CN209085796U - A kind of separated electronic product sharing a temperature sensor thermometric - Google Patents
A kind of separated electronic product sharing a temperature sensor thermometric Download PDFInfo
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- CN209085796U CN209085796U CN201822158492.3U CN201822158492U CN209085796U CN 209085796 U CN209085796 U CN 209085796U CN 201822158492 U CN201822158492 U CN 201822158492U CN 209085796 U CN209085796 U CN 209085796U
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- power supply
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Abstract
The utility model discloses a kind of separated electronic products for sharing a temperature sensor thermometric, including independent first device and second device；Reference power supply and the first controller are provided in the first device；Controllable reference power supply, temperature sensor and second controller are provided in the second device；For the second device during in conjunction with first device, the temperature sensor is connected to the reference power supply, and exports detection signal and be sent to first controller；For the second device during separating with first device, the voltage value of the reference power supply is sent to the second controller by first controller, and the output voltage that the second controller adjusts the controllable reference power supply is equal to the voltage value of the reference power supply；The temperature sensor is connected to the controllable reference power supply, and exports detection signal and be transmitted to the second controller.The utility model uses reference power supply tracking technique, ensure that the consistency of dual system temperature measurement result.
Description
Technical field
The utility model belongs to split type product technical field, specifically, being to be related to a kind of apply in separated electronic
Temperature measurement technology in product.
Background technique
The electronic products such as current certain electric kettles on the market, coffee pot, all adopt a split structure design, that is, packet
Include two independent sectors of heated base and kettle body.Independent electric-control system is respectively arranged in heated base and kettle body, every
Independent reference power supply and independent controller are provided in one electric-control system.In order to detect the fluid temperature in kettle body,
Temperature sensor is often provided in the electric-control system of kettle body, and the temperature sensor generallys use thermistor and current limliting
Resistance is connected in series, and temperature sampling point is arranged at the divider node between thermistor and current-limiting resistance, for connecting
Controller realizes temperature detecting function.In circuit design, need using reference power supply to be temperature sensor power supply, due to heat
The resistance value of quick resistance can follow the variation of kettle body temperature and change, and therefore, acquire the voltage value of the temperature sampling point
Converse the temperature of kettle body.
In actual use, when kettle body is placed on heated base, the benchmark electricity in heated base is usually utilized
Source is the temperature sensor power supply in kettle body, and passes through the temperature sampling on the controller temperature collection sensor in heated base
The voltage value of point, and then kettle body temperature is conversed, it is shown on the display screen of heated base, is checked for user.And when kettle body from
After opening heated base, then need using the reference power supply in kettle body to be temperature sensor power supply, and pass through the control in kettle body
The voltage value of temperature sampling point on device temperature collection sensor processed is sent to heated base after conversing kettle body temperature, with logical
The display screen crossed on heated base is shown.
This dual system shares the temperature measurement method of a temperature sensor, the reference power supply in two autonomous systems
When there is inconsistent situation due to certain factors, the inconsistent problem of two systems measured temperature can be caused.For example, for
Mutually synthermal kettle body, the displays temperature when kettle body is placed on heated base can leave display when heated base with kettle body
Temperature is different, easily causes the confusion in consumer's use.For other kinds of dual system product, temperature measures inconsistent ask
Topic it is also possible to cause control on inaccuracy, then influence product work reliability.
Summary of the invention
The purpose of this utility model is to provide a kind of separated electronic products for sharing a temperature sensor thermometric, protect
For two independent systems of card no matter during combination or during separation, measured temperature is all the same.
In order to solve the above technical problems, the utility model is achieved using following technical scheme:
A kind of separated electronic product sharing a temperature sensor thermometric, including independent first device and the second dress
It sets；Wherein, reference power supply and the first controller are provided in the first device；It is provided in the second device controllable
Reference power supply, temperature sensor and second controller；The second device is during in conjunction with first device, the temperature sensing
Device is connected to the reference power supply, and exports detection signal and be sent to first controller；The second device is filled with first
During setting separation, the voltage value of the reference power supply is sent to the second controller by first controller, and described second
The output voltage that controller adjusts the controllable reference power supply is equal to the voltage value of the reference power supply；The temperature sensor connects
Lead to the controllable reference power supply, and exports detection signal and be transmitted to the second controller.
Further, it is also respectively provided with wireless communication module in the first device and second device, described
During two devices are separated with first device, the second controller generates temperature according to the detection signal that the temperature sensor exports
Measured value is spent, first controller is sent to by the wireless communication module.
Preferably, the wireless communication module is bluetooth module.
In order to realize the display output of temperature measurement result, it is additionally provided with display screen on the first device, connects institute
State the first controller；During the second device is in conjunction with first device, first controller is according to the temperature sensing
The detection signal of device output generates measured temperature, is transmitted to the display screen and is shown；In the second device and first
During device separates, the measured temperature received by the wireless communication module is sent to described by first controller
Display screen is shown.
In order to provide accurate reference voltage to controllable reference power supply, the output end of the reference power supply is connected to described
First controller designs first controller and detects the benchmark electricity during the second device is separated with first device
The output voltage in source generates the voltage value of the reference power supply, is sent to second control by the wireless communication module
Device.It is sent to second controller as the reference voltage by detecting the actual output voltage of reference power supply, and by this, carries out controllable
The adjusting of reference power supply, it is possible thereby to solve reference power supply during first device use because certain factors lead to its output voltage
When changing, the problem of the reference voltage inaccuracy provided to second controller then may further ensure that temperature measures
As a result consistency.
Preferably, the input terminal of the controllable reference power supply connects DC power supply, is controllable base using the DC power supply
Quasi- power supply power supply；The controllable reference power supply connects the second controller by bus, receives the tune of second controller output
Section instruction.In order to improve the accuracy of controllable reference power supply output voltage, the utility model designs the second controller and passes through
Analog-to-digital conversion interface connects the output end of the controllable reference power supply, acquires the output voltage of the controllable reference power supply.It is described
Second controller generates regulating command in the voltage value according to the reference power supply received and is transmitted to the controllable reference power supply
Afterwards, the output voltage of the controllable reference power supply is acquired, if the output voltage of the controllable reference power supply and the reference power supply
Voltage value it is inconsistent, then can continue to adjust controllable reference power supply, until the output voltage stabilization of the controllable reference power supply
On the voltage value of the reference power supply.
Preferably, battery and voltage regulator circuit are additionally provided in the second device, the voltage regulator circuit is to cell voltage
After carrying out DC converting, the DC power supply is generated, the input terminal of the controllable reference power supply is transmitted to, is the controllable benchmark
Power supply power supply.
Further, it is additionally provided with connector on the first device and second device, for first device and the
The connection of two devices；First controller and second controller determine first device according to the connection status of the connector
With the combination and discrete state of second device；Benchmark during the second device is in conjunction with first device, in first device
Power supply is connected to the temperature sensor in second device by the connector, powers for the temperature sensor；Described second
It is additionally provided with controllable switch in device, is connected between the controllable reference power supply and the temperature sensor；Second control
Device processed controls the controllable switch and cuts off the controllable reference power supply when detecting that the first device is in conjunction with second device
With the connection of the temperature sensor；The second controller is when detecting that the first device is separated with second device, control
It makes the controllable switch and is connected to the controllable reference power supply and the temperature sensor, be temperature using the controllable reference power supply
Sensor power supply.
Preferably, the controllable switch preferably uses a NMOS tube, and the grid of the NMOS tube is connected to described
The drain electrode of the NMOS tube is connected to the controllable reference power supply, the source electrode of the NMOS tube is connected to institute by two controllers
State temperature sensor.
Preferably, concatenated thermistor and current-limiting resistance, the thermistor are provided in the temperature sensor
It is connect respectively with the connector and second controller with the divider node of current-limiting resistance；First controller is described first
When device is in conjunction with second device, the divider node is connected to by the connector, receives the temperature sensor output
Detect signal；It is defeated to receive the divider node during first device is separated with second device for the second controller
Detection signal out.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the utility model, which is directed to, shares a temperature
The dual system for spending sensor makes two independent systems in separation using reference power supply following principle, one of system
Reference power supply can automatically track the reference power supply of another system, be thus same using the reference power supply in not homologous ray
When one temperature sensor power supply, still ensures that the consistency of temperature measurement result, then significantly improve the standard of temperature detection
True property.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model
It will become clearer.
Detailed description of the invention
Fig. 1 is a kind of reality for the separated electronic product for sharing a temperature sensor thermometric that the utility model is proposed
Apply the schematic block circuit diagram of example；
Fig. 2 is a kind of physical circuit schematic diagram of embodiment of the second device in Fig. 1.
Specific embodiment
Specific embodiment of the present utility model is described in more detail with reference to the accompanying drawing.
The present embodiment is directed to the double autonomous systems for sharing a temperature sensor, proposes a kind of accurate thermometry.It should
Technology uses reference power supply following principle, and reference power supply is arranged in the first system, and controllable benchmark electricity is arranged in second system
Source and temperature sensor, and second system is designed during in conjunction with the first system, it is using the reference power supply in the first system
The temperature sensor power supply；And during second system is separated with the first system, the first system is designed by its reference power supply
Voltage value is sent to second system, and second system is allow to adjust the output electricity of controllable reference power supply according to the voltage value received
Pressure is equal to the voltage value of the reference power supply, thus when being that temperature sensor is powered using controllable reference power supply, can make
The supply voltage that temperature sensor receives is consistent, to solve reference power supply in two autonomous systems due to certain
Factor and when there is inconsistent situation, the inconsistent problem of caused two systems measured temperature improves dual system temperature
The accuracy of measurement.
To realize that above-mentioned control strategy, the present embodiment combination separated electronic product propose a kind of preferred dual system
Circuit design, as shown in Figure 1.The separated electronic product of the present embodiment includes two independent devices, respectively first device
And second device.The first system is set in first device, second system is set in second device.The first device includes
The chief components such as reference power supply, the first controller CPU1, display screen；The second device includes controllable reference power supply,
The chief components such as two controller CPU2, temperature sensor.Being respectively set on first device and second device can the company of matching
When in conjunction with first device and second device are by the connector, the temperature sensing in second device is arranged in the connector connect
Device is connected to by the connector with the reference power supply in first device, is the temperature using the reference power supply in first device
Sensor power supply, and utilize the detection signal ADC- of the first controller CPU1 temperature collection sensor output in first device
W1, and then measured temperature is calculated, output to display screen carries out display output.And when second device separates the phase with first device
Between, the controllable reference power supply in the temperature sensor connection second device in second device is set, and is arranged in first device
The voltage value VOUT1 of reference power supply is sent to second controller CPU2 by the first controller CPU1, passes through second controller CPU2
The output voltage for adjusting controllable reference power supply is equal to the voltage value VOUT1 of the reference power supply, is achieved in controllable reference power supply
Tracking to reference power supply.It then, is temperature sensor power supply using the controllable reference power supply in second device, and will be warm
The detection signal ADC-2 of degree sensor output is sent to second controller CPU2, calculates temperature by second controller CPU2 and surveys
After magnitude, the first controller CPU1 being back in first device, and then display screen output is controlled by the first controller CPU1
Display.
Since during the combination of first device and second device and separating, the supply voltage that temperature sensor receives is protected
Hold consistency that is consistent, therefore can guarantee temperature detection result.
In the present embodiment, connection status detection circuit can be set in the connectors, generate status signal and be sent to the
One controller CPU1 and second controller CPU2.The first controller CPU1 and second controller CPU2 are according to the shape received
State signal is realized to the combination of first device and second device and the automatic identification of discrete state.
Stop powering to temperature sensor during first device is in conjunction with second device to control controllable reference power supply,
And during first device is separated with second device, it is automatically temperature sensor power supply, the present embodiment is in second dress
It is additionally provided with controllable switch in setting, is connected between the controllable reference power supply and temperature sensor.As second controller CPU2
When detecting that first device is in conjunction with second device, control controllable switch is disconnected, and cuts off controllable reference power supply and temperature sensor
Between connection line, the power supply for the reference power supply for receiving temperature sensor only in first device.And when the second control
When device CPU2 detects that first device is separated with second device, control controllable switch closure is connected to controllable reference power supply and temperature
Connection line between sensor, by the power switching of temperature sensor to controllable reference power supply.
A kind of preferred circuit as the present embodiment designs, and the controllable switch can select a NMOS tube Q1 system
System circuit design, as shown in Figure 2.The grid of NMOS tube Q1 is connected to wherein all the way GPIO mouthfuls of second controller CPU2, is connect
Receive the switch control signal CTL-2 of second controller CPU2 output.The drain electrode of NMOS tube Q1 is connected to controllable reference power supply IC-
The source electrode of 1 output end vo ut, NMOS tube Q1 connect the temperature sensor.When second controller CPU2 detects first device
When in conjunction with second device, the switch control signal CTL-2 of output low level state, control NMOS tube Q1 cut-off, cutting is controllably
Connection line between reference power supply and temperature sensor.When second controller CPU2 detects first device and second device point
From when, export the switch control signal CTL-2 of high level state, control NMOS tube Q1 saturation conduction, be connected to controllable reference power supply
Connection line between temperature sensor.
In the present embodiment, the temperature sensor is connected in series using thermistor RT-1 and current-limiting resistance R3, is connected
In the source electrode of NMOS tube Q1 and systematically between GND.Using the divider node of thermistor RT-1 and current-limiting resistance R3 as temperature
The terminal of sensor output detection signal, respectively with the wherein analog-to-digital conversion interface all the way of connector and second controller CPU2
ADC-3 is correspondingly connected with.When the temperature of second device changes, the resistance value of thermistor RT-1 changes therewith, leads to temperature-sensitive
The partial pressure value at divider node between resistance RT-1 and current-limiting resistance R3 changes, that is, the detection of temperature sensor output
Signal changes.During first device is in conjunction with second device, the first controller CPU1 is connected by its analog-to-digital conversion interface
The connector is connect, receives the partial pressure value, and then measured temperature, control display screen output are conversed according to the partial pressure value
Display.During first device is separated with second device, second controller CPU2 opens its analog-to-digital conversion interface ADC-3 acquisition institute
Partial pressure value is stated, and measured temperature is conversed according to the partial pressure value, the first controller CPU1 is back to, even if making first device
After separating with second device, the temperature change of second device also can be accurately shown.
Setting second controller CPU2 passes through I2C bus connects communication interface SDA, SCL of controllable reference power supply, controllable base
The other modulus all the way of the input terminal Vin connection DC power supply VCC of quasi- power supply, output end vo ut connection second controller CPU2 turn
Alias ADC-2.When second controller CPU2 detects that second device is separated with first device, receives first device and be transmitted across
The reference voltage come, the reference voltage is the voltage value VOUT1 of reference power supply.Second controller CPU2 is according to receiving
Voltage value VOUT1 generates regulating command CTL-1, passes through I2C bus be sent to controllable reference power supply IC-1 communication interface SDA,
SCL controls voltage that controllable reference power supply IC-1 adjusts its output end vo ut to the voltage value VOUT1, realizes controllable benchmark
Tracking of the power supply IC-1 to reference power supply.
In view of the actual output voltage of some controllable reference power supply IC-1 often exists partially with the regulating command received
The problem of difference, the present embodiment acquire controllable reference power supply IC- preferably by the analog-to-digital conversion interface ADC-2 of second controller CPU2
The voltage value VOUT2 of 1 reality output by comparing it with voltage value VOUT1 is received, and then generates fine tuning instruction and passes
Communication interface SDA, SCL of controllable reference power supply IC-1 is transported to, thus the controllable reference power supply IC-1 can be finely adjusted,
Enable the output voltage all-the-time stable of controllable reference power supply IC-1 on the voltage value VOUT1 of reference power supply, reach accurately with
The purpose of track.
For the voltage value VOUT1 of reference power supply, the present embodiment is preferably determined by the way of actual measurement.That is,
Using the first controller CPU1 wherein analog-to-digital conversion interface ADC-1 is connected to the output end of reference power supply all the way, acquire benchmark
The voltage value of power supply reality output is sent to second device as VOUT1 when first device is separated with second device,
It is possible thereby to when solving reference power supply and causing its output voltage to change because of certain factors during first device use, to
The problem for the reference voltage inaccuracy that two devices provide, then may further ensure that the consistency of temperature measurement result.
For DC power supply VCC needed for controllable reference power supply IC-1 work, can be provided using various ways.For example,
Battery and voltage regulator circuit can be set in second device, the voltage regulator circuit is connected to battery, cell voltage is carried out straight
After flowing conversion process, the DC power supply VCC is generated, is exported to the input terminal Vin of controllable reference power supply IC-1, is described controllable
Reference power supply IC-1 power supply.Connect the I of communication interface SDA, SCL of the controllable reference power supply IC-12C bus can pass through
Pull-up resistor R1, R2 are connected to the DC power supply VCC, to improve the reliability of bus signal transmission.
The present embodiment is also respectively provided with wireless communication module, such as bluetooth mould in the first device and second device
Block etc. is separately connected the first controller CPU1 and second controller CPU2, as shown in Figure 1.When the first device and
After two devices separation, the voltage value VOUT1 of reference power supply is wirelessly transmitted to second by bluetooth module by the first controller CPU1
Device carries out the tracking of reference power supply；Meanwhile second controller CPU2 returns collected measured temperature by bluetooth module
It is transmitted to first device, realizes the display output of temperature measurement result.
Using the reference power supply tracking technique of the present embodiment, the output voltage of controllable reference power supply can be made accurately to trace into
Within 0.51mV, and then the control of the deviation of temperature measurement result is improved into the consistency of dual system thermometric within 0.1 DEG C.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (10)
1. a kind of separated electronic product for sharing a temperature sensor thermometric, including independent first device and the second dress
It sets, which is characterized in that
Reference power supply and the first controller are provided in the first device；
Controllable reference power supply, temperature sensor and second controller are provided in the second device；
For the second device during in conjunction with first device, the temperature sensor is connected to the reference power supply, and exports inspection
It surveys signal and is sent to first controller；
For the second device during separating with first device, first controller sends the voltage value of the reference power supply
To the second controller, the output voltage that the second controller adjusts the controllable reference power supply is equal to the reference power supply
Voltage value；The temperature sensor is connected to the controllable reference power supply, and exports detection signal and be transmitted to second control
Device.
2. the separated electronic product according to claim 1 for sharing a temperature sensor thermometric, which is characterized in that
It is also respectively provided with wireless communication module in the first device and second device, is separated in the second device with first device
Period, the second controller generate measured temperature according to the detection signal that the temperature sensor exports, pass through the nothing
Line communication module is sent to first controller.
3. the separated electronic product according to claim 2 for sharing a temperature sensor thermometric, which is characterized in that institute
Stating wireless communication module is bluetooth module.
4. the separated electronic product according to claim 2 for sharing a temperature sensor thermometric, which is characterized in that
It is additionally provided with display screen on the first device, connects first controller；
During the second device is in conjunction with first device, inspection that first controller is exported according to the temperature sensor
It surveys signal and generates measured temperature, be transmitted to the display screen and shown；
During the second device is separated with first device, first controller will be received by the wireless communication module
To measured temperature be sent to the display screen and shown.
5. the separated electronic product according to claim 2 for sharing a temperature sensor thermometric, which is characterized in that institute
The output end that the first controller connects the reference power supply is stated, during the second device is separated with first device, detects institute
The output voltage for stating reference power supply generates the voltage value of the reference power supply, is sent to by the wireless communication module described
Second controller.
6. the separated electronic product according to claim 1 for sharing a temperature sensor thermometric, which is characterized in that institute
The input terminal connection DC power supply for stating controllable reference power supply, is the power supply of controllable reference power supply using the DC power supply；It is described can
Control reference power supply connects the second controller by bus, receives the regulating command of second controller output；Second control
Device processed connects the output end of the controllable reference power supply by analog-to-digital conversion interface, acquires the output electricity of the controllable reference power supply
Pressure.
7. the separated electronic product according to claim 6 for sharing a temperature sensor thermometric, which is characterized in that
Battery and voltage regulator circuit are additionally provided in the second device, it is raw after the voltage regulator circuit carries out DC converting to cell voltage
At the DC power supply, it is transmitted to the input terminal of the controllable reference power supply.
8. the separated electronic product according to any one of claim 1 to 7 for sharing a temperature sensor thermometric,
It is characterized in that,
It is additionally provided with connector on the first device and second device, the connection for first device and second device；Institute
The first controller and second controller are stated according to the connection status of the connector, determines the combination of first device and second device
And discrete state；
During the second device is in conjunction with first device, reference power supply in first device passes through connector connection the
Temperature sensor in two devices is powered for the temperature sensor；
Be additionally provided with controllable switch in the second device, be connected to the controllable reference power supply and the temperature sensor it
Between；The second controller controls controllable switch cutting institute when detecting that the first device is in conjunction with second device
State the connection of controllable reference power supply Yu the temperature sensor；The second controller is detecting the first device and second
It when device separates, controls the controllable switch and is connected to the controllable reference power supply and the temperature sensor, using described controllable
Reference power supply is temperature sensor power supply.
9. the separated electronic product according to claim 8 for sharing a temperature sensor thermometric, which is characterized in that institute
Stating controllable switch is NMOS tube, and the grid of the NMOS tube connects the second controller, and the drain electrode of the NMOS tube connects institute
Controllable reference power supply is stated, the source electrode of the NMOS tube connects the temperature sensor.
10. the separated electronic product according to claim 8 for sharing a temperature sensor thermometric, which is characterized in that
Concatenated thermistor and current-limiting resistance, the partial pressure of the thermistor and current-limiting resistance are provided in the temperature sensor
Node is connect with the connector and second controller respectively；First controller is in the first device and second device knot
When conjunction, the divider node is connected to by the connector, receives the detection signal of the temperature sensor output；Described second
Controller receives the detection signal of the divider node output during first device is separated with second device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201822158492.3U CN209085796U (en) | 2018-12-21 | 2018-12-21 | A kind of separated electronic product sharing a temperature sensor thermometric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822158492.3U CN209085796U (en) | 2018-12-21 | 2018-12-21 | A kind of separated electronic product sharing a temperature sensor thermometric |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405994A (en) * | 2018-12-21 | 2019-03-01 | 歌尔科技有限公司 | Dual system shares the accurate temp measuring method and split type product of a temperature sensor |
| CN113852148A (en) * | 2021-08-26 | 2021-12-28 | 江苏东成工具科技有限公司 | Method for detecting charging voltage of battery pack |
-
2018
- 2018-12-21 CN CN201822158492.3U patent/CN209085796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405994A (en) * | 2018-12-21 | 2019-03-01 | 歌尔科技有限公司 | Dual system shares the accurate temp measuring method and split type product of a temperature sensor |
| CN109405994B (en) * | 2018-12-21 | 2024-04-02 | 歌尔科技有限公司 | Accurate temperature measurement method for sharing one temperature sensor by double systems and split product |
| CN113852148A (en) * | 2021-08-26 | 2021-12-28 | 江苏东成工具科技有限公司 | Method for detecting charging voltage of battery pack |
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