CN206585769U - A kind of thermostatically controlled fever tablet - Google Patents
A kind of thermostatically controlled fever tablet Download PDFInfo
- Publication number
- CN206585769U CN206585769U CN201720248990.XU CN201720248990U CN206585769U CN 206585769 U CN206585769 U CN 206585769U CN 201720248990 U CN201720248990 U CN 201720248990U CN 206585769 U CN206585769 U CN 206585769U
- Authority
- CN
- China
- Prior art keywords
- temperature
- fever tablet
- resistance
- output
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 206010037660 Pyrexia Diseases 0.000 title claims abstract description 59
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000001225 therapeutic effect Effects 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The utility model provides a kind of thermostatically controlled fever tablet, fever tablet power supply, the temperature sensing circuit of detection fever tablet temperature exported including power-adjustable, described fever tablet power supply sending and receiving backing, power output is reduced when temperature sensing circuit detection temperature is higher than setting, the increasing output power when temperature sensing circuit detection temperature is less than setting, power output is kept when temperature sensing circuit detection temperature is equal to setting during reduction power output；Described temperature sensing circuit includes the circuit of measurement heating sheet resistance, compared with resistance of the measurement resistance sizes of the circuit output of described measurement heating sheet resistance when described fever tablet is in design temperature, if the measurement resistance of the circuit output of measurement heating sheet resistance is more than resistance of the described fever tablet in design temperature, the temperature of fever tablet is higher than design temperature.The utility model determines fever tablet temperature by the way of detection resistance, it is not necessary to be further added by wire.
Description
Technical field
The utility model is related to a kind of thermostatically controlled fever tablet.
Background technology
In the existing Tepid therapeutic equipment in market or in the relevant human body heating low pressure constant temperature control circuit of other classes, to electrode
The control of piece caloric value is mainly in the following manner：Temperature sensitive resister is implanted into simultaneously in fever tablet as temperature sensor, is passed through
The temperature of temperature sensor measurement fever tablet, then, is controlled to fever tablet, appropriate if temperature is higher than desired temperature
Reduction fever tablet and power, if the temperature of fever tablet is less than desired temperature, suitably lifted to fever tablet caloric value.
Because there is the presence of temperature sensor in such Tepid therapeutic equipment, fever tablet is caused to connect wire core quantity by original
Two be changed into 3 or 4 and cause connector complicated, reliability reduction.
Utility model content
When the utility model is directed to the temperature that temperature sensor measurement fever tablet is used in current Tepid therapeutic equipment, cause hair
Backing connection wire core quantity is changed into 3 or 4 from original two causes connector complicated, the deficiency of reliability reduction, carries
For a kind of thermostatically controlled fever tablet, the mode of its temperature is judged by the way of the resistance of detection fever tablet.
The utility model is to realize that the technical scheme that its technical purpose is used is：A kind of thermostatically controlled fever tablet, bag
Include the fever tablet power supply of power-adjustable output, detect the temperature sensing circuit of fever tablet temperature, described fever tablet power supply sending and receiving
Backing, reduces power output when temperature sensing circuit detection temperature is higher than setting, is less than in temperature sensing circuit detection temperature
Increasing output power during setting, output work is kept when temperature sensing circuit detection temperature is equal to setting during reduction power output
Rate；Described temperature sensing circuit includes the circuit of measurement heating sheet resistance, the described circuit output for measuring heating sheet resistance
Resistance of measurement resistance sizes when described fever tablet is in design temperature compared with, if the circuit of measurement heating sheet resistance is defeated
The measurement resistance gone out is more than resistance of the described fever tablet in design temperature, then the temperature of fever tablet is higher than design temperature.
The utility model determines fever tablet temperature by the way of detection resistance, it is not necessary to be further added by wire.
Further, in above-mentioned thermostatically controlled fever tablet：The circuit of measurement heating sheet resistance is examined including high side current
Amplifier chip U1, its model is MAX4173T, and described high side current detects the 1st of amplifier chip U1 the, 2 pin ground connection,
3rd pin welding system power supply, in the indirect electric capacity C4 of the 1st the 3rd pin；4th pin and the 5th pin it is indirectly be connected in parallel on fever tablet power supply and
Resistance R5 and resistance R6 on wire between fever tablet；6th pin output detection electric current.
Below with reference to drawings and examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 the utility model embodiment current detection circuit schematic diagrams.
Embodiment
The present embodiment is the thermostatically controlled fever tablet in a kind of Tepid therapeutic equipment, includes the fever tablet of power-adjustable output
Power supply, the temperature sensing circuit for detecting fever tablet temperature, described fever tablet power supply sending and receiving backing, in temperature sensing circuit detection
Power output is reduced when temperature is higher than setting, the increasing output power when temperature sensing circuit detection temperature is less than setting, in temperature
When degree detection electric circuit inspection temperature is equal to setting power output is kept during reduction power output；Temperature sensing circuit includes measurement and sent out
The circuit of backing resistance, the measurement resistance sizes of the circuit output of measurement heating sheet resistance and described fever tablet are in design temperature
When resistance compare, if measurement heating sheet resistance circuit output measurement resistance be more than described fever tablet in design temperature
When resistance, then the temperature of fever tablet be higher than design temperature.
By measuring the voltage at fever tablet two ends and flowing through the electric current of fever tablet in the present embodiment, R=is used using formula
U/I formula, which is calculated, can calculate its resistance, and the voltage of fever tablet is fixed in Tepid therapeutic equipment, measures fever tablet electric current
Circuit as shown in figure 1, detecting amplifier chip U1 including high side current, its model is MAX4173T, and high side current detection is put
Greatly the 1st of device chip U1 the, 2 pin ground connection, the 3rd pin welding system power supply, in the indirect electric capacity C4 of the 1st the 3rd pin；4th pin and the 5th pin
The resistance R5 and resistance R6 being connected in parallel on indirectly on the wire between fever tablet power supply and fever tablet；6th pin output detection electric current.
The filter circuit output DC level for exporting termination current-limiting resistance R4 and filter capacitor C5 compositions in the 6th pin can be with by AD conversion
Expression flows through the electric current of fever tablet, and the temperature of electric heating piece can be represented by calculating.Electric heating piece can be being measured in advance
Temperature-resistance corresponding table.
In the present embodiment, realized according to the resistance of the metal fever tablet characteristic different to temperature according to heating wire resistance
Thermostatic control is realized in change judgement.
Current fever tablet is calculated by the change of heating wire resistance during the measurement and heating to environment temperature to show
There is temperature, so as to realize thermostatic control.
The corresponding resistance R0 of the heating wire is measured first before heating wire heating, while now passing through temperature sensitive resister on plate
Learn, the corresponding temperature of R0 is T0, subsequent switching tube is opened, and heating wire is begun to warm up, and is heated to heating wire pair after certain temperature
The resistance answered is R1, while this kind of exothermic material (such as NI of more than 99.9% purity) has the specific heat α of good linear, according to etc.
Formula：
R1 ≈ R0 (1+ α * (T1-T0)) can calculate the now corresponding temperature of heating wire.
Claims (2)
1. a kind of thermostatically controlled fever tablet, includes fever tablet power supply, the temperature of detection fever tablet temperature of power-adjustable output
Circuit is detected, described fever tablet power supply sending and receiving backing reduces output work when temperature sensing circuit detection temperature is higher than setting
Rate, the increasing output power when temperature sensing circuit detection temperature is less than setting, is equal in temperature sensing circuit detection temperature and sets
Power output is kept during timing reduction power output；It is characterized in that：Described temperature sensing circuit includes measurement fever tablet electricity
The circuit of resistance, the measurement resistance sizes of the circuit output of described measurement heating sheet resistance and described fever tablet are in design temperature
When resistance compare, if measurement heating sheet resistance circuit output measurement resistance be more than described fever tablet in design temperature
When resistance, then the temperature of fever tablet be higher than design temperature.
2. thermostatically controlled fever tablet according to claim 1, it is characterised in that：Wrapped in the circuit of measurement heating sheet resistance
The measuring circuit to the electric current of fever tablet and the measuring circuit of voltage are included, described current measurement circuit is detected including high side current
Amplifier chip U1, its model is MAX4173T, and described high side current detects the 1st of amplifier chip U1 the, 2 pin ground connection, the 3rd
Pin welding system power supply, in the indirect electric capacity C4 of the 1st the 3rd pin；4th pin and the 5th pin is is connected in parallel on fever tablet power supply and heating indirectly
Resistance R5 and resistance R6 on wire between piece；6th pin output detection electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248990.XU CN206585769U (en) | 2017-03-15 | 2017-03-15 | A kind of thermostatically controlled fever tablet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248990.XU CN206585769U (en) | 2017-03-15 | 2017-03-15 | A kind of thermostatically controlled fever tablet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206585769U true CN206585769U (en) | 2017-10-24 |
Family
ID=60111923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720248990.XU Expired - Fee Related CN206585769U (en) | 2017-03-15 | 2017-03-15 | A kind of thermostatically controlled fever tablet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206585769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618206A (en) * | 2018-04-10 | 2018-10-09 | 绿烟实业（深圳）有限公司 | Smoking set equipment and method for measuring and controlling temp for the smoking set equipment |
-
2017
- 2017-03-15 CN CN201720248990.XU patent/CN206585769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618206A (en) * | 2018-04-10 | 2018-10-09 | 绿烟实业（深圳）有限公司 | Smoking set equipment and method for measuring and controlling temp for the smoking set equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207133671U (en) | A kind of temperature is precisely controlled device | |
| CN107941363B (en) | Temperature pick-up device and method based on program-controlled double constant-current supplies | |
| CN102353806A (en) | Temperature compensation circuit and method thereof for heat-sensitive flow rate sensor, and automatic adjusting method for power of heat-sensitive flow rate sensor | |
| CN206585769U (en) | A kind of thermostatically controlled fever tablet | |
| CN202135341U (en) | Electrothermal controller safety circuit | |
| CN202664977U (en) | Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof | |
| CN104242388B (en) | Charging circuit, battery core and mobile terminal | |
| CN103399597A (en) | Thermostatic control circuit and method for intelligent electric soldering iron | |
| CN107505035A (en) | The method for heating and controlling and system of a kind of Weight-detecting device, Weight-detecting device | |
| CN205537966U (en) | Calorific capacity detection device of battery tab or battery connection piece | |
| CN107402230B (en) | Tobacco product smoke concentration measuring device and method | |
| CN208607340U (en) | The current detection circuit and power supply of power supply | |
| CN102727021A (en) | Intelligent control DC (direct current) low-voltage electric heating quilt/blanket and intelligent control circuit of intelligent control DC low-voltage electric heating quilt/blanket | |
| CN103439997B (en) | The electric soldering iron control method of adjustable thermostatic and device | |
| CN206237171U (en) | A kind of electronic cigarette of constant power output | |
| CN202171754U (en) | Multi-path constant temperature controller | |
| CN201845483U (en) | Multi-functional temperature control experiment instrument | |
| CN106841764B (en) | A method of output electric current measure is realized using MOSFET pipe internal resistance | |
| CN203788480U (en) | Circuit for controlling metal ceramic heating element through bidirectional silicon controlled rectifier | |
| CN205229315U (en) | Accompany tropical endurance test detection device | |
| CN206863200U (en) | A kind of electric knife power output calibrating installation | |
| CN107677708A (en) | The method for automatically adjusting gas sensory sensor preheating time | |
| CN101532884B (en) | A coffee machine instant heating type heating body temperature measurement method | |
| CN208048518U (en) | Intelligent field heated sleeping bag | |
| CN209086768U (en) | PWM formula temperature controller for electrical detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |