CN102854249A - Controlled-type multichannel ultrasonic flaw detection device and controlled-type multichannel ultrasonic flaw detection method - Google Patents
Controlled-type multichannel ultrasonic flaw detection device and controlled-type multichannel ultrasonic flaw detection method Download PDFInfo
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- CN102854249A CN102854249A CN2012103677058A CN201210367705A CN102854249A CN 102854249 A CN102854249 A CN 102854249A CN 2012103677058 A CN2012103677058 A CN 2012103677058A CN 201210367705 A CN201210367705 A CN 201210367705A CN 102854249 A CN102854249 A CN 102854249A
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Abstract
The invention relates to a controlled-type multichannel ultrasonic flaw detection device and a controlled-type multichannel ultrasonic flaw detection method. A sensor detection circuit is combined with a multichannel transmitting-receiving circuit, a corresponding probe is directly controlled to work according to a state detected by a sensor, then a sequence number of the working probe is loaded onto a ultrasonic analog signal received by the probe, and the ultrasonic analog signal is transmitted to a flaw detector host computer through an analog signal wire. The invention provides a controlled-type multichannel ultrasonic flaw detection device, and the controlled-type multichannel ultrasonic flaw detection device is connected with a front end circuit (14) through at least one probe (1) and at least one corresponding sensor (2) and connected with a rear end circuit (15) through an analog signal transmission wire (8). A multichannel flaw detection control signal is transmitted without utilizing a digital signal wire, so that the structure of the device is simplified, the reliability of the device is increased, the flaw detection speed is accelerated, and the controlled-type multichannel ultrasonic flaw detection device is particularly applicable to the situation of the multichannel ultrasonic flaw detection by utilizing external sensors to determine the working probe. The problems of the traditional multichannel ultrasonic flaw detection device that a digital signal input-output circuit is needed and the flaw detection speed is low can be solved.
Description
Technical field
The invention belongs to industrial UT (Ultrasonic Testing) field, particularly a kind of controlled type multichannel ultrasonic failure detector.
Background technology
Multiple path ultrasonic flaw detector is widely used in the industrial automation UT (Ultrasonic Testing).Multichannel instrument has a kind of usage to be: in a Detection Cycles, not all passage is all worked once, but determines specific passage work by sensor signal, and different Detection Cycles can be by the work of difference probe.For example, in the online hyperchannel flaw detection of wheel, the rail both sides are equipped with hundreds of probes, only have wheel to pass through the probe work of position, and after wheel was by the flaw detection district, all probes had all been finished flaw detection work.Take the online hyperchannel flaw detection of wheel as example, traditional multichannel ultrasonic failure detector for this usage comprises wheel position sensing module, preposition hyperchannel emission receiver module and defectoscope main frame, preposition hyperchannel emission receiver module and wheel position sensing module are installed near rail and the probe, are connected with the defectoscope main frame by signal wire.The course of work is: when wheel is popped one's head in by certain, the sensor that should pop one's head in is surveyed, and detectable signal is transferred to the defectoscope main frame, select respective channel work by host computer control hyperchannel emission receiver module again, finish flaw detection work.In this device, defectoscope transceiver circuit module is connected independently to be connected with the defectoscope main frame with sensor detection circuit module.From the working time, at first be that sensor signal is transferred to main frame, by main frame the service aisle signal is transferred back to again the hyperchannel emission receiver module of front end.And these two kinds of signals are digital signal, and the transmission time of the digital signal input/output module that usually adopts is all more than 10us/bit.In use there are two problems in this conventional apparatus: two groups of digital signal transmission lines of (1) needs, increased the complicacy of installing, and reduced the reliability of device.(2) the reciprocal transmission of digital signal has taken most of flaw detection time, has reduced inspection speed, has correspondingly also limited the travel speed of train in the flaw detection.What the present invention adopted is a kind of controlled type multichannel ultrasonic failure detector, and sensor detection circuit and hyperchannel emission receiving circuit are combined, and directly controls the hyperchannel emission by sensor detection signal and receives, and can effectively solve above-mentioned two problems.
Summary of the invention
The present invention is in order to address the above problem, sensor detection circuit and hyperchannel emission receiving circuit are combined, directly control corresponding probe work according to the state that sensor detects, then the sequence number of work probe is loaded on the ultrasound wave simulating signal of probe reception, be transferred to the defectoscope main frame by analog signal line, solving traditional multichannel ultrasonic failure detector needs the problems such as digital signal input and output circuit, inspection speed be low.
The technical solution used in the present invention is, as shown in Figure 1:
A kind of controlled type multichannel ultrasonic failure detector connects front-end circuit 14 by at least one probe 1 with at least one sensor 2 of being connected, and connects back-end circuit 15 by transmission line analog signal 8.
Described probe 1, sensor 2 are connected with front-end circuit 14, front-end circuit 14 comprises and the sensor detection circuit 4 of popping one's head in 1 transceiver circuit that is connected 3, being connected with sensor 2, transceiver circuit 3 is connected with sensor circuit and is connected with preposition FPGA circuit 5, the ultrasonic signal output that transceiver circuit 3 receives is connected with ultrasonic signal amplifying circuit 6, and ultrasonic signal amplifying circuit 6 connects with the SEQ.XFER circuit 7 of being connected.
Controllable gain amplifying circuit 9 in the described back-end circuit 15 is connected with probe SEQ.XFER circuit 7 in the front-end circuit 14 by transmission line analog signal 8, be connected between controllable gain amplifying circuit 9 and analog to digital conversion circuit 11, the master control FPGA circuit 10, master control FPGA circuit 10 is connected with defectoscope CPU and bus interface circuit 12.
In the front-end circuit 14 sensor detection circuit 4 output signals are directly inputted to preposition FPGA circuit 5, determined again corresponding transceiver circuit 3 work of corresponding probe 1 by preposition FPGA circuit 5, synthetic by the output signal of preposition FPGA circuit 5 control probe SEQ.XFER circuit 7 generation coding square waves and ultrasonic signal amplifying circuit 6 simultaneously, be input to by transmission line analog signal 8 in the controllable gain amplifying circuit 9 of back-end circuit 15, composite signal is by analog to digital conversion circuit 11 generating digital signals, then the probe sequence number decoding algorithm 13 of the control program by defectoscope CPU and bus interface circuit 12 sequence number that obtains popping one's head in and the ultrasonic signal of corresponding probe are realized controlled type channel ultrasonic wave inspection.A kind of method of detection of controlled type multichannel ultrasonic failure detector, multiple path ultrasonic flaw detector finish once launch, time of reception and ultrasonic signal collection is called a work period, the time of one-period is divided into the scan control period and receives the transmission period, comprise following steps:
1) in the scan control period, preposition FPGA circuit 5 determines 3 work of which transceiver circuit by the output signal that scans each sensor detection circuit 4, by correspondence probe 1 emission ultrasound wave, finishes the work of scan control period;
2) receiving the transmission period, the ultrasonic signal that returns from inside workpiece is received by transceiver circuit 3, after 6 amplifications of ultrasonic signal amplifying circuit, synthetic with probe SEQ.XFER circuit 7 output signals that generated by preposition FPGA circuit 5 controls, be loaded on the transmission line analog signal 8, receive ultrasonic signal by controllable gain amplifying circuit 9 again, pass through analog to digital conversion circuit 11 after amplifying probe SEQ.XFER signal and ultrasonic signal digitizing, and be transferred in defectoscope CPU and the bus interface circuit 12 by master control FPGA circuit 10, finish receiving the transmission period.
Described finish ultrasonic signal and receive the transmission period after, digitized ultrasonic signal and probe SEQ.XFER signal are decoded by algorithm 13, the digitalized ultrasonic signal with pop one's head in corresponding one by one.
Described multichannel ultrasonic failure detector is operated under a kind of passive controlled mode, only finds out in the situation of needs probe work at sensor 2, and device is finished a flaw detection work period, otherwise device is operated under wait and the query State.
Described multichannel ultrasonic failure detector is operated under a kind of passive controlled mode, is to work under passive slave mode from the sequential instrument, further may further comprise the steps:
A), after instrument was started working, preposition FPGA circuit 5 was operated in scanning sensor signal phase 18 in the front-end circuit 14; After detecting a certain sensor 2 working signals, select the transceiver circuit 3 of corresponding probe 1, then produce a marking signal 19 and probe SEQ.XFER signal 20, and after a set time, produce ultrasound wave trigger pip 21, make radiating circuit 3 produce ultrasound wave 22;
B), back-end circuit 15 is carried out digitizing by analog to digital conversion circuit 11 after receiving the ultrasonic signal that loads the probe SEQ.XFER, recycling probe sequence number decoding algorithm 13 obtain popping one's head in sequence number and ultrasonic signal;
C), then preposition FPGA circuit 5 enters again scanning sensor signal phase 18, waits for the next work period.
The sensor signal that do not need controlled type multichannel ultrasonic failure detector of the present invention to use arrives defectoscope main frame and defectoscope main frame to the digital signal transmission line road between the ultrasound wave transceiver circuit, simplified the structure of device, increased the reliability of device, improve inspection speed, be specially adapted to the situation by the channel ultrasonic wave inspection of external sensor decision work probe.
Description of drawings
Fig. 1 is controlled type multichannel ultrasonic failure detector of the present invention front and back end circuit working theory diagram.
Fig. 2 is the signal transmission sequential chart among the present invention.
Embodiment
Further describe the present invention below in conjunction with embodiment.Scope of the present invention is not subjected to the restriction of these embodiment, and scope of the present invention proposes in claims.
Referring to accompanying drawing 1, generally, the multichannel ultrasonic failure detector by external sensor decision work probe is comprised of probe 1, sensor 2, transceiver circuit 3, sensor detection circuit 4, preposition FPGA circuit 5, ultrasonic signal amplifying circuit 6, controllable gain amplifying circuit 9, master control FPGA circuit 10, analog to digital conversion circuit 11 and defectoscope CPU and bus interface circuit 12.In industrial free of Automatic Ultrasonic Flaw Detector, usually transceiver circuit 3, preposition FPGA circuit 5, ultrasonic signal amplifying circuit 6 are designed to a module, sensor detection circuit 4 is designed to another module, two modules all are installed in and the front-end circuit 14 of popping one's head in 1, sensor 2 is adjacent with workpiece, and remainder designs in the defectoscope main frame of back-end circuit 15.The front and back end circuit part also needs some digital signal transmssion line transmission from the sensor detection circuit to the defectoscope main frame and the control signal from the defectoscope main frame to the ultrasound wave transceiver circuit except using transmission line analog signal 8 transmission ultrasonic signals.
The present invention combines sensor detection circuit 4 and preposition FPGA circuit 5 and ultrasound wave transceiver circuit 3 in front-end circuit 14 and is designed to a module, increased probe SEQ.XFER circuit 7, the probe SEQ.XFER square-wave signal that produces under preposition FPGA circuit 5 controls is loaded on the transmission line analog signal 8 of transmission ultrasonic signal, in back-end circuit 15 analog signal figure after, utilize probe sequence number decoding algorithm 13, the ultrasonic signal that receives and probe are mapped one by one, realize controlled type channel ultrasonic wave inspection.
Multiple path ultrasonic flaw detector finish once launch, time of reception and ultrasonic signal collection is called a work period.The time of one-period is divided into the scan control period and receives the transmission period.In the scan control period, preposition FPGA circuit 5 determines 3 work of which transceiver circuit by the output signal that scans each sensor detection circuit 4, by correspondence probe 1 emission ultrasound wave, finishes the work of scan control period.
Receiving the transmission period, the ultrasonic signal that returns from inside workpiece is received by transceiver circuit 3, after 6 amplifications of ultrasonic signal amplifying circuit, synthetic with probe SEQ.XFER circuit 7 output signals that generated by preposition FPGA circuit 5 controls, be loaded on the transmission line analog signal 8, receive ultrasonic signal by controllable gain amplifying circuit 9 again, pass through analog to digital conversion circuit 11 after amplifying the ultrasonic signal digitizing, and be transferred among the defectoscope CPU12 by master control FPGA circuit 10, finish receiving the transmission period.
Referring to attached Fig. 1 and 2, wherein, the explanation of Fig. 2: 16 scan control periods, 17 receive the transmission period, 18 scanning sensor signals, 19 marking signals, 20 probe SEQ.XFER signals, 21 ultrasound wave trigger pips, 22 ultrasonic signals.
The flow process of each several part work is in the defectoscope: after instrument was started working, preposition FPGA circuit 5 was operated in scanning sensor signal phase 18 in the front-end circuit 14; After detecting a certain sensor 2 working signals, select the transceiver circuit 3 of corresponding probe 1, then produce a marking signal 19 and probe SEQ.XFER signal 20, and after a set time, produce ultrasound wave trigger pip 21, make radiating circuit 3 produce ultrasound wave 22; Back-end circuit 15 is carried out digitizing by analog to digital conversion circuit 11 after receiving the ultrasonic signal that loads the probe SEQ.XFER, recycling probe sequence number decoding algorithm 13 obtain popping one's head in sequence number and ultrasonic signal.Then preposition FPGA circuit 5 enters again scanning sensor signal phase 18, waits for the next work period.On sequential, instrument is operated in passive slave mode duty.
Beneficial effect of the present invention is that multiple path ultrasonic flaw detector combines sensor detection circuit and ultrasound wave front end emission receiving circuit, do not need to use the digital data transmission control signal, simplified the structure of device, increased the reliability of device, improve inspection speed, be specially adapted to the situation by the channel ultrasonic wave inspection of external sensor decision work probe.
Abovely be described with reference to the exemplary embodiment of accompanying drawing to the application.Those skilled in the art should understand that; above-mentioned embodiment only is the example of lifting for illustrative purposes; rather than be used for limiting; all in the application instruction and the claim protection domain under do any modification, be equal to replacement etc., all should be included in the claimed scope of the application.
Claims (8)
1. a controlled type multichannel ultrasonic failure detector is characterized in that, connects front-end circuit (14) by at least one probe (1) with at least one sensor (2) of being connected, and connects back-end circuit (15) by transmission line analog signal (8).
2. controlled type multichannel ultrasonic failure detector according to claim 1, it is characterized in that, described probe (1), sensor (2) is connected with front-end circuit (14), front-end circuit (14) comprises the transceiver circuit (3) that is connected with probe (1), the sensor detection circuit (4) that is connected with sensor (2), transceiver circuit (3) is connected 4 with sensor circuit) be connected with preposition FPGA circuit (5), the ultrasonic signal output that transceiver circuit (3) receives is connected with ultrasonic signal amplifying circuit (6), and ultrasonic signal amplifying circuit (6) connects with the SEQ.XFER circuit (7) of being connected.
3. controlled type multichannel ultrasonic failure detector according to claim 2, it is characterized in that, probe SEQ.XFER circuit (7) in the described front-end circuit (14) is connected by transmission line analog signal (8) with controllable gain amplifying circuit (9) in the back-end circuit (15), be connected between controllable gain amplifying circuit (9) and analog to digital conversion circuit (11), the master control FPGA circuit (10), master control FPGA circuit (10) is connected with defectoscope CPU and bus interface circuit (12).
4. controlled type multichannel ultrasonic failure detector according to claim 1, it is characterized in that, in the front-end circuit (14) sensor detection circuit (4) output signal is directly inputted to preposition FPGA circuit (5), determined again corresponding transceiver circuit (3) work of corresponding probe (1) by preposition FPGA circuit (5), synthetic by the output signal of preposition FPGA circuit (5) control probe SEQ.XFER circuit (7) generation coding square wave and ultrasonic signal amplifying circuit (6) simultaneously, be input to by transmission line analog signal (8) in the controllable gain amplifying circuit (9) of back-end circuit (15), composite signal is by analog to digital conversion circuit (11) generating digital signal, then the probe sequence number decoding algorithm of the control program by defectoscope CPU and bus interface circuit (12) sequence number that obtains popping one's head in and the ultrasonic signal of corresponding probe are realized controlled type channel ultrasonic wave inspection.
5. based on the method for detection of a kind of controlled type multichannel ultrasonic failure detector claimed in claim 1, multiple path ultrasonic flaw detector finish once launch, time of reception and ultrasonic signal collection is called a work period, the time of one-period is divided into the scan control period and receives the transmission period, it is characterized in that, comprise following steps:
1), in the scan control period, preposition FPGA circuit (5) determines that by the output signal of each sensor detection circuit (4) of scanning penetrating receiving circuit (3) by wherein riches all the way works, and by correspondence probe (1) emission ultrasound wave, finish the work of scan control period;
2), receiving the transmission period, the ultrasonic signal that returns from inside workpiece is received by transceiver circuit (3), after ultrasonic signal amplifying circuit (6) amplification, synthetic with probe SEQ.XFER circuit (7) output signal that is generated by preposition FPGA circuit (5) control, be loaded on the transmission line analog signal (8), receive ultrasonic signal by controllable gain amplifying circuit (9) again, pass through analog to digital conversion circuit (11) after amplifying probe SEQ.XFER signal and ultrasonic signal digitizing, and be transferred in defectoscope CPU and the bus interface circuit (12) by master control FPGA circuit (10), finish receiving the transmission period.
6. the method for detection of a kind of controlled type multichannel ultrasonic failure detector according to claim 5, it is characterized in that, described finish ultrasonic signal and receive the transmission period after, digitized ultrasonic signal and probe SEQ.XFER signal are decoded by algorithm, corresponding one by one with probe the digitalized ultrasonic signal.
7. the method for detection of a kind of controlled type multichannel ultrasonic failure detector according to claim 5, it is characterized in that, described multichannel ultrasonic failure detector is operated under a kind of passive controlled mode, only find out in the situation of needs probe work at sensor (2), device is finished a flaw detection work period, otherwise device is operated under wait and the query State.
8. the method for detection of a kind of controlled type multichannel ultrasonic failure detector according to claim 7, it is characterized in that, described multichannel ultrasonic failure detector is operated under a kind of passive controlled mode, to work under passive slave mode from the sequential device, further may further comprise the steps: A), after device was started working, preposition FPGA circuit (5) was operated in scanning sensor signal phase (18) in the front-end circuit (14); After detecting a certain sensor (2) working signal, select the transceiver circuit (3) of corresponding probe (1), then produce a marking signal (19) and probe SEQ.XFER signal (20), and after a set time, produce ultrasound wave trigger pip (21), make radiating circuit (3) produce ultrasound wave (22);
B), back-end circuit (15) is carried out digitizing by analog to digital conversion circuit (11) after receiving the ultrasonic signal that loads the probe SEQ.XFER, recycling probe sequence number decoding algorithm (13) obtain popping one's head in sequence number and ultrasonic signal;
C), then preposition FPGA circuit (5) enters again scanning sensor signal phase (18), waits for the next work period.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104516682A (en) * | 2013-10-04 | 2015-04-15 | 创惟科技股份有限公司 | Ultrasonic data acquisition system, method and ultrasonic receiving device |
| CN111855810A (en) * | 2020-07-20 | 2020-10-30 | 济南大学 | Rail foot damage identification method and system based on recurrent neural network |
| CN111855825A (en) * | 2020-06-28 | 2020-10-30 | 济南大学 | Rail head nuclear injury identification method and system based on BP neural network |
| CN114217090A (en) * | 2021-12-07 | 2022-03-22 | 中国科学院大学 | Sensor control device, ultrasonic velocimeter and ultrasonic velocimetry system |
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| CN102507746A (en) * | 2011-10-13 | 2012-06-20 | 成都主导科技有限责任公司 | Automatic switching device of ultrasonic signal channels |
| CN102670246A (en) * | 2011-03-10 | 2012-09-19 | 富士胶片株式会社 | Ultrasound diagnostic apparatus |
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| CN1478440A (en) * | 2002-06-27 | 2004-03-03 | ������ҽ�ƽ�������˾ | Separation of and used method for transmitting and recieving in ultrasonic scanning |
| CN101788533A (en) * | 2010-04-01 | 2010-07-28 | 西南交通大学 | Self-adapted ultrasonic detector for online train wheel flaw detection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104516682A (en) * | 2013-10-04 | 2015-04-15 | 创惟科技股份有限公司 | Ultrasonic data acquisition system, method and ultrasonic receiving device |
| CN104516682B (en) * | 2013-10-04 | 2018-09-28 | 创惟科技股份有限公司 | ultrasonic data acquisition system and method |
| CN111855825A (en) * | 2020-06-28 | 2020-10-30 | 济南大学 | Rail head nuclear injury identification method and system based on BP neural network |
| CN111855810A (en) * | 2020-07-20 | 2020-10-30 | 济南大学 | Rail foot damage identification method and system based on recurrent neural network |
| CN111855810B (en) * | 2020-07-20 | 2023-02-03 | 济南大学 | Rail foot damage identification method and system based on recurrent neural network |
| CN114217090A (en) * | 2021-12-07 | 2022-03-22 | 中国科学院大学 | Sensor control device, ultrasonic velocimeter and ultrasonic velocimetry system |
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Application publication date: 20130102 |