Infusion pump anti-interference control system and control method

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an infusion pump anti-interference control system and method. The anti-interference control system for the infusion pump comprises the main controller and the auxiliary controller, and in the process of executing on-off control, especially on-off control, of the infusion pump, the main controller can detect on-off enabling instructions and correspondingly send out control signals for controlling whether a power supply branch connected with a power source and the input end of the power source of the infusion pump is connected or not; meanwhile, the auxiliary controller synchronously detects a startup and shutdown enabling instruction and synchronously performs matched locking on a control signal which is sent by the main controller and is used for indicating whether the power supply branch is conducted or not; moreover, in the working process of the infusion pump, even if the main controller or the auxiliary controller is disturbed, the main controller can be reset by the auxiliary controller or the auxiliary controller can be reset to eliminate abnormity caused by interference, so that the anti-interference capability of the infusion pump control system is improved, and finally the overall reliability of the infusion pump is improved.

Description

Technical Field

[0001] The present invention is applicable to the technical field of medical devices, and in particular relates to an anti-interference control system and a control method for an infusion pump. Background Art

[0002] An infusion pump is an intelligent infusion device that uses mechanical driving force to accurately control the number of infusion drops or the infusion flow rate to ensure that the dose enters the patient's body accurately and safely.

[0003] Since the infusion pump has a small space, dense components, and relatively scattered circuit boards, coupled with the high requirements for electromagnetic compatibility of the infusion pump during registration, the EMS test of the infusion pump is difficult. Among them, the MCU is particularly unstable during EMS testing and subsequent use. The reason is that the MCU has many system resources, a high main frequency, and a high probability of being disturbed, especially the power supply system. Once disturbed and the MCU is reset and shut down, it will affect the normal use of the equipment, delay the patient's treatment, and cause unacceptable risks.

[0004] That is, current infusion pumps have the problems of low anti-interference capability and low reliability. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides an anti-interference control system and a control method for an infusion pump to solve the technical problem that the current infusion pump has low reliability due to low anti-interference capability.

[0006] In a first aspect, an anti-interference control system for an infusion pump is provided, comprising a main controller, a sub-controller, a power on / off enabling branch, a power on / off detection branch, a power on / off control branch, and a power supply branch;

[0007] The power supply is connected to the input end of the power on / off enable branch, the touch button is connected to the control end of the power on / off enable branch, the enable output end of the power on / off enable branch is connected to the detection input end of the power on / off detection branch, the first detection output end of the power on / off detection branch is connected to the main controller, and the second detection output end of the power on / off detection branch is connected to the sub-controller;

[0008] The control output end of the main controller is connected to the first control end of the power on / off control branch, the control output end of the sub-controller is connected to the second control end of the power on / off control branch, the second control end controls the connection to the first control end, the input end of the power on / off control branch is connected to the power supply, the output end of the power on / off control branch is connected to the control end of the power supply branch, the input end of the power supply branch is connected to the power supply, and the output end of the power supply branch is connected to the power input end of the infusion pump.

[0009] In a second aspect, an anti-interference control method for an infusion pump is provided, which is applied to the anti-interference control system for the infusion pump described in the first aspect, and the method comprises:

[0010] When the infusion pump needs to be turned on, the light touch button is pressed for a first set time. After the main controller receives a detection signal that the first detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the main controller outputs a control signal that enables the output end of the power on / off control branch to output a control signal that can turn on the power supply branch; after the sub-controller receives a detection signal that the second detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the sub-controller outputs a control signal that locks the control signal output by the control output end of the main controller;

[0011] When the infusion pump needs to be shut down, the touch button is pressed for a second set time that is greater than the first set time. After the main controller receives the detection signal that the first detection output end of the power-on / off detection branch continuously outputs the second set time, and after the sub-controller receives the detection signal that the second detection output end of the power-on / off detection branch continuously outputs the second set time, both output a control signal with a potential opposite to that of the control signal output by the infusion pump when it is turned on.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The anti-interference control system of the infusion pump of the present invention includes two controllers, a main controller and a sub-controller. When executing the on / off control of the infusion pump, especially the startup control, the main controller can detect the on / off enable instruction and correspondingly issue a control signal for the conduction of the power supply branch connecting the power supply and the power input end of the infusion pump, and at the same time, the sub-controller synchronously detects the on / off enable instruction and synchronously locks the control signal for the conduction of the power supply branch issued by the main controller; and during the operation of the infusion pump, even if the main controller or the sub-controller is disturbed, the sub-controller can reset the main controller or reset itself to eliminate the abnormality caused by the interference, thereby improving the anti-interference ability of the infusion pump control system and ultimately improving the overall reliability of the infusion pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1It is a circuit structure diagram of a dual MCU control system connected with a reset branch provided by an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the circuit structure of a power on / off enabling branch and a power supply branch provided in one embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the circuit structure of a power on / off detection branch and a power on / off control branch provided by an embodiment of the present invention;

[0018] Figure 4 It is a flow chart of an anti-interference control method for an infusion pump provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0021] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0022] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0023] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0024] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0025] An embodiment of the present invention provides an anti-interference control system for an infusion pump.

[0026] The anti-interference control system of the infusion pump includes: Figure 1 The main controller and the sub-controller shown in FIG. Figure 2 The switch enabling branch shown in the upper part, Figure 3 The power on / off detection branch, power on / off control branch and Figure 2 The power supply branch is shown in the lower part.

[0027] Wherein, the power supply is connected to the input end of the power on / off enable branch, the touch button is connected to the control end of the power on / off enable branch, the enable output end of the power on / off enable branch is connected to the detection input end of the power on / off detection branch, the first detection output end of the power on / off detection branch is connected to the main controller, and the second detection output end of the power on / off detection branch is connected to the sub-controller;

[0028] The control output end of the main controller is connected to the first control end of the power on / off control branch, the control output end of the sub-controller is connected to the second control end of the power on / off control branch, the second control end controls the connection to the first control end, the input end of the power on / off control branch is connected to the power supply, the output end of the power on / off control branch is connected to the control end of the power supply branch, the input end of the power supply branch is connected to the power supply, and the output end of the power supply branch is connected to the power input end of the infusion pump.

[0029] Among them, the touch button is a switch that remains on after being pressed and is disconnected when released or no longer pressed. After the touch button is connected to the control end of the power-on / off enable branch, the power-on / off enable branch can be controlled by pressing and releasing the touch switch, so that it outputs an enable signal to the power-on / off detection branch when it is turned on, so that the power-on / off detection branch sends a detection signal to the main controller and the sub-controller when the touch switch is turned on, so that the main controller and the sub-controller can perform different controls according to the duration of the detection signal.

[0030] Specifically, when the infusion pump needs to be turned on, the light touch button is pressed for a first set time, and after the main controller receives the detection signal that the first detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the main controller outputs a control signal that enables the output end of the power on / off control branch to output a control signal that can turn on the power supply branch; after the sub-controller receives the detection signal that the second detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the sub-controller outputs a control signal that locks the control signal output by the control output end of the main controller;

[0031] That is, when the main controller receives a detection signal transmitted to it by the power-on / off detection branch through the first detection output terminal and lasting for the first set time, the main controller will know that it is necessary to execute the power-on control of the infusion pump at this time, and it will control the power-on / off control branch through its own control output terminal to control the output signal of the power-on / off control branch. Since the output of the power-on / off control branch is connected to the control terminal of the power supply branch, that is, the output signal of the power-on / off control branch is to control whether the power supply branch is turned on or not, so in order to turn on the power supply branch and successfully power on the infusion pump, the main controller should control the output signal of the power-on / off control branch to make the signal output by the power-on / off control branch the signal or the type of potential high or low corresponding to the control terminal of the power supply branch when the power supply branch is turned on.

[0032] As for the sub-controller, after receiving the detection signal with the same duration as the first set duration through the second detection output terminal, it can also know that it is necessary to execute the power-on control of the infusion pump at this time. Since the function of the sub-controller is to improve the anti-interference ability of the main controller to the power on / off and working control of the infusion pump, its control expectation at this time should be not to change the output state of the power on / off control branch, but to strengthen the control effect of the main controller on the output state of the power on / off control branch. Therefore, the second control terminal is set in the power on / off control branch to control the connection with the first control terminal, and during the power on control of the infusion pump, the sub-controller locks the control signal output by the main controller through the first control terminal through the second control terminal, so as to avoid the main controller outputting unstable control signals due to interference, which affects the power on of the infusion pump.

[0033] When the infusion pump needs to be shut down, the touch button is pressed for a second set time longer than the first set time, and after the main controller receives the detection signal that the first detection output end of the power-on / off detection branch continuously outputs the second set time, and after the sub-controller receives the detection signal that the second detection output end of the power-on / off detection branch continuously outputs the second set time, both output a control signal with a potential opposite to that of the control signal output by the infusion pump when it is turned on.

[0034] The power-off control is also executed by the main controller and the sub-controller locks the control signal of the main controller. Since the power-on and power-off control processes are completely opposite and the power-on process has been described in detail above, the power-off process will not be described in detail here. It only needs to be emphasized that the reason why the second set time for the power-off control is set to be longer than the first set time for the power-on control is also to improve the working reliability of the infusion pump and prevent the infusion pump from being accidentally shut down and powered off when the operator ignores that the infusion pump has started working and performs the power-on operation of the infusion pump.

[0035] The anti-interference control system of the infusion pump in this embodiment can significantly improve the stability or anti-interference ability of the power-on and power-off control signals of the infusion pump through the design of the main and sub-controllers and various peripheral branches, thereby improving the reliability of the infusion pump.

[0036] In one embodiment, as shown in the attached Figure 1 As shown, the above-mentioned infusion pump anti-interference control system also includes a reset branch, the reset control end of the sub-controller is connected to the control end of the reset branch, and the output end of the reset branch is connected to the reset receiving end of the sub-controller; the pulse signal output end of the main controller is connected to the pulse signal receiving end of the sub-controller.

[0037] By means of the additional reset branch, the anti-interference capability of the infusion pump can be improved after the infusion pump is powered on, that is, during normal operation.

[0038] Specifically, after the infusion pump is turned on, the sub-controller continuously receives the pulse signal sent by the main controller. When the pulse signal changes, the reset control end of the sub-controller outputs a control signal of a third set duration that can change the output potential of the reset branch, thereby resetting the main controller.

[0039] Since the reset control is an instantaneous control process, the value of the third set time length should not be too large. In this embodiment, the third set time length is preferably 0.1 second.

[0040] The change of the pulse signal sent by the main controller to the sub-controller can indicate that when the infusion pump is working normally, the main controller is disturbed and abnormal, resulting in changes in the pulse signal. At this time, after the sub-controller recognizes the abnormality of the main controller through the change of the received pulse signal, it can control the main controller to reset and eliminate the abnormality through the reset branch, thereby improving the working reliability of the infusion pump.

[0041] In one embodiment, as in the attached Figure 1 As shown, the reset branch may specifically include a reset switch Q2, the input end of the reset switch, i.e., pin 2, is grounded, the output end of the reset branch is connected to the output end of the reset switch, i.e., pin 3, and the control end of the reset branch is connected to the control end of the reset switch, i.e., pin 1.

[0042] In addition, the control end of the reset branch is specifically connected to the reset control end of the secondary controller, namely the MCU1 RESET-MCU2 end, outside the reset branch as a whole, and the output end of the reset branch is specifically connected to the reset receiving end of the main controller, namely the MCU2 RST end, outside the reset branch as a whole.

[0043] In one embodiment, if Figure 2 As shown in the upper part of , the power-on / off enable branch includes an enable switch Q5, the input end of the enable switch, i.e., pin 2, is connected to the input end of the power-on / off enable branch, the output end of the enable switch, i.e., pin 3, is connected to the enable output end of the power-on / off enable branch, i.e., DVCC-BAT-12V-MIX end, and the control end of the enable switch, i.e., pin 1, is connected to the control end of the power-on / off enable branch.

[0044] Thus, the enable switch Q5 can be turned on for the first set time or the second set time by pressing the touch switch S1 for different lengths of time. In this embodiment, the first set time is preferably 3 seconds and the second set time is preferably 5 seconds. Therefore, when the enable switch Q5 is turned on, the power supply connected to the input end of the power switch enable branch can output enable signals with different durations at the enable output end of the power switch enable branch, i.e., the DVCC-BAT-12V-MIX end, after Q5.

[0045] In one embodiment, if Figure 3 As shown in the lower part, the power on / off detection branch includes a detection switch Q4, the power supply is connected to the input end of the detection switch Q4, that is, pin 3, the first detection output end of the power on / off detection branch, that is, the MCU1ONOFF-CHECK end, and the second detection output end of the power on / off detection branch, that is, the MCU2ONOFF-CHECK end, the output end of the detection switch Q4, that is, pin 2, is grounded, and the detection input end of the power on / off detection branch is connected to the control end of the detection switch Q4, that is, pin 1.

[0046] Although Figure 3 As shown in the lower part, the power supply input to the input end of the power on / off detection branch is a 3.3V power supply, but the power supply described in this embodiment is the same as the power supply described in the above embodiments, but it can also be Figure 3 The 3.3V power supply is shown in the lower part.

[0047] In one embodiment, if Figure 3 As shown in the upper part, the on / off control branch includes a first control switch Q1 and a second control switch Q3;

[0048] The power supply is connected to the input end of the first control switch Q1, i.e., pin 3, and the input end of the second control switch Q3, i.e., pin 3; the output ends of the first control switch Q1 and the second control switch Q3, i.e., pin 2, are both grounded; the input end of the second control switch Q3, i.e., pin 3, is connected to the control end of the first control switch Q1, i.e., pin 1; the first control end of the power on / off control branch, i.e., the MCU1 ONOFF-CTL end, is connected to the control end of the first control switch Q1, i.e., pin 1; the second control end of the power on / off control branch, i.e., the MCU2 ONOFF-CTL end, is connected to the control end of the second control switch Q3, i.e., pin 1; and the input end of the first control switch Q1 is connected to the output end of the power on / off control branch, i.e., the TTL3.3V-ONOFF-OUT end.

[0049] In one embodiment, the power supply branch includes a power supply switch, the input end of the power supply branch is connected to the input end of the power supply switch, the output end of the power supply switch is connected to the output end of the power supply branch, and the control end of the power supply branch is connected to the control end of the power switch.

[0050] Specifically, since the power sources described in the above embodiments are specifically 12V power sources and batteries that supply power simultaneously, in this embodiment, the structure of the power supply branch can be further as follows: Figure 2As shown in the lower part, it includes a first power switch Q6 and a second power switch Q7. The input end of the first power switch Q6, i.e., pin 2, is connected to the first input end of the power supply branch, i.e., the DVCC-12V end. The input end of the second power switch Q7, i.e., pin 2, is connected to the second input end of the power supply branch, i.e., the DVCC-VBAT end. The output ends of the first power switch Q6 and the second power switch Q7, i.e., pin 3, are connected to the output end of the power supply branch, i.e., the DVCC-BAT-ACDC end. The control end of the first power switch Q6, i.e., pin 1, is connected to the input end of the first conduction control switch Q8, i.e., pin 3. The control end of the second power switch Q7, i.e., pin 1, is connected to the input end of the second conduction control switch Q9, i.e., pin 3. When the output end of the above-mentioned on / off control branch, i.e., the TTL3.3V-ONOFF-OUT end, is at a high level, as shown in FIG. Figure 2 As shown in the upper part, after the SYS-ONOFF-CTL terminal is set to a high level, Figure 2 The first conduction control switch Q8 and the second conduction control switch Q9 shown in the lower part are turned on, so that the first power supply switch Q6 and the second power supply switch Q7 are turned on, realizing the power supply to the infusion pump.

[0051] It is easy to understand that in other embodiments, the power supply branch may include only one power supply input terminal, and the power supply input terminal may be connected to any type of power supply.

[0052] In one embodiment, the sub-controller MCU2 also includes a watchdog circuit, and the sub-controller transmits a dog feeding signal to the dog feeding end of the watchdog circuit at a set interval. When the sub-controller interrupts the transmission of the dog feeding signal to the dog feeding end of the watchdog circuit due to interference, the watchdog circuit will immediately output a reset signal to the reset end of the sub-controller to reset the sub-controller.

[0053] In this way, it can be ensured that the sub-controller MCU2 can be reset in time after being disturbed to eliminate the abnormality caused by the interference, thereby improving its own reliability and thus improving the reliability of the infusion pump's anti-interference control system, and ultimately further improving the working reliability of the infusion pump.

[0054] It should be noted that the power sources in the above embodiments may be the same or different, and the power source may include any one or more of the above-mentioned 12V power source, 3.3V power source and battery.

[0055] Based on the infusion pump anti-interference control system given in the above embodiment, the present invention also provides an infusion pump anti-interference control method embodiment applied to the above infusion pump anti-interference control system, such as Figure 4 As shown, the method includes:

[0056] Step S201, when the infusion pump needs to be turned on, the light touch button is pressed for a first set time, and after the main controller receives a detection signal that the first detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the main controller outputs a control signal that enables the output end of the power on / off control branch to output a control signal that can turn on the power supply branch; after the sub-controller receives a detection signal that the second detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the sub-controller outputs a control signal that locks the control signal output by the control output end of the main controller;

[0057] Step S202, when the infusion pump needs to be shut down, the touch button is pressed for a second set time longer than the first set time, and after the main controller receives the detection signal that the first detection output end of the power-on / off detection branch continuously outputs the second set time, and after the sub-controller receives the detection signal that the second detection output end of the power-on / off detection branch continuously outputs the second set time, both output a control signal with a potential opposite to that of the control signal output by the infusion pump when it is turned on.

[0058] Since the infusion pump anti-interference control method based on the infusion pump anti-interference control system given in the above embodiment has been described in detail in the infusion pump anti-interference control system embodiment given in the above embodiment, and further the reset operation of the main controller MCU1 and the sub-controller MCU2 has also been described in detail in the infusion pump anti-interference control system embodiment given in the above embodiment, it will not be repeated in this embodiment.

[0059] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An anti-interference control system for an infusion pump, characterized in that: It includes a main controller, a sub-controller, a power on / off enabling branch, a power on / off detection branch, a power on / off control branch and a power supply branch; The power supply is connected to the input end of the power on / off enable branch, the touch button is connected to the control end of the power on / off enable branch, the enable output end of the power on / off enable branch is connected to the detection input end of the power on / off detection branch, the first detection output end of the power on / off detection branch is connected to the main controller, and the second detection output end of the power on / off detection branch is connected to the sub-controller; The control output end of the main controller is connected to the first control end of the power on / off control branch, the control output end of the sub-controller is connected to the second control end of the power on / off control branch, the second control end controls the connection to the first control end, the input end of the power on / off control branch is connected to the power supply, the output end of the power on / off control branch is connected to the control end of the power supply branch, the input end of the power supply branch is connected to the power supply, and the output end of the power supply branch is connected to the power input end of the infusion pump.

2. The anti-interference control system for an infusion pump according to claim 1, characterized in that: It also includes a reset branch, the reset control end of the sub-controller is connected to the control end of the reset branch, and the output end of the reset branch is connected to the reset receiving end of the sub-controller; The pulse signal output end of the main controller is connected to the pulse signal receiving end of the sub-controller.

3. The anti-interference control system for an infusion pump according to claim 2, characterized in that: The reset branch comprises a reset switch, an input end of the reset switch is grounded, an output end of the reset branch is connected to the output end of the reset switch, and a control end of the reset branch is connected to the control end of the reset switch.

4. The anti-interference control system for an infusion pump according to claim 1, characterized in that: The power-on / off enable branch includes an enable switch, an input end of the enable switch is connected to an input end of the power-on / off enable branch, an output end of the enable switch is connected to an enable output end of the power-on / off enable branch, and a control end of the enable switch is connected to a control end of the power-on / off enable branch.

5. The anti-interference control system for an infusion pump according to claim 1, characterized in that: The power-on / off detection branch includes a detection switch, the power supply is connected to the input end of the detection switch, the first detection output end of the power-on / off detection branch and the second detection output end of the power-on / off detection branch, the output end of the detection switch is grounded, and the detection input end of the power-on / off detection branch is connected to the control end of the detection switch.

6. The anti-interference control system for an infusion pump according to claim 1, characterized in that: The on / off control branch includes a first control switch and a second control switch; The power supply is connected to the input end of the first control switch and the input end of the second control switch, the output ends of the first control switch and the second control switch are both grounded, the input end of the second control switch is connected to the control end of the first control switch, the first control end of the power on / off control branch is connected to the control end of the first control switch, the second control end of the power on / off control branch is connected to the control end of the second control switch, and the input end of the first control switch is connected to the output end of the power on / off control branch.

7. The anti-interference control system for an infusion pump according to claim 1, characterized in that: The power supply branch includes a power supply switch, an input end of the power supply branch is connected to an input end of the power supply switch, an output end of the power supply switch is connected to an output end of the power supply branch, and a control end of the power supply branch is connected to a control end of the power supply switch.

8. An anti-interference control method for an infusion pump, characterized in that: Applied to the anti-interference control system of the infusion pump according to claim 1, the method comprises: When the infusion pump needs to be turned on, the light touch button is pressed for a first set time. After the main controller receives a detection signal that the first detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the main controller outputs a control signal that enables the output end of the power on / off control branch to output a control signal that can turn on the power supply branch; after the sub-controller receives a detection signal that the second detection output end of the power on / off detection branch continuously outputs the first set time, the control output end of the sub-controller outputs a control signal that locks the control signal output by the control output end of the main controller; When the infusion pump needs to be shut down, the touch button is pressed for a second set time that is greater than the first set time. After the main controller receives the detection signal that the first detection output end of the power-on / off detection branch continuously outputs the second set time, and after the sub-controller receives the detection signal that the second detection output end of the power-on / off detection branch continuously outputs the second set time, both output a control signal with a potential opposite to that of the control signal output by the infusion pump when it is turned on.

9. The anti-interference control method for an infusion pump according to claim 8, characterized in that: The infusion pump anti-interference control system further includes a reset branch, the reset control end of the sub-controller is connected to the control end of the reset branch, the output end of the reset branch is connected to the reset receiving end of the sub-controller; the pulse signal output end of the main controller is connected to the pulse signal receiving end of the sub-controller; After the infusion pump is turned on, the sub-controller continuously receives the pulse signal sent by the main controller. When the pulse signal changes, the reset control end of the sub-controller outputs a control signal of a third set duration that can change the output potential of the reset branch, thereby resetting the main controller.

10. The anti-interference control method for an infusion pump according to claim 8 or 9, characterized in that: The sub-controller also includes a watchdog circuit, which transmits a dog feeding signal to the dog feeding end of the watchdog circuit at a set interval. When the sub-controller is disturbed and the transmission of the dog feeding signal is interrupted, the watchdog circuit outputs a reset signal to the reset end of the sub-controller to reset the sub-controller.

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