CN209372593U - Extended pattern tubing pressure resistance explosion bulge test control device - Google Patents

Abstract

The utility model discloses a kind of extended pattern tubing pressure resistance explosion bulge test control devices, including host computer and controller, the controller includes main control module and the branch control module being connected with the main control module, the host computer communicates with main control module described at least one, the main control module is connected with branch control module described at least one, pressure sensor of the branch control module respectively with solenoid valve and for acquiring tubing on-load pressure to be measured is connected, the solenoid valve is connected with frequency converter, the frequency converter is connected with the water pump for pressurizeing to the tubing to be measured.The extended pattern tubing pressure resistance explosion bulge test control device of the utility model using the above structure, pass through setting main control module and branch control module, it can realize that single channel is dismantled in the case where not influencing use, both Highgrade integration is embodied, Measuring error has been taken into account again, interface is extended, maximum dilatation address is 30, and tolerable 150 road hydraulic pressure work at the same time.

Description

Extended pattern tubing pressure resistance explosion bulge test control device

Technical field

The utility model relates to a kind of tubing pressure resistance explosion bulge test technology more particularly to a kind of extended pattern tubing pressure resistance explosions Experimental control device.

Background technique

As National Highway developed in recent years, the demand of each cause, industry to nonmetallic materials such as municipal administration, building is increasingly Increase, especially various tubing.Pipe pressure-proof bursting test machine is " thermoplasticity to be depressed in long term constant according to GB/T6111-2003 The measuring method of plastic pipe damage-resistant time " and ISO1167 standard requirement manufacture, while meet EN921 and The standard requirements of ASTMD1598, for measuring plastic pipe, composite pipe (such as: PVC, PE, PP, PB, ABC, AE-X and plastic-aluminum Multiple tube etc.) the pressure-resistant time to rupture depressed in long term constant and explosion test are plastic pipe factory and detection machine The detection device of structure indispensability.

For existing market water pressure control system, it is primarily present following problems:

1, system is constituted, and branch control is divided to two kinds, first is that single spur track controls, man-machine interface is that key adds digital-scroll technique, excellent Point is that one-way only operation is convenient, the disadvantage is that integrated level is not high, is difficult to adapt to the requirement in market；Second is that the road 3-5 is integrated, man-machine interface is Host computer operation, advantage is that integrated level is high, the disadvantage is that problematic all the way, multichannel stops working, and is unfavorable for repairing when maintenance.

2, scheme control, product ftercompction mode currently on the market have the low frequency of 0.5Hz, 1Hz to control, and there are also 50Hz or more High frequency control model, do not adapt to the test of all materials, pipe diameter size, need partial pressure range.

3, historical storage, the historical storage in the case of off line (no host computer), all whether there is or not paper notes for product currently on the market Recording function, but historical storage capacity is small, as unit of causing intra-record slack byte that can only use minute, hour, is difficult to accomplish second grade record.

4, time shaft, two ways provides time shaft for historical storage in the market, first is that original time point is passed under host computer, Internal system provides timer；Second is that system itself has permanent calendar function.Currently on the market all there is timing in both products Not smart disadvantage.

5, timely power-off protection, when powering off, system will store current state in time, and most multipotency reaches minute grade at present It does not save or before second grade power-off.

6, data acquire, and currently there are two kinds of acquisition precisions: 12 and 14, being only applicable to subdivision pressure limit System, be not suitable for width pressure control.

7, communication isolation is all made of Phototube Coupling in the market, meets 64 with the requirement of lower node, but be unsatisfactory for nodes up to a hundred Requirement.

Utility model content

The purpose of the utility model is to provide a kind of extended pattern tubing pressure resistance explosion bulge test control devices, by the way that master control is arranged Module and branch control module can realize that single channel is dismantled in the case where not influencing use, not only embody Highgrade integration, but also simultaneous Measuring error has been cared for, interface is extended, maximum dilatation address is 30, and tolerable 150 road hydraulic pressure work at the same time.

To achieve the above object, the utility model provides a kind of extended pattern tubing pressure resistance explosion bulge test control device, packet Host computer and controller are included, the controller includes main control module and the branch control module being connected with the main control module, institute It states host computer to communicate with main control module described at least one, the main control module and branch control module phase described at least one Even, pressure sensor of the branch control module respectively with solenoid valve and for acquiring tubing on-load pressure to be measured is connected, institute It states solenoid valve to be connected with frequency converter, the frequency converter is connected with the water pump for pressurizeing to the tubing to be measured.

Preferably, the main control module is connected with 5 branch control modules, and the branch control module is respectively with one Pressure sensor described in road is connected with solenoid valve described in two-way.

Preferably, the branch control module includes branch control panel, and the main control module includes shell and is set to institute The master board of enclosure interior is stated, the connector for connecting the branch control panel is provided in the master board.

Preferably, power supply unit, signal acquisition unit, communication unit and pressure-sensitive protection are integrated in the master board Unit is integrated with CPU, sampler and analog-digital converter on the branch control panel, and the pressure sensor is adopted with the signal Collect unit to be connected, the signal acquisition unit is connected with the sampler, and the sampler is successively through filter and the modulus Converter is connected with the CPU input terminal, and the CPU output end is successively through two-way pulse output interface, optical coupling isolator, power Amplifier, the pressure-sensitive protection location are connected with the solenoid valve.

Preferably, interface isolator is also integrated on the branch control panel, the host computer is successively single through the communication First, the described interface isolator is connected with the CPU, and the communication unit is RS485 bus, and the interface isolator is ADM2483BRWZ interface isolator.

Preferably, it is also integrated with memory and time controller on the branch control panel, the memory includes FM24C16B FeRAM memory chip and AT45DB041 storage chip, the time controller are DS1305E perpetual calendar chip, institute Time controller is stated to be connected with reserve battery.

Preferably, said supply unit include direct current 12V power supply, direct current 24V power supply, anti-overflow circuit, reverse-connection preventing circuit, 5V voltage regulator circuit, 3.3V voltage regulator circuit and filter circuit, the direct current 12V power supply is successively through the anti-overflow circuit, described anti- Reversal connection circuit is connected with the 5V voltage regulator circuit, and the 5V voltage regulator circuit is connected with the CPU and the interface isolator respectively, The direct current 12V power supply is also successively passed through the anti-overflow circuit, the reverse-connection preventing circuit, the filter circuit and the pressure Sensor be connected, the direct current 24V power supply successively through the anti-overflow circuit, the reverse-connection preventing circuit, tertiary filter with it is described Solenoid valve is connected.

Preferably, the 5V voltage regulator circuit is successively connected through the filter circuit, isolation circuit with the interface isolator, The 5V voltage regulator circuit is also successively connected through the filter circuit, 3.3V voltage regulator circuit, the filter circuit with the CPU, institute Stating 3.3V voltage regulator circuit is AMS1117-3.3 chip, and the 5V voltage regulator circuit is LM2576-5.0 chip, and the isolation circuit is B0505S_1W power isolation circuit.

Preferably, the analog-digital converter also respectively with the reference voltage circuit being integrated on the branch control panel and refer to Show that lamp is connected.

Preferably, the power amplifier is the high-power output circuit of FR120524V.

Therefore, the beneficial effects of the utility model include:

1, system architecture uses master board+branch control panel mode, for solving integrated level in terms of system composition Not high, the disadvantage of Measuring error inconvenience accomplishes the combination of both collection maintenance and integrated level.

2, there is fuzzy adaptivecontroller mode to take into account low frequency control, high frequency control, debugging by adaptive control scheme, CPU Research and development department is directed to the big output mode of ultra-large type tubing.The test of all materials, pipe diameter size is adapted to, and does not need partial pressure model It encloses.

3, historical record data amount is big, in terms of paperless tests functions, using 4Mbit massive store (extend to 8M, 16M) accomplish real second grade record, the valid data of each branch are up to more than 260,000.

4, time shaft is accurate, and using there is permanent calendar function special chip, temperature self-compensation is accomplished to be much better than 1% essence Exactness, annual error are no more than 5 minutes.

5, power-off protection.Using FeRAM memory chip, can timely power-off protection, be truly realized Millisecond and record current shape State, when powering off, system is accurate, stores current state in time.

6, acquisition precision is high, and data acquisition measures pressure using complete 16, low cost, sigma-delta type modulus conversion chip Range is wider.

7, node is more, using the Magnetic isolation chip based on icoupler technology, while meeting 256 node high speed operations.

Below by drawings and examples, the technical solution of the utility model is described in further detail.

Detailed description of the invention

Fig. 1 is a kind of structural block diagram of extended pattern tubing pressure resistance explosion bulge test control device of the embodiments of the present invention；

Fig. 2 is a kind of circuit theory of extended pattern tubing pressure resistance explosion bulge test control device of the embodiments of the present invention Figure.

Specific embodiment

Below with reference to attached drawing, the utility model will be further described, it should be noted that the present embodiment is with this skill Premised on art scheme, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is not It is limited to the present embodiment.

Fig. 1 is a kind of structural block diagram of extended pattern tubing pressure resistance explosion bulge test control device of the embodiments of the present invention, Fig. 2 is a kind of circuit diagram of extended pattern tubing pressure resistance explosion bulge test control device of the embodiments of the present invention, such as Fig. 1 and Shown in Fig. 2, the structure of the utility model, including host computer and controller, the controller include main control module and with the master The connected branch control module of module is controlled, the host computer communicates with main control module described at least one, the main control module It is connected with branch control module described at least one, the branch control module is respectively with solenoid valve and for acquiring tubing to be measured The pressure sensor of on-load pressure is connected, and the solenoid valve is connected with frequency converter, the frequency converter with for described in test tube The water pump of material pressurization is connected, and main control module described in the present embodiment is connected with 5 branch control modules, the branch control Module is connected with solenoid valve described in the pressure sensor all the way and two-way respectively.The branch control module includes branch control Plate, the main control module include shell and the master board for being set to the enclosure interior, are arranged in the master board useful In the connector for connecting the branch control panel.Power supply unit, signal acquisition unit, communication list are integrated in the master board Member and pressure-sensitive protection location are integrated with CPU, sampler and analog-digital converter, the pressure sensor on the branch control panel It is connected with the signal acquisition unit, the signal acquisition unit is connected with the sampler, and the sampler is successively through filtering Device and the analog-digital converter are connected with the CPU input terminal, and the CPU output end is successively through two-way pulse output interface, light Coupling isolator, power amplifier, the pressure-sensitive protection location are connected with the solenoid valve, the analog-digital converter also respectively with collection Reference voltage circuit on branch control panel described in Cheng Yu is connected with indicator light, and the reference voltage circuit in the present embodiment is selected MC1403 reference voltage element, it is the base-emitter forward voltage VBE for utilizing a negative temperature coefficient and the work of positive temperature coefficient Make under different current densities, two transistor base-emitter voltage difference △ VBE are added and the reference electricity of the zero-temperature coefficient of formation Potential source, the temperature coefficient of output voltage are zero, i.e. output voltage is temperature independent, have the base of high-precision, low drifting energy gap Quasi- power supply, wherein preferred, the power amplifier is the high-power output circuit of FR120524V；CPU is selected in the present embodiment Atmel805 kernel embedded scm, model STC89C58RD+, CPU have ISP (In System Programming) In-system programmable components chip, highest working clock frequency are 80MHz, and what piece included 4K Bytes can repeatedly erasable 1000 times Flash read-only program memory, device compatibility standard MCS-51 instruction system and 80C51 pin configuration are integrated in chip logical With 8 central processing units and ISP Flash storage unit, there is in-system programmable components (ISP) characteristic, cooperate the control journey at the end PC The program code of user can be downloaded into inside single-chip microcontroller by sequence, save purchase universal programmer, and speed is faster, inside collection At MAX810 Special reset circuit, external reset circuit can be saved；Signal acquisition unit selects AD770516 serial AD cores Piece, the AFE(analog front end) in 2 channels applied to low frequency measurement, the device can directly receive the input letter of the low level from sensor Number, selected input signal is sent to the dedicated front end of a gain programmable based on analog modulator, digital filter in piece The output signal for handling modulator, by controlling the cut off and output renewal rate of register tunable filter in piece, from And first trap of digital filter is programmed, then generate serial numeral output, thus yield value, signal polarity with And the selection of renewal rate can be configured with serial input mouth by software.16 are realized without loss using sigma-delta switch technology Code performance, the device further include self calibration and system calibration option, are missed with the gain of abatement device itself or system and offset Difference.

Said supply unit includes direct current 12V power supply, direct current 24V power supply, anti-overflow circuit, reverse-connection preventing circuit, 5V pressure stabilizing Circuit, 3.3V voltage regulator circuit and filter circuit, the direct current 12V power supply is successively through the anti-overflow circuit, the anti-reverse electricity Road is connected with the 5V voltage regulator circuit, and the 5V voltage regulator circuit is connected with the CPU and the interface isolator respectively, described straight 12V power supply is flowed also successively through the anti-overflow circuit, the reverse-connection preventing circuit, the filter circuit and the pressure sensor phase Even, the direct current 24V power supply is successively through the anti-overflow circuit, the reverse-connection preventing circuit, tertiary filter and the solenoid valve It is connected.Specifically, the 5V voltage regulator circuit is successively connected through the filter circuit, isolation circuit with the interface isolator, institute 5V voltage regulator circuit is stated also successively to be connected through the filter circuit, 3.3V voltage regulator circuit, the filter circuit with the CPU, it is described 3.3V voltage regulator circuit is AMS1117-3.3 chip, and the 5V voltage regulator circuit is LM2576-5.0 chip, and the isolation circuit is B0505S_1W power isolation circuit, wherein LM25766-5.0 chip is the integrated pressure stabilizing electricity of 3A electric current output buck switching mode Road includes fixed oscillator (52kHz) and benchmark voltage-stablizer (1.23V), and has including current limit and Thermal shutdown electricity Protection circuit including road etc. only needs few peripheral components that can constitute efficient voltage regulator circuit using the device；AMS1117- 3.3 chips are a kind of positive low dropout voltage regulators that output voltage is 3.3V, are suitable for as high-efficient linear voltage-stablizer, switch electricity Source voltage-stablizer, battery charger, minicomputer system, interface termination, power management battery of laptop etc. are powered； B0505S_1W power isolation circuit is the mono- output dc/dc power module of 1W, is needed distributed power supply system on to PCB To be isolated with input power and power supply occasion that output accuracy is more demanding.

It is also integrated with interface isolator on the branch control panel, the host computer is successively through the communication unit, described Interface isolator is connected with the CPU, and the communication unit is RS485 bus, and the interface isolator connects for ADM2483BRWZ Mouth isolator, ADM2483BRWZ interface isolator is the isolated form RS-485 transceiving chip based on iCoupler Magnetic isolation technology, Digital isolator, the differential driver with ternary output and the RS485 with tri-state input for being internally integrated triple channel are poor Divide receiver, number of nodes allows up to 256, and maximum transmission rate is up to 500Kbps, since Magnetic isolation is cancelled in design The photoelectric conversion link of efficiency is influenced in photoelectrical coupler, therefore its power consumption is only the 1/6--1/10 of photoelectrical coupler, and With message transmission rate more higher than photoelectrical coupler, time sequence precision and transient state common mode inhibition capacity, while also eliminating light The problem of unstable electric current transmission rate in being electrically coupled, nonlinear transport, temperature and service life etc..

Memory and time controller are also integrated on the branch control panel, the memory includes FM24C16B ferroelectricity Storage chip and AT45DB041 storage chip, the time controller are DS1305E perpetual calendar chip, the time controller It is connected with reserve battery, wherein DS1305E perpetual calendar chip binary-coded decimal (BCD) code indicates the second of real-time clock, divides, small When, week, day, Month And Year temporal information, and solar month of 30 days (month less than 31 days) and the date in leap year are adjusted automatically It is whole, it has band AM/PM concurrently and indicates 12 hours and 24 hours two kinds of time instruction formats；FM24C16B FeRAM memory chip uses ferroelectricity The 16K bit non-volatile memory of technology manufacture, Ferroelectric Random Access Memory (FRAM) have it is non-volatile, and can be as RAM The same fast reading and writing, data can save 10 years after a power failure, relative to EEPROM or other nonvolatile memories, FRAM tool There is many advantages, such as system reliability is higher, and structure is simpler, unlike EEPROM series, FM24C16 is with bus speed Write operation is carried out, without delay, the reading-writing life-span of FM24C16B is the several times of EEPROM, and due to being promoted without builtin voltage Circuit, FM24C16B power dissipation ratio EEPROM during write operation are much lower；AT45DB041 storage chip is big with capacity, reads and writes Many advantages, such as speed is fast, peripheral circuit is few, more importantly the chip minimum can work in 2.5V, operating current is only 4mA, therefore be widely used in the occasions such as mobile communication, portable, the data in AT45DB041 are stored by page, main memory Page totally 2048, every page of 264 bytes are stored in data power down in main memory not so total capacity is 528K byte (about 4M bit) It loses, there are two the data buffer storages that capacity is 264 bytes by AT45DB041 other than main memory.

Therefore, the extended pattern tubing pressure resistance explosion bulge test control device using the above structure of the utility model, by setting Main control module and branch control module are set, can realize that single channel is dismantled in the case where not influencing use, both embody highly integrated Change, and taken into account Measuring error, extend interface, maximum dilatation address is 30, and tolerable 150 road hydraulic pressure work at the same time.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than limit it System, although the utility model has been described in detail with reference to the preferred embodiment, those skilled in the art should manage Solution: it still can be with the technical solution of the present invention is modified or equivalently replaced, and these are modified or equally replace Changing also cannot make modified technical solution be detached from the spirit and scope of the technical scheme of the present invention.

Claims (10)

1. a kind of extended pattern tubing pressure resistance explosion bulge test control device, including host computer and controller, it is characterised in that: the control Device processed includes main control module and the branch control module being connected with the main control module, the host computer and at least one described master Control module communicates, and the main control module is connected with branch control module described at least one, the branch control module difference Pressure sensor with solenoid valve and for acquiring tubing on-load pressure to be measured is connected, and the solenoid valve is connected with frequency converter, institute Frequency converter is stated to be connected with the water pump for pressurizeing to the tubing to be measured.

2. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 1, it is characterised in that: the master Control module be connected with 5 branch control modules, the branch control module respectively with the pressure sensor and two all the way Solenoid valve described in road is connected.

3. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 1, it is characterised in that: the branch Road control module includes branch control panel, and the main control module includes shell and the master board for being set to the enclosure interior, The connector for connecting the branch control panel is provided in the master board.

4. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 3, it is characterised in that: the master Power supply unit, signal acquisition unit, communication unit and pressure-sensitive protection location are integrated on control panel, on the branch control panel It is integrated with CPU, sampler and analog-digital converter, the pressure sensor is connected with the signal acquisition unit, and the signal is adopted Collection unit is connected with the sampler, and the sampler is successively through filter and the analog-digital converter and the CPU input terminal It is connected, the CPU output end is successively single through two-way pulse output interface, optical coupling isolator, power amplifier, the pressure-sensitive protection It is first to be connected with the solenoid valve.

5. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 4, it is characterised in that: the branch Interface isolator is also integrated on the control panel of road, the host computer is successively through the communication unit, the interface isolator and institute It states CPU to be connected, the communication unit is RS485 bus, and the interface isolator is ADM2483BRWZ interface isolator.

6. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 4, it is characterised in that: the branch Be also integrated with memory and time controller on the control panel of road, the memory include FM24C16B FeRAM memory chip and AT45DB041 storage chip, the time controller are DS1305E perpetual calendar chip, the time controller and reserve battery It is connected.

7. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 4, it is characterised in that: the confession Electric unit includes direct current 12V power supply, direct current 24V power supply, anti-overflow circuit, reverse-connection preventing circuit, 5V voltage regulator circuit, 3.3V pressure stabilizing electricity Road and filter circuit, the direct current 12V power supply is successively through the anti-overflow circuit, the reverse-connection preventing circuit and 5V pressure stabilizing electricity Road is connected, and the 5V voltage regulator circuit is connected with the CPU and the interface isolator respectively, and the direct current 12V power supply is also successively It is connected through the anti-overflow circuit, the reverse-connection preventing circuit, the filter circuit with the pressure sensor, the direct current 24V Power supply is successively connected through the anti-overflow circuit, the reverse-connection preventing circuit, tertiary filter with the solenoid valve.

8. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 7, it is characterised in that: the 5V Voltage regulator circuit is successively connected through the filter circuit, isolation circuit with the interface isolator, and the 5V voltage regulator circuit is also successively It is connected through the filter circuit, 3.3V voltage regulator circuit, the filter circuit with the CPU, the 3.3V voltage regulator circuit is AMS1117-3.3 chip, the 5V voltage regulator circuit be LM2576-5.0 chip, the isolation circuit be B0505S_1W power supply every From circuit.

9. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 4, it is characterised in that: the mould Number converter is also connected with the reference voltage circuit and indicator light being integrated on the branch control panel respectively.

10. a kind of extended pattern tubing pressure resistance explosion bulge test control device according to claim 4, it is characterised in that: described Power amplifier is the high-power output circuit of FR120524V.