CN2821594Y - Switch mechanical property detector - Google Patents
Switch mechanical property detector Download PDFInfo
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- CN2821594Y CN2821594Y CN 200520073711 CN200520073711U CN2821594Y CN 2821594 Y CN2821594 Y CN 2821594Y CN 200520073711 CN200520073711 CN 200520073711 CN 200520073711 U CN200520073711 U CN 200520073711U CN 2821594 Y CN2821594 Y CN 2821594Y
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Abstract
The utility model relates to a testing instrument for switch mechanical properties, which belongs to the technical field of testing devices. The utility model comprises a lower machine which is connected with the controlled end of a circuit breaker to be tested through a signal amplification driving circuit, and the testing signal sampling end of the circuit breaker is connected with the signal collecting end of the lower machine through an input signal conditioning circuit. The signal input ends of a contact signal circuit, a coil electrification signal circuit, a coil current signal processing circuit and a displacement sensor input circuit in the input signal conditioning circuit are respectively connected with the corresponding positions of the circuit breaker to be tested, and the signal output ends of the contact signal circuit, the coil electrification signal circuit, the coil current signal processing circuit and the displacement sensor input circuit are respectively connected with the corresponding signal collecting ends of the lower machine. The utility model can receive instructions of an upper machine, collect multiple characteristic signals comprising contact signals, coil electrification signals, coil current signals, etc.; particularly the utility model can collect multiple mechanical characteristic signals of a sensor, and the signals are transmitted to the upper machine and tuned, processed and then displayed so as to practically meet the testing requirements of a new standard.
Description
Technical field
The utility model relates to a kind of testing mechanical characteristic instrument, and especially a kind of switch machinery characteristic tester belongs to the testing tool technical field.
Background technology
Previous switch testing mechanical characteristic is realized that by light oscillograph multichannel light oscillograph is recorded in coil charged (a deciliter instruction is sent to), contact signal, separating brake position signalling etc. on the light sensitive paper, determines the parameter of switch by reading oscillogram.Along with the development of chip technology, last century the eighties, domestic with single-chip microcomputer as main control chip, develop the oscillographic switch of simulation light machinery characteristic tester.This quasi-instrument has realized that the digitizing of test parameter shows.
This series products continues up to new standard IEC62271-100 (its domestic version GB1984-2003) put into effect before, except on the precision by original 8BIT, 10KHZ brings up to 12,25KHZ, other aspects do not have the variation of essence.
The key concept of IEC62271-100 is: each isolating switch product all has the typical curve of its stroke characteristic.When total kilometres surpass 20mm, ± 5% total kilometres are superimposed on the reference curve, produce two curves, these two envelopes that curve is exactly this product; At total kilometres during, be superimposed to and generate two curves on the typical curve with ± 2mm smaller or equal to 20mm.This can total kilometres 5% to envelope or 2mm (with respect to stroke smaller or equal to 20mm) move up and down with interior, promptly under limiting case, coenvelope line or lower envelope line overlap with reference curve.Among the envelope, then the mechanical property of switch was qualified about the curve that test specimen produces must be in after envelope is subjected to moving of above-mentioned restriction fully.Otherwise be defective.
The problem that the execution of new standard runs into is that existing equipment all can not satisfy the test request of new standard to isolating switch multinomial characterisitic parameter, especially mechanical characteristic.
The utility model content
The utility model wants the technical solution problem to be: at the limitation that above prior art exists, propose a kind of switch machinery characteristic tester that can satisfy the new standard test request.
In order to solve above technical matters, the applicant is through investigation, rationally solved the signals collecting connection problem of slave computer and isolating switch to be measured, the technical scheme that proposes the utility model switch machinery characteristic tester is: this instrument contains the slave computer of putting the instruction of letter host computer, collection raw data, described slave computer is connected with the controlled end of isolating switch to be measured by the signal amplification driving circuit, and the test signal sampling end of described isolating switch is connected with the signals of underlying computer collection terminal by the input signal conditioning circuit; Described input signal conditioning circuit comprises contact signal circuit, coil charged signal circuit, coil current signal treatment circuit and displacement transducer input circuit; The signal input part string of described contact signal circuit is in the branch of isolating switch to be measured or close in the loop, and its signal output part connects the contact signals collecting end of slave computer by photoelectrical coupler; The signal input part of described coil charged signal circuit is in parallel with the branch of isolating switch to be measured or zygonema circle, and its signal output part connects the coil charged signal collection terminal of slave computer by photoelectrical coupler; The signal input part of described coil current signal treatment circuit and the branch of isolating switch to be measured or the shunt that closes in the loop are in parallel, and its signal output part connects the contact signals collecting end of slave computer by Hall element; The moving contact of isolating switch is surveyed in the signal input part reception of described displacement transducer input circuit, and its signal output part was connected the transducing signal collection terminal that connects slave computer by emitter follower.
The switch machinery characteristic tester that adopts above technical scheme to manufacture and design can be accepted the instruction of host computer, by the action of signal amplification driving circuit control isolating switch, and comprise multinomial characteristic signals such as contact signal, coil charged signal, coil current signal by the collection of input signal conditioning circuit, especially can gather multinomial mechanical property signal from displacement transducer, these signals are transferred to host computer adjust and show after handling, thereby satisfy the test request of new standard conscientiously.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the circuit diagram of Fig. 1 embodiment slave computer.
Fig. 2-1 is the topography enlarged drawing of Fig. 2 to Fig. 2-7.
Fig. 3 is the signal amplification driving circuit figure of Fig. 1 embodiment.
Fig. 4 is the contact signal circuit diagram of input signal conditioning circuit among Fig. 1 embodiment.
Fig. 5 is the coil charged signal circuit diagram of input signal conditioning circuit among Fig. 1 embodiment.
Fig. 6 is the coil current signal treatment circuit figure of input signal conditioning circuit among Fig. 1 embodiment.
Fig. 7 is the displacement transducer input circuit figure of input signal conditioning circuit among Fig. 1 embodiment.
Embodiment
Embodiment one
The switch of present embodiment machinery characteristic tester as shown in Figure 1, host computer is responsible for parameter tuning, the result explains, shows, slave computer is responsible for putting the instruction of letter host computer, is gathered raw data.Slave computer is connected with the controlled end of isolating switch to be measured by the signal amplification driving circuit, and the end of the test signal of isolating switch sampling simultaneously is connected with the signals of underlying computer collection terminal by the input signal conditioning circuit.
Slave computer as shown in Figure 2, mainly by forming: embedded controller S3C44B0X (label 1), FLASH storer SST39VF160 (label 2) and SDRAM storer HY57V641620 (label 3), RS232 serial communication interface (label 4), usb communication interface (label 5), high-speed a/d converter AD976 (label 6) and power unit (label 7) with the lower part.
Embedded controller S3C44B0X is shown in Fig. 2-1, this part is the core of lower computer system, S3C44B0X is 16/32 risc processor of Samsung company, build-in components is provided, comprises: 8KB cache, internal SRAM, lcd controller, the 2 passage UART that band is shaken hands automatically, 4 passage DMA, system administration manager (chip selection logic, the FD/EDO/SDRAM controller), substitute 5 passage timers of PWM function, I/O port, RTC, 8 path 10 position ADC, the IIC-BUS interface, IIS-BUS interface, SIO interface and PLL frequency multiplier synchronously.
FLASH storer SST39VF160 is shown in Fig. 2-2, adopt 16 bit data bus to be connected with the S3C44B0X embedded controller, take the Bank0 space of system, address realm is 0x00000000-0x001FFFFF, the total capacity of SST39VF160 is 1M * 16Bit, is used for depositing program of lower computer.
SDRAM storer HY57V641620 is shown in Fig. 2-3, and its chip selection signal (being 19 pin nSCS among the figure) links to each other with the nGCS6 of embedded controller S3C44B0X, takies the Bank6 address space of S3C44B0X controller.The address realm that HY57V641620 takies is 0x0C000000-0x0C7FFFFF, and it is used for storing the data of lower computer system.
RS-232C and RS485 communication interface adopt the MAX3232C and the MAX485 chip that are connected with S3C44B0X embedded controller communication terminal to form RS-232C and RS485 communication interface respectively shown in Fig. 2-4, are used for communicating with host computer and other instruments.
The usb communication interface is shown in Fig. 2-5.Adopt the USB interface device PDIUSBD12 of band parallel bus, this device meets 1.1 editions standards of USB (universal serial bus) (USB).D7～the D0 of its data line and system bus links to each other, the nGCS2 of chip selection signal CS-N and processor links to each other, take the Bank2 space of system, address realm is 0x04000000-0x05FFFFFF, and PDIUSB12 only takies wherein 2 addresses, and the ADDR0 of its address wire A0 and system address bus links to each other.The EXINT2 of its interrupt signal output and S3C44B0X links to each other, so USB interrupts being the external interrupt 2 of system.
The high-speed a/d conversion portion is shown in Fig. 2-6.Adopt the AD976 converter, AD976A is 16 A/D converters, can reach the 200kSPS handling capacity.D15～the D0 of its data bus and system bus links to each other, and the nGCS3 of chip selection signal CS and system links to each other, and takies the Bank3 space, i.e. 0x06000000～0x07FFFFFF.Busy signal BUSY receives the EXINT1 of system through phase inverter, and converting signal is the external interrupt 1 of system, and the reference source of A/D converter is provided by high precision reference AD780, and the high precision of AD780 has very significant effects to the conversion accuracy of AD976A.
Power unit mainly is made of AS1117-5.0, LM1117-3.3, LM1117-2.5 chip shown in Fig. 2-7, can produce the needed 5.0V of system, 3.3V and 2.5V burning voltage.
The signal amplification driving circuit mainly is made up of photoelectrical coupler U2A and amplifying triode N5 and relay coil J7 as shown in Figure 3.Same driving circuit has 2 the tunnel, be used for driving switching winding and closing coil respectively, the control signal output ends of slave computer (58 of S3C44B0X (GPF6) pins and 59 (GPF5) pin among Fig. 2-1) output high level or low level, connect the base stage of amplifying triode N5 by photoelectrical coupler U2A, the collector of this triode meets the relay coil J7 of control circuit-breaker switching on-off action, therefore after can accepting the instruction of host computer by slave computer, control circuit-breaker switching on-off to be measured.
The input signal conditioning circuit is made of contact signal circuit, coil charged signal circuit, coil current signal treatment circuit and displacement transducer input circuit.
The contact signal circuit has 4 tunnel same circuit as shown in Figure 4, measures the electriferous state of A phase, B phase, C phase and auxiliary contact respectively.Its signal input part AIN goes here and there in the branch of isolating switch to be measured or closes in the loop, and its signal output part A connects the contact signals collecting end of slave computer, i.e. 28 (GPG4) pin of S3C44B0X among Fig. 2-1 by photoelectrical coupler U2C.Processor judges by the level signal that detects its input whether corresponding contact is charged.
The coil charged signal circuit as shown in Figure 5, be used for determining the charged zero-time of coil, mainly form by rectifier bridge D19 and photoelectrical coupler UC3, its signal input part OCIN1, OCIN2 are in parallel with the branch or the zygonema circle of isolating switch to be measured, connect the two ends of rectifier bridge D19, the signal output part F of rectifier bridge D19 connects the coil charged signal collection terminal of slave computer such as 118 (GPC0) pin of the S3C44B0X processor among Fig. 2-1 by photoelectrical coupler U3C.Processor changes by the level of judging its input and starts timer and carry out timing, determines the zero-time that coil is charged.
The coil current signal treatment circuit as shown in Figure 6, be used for measure coil currents, mainly form, because measurand is a low current signal by integrated circuit (IC) chip C6 (ICL7650) and Hall element H2, amplify the imbalance cause voltage and current easily, and zero point drift, self-excitation are disturbed.So select for use from steady zero copped wave operational amplifier ICL7650 and realize the voltage-to-current conversion.The branch of its signal input part OC-and OC+ and isolating switch to be measured or the shunt that closes in the loop are in parallel, through integrated circuit (IC) chip input end 4,5 pin, by the output of its output terminal 10 pin, connect the contact signals collecting end of slave computer, i.e. 75 pin AIN0 input ends among Fig. 2-1 by Hall element H2.And AIN0 is one of the input end of 10 8 passage ADC converters of S3C44B0X processor, can measure coil currents by it.
The displacement transducer input circuit as shown in Figure 7, its signal input part is surveyed the moving contact of isolating switch by the reception of 3PIN plug-in unit, its signal output part was connected the transducing signal collection terminal that connects slave computer by emitter follower, i.e. the analog quantity input end pin 1 of AD976 among Fig. 2-6.AD976 is the 16bit high-speed a/d converter, thereby makes sampling precision can reach 16.
Use proof, the switch machinery characteristic tester of present embodiment has the following advantages:
● accurately sampling---time precision can be up to 60kHz, and amplitude precision can reach 16;
● host computer is finished the analysis and the management of test overall process and late time data, and the upper and lower machine connects by USB interface, has guaranteed accuracy, stability and the high speed of test;
● can print detailed account, form comprises single branch, singly closes curve and parameter;
● can realize switch list branch, singly close, close branch, oco, oco-close-minute, close-six kinds of tests of oco;
● be equipped with curve to generate software and be used to generate typical curve;
● can come Measuring Time-stroke characteristic curve by sensor installation during test, and can finish the comparison of typical curve and measured curve according to IEC62271-100-2001-05 and GB/T1983-2004 standard;
● comprise internal control, external control, hand-power and close three kinds of control modes of branch;
● can select sensor is installed in any phase in the ABC three-phase, adjust flexibly;
● can test out divide-shut brake coil current peak value and change curve;
● can test and demonstrate the change curve of contact speed and acceleration;
● can define the contact movement velocity respectively according to accounting for stroke number percent, time, stroke, satisfy various velocity test requirements;
● can directly accurate measuring contacts open distance;
● energy measurement also shows fracture waveform, bounce-back amplitude, spring, the excess of stroke, overshoot etc.;
● can preserve the data that all were tested, and the later stage query function can be provided;
● can survey the isolating switch under the various electric pressures such as heavy wool, few oil, SF6, vacuum.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. switch machinery characteristic tester, contain the slave computer of putting the instruction of letter host computer, collection raw data, it is characterized in that: described slave computer is connected with the controlled end of isolating switch to be measured by the signal amplification driving circuit, and the test signal sampling end of described isolating switch is connected with the signals of underlying computer collection terminal by the input signal conditioning circuit; Described input signal conditioning circuit comprises contact signal circuit, coil charged signal circuit, coil current signal treatment circuit and displacement transducer input circuit; The signal input part string of described contact signal circuit is in the branch of isolating switch to be measured or close in the loop, and its signal output part connects the contact signals collecting end of slave computer by photoelectrical coupler; The signal input part of described coil charged signal circuit is in parallel with the branch of isolating switch to be measured or zygonema circle, and its signal output part connects the coil charged signal collection terminal of slave computer by photoelectrical coupler; The signal input part of described coil current signal treatment circuit and the branch of isolating switch to be measured or the shunt that closes in the loop are in parallel, and its signal output part connects the contact signals collecting end of slave computer by Hall element; The moving contact of isolating switch is surveyed in the signal input part reception of described displacement transducer input circuit, and its signal output part was connected the transducing signal collection terminal that connects slave computer by emitter follower.
2. according to the described switch of claim 1 machinery characteristic tester, it is characterized in that: described slave computer mainly is made of embedded controller and the FLASH storer that is attached thereto by bus, SDRAM storer, high-speed a/d converter and RS232 serial communication interface and usb communication interface.
3. according to the described switch machinery of claim 2 characteristic tester, it is characterized in that: described signal amplification driving circuit mainly is made up of photoelectrical coupler, amplifying triode and relay coil, the control signal output ends of described slave computer connects the base stage of amplifying triode by photoelectrical coupler, and the collector of described triode connects the relay coil of control circuit-breaker switching on-off action.
4. according to the described switch machinery of claim 3 characteristic tester, it is characterized in that: described coil charged signal circuit mainly is made up of rectifier bridge and photoelectrical coupler, its signal input part connects the two ends of rectifier bridge, and the signal output part of described rectifier bridge connects the coil charged signal collection terminal of slave computer by photoelectrical coupler.
5. according to the described switch machinery of claim 4 characteristic tester, it is characterized in that: described coil current signal treatment circuit mainly is made up of integrated circuit (IC) chip and Hall element, its signal input part is connect the contact signals collecting end of slave computer through the integrated circuit (IC) chip input end by Hall element by this integrated circuit (IC) chip output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073711 CN2821594Y (en) | 2005-07-19 | 2005-07-19 | Switch mechanical property detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073711 CN2821594Y (en) | 2005-07-19 | 2005-07-19 | Switch mechanical property detector |
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| Publication Number | Publication Date |
|---|---|
| CN2821594Y true CN2821594Y (en) | 2006-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073711 Expired - Lifetime CN2821594Y (en) | 2005-07-19 | 2005-07-19 | Switch mechanical property detector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759707A (en) * | 2012-07-18 | 2012-10-31 | 沈阳工业大学 | Dynamic characteristic testing instrument |
| CN103852717A (en) * | 2012-11-29 | 2014-06-11 | 沈阳工业大学 | Visual portable high-voltage circuit breaker mechanical characteristic recording method |
| CN104635153A (en) * | 2015-02-07 | 2015-05-20 | 福州大学 | Low-voltage circuit breaker feature test analysis platform |
| CN107367688A (en) * | 2017-08-15 | 2017-11-21 | 广州霍斯通电气股份有限公司 | A kind of equipment for detecting gas-filling cabinet |
| CN107632219A (en) * | 2017-10-11 | 2018-01-26 | 四川九州电子科技股份有限公司 | A kind of automatic switching test system and its method of testing |
| CN107843834A (en) * | 2017-11-06 | 2018-03-27 | 国网福建省电力有限公司 | Integrate the electric convergence control cabinet of circuit-breaker testing debugging function |
| CN108490348A (en) * | 2018-05-25 | 2018-09-04 | 广东电网有限责任公司 | Breaker performance test methods, the apparatus and system of the double earthing knife-switch of band |
| CN110412455A (en) * | 2019-07-11 | 2019-11-05 | 上海工程技术大学 | A kind of switch testing circuitry and switch testing equipment |
-
2005
- 2005-07-19 CN CN 200520073711 patent/CN2821594Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759707A (en) * | 2012-07-18 | 2012-10-31 | 沈阳工业大学 | Dynamic characteristic testing instrument |
| CN103852717A (en) * | 2012-11-29 | 2014-06-11 | 沈阳工业大学 | Visual portable high-voltage circuit breaker mechanical characteristic recording method |
| CN104635153A (en) * | 2015-02-07 | 2015-05-20 | 福州大学 | Low-voltage circuit breaker feature test analysis platform |
| CN104635153B (en) * | 2015-02-07 | 2017-06-06 | 福州大学 | Low-voltage circuit breaker characteristic test analysis platform |
| CN107367688A (en) * | 2017-08-15 | 2017-11-21 | 广州霍斯通电气股份有限公司 | A kind of equipment for detecting gas-filling cabinet |
| CN107632219A (en) * | 2017-10-11 | 2018-01-26 | 四川九州电子科技股份有限公司 | A kind of automatic switching test system and its method of testing |
| CN107843834A (en) * | 2017-11-06 | 2018-03-27 | 国网福建省电力有限公司 | Integrate the electric convergence control cabinet of circuit-breaker testing debugging function |
| CN107843834B (en) * | 2017-11-06 | 2020-02-14 | 国网福建省电力有限公司 | Electric control cabinet integrating breaker test debugging function |
| CN108490348A (en) * | 2018-05-25 | 2018-09-04 | 广东电网有限责任公司 | Breaker performance test methods, the apparatus and system of the double earthing knife-switch of band |
| CN110412455A (en) * | 2019-07-11 | 2019-11-05 | 上海工程技术大学 | A kind of switch testing circuitry and switch testing equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150719 Granted publication date: 20060927 |
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| EXPY | Termination of patent right or utility model |