Super-resolution circuit for respiratory motion signals on the chest and abdomen

Abstract

The present invention relates to a super-resolution circuit for respiratory motion signals on the surface of chest and abdomen, and belongs to the technical field of precision instruments and chest and abdomen radiotherapy. The circuit comprises a signal conversion module, a phase difference multi-output module, a resistor chain multi-phase generation module, a multi-phase sine-square wave conversion module, a multi-phase fusion logic gate module and a secondary super-resolution module. These modules are indispensable as a whole, and together realize the conversion of a respiratory motion signal of one cycle into a square wave signal of multiple cycles, that is, the super-resolution of the respiratory motion signal on the surface of chest and abdomen is realized. The further technical advantage that this result can bring is that, during multiple respiratory cycles, the change of respiratory frequency can be judged by judging the frequency change of the square wave signal. More importantly, since the period of the super-resolution square wave is much smaller than the respiratory motion period, the change of respiratory frequency can be judged in a shorter time, that is, within a time range less than one respiratory cycle.

Description

Technical Field

[0001] The invention discloses a chest and abdomen surface respiratory motion signal super-resolution circuit, which belongs to the technical field of precision instruments and chest and abdomen radiotherapy. Background Art

[0002] During radiotherapy for thoracic and abdominal tumors, breathing causes the tumor area to escape from the target area or normal tissue to enter the target area, which not only reduces the effect of radiotherapy but also easily causes complications.

[0003] In order to solve the negative impact of respiratory movement on radiotherapy, the earliest clinical methods used were breath holding and respiratory gating. The position of the tumor was controlled by intervening in the breathing. Although certain effects were achieved, the patient tolerance was poor. In order to improve the patient tolerance and not interfere with the patient's breathing, a tracking system was developed to track the position of the tumor by monitoring the tumor area. However, since this method belongs to a lag compensation method, there is always a problem of "half a beat slow". In order to improve the tracking accuracy, scholars used prediction methods. Initially, the respiratory movement was regarded as a simple repetition of a respiratory cycle. However, since the respiratory movement itself has a quasi-periodic characteristic without obvious rules, the prediction accuracy is not high, and the error will become larger and larger with the passage of time. Later, scholars formed a respiratory movement model with time as a variable through fitting according to the historical laws of respiratory movement, and then predicted future respiratory movement. This method has a good effect. Graduate students Fan Qi and Shi Ling of this research group used the Gaussian process regression method to predict respiratory movement, and gave the prediction results in the form of mean and variance, providing a new prediction method for respiratory movement.

[0004] The macroscopic characteristics of respiratory motion are determined by amplitude and frequency. Since there is a certain corresponding relationship between amplitude and frequency, it is only necessary to accurately obtain the respiratory frequency to realize the prediction of respiratory motion. However, for the prediction of respiratory frequency, at least one respiratory cycle must be collected, which brings certain difficulties to the rapid analysis of respiratory frequency. If the respiratory motion signal can be super-resolved, the respiratory frequency can be obtained in less than one respiratory motion cycle, and then the respiratory motion can be predicted and analyzed quickly. However, in this field, no technical means for super-resolving respiratory motion signals have been found. Summary of the invention

[0005] In order to achieve super-resolution of respiratory motion signals, the present invention discloses a super-resolution circuit and method for respiratory motion signals on the chest and abdomen surfaces, which can convert a respiratory motion signal of one cycle into a square wave signal of multiple cycles. The further technical advantage that can be brought about by this result is that during multiple respiratory cycles, the change in respiratory frequency can be determined by judging the frequency change of the square wave signal. More importantly, since the period of the super-resolution square wave is much smaller than the respiratory motion period, the change in respiratory frequency can be determined within a shorter time, that is, within a time range less than one respiratory cycle.

[0006] The object of the present invention is achieved in that:

[0007] A super-resolution circuit for respiratory motion signals on the chest and abdomen surface, comprising a signal conversion module, a phase difference multi-output module, a resistor chain multi-phase generation module, a multi-phase sine-square wave conversion module, a multi-phase fusion logic gate module and a secondary super-resolution module;

[0008] The input of the signal conversion module is a respiratory motion signal f(t) of one cycle, and the output is:

[0009]

[0010] Where: t0 is the time when the respiratory motion signal f(t) starts to be collected; ω is the angular frequency of the respiratory motion signal f(t); T is the period of the respiratory motion signal f(t);

[0011] The phase difference multi-output module includes an operational amplifier U1-1 and an operational amplifier U1-2, the inverting input terminal of the operational amplifier U1-1 is connected to the output terminal of the signal conversion module through a capacitor C1-1, is connected to the output terminal of the operational amplifier U1-1 through a resistor R1-1, and the non-inverting input terminal of the operational amplifier U1-1 is connected to the ground; the inverting input terminal of the operational amplifier U1-2 is connected to the output terminal of the operational amplifier U1-1 through a capacitor C1-2, is connected to the output terminal of the operational amplifier U1-2 through a resistor R1-2, and the non-inverting input terminal of the operational amplifier U1-2 is connected to the ground; the output terminal of the signal conversion module serves as the first output of the phase difference multi-output module, the output terminal of the operational amplifier U1-1 serves as the second output of the phase difference multi-output module, and the output terminal of the operational amplifier U1-2 serves as the third output of the phase difference multi-output module;

[0012] The resistor chain multi-phase generation module includes 18 resistors; the first output of the phase difference multi-output module and the second output of the phase difference multi-output module are respectively connected through the series structure of resistor R2-2 and resistor R2-6, the resistance ratio of resistor R2-2 and resistor R2-6 is 9 / 28, connected through the series structure of resistor R2-3 and resistor R2-7, the resistance ratio of resistor R2-3 and resistor R2-7 is 8 / 11, connected through the series structure of resistor R2-4 and resistor R2-8, the resistance ratio of resistor R2-4 and resistor R2-8 is 11 / 8, The second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-5 and resistor R2-9, and the resistance ratio of resistor R2-5 and resistor R2-9 is 28 / 9; the second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-11 and resistor R2-15, and the resistance ratio of resistor R2-11 and resistor R2-15 is 9 / 28, and connected through the series structure of resistor R2-12 and resistor R2-16, and the resistance ratio of resistor R2-12 and resistor R2-16 is 8 / 11, and connected through resistor R2-13 and resistor The series structure of resistor R2-17 is connected, the resistance ratio of resistor R2-13 and resistor R2-17 is 11 / 8, and the series structure of resistor R2-14 and resistor R2-18 is connected, the resistance ratio of resistor R2-14 and resistor R2-18 is 28 / 9; the first output of the phase difference multi-output module is used as the first phase output after passing through resistor R2-1, the tap between resistor R2-2 and resistor R2-6 is used as the second phase output, the tap between resistor R2-3 and resistor R2-7 is used as the third phase output, and the tap between resistor R2-4 and resistor R2-8 is used as the third phase output. as the fourth phase output, the tap between resistor R2-5 and resistor R2-9 as the fifth phase output, the second output of the phase difference multi-output module is output as the sixth phase after passing through resistor R2-10, the tap between resistor R2-11 and resistor R2-15 is output as the seventh phase, the tap between resistor R2-12 and resistor R2-16 is output as the eighth phase, the tap between resistor R2-13 and resistor R2-17 is output as the ninth phase, and the tap between resistor R2-14 and resistor R2-18 is output as the tenth phase;

[0013] The multi-phase sine-to-square wave conversion module includes 10 operational amplifiers, the inverting input terminal of the operational amplifier U2-1 is connected to the first phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-1 is connected to the ground, and the output terminal of the operational amplifier U2-1 is the first square wave output; the inverting input terminal of the operational amplifier U2-2 is connected to the second phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-2 is connected to the ground, and the output terminal of the operational amplifier U2-2 is the second square wave output; the inverting input terminal of the operational amplifier U2-3 is connected to the resistor chain The third phase output of the multi-phase generation module; the in-phase input terminal of the operational amplifier U2-3 is connected to the ground, and the output terminal of the operational amplifier U2-3 is the third square wave output; the inverting input terminal of the operational amplifier U2-4 is connected to the fourth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-4 is connected to the ground, and the output terminal of the operational amplifier U2-4 is the fourth square wave output; the inverting input terminal of the operational amplifier U2-5 is connected to the fifth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-5 is connected to the ground, and the output terminal of the operational amplifier U2-5 is the fourth square wave output. The output end is the fifth square wave output; the inverting input end of the operational amplifier U2-6 is connected to the sixth phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-6 is connected to the ground, and the output end of the operational amplifier U2-6 is the sixth square wave output; the inverting input end of the operational amplifier U2-7 is connected to the seventh phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-7 is connected to the ground, and the output end of the operational amplifier U2-7 is the seventh square wave output; the inverting input end of the operational amplifier U2-8 is connected to the eighth phase output of the resistor chain multi-phase generation module. Output; the in-phase input terminal of the operational amplifier U2-8 is connected to the ground, and the output terminal of the operational amplifier U2-8 is the eighth square wave output; the inverting input terminal of the operational amplifier U2-9 is connected to the ninth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-9 is connected to the ground, and the output terminal of the operational amplifier U2-9 is the ninth square wave output; the inverting input terminal of the operational amplifier U2-10 is connected to the tenth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-10 is connected to the ground, and the output terminal of the operational amplifier U2-10 is the tenth square wave output;

[0014] The multi-phase fusion logic gate module includes eight XOR gates. The input of XOR gate U3-1 is the third square wave output and the seventh square wave output, and the output of XOR gate U3-1 is the first XOR output; the input of XOR gate U3-2 is the second square wave output and the tenth square wave output, and the output of XOR gate U3-2 is the second XOR output; the input of XOR gate U3-3 is the first square wave output and the first XOR output, and the output of XOR gate U3-3 is the third XOR output; the input of XOR gate U3-4 is the second XOR output and the sixth square wave output, and the output of XOR gate U3-4 is the fourth XOR output; the input of XOR gate U3-5 is The fourth XOR output and the eighth XOR output, the output of the XOR gate U3-5 is the fifth XOR output; the input of the XOR gate U3-6 is the third XOR output and the seventh XOR output, the output of the XOR gate U3-6 is the sixth XOR output; the input of the XOR gate U3-7 is the fifth square wave output and the ninth square wave output, the output of the XOR gate U3-7 is the seventh XOR output; the input of the XOR gate U3-8 is the fourth square wave output and the eighth square wave output, the output of the XOR gate U3-8 is the eighth XOR output; wherein the fifth XOR output is output as a phase-shifted super-resolution square wave, and the sixth XOR output is output as a quasi-phase super-resolution square wave;

[0015] The secondary super-resolution module includes a quasi-phase super-resolution square wave deformation circuit, a phase-shifted super-resolution square wave deformation circuit, a first eight-input AND-NOR gate, a second eight-input AND-NOR gate and a final AND gate;

[0016] The input of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the first output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the second output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output minus, the third output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay, and the fourth output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay;

[0017] The input of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the first output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the second output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output negation, the third output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output negation and delay, and the fourth output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output delay;

[0018] The inputs of the first eight-input AND-NOR gate and the second eight-input AND-NOR gate are both quasi-phase super-resolution square wave output, quasi-phase super-resolution square wave output not, quasi-phase super-resolution square wave output and quasi-phase super-resolution square wave output not and delayed AND operation, quasi-phase super-resolution square wave output not and quasi-phase super-resolution square wave output delayed AND operation, staggered phase super-resolution square wave output, staggered phase super-resolution square wave output not, staggered phase super-resolution square wave output and staggered phase super-resolution square wave output not and delayed AND operation, and staggered phase super-resolution square wave output not and staggered phase super-resolution square wave output delayed AND operation, wherein the first eight-input AND-NOR gate performs operation according to the following logic:

[0019] The first output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-shifted super-resolution square wave deformation circuit

[0020] or not

[0021] The second output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit

[0022] or not

[0023] The third output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit

[0024] or not

[0025] The fourth output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit

[0026] The second eight-input AND-NOR gate operates according to the following logic:

[0027] The first output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit

[0028] or not

[0029] The second output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-out super-resolution square wave deformation circuit

[0030] or not

[0031] The third output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit

[0032] or not

[0033] The fourth output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit

[0034] Among them, & represents the AND operation;

[0035] The input of the final AND gate is the output of the first eight-input AND-NOR gate and the output of the second eight-input AND-NOR gate, and the output of the final AND gate is a chest and abdomen surface respiratory motion super-resolution signal.

[0036] The above-mentioned chest and abdomen surface respiratory motion signal super-resolution circuit, the signal conversion module is realized by a filter and an amplifier whose passband frequency includes ω.

[0037] In the above-mentioned chest and abdomen surface respiratory motion signal super-resolution circuit, in the secondary super-resolution module, the delay is achieved by a delay circuit composed of a capacitor and a resistor.

[0038] The method for super-resolution of respiratory motion signals on chest and abdomen surfaces comprises the following steps:

[0039] Step a: In the signal conversion module, a filter and an amplifier with a passband frequency including ω are used to realize the input of a periodic respiratory motion signal f(t), and the output is:

[0040]

[0041] in,

[0042] The filter selects the component with frequency ω to pass;

[0043] The amplifier adjusts the amplitude to

[0044] Step b, in the phase difference multi-output module, using two differential circuits composed of a resistor, a capacitor and an operational amplifier, respectively realize the output cosine signal of the signal conversion module to be differentiated once and twice, thereby realizing an arithmetic progression three outputs with a phase difference tolerance of π / 2;

[0045] Step c: In the resistor chain multi-phase generation module, for the convenience of analysis, the three outputs of the phase difference multi-output module are set to sinα, sin(α-π / 2) and sin(α-π) respectively;

[0046] Since the resistance ratio of resistor R2-2 to resistor R2-6 is 9 / 28, the tap voltage between resistor R2-2 and resistor R2-6 is:

[0047]

[0048] Since the resistance ratio of the resistor R2-3 to the resistor R2-7 is 8 / 11, the tap voltage between the resistor R2-3 and the resistor R2-7 is:

[0049]

[0050] Since the resistance ratio of the resistor R2-4 to the resistor R2-8 is 11 / 8, the tap voltage between the resistor R2-4 and the resistor R2-8 is:

[0051]

[0052] Since the resistance ratio of resistor R2-5 to resistor R2-9 is 28 / 9, the tap voltage between resistor R2-5 and resistor R2-9 is:

[0053]

[0054] Since the resistance ratio of resistor R2-11 to resistor R2-15 is 9 / 28, the tap voltage between resistor R2-11 and resistor R2-15 is:

[0055]

[0056] Since the resistance ratio of the resistor R2-12 to the resistor R2-16 is 8 / 11, the tap voltage between the resistor R2-12 and the resistor R2-16 is:

[0057]

[0058] Since the resistance ratio of the resistor R2-13 to the resistor R2-17 is 11 / 8, the tap voltage between the resistor R2-13 and the resistor R2-17 is:

[0059]

[0060] Since the resistance ratio of the resistor R2-14 to the resistor R2-18 is 28 / 9, the tap voltage between the resistor R2-14 and the resistor R2-18 is:

[0061]

[0062] It can be seen that the output of the resistor chain multi-phase generation module is an arithmetic sequence of ten outputs with a phase tolerance of π / 10;

[0063] Step d, in the multi-phase sine-to-square wave conversion module, each output of the resistor chain multi-phase generation module passes through a zero-crossing comparator, and the amplitude is adjusted to the saturation voltage value of the operational amplifier, and the phase is retained;

[0064] Step e, in the multi-phase fusion logic gate module, ten square wave outputs of the multi-phase sine-to-square wave conversion module and six XOR outputs of the multi-phase fusion logic gate module are utilized to perform logic operations to realize misaligned phase super-resolution square wave output and quasi-phase super-resolution square wave output; the misaligned phase super-resolution square wave output converts a respiratory motion signal of one cycle into a square wave signal of five cycles, and the phase difference is one quarter of the cycle of the misaligned phase super-resolution square wave output signal, and the quasi-phase super-resolution square wave output converts a respiratory motion signal of one cycle into a square wave signal of five cycles, and the phase difference is the zero cycle of the quasi-phase super-resolution square wave output signal;

[0065] Step f, in the secondary super-resolution module, utilizing the characteristic that the phase difference between the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal is one quarter of a cycle, adopting a NOT gate, a delay circuit and an AND gate, to realize the collection of each rising edge and falling edge of the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal, and then through two AND-OR-NON gates and a final AND gate, realize the secondary super-resolution of the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal, and finally realize the conversion of one cycle of respiratory movement signal into twenty cycles of square wave signal.

[0066] Beneficial effects:

[0067] First, in the present invention, the signal conversion module, the phase difference multi-output module, the resistor chain multi-phase generation module, the multi-phase sine-square wave conversion module, the multi-phase fusion logic gate module and the secondary super-resolution module are as a whole, and none of them can be missing. Together, they realize the conversion of a respiratory motion signal of one cycle into a square wave signal of multiple cycles, that is, the super-resolution of the respiratory motion signal on the chest and abdomen surface is realized. The further technical advantage that this result can bring is that during multiple respiratory cycles, the change of respiratory frequency can be determined by judging the frequency change of the square wave signal. More importantly, since the period of the super-resolution square wave is much smaller than the respiratory motion period, the change of respiratory frequency can be determined in a shorter time, that is, within a time range less than one respiratory cycle.

[0068] Second, in the secondary super-resolution module, since the quasi-phase super-resolution square wave deformation circuit and the mis-phase super-resolution square wave deformation circuit are designed to have completely identical circuit structures, and cooperate with the subsequent two AND-NOR gates and the final AND gate, even if the two outputs of the multi-phase fusion logic gate module are reversely connected to the two inputs of the secondary super-resolution module, it will not have any effect on the output result of the respiratory movement super-resolution signal on the chest and abdomen surface, that is, the effect of non-directional plug-in of the multi-phase fusion logic gate module and the secondary super-resolution module can be achieved, which is similar to the effect that the Type-C interface is better than a mini USB or micro USB.

[0069] Third, in the present invention, compared with the other four patents applied for by the project team on the same day, namely, "A phase-staggered super-resolution circuit for respiratory motion signals on the chest and abdomen surface", "A phase-staggered super-resolution method for respiratory motion signals on the chest and abdomen surface", "A quasi-phase super-resolution circuit for respiratory motion signals on the chest and abdomen surface", and "A quasi-phase super-resolution method for respiratory motion signals on the chest and abdomen surface", due to the design of a secondary super-resolution module and the simultaneous use of phase-staggered super-resolution square wave output and quasi-phase super-resolution square wave output, secondary super-resolution can be performed, the degree of detail is quadrupled, and the time for judging the respiratory frequency can be shortened to one-fourth of that of the other four patents. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 The present invention is a logic block diagram of a super-resolution circuit for respiratory motion signals on the surface of chest and abdomen.

[0071] Figure 2 It is a circuit diagram of a phase difference multi-output module in a super-resolution circuit for respiratory motion signals on the chest and abdomen surfaces of the present invention.

[0072] Figure 3 The present invention discloses a circuit diagram of a resistor chain multi-phase generation module in a chest and abdomen surface respiratory motion signal super-resolution circuit.

[0073] Figure 4 The invention discloses a circuit diagram of a multi-phase sine-square wave conversion module in a super-resolution circuit for respiratory motion signals on the chest and abdomen surfaces.

[0074] Figure 5 It is a circuit diagram of a multi-phase fusion logic gate module in a super-resolution circuit for respiratory motion signals on the chest and abdomen surfaces of the present invention.

[0075] Figure 6 It is a circuit diagram of a secondary super-resolution module in a super-resolution circuit for respiratory motion signals on the surface of chest and abdomen of the present invention.

[0076] Figure 7 It is a waveform diagram output by each module of the super-resolution circuit for respiratory motion signals on the chest and abdomen surface of the present invention. DETAILED DESCRIPTION

[0077] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings. Specific implementation method 1

[0079] This embodiment is an embodiment of a super-resolution circuit for respiratory motion signals on the chest and abdomen surfaces.

[0080] Super-resolution circuit for respiratory motion signals on the chest and abdomen surface. The logic block diagram is as follows: Figure 1As shown, the chest and abdomen surface respiratory motion signal super-resolution circuit includes a signal conversion module, a phase difference multi-output module, a resistor chain multi-phase generation module, a multi-phase sine square wave conversion module, a multi-phase fusion logic gate module and a secondary super-resolution module; wherein the phase difference multi-output module circuit diagram is as shown Figure 2 As shown, the circuit diagram of the resistor chain multi-phase generation module is as follows Figure 3 As shown, the circuit diagram of the multi-phase sine-to-square wave conversion module is as follows Figure 4 As shown, the circuit diagram of the multi-phase fusion logic gate module is as follows Figure 5 As shown, the circuit diagram of the secondary super-resolution module is as follows Figure 6 As shown, the output waveforms of each module of the chest and abdomen surface respiratory motion signal super-resolution circuit of the present invention are as follows Figure 7 As shown;

[0081] The input of the signal conversion module is a respiratory motion signal f(t) of one cycle, and the output is:

[0082]

[0083] Where: t0 is the time when the respiratory motion signal f(t) starts to be collected; ω is the angular frequency of the respiratory motion signal f(t); T is the period of the respiratory motion signal f(t);

[0084] The signal conversion module is implemented by a filter and an amplifier whose passband frequency includes ω;

[0085] The phase difference multi-output module includes an operational amplifier U1-1 and an operational amplifier U1-2, the inverting input terminal of the operational amplifier U1-1 is connected to the output terminal of the signal conversion module through a capacitor C1-1, is connected to the output terminal of the operational amplifier U1-1 through a resistor R1-1, and the non-inverting input terminal of the operational amplifier U1-1 is connected to the ground; the inverting input terminal of the operational amplifier U1-2 is connected to the output terminal of the operational amplifier U1-1 through a capacitor C1-2, is connected to the output terminal of the operational amplifier U1-2 through a resistor R1-2, and the non-inverting input terminal of the operational amplifier U1-2 is connected to the ground; the output terminal of the signal conversion module serves as the first output of the phase difference multi-output module, the output terminal of the operational amplifier U1-1 serves as the second output of the phase difference multi-output module, and the output terminal of the operational amplifier U1-2 serves as the third output of the phase difference multi-output module;

[0086] The resistor chain multi-phase generation module includes 18 resistors; the first output of the phase difference multi-output module and the second output of the phase difference multi-output module are respectively connected through the series structure of resistor R2-2 and resistor R2-6, the resistance ratio of resistor R2-2 and resistor R2-6 is 9 / 28, connected through the series structure of resistor R2-3 and resistor R2-7, the resistance ratio of resistor R2-3 and resistor R2-7 is 8 / 11, connected through the series structure of resistor R2-4 and resistor R2-8, the resistance ratio of resistor R2-4 and resistor R2-8 is 11 / 8, The second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-5 and resistor R2-9, and the resistance ratio of resistor R2-5 and resistor R2-9 is 28 / 9; the second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-11 and resistor R2-15, and the resistance ratio of resistor R2-11 and resistor R2-15 is 9 / 28, and connected through the series structure of resistor R2-12 and resistor R2-16, and the resistance ratio of resistor R2-12 and resistor R2-16 is 8 / 11, and connected through resistor R2-13 and resistor The series structure of resistor R2-17 is connected, the resistance ratio of resistor R2-13 and resistor R2-17 is 11 / 8, and the series structure of resistor R2-14 and resistor R2-18 is connected, the resistance ratio of resistor R2-14 and resistor R2-18 is 28 / 9; the first output of the phase difference multi-output module is used as the first phase output after passing through resistor R2-1, the tap between resistor R2-2 and resistor R2-6 is used as the second phase output, the tap between resistor R2-3 and resistor R2-7 is used as the third phase output, and the tap between resistor R2-4 and resistor R2-8 is used as the third phase output. as the fourth phase output, the tap between resistor R2-5 and resistor R2-9 as the fifth phase output, the second output of the phase difference multi-output module is output as the sixth phase after passing through resistor R2-10, the tap between resistor R2-11 and resistor R2-15 is output as the seventh phase, the tap between resistor R2-12 and resistor R2-16 is output as the eighth phase, the tap between resistor R2-13 and resistor R2-17 is output as the ninth phase, and the tap between resistor R2-14 and resistor R2-18 is output as the tenth phase;

[0087] The multi-phase sine-to-square wave conversion module includes 10 operational amplifiers, the inverting input terminal of the operational amplifier U2-1 is connected to the first phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-1 is connected to the ground, and the output terminal of the operational amplifier U2-1 is the first square wave output; the inverting input terminal of the operational amplifier U2-2 is connected to the second phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-2 is connected to the ground, and the output terminal of the operational amplifier U2-2 is the second square wave output; the inverting input terminal of the operational amplifier U2-3 is connected to the resistor chain The third phase output of the multi-phase generation module; the in-phase input terminal of the operational amplifier U2-3 is connected to the ground, and the output terminal of the operational amplifier U2-3 is the third square wave output; the inverting input terminal of the operational amplifier U2-4 is connected to the fourth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-4 is connected to the ground, and the output terminal of the operational amplifier U2-4 is the fourth square wave output; the inverting input terminal of the operational amplifier U2-5 is connected to the fifth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-5 is connected to the ground, and the output terminal of the operational amplifier U2-5 is the fourth square wave output. The output end is the fifth square wave output; the inverting input end of the operational amplifier U2-6 is connected to the sixth phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-6 is connected to the ground, and the output end of the operational amplifier U2-6 is the sixth square wave output; the inverting input end of the operational amplifier U2-7 is connected to the seventh phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-7 is connected to the ground, and the output end of the operational amplifier U2-7 is the seventh square wave output; the inverting input end of the operational amplifier U2-8 is connected to the eighth phase output of the resistor chain multi-phase generation module. Output; the in-phase input terminal of the operational amplifier U2-8 is connected to the ground, and the output terminal of the operational amplifier U2-8 is the eighth square wave output; the inverting input terminal of the operational amplifier U2-9 is connected to the ninth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-9 is connected to the ground, and the output terminal of the operational amplifier U2-9 is the ninth square wave output; the inverting input terminal of the operational amplifier U2-10 is connected to the tenth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-10 is connected to the ground, and the output terminal of the operational amplifier U2-10 is the tenth square wave output;

[0088] The multi-phase fusion logic gate module includes eight XOR gates. The input of XOR gate U3-1 is the third square wave output and the seventh square wave output, and the output of XOR gate U3-1 is the first XOR output; the input of XOR gate U3-2 is the second square wave output and the tenth square wave output, and the output of XOR gate U3-2 is the second XOR output; the input of XOR gate U3-3 is the first square wave output and the first XOR output, and the output of XOR gate U3-3 is the third XOR output; the input of XOR gate U3-4 is the second XOR output and the sixth square wave output, and the output of XOR gate U3-4 is the fourth XOR output; the input of XOR gate U3-5 is The fourth XOR output and the eighth XOR output, the output of the XOR gate U3-5 is the fifth XOR output; the input of the XOR gate U3-6 is the third XOR output and the seventh XOR output, the output of the XOR gate U3-6 is the sixth XOR output; the input of the XOR gate U3-7 is the fifth square wave output and the ninth square wave output, the output of the XOR gate U3-7 is the seventh XOR output; the input of the XOR gate U3-8 is the fourth square wave output and the eighth square wave output, the output of the XOR gate U3-8 is the eighth XOR output; wherein the fifth XOR output is output as a phase-shifted super-resolution square wave, and the sixth XOR output is output as a quasi-phase super-resolution square wave;

[0089] The secondary super-resolution module includes a quasi-phase super-resolution square wave deformation circuit, a phase-shifted super-resolution square wave deformation circuit, a first eight-input AND-NOR gate, a second eight-input AND-NOR gate and a final AND gate;

[0090] The input of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the first output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the second output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output minus, the third output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay, and the fourth output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay;

[0091] The input of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the first output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the second output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output negation, the third output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output negation and delay, and the fourth output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output delay;

[0092] The delay is achieved by a delay circuit composed of a capacitor and a resistor;

[0093] The inputs of the first eight-input AND-NOR gate and the second eight-input AND-NOR gate are both quasi-phase super-resolution square wave output, quasi-phase super-resolution square wave output not, quasi-phase super-resolution square wave output and quasi-phase super-resolution square wave output not and delayed AND operation, quasi-phase super-resolution square wave output not and quasi-phase super-resolution square wave output delayed AND operation, staggered phase super-resolution square wave output, staggered phase super-resolution square wave output not, staggered phase super-resolution square wave output and staggered phase super-resolution square wave output not and delayed AND operation, and staggered phase super-resolution square wave output not and staggered phase super-resolution square wave output delayed AND operation, wherein the first eight-input AND-NOR gate performs operation according to the following logic:

[0094] The first output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-shifted super-resolution square wave deformation circuit

[0095] or not

[0096] The second output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit

[0097] or not

[0098] The third output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit

[0099] or not

[0100] The fourth output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit

[0101] The second eight-input AND-NOR gate operates according to the following logic:

[0102] The first output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit

[0103] or not

[0104] The second output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-out super-resolution square wave deformation circuit

[0105] or not

[0106] The third output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit

[0107] or not

[0108] The fourth output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit

[0109] Among them, & represents the AND operation;

[0110] The input of the final AND gate is the output of the first eight-input AND-NOR gate and the output of the second eight-input AND-NOR gate, and the output of the final AND gate is a chest and abdomen surface respiratory motion super-resolution signal. Specific implementation method 2

[0112] This embodiment is an implementation of a method for super-resolution of respiratory motion signals on the chest and abdomen surfaces.

[0113] The method for super-resolution of respiratory motion signals on the chest and abdomen surface is characterized by comprising the following steps:

[0114] Step a: In the signal conversion module, a filter and an amplifier with a passband frequency including ω are used to realize the input of a periodic respiratory motion signal f(t), and the output is:

[0115]

[0116] in,

[0117] The filter selects the component with frequency ω to pass;

[0118] The amplifier adjusts the amplitude to

[0119] Step b, in the phase difference multi-output module, using two differential circuits composed of a resistor, a capacitor and an operational amplifier, respectively realize the output cosine signal of the signal conversion module to be differentiated once and twice, thereby realizing an arithmetic progression three outputs with a phase difference tolerance of π / 2;

[0120] Step c: In the resistor chain multi-phase generation module, for the convenience of analysis, the three outputs of the phase difference multi-output module are set to sinα, sin(α-π / 2) and sin(α-π) respectively;

[0121] Since the resistance ratio of resistor R2-2 to resistor R2-6 is 9 / 28, the tap voltage between resistor R2-2 and resistor R2-6 is:

[0122]

[0123] Since the resistance ratio of the resistor R2-3 to the resistor R2-7 is 8 / 11, the tap voltage between the resistor R2-3 and the resistor R2-7 is:

[0124]

[0125] Since the resistance ratio of the resistor R2-4 to the resistor R2-8 is 11 / 8, the tap voltage between the resistor R2-4 and the resistor R2-8 is:

[0126]

[0127] Since the resistance ratio of resistor R2-5 to resistor R2-9 is 28 / 9, the tap voltage between resistor R2-5 and resistor R2-9 is:

[0128]

[0129] Since the resistance ratio of resistor R2-11 to resistor R2-15 is 9 / 28, the tap voltage between resistor R2-11 and resistor R2-15 is:

[0130]

[0131] Since the resistance ratio of the resistor R2-12 to the resistor R2-16 is 8 / 11, the tap voltage between the resistor R2-12 and the resistor R2-16 is:

[0132]

[0133] Since the resistance ratio of the resistor R2-13 to the resistor R2-17 is 11 / 8, the tap voltage between the resistor R2-13 and the resistor R2-17 is:

[0134]

[0135] Since the resistance ratio of the resistor R2-14 to the resistor R2-18 is 28 / 9, the tap voltage between the resistor R2-14 and the resistor R2-18 is:

[0136]

[0137] It can be seen that the output of the resistor chain multi-phase generation module is an arithmetic sequence of ten outputs with a phase tolerance of π / 10;

[0138] Step d, in the multi-phase sine-to-square wave conversion module, each output of the resistor chain multi-phase generation module passes through a zero-crossing comparator, and the amplitude is adjusted to the saturation voltage value of the operational amplifier, and the phase is retained;

[0139] Step e, in the multi-phase fusion logic gate module, ten square wave outputs of the multi-phase sine-to-square wave conversion module and six XOR outputs of the multi-phase fusion logic gate module are utilized to perform logic operations to realize misaligned phase super-resolution square wave output and quasi-phase super-resolution square wave output; the misaligned phase super-resolution square wave output converts a respiratory motion signal of one cycle into a square wave signal of five cycles, and the phase difference is one quarter of the cycle of the misaligned phase super-resolution square wave output signal, and the quasi-phase super-resolution square wave output converts a respiratory motion signal of one cycle into a square wave signal of five cycles, and the phase difference is the zero cycle of the quasi-phase super-resolution square wave output signal;

[0140] Step f, in the secondary super-resolution module, utilizing the characteristic that the phase difference between the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal is one quarter of a cycle, adopting a NOT gate, a delay circuit and an AND gate, to realize the collection of each rising edge and falling edge of the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal, and then through two AND-OR-NON gates and a final AND gate, realize the secondary super-resolution of the out-of-phase super-resolution square wave output signal and the quasi-phase super-resolution square wave output signal, and finally realize the conversion of one cycle of respiratory movement signal into twenty cycles of square wave signal.

Claims

1. A super-resolution circuit for respiratory motion signals on the chest and abdomen surface, characterized in that: It includes a signal conversion module, a phase difference multi-output module, a resistor chain multi-phase generation module, a multi-phase sine-square wave conversion module, a multi-phase fusion logic gate module and a secondary super-resolution module; The input of the signal conversion module is a respiratory motion signal f(t) of one cycle, and the output is: Where: t0 is the time when the respiratory motion signal f(t) starts to be collected; ω is the angular frequency of the respiratory motion signal f(t); T is the period of the respiratory motion signal f(t); The phase difference multi-output module includes an operational amplifier U1-1 and an operational amplifier U1-2, the inverting input terminal of the operational amplifier U1-1 is connected to the output terminal of the signal conversion module through a capacitor C1-1, connected to the output terminal of the operational amplifier U1-1 through a resistor R1-1, and the non-inverting input terminal of the operational amplifier U1-1 is connected to the ground; the inverting input terminal of the operational amplifier U1-2 is connected to the output terminal of the operational amplifier U1-1 through a capacitor C1-2, connected to the output terminal of the operational amplifier U1-2 through a resistor R1-2, and the non-inverting input terminal of the operational amplifier U1-2 is connected to the ground; the output terminal of the signal conversion module serves as the first output of the phase difference multi-output module, the output terminal of the operational amplifier U1-1 serves as the second output of the phase difference multi-output module, and the output terminal of the operational amplifier U1-2 serves as the third output of the phase difference multi-output module; The resistor chain multi-phase generation module includes 18 resistors; the first output of the phase difference multi-output module and the second output of the phase difference multi-output module are respectively connected through the series structure of resistor R2-2 and resistor R2-6, the resistance ratio of resistor R2-2 and resistor R2-6 is 9 / 28, connected through the series structure of resistor R2-3 and resistor R2-7, the resistance ratio of resistor R2-3 and resistor R2-7 is 8 / 11, connected through the series structure of resistor R2-4 and resistor R2-8, the resistance ratio of resistor R2-4 and resistor R2-8 is 11 / 8, The second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-5 and resistor R2-9, and the resistance ratio of resistor R2-5 and resistor R2-9 is 28 / 9; the second output of the phase difference multi-output module and the third output of the phase difference multi-output module are connected through the series structure of resistor R2-11 and resistor R2-15, and the resistance ratio of resistor R2-11 and resistor R2-15 is 9 / 28, and connected through the series structure of resistor R2-12 and resistor R2-16, and the resistance ratio of resistor R2-12 and resistor R2-16 is 8 / 11, and connected through resistor R2-13 and resistor The series structure of resistor R2-17 is connected, the resistance ratio of resistor R2-13 and resistor R2-17 is 11 / 8, and the series structure of resistor R2-14 and resistor R2-18 is connected, the resistance ratio of resistor R2-14 and resistor R2-18 is 28 / 9; the first output of the phase difference multi-output module is used as the first phase output after passing through resistor R2-1, the tap between resistor R2-2 and resistor R2-6 is used as the second phase output, the tap between resistor R2-3 and resistor R2-7 is used as the third phase output, and the tap between resistor R2-4 and resistor R2-8 is used as the third phase output. as the fourth phase output, the tap between resistor R2-5 and resistor R2-9 as the fifth phase output, the second output of the phase difference multi-output module is output as the sixth phase after passing through resistor R2-10, the tap between resistor R2-11 and resistor R2-15 is output as the seventh phase, the tap between resistor R2-12 and resistor R2-16 is output as the eighth phase, the tap between resistor R2-13 and resistor R2-17 is output as the ninth phase, and the tap between resistor R2-14 and resistor R2-18 is output as the tenth phase; The multi-phase sine-to-square wave conversion module includes 10 operational amplifiers, the inverting input terminal of the operational amplifier U2-1 is connected to the first phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-1 is connected to the ground, and the output terminal of the operational amplifier U2-1 is the first square wave output; the inverting input terminal of the operational amplifier U2-2 is connected to the second phase output of the resistor chain multi-phase generation module; the non-inverting input terminal of the operational amplifier U2-2 is connected to the ground, and the output terminal of the operational amplifier U2-2 is the second square wave output; the inverting input terminal of the operational amplifier U2-3 is connected to the resistor chain The third phase output of the multi-phase generation module; the in-phase input terminal of the operational amplifier U2-3 is connected to the ground, and the output terminal of the operational amplifier U2-3 is the third square wave output; the inverting input terminal of the operational amplifier U2-4 is connected to the fourth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-4 is connected to the ground, and the output terminal of the operational amplifier U2-4 is the fourth square wave output; the inverting input terminal of the operational amplifier U2-5 is connected to the fifth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-5 is connected to the ground, and the output terminal of the operational amplifier U2-5 is the fourth square wave output. The output end is the fifth square wave output; the inverting input end of the operational amplifier U2-6 is connected to the sixth phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-6 is connected to the ground, and the output end of the operational amplifier U2-6 is the sixth square wave output; the inverting input end of the operational amplifier U2-7 is connected to the seventh phase output of the resistor chain multi-phase generation module; the non-inverting input end of the operational amplifier U2-7 is connected to the ground, and the output end of the operational amplifier U2-7 is the seventh square wave output; the inverting input end of the operational amplifier U2-8 is connected to the eighth phase output of the resistor chain multi-phase generation module. Output; the in-phase input terminal of the operational amplifier U2-8 is connected to the ground, and the output terminal of the operational amplifier U2-8 is the eighth square wave output; the inverting input terminal of the operational amplifier U2-9 is connected to the ninth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-9 is connected to the ground, and the output terminal of the operational amplifier U2-9 is the ninth square wave output; the inverting input terminal of the operational amplifier U2-10 is connected to the tenth phase output of the resistor chain multi-phase generation module; the in-phase input terminal of the operational amplifier U2-10 is connected to the ground, and the output terminal of the operational amplifier U2-10 is the tenth square wave output; The multi-phase fusion logic gate module includes eight XOR gates. The input of XOR gate U3-1 is the third square wave output and the seventh square wave output, and the output of XOR gate U3-1 is the first XOR output; the input of XOR gate U3-2 is the second square wave output and the tenth square wave output, and the output of XOR gate U3-2 is the second XOR output; the input of XOR gate U3-3 is the first square wave output and the first XOR output, and the output of XOR gate U3-3 is the third XOR output; the input of XOR gate U3-4 is the second XOR output and the sixth square wave output, and the output of XOR gate U3-4 is the fourth XOR output; the input of XOR gate U3-5 is The fourth XOR output and the eighth XOR output, the output of the XOR gate U3-5 is the fifth XOR output; the input of the XOR gate U3-6 is the third XOR output and the seventh XOR output, the output of the XOR gate U3-6 is the sixth XOR output; the input of the XOR gate U3-7 is the fifth square wave output and the ninth square wave output, the output of the XOR gate U3-7 is the seventh XOR output; the input of the XOR gate U3-8 is the fourth square wave output and the eighth square wave output, the output of the XOR gate U3-8 is the eighth XOR output; wherein the fifth XOR output is output as a phase-shifted super-resolution square wave, and the sixth XOR output is output as a quasi-phase super-resolution square wave; The secondary super-resolution module includes a quasi-phase super-resolution square wave deformation circuit, a phase-shifted super-resolution square wave deformation circuit, a first eight-input AND-NOR gate, a second eight-input AND-NOR gate and a final AND gate; The input of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the first output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output, the second output of the quasi-phase super-resolution square wave deformation circuit is the quasi-phase super-resolution square wave output minus, the third output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay, and the fourth output of the quasi-phase super-resolution square wave deformation circuit is the AND operation of the quasi-phase super-resolution square wave output minus and the quasi-phase super-resolution square wave output plus a delay; The input of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the first output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output, the second output of the phase-shifted super-resolution square wave deformation circuit is the phase-shifted super-resolution square wave output negation, the third output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output negation and delay, and the fourth output of the phase-shifted super-resolution square wave deformation circuit is the AND operation of the phase-shifted super-resolution square wave output negation and the phase-shifted super-resolution square wave output delay; The inputs of the first eight-input AND-NOR gate and the second eight-input AND-NOR gate are both quasi-phase super-resolution square wave output, quasi-phase super-resolution square wave output not, quasi-phase super-resolution square wave output and quasi-phase super-resolution square wave output not and delayed AND operation, quasi-phase super-resolution square wave output not and quasi-phase super-resolution square wave output delayed AND operation, staggered phase super-resolution square wave output, staggered phase super-resolution square wave output not, staggered phase super-resolution square wave output and staggered phase super-resolution square wave output not and delayed AND operation, and staggered phase super-resolution square wave output not and staggered phase super-resolution square wave output delayed AND operation, wherein the first eight-input AND-NOR gate performs operation according to the following logic: The first output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-shifted super-resolution square wave deformation circuit or not The second output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit or not The third output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit or not The fourth output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit The second eight-input AND-NOR gate operates according to the following logic: The first output of the quasi-phase super-resolution square wave deformation circuit & the fourth output of the phase-staggered super-resolution square wave deformation circuit or not The second output of the quasi-phase super-resolution square wave deformation circuit & the third output of the phase-out super-resolution square wave deformation circuit or not The third output of the quasi-phase super-resolution square wave deformation circuit & the first output of the phase-staggered super-resolution square wave deformation circuit or not The fourth output of the quasi-phase super-resolution square wave deformation circuit & the second output of the phase-staggered super-resolution square wave deformation circuit Among them, & represents the AND operation; The input of the final AND gate is the output of the first eight-input AND-NOR gate and the output of the second eight-input AND-NOR gate, and the output of the final AND gate is a chest and abdomen surface respiratory motion super-resolution signal.

2. The chest and abdomen surface respiratory motion signal super-resolution circuit according to claim 1, characterized in that: The signal conversion module is implemented by a filter and an amplifier whose passband frequency includes ω.

3. The chest and abdomen surface respiratory motion signal super-resolution circuit according to claim 1, characterized in that: In the secondary super-resolution module, the delay is achieved by a delay circuit composed of a capacitor and a resistor.

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