CN111966150A - Medical heating pad control system and control method - Google Patents
Medical heating pad control system and control method Download PDFInfo
- Publication number
- CN111966150A CN111966150A CN202010849731.9A CN202010849731A CN111966150A CN 111966150 A CN111966150 A CN 111966150A CN 202010849731 A CN202010849731 A CN 202010849731A CN 111966150 A CN111966150 A CN 111966150A
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- Prior art keywords
- pad
- temperature sensor
- temperature
- warming pad
- heating pad
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
Abstract
The invention relates to a medical heating pad control system which comprises a body temperature sensor, a heating pad temperature sensor, a fine tuning controller, input and output equipment, alarm equipment and a battery, wherein the body temperature sensor, the heating pad temperature sensor, the input and output equipment, the alarm equipment and the battery are all in communication connection with the fine tuning controller, and the fine tuning controller is electrically connected with a detected heating pad. The temperature control device controls the temperature of the heating pad by connecting the fine tuning controller with each part, and the temperature control precision of the heating pad is more accurate by the fine tuning controller. If any abnormal condition is detected, the alarm device sends a signal to the fine adjustment controller while giving an alarm, so that the use safety is improved, and the battery is used as a power supply to be conveniently used in occasions without power supply, such as transportation, first aid and the like.
Description
Technical Field
The invention relates to medical equipment and a control method, in particular to a medical heating pad control system and a control method.
Background
The other similar products in the market at present adopt the technology of a few years ago, and have low temperature control precision and single use scene (only can be used in an operating room and a ward). The invention well solves the problems: the temperature control precision of the equipment can reach +/-0.5 ℃ by controlling software and increasing the number of temperature sensors in the heating pad. By adding the battery warming module function, the device can be used during transport and first aid.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a medical warming pad control system and a control method.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a medical pad control system that heats, includes body temperature sensor, heats pad temperature sensor, fine setting controller, input output device, alarm device, battery, body temperature sensor, heat pad temperature sensor, input output device, alarm device, battery all with fine setting controller communication connection, fine setting controller is connected with the pad electricity that heats that is detected.
The temperature of pad is heated in above-mentioned design through fine setting controller and each part connection control, makes the temperature control precision of pad of heating more accurate through fine setting controller. If any abnormal condition is detected, the alarm device sends a signal to the fine adjustment controller while giving an alarm, so that the use safety is improved, and the battery is used as a power supply to be conveniently used in occasions without power supply, such as transportation, first aid and the like.
As a further improvement of the design, the fine tuning controller comprises a temperature control module, and the temperature control module is a PWM control circuit comprising an MOS tube.
A control method of a medical warming pad comprises the following steps:
s1: setting a target temperature and a heating time length by a user through input and output equipment;
s2: clicking a heating switch on the input and output equipment;
s3: the fine tuning controller reads signals detected by the body temperature sensor and the warming pad temperature sensor and acquired by the analog-to-digital converter, and controls whether the warming pad works or not by combining the parameters preset in the step S1 and the signals acquired by the analog-to-digital converter by using a PID algorithm and a PWM technology;
and S4, after the heating pad controlled by the step S3 is heated, when the temperature detected by the heating pad temperature sensor acquired by the analog-to-digital converter exceeds the set highest temperature, the fine-tuning controller controls the alarm device to alarm. When the temperature of a certain point is detected to reach the set temperature, the controller stops heating, and the phenomenon that the local temperature is too high to cause scalding of a patient is avoided.
The specific combination technology of the PID algorithm and the PWM technique in step S3 is that the MOS transistor on/off control signal is a PWM signal, when the set temperature of the warming pad and the temperature sensor of the warming pad detect that the difference between the surface temperature of the warming pad is large, the duty ratio of the PWM signal is large, the MOS transistor on/off time is long, that is, the heating time of the warming pad is long, and as the temperature difference is continuously reduced, the duty ratio of the PWM signal is gradually reduced, the heating time is shortened, and the temperature of the warming pad is prevented from rising too fast, and the value of the duty ratio of the PWM signal is calculated by the PID algorithm according to the surface temperature of the warming pad detected by the temperature sensor of. Accurate temperature control can be realized, and the temperature fluctuation is small after the set temperature is reached.
Step S1 is preceded by a system calibration step, which uses the multi-point measurement values and the standard values as parameters to calculate calibration coefficients, i.e., to correct the measurement results to within an error range. Because the body temperature sensor and the warming pad temperature sensor both adopt thermistors, the thermistors have large influence on the measurement result, even the thermistors in the same batch have individual difference, and the system has measurement error without calibration.
The invention has the beneficial effects that: the temperature control device controls the temperature of the heating pad by connecting the fine tuning controller with each part, and the temperature control precision of the heating pad is more accurate by the fine tuning controller. If any abnormal condition is detected, the alarm device sends a signal to the fine adjustment controller while giving an alarm, so that the use safety is improved, and the battery is used as a power supply to be conveniently used in occasions without power supply, such as transportation, first aid and the like.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure, 1, a fine adjustment controller, 2, an alarm device, 3, an input and output device, 4, a battery, 5, a body temperature sensor and 6, a warming pad temperature sensor.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Example (b): the utility model provides a medical pad control system that heats, includes body temperature sensor 5, heats pad temperature sensor 6, fine setting controller 1, input/output device 3, alarm device 2, body temperature sensor 5, heat pad temperature sensor 6, input/output device 3, alarm device 2 all with fine setting controller 1 communication connection, fine setting controller 1 is connected with the pad electricity that heats that is detected.
The temperature of the heating pad is controlled by connecting the fine tuning controller 1 with each part, and the temperature control precision of the heating pad is more accurate by the fine tuning controller 1. If any abnormal situation is detected, the alarm device 2 sends a signal to the fine adjustment controller at the same time of alarming, so that the use safety is improved, and the battery 4 is adopted as a power supply to be conveniently used in occasions without power supply, such as transportation, first aid and the like.
As a further improvement of the present design, the trimming controller 1 includes a temperature control module, and the temperature control module is a PWM control circuit including a MOS transistor.
A control method of a medical warming pad comprises the following steps:
s1: setting a target temperature and a heating time length by a user through the input and output device 3;
s2: clicking a heating switch on the input and output device 3;
s3: the fine tuning controller 1 reads signals detected by the body temperature sensor 5 and the warming pad temperature sensor 6 acquired by the analog-to-digital converter, and controls whether the warming pad works or not by combining the parameters preset in the step S1 and the sensor signals acquired by the analog-to-digital converter by using a method of combining a PID algorithm and a PWM technology;
and S4, after the heating pad controlled in the step S3 is heated, when the temperature detected by the heating pad temperature sensor 6 acquired by the analog-to-digital converter exceeds the set highest temperature, the fine tuning controller 1 controls the alarm device 2 to give an alarm. When the temperature of a certain point is detected to reach the set temperature, the controller stops heating, and the phenomenon that the local temperature is too high to cause scalding of a patient is avoided.
The specific combination technology of the PID algorithm and the PWM technique in step S3 is that the MOS transistor on/off control signal is a PWM signal, when the set heating pad temperature and the heating pad temperature sensor 6 detect that the difference between the values of the heating pad surface temperature is large, the duty ratio of the PWM signal is large, the MOS transistor on/off time is long, that is, the heating time of the heating pad is long, and as the temperature difference is continuously reduced, the duty ratio of the PWM signal is gradually reduced, the heating time is shortened, and the temperature of the heating pad is prevented from rising too fast, and the value of the duty ratio of the PWM signal is calculated by the PID algorithm according to the heating pad surface temperature detected by the heating pad temperature sensor 6 and the set temperature. Accurate temperature control can be realized, and the temperature fluctuation is small after the set temperature is reached.
Step S1 is preceded by a system calibration step, which uses the multi-point measurement values and the standard values as parameters to calculate calibration coefficients, i.e., to correct the measurement results to within an error range. Since the body temperature sensor 5 and the warming pad temperature sensor 6 both use thermistors, the thermistors have a large influence on the measurement result, and even though the thermistors in the same batch have individual differences, the system may have measurement errors without calibration.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides a medical pad control system that heats, includes body temperature sensor, heats pad temperature sensor, fine setting controller, input output device, alarm device, battery, body temperature sensor, heat pad temperature sensor, input output device, alarm device, battery all with microcontroller communication connection, microcontroller and the pad electricity that heats that is detected are connected.
2. The medical warming pad control system of claim 1 wherein the microcontroller comprises a temperature control module, the temperature control module being a PWM control circuit comprising MOS transistors.
3. The method for controlling a medical warming pad according to claim 1, comprising the steps of:
s1: setting a target temperature and a set heating time length by a user through input and output equipment;
s2: clicking a heating switch on the input and output equipment;
s3: the fine tuning controller reads signals detected by the body temperature sensor and the warming pad temperature sensor and acquired by the analog-to-digital converter, and controls whether the warming pad works or not by combining the parameters preset in the step S1 and the signals acquired by the analog-to-digital converter by using a PID algorithm and a PWM technology;
and S4, after the heating pad controlled by the step S3 is heated, when the temperature detected by the heating pad temperature sensor acquired by the analog-to-digital converter exceeds the set highest temperature, the fine-tuning controller controls the alarm device to alarm.
4. The method as claimed in claim 3, wherein the specific combination of the PID algorithm and the PWM technique in step S3 is that the MOS transistor ON/OFF control signal is a PWM signal, when the difference between the set warming pad temperature and the warming pad temperature sensor detects a large value of the warming pad surface temperature, the PWM signal duty ratio is large, the MOS transistor ON/OFF time is long, that is, the warming pad heating time is long, and when the difference gradually decreases to a certain range, the PWM signal duty ratio is decreased to shorten the heating time and prevent the warming pad temperature from increasing too fast, and the value of the PWM signal duty ratio is calculated by the PID algorithm according to the warming pad temperature sensor detecting the warming pad surface temperature and the set temperature value.
5. The method as claimed in claim 3, wherein step S1 is preceded by a system calibration step, wherein the system calibration step uses multi-point measurement values and standard values as parameters to calculate calibration coefficients, i.e. to correct the measurement results within an error range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010849731.9A CN111966150A (en) | 2020-08-21 | 2020-08-21 | Medical heating pad control system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010849731.9A CN111966150A (en) | 2020-08-21 | 2020-08-21 | Medical heating pad control system and control method |
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| CN111966150A true CN111966150A (en) | 2020-11-20 |
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| CN202010849731.9A Pending CN111966150A (en) | 2020-08-21 | 2020-08-21 | Medical heating pad control system and control method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205158171U (en) * | 2015-12-02 | 2016-04-13 | 平湖邑飞光电科技有限公司 | Fomentation device |
| CN110058619A (en) * | 2019-03-15 | 2019-07-26 | 杭州坦帕医疗科技有限公司 | Inflatable heat riser, inflatable heating blanket machine and inflatable heating blanket machine system |
| CN110837264A (en) * | 2019-11-12 | 2020-02-25 | 北京英泰诺医疗科技有限公司 | First-aid medical electric heating pad multi-region temperature control system |
| CN110974522A (en) * | 2019-12-02 | 2020-04-10 | 北京英泰诺医疗科技有限公司 | Body temperature management system for patients in operation |
-
2020
- 2020-08-21 CN CN202010849731.9A patent/CN111966150A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205158171U (en) * | 2015-12-02 | 2016-04-13 | 平湖邑飞光电科技有限公司 | Fomentation device |
| CN110058619A (en) * | 2019-03-15 | 2019-07-26 | 杭州坦帕医疗科技有限公司 | Inflatable heat riser, inflatable heating blanket machine and inflatable heating blanket machine system |
| CN110837264A (en) * | 2019-11-12 | 2020-02-25 | 北京英泰诺医疗科技有限公司 | First-aid medical electric heating pad multi-region temperature control system |
| CN110974522A (en) * | 2019-12-02 | 2020-04-10 | 北京英泰诺医疗科技有限公司 | Body temperature management system for patients in operation |
Non-Patent Citations (1)
| Title |
|---|
| 中国内燃机学会: "《内燃机科技——2018年世界内燃机大会学术交流论文集（下册）》", 30 November 2018 * |
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Application publication date: 20201120 |
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