CN110946601B - Intelligent identification system and method for synchronous signals of flat panel detector - Google Patents
Intelligent identification system and method for synchronous signals of flat panel detector Download PDFInfo
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- CN110946601B CN110946601B CN201911034336.9A CN201911034336A CN110946601B CN 110946601 B CN110946601 B CN 110946601B CN 201911034336 A CN201911034336 A CN 201911034336A CN 110946601 B CN110946601 B CN 110946601B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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Abstract
The invention provides an intelligent identification system for a flat panel detector synchronizing signal, which comprises an X-ray source and a flat panel detector, wherein the X-ray source comprises a bulb, an inversion driving unit, a feedback circuit, a microprocessor, an exposure request signal circuit, a flat panel synchronizing signal detection circuit and a flat panel ready signal detection circuit, the bulb is connected with the inversion driving unit and the feedback circuit, the inversion driving unit and the feedback circuit are connected with the microprocessor, the output end of the microprocessor is connected with the input end of the exposure request signal circuit, and the output end of the exposure request signal circuit is connected with the input end of the flat panel detector. The invention also provides an intelligent identification method for the flat panel detector synchronizing signal. The beneficial effects of the invention are as follows: the intelligent identification of the synchronous signals of the X-ray source and the flat panel detectors of different types is realized, the exposure operation is simplified, and the whole exposure process is simpler.
Description
Technical Field
The invention relates to a flat panel detector, in particular to an intelligent identification system and method for synchronous signals of the flat panel detector.
Background
Digital radiography (Digital Radiography, abbreviated as DR) is a new technology of radiography developed in the 90 th century, and has become the dominant direction of digital radiography technology and is accepted by clinical institutions and imaging specialists in all countries of the world by the remarkable advantages of faster imaging speed, more convenient operation, higher imaging resolution and the like. The technical core of DR is a flat panel detector (FPD (Flat Panel Detector)), FPD is a precise and expensive device, plays a decisive role in imaging quality, and familiarity with detector performance indicators helps us to improve imaging quality and reduce X-ray radiation dose.
Under the condition that the X-ray source and the FPD are in communication (wired or wireless), the exposure mode is that the X-ray source actively sends an exposure request signal to the FPD, the FPD is driven by the control module to finish the emptying of residual charges row by row, the FPD sends a request exposure signal to the X-ray source after the emptying is finished, the X-ray source prepares for exposure, and the X-ray source immediately starts exposure after receiving the FPD request exposure signal. After the exposure is finished, the FPD starts to collect an electric signal proportional to the irradiation intensity of the X-rays, and the image is formed after the signal is processed. In the case of communication, accurate control of timing can achieve good image quality.
Different types of FPDs, different in the request exposure signals (synchronization signals) sent by the FPD to the X-ray source, are commonly known to synchronize in a fixed manner based on the synchronization signals of the X-ray source and the FPD.
Because the synchronization signals of the flat panel detectors of different types and the X-ray source are different, the flat panel detectors cannot be well compatible due to the fact that the flat panel detectors are synchronized in a fixed mode.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an intelligent identification system and method for a synchronous signal of a flat panel detector.
The invention provides an intelligent identification system for a flat panel detector synchronizing signal, which comprises an X-ray source and a flat panel detector, wherein the X-ray source comprises a bulb, an inversion driving unit, a feedback circuit, a microprocessor, an exposure request signal circuit, a flat panel synchronizing signal detection circuit and a flat panel ready signal detection circuit, the bulb is connected with the inversion driving unit and the feedback circuit, the inversion driving unit and the feedback circuit are connected with the microprocessor, the output end of the microprocessor is connected with the input end of the exposure request signal circuit, the output end of the exposure request signal circuit is connected with the input end of the flat panel detector, the output ends of the flat panel detector are respectively connected with the input ends of the flat panel synchronizing signal detection circuit and the flat panel ready signal detection circuit, and the output ends of the flat panel synchronizing signal detection circuit and the flat panel ready signal detection circuit are respectively connected with the input ends of the microprocessor.
As a further improvement of the invention, the intelligent flat panel detector synchronous signal identification system also comprises an upper computer, wherein the microprocessor is connected with a USB-to-serial TTL chip, and the USB-to-serial TTL chip is connected with the upper computer through a USB interface.
As a further improvement of the invention, the number of the flat panel detectors is at least two, the output ends of the exposure request signal circuits are respectively connected with the input end of each flat panel detector, and the output end of each flat panel detector is respectively connected with the input ends of the flat panel synchronous signal detection circuit and the flat panel ready signal detection circuit.
As a further improvement of the invention, the flat panel synchronous signal detection circuit and the flat panel ready signal detection circuit both comprise a photoelectric coupler for electrically isolating the rising edge or falling edge synchronous signal output by the flat panel detector.
The invention also provides an intelligent identification method for the flat panel detector synchronizing signal, which comprises the following steps of:
s1, an X-ray source sends corresponding exposure request synchronous signals to flat panel detectors according to different types;
s2, after the flat panel detector is ready, a corresponding flat panel ready synchronous signal is sent to the X-ray source;
s3, intelligently identifying a corresponding flat-plate ready synchronous signal by the X-ray source;
s4, starting exposure;
s5, ending.
As a further improvement of the invention, the flat panel READY synchronizing signals of the flat panel detector, which are responded to the X-ray source, are respectively BUCKY_CHECK and DR_READY, wherein the BUCKY_CHECK is responded to the flat panel synchronizing signal detection circuit of the X-ray source, the DR_READY is responded to the flat panel READY signal detection circuit of the X-ray source, the BUCKY_CHECK and the DR_READY are both level jump signals of rising edges or falling edges, and when the X-ray source sends out an exposure request synchronizing signal to the flat panel detector, the current BUCKY_CHECK and DR_READY level signals are recorded, and when the levels of the BUCKY_CHECK and the DR_READY are changed, the flat panel READY synchronizing signals are sent out by the flat panel detector.
As a further improvement of the invention, the type of the flat panel detector is selected by the upper computer, and the flat panel detector is transmitted to the microprocessor of the X-ray source through the USB-to-serial TTL chip, the microprocessor of the X-ray source actively transmits a corresponding exposure request synchronous signal to the flat panel detector through the exposure request signal circuit, the exposure request synchronous signal is a level or level jump signal, and the exposure request synchronous signal is converted into a rising edge or falling edge jump signal which can be identified by the microprocessor through the photoelectric coupler of the flat panel synchronous signal detection circuit and the flat panel ready signal detection circuit respectively.
The beneficial effects of the invention are as follows: through the scheme, intelligent identification of the synchronous signals of the X-ray source and the flat panel detectors of different types is realized, and the exposure operation is simplified, so that the whole exposure process is simpler.
Drawings
FIG. 1 is a schematic diagram of a flat panel detector synchronization signal intelligent recognition system according to the present invention.
Fig. 2 is a circuit diagram of a flat panel synchronization signal detection circuit of the intelligent flat panel detector synchronization signal recognition system.
Fig. 3 is a circuit diagram of a flat panel ready signal detection circuit of the intelligent flat panel detector synchronous signal recognition system.
Fig. 4 is a flowchart of a method for intelligently identifying a synchronization signal of a flat panel detector according to the present invention.
Detailed Description
The invention is further described with reference to the following description of the drawings and detailed description.
As shown in fig. 1 to 3, a flat panel detector synchronization signal intelligent recognition system includes an X-ray source 10 and a flat panel detector 20, wherein the X-ray source 10 includes a bulb 101, an inversion driving unit and a feedback circuit 102, a microprocessor 103, an exposure request signal circuit 105, a flat panel synchronization signal detection circuit 106 and a flat panel ready signal detection circuit 107, the bulb 101 is connected with the inversion driving unit and the feedback circuit 102, the inversion driving unit and the feedback circuit 102 are connected with the microprocessor 103, an output end of the microprocessor 103 is connected with an input end of the exposure request signal circuit 105, an output end of the exposure request signal circuit 105 is connected with an input end of the flat panel detector 20, an output end of the flat panel detector 20 is connected with an input end of the flat panel synchronization signal detection circuit 106 and an input end of the flat panel ready signal detection circuit 107, and an output end of the flat panel synchronization signal detection circuit 106 and the flat panel ready signal detection circuit 107 are connected with an input end of the microprocessor 103.
As shown in fig. 1 to 3, the intelligent flat panel detector synchronization signal recognition system further includes an upper computer 30, the microprocessor 103 is connected with a USB-to-serial TTL chip 104, and the USB-to-serial TTL chip 104 is connected with the upper computer 30 through a USB interface 301.
As shown in fig. 1 to 3, there are a plurality of flat panel detectors 20, and the output end of the exposure request signal circuit 105 is connected to the input end of each flat panel detector 20, and the output end of each flat panel detector 20 is connected to the input ends of the flat panel synchronization signal detection circuit 106 and the flat panel ready signal detection circuit 107.
As shown in fig. 1 to 3, the flat panel synchronization signal detection circuit 106 and the flat panel ready signal detection circuit 107 each include a photo coupler that electrically isolates a rising edge or a falling edge synchronization signal output from the flat panel detector 20.
As shown in fig. 4, a method for intelligently identifying a synchronization signal of a flat panel detector, which is implemented by the intelligent identification system for a synchronization signal of a flat panel detector according to any one of the above steps:
s1, the X-ray source 10 sends corresponding exposure request synchronous signals to different types of flat panel detectors 20 according to the different types of flat panel detectors;
s2, after the flat panel detector 20 is ready, a corresponding flat panel ready synchronous signal is sent to the X-ray source 10;
s3, the X-ray source 10 intelligently recognizes corresponding flat-panel ready synchronizing signals;
s4, starting exposure;
s5, ending.
As shown in fig. 2 and 3, the flat panel READY synchronization signals of the flat panel detector 20 in response to the X-ray source 10 are respectively the bus_check and dr_ready, wherein the bus_check is in response to the flat panel synchronization signal detection circuit 106 of the X-ray source 10, the dr_ready is in response to the flat panel READY signal detection circuit 107 of the X-ray source 10, the bus_check and the dr_ready are both rising edge or falling edge level jump signals, and when the X-ray source 10 sends out the exposure request synchronization signal to the flat panel detector 20, the current bus_check and dr_ready level signals are recorded, and when the levels of the bus_check and the dr_ready change, the flat panel detector 20 sends out the flat panel READY synchronization signals.
The type of the flat panel detector 20 is selected by the upper computer 30, and is sent to the microprocessor 103 of the X-ray source 10 by the USB to serial TTL chip 104, the microprocessor 103 of the X-ray source 10 actively sends a corresponding exposure request synchronization signal to the flat panel detector 20 by the exposure request signal circuit 105, wherein the exposure request synchronization signal is a level or level jump signal, and the exposure request synchronization signal is converted into a rising edge or falling edge jump signal which can be identified by the microprocessor 103 by the photo-coupler of the flat panel synchronization signal detection circuit 106 and the flat panel ready signal detection circuit 107 respectively.
The host computer 30 is preferably a notebook computer.
The upper computer software selects different flat plate types and modes, the microprocessor 103 of the lower computer sends out corresponding exposure request signals (the signals are level or level jump signals) to the FPD according to the selected flat plate types and modes, and then waits for the flat panel detector 20 to respond to the request exposure signals sent to the X-ray source 10, and the signals are converted into rising edge or falling edge jump signals which can be identified by the microprocessor 103 through optical coupling; upon recognizing the FPD request exposure signal, the microprocessor 103 controls the driving circuit to start the exposure operation.
Fig. 2 shows a panel synchronization signal detection circuit 106, fig. 3 shows a panel READY signal detection circuit 107, in which, the panel detectors 20 respond to the request exposure signal (synchronization signal) to the X-ray source 10, these two signals are level jump signals of rising edge or falling edge, and different panel detectors may have both signals or only one signal, and the signal identification method is that after the X-ray source 10 actively sends the exposure request signal to the panel detector 20, the current BUCKY_CHECK and DR_READY level signals are recorded, when the levels of BUCKY_CHECK and DR_READY are changed, that is, the panel detector 20 sends the request exposure signal (synchronization signal), in fig. 2, 3, JP36 and JP38 are pin-arranging, and the two panel detectors can be connected by jumper caps according to different panel output interfaces, wherein, CKY4_S1, BUCKY4_S2 and BUY3_S1, BUCKY3_S2 are connected to the panel detectors respectively; e7 is a photoelectric coupler for electrically isolating rising edge or falling edge synchronous signals output by the flat panel detector 10, D105 and D106 are diodes, and JP37 and JP39 are reserved jumper interfaces.
Examples of the invention are as follows:
1. the upper computer 30 selects the type PD1 of the flat panel detector 20, presses a preliminary exposure button, the X-ray source 10 actively sends a corresponding exposure request signal to the flat panel detector 20, then the flat panel detector 20 sends a request exposure signal to the X-ray source 10 after preparation is completed, exposure is prepared, and the X-ray source 10 immediately starts exposure after receiving the exposure request signal of the flat panel detector 20 of the PD1 type.
2. The upper computer 30 selects the type PD2 of the flat panel detector 20, presses a preliminary exposure button, the X-ray source 10 actively sends a corresponding exposure request signal to the flat panel detector 20, then the flat panel detector 20 sends a request exposure signal to the X-ray source 10 after preparation is completed, exposure is prepared, and the X-ray source 10 immediately starts exposure after receiving the exposure request signal of the flat panel detector 20 of the PD2 type.
The intelligent identification system and the intelligent identification method for the flat panel detector synchronizing signals realize intelligent identification of the X-ray source and the flat panel detector synchronizing signals of different types, simplify the exposure operation and simplify the whole exposure process.
The intelligent identification system and method for the flat panel detector synchronizing signal provided by the invention have the following advantages:
1. the problem that the existing X-ray source is incompatible with the signal synchronization of different types of flat panel detectors is solved.
2. The exposure operation is simplified, so that the whole exposure process is simpler.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (4)
1. A method for intelligently identifying a synchronous signal of a flat panel detector is characterized by comprising the following steps of: the intelligent identification system comprises an X-ray source and a flat panel detector, wherein the X-ray source comprises a bulb tube, an inversion driving unit, a feedback circuit, a microprocessor, an exposure request signal circuit, a flat panel synchronization signal detection circuit and a flat panel ready signal detection circuit, the bulb tube is connected with the inversion driving unit and the feedback circuit, the inversion driving unit and the feedback circuit are connected with the microprocessor, the output end of the microprocessor is connected with the input end of the exposure request signal circuit, the output end of the exposure request signal circuit is connected with the input end of the flat panel detector, the output end of the flat panel detector is respectively connected with the input ends of the flat panel synchronization signal detection circuit and the flat panel ready signal detection circuit, and the output ends of the flat panel synchronization signal detection circuit and the flat panel ready signal detection circuit are respectively connected with the input end of the microprocessor;
the intelligent identification system for the flat panel detector synchronizing signals comprises the following steps:
s1, an X-ray source sends corresponding exposure request synchronous signals to flat panel detectors according to different types;
s2, after the flat panel detector is ready, a corresponding flat panel ready synchronous signal is sent to the X-ray source;
s3, intelligently identifying a corresponding flat-plate ready synchronous signal by the X-ray source;
s4, starting exposure;
s5, ending;
the flat panel detector responds to the flat panel READY synchronizing signals of the X-ray source to be BUCKY_CHECK and DR_READY respectively, wherein BUCKY_CHECK responds to the flat panel synchronizing signal detection circuit of the X-ray source, DR_READY responds to the flat panel READY signal detection circuit of the X-ray source, BUCKY_CHECK and DR_READY are level jump signals of rising edge or falling edge, after the X-ray source sends out exposure request synchronizing signals to the flat panel detector, current BUCKY_CHECK and DR_READY level signals are recorded, and when the levels of BUCKY_CHECK and DR_READY change, the flat panel detector sends out the flat panel READY synchronizing signals;
the type of the flat panel detector is selected by the upper computer, and the flat panel detector is transmitted to the microprocessor of the X-ray source through the USB-to-serial TTL chip, the microprocessor of the X-ray source actively transmits a corresponding exposure request synchronous signal to the flat panel detector through the exposure request signal circuit, the exposure request synchronous signal is a level or level jump signal, and the exposure request synchronous signal is converted into a rising edge or falling edge jump signal which can be identified by the microprocessor through the photoelectric coupler of the flat panel synchronous signal detection circuit and the flat panel ready signal detection circuit respectively.
2. The intelligent identification method for the flat panel detector synchronizing signals according to claim 1, wherein the method comprises the following steps: the intelligent flat panel detector synchronous signal identification system also comprises an upper computer, wherein the microprocessor is connected with a USB-to-serial TTL chip, and the USB-to-serial TTL chip is connected with the upper computer through a USB interface.
3. The intelligent identification method for the flat panel detector synchronizing signals according to claim 1, wherein the method comprises the following steps: the flat panel detector comprises at least two flat panel detectors, wherein the output ends of the exposure request signal circuits are respectively connected with the input ends of each flat panel detector, and the output ends of each flat panel detector are respectively connected with the input ends of the flat panel synchronous signal detection circuit and the flat panel ready signal detection circuit.
4. The intelligent identification method for the flat panel detector synchronizing signals according to claim 1, wherein the method comprises the following steps: the flat-plate synchronous signal detection circuit and the flat-plate ready signal detection circuit comprise photoelectric couplers for electrically isolating rising edge or falling edge synchronous signals output by the flat-plate detector.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668553A (en) * | 2009-11-25 | 2012-09-12 | 虚拟成像股份有限公司 | Portable radiation imaging system |
| CN203072242U (en) * | 2012-12-12 | 2013-07-17 | 上海奕瑞光电子科技有限公司 | Exposure synchronization box and exposure synchronization system |
| CN103371843A (en) * | 2012-04-19 | 2013-10-30 | 佳能株式会社 | Radiant ray generation control apparatus, radiation imaging system, and method for controlling the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102668553A (en) * | 2009-11-25 | 2012-09-12 | 虚拟成像股份有限公司 | Portable radiation imaging system |
| CN103371843A (en) * | 2012-04-19 | 2013-10-30 | 佳能株式会社 | Radiant ray generation control apparatus, radiation imaging system, and method for controlling the same |
| CN203072242U (en) * | 2012-12-12 | 2013-07-17 | 上海奕瑞光电子科技有限公司 | Exposure synchronization box and exposure synchronization system |
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