CN202974953U - Ultrasonic inspection device for electric power steel members - Google Patents
Ultrasonic inspection device for electric power steel members Download PDFInfo
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- CN202974953U CN202974953U CN 201220592200 CN201220592200U CN202974953U CN 202974953 U CN202974953 U CN 202974953U CN 201220592200 CN201220592200 CN 201220592200 CN 201220592200 U CN201220592200 U CN 201220592200U CN 202974953 U CN202974953 U CN 202974953U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 238000007689 inspection Methods 0.000 title abstract 6
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000002604 ultrasonography Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 235000015429 Mirabilis expansa Nutrition 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000013536 miso Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
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Abstract
The utility model discloses an ultrasonic inspection device for electric power steel members. The ultrasonic inspection device is composed of a transmitting sensor (1), a transmitting circuit (2), a receiving sensor (3), a receiving amplification circuit (4), an echo signal processing circuit (5), a singlechip control circuit (6) and a power supply, wherein a 555 time-base integrated circuit of which the working frequency is 40kHz is used as the transmitting circuit (2); a master control chip of the singlechip control circuit (6) specifically is AT89C52, the receiving amplification circuit (4) specifically is a 40kHz band-pass filter circuit, and specifically uses an MXA4167 high-speed operation amplifier; the transmitting circuit (2) specifically is an MAX232 single-power level conversion chip; an ultrasonic transmitting head specifically is a TCT40-16 probe of which the resonant frequency is 40kHz, and an ultrasonic receiving head specifically is an RCT40-16 probe. In the ultrasonic inspection device, the influence of environment temperature variation on the transmission speed is eliminated effectively by a temperature detection circuit, and by adopting a delay receiving technology, crosstalk signals are eliminated effectively, and the inspection accuracy and the inspection sensitivity are improved further.
Description
Technical field
The utility model relates to the electromagnetic acoustic detection technique, specifically a kind of electric power steel member supersonic detection device.
Background technology
Ultrasonic guided wave detection technology is a kind of emerging Dynamic Non-Destruction Measurement, need not the pointwise scanning, once can detect one flat plate or a segment pipe, has advantages of that detection efficiency is high.
Ultrasonic ranging is a kind of tradition and practical non-contact measurement method, compare with laser, eddy current and radio distance-measuring method, have advantages of that the factors such as the ambient light of not being subjected to and electromagnetic field affect, also has certain adaptive faculty in rugged surroundings, and simple in structure, cost is low, therefore is widely used aspect the location in Industry Control, construction account, robot.
If electromagnetic acoustic and guided wave technology are integrated one, bring into play its advantage separately, so just can realize non-contacting fast detecting, this has broad application prospects in industrial circle.People expect to obtain the good electromagnetic ultrasonic detection probe of a kind of technique effect.
The utility model content
The purpose of this utility model is to provide a kind of electric power steel member supersonic detection device, has the advantages that structural design is simple, fillip is strong, receiving sensitivity is high, can carry out the detection of electric power member slab, electric power pylon and large diameter pipeline etc.
The utility model specifically provides a kind of electric power steel member supersonic detection device, and it is by emission sensor 1, radiating circuit 2, receiving sensor 3, reception amplifying circuit 4, echo signal processing circuit 5 and single chip machine controlling circuit 6, electric power generating composition; Wherein: emission sensor 1, radiating circuit 2, single chip machine controlling circuit 6, echo signal processing circuit 5, reception amplifying circuit 4 receiving sensors 3 are connected respectively successively; Also be connected with respectively ultrasound wave emitting head, ultrasound wave Receiver on radiating circuit 2 and reception amplifying circuit 4; It is characterized in that:
Single chip machine controlling circuit 6 produces 6-16 40kHz transponder pulse and is used for driving emission sensor 1, and motivates ultrasound wave and propagate in air, meets barrier and reflects and return and realize testing process;
The principle that receiving sensor 3 is changed by piezoelectricity, to convert electric signal to by the echoed signal that barrier returns, because this signal amplitude is the 3-18 millivolt, therefore must carry out low noise amplification by reception amplifying circuit 4 echoed signal is amplified to certain amplitude, receive amplifying circuit 4 and be specially the 40kHz bandwidth-limited circuit, specifically use the MX4167 high speed operation amplifier; Then pass through echo signal processing circuit 5 filtering interfering compositions, and convert square-wave signal to by echo signal processing circuit 5, deliver to the control processing that single chip machine controlling circuit 6 carries out time measurement and distance.
Single-chip microcomputer goes out mistiming t according to impulse ejection time and the Time Calculation that receives echo, i.e. ultrasound wave time of propagating in air, and by formula (101):
S=c*t/2 (101)
Calculate apart from S, in formula, parameter c is the aerial velocity of propagation of ultrasound wave;
It is the TCT40-16 probe of 40kHz that the ultrasound wave emitting head specifically adopts resonant frequency, and the ultrasound wave Receiver is specially the RCT40-16 probe.
Ultrasound wave propagation power and precision in air are directly proportional to frequency, and relatively and the characteristics of minute several ultrasonic frequencies commonly used, preferably getting frequency is 40kHz; 40kHz is interrupted the anti-phase square wave of two-way by one-chip machine port output, and this moment, timer began timing, and signal is delivered to two electrodes of ultrasonic transducer through the MAX232 level transferring chip, can improve hyperacoustic emissive porwer.
Also be provided with display module in described electric power steel member supersonic detection device, it specifically adopts the NOKIA5110LCD display module of SPI communication protocol.
Nokia5110LCD supports multiple serial communication protocol, and we adopt SPI communication protocol.The spi bus system is a kind of synchronous serial Peripheral Interface, and it can make MCU and various peripherals communicate with exchange message with serial mode.4 lines of the general use of spi bus system: the slave of serial time clock line SCK, main frame input/slave output data line MISO, main frame output/slave input data line MOSI and Low level effective is selected line CS.
The Principle of Communication of SPI is very simple, and it is with master-slave mode work, and this pattern has a main equipment and one or more from equipment usually, needs at least 4 lines, in fact 3 also can (during one-way transmission).Wherein CS is whether control chip is selected, that is to say (noble potential or electronegative potential) when only having chip selection signal to be the enable signal of predesignating, and is just effective to the operation of this chip.This just allows to connect a plurality of SPI equipment on same bus become possibility.Next 3 lines of communication just have been responsible for.Communication is completed by exchanges data, will know first that here SPI is serial communication protocol, that is to say that data are transmission of one one.The reason of SCK clock line existence that Here it is provides time clock by SCK, and SDI and SDO complete data transmission based on this pulse.Data output is by the SDO line, and data change when rising edge clock or negative edge, are read at back to back negative edge or rising edge.Complete a data transmission, same principle is also used in input.Like this, on the change of at least 8 clock signals (upper edge and lower edge for once), just can complete the transmission of 8 bit data.Physical circuit figure as shown in Figure 3.
Also be provided with digital temperature sensor DS18B20 and temperature compensation means in described electric power steel member supersonic detection device.
The utility model utilizes temperature sensing circuit effectively to eliminate the impact of variation of ambient temperature on velocity of propagation; Aspect the blanking of blind area, adopt to postpone reception technique, effectively eliminated string around signal, further improved precision and the sensitivity of picking up survey.
In order to overcome the interference of external temperature environment, we adopt digital temperature sensor DS18B20, and a unique line interface only needs a Tiaokou line communication multiple spot ability.The programmable resolution of temperature sensor be 9 ~ 12 megadyne temperature degree to be converted to 12 bit digital form maximal values be 750 milliseconds, the digital thermometer of describing this DS18B20 provides 9 to 12 (programmable device temperature readings.Information is sent to/from DS18B20 by 1 line interface, so single-chip microcomputer only has a Tiaokou line to be connected with DS18B20.For read-write and temperature transition can from data line acquisition energy itself, not need external power supply.Because the sequence number that comprises a uniqueness of each DS18B20, a plurality of DS18B20 can be present in a bus simultaneously.
Description of drawings
The vertical view of Fig. 1 electromagnetic ultrasonic probe (magnet top carbon steel coupon do not draw);
Fig. 2 ultrasonic transmit circuit figure;
Fig. 3 Nokia5110 display circuit part key wiring diagram;
Fig. 4 electric power steel member Ultrasonic Detection processing technological flow block diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of electric power steel member supersonic detection device, it is by emission sensor 1, radiating circuit 2, receiving sensor 3, reception amplifying circuit 4, echo signal processing circuit 5 and single chip machine controlling circuit 6, electric power generating composition; Wherein: emission sensor 1, radiating circuit 2, single chip machine controlling circuit 6, echo signal processing circuit 5, reception amplifying circuit 4 receiving sensors 3 are connected respectively successively; Also be connected with respectively ultrasound wave emitting head, ultrasound wave Receiver on radiating circuit 2 and reception amplifying circuit 4; It is characterized in that:
Single chip machine controlling circuit 6 produces 6-16 40kHz transponder pulse and is used for driving emission sensor 1, and motivates ultrasound wave and propagate in air, meets barrier and reflects and return and realize testing process;
The principle that receiving sensor 3 is changed by piezoelectricity, to convert electric signal to by the echoed signal that barrier returns, because this signal amplitude is the 3-18 millivolt, therefore must carry out low noise amplification by reception amplifying circuit 4 echoed signal is amplified to certain amplitude, receive amplifying circuit 4 and be specially the 40kHz bandwidth-limited circuit, specifically use the MX4167 high speed operation amplifier; Then pass through echo signal processing circuit 5 filtering interfering compositions, and convert square-wave signal to by echo signal processing circuit 5, deliver to the control processing that single chip machine controlling circuit 6 carries out time measurement and distance.
Single-chip microcomputer goes out mistiming t according to impulse ejection time and the Time Calculation that receives echo, i.e. ultrasound wave time of propagating in air, and by formula (101):
S=c*t/2 (101)
Calculate apart from S, in formula, parameter c is the aerial velocity of propagation of ultrasound wave;
It is the TCT40-16 probe of 40kHz that the ultrasound wave emitting head specifically adopts resonant frequency, and the ultrasound wave Receiver is specially the RCT40-16 probe.
Ultrasound wave propagation power and precision in air are directly proportional to frequency, and relatively and the characteristics of minute several ultrasonic frequencies commonly used, preferably getting frequency is 40kHz; 40kHz is interrupted the anti-phase square wave of two-way by one-chip machine port output, and this moment, timer began timing, and signal is delivered to two electrodes of ultrasonic transducer through the MAX232 level transferring chip, can improve hyperacoustic emissive porwer.
Also be provided with display module in described electric power steel member supersonic detection device, it specifically adopts the NOKIA5110LCD display module of SPI communication protocol.
Nokia5110LCD supports multiple serial communication protocol, and we adopt SPI communication protocol.The spi bus system is a kind of synchronous serial Peripheral Interface, and it can make MCU and various peripherals communicate with exchange message with serial mode.4 lines of the general use of spi bus system: the slave of serial time clock line SCK, main frame input/slave output data line MISO, main frame output/slave input data line MOSI and Low level effective is selected line CS.
The Principle of Communication of SPI is very simple, and it is with master-slave mode work, and this pattern has a main equipment and one or more from equipment usually, needs at least 4 lines, in fact 3 also can (during one-way transmission).Wherein CS is whether control chip is selected, that is to say (noble potential or electronegative potential) when only having chip selection signal to be the enable signal of predesignating, and is just effective to the operation of this chip.This just allows to connect a plurality of SPI equipment on same bus become possibility.Next 3 lines of communication just have been responsible for.Communication is completed by exchanges data, will know first that here SPI is serial communication protocol, that is to say that data are transmission of one one.The reason of SCK clock line existence that Here it is provides time clock by SCK, and SDI and SDO complete data transmission based on this pulse.Data output is by the SDO line, and data change when rising edge clock or negative edge, are read at back to back negative edge or rising edge.Complete a data transmission, same principle is also used in input.Like this, on the change of at least 8 clock signals (upper edge and lower edge for once), just can complete the transmission of 8 bit data.Physical circuit figure as shown in Figure 3.
Also be provided with digital temperature sensor DS18B20 in described electric power steel member supersonic detection device.
The present embodiment utilizes temperature sensing circuit effectively to eliminate the impact of variation of ambient temperature on velocity of propagation; Aspect the blanking of blind area, postpone reception technique by adopting on software, effectively eliminated string around signal, further improved precision and the sensitivity of picking up survey.
In order to overcome the interference of external temperature environment, we adopt digital temperature sensor DS18B20, and a unique line interface only needs a Tiaokou line communication multiple spot ability.The programmable resolution of temperature sensor be 9 ~ 12 megadyne temperature degree to be converted to 12 bit digital form maximal values be 750 milliseconds, the digital thermometer of describing this DS18B20 provides 9 to 12 (programmable device temperature readings.Information is sent to/from DS18B20 by 1 line interface, so single-chip microcomputer only has a Tiaokou line to be connected with DS18B20.For read-write and temperature transition can from data line acquisition energy itself, not need external power supply.Because the sequence number that comprises a uniqueness of each DS18B20, a plurality of DS18B20 can be present in a bus simultaneously.
Claims (3)
1. electric power steel member supersonic detection device, its by emission sensor (1), radiating circuit (2), receiving sensor (3), receive amplifying circuit (4), echo signal processing circuit (5) and single chip machine controlling circuit (6), electric power generating composition; Wherein: emission sensor (1), radiating circuit (2), single chip machine controlling circuit (6), echo signal processing circuit (5), reception amplifying circuit (4) receiving sensor (3) are connected respectively successively; Also be connected with respectively ultrasound wave emitting head, ultrasound wave Receiver on radiating circuit (2) and reception amplifying circuit (4); It is characterized in that:
Radiating circuit (2) is that a frequency of operation is 555 time-base integrated circuits of 40kHz; The main control chip of single chip machine controlling circuit (6) is specially AT89C52;
Receive amplifying circuit (4) and be specially the 40kHz bandwidth-limited circuit, specifically use the MX4167 high speed operation amplifier;
Radiating circuit (2) is specially MAX232 single supply level transferring chip;
It is the TCT40-16 probe of 40kHz that the ultrasound wave emitting head specifically adopts resonant frequency, and the ultrasound wave Receiver is specially the RCT40-16 probe.
2. according to the described electric power steel of claim 1 member supersonic detection device, it is characterized in that: also be provided with display module in described electric power steel member supersonic detection device, it specifically adopts the NOKIA5110LCD display module of SPI communication protocol.
3. according to the described electric power steel of claim 1 or 2 member supersonic detection device, it is characterized in that: also be provided with digital temperature sensor DS18B20 and temperature compensation means in described electric power steel member supersonic detection device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220592200 CN202974953U (en) | 2012-11-11 | 2012-11-11 | Ultrasonic inspection device for electric power steel members |
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| CN 201220592200 CN202974953U (en) | 2012-11-11 | 2012-11-11 | Ultrasonic inspection device for electric power steel members |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076396A (en) * | 2012-11-11 | 2013-05-01 | 国家电网公司 | Electric power steel member ultrasonic detection apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076396A (en) * | 2012-11-11 | 2013-05-01 | 国家电网公司 | Electric power steel member ultrasonic detection apparatus |
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