CN102507746A - Automatic switching device of ultrasonic signal channels - Google Patents
Automatic switching device of ultrasonic signal channels Download PDFInfo
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- CN102507746A CN102507746A CN2011103102215A CN201110310221A CN102507746A CN 102507746 A CN102507746 A CN 102507746A CN 2011103102215 A CN2011103102215 A CN 2011103102215A CN 201110310221 A CN201110310221 A CN 201110310221A CN 102507746 A CN102507746 A CN 102507746A
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Abstract
The embodiment of the invention discloses an automatic switching device of ultrasonic signal channels, which comprises a control module, an ultrasonic electronic module and an ultrasonic channel switching module. The automatic switching device of the ultrasonic signal channels is characterized in that: when online detection is carried out on wheels of a locomotive, the control module sends external triggering information generated by movement of the wheels to the ultrasonic electronic module, and then the ultrasonic electronic module generates an exciting signal for exciting an ultrasonic wave probe to work. Meanwhile, the control module sends channel switching information to the ultrasonic channel switching module, so that the ultrasonic channel switching module conducts the needed ultrasonic channel, and the exciting signal sent by the ultrasonic electronic module and a received probe echo signal realize detection by the conducted ultrasonic channel. The ultrasonic channel switching module automatically switches numbered ultrasonic electronic channels on the ultrasonic electronic module, thereby realizing connection of fewer ultrasonic electronic channels with lots of ultrasonic wave probes, accomplishing automatic detection of the whole wheels, and saving cost.
Description
Technical field
The present invention relates to the technical field of locomotive wheel line flaw detection, particularly a kind of ultrasound signal path automatic switching control equipment.
Background technology
At present; What the online detection of locomotive wheel was adopted usually is that the form that the polytype array ultrasonic probe makes up realizes the detection of dynamic to wheel; Wherein each ultrasonic probe all disposes a ultrasonic passage; The ultrasound wave that this ultrasonic probe produces gets into inside wheel through wheel tread, is used to realize the UT (Ultrasonic Testing) to locomotive wheel.When locomotive passed through detection zone, along with the motion of wheel on ultrasonic probe, the array ultrasonic probe combination of disposing ultrasonic passage realized the UT (Ultrasonic Testing) to whole one week of wheel automatically.Yet, during online detection, in order to realize to the wheel rim in whole one week of wheel and the covering of spoke; The ultrasonic probe quantity that needs is huge unusually; Therefore the ultrasonic port number that needs also is unusual huge, thereby the volume of ultrasonic electronic equipment also can increase thereupon, causes cost to improve.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of ultrasound signal path automatic switching control equipment, specific embodiments is following:
A kind of ultrasound signal path automatic switching control equipment comprises:
Produce the control module of control information, said control information comprises at least: external trigger information, coding back passage handover information; Said control module will produce said external trigger information and send to ultrasonic electronics module after the information that receives the wheel position sensor, produce said coding back passage handover information simultaneously and send it to ultrasonic channel switching module;
Switch the ultrasonic channel switching module of ultrasonic passage according to the said coding back passage handover information that receives, wherein, said passage handover information comprises: moment that passage switches and in the numbering of this ultrasonic passage that need open constantly;
After receiving said external trigger information, produce the pumping signal of excitation ultrasound ripple probe work; And the said ultrasonic passage of said pumping signal through switched conductive be sent to said ultrasonic probe, and gather the ultrasonic electronics module of the echoed signal that said ultrasonic probe that the said ultrasonic passage through conducting returns produces.Wherein, contain the information of representing wheel fault in the said echoed signal.
Preferably, said control module comprises:
According to the motion of wheel between detection zone; After receiving wheel position information, produce the FPGA signal processing unit of external trigger information and passage handover information; The said passage handover information that said FPGA signal processing unit will produce sends to the CPLD signal processing unit, and the said external trigger information that produces is sent to ultrasonic electronics module;
Receive the passage handover information that the FPGA signal processing unit sends, and send to the CPLD signal processing unit of ultrasonic channel switching module after said passage handover information encoded.
Preferably, said ultrasonic electronics module comprises:
Receive external trigger information that said control module sends and said external trigger information sent to the ultrasonic electronic control module of a plurality of ultrasonic electronic passages;
Ultrasonic electronic passage according to the said external trigger information and executing corresponding operating that receives.
Preferably, said ultrasonic electronic passage comprises:
Produce the said pumping signal that encourages said ultrasonic probe work after receiving said external trigger information, and said pumping signal is sent to the excitation signal generator spare of said ultrasonic probe through the said ultrasonic passage of switched conductive;
The signal receiver spare of the echoed signal of the said ultrasonic probe that reception is returned through the said ultrasonic passage of conducting.Wherein, each the excitation signal generator spare on the said ultrasonic electronics module is connected with its corresponding hyperchannel switch boards respectively through coaxial cable with signal receiver spare.
Preferably, said ultrasonic channel switching module comprises:
The ultrasonic preposition backboard of installation channel switching control plate, hyperchannel switch boards;
Receive passage handover information behind the coding that said control module sends, and said coding back passage handover information is decoded, according to the passage switching control plate of probe passage switching on the said decoding back passage handover information control hyperchannel switch boards;
Contain a plurality of ultrasonic passage that links to each other through coaxial interface with a plurality of ultrasonic probes in surface, according to the control of said passage switching control plate, with the ultrasonic passage conducting of needs, the hyperchannel switch boards of unwanted ultrasonic pathway closure; After the ultrasonic passage conducting; Said pumping signal is sent to said ultrasonic probe through the ultrasonic passage of said conducting; Encourage said ultrasonic probe to produce ultrasound wave and detect a flaw, and the ultrasonic passage of the echoed signal that produces through conducting fed back to said ultrasonic electronics module.Wherein, a plurality of pin type straight hole slots are arranged on the said ultrasonic preposition backboard, said passage switching control plate and said hyperchannel switch boards are plugged on the said ultrasonic preposition backboard through said pin type straight hole slot.Simultaneously, in order to realize effective flaw detection of locomotive wheel, the array length that all ultrasonic probes that said hyperchannel switch boards connects are formed is not less than maximum wheel circumference.
Preferably, said passage switching control plate comprises:
Receive passage handover information behind the coding that said control module sends, and the CPLD chip that said coding back passage handover information is decoded;
Drive the relay on the hyperchannel switch boards according to the decoded passage handover information of CPLD chip, the relay that needs are opened is opened the Darlington transistor of the cut-off that need not open.
Preferably, said hyperchannel switch boards comprises:
According to the driving of Darlington transistor, with the probe passage conducting of corresponding needs, the relay of unwanted probe pathway closure;
By the probe passage that said relay controls conducting or cuts out, ultrasonic probe is used for flaw detection through the probe passage generation ultrasonic signal of said conducting, and the echoed signal that ultrasonic probe is produced sends to ultrasonic electronics module.
The disclosed ultrasound signal path automatic switching control equipment of the embodiment of the invention; Be applied in the locomotive wheel line flaw detection system; Each ultrasonic electronics module with pumping signal send to its corresponding hyperchannel switch boards that is connected a plurality of ultrasonic passages on; The ultrasonic passage that the hyperchannel switch boards is opened according to passage handover information conducting needs; Close the ultrasonic passage that need not open, make the ultrasonic passage excitation ultrasonic probe of pumping signal through conducting send ultrasound wave and detect a flaw, and the ultrasonic passage of the echoed signal that ultrasonic probe is produced through conducting sends to ultrasonic electronics module.Said ultrasound signal path automatic switching control equipment is through the automatic switchover of ultrasonic channel switching module to the hyperchannel switch boards; Realized that less ultrasonic electronic passage is connected with a large amount of ultrasonic probes; Accomplish the automatic flaw detection of whole wheel; Dwindled the quantity and the volume of ultrasonic electronic passage, dwindled the volume of line flaw detection detection system, and further solved owing to the high problem of the more cost that causes of ultrasonic electronic number of channels.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural drawing of the disclosed a kind of pumping signal generation channel multiplexing device of the embodiment of the invention;
Fig. 2 is the disclosed ultrasonic electronics module structural drawing of the embodiment of the invention;
Fig. 3 is the disclosed ultrasonic channel switching module structural drawing of the embodiment of the invention;
Fig. 4 is the connection synoptic diagram of each several part on the disclosed ultrasonic channel switching module of the embodiment of the invention;
Fig. 5 is the disclosed pumping signal generation of an embodiment of the invention channel module and the synoptic diagram that is connected of hyperchannel switch boards.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The present invention is a kind of pumping signal generation channel multiplexing device of realizing the locomotive wheel on-line detecting system; Be used for realizing the demand of little space, high performance-price ratio through the mode of pumping signal generation channel multiplexing; Its structure is as shown in Figure 1; Comprise: control module 1, ultrasonic electronics module 2, ultrasonic channel switching module 3, wherein:
Control module 1 is used for, and produces control information, and said control information comprises at least: external trigger information, coding back passage handover information; The said external trigger information that said control module 1 will produce after the information that receives the wheel position sensor sends to ultrasonic electronics module 2, produces said coding back passage handover information simultaneously and sends it to ultrasonic channel switching module 3;
Ultrasonic channel switching module 3 is used for, and switches ultrasonic passage according to the said coding back passage handover information that receives;
In the present embodiment, control module 1 comprises on-site programmable gate array FPGA signal processing unit 11 and complex programmable logic device (CPLD) signal processing unit 12, and the two carries out signal Processing jointly.Wherein, FPGA signal processing unit 11 is responsible for the computing of outside thimble sensor signal; Be used for according to the motion of wheel between detection zone; After receiving wheel position information, produce external trigger information and passage handover information, wherein, said passage handover information comprises the moment of passage switching and in the numbering of this ultrasonic passage that need open constantly; The said passage handover information that said FPGA signal processing unit 11 will produce sends to CPLD signal processing unit 12, and the said external trigger information that will produce simultaneously sends to said ultrasonic electronics module 2; Said CPLD signal processing unit 12 is responsible for the Code And Decode of multiplexer channel handover information; It is after receiving the passage handover information; Send to ultrasonic channel switching module 3 after said passage handover information encoded, both completion signal processing tasks that cooperatively interact of said FPGA signal processing unit 11 and said CPLD signal processing unit 12.In concrete implementation process; When locomotive wheel gets between detection zone; When being arranged on the induction thimble between detection zone under the pressure wheel, the proximity transducer of thimble below is excited, with producing a pulse signal that is similar to square wave; This signal gets into the said FPGA signal processing unit 11 in the said control module 1 through level conversion.This pulse is the square wave delay time signal; 1/2 position of this delay time signal promptly is the center of said pulse; Said FPGA signal processing unit 11 obtains comprising the moment of passage switching and the passage handover information of the required ultrasonic channel number of opening of this moment through the processing to this delay time signal.Said FPGA signal processing unit 11 sends outer triggering signal and gives said ultrasonic electronics module 2 in the center of said delay time signal; Simultaneously; Said FPGA signal processing unit 11 sends said passage handover information and gives said CPLD signal processing unit 12; 12 pairs of said passage handover informations of said CPLD signal processing unit are encoded, and the passage handover information after will encoding sends to said ultrasonic channel switching module 3.
The structural representation of the disclosed ultrasonic electronics module 2 of present embodiment is as shown in Figure 2, comprises ultrasonic electronic control module 21 and ultrasonic electronic passage 22.Said ultrasonic electronic control module 21 is used to receive the external trigger information of said control module transmission and said external trigger information is sent to a plurality of ultrasonic electronic passages 22, and said ultrasonic electronic passage 22 is used for according to the said external trigger information and executing corresponding operating that receives.Simultaneously, said ultrasonic electronic passage 22 comprises excitation signal generator spare 221 and signal receiver spare 222.Wherein, Said excitation signal generator spare 221 is used to receive the external trigger information that said FPGA signal processing unit 11 sends; And after receiving said external trigger information, produce pumping signal, and the said ultrasonic passage of said pumping signal through switched conductive is sent to said ultrasonic probe; Said pumping signal is used to encourage ultrasonic probe to send ultrasound wave, realizes the flaw detection of automobile; Said signal receiver spare 222 is used to receive the echoed signal of the said ultrasonic probe that the said ultrasonic passage through conducting returns, and wherein, said echoed signal contains the information of representing wheel fault.
The disclosed ultrasonic channel switching module 3 of present embodiment links to each other with control module 1, and it is as shown in Figure 3 that it forms structure, and what it was concrete consists of: ultrasonic preposition backboard 31, passage switching control plate 32, hyperchannel switch boards 33.Wherein, on the ultrasonic preposition backboard 31 a plurality of slots are arranged, like 32 pin straight hole slots, be used for pegging graft a passage switching control plate 32 and many hyperchannel switch boards 33, it is as shown in Figure 4 that it connects synoptic diagram.By the control of passage switching control plate 32 realizations to hyperchannel switch boards 33.Simultaneously; Said passage switching control plate 32 comprises complex programmable logic device (CPLD) chip 321 and Darlington transistor 322; Said CPLD chip is used to receive passage handover information behind the coding that said control module sends; And said coding back passage handover information decoded; Said Darlington transistor 322 is used for driving the relay 331 on the said hyperchannel switch boards 33 according to said CPLD chip 321 decoded passage handover informations, and the relay 331 that needs are opened is opened, and the relay 331 that need not open cuts out.Said hyperchannel switch boards 33 comprises relay 331 and ultrasonic passage 332, and said relay 331 is used for the driving according to said Darlington transistor 322, and with ultrasonic passage 332 conductings of corresponding needs, unwanted ultrasonic passage 332 is closed; Said ultrasonic passage 332 is controlled conductings by said relay 331 or is closed, and ultrasonic probe is used for flaw detection through the ultrasonic passage 332 generation ultrasonic signals of said conducting, and the echoed signal that ultrasonic probe is produced sends to ultrasonic electronics module 2.In order to guarantee that locomotive wheel is realized complete flaw detection, the array length that all ultrasonic probes of said hyperchannel switch boards 33 are formed is not less than maximum wheel circumference.Simultaneously, each the ultrasonic electronic passage 22 on the said ultrasonic electronics module 2 is connected with its corresponding hyperchannel switch boards 33 respectively through coaxial cable, and it is as shown in Figure 5 that it connects synoptic diagram.In concrete implementation process; Said passage switching control plate 32 receives passage handover information behind the coding that said CPLD signal processing unit 12 sends to ultrasonic channel switching module 3; The passage handover information is decoded behind 321 pairs of codings that receive of complex programmable logic device (CPLD) chip on the passage switching control plate 32; And according to many Darlington transistors 322 on decoded this plate of passage handover information control, and through the relay 331 on the activation bit control hyperchannel switch boards 33 of Darlington transistor 322.Have on every hyperchannel switch boards 33 a plurality of relays 331 and with a plurality of relay 331 corresponding ultrasonic passages 332, the action of relay 331 is fast, the mechanical life of use is long, has reached 10
8The inferior order of magnitude in the process of transmission signals, can effectively shield external interference simultaneously.A plurality of relays 331 on the hyperchannel switch boards 33 are controlled corresponding a plurality of ultrasonic passages 332 with it respectively, according to the control of passage switching control plate 32, the ultrasonic passage 332 that needs excite are opened, and no ultrasonic passage 332 is closed.
This ultrasound signal path automatic switching control equipment is placed on the interior detection line of track; The specially designed ultrasonic probe of symmetry is corresponding continuous with the hyperchannel switch boards 33 on this ultrasound signal path automatic switching control equipment on the track of the left and right sides; Because this ultrasonic probe combination array total length is not less than maximum wheel circumference, so the interface quantity of hyperchannel switch boards 33 must satisfy the number of ports of ultrasonic probe.In order accurately to respond to the wheel due in, between detection zone, designed the induction thimble structure, and proximity transducer has been set below thimble.The concrete workflow of this ultrasound signal path automatic switching control equipment is: the locomotive wheel of being tested enters between detection zone; Depress thimble; The proximity transducer of thimble below is excited; Produce pulse signal, this signal gets into the FPGA signal processing unit 11 in the control module 1 through level conversion.This pulse is the square wave delay time signal, and 1/2 position of this delay time signal promptly is the center of this pulse signal.FPGA signal processing unit 11 sends outer triggering signal and gives ultrasonic electronics module 2 in said center; Simultaneously; FPGA signal processing unit 11 is according to received pulse signal; Calculate the correct time of ultrasonic external trigger, and synchronometer calculates the ultrasonic channel number number of this required switching of moment, will comprise the correct time of said triggering and the ultrasonic channel number number of needs switching and send to CPLD signal processing unit 12 as the passage handover information; Encoded by 12 pairs of these passage handover informations of said CPLD signal processing unit, the back passage handover information of will encoding then sends to ultrasonic channel switching module 3.After each ultrasonic electronic control module 21 on the ultrasonic electronics module 2 receives external trigger information, produce the excitation ultrasonic probe and produce hyperacoustic pumping signal.Simultaneously; The passage handover information sent to the passage switching control plate 32 in the ultrasonic channel switching module 3 after CPLD signal processing unit 12 will be encoded; The passage handover information is decoded behind 321 pairs of codings that receive of CPLD chip in the passage switching control plate 32, and the driving of the Darlington transistor 322 on this plate of the decoded passage handover information control of foundation, and a plurality of relays that link to each other with Darlington transistor 331 are arranged on every hyperchannel switch boards 33; According to passage handover information after the decoding that receives; The conducting of control Darlington transistor 322 and the closed control that realizes relay corresponding on the hyperchannel switch boards 33 331 with Darlington transistor, when Darlington transistor is driven conducting, the relay conducting corresponding with it; And then, ultrasonic passage 332 conductings corresponding with relay 331.Excitation signal generator spare 221 in the ultrasonic electronics module 2 sends to ultrasonic probe with the ultrasonic passage 332 of the pumping signal that produces through conducting; Ultrasonic probe is after the excitation that receives pumping signal; Produce the wheel that ultrasonic signal is transmitted to needs detection; Be used to carry out the wheel flaw detection; And produce the echoed signal of expression wheel fault, the ultrasonic passage 332 of said echoed signal through conducting sent to the signal receiver spare 222 in the ultrasonic electronics module 2, thereby accomplished flaw detection locomotive wheel.
Simultaneously; For the ultrasonic passage 332 that does not need conducting, according to the closed relay 331 corresponding of passage handover information with it, and then the closed ultrasonic passage 332 corresponding with it; Thereby launch in the probe passage of avoiding ultrasound wave never need open, testing process is caused interference.
In implementation process; If this number of ports can not satisfy the quantity of probe channel interface; Then to consider to take the circumstances into consideration to add a plurality of these pumping signal generation channel multiplexing devices; Control module 1 between each multiplexer connects through the cable of band screen layer, and through control module 1 each multiplexer is carried out valid function.
Simultaneously, for the demarcation state of ultrasonic probe, same enable manual is switched ultrasonic passage.Under this kind embodiment; The user can be through manual operation control module 1; The passage handover information is given ultrasonic channel switching module 3 after making control module 1 issue corresponding codes, and said coding back passage handover information is opened needed ultrasonic passage, and has closed unwanted ultrasonic passage.Simultaneously, ultrasonic electronics module 2 produces continuous pumping signal automatically, and this pumping signal is sent to ultrasonic passage.The ultrasonic passage of ultrasonic probe through conducting can produce ultrasound wave and detect a flaw, and gather the echoed signal of representing wheel fault after receiving pumping signal under the effect of pumping signal.
At this ultrasound signal path automatic switching control equipment; Each excitation signal generator spare 221 is connected with a hyperchannel switch boards 33 with signal receiver spare 222; Be connected and a plurality of ultrasonic passage on each piece hyperchannel switch boards 33 is all corresponding with ultrasonic probe, thereby an excitation signal generator spare 221 is corresponding with a plurality of ultrasonic probes with signal receiver spare 222.Said ultrasound signal path automatic switching control equipment is through the automatic switchover of ultrasonic channel switching module to the hyperchannel switch boards; Realized that less ultrasonic electronic passage is connected with a large amount of ultrasonic probes; Accomplish the automatic flaw detection of whole wheel; Dwindled the quantity and the volume of ultrasonic electronic passage, dwindled the volume of line flaw detection detection system, and further solved owing to the high problem of the more cost that causes of ultrasonic electronic number of channels.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (12)
1. a ultrasound signal path automatic switching control equipment is characterized in that, comprising:
Produce the control module of control information, said control information comprises at least: external trigger information, coding back passage handover information; Said control module will produce said external trigger information and send to ultrasonic electronics module after the information that receives the wheel position sensor, produce said coding back passage handover information simultaneously and send it to ultrasonic channel switching module;
Switch the ultrasonic channel switching module of ultrasonic passage according to the said coding back passage handover information that receives;
After receiving said external trigger information, produce the pumping signal of excitation ultrasound ripple probe work; And the said ultrasonic passage of said pumping signal through switched conductive be sent to said ultrasonic probe, and gather the ultrasonic electronics module of the echoed signal that said ultrasonic probe that the said ultrasonic passage through conducting returns produces.
2. ultrasound signal path automatic switching control equipment according to claim 1 is characterized in that, said control module comprises:
According to the motion of wheel between detection zone; After receiving wheel position information, produce the on-site programmable gate array FPGA signal processing unit of external trigger information and passage handover information; The said passage handover information that said on-site programmable gate array FPGA signal processing unit will produce sends to the complex programmable logic device (CPLD) signal processing unit, and the said external trigger information that produces is sent to ultrasonic electronics module;
Receive the passage handover information that the on-site programmable gate array FPGA signal processing unit sends, and send to the complex programmable logic device (CPLD) signal processing unit of ultrasonic channel switching module after said passage handover information encoded.
3. ultrasound signal path automatic switching control equipment according to claim 1 is characterized in that, said ultrasonic electronics module comprises:
Receive external trigger information that said control module sends and said external trigger information sent to the ultrasonic electronic control module of a plurality of ultrasonic electronic passages;
Ultrasonic electronic passage according to the said external trigger information and executing corresponding operating that receives.
4. ultrasound signal path automatic switching control equipment according to claim 3 is characterized in that, said ultrasonic electronic passage comprises:
Produce the said pumping signal that encourages said ultrasonic probe work after receiving said external trigger information, and said pumping signal is sent to the excitation signal generator spare of said ultrasonic probe through the said ultrasonic passage of switched conductive;
The signal receiver spare of the echoed signal of the said ultrasonic probe that reception is returned through the said ultrasonic passage of conducting.
5. ultrasound signal path automatic switching control equipment according to claim 1 is characterized in that, said ultrasonic channel switching module comprises:
The ultrasonic preposition backboard of installation channel switching control plate, hyperchannel switch boards;
Receive passage handover information behind the coding that said control module sends, and said coding back passage handover information is decoded, according to the passage switching control plate of ultrasonic passage switching on the said decoding back passage handover information control hyperchannel switch boards;
Contain a plurality of ultrasonic passage that links to each other through coaxial interface with a plurality of ultrasonic probes in surface, according to the control of said passage switching control plate, with the ultrasonic passage conducting of needs, the hyperchannel switch boards of unwanted ultrasonic pathway closure; After the ultrasonic passage conducting; Said pumping signal is sent to said ultrasonic probe through the ultrasonic passage of said conducting; Encourage said ultrasonic probe to produce ultrasound wave and detect a flaw, and the ultrasonic passage of the echoed signal that produces through conducting fed back to said ultrasonic electronics module.
6. ultrasound signal path automatic switching control equipment according to claim 5; It is characterized in that; A plurality of pin type straight hole slots are arranged on the said ultrasonic preposition backboard, and said passage switching control plate and said hyperchannel switch boards are plugged on the said ultrasonic preposition backboard through said pin type straight hole slot.
7. ultrasound signal path automatic switching control equipment according to claim 5 is characterized in that, said passage switching control plate comprises:
Receive passage handover information behind the coding that said control module sends, and the CPLD chip that said coding back passage handover information is decoded;
Drive the relay on the hyperchannel switch boards according to the decoded passage handover information of CPLD chip, the relay that needs are opened is opened the Darlington transistor of the cut-off that need not open.
8. ultrasound signal path automatic switching control equipment according to claim 5 is characterized in that, said hyperchannel switch boards comprises:
According to the driving of Darlington transistor, with the ultrasonic passage conducting of corresponding needs, the relay of unwanted ultrasonic pathway closure;
By the control conducting of said relay or the ultrasonic passage of closing; Ultrasonic probe is sent to surveyed area with the ultrasonic passage of the ultrasound wave that produces through said conducting and is used for flaw detection, and the ultrasonic passage of the echoed signal that ultrasonic probe is produced through said conducting sends to ultrasonic electronics module.
9. ultrasound signal path automatic switching control equipment according to claim 5 is characterized in that, the array length that all ultrasonic probes that said hyperchannel switch boards connects are formed is not less than maximum wheel circumference.
10. ultrasound signal path automatic switching control equipment according to claim 1 is characterized in that, said passage handover information comprises:
Moment that passage switches and in the numbering of this ultrasonic passage that need open constantly.
11. ultrasound signal path automatic switching control equipment according to claim 1 is characterized in that said echoed signal contains the information of representing wheel fault.
12. ultrasound signal path automatic switching control equipment according to claim 1; It is characterized in that each the excitation signal generator spare on the said ultrasonic electronics module is connected with its corresponding hyperchannel switch boards respectively through coaxial cable with signal receiver spare.
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| CN2011103102215A CN102507746A (en) | 2011-10-13 | 2011-10-13 | Automatic switching device of ultrasonic signal channels |
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| CN2011103102215A CN102507746A (en) | 2011-10-13 | 2011-10-13 | Automatic switching device of ultrasonic signal channels |
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| CN102507746A true CN102507746A (en) | 2012-06-20 |
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| CN2011103102215A Pending CN102507746A (en) | 2011-10-13 | 2011-10-13 | Automatic switching device of ultrasonic signal channels |
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| CN102854249A (en) * | 2012-09-28 | 2013-01-02 | 北京交通大学 | Controlled-type multichannel ultrasonic flaw detection device and controlled-type multichannel ultrasonic flaw detection method |
| CN102980944A (en) * | 2012-11-13 | 2013-03-20 | 上海交通大学 | System and method for rotor system on-line health monitoring |
| CN107132282A (en) * | 2017-06-26 | 2017-09-05 | 北京海冬青机电设备有限公司 | The automatic detection device and method of a kind of wheel tread wheel rim electromagnetic coupled ultrasound |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102854249A (en) * | 2012-09-28 | 2013-01-02 | 北京交通大学 | Controlled-type multichannel ultrasonic flaw detection device and controlled-type multichannel ultrasonic flaw detection method |
| CN102980944A (en) * | 2012-11-13 | 2013-03-20 | 上海交通大学 | System and method for rotor system on-line health monitoring |
| CN102980944B (en) * | 2012-11-13 | 2014-12-24 | 上海交通大学 | System and method for rotor system on-line health monitoring |
| CN107132282A (en) * | 2017-06-26 | 2017-09-05 | 北京海冬青机电设备有限公司 | The automatic detection device and method of a kind of wheel tread wheel rim electromagnetic coupled ultrasound |
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Application publication date: 20120620 |