CN100456196C - Forced protecting circuit design for controlling baby's thermal-insulating box temperature - Google Patents
Forced protecting circuit design for controlling baby's thermal-insulating box temperature Download PDFInfo
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- CN100456196C CN100456196C CNB2007100574114A CN200710057411A CN100456196C CN 100456196 C CN100456196 C CN 100456196C CN B2007100574114 A CNB2007100574114 A CN B2007100574114A CN 200710057411 A CN200710057411 A CN 200710057411A CN 100456196 C CN100456196 C CN 100456196C
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- temperature
- circuit
- temperature sensor
- data
- chip microcomputer
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Abstract
A forced-protection circuit of temperature control on baby heat preservation box is prepared as setting up databank of temperature variation rate to temperature transducer voltage variation under different temperature of baby heat preservation box, utilizing monolithic computer to obtain variation rate of collected temperature data, comparing obtained variation rate with data in databank to judge operation state of temperature transducer and starting up alarm circuit if abnormal operation state of temperature transducer is judged out. Its forced-protecting method is also disclosed.
Description
Technical field
The present invention relates to a kind of method of temperature-control circuit safety detection of infant incubator and the method for mandatory protection.
Background technology
The mentality of designing of existing infant incubator temperature-control circuit is: adopt temperature sensor collecting temperature data, in the comparison amplifying circuit that integrated operational amplifier constitutes, the temperature data of gathering is compared with default temperature data, if the temperature data of gathering is in the preset temperature data area, well heater operate as normal then, otherwise stop the work of well heater, and start warning circuit.Its existing problems are as follows:
1. if temperature sensor damages or deviation takes place, then the data of Cai Jiing can not reflect actual temperature.The danger that exists is: image data in the preset temperature data area, the well heater operate as normal, and actual conditions to be temperature surpassed the default restriction of going up, cause temperature to continue to raise, this is breakneck to ewborn infant.
2. if integrated operational amplifier breaks down or deviation occurs, its output signal is unreliable, can cause the dangerous situation described in 1 equally.
When circuit start warning circuit, well heater quits work.If medical personnel in time handle, then the baby can be dealt carefully with.If medical personnel not at the scene, will cause insulation the temperature inside the box to continue to descend, make the baby be in hazardous situation equally.
For these reasons, our development and Design the temperature controlled forced protecting circuit of infant incubator.
Summary of the invention
The objective of the invention is to solve the above shortcoming that existing infant incubator temperature-control circuit design exists.By setting up the database of the rate of temperature change-temperature sensor change in voltage of infant incubator under different temperatures.In Single Chip Microcomputer (SCM) system, the temperature data of temperature sensor collection is asked rate of change, and compare, judge the authenticity of temperature sensor image data, judge promptly whether temperature sensor is in normal operating conditions with database data; By the comparing unit of integrated transporting discharging comparator circuit and Single Chip Microcomputer (SCM) system, realize the duplicate protection that temperature is judged; By forced protecting circuit, avoid insulation can to break down and in time to handle the danger that causes.
Embodiment
1. the method for taking at problem 1: set up the database of the rate of temperature change-temperature sensor change in voltage under the infant incubator different temperatures, be stored in Single Chip Microcomputer (SCM) system.In single-chip microcomputer, the temperature data of temperature sensor collection is asked rate of change, and compare, judge with this whether temperature sensor is in normal operating conditions with database data.If judge the temperature sensor operation irregularity, then start warning circuit.
2. the method for taking at problem 2: the temperature data of temperature sensor collection is compared with temperature data is set in the comparison amplifying circuit that integrated operational amplifier constitutes, if in temperature range is set, and amplifier output high level, otherwise output low level.The temperature data of temperature sensor collection in Single Chip Microcomputer (SCM) system is simultaneously also compared with temperature data is set, in scope is set, and at P1.7 port output high level, otherwise output low level.Have only amplifier output and P1.7 end all to export high level (being that dual judgement is normal), AND gate circuit is opened, and just can make well heater work.Otherwise as long as a side judges unusual output low level, all can close AND gate circuit, stop well heater work, start warning circuit simultaneously, play the effect of duplicate protection.
3. the method for taking at problem 3: in circuit alarm, start the timekeeping system of single-chip microcomputer.If timing reaches 10 minutes without any treatment measures, then start forced protecting circuit.The feed circuit of well heater switch to monolithic processor controlled heating installation power supply circuit in forced protecting circuit.Single-chip microcomputer is judged the current date according to timing system.In the February of November to coming year in every year, the P1.6 port output low level of single-chip microcomputer, start-up period is 1 minute, dutycycle is that 1.5: 1 pulse producer is a heating installation power supply; On all the other dates, the P1.5 port output low level of single-chip microcomputer, start-up period is that 1 minute square-wave generator is a heating installation power supply.The temperature in the insulation can is kept in so well heater interrupter duty, and the back of avoiding reporting to the police cuts off lasting reduction of temperature that the heating installation power supply power supply causes, protection baby's health.
Claims (3)
1. the method for the temperature-control circuit safety detection of an infant incubator and the method for mandatory protection, it is characterized in that setting up the database of the rate of temperature change-temperature sensor change in voltage of infant incubator under different temperatures, in Single Chip Microcomputer (SCM) system, the temperature data of temperature sensor collection is asked rate of change, and compare with database data, judge with this whether temperature sensor is in normal operating conditions; By the comparing unit of integrated transporting discharging comparator circuit and Single Chip Microcomputer (SCM) system, realize the duplicate protection that temperature is judged; When taking place, fault starts warning circuit; and forced protecting circuit switches to monolithic processor controlled heating installation power supply circuit with the heating installation power supply circuit; monolithic processor controlled heating installation power supply circuit is a pulse power supply, and insulation the temperature inside the box that the work of cut-out well heater causes after avoiding reporting to the police continues to reduce the danger that causes.
2. method according to claim 1, it is characterized in that adopting Single Chip Microcomputer (SCM) system that the change in voltage of the temperature sensor of collection is compared with database data, judge whether temperature sensor is in normal operating conditions, if the temperature sensor operation irregularity starts warning circuit immediately.
3. method according to claim 1, the temperature data that it is characterized in that the temperature sensor collection is compared with the temperature data that is provided with in the comparison amplifying circuit that integrated operational amplifier constitutes, if in temperature range is set, amplifier output high level, otherwise output low level, the temperature data of temperature sensor collection in Single Chip Microcomputer (SCM) system simultaneously also with temperature data be set compare, in scope is set, the P1.7 output high level of single-chip microcomputer, otherwise output low level, when having only amplifier output and P1.7 all to export high level, AND gate circuit is opened, and just can make well heater work, otherwise as long as a side judges unusual output low level, AND gate circuit is closed in the capital, stops well heater work, starts warning circuit simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100574114A CN100456196C (en) | 2007-05-22 | 2007-05-22 | Forced protecting circuit design for controlling baby's thermal-insulating box temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100574114A CN100456196C (en) | 2007-05-22 | 2007-05-22 | Forced protecting circuit design for controlling baby's thermal-insulating box temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101075141A CN101075141A (en) | 2007-11-21 |
| CN100456196C true CN100456196C (en) | 2009-01-28 |
Family
ID=38976222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100574114A Expired - Fee Related CN100456196C (en) | 2007-05-22 | 2007-05-22 | Forced protecting circuit design for controlling baby's thermal-insulating box temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100456196C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691671A (en) * | 2015-07-20 | 2017-05-24 | 飞鱼(天津)医疗器械有限公司 | Medical warming blanket |
| CN116578032B (en) * | 2023-06-29 | 2023-09-22 | 成都领目科技有限公司 | Automatic protection incubator control method and control system for low-temperature anti-fog test mode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09234227A (en) * | 1996-02-29 | 1997-09-09 | Atom Medical Kk | Medical device |
| US6350228B1 (en) * | 1999-12-11 | 2002-02-26 | Datex-Ohmeda, Inc. | Infant care apparatus with protective sound and light |
| US6443885B1 (en) * | 1999-12-17 | 2002-09-03 | DRäGER MEDIZINTECHNIK GMBH | Process for operating an incubator |
| CN2694959Y (en) * | 2003-09-01 | 2005-04-27 | 梁平 | Low temperature radiation couve use for baby |
-
2007
- 2007-05-22 CN CNB2007100574114A patent/CN100456196C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09234227A (en) * | 1996-02-29 | 1997-09-09 | Atom Medical Kk | Medical device |
| US6350228B1 (en) * | 1999-12-11 | 2002-02-26 | Datex-Ohmeda, Inc. | Infant care apparatus with protective sound and light |
| US6443885B1 (en) * | 1999-12-17 | 2002-09-03 | DRäGER MEDIZINTECHNIK GMBH | Process for operating an incubator |
| CN2694959Y (en) * | 2003-09-01 | 2005-04-27 | 梁平 | Low temperature radiation couve use for baby |
Non-Patent Citations (2)
| Title |
|---|
| C400QT或C450QT早产婴儿保育箱电路原理. 何涌，田永昌，吕靖.医疗装备，第20卷第3期. 2007 |
| C400QT或C450QT早产婴儿保育箱电路原理. 何涌，田永昌，吕靖.医疗装备，第20卷第3期. 2007 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101075141A (en) | 2007-11-21 |
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 |