CN205664953U - Wireless temperature measuring device and cooking device - Google Patents
Wireless temperature measuring device and cooking device Download PDFInfo
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- CN205664953U CN205664953U CN201620480529.2U CN201620480529U CN205664953U CN 205664953 U CN205664953 U CN 205664953U CN 201620480529 U CN201620480529 U CN 201620480529U CN 205664953 U CN205664953 U CN 205664953U
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Abstract
The utility model provides a wireless temperature measuring device and cooking device, wherein, wireless temperature measuring device includes: at least one temperature sampling module, temperature sampling module includes: bridge circuit is provided with the thermometal probe, and the temperature value linear change is followed along with temperature value linear change, bridge circuit's output voltage to the resistance of thermometal probe, microprocessor is connected to whole temperature sampling module for convert output voltage into digital temperature signal, wireless sending module is connected to microprocessor for it erupts simultaneously and delivers to contralateral wireless receiving module to acquire temperature signal. Through the technical scheme of the utility model, realized in the real -time collection of cooking device during operation to the pan temperature, can improve temperature measurement's promptness and accuracy effectively to can reduce the probability of occurence of failures such as dry combustion method, the use that has promoted the user is experienced.
Description
Technical field
This utility model relates to living electric apparatus technical field, more specifically, relates to a kind of wireless temperature measuring device and one
Cooking appliance.
Background technology
In the related, critesistor is installed under electromagnetic oven microcrystal face plate as temperature sensor and temperature-sensitive is electric
Resistance is connected in governor circuit, fetches measurement electromagnetic oven and work between the governor circuit change by detection critesistor output voltage
Time pan temperature, but owing to temperature sensor can not directly contact pan, therefore temperature survey has serious delayed
Property, and temperature survey accuracy is poor.
Therefore, how to design a kind of wireless temperature measuring device, become with accuracy improving the thermometric real-time of pan
For current problem demanding prompt solution.
Utility model content
This utility model is intended at least to solve one of technical problem present in prior art or correlation technique.
To this end, a purpose of the present utility model is to propose a kind of wireless temperature measuring device.
Another purpose of the present utility model is to propose a kind of cooking appliance.
In order to solve at least one above-mentioned technical problem, the embodiment of first aspect of the present utility model provides a kind of nothing
Line temperature measuring equipment, including: at least one temperature sampling module, temperature sampling module includes: bridge circuit, is provided with thermometal
Probe, the resistance of thermometal probe is with temperature value linear change, and the output voltage of bridge circuit is with temperature value linear change；Micro-
Processor, is connected to whole temperature sampling module, for output voltage is converted to digitized temperature signal；Wireless transmission mould
Block, is connected to microprocessor, for obtaining temperature signal and sending the wireless receiving module to offside.
According to the wireless temperature measuring device of embodiment of the present utility model, by thermometal probe is arranged at bridge circuit
In, determine temperature signal with the output voltage of bridge circuit, and through the analog-to-digital conversion module of microprocessor, temperature signal is entered
Digitized processes.
In order to improve the accuracy of thermometric further, multiple temperature sampling module and the weighted value of correspondence are set, enter
And the measurement result combining multiple temperature sampling module tries to achieve temperature signal the most accurately.
Wherein, thermometal probe can be platinum probe, copper metal probe and nickel metal probe etc., ideal situation
Under, the platinum probe resistance when 0 DEG C is 100 Ω, and the temperature-resistance relation of platinum probe is, and linear positive is correlated with.
It addition, the superstructure provided according to this utility model above-described embodiment also has a following additional technical feature:
According to an embodiment of the present utility model, bridge circuit includes: thermometal probe and the first resistance, and series connection is even
It is connected between direct-flow voltage regulation source and ground wire；Second resistance and the 3rd resistance, be connected in series between direct-flow voltage regulation source and ground wire, its
In, the common port of thermometal probe and the first resistance is made as the first common port, the common port of the second resistance and the 3rd resistance
Being the second common port, the first common port is connected to the first specified interface of microprocessor, and the second common port is connected to microprocessor
The second specified interface, the electric potential difference between the first common port and the second common port is output voltage, and thermometal probe exists
The resistance of assigned temperature is reference resistance, between ratio and the second resistance and the 3rd resistance between reference resistance and the first resistance
Ratio equal.
According to the wireless temperature measuring device of embodiment of the present utility model, by arranging bridge circuit, improve wireless temperature measurement
The accuracy of process, specifically, the change in resistance of thermometal probe can be converted to electromotive force and become by bridge circuit delicately
Change.
Wherein, one article of branch road of bridge circuit is in series with the second resistance and the 3rd resistance of fixed resistance value, as with platinum
Probe is when 0 DEG C, and the output voltage of bridge circuit is zero, then have following equation to set up:
Wherein, R1 characterizes the resistance of the first resistance, and R2 characterizes the resistance of the second resistance, and R3 characterizes the resistance of the 3rd resistance,
T0 characterizes the resistance that thermometal probe is at 0 DEG C.
According to an embodiment of the present utility model, the resistance of the first resistance, the second resistance and the 3rd resistance is the most equal.
According to the wireless temperature measuring device of embodiment of the present utility model, as a kind of preferred embodiment of bridge circuit,
When arranging 0 DEG C, T0=R1=R2=R3, namely when 0 DEG C, electric potential difference between the first common port and the second common port is zero.
According to an embodiment of the present utility model, temperature sampling module also includes: filter circuit, is connected in series in bridge-type
Between circuit and microprocessor, filter circuit includes the 4th resistance, the 5th resistance and filter capacitor, wherein, the 4th resistant series
Being connected between the first common port and the first specified interface, the 5th resistant series is connected to the second common port and the second specified interface
Between, filter capacitor is connected between outfan and the outfan of the 5th resistance of the 4th resistance.
According to the wireless temperature measuring device of embodiment of the present utility model, by filter circuit being arranged at temperature sampling module
And between microprocessor, specifically, effective filtered out the AC noise produced in test process by RC filter circuit and disturbed,
Improve the accuracy of temperature-measuring results.
According to an embodiment of the present utility model, also include: supply module, including be connected in series in direct-flow voltage regulation source and
IGCT, the 6th resistance and the 7th resistance between ground wire, wherein, the base stage of IGCT is connected to the 3rd appointment of microprocessor
Interface, the 3rd specified interface is to base stage output high level signal or low level signal, and the 4th specified interface is connected to IGCT
Colelctor electrode and the common port of the 6th resistance, the common port of the 6th resistance and the 7th resistance is connected to the 5th appointment of microprocessor and connects
Mouthful, for providing reference voltage value by the 5th specified interface to microprocessor.
According to the wireless temperature measuring device of embodiment of the present utility model, include, by arranging wireless temperature measuring device, mould of powering
Block, and it is connected to the specified interface of microprocessor, on the one hand, provide the running voltage of microprocessor, on the other hand, at IGCT
During conducting, provide reference voltage value by the common port of the 6th resistance and the 7th resistance, thus improve output voltage further
Accuracy.
According to an embodiment of the present utility model, wireless sending module includes that bluetooth sending module and/or Wi-Fi send
Module.
According to the wireless temperature measuring device of embodiment of the present utility model, send mould by bluetooth sending module and/or Wi-Fi
Digitized temperature signal is sent the processor to cooking appliance body by block, it is achieved that wireless temperature measuring device is with cooking appliance originally
Communication between body such that it is able to make the temperature information that cooking appliance ontology acquisition wireless temperature measuring device collects, with according to temperature
Degree information carries out power adjustments to cooking appliance.
The embodiment of second aspect of the present utility model provides a kind of cooking appliance, including: cooking appliance body；As above
Stating the wireless temperature measuring device of any one technical scheme, wireless temperature measure module can releasably be assembled in the inner side of cooking appliance body
Wall, temperature signal is sent to wireless receiving module by the wireless base station apparatus of wireless temperature measuring device by wireless channel；Wireless connect
Receive module, be arranged on cooking appliance body, for obtaining the temperature signal that wireless sending module sends, nothing by wireless channel
Line receiver module includes Bluetooth receptions module and/or Wi-Fi receiver module.
According to the cooking appliance of embodiment of the present utility model, temperature-sensitive thermoprobe is assembled in cooking appliance body
Sidewall, such as, be assembled in medial wall by buckle by the way of buckling.By the wireless receiving mould on the processor of cooking appliance
Block receives the temperature information that wireless sending module is sent by wireless channel, it is achieved that when cooking appliance works to pan temperature
Real-time Collection, can be effectively improved thermometric promptness and accuracy, and the accidents such as dry combustion method can be reduced occur
Probability, improve the experience of user.
Specifically, when using cooking appliance culinary art things, wireless temperature measuring device is assembled in the medial wall of pot, when cooking
When electrical equipment of preparing food is not in duty or is made without temperature survey, then wireless temperature measuring device can be pulled down.
It addition, processor is after receiving temperature signal, it is also possible to regulate output voluntarily according to temperature signal, and
Heating it is automatically stopped such that it is able to reduce the probability causing cooking appliance to damage due to dry combustion method when dry combustion method occurs.
Wherein, cooking appliance can be electromagnetic oven, electric cooker, electric pressure cooking saucepan, soy bean milk making machine, insulating pot etc..
According to an embodiment of the present utility model, including: Tip element, it is connected to processor, for by temperature signal
It is prompted to user.
According to the cooking appliance of embodiment of the present utility model, by Tip element, temperature information is prompted to user, energy
Enough make user according to temperature information, the mode of operation of cooking appliance be adjusted in time, improve the experience of user.
Such as, Tip element can be the prompting panel of cooking appliance outer surface, it is also possible to be the speaker of cooking appliance
Equipment.
According to an embodiment of the present utility model, also include: capacity prompt subelement, be connected to wireless receiving module,
For obtaining the information about power of wireless temperature measuring device, and information about power is prompted to user；Mode of operation prompting subelement, connects
To wireless receiving module, for obtaining the operating mode information of wireless temperature measuring device, and operating mode information is prompted to user.
According to the cooking appliance of embodiment of the present utility model, point out by arranging capacity prompt subelement and mode of operation
Subelement, can be supplied to user by the dump energy information of wireless temperature measuring device and operating mode information, make user understand nothing
The state of charge of line temperature measuring equipment and duty, thus improve intellectuality and the Humanization Level of Municipal of cooking appliance, meet
Different types of use demand, improves the experience of user.
According to an embodiment of the present utility model, cooking appliance body also includes: judging unit, is connected to wireless receiving
Module, is used for judging whether temperature signal is more than or equal to preset temperature signals, and is judging that temperature signal is more than or equal to
During preset temperature signals, control cooking appliance and quit work.
According to the cooking appliance of embodiment of the present utility model, connect by Bluetooth receptions module and/or Wi-Fi receiver module
Receive digitized temperature signal, it is achieved that the communication between wireless temperature measuring device and cooking appliance body such that it is able to make culinary art
The temperature information that electrical equipment ontology acquisition wireless temperature measuring device collects, to carry out power tune according to temperature information to cooking appliance
Joint.
Additional aspect of the present utility model and advantage will be given in following description part, and part will be from explained below
In become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining general the accompanying drawings below description to embodiment
Become obvious and easy to understand, wherein:
Fig. 1 is the circuit diagram of the wireless temperature measuring device according to embodiment of the present utility model；
Fig. 2 is the schematic diagram of the resistance v. temperature of the thermometal probe according to embodiment of the present utility model；
Fig. 3 is the schematic diagram of the cooking appliance according to an embodiment of the present utility model；
Fig. 4 is the schematic diagram of the cooking appliance according to another embodiment of the present utility model；
Fig. 5 is the schematic diagram of the wireless temperature measurement scheme according to embodiment of the present utility model.
Drawing reference numeral is described as follows shown in table 1:
Table 1
| Label | Title | Label | Title |
| VCC | Direct-flow voltage regulation source | R3 | 3rd resistance |
| GND | Ground wire | R4 | 4th resistance |
| R1 | First resistance | R5 | 5th resistance |
| T1 | Thermometal probe | R6 | 6th resistance |
| R2 | Second resistance | R7 | 7th resistance |
| Q1 | IGCT | C | Filter capacitor |
| C1 | First electric capacity | C2 | Second electric capacity |
| C3 | 3rd electric capacity | U1 | Microprocessor |
| Cont1 | Wireless sending module | E | The emitter stage of IGCT |
| B | The base stage of IGCT | C | The colelctor electrode of IGCT |
Detailed description of the invention
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
This utility model is further described in detail by body embodiment.It should be noted that in the case of not conflicting, this
Feature in the embodiment of application and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding this utility model, but, this practicality
Novel can implement to use other to be different from mode described here, therefore, protection domain of the present utility model is not subject to
The restriction of following public specific embodiment.
Fig. 1 is the circuit diagram of the wireless temperature measuring device according to embodiment of the present utility model
As it is shown in figure 1, according to the wireless temperature measuring device of embodiment of the present utility model, including: at least one temperature sampling
Module, temperature sampling module includes: bridge circuit, is provided with thermometal probe T1, and the resistance of thermometal probe T1 is with temperature
Angle value linear change, the output voltage of bridge circuit is with temperature value linear change；Microprocessor U1, is connected to whole temperature sampling
Module, for being converted to digitized temperature signal by output voltage；Wireless sending module Cont1, is connected to microprocessor U1,
For obtaining temperature signal and sending the wireless receiving module to offside.
According to the wireless temperature measuring device of embodiment of the present utility model, by thermometal probe T1 being arranged at bridge-type electricity
Lu Zhong, determines temperature signal with the output voltage of bridge circuit, and believes temperature through the analog-to-digital conversion module of microprocessor U1
Number it is digitized processing.
In order to improve the accuracy of thermometric further, multiple temperature sampling module and the weighted value of correspondence are set, enter
And the measurement result combining multiple temperature sampling module tries to achieve temperature signal the most accurately.
Wherein, thermometal probe T1 can be platinum probe, copper metal probe and nickel metal probe etc., ideal situation
Under, the platinum probe resistance when 0 DEG C is 100 Ω, and the temperature-resistance relation of platinum probe is, and linear positive is correlated with.
It addition, the superstructure provided according to this utility model above-described embodiment also has a following additional technical feature:
According to an embodiment of the present utility model, bridge circuit includes: thermometal probe T1 and the first resistance R1, string
Connection is connected between direct-flow voltage regulation source VCC and ground wire GND；Second resistance R2 and the 3rd resistance R3, is connected in series in DC voltage-stabilizing
Between source VCC and ground wire GND, wherein, the common port of thermometal probe T1 and the first resistance R1 as the first common port, second
The common port of resistance R2 and the 3rd resistance R3 is as the second common port, and the first common port is connected to first appointment of microprocessor U1
Interface, the second common port is connected to second specified interface of microprocessor U1, the electricity between the first common port and the second common port
Potential difference is output voltage, and thermometal probe T1 is reference resistance at the resistance of assigned temperature, reference resistance and the first resistance
The ratio between ratio and the second resistance R2 and the 3rd resistance R3 between R1 is equal.
According to the wireless temperature measuring device of embodiment of the present utility model, by arranging bridge circuit, improve wireless temperature measurement
The accuracy of process, specifically, the change in resistance of thermometal probe T1 can be converted to electromotive force by bridge circuit delicately
Change.
Wherein, one article of branch road of bridge circuit is in series with the second resistance R2 and the 3rd resistance R3 of fixed resistance value, as with platinum
Metal probe is when 0 DEG C, and the output voltage of bridge circuit is zero, then have following equation to set up:
Wherein, R1 characterizes the resistance of the first resistance R1, and R2 characterizes the resistance of the second resistance R2, and R3 characterizes the 3rd resistance R3's
Resistance, T0 characterizes the resistance that thermometal probe T1 is at 0 DEG C.
According to an embodiment of the present utility model, the first resistance R1, the second resistance R2 and the 3rd resistance R3 resistance equal
Equal.
According to the wireless temperature measuring device of embodiment of the present utility model, as a kind of preferred embodiment of bridge circuit,
When arranging 0 DEG C, T0=R1=R2=R3, namely when 0 DEG C, electric potential difference between the first common port and the second common port is zero.
Embodiment:
Fig. 2 is the schematic diagram of the resistance v. temperature of the thermometal probe T1 according to embodiment of the present utility model.
As in figure 2 it is shown, platinum probe is when 0 DEG C, resistance is 100 Ω, and within the temperature range of-50～200 DEG C,
The linear relation obtaining resistance and temperature according to experiment statistics is y=0.382x+99.99, and wherein, x characterizes platinum probe
Temperature, y characterize platinum probe resistance.
According to an embodiment of the present utility model, temperature sampling module also includes: filter circuit, is connected in series in bridge-type
Between circuit and microprocessor U1, filter circuit includes the 4th resistance R4, the 5th resistance R5 and filter capacitor C, wherein, the 4th electricity
Resistance R4 is connected in series between the first common port and the first specified interface, and the 5th resistance R5 is connected in series in the second common port and the
Between two specified interfaces, filter capacitor C is connected between outfan and the outfan of the 5th resistance R5 of the 4th resistance R4.
According to the wireless temperature measuring device of embodiment of the present utility model, by filter circuit being arranged at temperature sampling module
And between microprocessor U1, specifically, effective filtered out the AC noise produced in test process by RC filter circuit and done
Disturb, improve the accuracy of temperature-measuring results.
According to an embodiment of the present utility model, also include: supply module, including being connected in series in direct-flow voltage regulation source
IGCT Q1 (the positive-negative-positive IGCT shown in Fig. 1) between VCC and ground wire GND, the 6th resistance R6 and the 7th resistance R7, its
In, base stage B of IGCT Q1 (the positive-negative-positive IGCT shown in Fig. 1) is connected to the 3rd specified interface of microprocessor U1, and the 3rd
Specified interface is to base stage B output high level signal or low level signal, and the 4th specified interface is connected to IGCT Q1 (institute in Fig. 1
The positive-negative-positive IGCT shown) colelctor electrode C and the common port of the 6th resistance R6, the 6th resistance R6 and the common port of the 7th resistance R7
It is connected to the 5th specified interface of microprocessor U1, for providing reference voltage by the 5th specified interface to microprocessor U1
Value, the emitter E of IGCT Q1 (the positive-negative-positive IGCT shown in Fig. 1) is connected to direct-flow voltage regulation source VCC.
It addition, for the reliability improving supply module, as it is shown in figure 1, arrange in supply module the first electric capacity C1,
Supply module is filtered processing by two electric capacity C2 and the 3rd electric capacity C3.
According to the wireless temperature measuring device of embodiment of the present utility model, include, by arranging wireless temperature measuring device, mould of powering
Block, and it is connected to the specified interface of microprocessor U1, on the one hand, provide the running voltage of microprocessor U1, on the other hand, at crystalline substance
During brake tube Q1 (the positive-negative-positive IGCT shown in Fig. 1) conducting, provide base by the common port of the 6th resistance R6 and the 7th resistance R7
Quasi-magnitude of voltage, thus improve the accuracy of output voltage further.
According to an embodiment of the present utility model, wireless sending module Cont1 includes bluetooth sending module and/or Wi-
Fi sending module.
According to the wireless temperature measuring device of embodiment of the present utility model, send mould by bluetooth sending module and/or Wi-Fi
Digitized temperature signal is sent the processor to cooking appliance body by block, it is achieved that wireless temperature measuring device is with cooking appliance originally
Communication between body such that it is able to make the temperature information that cooking appliance ontology acquisition wireless temperature measuring device collects, with according to temperature
Degree information carries out power adjustments to cooking appliance.
Below in conjunction with Fig. 3 to Fig. 5, the wireless temperature measurement scheme according to embodiment of the present utility model is specifically described.
Embodiment one:
As it is shown on figure 3, by cooking appliance for illustrating as a example by a kind of electric cooker, the pot cover 302 of electric cooker is fastened on pot
Body 304, pot 304 is provided with radio receiver 306, and pot cover 302 is provided with processing module 308 and the temperature-sensitive of electrical connection
Metal probe 310, processing module 308 includes above-mentioned wireless temperature measuring device (beyond heat extraction sensitized metal probe 310), and, pass through
Digitized temperature signal is sent to radio receiver 306 by the wireless sending module in processing module 308.
Embodiment two:
As shown in Figure 4, by cooking appliance for illustrating as a example by another kind of electric cooker, the pot cover 402 of electric cooker is fastened on
Pot 404, pot cover 402 is provided with radio receiver 406, and pot 408 is provided with processing module 408 and the heat of electrical connection
Sensitized metal probe 410, processing module 408 includes above-mentioned wireless temperature measuring device (beyond heat extraction sensitized metal probe 410), and, logical
Digitized temperature signal is sent to radio receiver 406 by the wireless sending module crossed in processing module 408.
Embodiment three:
As it is shown in figure 5, include according to the cooking appliance of embodiment of the present utility model: cooking appliance body；Such as above-mentioned
The wireless temperature measuring device 502 of one technical scheme, wireless temperature measure module can releasably be assembled in the inner side of cooking appliance body
Wall, temperature signal is sent to wireless receiving module 506 by the wireless base station apparatus of wireless temperature measuring device 502 by wireless channel；
Wireless receiving module 506, is arranged on cooking appliance body, sends for obtaining wireless sending module 504 by wireless channel
Temperature signal, wireless receiving module 506 includes Bluetooth receptions module and/or Wi-Fi receiver module.
According to the cooking appliance of embodiment of the present utility model, temperature-sensitive thermoprobe is assembled in cooking appliance body
Sidewall, such as, be assembled in medial wall by buckle by the way of buckling.By the wireless receiving mould on the processor of cooking appliance
Block 506 receives the temperature information that wireless sending module 504 is sent by wireless channel, it is achieved that when cooking appliance works to pot
The Real-time Collection of tool temperature, can be effectively improved thermometric promptness and accuracy, and can reduce the things such as dry combustion method
Therefore the probability occurred, improve the experience of user.
Specifically, when using cooking appliance culinary art things, wireless temperature measuring device 502 is assembled in the medial wall of pot,
When cooking appliance is not in duty or is made without temperature survey, then wireless temperature measuring device 502 can be pulled down.
It addition, processor is after receiving temperature signal, it is also possible to regulate output voluntarily according to temperature signal, and
Heating it is automatically stopped such that it is able to reduce the probability causing cooking appliance to damage due to dry combustion method when dry combustion method occurs.
Wherein, cooking appliance can be electromagnetic oven, electric cooker, electric pressure cooking saucepan, soy bean milk making machine, insulating pot etc..
According to an embodiment of the present utility model, including: Tip element, it is connected to processor, for by temperature signal
It is prompted to user.
According to the cooking appliance of embodiment of the present utility model, by Tip element, temperature information is prompted to user, energy
Enough make user according to temperature information, the mode of operation of cooking appliance be adjusted in time, improve the experience of user.
Such as, Tip element can be the prompting panel of cooking appliance outer surface, it is also possible to be the speaker of cooking appliance
Equipment.
According to an embodiment of the present utility model, also include: capacity prompt subelement, be connected to wireless receiving module
506, for obtaining the information about power of wireless temperature measuring device 502, and information about power is prompted to user；Mode of operation prompting is single
Unit, is connected to wireless receiving module 506, for obtaining the operating mode information of wireless temperature measuring device 502, and mode of operation is believed
Breath is prompted to user.
According to the cooking appliance of embodiment of the present utility model, point out by arranging capacity prompt subelement and mode of operation
Subelement, can be supplied to user by the dump energy information of wireless temperature measuring device 502 and operating mode information, make user understand
The state of charge of wireless temperature measuring device 502 and duty, thus improve intellectuality and the Humanization Level of Municipal of cooking appliance, full
The different types of use demand of foot, improves the experience of user.
According to an embodiment of the present utility model, cooking appliance body also includes: judging unit, is connected to wireless receiving
Module 506, be used for judging temperature signal whether more than or equal to preset temperature signals, and judge temperature signal more than or etc.
When preset temperature signals, control cooking appliance and quit work.
According to the cooking appliance of embodiment of the present utility model, connect by Bluetooth receptions module and/or Wi-Fi receiver module
Receive digitized temperature signal, it is achieved that the communication between wireless temperature measuring device 502 and cooking appliance body such that it is able to make to cook
The temperature information that electrical equipment ontology acquisition wireless temperature measuring device 502 of preparing food collects, to carry out merit according to temperature information to cooking appliance
Rate regulates.
In the description of this specification, term " first ", " second " are only used for the purpose described, and it is not intended that indicate
Or hint relative importance；Term " connects ", " installation ", " fixing " etc. all should be interpreted broadly, and such as, " connection " can be solid
Fixed connection, it is also possible to be to removably connect, or be integrally connected；Can be to be joined directly together, it is also possible to indirect by intermediary
It is connected.For the ordinary skill in the art, can understand that above-mentioned term is in this utility model as the case may be
Concrete meaning.
In the description of this specification, the description of term " embodiment " etc. means to combine this embodiment or example describes
Specific features, structure, material or feature be contained at least one embodiment of the present utility model or example.In this specification
In, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description,
Structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
These are only preferred embodiment of the present utility model, be not limited to this utility model, for this area
Technical staff for, this utility model can have various modifications and variations.It is all within spirit of the present utility model and principle,
Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. a wireless temperature measuring device, it is characterised in that including:
At least one temperature sampling module, described temperature sampling module includes:
Bridge circuit, is provided with thermometal probe, and the resistance of described thermometal probe is with temperature value linear change, described bridge
The output voltage of formula circuit is with described temperature value linear change；
Microprocessor, is connected to whole described temperature sampling module, for described output voltage is converted to digitized temperature
Signal；
Wireless sending module, is connected to described microprocessor, connects for obtaining described temperature signal sending to the wireless of offside
Receive module.
Wireless temperature measuring device the most according to claim 1, it is characterised in that described bridge circuit includes:
Described thermometal probe and the first resistance, be connected in series between direct-flow voltage regulation source and ground wire；
Second resistance and the 3rd resistance, be connected in series between described direct-flow voltage regulation source and described ground wire,
Wherein, the common port of described thermometal probe and described first resistance as the first common port, described second resistance and
The common port of described 3rd resistance is as the second common port, and described first common port is connected to the first appointment of described microprocessor
Interface, described second common port is connected to the second specified interface of described microprocessor, described first common port and described second
Electric potential difference between common port is described output voltage, and described thermometal probe is with reference to electricity at the resistance of assigned temperature
Resistance, the ratio between ratio and described second resistance and described 3rd resistance between described reference resistance and described first resistance
Equal.
Wireless temperature measuring device the most according to claim 2, it is characterised in that described first resistance, the second resistance and the 3rd
The resistance of resistance is the most equal.
Wireless temperature measuring device the most according to claim 2, it is characterised in that described temperature sampling module also includes:
Filter circuit, is connected in series between described bridge circuit and described microprocessor, and described filter circuit includes the 4th electricity
Resistance, the 5th resistance and filter capacitor,
Wherein, described 4th resistant series is connected between described first common port and described first specified interface, and the described 5th
Resistant series is connected between described second common port and described second specified interface, and described filter capacitor is connected to the described 4th
Between outfan and the outfan of described 5th resistance of resistance.
Wireless temperature measuring device the most according to any one of claim 1 to 4, it is characterised in that also include:
Supply module, including the IGCT being connected in series between direct-flow voltage regulation source and ground wire, the 6th resistance and the 7th resistance,
Wherein, the base stage of described IGCT is connected to the 3rd specified interface of described microprocessor, described 3rd specified interface to
Described base stage output high level signal or low level signal, the 4th specified interface of described microprocessor is connected to described IGCT
Colelctor electrode and the common port of described 6th resistance, the common port of described 6th resistance and described 7th resistance is connected to described micro-
5th specified interface of processor, for providing reference voltage value by described 5th specified interface to described microprocessor.
Wireless temperature measuring device the most according to any one of claim 1 to 4, it is characterised in that described wireless sending module
Including bluetooth sending module and/or Wi-Fi sending module.
7. a cooking appliance, it is characterised in that including:
Cooking appliance body；
Wireless temperature measuring device as according to any one of claim 1 to 6, described wireless temperature measure module can releasably be assembled in
The medial wall of described cooking appliance body, the wireless base station apparatus of described wireless temperature measuring device passes through wireless channel by temperature signal
Send to wireless receiving module；
Described wireless receiving module, is arranged on described cooking appliance body, for obtaining described nothing by described wireless channel
The temperature signal that line sending module sends,
Described wireless receiving module includes Bluetooth receptions module and/or Wi-Fi receiver module.
Cooking appliance the most according to claim 7, it is characterised in that including:
Tip element, is connected to described processor, for described temperature signal is prompted to user.
Cooking appliance the most according to claim 7, it is characterised in that also include:
Capacity prompt subelement, is connected to described wireless receiving module, for obtaining the information about power of described wireless temperature measuring device,
And described information about power is prompted to user；
Mode of operation prompting subelement, is connected to described wireless receiving module, for obtaining the work of described wireless temperature measuring device
Pattern information, and described operating mode information is prompted to user.
10. according to the cooking appliance according to any one of claim 7 to 9, it is characterised in that described cooking appliance body also wraps
Include:
Judging unit, is connected to described wireless receiving module, is used for judging that whether described temperature signal is more than or equal to presetting temperature
Degree signal, and when judging described temperature signal more than or equal to described preset temperature signals, control described cooking appliance and stop
Only work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620480529.2U CN205664953U (en) | 2016-05-23 | 2016-05-23 | Wireless temperature measuring device and cooking device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211429A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method, apparatus and cooking appliance |
| CN110115492A (en) * | 2018-02-05 | 2019-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control method and computer readable storage medium |
| CN114554471A (en) * | 2022-02-25 | 2022-05-27 | 广东美的厨房电器制造有限公司 | Wireless probe positioning method and device, cooking appliance and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211429A (en) * | 2017-07-03 | 2019-01-15 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method, apparatus and cooking appliance |
| CN109211429B (en) * | 2017-07-03 | 2020-12-22 | 佛山市顺德区美的电热电器制造有限公司 | Temperature sampling method and device and cooking appliance |
| CN110115492A (en) * | 2018-02-05 | 2019-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control method and computer readable storage medium |
| CN114554471A (en) * | 2022-02-25 | 2022-05-27 | 广东美的厨房电器制造有限公司 | Wireless probe positioning method and device, cooking appliance and storage medium |
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