X-ray synchronization system in fluoroscopic photography technology

Abstract

The utility model discloses an X-ray synchronization system in a fluoroscopic photography technology, relates to the technical field of X-ray imaging, and solves the problem that different signal panels are incompatible with a high-voltage generator in the prior art. Comprising a microprocessor, and a generator preparation completion state detection circuit, a generator allowed exposure signal circuit, a hand brake detection and control circuit, a pedal detection and control circuit, a detector allowed exposure circuit, a request exposure signal circuit and a serial port communication circuit which are connected with the microprocessor, the system can be connected with flat panel detectors with different signal requirements and high-voltage generators with different signal requirements, pulse perspective can be accurately controlled, X-rays can be accurately controlled in a time window of windowing of the detectors, the frame rate can be accurately controlled, and the system can be connected with different high-voltage generators and detectors.

Description

Technical Field

[0001] The present application relates to the technical field of X-ray imaging, and in particular to an X-ray synchronization system in fluoroscopic photography technology. Background Art

[0002] The X-ray source assembly (generator and tube) and the flat-panel detector (FPD), serving as the X-ray emission source and receiver, respectively, are the core components of an X-ray imaging system. Before X-ray emission, the high-voltage generator must be primed (filament current heating and rotating anode startup). After the generator is primed, the FPD must clear the dark current. During the X-ray emission process, the FPD waits for charge integration. After integration, the X-rays are stopped and the image is read out and transmitted. Any radiation during this readout process can produce artifacts. Therefore, synchronization between the generator and FPD is a major challenge. Existing solutions involve modifying the Buck driver interface circuit to achieve synchronization between the high-voltage generator and detector. Different detector designs also require different PCB designs.

[0003] The main drawbacks are:

[0004] 1. Different brands of detectors require different FPD_REQ voltages. Thales requires +5V, iRay requires 24V, and Kangzhong requires +12V.

[0005] 2. The FPDENABLE signal level returned by the detector is incompatible with the generator's requirements. Utility Model Content

[0006] The purpose of the present application is to overcome the incompatibility problem between different signal panels and high-voltage generators in the prior art and to provide an X-ray synchronization system in fluoroscopic photography technology.

[0007] Specifically, the X-ray synchronization system in the fluoroscopic photography technology includes a microprocessor, which is electrically connected to a generator preparation completion status detection circuit, a generator exposure permission signal circuit, a handbrake detection and control circuit, a foot pedal detection and control circuit, a detector exposure permission circuit, an exposure request signal circuit and a serial communication circuit.

[0008] In some possible implementations, the generator preparation completion state detection circuit includes a first optocoupler, the photodetector emitter of the first optocoupler is electrically connected to the microprocessor, the photodetector emitter of the first optocoupler is connected to a first voltage source through a first resistor, the photodetector collector of the first optocoupler is grounded, the LED positive electrode of the first optocoupler is connected to a second resistor, the end of the second resistor away from the first optocoupler is connected to the first pin of the first port, the end of the second resistor away from the first optocoupler is also connected to at least two second voltage sources through a first voltage selection dip switch, the LED negative electrode of the first optocoupler is connected to the second pin of the first port through a first light-emitting diode, and the third pin of the first port is grounded.

[0009] In some possible implementations, the generator allows the exposure signal circuit to include a second optocoupler, the LED positive electrode of the second optocoupler is connected to a third voltage source through a third resistor, the LED negative electrode of the second optocoupler is electrically connected to a microprocessor, the photodetector emitter of the second optocoupler is connected to a fourth resistor, the end of the fourth resistor away from the second optocoupler is connected to the first pin of the second port, the end of the fourth resistor away from the second optocoupler is also connected to at least two fourth voltage sources through a second voltage selection dip switch, the photodetector collector of the second optocoupler is connected to the second pin of the second port through a second light-emitting diode, and the third pin of the second port is grounded.

[0010] In some possible implementations, the handbrake detection and control circuit includes a third optocoupler, a fourth optocoupler, a fifth optocoupler and a sixth optocoupler, wherein the LED positive electrode of the third optocoupler is connected to a fifth voltage source through a fifth resistor, the LED negative electrode of the third optocoupler is electrically connected to a microprocessor, the photodetector emitter of the third optocoupler is connected to the first pin of the third port through a sixth resistor, the photodetector collector of the third optocoupler is connected to the third pin of the third port through a third light-emitting diode, the LED positive electrode of the fourth optocoupler is connected to the sixth voltage source through a seventh resistor, the LED negative electrode of the fourth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the fourth optocoupler is connected to the second pin of the third port through an eighth resistor, and the photodetector collector of the fourth optocoupler is connected to the third pin of the third port through a fourth light-emitting diode. The emitter of the photodetector of the fifth optocoupler is electrically connected to the microprocessor, and the emitter of the photodetector of the fifth optocoupler is also connected to the seventh voltage source through the ninth resistor. The collector of the photodetector of the fifth optocoupler is grounded. The anode of the LED of the fifth optocoupler is connected to the eighth voltage source through the tenth resistor. The cathode of the LED of the fifth optocoupler is connected to the second pin of the fourth port through the fifth light-emitting diode. The emitter of the photodetector of the sixth optocoupler is electrically connected to the microprocessor, and the emitter of the photodetector of the sixth optocoupler is also connected to the ninth voltage source through the eleventh resistor. The collector of the photodetector of the sixth optocoupler is grounded. The anode of the LED of the sixth optocoupler is connected to the tenth voltage source through the twelfth resistor. The cathode of the LED of the sixth optocoupler is connected to the first pin of the fourth port through the sixth light-emitting diode. The third pin of the fourth port is grounded.

[0011] In some possible implementations, the pedal detection and control circuit includes a seventh optocoupler and an eighth optocoupler, the LED positive pole of the seventh optocoupler is connected to the eleventh voltage source through a thirteenth resistor, the LED negative pole of the seventh optocoupler is electrically connected to the microprocessor, the photodetector emitter of the seventh optocoupler is connected to the fifth port through a fourteenth resistor, the photodetector collector of the seventh optocoupler is connected to the fifth port through an eighth light-emitting diode, the photodetector emitter of the eighth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the eighth optocoupler is also connected to the twelfth voltage source through a fifteenth resistor, the photodetector collector of the eighth optocoupler is grounded, the LED positive pole of the eighth optocoupler is connected to the thirteenth voltage source through a sixteenth resistor, and the LED negative pole of the eighth optocoupler is connected to the fourth pin of the fourth port through a ninth light-emitting diode.

[0012] In some possible implementations, the detector allows exposure circuit to include a ninth optocoupler, the photodetector emitter of the ninth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the ninth optocoupler is also connected to a fourteenth voltage source through a seventeenth resistor, the photodetector collector of the ninth optocoupler is grounded, the positive pole of the LED of the ninth optocoupler is connected to an eighteenth resistor, the end of the eighteenth resistor away from the ninth optocoupler is connected to the first pin of the sixth port, the end of the eighteenth resistor away from the ninth optocoupler is also connected to at least two fifteenth voltage sources through a third voltage selection dip switch, the negative pole of the LED of the ninth optocoupler is connected to the second pin of the sixth port through a tenth light-emitting diode, and the third pin of the sixth port is grounded.

[0013] In some possible implementations, the exposure request signal circuit includes a tenth optocoupler, the positive electrode of the LED of the tenth optocoupler is connected to a sixteenth voltage source through a nineteenth resistor, the negative electrode of the LED of the tenth optocoupler is electrically connected to a microprocessor, the emitter of the photodetector of the tenth optocoupler is connected to a twentieth resistor, the end of the twentieth resistor away from the tenth optocoupler is connected to the first pin of the seventh port, the end of the twentieth resistor away from the tenth optocoupler is also connected to at least two seventeenth voltage sources through a fourth voltage selection dip switch, the collector of the photodetector of the tenth optocoupler is connected to the second pin of the seventh port through an eleventh light-emitting diode, and the third pin of the seventh port is grounded.

[0014] In some possible implementations, the serial communication circuit includes a serial communication chip, the serial communication chip is electrically connected to the microprocessor, and the serial communication chip is electrically connected to the eighth port via a twenty-first resistor and a twenty-second resistor.

[0015] The present application has the following beneficial effects: the system of the present application can be connected to flat-panel detectors with different signal requirements and high-voltage generators with different signal requirements, can accurately control pulse fluoroscopy, so that X-rays can be accurately controlled within the time window of the detector window, and can accurately control the frame rate. It can be connected to different high-voltage generators and detectors, and can also provide pulse signals for devices that require pulse signals for dark correction of the detector, effectively solving the problem of integration and compatibility of different flat-panel detectors and high-voltage generators in the X-ray system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute a part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a structural block diagram of an X-ray synchronization system in the fluoroscopic photography technology of an embodiment of the present application;

[0019] Figure 2 is a circuit diagram of a generator preparation completion state detection circuit in an X-ray synchronization system in a fluoroscopic photography technology according to an embodiment of the present application;

[0020] Figure 3 1. It is a circuit diagram of a generator exposure permission signal circuit in an X-ray synchronization system in a fluoroscopic photography technology according to an embodiment of the present application;

[0021] Figure 4 is a circuit diagram of a hand brake detection and control circuit in an X-ray synchronization system in a fluoroscopic photography technique according to an embodiment of the present application;

[0022] Figure 5 is a circuit diagram of a foot detection and control circuit in an X-ray synchronization system in a fluoroscopic photography technique according to an embodiment of the present application;

[0023] Figure 6 This is a circuit diagram of a detector exposure permission circuit in an X-ray synchronization system in the fluoroscopic photography technology of an embodiment of the present application;

[0024] Figure 7 is a circuit diagram of an exposure request signal circuit in an X-ray synchronization system in a fluoroscopic photography technique according to an embodiment of the present application;

[0025] Figure 8 is a circuit diagram of a serial communication circuit in an X-ray synchronization system in a fluoroscopic photography technique according to an embodiment of the present application;

[0026] Figure 9 This is a circuit diagram of a +12V power supply module in an X-ray synchronization system in a fluoroscopic photography technique according to an embodiment of the present application;

[0027] Figure 10 This is a circuit diagram of a +5 power supply module in an X-ray synchronization system in the fluoroscopic photography technology of an embodiment of the present application.

[0028] Reference numerals:

[0029] 1. Microprocessor; 2. Generator preparation completion status detection circuit; 3. Generator exposure permission signal circuit; 4. Hand brake detection and control circuit; 5. Foot pedal detection and control circuit; 6. Detector exposure permission circuit; 7. Exposure request signal circuit; 8. Serial communication circuit. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] See also Figure 1 A preferred embodiment of the present application is an X-ray synchronization system in fluoroscopic photography technology, including a microprocessor 1, which is electrically connected to a generator preparation completion status detection circuit 2, a generator exposure permission signal circuit 3, a hand brake detection and control circuit 4, a foot detection and control circuit 5, a detector exposure permission circuit 6, an exposure request signal circuit 7 and a serial communication circuit 8.

[0032] like Figure 2As shown, the generator preparation completion state detection circuit 2 includes a first optocoupler U1, the photodetector emitter of the first optocoupler U1 is electrically connected to the microprocessor 1, the photodetector emitter of the first optocoupler U1 is connected to the first voltage source VCC1 through the first resistor R1, the photodetector collector of the first optocoupler U1 is grounded, the LED positive electrode of the first optocoupler U1 is connected to the second resistor R2, the end of the second resistor R2 away from the first optocoupler U1 is connected to the first pin P1_1 of the first port P1, and the second resistor R2 is away from the first optocoupler U1. One end of 1 is also connected to at least two second voltage sources VCC2 through a first voltage selection dip switch SW1. The cathode of the LED of the first optocoupler U1 is connected to the second pin P1_2 of the first port P1 through the first light-emitting diode D1, and the third pin P1_3 of the first port P1 is grounded, so that the first voltage selection dip switch SW1 can be adjusted according to the signal state required by the generator. For example, if the generator requires a 24V voltage signal, the first voltage selection dip switch SW1 is turned to the ON position. When the generator is ready, 24V is connected to the generator input through the first voltage selection dip switch SW1, the second resistor R2, the first optocoupler U1, and the first light-emitting diode D31 through the second pin P1_2 of the first port P1, and the third pin P1_3 of the first port P1 is grounded to form a loop. The first optocoupler U1 is turned on, and the Gen_Ready signal changes from a high level to a low level. At this time, the first port P1 is connected to the generator, so that the microprocessor 1 can know that the generator is ready.

[0033] like Figure 3As shown, the generator exposure permission signal circuit 3 includes a second optocoupler U2, the LED anode of the second optocoupler U2 is connected to the third voltage source VCC3 through the third resistor R3, the LED cathode of the second optocoupler U2 is electrically connected to the microprocessor 1, and the photodetector emitter of the second optocoupler U2 is connected to the fourth resistor R4, the end of the fourth resistor R4 away from the second optocoupler U2 is connected to the first pin P2_1 of the second port P2, and the end of the fourth resistor R4 away from the second optocoupler U2 is also connected to at least two fourth voltage sources VCC4 through the second voltage selection dial switch SW2. The photodetector collector of the second optocoupler U2 is connected to the second pin P2_2 of the second port P2 through the second light-emitting diode D2, and the third pin P2_3 of the second port P2 is grounded. The second voltage selection dial switch SW2 can be adjusted according to the signal required by the generator. For example: if the high-voltage generator requires two signals, namely, conduction and high-impedance, all the second voltage selection dial switches SW2 are turned to the OFF state, and the synchronization signal is connected to the first pin P2_1 and the second pin P2_2 of the second port. When high-voltage exposure is required, the low-level signal of the Exposure Trigger of the microprocessor 1 is valid, and the second optocoupler U2 is turned on. At this time, it is in a low-resistance state. The Exposure Trigger signal returns to the generator through the fourth resistor R4, the second optocoupler U2, and the second light-emitting diode D2. At this time, the second port P2 is connected to the generator, and the generator can receive the exposure permission signal from the microprocessor 1 and perform exposure.

[0034] like Figure 4As shown, the handbrake detection and control circuit 4 includes a third optocoupler U3, a fourth optocoupler U4, a fifth optocoupler U5 and a sixth optocoupler U6, wherein the LED anode of the third optocoupler U3 is connected to the fifth voltage source VCC5 through the fifth resistor R5, the LED cathode of the third optocoupler U3 is electrically connected to the microprocessor 1, the photodetector emitter of the third optocoupler U3 is connected to the first pin P3_1 of the third port P3 through the sixth resistor R6, the photodetector collector of the third optocoupler U3 is connected to the third pin P3_3 of the third port P3 through the third light emitting diode D3, the LED anode of the fourth optocoupler U4 is connected to the sixth voltage source VCC6 through the seventh resistor R7, and the fourth optocoupler U The cathode of the LED of 4 is electrically connected to the microprocessor 1, the emitter of the photodetector of the fourth optocoupler U4 is connected to the second pin P3_2 of the third port P3 through the eighth resistor R8, the collector of the photodetector of the fourth optocoupler U4 is connected to the third pin P3_3 of the third port P3 through the fourth light-emitting diode D4, the emitter of the photodetector of the fifth optocoupler U5 is electrically connected to the microprocessor 1, the emitter of the photodetector of the fifth optocoupler U5 is further connected to the seventh voltage source VCC7 through the ninth resistor R9, the collector of the photodetector of the fifth optocoupler U5 is grounded, the anode of the LED of the fifth optocoupler U5 is connected to the eighth voltage source VCC8 through the tenth resistor R10, and the L of the fifth optocoupler U5 is connected to the eighth voltage source VCC8. The cathode of ED is connected to the second pin P4_2 of the fourth port P4 through the fifth light-emitting diode D5, the emitter of the photodetector of the sixth optocoupler U6 is electrically connected to the microprocessor 1, the emitter of the photodetector of the sixth optocoupler U6 is further connected to the ninth voltage source VCC9 through the eleventh resistor R11, the collector of the photodetector of the sixth optocoupler U6 is grounded, the anode of the LED of the sixth optocoupler U6 is connected to the tenth voltage source VCC10 through the twelfth resistor R12, the cathode of the LED of the sixth optocoupler U6 is connected to the first pin P4_1 of the fourth port P4 through the sixth light-emitting diode D6, and the third pin P4_3 of the fourth port P4 is grounded, wherein the first pin of the fourth port P4 P4_1 and the third pin P4_3 are connected to level 1 of the external exposure hand switch. When level 1 of the external exposure hand switch is pressed, the first pin P4_1 and the third pin P4_3 of the fourth port P4 are turned on, and the second pin P4_2 and the third pin P4_3 of the fourth port P4 are connected to level 2 of the external exposure hand switch. When level 2 of the external exposure hand switch is pressed, the second pin P4_2 and the third pin P4_3 of the fourth port P4 are turned on, and the third port P3 is connected to a high-voltage generator. In this embodiment, VCC8 = VCC10 = 24V. When level 1 of the external exposure hand switch is pressed, 24V is input to Gnd via the twelfth resistor R12, the sixth optocoupler U6, the sixth light-emitting diode D6, and P4_1 connected to level 1 of the external exposure hand switch, and then P4_3.When the sixth optocoupler U6 is turned on and the microprocessor 1 receives the H_Prep signal, it immediately transmits the Gen_Prep signal, turning on the third optocoupler U3 and transmitting the external exposure hand switch's Level 1 signal to the high-voltage generator via the third port P3. When the external exposure hand switch's Level 2 is pressed, 24V is connected via the tenth resistor R10, the fifth optocoupler U5, the fifth light-emitting diode D5, and the second pin P4_2 of the fourth port P4 to the external exposure hand switch's Level 2 signal, which is then input to Gnd via the third pin P4_3 of the fourth port P4. When the fifth optocoupler U5 is turned on and the microprocessor 1 receives the H_Xray signal, it immediately transmits the Gen_Xray signal, turning on the fourth optocoupler U4 and transmitting the external exposure hand switch's Level 2 signal to the high-voltage generator via the third port P3.

[0035] like Figure 5 As shown, the pedal detection and control circuit 5 includes a seventh optocoupler U7 and an eighth optocoupler U8, the LED positive electrode of the seventh optocoupler U7 is connected to the eleventh voltage source VCC11 through the thirteenth resistor R13, the LED negative electrode of the seventh optocoupler U7 is electrically connected to the microprocessor 1, the photodetector emitter of the seventh optocoupler U7 is connected to the fifth port P5 through the fourteenth resistor R14, the photodetector collector of the seventh optocoupler U7 is connected to the fifth port P5 through the eighth light-emitting diode D8, the photodetector emitter of the eighth optocoupler U8 is electrically connected to the microprocessor 1, the photodetector emitter of the eighth optocoupler U8 is further connected to the twelfth voltage source VCC12 through the fifteenth resistor R15, and the photodetector collector of the eighth optocoupler U8 is grounded. The positive electrode of the LED of the eighth optocoupler U8 is connected to the thirteenth voltage source VCC13 through the sixteenth resistor R16, and the negative electrode of the LED of the eighth optocoupler U8 is connected to the fourth pin P4_4 of the fourth port P4 through the ninth light-emitting diode D9, wherein the fifth port P5 is connected to the high-voltage generator, and the third pin P4_3 and the fourth pin P4_4 of the fourth port P4 are connected to the external pedal. When the external pedal is stepped on, the third pin P4_3 and the fourth pin P4_4 of the fourth port P4 are connected. When the external pedal is stepped on, 24V is connected to the foot switch through the sixteenth resistor R16, the eighth optocoupler U8, the ninth light-emitting diode D9, and the fourth pin P4_4 of the fourth port P4, and is input to Gnd through the third pin P4_3 of the fourth port P4. So that the eighth optocoupler U8 is turned on, after receiving the Foot_SW signal, the microprocessor 1 immediately sends a Fluoro signal to the seventh optocoupler U7, and the seventh optocoupler U7 is turned on, sending the closing command of the external pedal being stepped on to the high-voltage generator through the fifth port P5.

[0036] like Figure 6As shown, the detector exposure permission circuit 6 includes a ninth optocoupler U9, the emitter of the photodetector of the ninth optocoupler U9 is electrically connected to the microprocessor 1, and the emitter of the photodetector of the ninth optocoupler U9 is also connected to a fourteenth voltage source VCC14 via a seventeenth resistor R17. The collector of the photodetector of the ninth optocoupler U9 is grounded. The positive electrode of the LED of the ninth optocoupler U9 is connected to an eighteenth resistor R18. The end of the eighteenth resistor R18 away from the ninth optocoupler U9 is connected to the first pin P6_1 of the sixth port P6. The end of the eighteenth resistor R18 away from the ninth optocoupler U9 is also connected to at least two fifteenth voltage sources VCC15 via a third voltage selection dial switch SW3. The negative electrode of the LED of the ninth optocoupler U9 is connected to the second pin P6_2 of the sixth port P6 via a tenth light-emitting diode D10. The third pin P6_3 of the sixth port P6 is grounded. According to the interface information of the detector, the third voltage selection dial switch SW3 can be turned to the ON position, and the cable communicating with the detector is connected to the second pin P6_2 and the third pin P6_3 of the sixth port P6. When the detector allows exposure, the detector gives a closed signal, and the 5V voltage signal is connected to the eighteenth resistor R18 through the third voltage selection dial switch SW3, and is connected to the third pin P6_3 of the sixth port P6 through the ninth optocoupler U9 and the tenth light-emitting diode D10 through the detector. The ninth optocoupler U9 is turned on. At this time, the FPD ENABLE signal changes from a high level to a low level, and the microprocessor 1 receives a signal to allow exposure.

[0037] like Figure 7As shown, the exposure request signal circuit 7 includes a tenth optocoupler U10, the positive electrode of the LED of the tenth optocoupler U10 is connected to the sixteenth voltage source VCC16 through the nineteenth resistor R19, the negative electrode of the LED of the tenth optocoupler U10 is electrically connected to the microprocessor 1, the emitter of the photodetector of the tenth optocoupler U10 is connected to the twentieth resistor R20, the end of the twentieth resistor R20 away from the tenth optocoupler U10 is connected to the first pin P7_1 of the seventh port P7, the end of the twentieth resistor R20 away from the tenth optocoupler U10 is further connected to at least two seventeenth voltage sources VCC17 through the fourth voltage selection dial switch SW4, and the collector of the photodetector of the tenth optocoupler U10 is connected to the seventh port P7 through the eleventh light-emitting diode D11. The second pin P7_2 of the seventh port P7 is connected, and the third pin P7_3 of the seventh port P7 is grounded. According to the signal requirement of the detector, the signal level can be set by the fourth voltage selection dial switch SW4. For example, when the exposure request of the detector requires a 5V driving signal, the SW1_1 can be turned to the ON position, and the detector is connected to the second pin P7_2 and the third pin P7_3 of the seventh port P7. When the exposure request needs to be sent, the microprocessor 1 gives a low-level valid signal, the tenth optocoupler U10 is turned on, and the 5V voltage signal is connected to the detector through the twentieth resistor R20, the tenth optocoupler U10, and the eleventh light-emitting diode D11, and then connected to Gnd through the third pin P7_3 of the seventh port to form a loop, and the FPD REQ signal is sent.

[0038] like Figure 8 As shown, the serial communication circuit 8 includes a serial communication chip, which is electrically connected to the microprocessor 1. The serial communication chip is electrically connected to the eighth port through the twenty-first resistor and the twenty-second resistor. The serial communication circuit 8 is mainly used to receive working mode instructions and send the current status. The device connected to the eighth port P8 can send commands through serial port instructions, which are converted by the serial communication chip ADM3202 and sent to the microprocessor 1.

[0039] In this embodiment, if Figure 9 and Figure 10 Also shown is a power supply module, wherein Figure 9 This is the circuit diagram of the +12V power module. The power module filters the 24V DC through the first capacitor C1 and the second capacitor C2 and then sends it to the chip TPS54331DR. The output voltage is divided by the twenty-third resistor R23 and the twenty-fourth resistor R24, and the feedback voltage is sent to the chip TPS54331DR to stabilize the output voltage at +12V. Figure 10 This is the circuit diagram of the +5V power supply module. The +12V voltage generates a stable +5V voltage after passing through the linear voltage regulator chip UA7805.

[0040] It should be noted that the second voltage source VCC2, the fourth voltage source VCC4, the fifteenth voltage source VCC15, and the seventeenth voltage source VCC17 can be set to multiple voltages of different voltage values ​​as needed to meet user needs. For example, in this embodiment, voltages of 5V, 12V, and 24V are set. For example, if the detector requires a +5V voltage signal for exposure request, SW4_1 can be turned to the ON position, and the detector is powered by the 5V voltage source, and the detector is connected to P7_2 and P7_3; if the detector requires a +12V voltage signal for exposure request, SW4_2 can be turned to the ON position, and the detector is connected to P7_2 and P7_3; if the detector requires a +12V voltage signal for exposure request, A closed signal can turn all SW4 dip switches to OFF, and the detector is connected to P7_1 and P7_2, wherein the same voltage can be supplied by the same power supply module. In addition, in this embodiment, the first voltage source VCC1, the third voltage source VCC3, the fifth voltage source VCC5, the sixth voltage source VCC6, the seventh voltage source VCC7, the ninth voltage source VCC9, the eleventh voltage source VCC11, the twelfth voltage source VCC12, the fourteenth voltage source VCC14, and the sixteenth voltage source VCC16 are all powered by a +3.3V power supply. The specific voltage value of the voltage source is not limited in this application and can be set according to requirements.

[0041] In this embodiment, the operating mode, frame rate, pulse width, and other parameters of the synchronization device are set using serial port instructions via the serial port communication module. Level 1 of the external exposure hand switch controls preparation for photography or Cine mode, while level 2 of the external exposure hand switch controls exposure. A generator preparation completion status detection circuit 2 detects the Gen_Ready signal indicating the completion of generator preparation. The FPD REQ request signal control device can adjust a dip switch to provide different voltages or on / off signals based on the type of flat panel detector interface. The FPD ENABLE permission exposure signal can be received by adjusting the dip switch to receive the permission exposure signal based on different flat panel detector signals. The Exposure Trigger high-voltage generator permission exposure signal controls when the generator is exposed. The microprocessor 1 is configured to receive serial port instructions and, in accordance with the instructions, detect the external exposure hand switch or external foot pedal signal and prepare the generator. Upon detecting the Gen_Ready signal indicating the completion of generator preparation, it sends an FPD REQ signal to the detector. After waiting for the FPD ENABLE signal from the detector to be enabled, it immediately sends an Exposure Trigger signal to the generator to initiate exposure.

[0042] In this embodiment, when the user presses the external exposure handbrake or steps on the external foot pedal, the microprocessor 1 detects the handbrake or foot pedal command and enables the Gen_Prep, Gen_Xray, or Fluoro signals connected to the high-voltage generator. The generator filament begins preheating, and the rotating anode rotates. When the system receives the Gen_Ready signal indicating that the generator is ready, it sends the FPD REQ exposure request signal to the detector. Once the detector has cleared the field, it sends an exposure permission instruction and opens the window. At this point, the microprocessor 1 receives the FPD ENABLE signal and immediately sends the Exposure Trigger signal to the detector, causing the generator to be exposed. At this point, the entire exposure of the generator falls precisely within the detector's window, allowing precise control of pulsed fluoroscopy, ensuring that the X-rays are accurately controlled within the detector's windowed time window, and accurately controlling the frame rate. Different high-voltage generators and detectors can be connected. Pulse signals can also be provided to devices that require pulse signals for detector dark correction. The problem of integrating different flat-panel detectors and high-voltage generators in an X-ray system is solved. Secondly, in the embodiment, different voltages can be selected through a voltage selection dial switch, so that flat-panel detectors with different signal requirements and high-voltage generators with different signal requirements can be connected.

[0043] The above are only preferred specific implementations of this application; however, the scope of protection of this application is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in this application, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of this application shall be covered by the scope of protection of this application.

Claims

1. An X-ray synchronization system in fluoroscopic photography technology, characterized in that: The microprocessor comprises a generator preparation completion state detection circuit, a generator exposure permission signal circuit, a hand brake detection and control circuit, a foot pedal detection and control circuit, a detector exposure permission circuit, an exposure request signal circuit and a serial communication circuit.

2. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The generator preparation completion state detection circuit includes a first optocoupler, the photodetector emitter of the first optocoupler is electrically connected to the microprocessor, the photodetector emitter of the first optocoupler is connected to a first voltage source through a first resistor, the photodetector collector of the first optocoupler is grounded, the LED positive electrode of the first optocoupler is connected to a second resistor, the end of the second resistor away from the first optocoupler is connected to the first pin of the first port, the end of the second resistor away from the first optocoupler is also connected to at least two second voltage sources through a first voltage selection dip switch, the LED negative electrode of the first optocoupler is connected to the second pin of the first port through a first light-emitting diode, and the third pin of the first port is grounded.

3. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The generator allows exposure signal circuit includes a second optocoupler, the LED positive electrode of the second optocoupler is connected to a third voltage source through a third resistor, the LED negative electrode of the second optocoupler is electrically connected to a microprocessor, the photodetector emitter of the second optocoupler is connected to a fourth resistor, the end of the fourth resistor away from the second optocoupler is connected to the first pin of the second port, the end of the fourth resistor away from the second optocoupler is also connected to at least two fourth voltage sources through a second voltage selection dip switch, the photodetector collector of the second optocoupler is connected to the second pin of the second port through a second light-emitting diode, and the third pin of the second port is grounded.

4. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The handbrake detection and control circuit includes a third optocoupler, a fourth optocoupler, a fifth optocoupler and a sixth optocoupler, wherein the LED positive electrode of the third optocoupler is connected to a fifth voltage source through a fifth resistor, the LED negative electrode of the third optocoupler is electrically connected to the microprocessor, the photodetector emitter of the third optocoupler is connected to the first pin of the third port through a sixth resistor, the photodetector collector of the third optocoupler is connected to the third pin of the third port through a third light-emitting diode, the LED positive electrode of the fourth optocoupler is connected to the sixth voltage source through a seventh resistor, the LED negative electrode of the fourth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the fourth optocoupler is connected to the second pin of the third port through an eighth resistor, the photodetector collector of the fourth optocoupler is connected to the third pin of the third port through a fourth light-emitting diode, and the fifth optocoupler is connected to the sixth voltage source through a seventh resistor. The emitter of the photodetector of the coupler is electrically connected to the microprocessor, the emitter of the photodetector of the fifth optocoupler is also connected to the seventh voltage source through the ninth resistor, the photodetector collector of the fifth optocoupler is grounded, the positive electrode of the LED of the fifth optocoupler is connected to the eighth voltage source through the tenth resistor, the negative electrode of the LED of the fifth optocoupler is connected to the second pin of the fourth port through the fifth light-emitting diode, the emitter of the photodetector of the sixth optocoupler is electrically connected to the microprocessor, the emitter of the photodetector of the sixth optocoupler is also connected to the ninth voltage source through the eleventh resistor, the photodetector collector of the sixth optocoupler is grounded, the positive electrode of the LED of the sixth optocoupler is connected to the tenth voltage source through the twelfth resistor, the negative electrode of the LED of the sixth optocoupler is connected to the first pin of the fourth port through the sixth light-emitting diode, and the third pin of the fourth port is grounded.

5. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The pedal detection and control circuit includes a seventh optocoupler and an eighth optocoupler, the LED positive electrode of the seventh optocoupler is connected to the eleventh voltage source through the thirteenth resistor, the LED negative electrode of the seventh optocoupler is electrically connected to the microprocessor, the photodetector emitter of the seventh optocoupler is connected to the fifth port through the fourteenth resistor, the photodetector collector of the seventh optocoupler is connected to the fifth port through the eighth light-emitting diode, the photodetector emitter of the eighth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the eighth optocoupler is also connected to the twelfth voltage source through the fifteenth resistor, the photodetector collector of the eighth optocoupler is grounded, the LED positive electrode of the eighth optocoupler is connected to the thirteenth voltage source through the sixteenth resistor, and the LED negative electrode of the eighth optocoupler is connected to the fourth pin of the fourth port through the ninth light-emitting diode.

6. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The detector exposure permission circuit includes a ninth optocoupler, the photodetector emitter of the ninth optocoupler is electrically connected to the microprocessor, the photodetector emitter of the ninth optocoupler is also connected to a fourteenth voltage source through a seventeenth resistor, the photodetector collector of the ninth optocoupler is grounded, the positive pole of the LED of the ninth optocoupler is connected to an eighteenth resistor, the end of the eighteenth resistor away from the ninth optocoupler is connected to the first pin of the sixth port, the end of the eighteenth resistor away from the ninth optocoupler is also connected to at least two fifteenth voltage sources through a third voltage selection dip switch, the negative pole of the LED of the ninth optocoupler is connected to the second pin of the sixth port through a tenth light-emitting diode, and the third pin of the sixth port is grounded.

7. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The exposure request signal circuit includes a tenth optocoupler, the positive electrode of the LED of the tenth optocoupler is connected to a sixteenth voltage source through a nineteenth resistor, the negative electrode of the LED of the tenth optocoupler is electrically connected to a microprocessor, the emitter of the photodetector of the tenth optocoupler is connected to a twentieth resistor, the end of the twentieth resistor away from the tenth optocoupler is connected to the first pin of the seventh port, the end of the twentieth resistor away from the tenth optocoupler is also connected to at least two seventeenth voltage sources through a fourth voltage selection dip switch, the collector of the photodetector of the tenth optocoupler is connected to the second pin of the seventh port through an eleventh light-emitting diode, and the third pin of the seventh port is grounded.

8. The X-ray synchronous system in fluoroscopic photography technology according to claim 1, characterized in that: The serial communication circuit includes a serial communication chip, the serial communication chip is electrically connected to the microprocessor, and the serial communication chip is electrically connected to the eighth port through the twenty-first resistor and the twenty-second resistor.

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