Expiratory valve heating method, expiratory valve, device, system and medium

Abstract

The invention discloses an exhalation valve heating method, an exhalation valve, a device, a system and a medium. The exhalation valve heating method comprises the steps that an exhalation valve heating assembly is controlled to be heated to a set temperature; the current temperature value of the exhalation valve heating assembly is detected every preset time; judging whether the current temperature value accords with a preset heating strategy or not; and when the current temperature value meets the preset heating strategy, an output control value is calculated through a feedback function according to the current temperature value and the set temperature, and the temperature of the exhalation valve heating assembly is controlled according to the output control value. The output value is calculated according to the current temperature of the exhalation valve, and the temperature of the exhalation valve assembly is controlled according to the output value, so that the heating assembly of the exhalation valve can be stably heated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an exhalation valve heating method, an exhalation valve, a device, a system and a medium. Background Art

[0002] The switch of the exhalation valve on the ventilator can realize the patient's exhalation and inhalation. The exhaled tidal volume is an important parameter of the ventilator. It is calculated through the data collected by the sensor on the exhalation valve. The flow sensor of the exhalation valve is a gas pressure difference sensor. If the flow sensor of the exhalation valve is attached by condensed water in the patient's exhaled gas, it will affect the accuracy of the sensor, and then affect the accuracy of the exhaled tidal volume. The current technology to solve the above problem is to calculate the length of the heating wire by the required heat and the resistance of the heating wire, and then heat the exhalation valve. When the heating wire is used to wrap around the exhalation valve, it is easy to be misplaced during the movement of the ventilator, so that the heating wire cannot be stably fixed on the exhalation valve. When calculating the length of the heating wire by the required heat and the resistance of the heating wire, the length of the heating wire needs to be confirmed in each calculation, which increases the complexity of the calculation.

[0003] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an exhalation valve heating method, an exhalation valve, a device, a system and a medium, aiming to achieve stable heating of the heating component of the exhalation valve and reduce the complexity of calculation.

[0005] The technical solution of the present invention is as follows:

[0006] An exhalation valve heating method, comprising:

[0007] Control the heating component of the exhalation valve to reach the set temperature;

[0008] Detecting the current temperature value of the exhalation valve heating component at preset intervals;

[0009] Determining whether the current temperature value meets the preset heating strategy;

[0010] When the current temperature value meets the preset heating strategy, an output control value is calculated according to the current temperature value and the set temperature through a feedback function, and the temperature of the exhalation valve heating component is controlled according to the output control value.

[0011] In one embodiment, determining whether the current temperature value complies with a preset heating strategy includes:

[0012] If it is detected that the current temperature value is higher than the preset first temperature value and lower than the second temperature value, the current temperature value complies with the preset heating strategy.

[0013] In one embodiment, the determining whether the current temperature value complies with the heating strategy further includes:

[0014] If it is detected that the current temperature value is lower than the first temperature value, the current temperature value does not meet the preset heating strategy, and a heating start instruction is sent to the exhalation valve heating component;

[0015] If it is detected that the current temperature value is higher than the second temperature value, the current temperature value does not comply with the preset heating strategy, and a stop heating instruction is sent to the exhalation valve heating component.

[0016] In one embodiment, the exhalation valve heating assembly includes a first heating plate and a second heating plate, and the method further includes:

[0017] When the first heating plate fails, the second heating plate is started for heating;

[0018] When the second heating plate fails, a heating plate failure alarm is output.

[0019] In one embodiment, when the current temperature value meets the preset heating strategy, an output control value is calculated through a feedback function according to the current temperature value and the set temperature, and the temperature of the exhalation valve heating component is controlled according to the output control value, including:

[0020] updating input parameters of a feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values;

[0021] The feedback calculation regulator calculates the output control value through a feedback function based on the input parameter;

[0022] The output control value is sent to a controller to control the temperature of the exhalation valve heating assembly.

[0023] In one embodiment, the updating of the input parameters of the feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values ​​comprises:

[0024] Get several historical temperature values ​​detected in history;

[0025] Calculating a plurality of temperature differences at different time points according to the current temperature value, a plurality of historical temperature values ​​and a set temperature;

[0026] The input parameters of the feedback calculation regulator are updated according to the current temperature value, the set temperature and a plurality of temperature difference values.

[0027] An exhalation valve, wherein the valve body surface of the exhalation valve is wrapped with a heating plate, and a heating wire is wound around the heating plate. The heating of the heating plate is controlled by the exhalation valve heating method described above.

[0028] An exhalation valve heating device, the device comprising:

[0029] A heating module, used to control the heating component of the exhalation valve to reach a set temperature;

[0030] A detection module, used for detecting the current temperature value of the exhalation valve heating component at preset intervals;

[0031] A judgment module, used to judge whether the current temperature value meets the preset heating strategy;

[0032] The control module is used to calculate an output control value through a feedback function according to the current temperature value and the set temperature when the current temperature value meets the preset heating strategy, and control the temperature of the exhalation valve heating component according to the output control value.

[0033] An exhalation valve heating system, the system comprising at least one processor; and

[0034] a memory communicatively connected to the at least one processor; wherein,

[0035] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the above-mentioned exhalation valve heating method.

[0036] A non-volatile computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are executed by one or more processors, the one or more processors can execute the above-mentioned exhalation valve heating method.

[0037] Beneficial effects: The present invention discloses an exhalation valve heating method, device, system and medium. Compared with the prior art, the embodiments of the present invention calculate the output value through the current temperature of the exhalation valve, and control the temperature of the exhalation valve assembly according to the output value, so that the heating assembly of the exhalation valve can be stably heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0039] Figure 1 A flow chart of an exhalation valve heating method provided by an embodiment of the present invention;

[0040] Figure 2 A device diagram of an exhalation valve provided in an embodiment of the present invention;

[0041] Figure 3 A schematic diagram of the functional modules of an exhalation valve heating device provided in an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of the hardware structure of an exhalation valve heating system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0044] See also Figure 1 , Figure 1 This is a flow chart of an embodiment of the exhalation valve heating method provided by the present invention. Figure 1 As shown, the method comprises the following steps:

[0045] S100, controlling the heating component of the exhalation valve to heat to a set temperature;

[0046] S200, detecting the current temperature value of the exhalation valve heating component at preset intervals;

[0047] S300, determining whether the current temperature value complies with a preset heating strategy;

[0048] S400: When the current temperature value meets the preset heating strategy, an output control value is calculated according to the current temperature value and the set temperature through a feedback function, and the temperature of the exhalation valve heating component is controlled according to the output control value.

[0049] In this embodiment, the heating switch is turned on in the ventilator settings, and ventilation is started. The heating component is heated, and the exhalation valve heating component is controlled to continue to heat to the set temperature, for example, 55 degrees Celsius; after the temperature of the heating plate reaches the set temperature, the temperature of the heating component is controlled to stabilize at around the set temperature (±15 degrees Celsius), and the current temperature value of the exhalation valve heating component is detected at preset intervals to determine whether the current temperature value meets the heating strategy. When the current temperature value meets the preset heating strategy, the output control value is calculated based on the current temperature value and the set temperature through the feedback function, and then the output control value is input into the control chip, and the temperature of the exhalation valve heating component is controlled according to the output control value. Among them, the current AD value of the heating component is obtained, and the current AD value is converted into a temperature value. The formula is as follows:

[0050]

[0051] Among them: fAD0 is the current AD sampled from the heating component, n is the number of bits of the chip, if the number of bits of the chip collecting data is 16 bits, then n = 16, K1 is a coefficient related to n, K2 is a fixed constant, K3 is a fixed constant, which is 273.15, and is a fixed constant converted from Fahrenheit to Celsius, and Temp is the temperature. It effectively solves the problem that the patient's exhaled gas contains water vapor, which affects the accuracy of the sensor.

[0052] In one embodiment, the step S300 includes:

[0053] If it is detected that the current temperature value is higher than the preset first temperature value and lower than the second temperature value, the current temperature value complies with the preset heating strategy.

[0054] In this embodiment, if it is detected that the current temperature value Heat_Temp is higher than the preset first temperature value and lower than the second temperature value, it is in [Tlow~Tup]. For example, the current temperature is in the temperature range of (40℃~70℃). Then the current temperature value meets the preset heating strategy. The output control value OutPutValue is calculated using the feedback function and sent to the chip control for temperature control. Among them: Tlow is the lower limit value of the temperature used for control, and Tup is the upper limit value of the temperature used for control, which can be a certain value (such as 0,100) or a percentage, which can be set according to the controller and heater component used. OutPutValue is a signal sent to the control chip to control the degree of heating of the heating component. Make the heating component achieve temperature stability.

[0055] In one embodiment, the step S300 further includes:

[0056] If it is detected that the current temperature value is lower than the first temperature value, the current temperature value does not meet the preset heating strategy, and a heating start instruction is sent to the exhalation valve heating component;

[0057] If it is detected that the current temperature value is higher than the second temperature value, the current temperature value does not comply with the preset heating strategy, and a stop heating instruction is sent to the exhalation valve heating component.

[0058] In this embodiment, if the sensor detects that the temperature of the heating component of the exhalation valve is lower than the first temperature value preset in the controller, the current temperature value does not meet the preset heating strategy, and the controller sends a start heating instruction to the first heater to start heating; if the sensor detects that the temperature of the heating component of the exhalation valve is higher than the second temperature value preset in the controller, the current temperature value does not meet the preset heating strategy, and the controller sends a stop heating instruction to the first heater to turn off heating. The heating condition of the heating component is monitored in real time to control the heating temperature to be stable.

[0059] In one embodiment, the exhalation valve heating assembly includes a first heating plate and a second heating plate, and the method further includes:

[0060] When the first heating plate fails, the second heating plate is started for heating;

[0061] When the second heating plate fails, a heating plate failure alarm is output.

[0062] In this embodiment, the heating component includes a first heating plate and a second heating plate. The first heating plate is generally used for heating when the exhalation valve heating component is heated. When the first heating plate fails and cannot be heated, the second heating plate is used for heating; if the second heating plate also fails, an alarm output "heating plate failure" alarm is issued. That is, if the temperature of the first heating plate is abnormal, the second heating plate is used for heating instead. If the temperature of the second heating plate is also abnormal, the exhalation valve heating component stops heating and issues a heating plate abnormality alarm. The temperature abnormality includes the problem that the heating plate cannot be adjusted to increase or decrease the temperature according to the output control value. It is convenient to maintain the exhalation valve heating component in time to prevent damage due to failure.

[0063] In one embodiment, the step S400 includes:

[0064] updating input parameters of a feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values;

[0065] The feedback calculation regulator calculates the output control value through a feedback function based on the input parameter;

[0066] The output control value is sent to a controller to control the temperature of the exhalation valve heating assembly.

[0067] In this embodiment, the input parameters of the feedback calculation regulator are updated according to the current temperature value, the set temperature and several temperature differences. The feedback calculation regulator calculates the output control value through the feedback function based on the input parameters, and sends the output control value to the controller to control the temperature of the exhalation valve heating component. Feedback function calculation formula: OutPutValue = KI*err_k0+KP*DeErr_k1+KD*DeErr_K12. Among them, KI, KP and KD are fixed values ​​(empirical values), err_k0, err_k1 and err_k2 are temperature differences; DeErr_k1 and DeErr_k12 are the differences between the target differences, which increases the accuracy of the control output value to control the temperature of the heating component.

[0068] In one embodiment, the updating of the input parameters of the feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values ​​comprises:

[0069] Get several historical temperature values ​​detected in history;

[0070] Calculating a plurality of temperature differences at different time points according to the current temperature value, a plurality of historical temperature values ​​and a set temperature;

[0071] The input parameters of the feedback calculation regulator are updated according to the current temperature value, the set temperature and a plurality of temperature difference values.

[0072] In this embodiment, several historical temperature values ​​detected in history are obtained, which may be the current temperature value, the last temperature value, and the last temperature value. According to the current temperature value, several historical temperature values, and the set temperature, several temperature differences at different time points are calculated, err_k0 is the difference between the current temperature value and the set temperature, err_k1 is the temperature difference between the last temperature value and the set temperature, err_k2 is the temperature difference between the last temperature value and the set temperature, DeErr_k1 is the difference between err_k0 and err_k1, and DeErr_k12 is the difference between err_k0 and err_k1 plus the difference between err_k2 and err_k1. The input parameters of the feedback calculation regulator are updated according to the current temperature value, the set temperature, and several temperature differences. The input parameters of the feedback calculation regulator Regulator include KI, KP, KD, err_k0, err_k1, err_k2, DeErr_k1, and DeErr_k12. Update the feedback calculation regulator input parameters in real time to increase the validity of the data.

[0073] The embodiment of the present invention also provides an exhalation valve, such as Figure 2 As shown, the valve body 10 of the exhalation valve is wrapped with a heating plate 30, and a heating wire 20 is wound around the heating plate 30. The heating of the heating plate is controlled by the exhalation valve heating method described above.

[0074] In this embodiment, the outer surface of the valve body of the exhalation valve is wrapped with a heating plate, and a surrounding heating wire is wrapped in the heating plate. When the ventilator is assembled, a sticky material is used to fix the heating plate on the exhalation valve; two heating plates are installed on the exhalation valve, divided into two on the left and right. The heating plate is heated and controlled by the above-mentioned exhalation valve heating method. The heating plate of the present invention can be well fixed on the exhalation valve, and there is no need to worry about the misalignment or falling off of the heating wire during the transportation of the ventilator, and the length of the heating wire does not need to be considered when calculating the temperature of the exhalation valve assembly. The use of an intelligent heating device can intelligently control the heating temperature at the target temperature, and there is no need to worry about the appearance of condensed water due to insufficient heating, or other problems caused by excessive heating.

[0075] Another embodiment of the present invention further provides an exhalation valve heating device, such as Figure 3 As shown, the device 1 comprises:

[0076] A heating module 11 is used to control the heating component of the exhalation valve to heat to a set temperature;

[0077] A detection module 12, used for detecting the current temperature value of the exhalation valve heating component at preset intervals;

[0078] A judging module 13 is used to judge whether the current temperature value meets the preset heating strategy;

[0079] The control module 14 is used to calculate an output control value through a feedback function according to the current temperature value and the set temperature when the current temperature value meets the preset heating strategy, and control the temperature of the exhalation valve heating component according to the output control value.

[0080] The module referred to in the present invention refers to a series of computer program instruction segments that can complete specific functions, which are more suitable for the execution process of exhalation valve heating than programs. For the specific implementation of each module, please refer to the corresponding method embodiment above, which will not be repeated here.

[0081] Another embodiment of the present invention further provides an exhalation valve heating system, such as Figure 4 As shown, the system 40 includes:

[0082] One or more processors 110 and memory 120, Figure 4 A processor 110 is used as an example for description. The processor 110 and the memory 120 may be connected via a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0083] Processor 110 is used to complete various control logics of system 40, and it can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a single-chip microcomputer, an ARM (Acorn RISCMachine) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination of these components. In addition, processor 110 can also be any traditional processor, microprocessor or state machine. Processor 110 can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP and / or any other such configuration.

[0084] The memory 120 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions corresponding to the exhalation valve heating method in the embodiment of the present invention. The processor 110 executes various functional applications and data processing of the system 40 by running the non-volatile software programs, instructions and units stored in the memory 120, that is, implements the exhalation valve heating method in the above method embodiment.

[0085] The memory 120 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required by at least one function; the data storage area may store data created according to the use of the system 40, etc. In addition, the memory 120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 120 may optionally include a memory remotely arranged relative to the processor 110, and these remote memories may be connected to the system 40 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0086] One or more units are stored in the memory 120, and when executed by one or more processors 110, the exhalation valve heating method in any of the above method embodiments is executed, for example, the above described exhalation valve heating method is executed. Figure 1 The method comprises steps S100 to S400.

[0087] An embodiment of the present invention provides a non-volatile computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, for example, to execute the above-described Figure 1 The method comprises steps S100 to S400.

[0088] As an example, non-volatile storage media can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) as external cache memory. By way of illustration and not limitation, RAM can be obtained in many forms such as synchronous RAM (SRAM), dynamic RAM, (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM). The disclosed memory components or memories of the operating environment described herein are intended to include one or more of these and / or any other suitable types of memory.

[0089] It should be noted that there is not necessarily a certain order between the above-mentioned steps. A person skilled in the art can understand, based on the description of the embodiments of the present invention, that in different embodiments, the above-mentioned steps may have different execution orders, that is, they may be executed in parallel, may be executed interchangeably, and so on.

[0090] In summary, the present invention discloses an exhalation valve heating method, an exhalation valve, a device, a system and a medium. The method controls the exhalation valve heating component to heat to a set temperature; detects the current temperature value of the exhalation valve heating component at preset time intervals; determines whether the current temperature value meets the preset heating strategy; when the current temperature value meets the preset heating strategy, calculates an output control value through a feedback function according to the current temperature value and the set temperature, and controls the temperature of the exhalation valve heating component according to the output control value. The present invention calculates an output value through the current temperature of the exhalation valve, controls the temperature of the exhalation valve component according to the output value, and enables the heating component of the exhalation valve to be stably heated.

[0091] What has been described in this specification and the accompanying drawings includes examples that can provide exhalation valve heating methods, exhalation valves, devices, systems and media. Of course, it is not possible to describe every conceivable combination of elements and / or methods for the purpose of describing the various features of the present disclosure, but it can be recognized that many other combinations and permutations of the disclosed features are possible. Therefore, it is obvious that various modifications can be made to the present disclosure without departing from the scope or spirit of the present disclosure. In addition, or in the alternative, other embodiments of the present disclosure may be apparent from consideration of the present specification and the accompanying drawings and from the practice of the present disclosure as presented herein. It is intended that the examples set forth in this specification and the accompanying drawings are considered to be illustrative and not restrictive in all respects. Although specific terms are employed herein, they are used in a general and descriptive sense and are not used for limiting purposes.

Claims

1. A method for heating an exhalation valve, characterized in that: include: Control the heating component of the exhalation valve to reach the set temperature; Detecting the current temperature value of the exhalation valve heating component at preset intervals; Determining whether the current temperature value meets the preset heating strategy; When the current temperature value meets the preset heating strategy, an output control value is calculated according to the current temperature value and the set temperature through a feedback function, and the temperature of the exhalation valve heating component is controlled according to the output control value.

2. The exhalation valve heating method according to claim 1, characterized in that: The determining whether the current temperature value complies with a preset heating strategy includes: If it is detected that the current temperature value is higher than the preset first temperature value and lower than the second temperature value, the current temperature value complies with the preset heating strategy.

3. The exhalation valve heating method according to claim 2, characterized in that: The determining whether the current temperature value complies with the heating strategy also includes: If it is detected that the current temperature value is lower than the first temperature value, the current temperature value does not meet the preset heating strategy, and a heating start instruction is sent to the exhalation valve heating component; If it is detected that the current temperature value is higher than the second temperature value, the current temperature value does not comply with the preset heating strategy, and a stop heating instruction is sent to the exhalation valve heating component.

4. The exhalation valve heating method according to claim 1, characterized in that: The exhalation valve heating assembly includes a first heating plate and a second heating plate, and the method further includes: When the first heating plate fails, the second heating plate is started for heating; When the second heating plate fails, a heating plate failure alarm is output.

5. The exhalation valve heating method according to claim 1, characterized in that: When the current temperature value meets the preset heating strategy, an output control value is calculated through a feedback function according to the current temperature value and the set temperature, and the temperature of the exhalation valve heating component is controlled according to the output control value, including: updating input parameters of a feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values; The feedback calculation regulator calculates the output control value through a feedback function based on the input parameter; The output control value is sent to a controller to control the temperature of the exhalation valve heating assembly.

6. The exhalation valve heating method according to claim 5, characterized in that: The updating of the input parameters of the feedback calculation regulator according to the current temperature value, the set temperature and a plurality of temperature difference values ​​comprises: Get several historical temperature values ​​detected in history; Calculating a plurality of temperature differences at different time points according to the current temperature value, a plurality of historical temperature values ​​and a set temperature; The input parameters of the feedback calculation regulator are updated according to the current temperature value, the set temperature and a plurality of temperature difference values.

7. An exhalation valve, characterized in that: The valve body surface of the exhalation valve is wrapped with a heating plate, and a heating wire is wound around the heating plate. The heating plate is heated and controlled by the exhalation valve heating method according to any one of claims 1 to 6.

8. An exhalation valve heating device, characterized in that: The device comprises: A heating module, used to control the heating component of the exhalation valve to reach a set temperature; A detection module, used for detecting the current temperature value of the exhalation valve heating component at preset intervals; A judgment module, used to judge whether the current temperature value meets the preset heating strategy; The control module is used to calculate an output control value through a feedback function according to the current temperature value and the set temperature when the current temperature value meets the preset heating strategy, and control the temperature of the exhalation valve heating component according to the output control value.

9. An exhalation valve heating system, characterized in that: The system includes at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the exhalation valve heating method according to any one of claims 1 to 6.

10. A non-volatile computer-readable storage medium, characterized in that: The non-volatile computer-readable storage medium stores computer-executable instructions, which, when executed by one or more processors, enable the one or more processors to execute the exhalation valve heating method according to any one of claims 1 to 6.

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