CN109405994B - Accurate temperature measurement method for sharing one temperature sensor by double systems and split product - Google Patents
Accurate temperature measurement method for sharing one temperature sensor by double systems and split product Download PDFInfo
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- CN109405994B CN109405994B CN201811575186.8A CN201811575186A CN109405994B CN 109405994 B CN109405994 B CN 109405994B CN 201811575186 A CN201811575186 A CN 201811575186A CN 109405994 B CN109405994 B CN 109405994B
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 30
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
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Abstract
The invention discloses an accurate temperature measurement method of a temperature sensor shared by two systems and a split product, wherein a reference power supply is arranged in a first system, and a controllable reference power supply and a temperature sensor are arranged in a second system; powering the temperature sensor with a reference power supply in the first system during the combining of the first system with the second system; during the separation of the first system and the second system, the first system sends the voltage value of the reference power supply to the second system, the second system adjusts the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply according to the received voltage value, and the controllable reference power supply is used for supplying power to the temperature sensor. The invention adopts the reference power supply tracking principle, so that when two independent systems are separated, the reference power supply of one system can automatically track the reference power supply of the other system, thereby ensuring the consistency of temperature measurement results when the reference power supplies in different systems are used for supplying power to the same temperature sensor.
Description
Technical Field
The invention belongs to the technical field of split products, and particularly relates to a temperature measurement method applied to split electronic products.
Background
Some electronic products such as electric kettles and coffee kettles on the market at present adopt split type structural design, namely, the electric kettles comprise two independent parts of a heating base and a kettle body. Independent electric control systems are respectively arranged in the heating base and the kettle body, and each electric control system is provided with an independent reference power supply and an independent controller. In order to detect the liquid temperature in the kettle body, a temperature sensor is often arranged in an electric control system of the kettle body, the temperature sensor is usually formed by connecting a thermistor with a current-limiting resistor in series, and a temperature sampling point is arranged at a voltage dividing node between the thermistor and the current-limiting resistor and used for being connected with a controller to realize a temperature detection function. In circuit design, a reference power supply is needed to supply power to the temperature sensor, and the temperature of the kettle body can be calculated by collecting the voltage value of the temperature sampling point as the resistance value of the thermistor can be changed along with the change of the temperature of the kettle body.
In the actual use process, when the kettle body is placed on the heating base, a reference power supply in the heating base is generally utilized to supply power to a temperature sensor in the kettle body, and a controller in the heating base is used for collecting a voltage value of a temperature sampling point on the temperature sensor, so that the temperature of the kettle body is converted and displayed on a display screen of the heating base for a user to check. When the kettle body leaves the heating base, the reference power supply in the kettle body is needed to supply power to the temperature sensor, the voltage value of the temperature sampling point on the temperature sensor is collected through the controller in the kettle body, and the temperature of the kettle body is converted and then sent to the heating base to be displayed through the display screen on the heating base.
The temperature measurement mode of the two systems sharing one temperature sensor can cause the problem of inconsistent temperature measured by the two systems when the reference power supplies in the two independent systems are inconsistent due to certain factors. For example, for a kettle body of the same temperature, the displayed temperature when the kettle body is placed on the heating base will be different from the displayed temperature when the kettle body leaves the heating base, which is easy to cause confusion in use by consumers. For other types of dual system products, the problem of inconsistent temperature measurements can also cause inaccuracy in control, which in turn affects the reliability of the product operation.
Disclosure of Invention
The invention aims to provide an accurate temperature measurement method for a temperature sensor shared by two systems, which ensures that the measured temperature of the two systems is the same under the conditions of combination and separation.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
in one aspect, the present invention provides a method for accurately measuring temperature by two systems sharing a temperature sensor, comprising: setting a reference power supply in a first system, and setting a controllable reference power supply and a temperature sensor in a second system; powering the temperature sensor with a reference power supply in the first system during the combining of the first system with the second system; during the separation of the first system and the second system, the first system sends the voltage value of the reference power supply to the second system, the second system adjusts the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply according to the received voltage value, and the controllable reference power supply is used for supplying power to the temperature sensor.
Further, during the combination of the first system and the second system, the first system is utilized to collect the detection signal output by the temperature sensor, and the temperature measurement value is converted; and during the separation of the first system and the second system, the second system is used for collecting the detection signal output by the temperature sensor, converting the temperature measurement value and then transmitting the temperature measurement value to the first system.
In another aspect, the present invention also provides a split product comprising separate first and second devices; wherein a reference power supply and a first controller are provided in the first device; a controllable reference power supply, a temperature sensor and a second controller are arranged in the second device; the second device is communicated with the reference power supply during the combination with the first device by the temperature sensor, and outputs a detection signal to the first controller; the second device, during separation from the first device, the first controller sending a voltage value of the reference power supply to the second controller, the second controller regulating the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply; the temperature sensor is communicated with the controllable reference power supply and outputs a detection signal to the second controller.
Further, wireless communication modules are further arranged in the first device and the second device respectively, and during the separation period of the second device and the first device, the second controller generates a temperature measured value according to a detection signal output by the temperature sensor and sends the temperature measured value to the first controller through the wireless communication modules.
In order to realize the display output of the temperature measurement result, a display screen is also arranged on the first device and is connected with the first controller; during the combination of the second device and the first device, the first controller generates a temperature measured value according to a detection signal output by the temperature sensor and transmits the temperature measured value to the display screen for display; during the separation of the second device from the first device, the first controller sends the temperature measurement value received through the wireless communication module to the display screen for display.
In order to provide an accurate reference voltage for a controllable reference power supply, the first controller is designed to detect the output voltage of the reference power supply during the separation of the second device and the first device, generate a voltage value of the reference power supply and send the voltage value to the second controller through the wireless communication module. The actual output voltage of the reference power supply is detected and is transmitted to the second controller as the reference voltage to regulate the controllable reference power supply, so that the problem that the reference voltage provided to the second controller is inaccurate when the output voltage of the reference power supply changes due to certain factors during the use of the first device can be solved, and the consistency of temperature measurement can be further ensured.
In order to improve the accuracy of the output voltage of the controllable reference power supply, the second controller is designed to collect the output voltage of the controllable reference power supply after generating an adjusting instruction according to the voltage value of the received reference power supply and transmitting the adjusting instruction to the controllable reference power supply, and if the output voltage of the controllable reference power supply is inconsistent with the voltage value of the reference power supply, the controllable reference power supply is continuously adjusted until the output voltage of the controllable reference power supply is stabilized on the voltage value of the reference power supply.
Further, a battery and a voltage stabilizing circuit are further arranged in the second device, and the voltage stabilizing circuit performs direct current conversion on the battery voltage and then outputs the battery voltage to the input end of the controllable reference power supply to supply power for the controllable reference power supply; the controllable reference power supply is connected with the second controller through a bus and receives an adjusting instruction output by the second controller; the second controller is connected with the output end of the controllable reference power supply through an analog-to-digital conversion interface and collects the output voltage of the controllable reference power supply.
Still further, connectors are provided on the first device and the second device for connection of the first device and the second device; the first controller and the second controller determine the combination and separation states of the first device and the second device according to the connection state of the connector; during the combination of the second device and the first device, a reference power supply in the first device is communicated with a temperature sensor in the second device through the connector to supply power to the temperature sensor; a controllable switch is also arranged in the second device and is connected between the controllable reference power supply and the temperature sensor; the second controller controls the controllable switch to cut off the connection between the controllable reference power supply and the temperature sensor when detecting that the first device is combined with the second device; and when the second controller detects that the first device is separated from the second device, the controllable switch is controlled to be communicated with the controllable reference power supply and the temperature sensor, and the controllable reference power supply is used for supplying power to the temperature sensor.
Preferably, a thermistor and a current limiting resistor which are connected in series are arranged in the temperature sensor, and voltage dividing nodes of the thermistor and the current limiting resistor are respectively connected with the connector and the second controller; the first controller is communicated with the voltage dividing node through the connector when the first device is combined with the second device, and receives a detection signal output by the temperature sensor; the second controller receives the detection signal output by the voltage division node during the period when the first device is separated from the second device.
Compared with the prior art, the invention has the advantages and positive effects that: the invention aims at the double systems sharing one temperature sensor, adopts the reference power supply tracking principle, and enables the reference power supply of one system to automatically track the reference power supply of the other system when two independent systems are separated, thereby ensuring the consistency of temperature measurement results when the reference power supplies in different systems are used for supplying power to the same temperature sensor, and further obviously improving the accuracy of temperature detection.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Drawings
FIG. 1 is a schematic block circuit diagram of one embodiment of a split product according to the present invention;
fig. 2 is a specific schematic circuit diagram of an embodiment of the second device of fig. 1.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
The embodiment provides an accurate temperature measurement method aiming at a double independent system sharing one temperature sensor. The method adopts a reference power supply tracking technology, a reference power supply is arranged in a first system, a controllable reference power supply and a temperature sensor are arranged in a second system, and the second system is designed to supply power to the temperature sensor by utilizing the reference power supply in the first system during the combination of the second system and the first system; and during the separation of the second system and the first system, the first system is designed to send the voltage value of the reference power supply to the second system, so that the second system can adjust the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply according to the received voltage value, and therefore, when the controllable reference power supply is used for supplying power to the temperature sensor, the power supply voltage received by the temperature sensor can be kept consistent, the problem that the measured temperatures of the two systems are inconsistent due to the fact that the reference power supplies in the two independent systems are inconsistent due to certain factors is solved, and the accuracy of the temperature measurement of the two systems is improved.
To implement the above control strategy, the present embodiment proposes a preferred dual-system circuit design in combination with a split electronic product, as shown in fig. 1. The split electronic product of the embodiment includes two independent devices, namely a first device and a second device. A first system is provided in a first device and a second system is provided in a second device. The first device comprises a reference power supply, a first controller CPU1, a display screen and other main components; the second device comprises a controllable reference power supply, a second controller CPU2, a temperature sensor and other main components. And connectors which can be in matched connection are respectively arranged on the first device and the second device, when the first device and the second device are combined through the connectors, a temperature sensor in the second device is arranged to be communicated with a reference power supply in the first device through the connectors, the reference power supply in the first device is used for supplying power to the temperature sensor, a first controller CPU1 in the first device is used for collecting a detection signal ADC-W1 output by the temperature sensor, and then a temperature measurement value is calculated and output to a display screen for display output. And when the second device is separated from the first device, the temperature sensor in the second device is communicated with the controllable reference power supply in the second device, the first controller CPU1 in the first device is arranged to send the voltage value VOUT1 of the reference power supply to the second controller CPU2, and the output voltage of the controllable reference power supply is regulated to be equal to the voltage value VOUT1 of the reference power supply through the second controller CPU2, so that tracking of the controllable reference power supply to the reference power supply is realized. Then, a controllable reference power supply in the second device is used for supplying power to the temperature sensor, a detection signal ADC-2 output by the temperature sensor is sent to the second controller CPU2, and after the temperature measured value is calculated by the second controller CPU2, the temperature measured value is transmitted back to the first controller CPU1 in the first device, and then the first controller CPU1 is used for controlling the display screen to output and display.
Since the power supply voltage received by the temperature sensor is kept uniform during the coupling and decoupling of the first device and the second device, the uniformity of the temperature detection result can be ensured.
In the present embodiment, a connection state detection circuit may be provided in the connector, and a state signal may be generated and transmitted to the first controller CPU1 and the second controller CPU2. The first controller CPU1 and the second controller CPU2 implement automatic recognition of the combined and separated states of the first device and the second device according to the received state signals.
In order to control the controllable reference power supply to stop supplying power to the temperature sensor during the combination of the first device and the second device, and to automatically supply power to the temperature sensor during the separation of the first device and the second device, the embodiment is further provided with a controllable switch in the second device, which is connected between the controllable reference power supply and the temperature sensor. When the second controller CPU2 detects that the first device is combined with the second device, the controllable switch is controlled to be turned off, and a connection line between the controllable reference power supply and the temperature sensor is cut off, so that the temperature sensor only receives power supply from the reference power supply in the first device. When the second controller CPU2 detects that the first device is separated from the second device, the controllable switch is controlled to be closed, a connecting line between the controllable reference power supply and the temperature sensor is communicated, and the power supply of the temperature sensor is switched to the controllable reference power supply.
As a preferred circuit design of this embodiment, the controllable switch may select one NMOS Q1 to perform system circuit design, as shown in fig. 2. The grid electrode of the NMOS tube Q1 is connected to one path of GPIO (general purpose input/output) port of the second controller CPU2, and receives a switch control signal CTL-2 output by the second controller CPU2. The drain electrode of the NMOS tube Q1 is connected to the output end Vout of the controllable reference power supply IC-1, and the source electrode of the NMOS tube Q1 is connected with the temperature sensor. When the second controller CPU2 detects that the first device is combined with the second device, a switch control signal CTL-2 in a low level state is output, the NMOS tube Q1 is controlled to be cut off, and a connecting line between the controllable reference power supply and the temperature sensor is cut off. When the second controller CPU2 detects that the first device is separated from the second device, a switch control signal CTL-2 in a high level state is output, the NMOS tube Q1 is controlled to be saturated and conducted, and a connecting line between the controllable reference power supply and the temperature sensor is communicated.
In this embodiment, the temperature sensor is formed by connecting a thermistor RT-1 and a current limiting resistor R3 in series, and is connected between the source of the NMOS transistor Q1 and the system ground GND. The voltage division nodes of the thermistor RT-1 and the current limiting resistor R3 are used as terminals for outputting detection signals of the temperature sensor, and are correspondingly connected with the connector and one path of analog-to-digital conversion interface ADC-3 of the second controller CPU2 respectively. When the temperature of the second device changes, the resistance of the thermistor RT-1 changes, so that the voltage division value at the voltage division node between the thermistor RT-1 and the current limiting resistor R3 changes, that is, the detection signal output by the temperature sensor changes. During the combination of the first device and the second device, the first controller CPU1 is connected with the connector through an analog-digital conversion interface thereof, receives the partial pressure value, converts the temperature measured value according to the partial pressure value, and controls the display screen to output and display. During the separation of the first device and the second device, the second controller CPU2 starts the analog-digital conversion interface ADC-3 to collect the partial pressure value, converts the temperature measured value according to the partial pressure value, and transmits the temperature measured value back to the first controller CPU1, so that the temperature change of the second device can be accurately displayed even if the first device is separated from the second device.
Setting the second controller CPU2 to pass I 2 The C bus is connected with communication interfaces SDA and SCL of a controllable reference power supply, an input end Vin of the controllable reference power supply is connected with a direct-current power supply VCC, and an output end Vout of the controllable reference power supply is connected with another path of analog-digital conversion interface ADC-2 of the second controller CPU2. When the second controller CPU2 detects that the second device is separated from the first device, it receives the reference voltage sent by the first device, where the reference voltage is the voltage value VOUT1 of the reference power supply. The second controller CPU2 generates a regulating command CTL-1 according to the received voltage value VOUT1, and the regulating command CTL-1 is controlled by I 2 The C bus is sent to communication interfaces SDA and SCL of the controllable reference power supply IC-1, and the controllable reference power supply IC-1 is controlled to adjust the voltage of the output end Vout of the controllable reference power supply IC-1 to the voltage value VOUT1, so that tracking of the controllable reference power supply IC-1 to the reference power supply is realized.
Considering that the actual output voltage of some controllable reference power supply IC-1 is often deviated from the received adjustment command, the embodiment preferably uses the analog-to-digital conversion interface ADC-2 of the second controller CPU2 to collect the voltage value VOUT2 actually output by the controllable reference power supply IC-1, and compares the voltage value VOUT1 with the received voltage value VOUT1 to generate a trimming command, so as to transmit the trimming command to the communication interfaces SDA and SCL of the controllable reference power supply IC-1, thereby trimming the controllable reference power supply IC-1, so that the output voltage of the controllable reference power supply IC-1 can be always stabilized on the voltage value VOUT1 of the reference power supply, and the purpose of accurate tracking is achieved.
For the voltage value VOUT1 of the reference power supply, the present embodiment is preferably determined by means of actual measurement. That is, one path of analog-to-digital conversion interface ADC-1 of the first controller CPU1 is connected to the output end of the reference power supply, and the voltage value actually output by the reference power supply is collected and is used as VOUT1 to be sent to the second device when the first device is separated from the second device, so that the problem that the reference voltage provided to the second device is inaccurate when the output voltage of the reference power supply varies due to some factors during the use of the first device can be solved, and the consistency of the temperature measurement result can be further ensured.
The dc power VCC required for the operation of the controllable reference power supply IC-1 may be provided in a number of ways. For example, a battery and a voltage stabilizing circuit may be provided in the second device, the voltage stabilizing circuit is connected to the battery, the dc power VCC is generated after performing dc conversion on the battery voltage, and the generated dc power VCC is output to the input terminal Vin of the controllable reference power IC-1, so as to supply power to the controllable reference power IC-1. I of communication interface SDA, SCL connected with the controllable reference power supply IC-1 2 And the C bus can be connected to the direct current power supply VCC through pull-up resistors R1 and R2 so as to improve the reliability of bus signal transmission.
In this embodiment, wireless communication modules, such as bluetooth modules, are further disposed in the first device and the second device, respectively, and the first controller CPU1 and the second controller CPU2 are connected to each other, as shown in fig. 1. After the first device is separated from the second device, the first controller CPU1 wirelessly transmits the voltage value VOUT1 of the reference power supply to the second device through the Bluetooth module to track the reference power supply; meanwhile, the second controller CPU2 transmits the acquired temperature measurement value back to the first device through the Bluetooth module, so that the display output of the temperature measurement result is realized.
By adopting the reference power supply tracking technology of the embodiment, the output voltage of the controllable reference power supply can be accurately tracked to be within 0.51mV, so that the deviation of a temperature measurement result is controlled to be within 0.1 ℃, and the consistency of the temperature measurement of the dual system is improved.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that other variations, modifications, additions and substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Claims (10)
1. An accurate temperature measurement method for a dual system sharing a temperature sensor, comprising:
setting a reference power supply in a first system, and setting a controllable reference power supply and a temperature sensor in a second system;
powering the temperature sensor with a reference power supply in the first system during the combining of the first system with the second system;
during the separation of the first system and the second system, the first system sends the voltage value of the reference power supply to the second system, the second system adjusts the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply according to the received voltage value, and the controllable reference power supply is used for supplying power to the temperature sensor.
2. The method for accurately measuring temperature according to claim 1, wherein,
during the combination of the first system and the second system, the first system is utilized to collect the detection signal output by the temperature sensor and convert the temperature measurement value;
and during the separation of the first system and the second system, the second system is used for collecting the detection signal output by the temperature sensor, converting the temperature measurement value and then transmitting the temperature measurement value to the first system.
3. A split product comprising a first device and a second device which are independent, characterized in that,
a reference power supply and a first controller are arranged in the first device;
a controllable reference power supply, a temperature sensor and a second controller are arranged in the second device;
connectors are also arranged on the first device and the second device and are used for connecting the first device and the second device; the first controller and the second controller determine the combination and separation states of the first device and the second device according to the connection state of the connector;
the second device is communicated with the reference power supply during the combination with the first device by the temperature sensor, and outputs a detection signal to the first controller;
the second device, during separation from the first device, the first controller sending a voltage value of the reference power supply to the second controller, the second controller regulating the output voltage of the controllable reference power supply to be equal to the voltage value of the reference power supply; the temperature sensor is communicated with the controllable reference power supply and outputs a detection signal to the second controller.
4. A split product according to claim 3, wherein wireless communication modules are further provided in the first and second devices, respectively, and the second controller generates a temperature measurement value from a detection signal output from the temperature sensor during separation of the second device from the first device, and transmits the temperature measurement value to the first controller through the wireless communication modules.
5. The split product of claim 4, wherein the split product comprises,
the first device is also provided with a display screen which is connected with the first controller;
during the combination of the second device and the first device, the first controller generates a temperature measured value according to a detection signal output by the temperature sensor and transmits the temperature measured value to the display screen for display;
during the separation of the second device from the first device, the first controller sends the temperature measurement value received through the wireless communication module to the display screen for display.
6. The split product of claim 4, wherein the first controller detects an output voltage of the reference power supply during separation of the second device from the first device, generates a voltage value of the reference power supply, and transmits the voltage value to the second controller through the wireless communication module.
7. A split product according to claim 3, wherein the second controller collects the output voltage of the controllable reference power supply after generating the adjustment command according to the voltage value of the reference power supply and transmitting the adjustment command to the controllable reference power supply, and if the output voltage of the controllable reference power supply is inconsistent with the voltage value of the reference power supply, continues to adjust the controllable reference power supply until the output voltage of the controllable reference power supply is stabilized on the voltage value of the reference power supply.
8. The split product according to claim 7, wherein a battery and a voltage stabilizing circuit are further arranged in the second device, and the voltage stabilizing circuit performs direct current conversion on the battery voltage and outputs the battery voltage to the input end of the controllable reference power supply to supply power to the controllable reference power supply; the controllable reference power supply is connected with the second controller through a bus and receives an adjusting instruction output by the second controller; the second controller is connected with the output end of the controllable reference power supply through an analog-to-digital conversion interface and collects the output voltage of the controllable reference power supply.
9. The split product of any one of claims 3 to 8, wherein,
a controllable switch is also arranged in the second device and is connected between the controllable reference power supply and the temperature sensor; the second controller controls the controllable switch to cut off the connection between the controllable reference power supply and the temperature sensor when detecting that the first device is combined with the second device; and when the second controller detects that the first device is separated from the second device, the controllable switch is controlled to be communicated with the controllable reference power supply and the temperature sensor, and the controllable reference power supply is used for supplying power to the temperature sensor.
10. The split product of claim 9, wherein a thermistor and a current limiting resistor are provided in series in the temperature sensor, and voltage dividing nodes of the thermistor and the current limiting resistor are connected with the connector and the second controller, respectively; the first controller is communicated with the voltage dividing node through the connector when the first device is combined with the second device, and receives a detection signal output by the temperature sensor; the second controller receives the detection signal output by the voltage division node during the period when the first device is separated from the second device.
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030320U (en) * | 1988-04-30 | 1989-01-04 | 林洪达 | Electronic admeasuring instrument for temperature and temp. diffential |
| KR980010924A (en) * | 1996-07-15 | 1998-04-30 | 이시이 쇼주 | Sensor signal processing circuit device |
| CN201143127Y (en) * | 2007-12-12 | 2008-11-05 | 广东新宝电器股份有限公司 | Electric kettle with temperature display |
| CN201147216Y (en) * | 2008-01-19 | 2008-11-12 | 广东天际电器有限公司 | Electric heating kettle |
| CN101345478A (en) * | 2007-07-12 | 2009-01-14 | 半导体元件工业有限责任公司 | Power supply controller and method therefor |
| CN102175347A (en) * | 2011-02-15 | 2011-09-07 | 钜泉光电科技(上海)股份有限公司 | Calibration method and calibration system of temperature sensor |
| CN102840925A (en) * | 2012-09-20 | 2012-12-26 | 卓捷创芯科技（深圳）有限公司 | Temperature measurement and correction circuit, passive radio frequency identification label and temperature measurement method |
| CN103185645A (en) * | 2011-12-29 | 2013-07-03 | 中国科学院沈阳自动化研究所 | High-precision temperature detecting device and detecting method applied to draught fan control system |
| CN104501986A (en) * | 2014-12-16 | 2015-04-08 | 北京航天时代光电科技有限公司 | High-precision wide-range temperature measurement system |
| CN204718704U (en) * | 2015-05-25 | 2015-10-21 | 北京空间机电研究所 | A kind of camera space distributed temperature measuring device |
| CN205625600U (en) * | 2016-03-01 | 2016-10-12 | 广东美的生活电器制造有限公司 | Electric kettle |
| CN108143262A (en) * | 2016-12-02 | 2018-06-12 | 佛山市顺德区美的电热电器制造有限公司 | Split-type electric pressure cooker |
| CN207561726U (en) * | 2017-05-04 | 2018-07-03 | 佛山市顺德区美的电热电器制造有限公司 | Split cooking apparatus |
| CN108318154A (en) * | 2018-01-29 | 2018-07-24 | 广东美的暖通设备有限公司 | Temperature sensor fault diagnostic circuit, diagnostic method and refrigeration equipment |
| CN108344522A (en) * | 2018-02-09 | 2018-07-31 | 武汉盛硕电子有限公司 | A kind of high-precision measurement circuit that band is calibrated automatically and method |
| CN209085796U (en) * | 2018-12-21 | 2019-07-09 | 歌尔科技有限公司 | A kind of separated electronic product sharing a temperature sensor thermometric |
-
2018
- 2018-12-21 CN CN201811575186.8A patent/CN109405994B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030320U (en) * | 1988-04-30 | 1989-01-04 | 林洪达 | Electronic admeasuring instrument for temperature and temp. diffential |
| KR980010924A (en) * | 1996-07-15 | 1998-04-30 | 이시이 쇼주 | Sensor signal processing circuit device |
| CN101345478A (en) * | 2007-07-12 | 2009-01-14 | 半导体元件工业有限责任公司 | Power supply controller and method therefor |
| CN201143127Y (en) * | 2007-12-12 | 2008-11-05 | 广东新宝电器股份有限公司 | Electric kettle with temperature display |
| CN201147216Y (en) * | 2008-01-19 | 2008-11-12 | 广东天际电器有限公司 | Electric heating kettle |
| CN102175347A (en) * | 2011-02-15 | 2011-09-07 | 钜泉光电科技(上海)股份有限公司 | Calibration method and calibration system of temperature sensor |
| CN103185645A (en) * | 2011-12-29 | 2013-07-03 | 中国科学院沈阳自动化研究所 | High-precision temperature detecting device and detecting method applied to draught fan control system |
| CN102840925A (en) * | 2012-09-20 | 2012-12-26 | 卓捷创芯科技（深圳）有限公司 | Temperature measurement and correction circuit, passive radio frequency identification label and temperature measurement method |
| CN104501986A (en) * | 2014-12-16 | 2015-04-08 | 北京航天时代光电科技有限公司 | High-precision wide-range temperature measurement system |
| CN204718704U (en) * | 2015-05-25 | 2015-10-21 | 北京空间机电研究所 | A kind of camera space distributed temperature measuring device |
| CN205625600U (en) * | 2016-03-01 | 2016-10-12 | 广东美的生活电器制造有限公司 | Electric kettle |
| CN108143262A (en) * | 2016-12-02 | 2018-06-12 | 佛山市顺德区美的电热电器制造有限公司 | Split-type electric pressure cooker |
| CN207561726U (en) * | 2017-05-04 | 2018-07-03 | 佛山市顺德区美的电热电器制造有限公司 | Split cooking apparatus |
| CN108318154A (en) * | 2018-01-29 | 2018-07-24 | 广东美的暖通设备有限公司 | Temperature sensor fault diagnostic circuit, diagnostic method and refrigeration equipment |
| CN108344522A (en) * | 2018-02-09 | 2018-07-31 | 武汉盛硕电子有限公司 | A kind of high-precision measurement circuit that band is calibrated automatically and method |
| CN209085796U (en) * | 2018-12-21 | 2019-07-09 | 歌尔科技有限公司 | A kind of separated electronic product sharing a temperature sensor thermometric |
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