Fault fusion control matching circuit and fault fusion system

Abstract

The utility model discloses a tomographic fusion control matching circuit and a tomographic fusion system, and relates to the technical field of automatic control. The circuit comprises a motor encoder signal input module, a signal conversion module and an exposure output module, wherein the motor encoder signal input module is used for acquiring a PWM pulse signal containing motor rotation position information; the signal conversion module comprises a first accumulation module and a second accumulation module; the input end of the first accumulation module is connected to the motor encoder signal input module, and the first accumulation module is used for performing first frequency division on the PWM pulse signal to generate a first frequency division signal; the output end of the first accumulation module is connected to the input end of the second accumulation module, and the second accumulation module is used for performing second frequency division on the first frequency division signal to generate a second frequency division signal; and the exposure output module is connected to the output end of the second accumulation module so as to output an exposure signal at the rising edge of the second frequency division signal.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic control, and particularly relates to a tomosynthesis control matching circuit and a tomosynthesis system. Background Art

[0002] Tomosynthesis technology is an upgrade implemented on traditional digital subtraction imaging (DR) devices, aiming to obtain high-quality tomographic images through multi-angle shooting. For a fixed scanning position, this technology adjusts the positions of the radiation source and the detector to perform multi-angle shooting, and finally fuses these image data to generate tomographic images. During the control process of the entire system, the positions of the radiation source and the detector need to be precisely controlled to avoid the influence of motion interference on the image quality. The exposure of the radiation source and the image acquisition time of the detector must be accurately matched. Any minor time difference or position deviation may result in blurred images or artifacts, thereby affecting the accuracy of tomographic images. Traditional digital subtraction imaging devices are mainly used for static shooting and cannot meet the high-precision requirements for dynamic shooting in tomosynthesis technology. Such devices are prone to motion artifacts during dynamic shooting, affecting the quality of the final image. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide a high-precision tomosynthesis control matching circuit.

[0004] According to a first aspect, in one embodiment, a tomosynthesis control matching circuit is provided, including:

[0005] A motor encoder signal input module, configured to obtain a PWM pulse signal containing motor rotation position information;

[0006] A signal conversion module, the signal conversion module includes a first accumulation module and a second accumulation module; the input end of the first accumulation module is connected to the motor encoder signal input module, and the first accumulation module is configured to perform a first frequency division on the PWM pulse signal to generate a first frequency division signal; the output end of the first accumulation module is connected to the input end of the second accumulation module, and the second accumulation module is configured to perform a second frequency division on the first frequency division signal to generate a second frequency division signal;

[0007] An exposure output module, the exposure output module is connected to the output end of the second accumulation module to output an exposure signal at the rising edge of the second frequency division signal.

[0008] In one embodiment, the motor encoder signal input module includes a motor encoder and an optocoupler; the motor encoder is used to obtain a PWM pulse signal containing the rotational position of the motor; the optocoupler includes an anode port, a cathode port, a transmitter port, and a collector port. The anode port of the optocoupler is used to obtain a conduction voltage. The cathode of the optocoupler is connected to the motor encoder. The transmitter port of the optocoupler is connected to the signal conversion module to output the PWM pulse signal. The collector port of the optocoupler is used to obtain a working voltage.

[0009] In one embodiment, the first accumulation module includes a first number of flip - flops, and the second accumulation module includes a second number of flip - flops; in the first accumulation module, the flip - flops are connected in series in sequence. Among them, the clock port of the first flip - flop in the sequential series is used as the input end of the first accumulation module, and the output port of the last flip - flop in the sequential series is used as the output end of the first accumulation module; in the second accumulation module, the flip - flops are connected in series in sequence. Among them, the clock port of the first flip - flop in the sequential series is used as the input end of the second accumulation module, and the output port of the last flip - flop in the sequential series is used as the output end of the second accumulation module.

[0010] In one embodiment, the flip - flop includes a D flip - flop or a JK flip - flop.

[0011] In one embodiment, the first accumulation module includes a first D flip - flop, a second D flip - flop, a third D flip - flop, and a fourth D flip - flop. Each D flip - flop includes a clock port, an input port, a reset input port, and an output port; the clock port of the first D flip - flop is used as the input end of the first accumulation module. The input port of the first D flip - flop is connected to the reset input port of the first D flip - flop. The reset input port of the first D flip - flop is also connected to the clock port of the second D flip - flop. The input port of the second D flip - flop is connected to the reset input port of the second D flip - flop. The reset input port of the second D flip - flop is also connected to the clock port of the third D flip - flop. The input port of the third D flip - flop is connected to the reset input port of the third D flip - flop. The reset input port of the third D flip - flop is also connected to the clock port of the fourth D flip - flop. The input port of the fourth D flip - flop is connected to the reset input port of the fourth D flip - flop. The output port of the fourth D flip - flop is used as the output end of the first accumulation module.

[0012] In one embodiment, the second accumulation module includes a fifth D flip-flop, a sixth D flip-flop, and a seventh D flip-flop. Each D flip-flop includes a clock port, an input port, a reset input port, and an output port. The clock port of the fifth D flip-flop serves as the input end of the second accumulation module. The input port of the fifth D flip-flop is connected to the reset input port of the fifth D flip-flop. The reset input port of the fifth D flip-flop is further connected to the clock port of the sixth D flip-flop. The input port of the sixth D flip-flop is connected to the reset input port of the sixth D flip-flop. The reset input port of the sixth D flip-flop is further connected to the clock port of the seventh D flip-flop. The input port of the seventh D flip-flop is connected to the reset input port of the seventh D flip-flop. The output port of the seventh D flip-flop serves as the output end of the second accumulation module.

[0013] In one embodiment, the first accumulation module includes a first D flip-flop, a second D flip-flop, a third D flip-flop, a fourth D flip-flop, a fifth D flip-flop, a sixth D flip-flop, and a seventh D flip-flop, and includes a 74LVC1G175GW chip.

[0014] In one embodiment, the exposure output module includes a switching transistor U2 and a resistor R3. The control end of the switching transistor U2 is connected to the output end of the second accumulation module. The first end of the switching transistor U2 is connected to the first end of the resistor R3. The second end of the resistor R3 is connected to the working power supply. The first end of the switching transistor U2 is used to output an exposure signal at the rising edge of the second frequency division signal. The second end of the switching transistor U2 is grounded.

[0015] In one embodiment, the tomographic fusion control matching circuit further includes a voltage stabilizing module for supplying power to the motor encoder signal input module.

[0016] According to the second aspect, in one embodiment, a tomographic fusion system is provided, including:

[0017] A tomographic fusion control matching circuit, which adopts the tomographic fusion control matching circuit described in any of the above embodiments.

[0018] A radiator that acquires the exposure signal and emits X-rays under the exposure signal;

[0019] A detector that receives the X-rays to complete image acquisition.

[0020] A tomographic fusion control matching circuit and a tomographic fusion system according to the above embodiments. In this circuit, it includes a motor encoder signal input module, a signal conversion module, and an exposure output module. The motor encoder signal input module acquires a PWM pulse signal containing motor rotation position information. The signal conversion module uses a first accumulation module and a second accumulation module to convert the PWM pulse signal into a second frequency division signal corresponding to an appropriate exposure signal. The exposure output module outputs a corresponding exposure signal at the rising edge of the second frequency division signal. Thereby, the matching accuracy between the motion position and the exposure position is improved, the motion error in the tomographic fusion scanning process is reduced, the influence of the motion speed is reduced, and the motion artifacts are reduced, which is beneficial to improving the image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a tomographic fusion control matching circuit in an embodiment;

[0022] Figure 2 It is a circuit connection diagram of a tomographic fusion control matching circuit in an embodiment;

[0023] Figure 3 It is a schematic diagram of the output waveforms of flip - flops in a first accumulation module and a second accumulation module in an embodiment;

[0024] Figure 4 It is a schematic structural diagram of a tomographic fusion system in another embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the field.

[0026] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment, and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0027] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0028] This application provides a tomographic fusion control matching circuit and a tomographic fusion system, which reduce the reading and judgment steps in the control matching process through the tomographic fusion control matching circuit, thereby improving the matching accuracy. This application optimizes the traditional control matching method in which the motor sends the motion position information to the control chip, the control chip analyzes and judges, and then the control chip controls the radiation source and the detector to perform exposure image acquisition. Instead, it directly converts the PWM pulse signal containing the motor rotation position signal into an exposure signal for controlling the radiation emitter and the detector to perform exposure image acquisition, thereby improving the matching efficiency between the motor rotation position signal and the exposure signal. The following is a specific elaboration.

[0029] Please refer to Figure 1 , in one embodiment, a tomographic fusion control matching circuit 100 is provided, which includes a motor encoder signal input module 110, a signal conversion module 120, an exposure output module 130, and a voltage stabilization module 140.

[0030] In one embodiment, the motor encoder signal input module 110 is used to obtain a PWM pulse signal containing the motor rotation position information.

[0031] Please refer to Figure 2 , in one embodiment, the motor encoder signal input module 110 includes a motor encoder ( Figure 2 not shown in the figure) and an optocoupler. The motor encoder obtains a PWM pulse signal containing the motor rotation position according to the fixed subdivision ratio of the encoder. The optocoupler includes an anode port A, a cathode port C, a transmitter port EM, and a collector port COL. The anode port A of the optocoupler is used to obtain the conduction voltage (i.e., Figure 2 Power in the figure), the cathode C of the optocoupler is connected to the motor encoder (i.e., Figure 2 in_syn in the figure), the transmitter port EM of the optocoupler is connected to the signal conversion module 120 to output the PWM pulse signal, and the collector port COL of the optocoupler is connected to the voltage stabilization module 140 to obtain the working voltage.

[0032] It should be noted that the motor encoder uses an OC1 motor encoder. The OC1 motor encoder is a motor encoder with an open collector output. By detecting the rotation of the motor shaft, the OC1 motor encoder outputs electrical signals, which reflect the position (angle) of the motor shaft. It provides high-precision position feedback, enabling accurate understanding of the actual position of the motor shaft, and thus obtaining a more accurate PWM pulse signal for the motor rotation position information. To avoid electrical interference, an optocoupler is provided on the signal line of the motor encoder to ensure signal integrity. Among them, the optocoupler includes a TLP291 chip, and the TLP291 chip is composed of a phototransistor and a gallium arsenide optocoupled infrared emitting diode.

[0033] In one embodiment, the signal conversion module 120 performs specific conversions according to conversion requirements, converting the PWM pulse signal input by the motor encoder signal input module 110 into a second divided-frequency signal corresponding to a suitable exposure signal. The signal conversion module 120 includes a first accumulation module 121 and a second accumulation module 122. The input end of the first accumulation module 121 is connected to the motor encoder signal input module 110. The first accumulation module 121 is used to perform a first frequency division on the PWM pulse signal to generate a first divided-frequency signal. The output end of the first accumulation module 121 is connected to the input end of the second accumulation module 122. The second accumulation module 122 is used to perform a second frequency division on the first divided-frequency signal to generate a second divided-frequency signal.

[0034] In one embodiment, the first accumulation module 121 includes a first number of flip-flops. In the first accumulation module 121, the flip-flops are connected in series in sequence. Among them, the clock port of the first flip-flop in the sequential connection is used as the input end of the first accumulation module 121, and the output port of the last flip-flop in the sequential connection is used as the output end of the first accumulation module 121. Among them, the flip-flop includes a D flip-flop or a JK flip-flop.

[0035] In one embodiment, the second accumulation module 122 includes a second number of flip-flops. In the second accumulation module 122, the flip-flops are connected in series in sequence. Among them, the clock port of the first flip-flop in the sequential connection is used as the input end of the second accumulation module 122, and the output port of the last flip-flop in the sequential connection is used as the output end of the second accumulation module 122. Among them, the flip-flop includes a D flip-flop or a JK flip-flop.

[0036] Take Figure 3 as an example. Whether in the first accumulation module 121 or the second accumulation module 122, the clock port of the first flip-flop is used to obtain the PWM pulse signal. When only one flip-flop is used, the frequency division of the PWM pulse signal is like the waveform output by Q0. Connecting several flip-flops in sequence can perform a frequency division with a smaller frequency on the PWM pulse signal. Among them, in Figure 3In the middle, four flip - flops are connected in series in sequence, so that the PWM pulse signal is finally output in the waveform output by Q3, and the exposure signal is output at the rising edge of the waveform output by Q3.

[0037] It should be noted that the specific number of the first - quantity flip - flops in the first accumulation module 121 and the second - quantity flip - flops in the second accumulation module 122 can be set according to the needs in actual work.

[0038] Please refer to Figure 2 In one embodiment, the first accumulation module 121 in the present application includes four D flip - flops, namely the first D flip - flop, the second D flip - flop, the third D flip - flop and the fourth D flip - flop. Each D flip - flop includes a clock port CP, an input port D, a reset input port MR#, an output port Q, a power supply port VCC and a ground port GND. The clock port CP of the first D flip - flop serves as the input end of the first accumulation module 121. The input port D of the first D flip - flop is connected to the reset input port MR# of the first D flip - flop. The reset input port MR# of the first D flip - flop is also connected to the clock port CP of the second D flip - flop. The input port D of the second D flip - flop is connected to the reset input port MR# of the second D flip - flop. The reset input port MR# of the second D flip - flop is also connected to the clock port CP of the third D flip - flop. The input port D of the third D flip - flop is connected to the reset input port MR# of the third D flip - flop. The reset input port MR# of the third D flip - flop is also connected to the clock port CP of the fourth D flip - flop. The input port D of the fourth D flip - flop is connected to the reset input port MR# of the fourth D flip - flop. The output port Q of the fourth D flip - flop serves as the output end of the first accumulation module 121. The output ports Q of the first D flip - flop, the second D flip - flop and the third D flip - flop are not connected. The power supply ports VCC and the ground ports GND of the first D flip - flop, the second D flip - flop, the third D flip - flop and the fourth D flip - flop are respectively connected to the working power supply and the ground.

[0039] Please refer to Figure 2, In one embodiment, the second accumulation module 122 in the present application includes three D flip-flops, namely the fifth D flip-flop, the sixth D flip-flop, and the seventh D flip-flop. Each D flip-flop includes a clock port CP, an input port D, a reset input port MR#, an output port Q, a power supply port VCC, and a ground port GND. The clock port CP of the fifth D flip-flop serves as the input end of the second accumulation module 122. The input port D of the fifth D flip-flop is connected to the reset input port MR# of the fifth D flip-flop. The reset input port MR# of the fifth D flip-flop is also connected to the clock port CP of the sixth D flip-flop. The input port D of the sixth D flip-flop is connected to the reset input port MR# of the sixth D flip-flop. The reset input port MR# of the sixth D flip-flop is also connected to the clock port CP of the seventh D flip-flop. The input port D of the seventh D flip-flop is connected to the reset input port MR# of the seventh D flip-flop. The output port Q of the seventh D flip-flop serves as the output end of the second accumulation module 122. The output ports Q of the fifth D flip-flop and the sixth D flip-flop are not connected. The power supply ports VCC and the ground ports GND of the fifth D flip-flop, the sixth D flip-flop, and the seventh D flip-flop are respectively connected to the working power supply and the ground.

[0040] , In one embodiment, the first accumulation module includes the first D flip-flop, the second D flip-flop, the third D flip-flop, the fourth D flip-flop, the fifth D flip-flop, the sixth D flip-flop, and the seventh D flip-flop, and includes a 74LVC1G175GW chip. The 74LVC1G175GW chip is a low-power, low-voltage, rising-edge-triggered D flip-flop, having a separate clock port CP, an input port D, a reset input port MR#, and an output port Q. The reset input port MR# is an asynchronous low-level effective input, operating independently of the clock port CP. The information input at the input port D is transmitted to the output port Q to output a pulse during the low-level to high-level transition.

[0041] , In one embodiment, the exposure output module 130 is connected to the output end of the second accumulation module 122 to output an exposure signal at the rising edge of the second divided-frequency signal.

[0042] Please refer to Figure 2 , the exposure output module 130 includes a switching transistor U2 and a resistor R3. The control end of the switching transistor U2 is connected to the output end of the second accumulation module. The first end of the switching transistor U2 is connected to the first end of the resistor R3. The second end of the resistor R3 is connected to the working power supply. The first end of the switching transistor U2 is used to conduct at the rising edge of the second divided-frequency signal, thereby outputting an exposure signal. The second end of the switching transistor U2 is grounded.

[0043] Please refer to Figure 2, In one embodiment, the voltage stabilization module 140 is used to supply power to the motor encoder signal input module 110. The input terminal VIN of the voltage stabilization module 140 is used to connect to a 5V power supply. The voltage stabilization module 140 steps down the power supply to obtain the working voltage VCC, and connects the collector port COL of the motor encoder signal input module 110 through the output terminal VOUT of the voltage stabilization module 140. The ground terminal GND of the voltage stabilization module 140 is grounded.

[0044] Please refer to Figure 4 , In another embodiment, a tomographic fusion system is provided, including a tomographic fusion control matching circuit 100, a radiator 200, and a detector 300.

[0045] In one embodiment, the tomographic fusion control matching circuit 100 adopts the tomographic fusion control matching circuit 100 in any of the above embodiments. Since the tomographic fusion control matching circuit 100 has been clearly described in the above embodiments, it will not be elaborated here.

[0046] In one embodiment, the radiator 200 obtains an exposure signal and emits X-rays under the exposure signal, and the detector 300 receives the X-rays to complete image acquisition.

[0047] In the tomographic fusion control matching circuit and the tomographic fusion system provided by this application, when the motor controls the radiator 200 to rotate 360°, the motor encoder outputs 7200 square waves. According to the corresponding relationship that 20 square waves correspond to 1°, an exposure image needs to be acquired at each 1° position. That is, 20 PWM pulse signals of the motor encoder are converted into 1 exposure signal. As described above, the signal of the motor encoder is converted into an exposure signal in combination with the movement position information. The signal conversion module 120 uses an asynchronous accumulator composed of multiple D flip-flops to achieve the conversion of PWM pulse signals at a ratio of 20:1.

[0048] This application cancels the steps of the control software reading the motor position and the software loop judging the matching position, and realizes the conversion from PWM pulse signals to exposure signals through the hardware method of the signal conversion module 120, thereby improving the matching accuracy between the movement position and the exposure position, reducing the movement error in the tomographic fusion scanning process, reducing the influence of the movement speed, and reducing movement artifacts, which is beneficial to improving the image quality. Moreover, during the tomographic fusion scanning process, the left and right movement motor of the radiation source, the rotation motor of the radiation source, and the left and right movement motor of the detector move synchronously. The position signals of the above three motors can all be accurately matched through the above scheme.

[0049] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A tomographic fusion control matching circuit, characterized in that Including: A motor encoder signal input module, configured to obtain a PWM pulse signal containing motor rotation position information; A signal conversion module, the signal conversion module includes a first accumulation module and a second accumulation module; the input end of the first accumulation module is connected to the motor encoder signal input module, and the first accumulation module is configured to perform a first frequency division on the PWM pulse signal to generate a first divided frequency signal; the output end of the first accumulation module is connected to the input end of the second accumulation module, and the second accumulation module is configured to perform a second frequency division on the first divided frequency signal to generate a second divided frequency signal; An exposure output module, the exposure output module is connected to the output end of the second accumulation module to output an exposure signal at the rising edge of the second divided frequency signal.

2. The tomographic fusion control matching circuit according to claim 1, wherein, The motor encoder signal input module includes a motor encoder and an optocoupler; the motor encoder is configured to obtain a PWM pulse signal containing the motor rotation position; the optocoupler includes an anode port, a cathode port, a transmitter port, and a collector port. The anode port of the optocoupler is configured to obtain a conduction voltage. The cathode of the optocoupler is connected to the motor encoder. The transmitter port of the optocoupler is connected to the signal conversion module to output the PWM pulse signal. The collector port of the optocoupler is configured to obtain a working voltage.

3. The tomographic fusion control matching circuit according to claim 2, characterized in that, The first accumulation module includes a first number of flip-flops, and the second accumulation module includes a second number of flip-flops; in the first accumulation module, the flip-flops are connected in series in sequence. Among them, the clock port of the first flip-flop in the series connection sequence is used as the input end of the first accumulation module, and the output port of the last flip-flop in the series connection sequence is used as the output end of the first accumulation module; in the second accumulation module, the flip-flops are connected in series in sequence. Among them, the clock port of the first flip-flop in the series connection sequence is used as the input end of the second accumulation module, and the output port of the last flip-flop in the series connection sequence is used as the output end of the second accumulation module.

4. The tomographic fusion control matching circuit according to claim 3, wherein The flip-flop includes a D flip-flop or a JK flip-flop.

5. The tomographic fusion control matching circuit according to claim 4, wherein The first accumulation module includes a first D flip-flop, a second D flip-flop, a third D flip-flop, and a fourth D flip-flop. Each D flip-flop includes a clock port, an input port, a reset input port, and an output port. The clock port of the first D flip-flop serves as the input end of the first accumulation module. The input port of the first D flip-flop is connected to the reset input port of the first D flip-flop. The reset input port of the first D flip-flop is further connected to the clock port of the second D flip-flop. The input port of the second D flip-flop is connected to the reset input port of the second D flip-flop. The reset input port of the second D flip-flop is further connected to the clock port of the third D flip-flop. The input port of the third D flip-flop is connected to the reset input port of the third D flip-flop. The reset input port of the third D flip-flop is further connected to the clock port of the fourth D flip-flop. The input port of the fourth D flip-flop is connected to the reset input port of the fourth D flip-flop. The output port of the fourth D flip-flop serves as the output end of the first accumulation module.

6. The tomographic fusion control matching circuit according to claim 5, characterized in that, The second accumulation module includes a fifth D flip-flop, a sixth D flip-flop, and a seventh D flip-flop. Each D flip-flop includes a clock port, an input port, a reset input port, and an output port. The clock port of the fifth D flip-flop serves as the input end of the second accumulation module. The input port of the fifth D flip-flop is connected to the reset input port of the fifth D flip-flop. The reset input port of the fifth D flip-flop is further connected to the clock port of the sixth D flip-flop. The input port of the sixth D flip-flop is connected to the reset input port of the sixth D flip-flop. The reset input port of the sixth D flip-flop is further connected to the clock port of the seventh D flip-flop. The input port of the seventh D flip-flop is connected to the reset input port of the seventh D flip-flop. The output port of the seventh D flip-flop serves as the output end of the second accumulation module.

7. The tomographic fusion control matching circuit according to claim 6, characterized in that, The first accumulation module includes a first D flip-flop, a second D flip-flop, a third D flip-flop, a fourth D flip-flop, a fifth D flip-flop, a sixth D flip-flop, and a seventh D flip-flop, including a 74LVC1G175GW chip.

8. The tomographic fusion control matching circuit according to claim 7, wherein The exposure output module includes a switching transistor U2 and a resistor R3. The control end of the switching transistor U2 is connected to the output end of the second accumulation module. The first end of the switching transistor U2 is connected to the first end of the resistor R3. The second end of the resistor R3 is connected to the working power supply. The first end of the switching transistor U2 is used to output an exposure signal at the rising edge of the second divided-frequency signal. The second end of the switching transistor U2 is grounded.

9. The tomographic fusion control matching circuit according to claim 1, characterized in that, The tomographic fusion control matching circuit further includes a voltage stabilization module for supplying power to the motor encoder signal input module.

10. A tomographic fusion system, characterized in that, Including: A tomographic fusion control matching circuit, which adopts the tomographic fusion control matching circuit as described in any one of claims 1-9; A radiator that obtains the exposure signal and emits X-rays under the exposure signal; A detector that receives the X-rays to complete image acquisition.

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