the PXI bus, and cabinet is NI PXI-1042Q; Zero greeve controller is NI PXI-8031, comprises a 1000Mbps Ethernet interface; 4G DDR2 internal memory, 15GB FLASH electronic hard disc; Four NI PXI-6133 synchronous data collection cards, every card contains eight analog input channels and eight digital input and output programmable channel, and the analog channel sample frequency reaches as high as 2.5MHz; A NI PXI-6221 asynchronous data collection card contains 16 analog input channels, and sample frequency is 250kHz.The data acquisition computer of being made up of Fig. 2 comprises 32 synchronously simulating input channels, 30 two-digit input and output programmable channel, 16 asynchronous analog input channels.32 analog input channels are realized the multichannel high-speed synchronous collection of many cards by the RTSI bus.
Fig. 3 is the control signal and the be connected block diagram of sensor signal with capture card during the blast analogue among the present invention is tested.Any two channel arrangement in four NI PXI-6133 synchronous data collection cards among Fig. 2 in eight digital input and output programmable channel of the data collecting card of next-door neighbour's Zero greeve controller are that output channel output Transistor-Transistor Logic level drives the solid-state relay of igniting in the control circuit, solid-state relay control detonator assembly powers on, and realizes two-way detonator assembly action control; Sensor array among Fig. 3 in the explosive test model casing is connected by the analog input acquisition channel of sensor signal conditioning device with four PXI-6133 synchronous data collection cards, realizes the high-speed synchronous collection of 32 passages geotechnique model blast impulse response signal.
Fig. 4 is the control signal and the be connected block diagram of sensor signal with capture card in the bump simulation test among the present invention.One, 2 two channel arrangement in four NI PXI-6133 synchronous data collection cards among Fig. 2 in eight digital input and output programmable channel of the data collecting card of next-door neighbour's Zero greeve controller is that output channel output Transistor-Transistor Logic level drives the solid-state relay in the bump control circuit, solid-state relay control inflation solenoid valve, the action of release electromagnetic valve switch, the inflation and the deflation course of realization gas big gun; Three, 4 two channel arrangement are input channel, are used to gather the two-way laser narrow pulse signal of laser velocimeter circuit output; Sensor array in the impact test model casing links to each other with analog input channel with four NI PXI-6133 synchronous data collection cards by the corresponding sensor-signal conditioner, realizes the collection of the geotechnological model impact response of 32 passages signal.First analog input channel of asynchronous collecting card NI PXI-6221 links to each other with gas big gun pressure sensor signal conditioning device among Fig. 2, gathers gas big gun internal pressure with the sample frequency of 2kHz.
Fig. 5 is gas big gun among the present invention and gas circuit, impact test mold box configuration synoptic diagram.The gas big gun contains main gas tank among Fig. 5, accessory air-space, gun tube, and with the big gun pressure sensor, high-pressure solenoid valve, gas circuit connects and composes gas big gun operation control part part, wherein, high-pressure solenoid valve comprises inflation solenoid valve 3 and discharges solenoid valve 9, the top of impact test model casing 7 is provided with gas big gun bracing frame 5, top at gas big gun bracing frame 5 is equipped with gas big gun 1, inflation solenoid valve 3 and release solenoid valve 9, be set with big gun pressure sensor 2 in the gas big gun 1, on the gun tube of gas big gun 1, be fixed with laser velocimeter parts 6, one end of high-pressure hose 4 is connected with inflation solenoid valve 3, and the other end is connected with Nitrogen filling vehicle 8.Gas big gun 1 is the main topworks of function, its principle of work is: gases at high pressure enter accessory air-space through inflation solenoid valve 3, pressure in the accessory air-space constantly rises, make valve body move right and be pressed on the inlet of power valve, simultaneously, make one-way valve opens because pressure rises, gases at high pressure enter main gas tank from accessory air-space through retaining valve, and gas injection is closed inflation solenoid valve 3 after reaching pressure.Send action is opened fast by release solenoid valve 9 and is begun.After release solenoid valve 9 was opened, the gases at high pressure in the accessory air-space were discharged rapidly, and the pressure reduction at piston two ends promotes the rapid counter motion of valve body, and the gas in the plenum chamber enters gun tube immediately, promoted the bullet assembly and moved along gun tube, and the bullet assembly promptly is launched away.Impact test model casing 7 is the circular mode molding box, adopts welded structure, and 7 times end flanges of impact test model casing and hydro-extractor bracketplant link and locatees, and upper flanges links to each other with gas big gun bracing frame 5.Inflation solenoid valve 3 and discharge the K0512410 type high-pressure solenoid valve that solenoid valve 9 selects for use German Montiert schutzart company to produce adopts 24V direct current supply, power 46W, range 1Bar ~ 350Bar.
Fig. 6 is the model blast analogue test observing and controlling process flow diagram among the present invention.Among Fig. 6, control computer called after host computer, data acquisition computer called after slave computer.Measurement and control program divides observing and controlling client-side program and observing and controlling server program two parts, and wherein the observing and controlling client-side program is installed in the host computer, and the observing and controlling server program is installed in the slave computer.Carry out the upper and lower computer communication test before the test earlier, host computer sends the telecommunication network diagnostic instruction, if network state is normal, then the answer back code signalisation host computer communication that the slave computer transmission is correct is normal, if network physical disconnects or breaks down, then host computer can't be received correct answer back code, and a whole set of TT﹠C system can't be moved.When network work just often, in the test of the newly-built blast analogue of host computer, Automatic Program generates the test catalogue, the secondary explosion test figure downloads to automatic remote in this catalogue.The sample frequency of transducer sensitivity, explosive initiation control port and 32 passage synchronous acquisition is set then, wherein sample frequency comprises collection and transient acquisition two parts at a slow speed, when hydro-extractor does not reach predetermined g value, carry out 32 passage 200Hz and gather at a slow speed, can dynamic monitoring in the test each working sensor whether normal.After setting was finished, system ignited control port and resets, and control port is exported high level like this, and the explosive initiation circuit will not worked.Rotate hydro-extractor, carry out at a slow speed and gather, when hydro-extractor reaches the g value of regulation, host computer sends initiation command, slave computer is carried out the ignition task after receiving order, and gather the model blast transient response signal of 32 passages simultaneously, on slave computer, deposit immediately after acquisition tasks is finished and back up test figure, utilize the 1000Mbps fiber optic network test figure to be uploaded under the test catalogue of host computer simultaneously, and show the waveform of testing, waveform is carried out secondary storage, analysis, printing, form and derivation.This method of testing has following advantage: one, this method of PXI data acquisition card digital output channel control solid-state relay detonating primer of utilizing is safe and reliable, even can under the charged situation of ignition control circuit, connect detonator, because when data acquisition computer powers on, the original levels of NI PXI-6133 data acquisition card digital output channel output is a high level, even igniting the control circuit input powers on, its detonator assembly input end disconnects all the time, carry out and ignite port reset, the output of igniting control circuit also disconnects, even therefore detonator assembly connects, also can not get electric initiation, handling safety is reliable; Two, the blast response signal of model is stored in earlier on the FLASH electronic hard disc of slave computer behind the explosive initiation, as data backup, has guaranteed the safe storage of explosive test data; Three, TT﹠C software adopts Client, then slave computer does not need software interface, actual figure is not according to one's analysis yet, slave computer is only realized data acquisition function, the program code amount is little, reduced the influence of bringing for real-time observing and controlling, non real-time tasks such as data analysis and processing, observing and controlling interface have been put into carry out in the host computer simultaneously, helped upper and lower computer and display one's respective advantages according to the emphasis in each comfortable test assignment because of the interface display task.Slave computer and host computer carry out alternate acknowledge by character string command, and program is succinct, and it carries out efficient stable.
Fig. 7 is the model bump simulation test observing and controlling process flow diagram among the present invention.Among Fig. 7, control computer called after host computer, data acquisition computer called after slave computer.Measurement and control program divides observing and controlling client-side program and observing and controlling server program two parts, and wherein the observing and controlling client-side program is installed in the host computer, and the observing and controlling server program is installed in the slave computer.Carry out the upper and lower computer communication test before the test earlier, upper control computer sends the telecommunication network diagnostic instruction, if network state is normal, then slave computer sends correct answer back code signalisation host computer, if network physical disconnects or breaks down, then host computer can't be received correct answer back code, and a whole set of TT﹠C system can't be moved.When network work just often, newly-built bump simulation test in host computer, Automatic Program generate the test catalogue, follow-up impact test data download to automatic remote in this catalogue.Control port, two-way laser narrow pulse signal that transducer sensitivity, inflation solenoid valve and release solenoid valve are set are then gathered port, pressure transducer sensitivity and sample frequency, wherein sample frequency comprises collection and transient acquisition two parts at a slow speed, when hydro-extractor does not reach predetermined g value, carry out 32 passage 200Hz and gather at a slow speed, can dynamic monitoring in the test each working sensor whether normal.After setting is finished, system's solenoid control port reset, control port output high level is inflated solenoid valve and is all closed with the release solenoid valve like this.Host computer sends the inflation instruction, slave computer receives order back output low level to inflation solenoid control port, the inflation solenoid valve is opened, utilize Nitrogen filling vehicle to be the inflation of gas big gun, and carry out gas big gun pressure acquisition synchronously with the sample frequency of 2kHz, when gas big gun pressure reached preset value, slave computer output high level was to inflation solenoid control port, inflation closed electromagnetic valve.Start hydro-extractor, carry out at a slow speed and gather, when hydro-extractor reaches regulation g value, host computer sends firing order, slave computer is received after the order to discharging solenoid control port output low level, the release solenoid valve is opened, the gas big gun is launched the bullet assembly on the geotechnological model that clashes in the impact test model casing, and gather the model impact response signal of 32 passages and the laser narrow pulse signal that the outgoing of bullet assembly produces with the 1MHz sample frequency simultaneously, on slave computer, deposit immediately after acquisition tasks is finished and back up test figure, and utilize the 1000Mbps fiber optic network test figure to be uploaded under the test catalogue of host computer simultaneously, and the waveform of demonstration test, waveform is carried out the secondary storage, analyze, print, form and derivation.This method of testing has following advantage: one, to control high-pressure solenoid valve reliable and stable for this NI of utilization PXI-6133 numeral output channel control solid-state relay; Two, the impact response signal behind the bullet assembly impact-model is stored in earlier on the FLASH electronic hard disc of slave computer, as data backup, has guaranteed the safe storage of impact test data; Three, TT﹠C software adopts Client, then slave computer does not need software interface, actual figure is not according to one's analysis yet, slave computer is only realized data acquisition function, the program code amount is little, reduced the influence of bringing for real-time observing and controlling, non real-time tasks such as data analysis and processing, observing and controlling interface have been put into carry out in the host computer simultaneously, helped upper and lower computer and display one's respective advantages according to the emphasis in each comfortable test assignment because of the interface display task.Slave computer and host computer carry out alternate acknowledge by character string command, and program is succinct, and it carries out efficient stable; Four, the total line multi-function number of PXI is adopted card and both can be gathered simulating signal, also can gather digital signal, making analog acquisition clock and digital collection clock by programming route RTSI bus is same clock, has guaranteed the high speed acquisition strict synchronism of 32 channel analog signal collections and two-way laser burst pulse digital signal.
Claims (6)
1. a geotechnical centrifuge model clashes into the blast analogue test unit, and it is characterized in that: described test unit comprises observing and controlling assembly and test assembly two parts;
The observing and controlling assembly contains control computer, data acquisition computer, fiber optical transceiver I, fiber optical transceiver II, ignites control circuit, bump control circuit, sensor signal conditioning device, sensor array; The network interface of control computer is connected by the network interface of netting twine with the fiber optical transceiver I, and the light mouth of fiber optical transceiver I is connected with the light mouth of fiber optical transceiver II by optical fiber, and the network interface of fiber optical transceiver II is connected with the Ethernet interface of data acquisition computer; Data acquisition computer is connected with ignition control circuit, bump control circuit, sensor signal conditioning device; Igniting control circuit is connected with the explosive test assembly; The bump control circuit is connected with the impact test assembly; The sensor signal conditioning device is connected with sensor array;
Test assembly contains explosive test assembly and impact test assembly;
The explosive test assembly contains detonator assembly, explosive train component, explosive test model casing; Ignition control circuit in the observing and controlling assembly is connected with detonator assembly, and detonator assembly is connected with explosive train component; Sensor array in explosive train component, detonator assembly and the observing and controlling assembly is installed in the explosive test model casing;
The impact test assembly contains Nitrogen filling vehicle, inflation solenoid valve, discharges solenoid valve, bullet assembly, gas big gun, laser velocimeter parts, big gun pressure sensor, gas circuit, impact test model casing; Nitrogen filling vehicle is connected with the inflation solenoid valve by gas circuit; The inflation solenoid valve links to each other, inflates solenoid valve by gas circuit and gas big gun and is connected with bump control circuit in the observing and controlling assembly; Discharging solenoid valve is connected with bump control circuit in the observing and controlling assembly; The gas big gun by gas circuit with discharge that solenoid valve links to each other, the gas big gun is connected with bullet assembly, laser velocimeter parts, big gun pressure sensor; The gas big gun is installed on the impact test model casing, and the sensor array in the observing and controlling assembly is installed in the impact test model casing.
2. geotechnical centrifuge model bump blast analogue test unit according to claim 1, it is characterized in that: described control computer is a PC, the observing and controlling client software is installed in this computing machine; Described data acquisition computer is set up based on the PXI bus, contains Zero greeve controller, internal memory, FLASH electronic hard disc, synchronous data collection card, asynchronous data collection card, and Zero greeve controller contains CPU and Ethernet interface; Zero greeve controller is connected with internal memory, FLASH electronic hard disc; The core bus that synchronous data collection card, asynchronous data collection cartoon are crossed on the PXI cabinet is connected with Zero greeve controller; The observing and controlling server software is installed in the data acquisition computer; Control computer and data acquisition computer adopt optical fiber to carry out network communication.
3. geotechnical centrifuge model bump blast analogue test unit according to claim 1, it is characterized in that: described ignition control circuit is provided with the solid-state relay that is used for the detonating primer assembly, and solid-state relay is connected with the data collecting card output terminal; Described bump control circuit is provided with the solid-state relay that is used to control inflation solenoid valve, release electromagnetic valve switch.
4. geotechnical centrifuge model bump blast analogue test unit according to claim 1, it is characterized in that: described inflation solenoid valve, release solenoid valve are high-pressure solenoid valve.
5. geotechnical centrifuge model bump blast analogue test unit according to claim 1, it is characterized in that: described gas big gun contains main gas tank, accessory air-space, piston valve body, gun tube; Fixedly connected between the major and minor air chamber, main gas tank has air admission hole and is used to install the measured hole of gas big gun pressure transducer main gas tank pressure; Accessory air-space inner chamber front end has an air admission hole, and two pores are arranged on the rear end cap, is respectively applied for air inlet and exhaust.
6. geotechnical centrifuge model bump blast analogue test unit according to claim 1, it is characterized in that: described impact test model casing is a circular configuration, end flanges is connected with bracketplant and locatees under the impact test model casing, and upper flanges is connected with gas big gun bracing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101167821A CN102288498A (en) | 2011-05-06 | 2011-05-06 | Impact and explosion analog testing device for geotechnical centrifuge model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101167821A CN102288498A (en) | 2011-05-06 | 2011-05-06 | Impact and explosion analog testing device for geotechnical centrifuge model |
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| Publication Number | Publication Date |
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| CN102288498A true CN102288498A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101167821A Pending CN102288498A (en) | 2011-05-06 | 2011-05-06 | Impact and explosion analog testing device for geotechnical centrifuge model |
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| CN105486525A (en) * | 2015-11-27 | 2016-04-13 | 中国人民解放军理工大学 | Model test device for carrying out underwater explosion research on centrifuge platform |
| CN106989889A (en) * | 2017-05-16 | 2017-07-28 | 中国水利水电科学研究院 | A kind of TT＆C system for centrifuge underwater explosion model test |
| CN110657705A (en) * | 2019-10-10 | 2020-01-07 | 南京智能仿真技术研究院有限公司 | Military training is with explosion impact analogue means |
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| CN110657705A (en) * | 2019-10-10 | 2020-01-07 | 南京智能仿真技术研究院有限公司 | Military training is with explosion impact analogue means |
| CN110657705B (en) * | 2019-10-10 | 2021-08-13 | 南京智能仿真技术研究院有限公司 | Military training is with explosion impact analogue means |
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Inventor after: Zhang Rong Inventor after: Pu Hao Inventor after: Hou Yujing Inventor after: Niu Baoliang Inventor after: Liang Jianhui Inventor before: Zhang Rong Inventor before: Pu Hao Inventor before: Niu Baoliang Inventor before: Hou Yujing Inventor before: Liang Jianhui |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG RONG PU HAO NIU BAOLIANG HOU YUJING LIANG JIANHUI TO: ZHANG RONG PU HAO HOU YUJING NIU BAOLIANG LIANG JIANHUI |
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Application publication date: 20111221 |