CN111103068A - Temperature detector and temperature detection system - Google Patents
Temperature detector and temperature detection system Download PDFInfo
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- CN111103068A CN111103068A CN201811258003.XA CN201811258003A CN111103068A CN 111103068 A CN111103068 A CN 111103068A CN 201811258003 A CN201811258003 A CN 201811258003A CN 111103068 A CN111103068 A CN 111103068A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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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
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2207/00—Application of thermometers in household appliances
- G01K2207/02—Application of thermometers in household appliances for measuring food temperature
- G01K2207/06—Application of thermometers in household appliances for measuring food temperature for preparation purposes
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a temperature detector and a temperature detection system, which are suitable for detecting the temperature of an object to be heated in heating equipment. The temperature probe includes: a temperature sensor adapted to detect a temperature of the heated object; the control processing circuit is connected with the temperature sensor and is suitable for processing the temperature signal detected by the temperature sensor; the wireless signal transmitting unit is suitable for wirelessly transmitting the processed temperature information to the outside in a radio frequency mode; and the radio frequency energy acquisition unit is suitable for receiving radio frequency energy and converting the received radio frequency energy into direct current electric energy so as to supply power to the control processing circuit and the temperature sensor. In the invention, the temperature detector adopts the special wireless signal transmitting unit to transmit the temperature signal outwards in a wireless mode, and adopts the special radio frequency energy collecting unit to receive the radio frequency energy in a wireless mode, so that the connection of cables is not needed, and the use convenience and the safety of the temperature detector are improved.
Description
Technical Field
The present invention relates to a temperature detector and a temperature detection system, and more particularly, to a temperature detector adapted to detect a temperature of an object heated in a heating apparatus and a temperature detection system including the same.
Background
When an object is baked (generally, meat), in order to make the object taste better, a temperature detector is usually inserted into the object, so as to directly sense the temperature inside the object and transmit the temperature value to the temperature intelligent control device of the oven, thereby adjusting the power of the oven, so as to adjust the baking temperature of the oven, and make the object achieve the expected baking effect. Since the temperature in the oven is usually very high, typically up to 300 degrees celsius, typical electronic components are temperature sensitive devices and can only operate at 85 degrees celsius or below 125 degrees celsius.
In the prior art, in order to avoid that the electronic components on the circuit board of the temperature detector are affected by the high temperature in the oven, the circuit board is usually arranged in the plug part of the temperature detector, and can be inserted into the object together with the plug part. However, this increases the size of the plug part of the temperature probe, so that the plug part of the temperature probe is not easily inserted into the food, and seriously affects the grilling effect of the food because the large size of the plug part generates a large insertion hole when inserted into the food.
In addition, in the prior art, the temperature detector is generally connected to a temperature intelligent control device located outside the oven through a cable so as to transmit temperature information detected by the temperature detector to the temperature intelligent control device. Meanwhile, the temperature probe is also connected to a power source located outside the oven through a cable so as to supply power to the temperature probe. The use of a cable connection can present problems, for example, the cable itself can affect the accuracy of the temperature readings of the temperature probe. In addition, the cables are susceptible to contamination, which can present a safety hazard to the objects.
Disclosure of Invention
An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.
According to one aspect of the present invention, there is provided a temperature detector adapted to detect the temperature of an object being heated in a heating apparatus. The temperature probe includes: a temperature sensor adapted to detect a temperature of the heated object; the control processing circuit is connected with the temperature sensor and is suitable for processing the temperature signal detected by the temperature sensor; the wireless signal transmitting unit is suitable for wirelessly transmitting the processed temperature information to the outside in a radio frequency mode; and the radio frequency energy acquisition unit is suitable for receiving radio frequency energy and converting the received radio frequency energy into direct current electric energy so as to supply power to the control processing circuit and the temperature sensor.
According to an exemplary embodiment of the present invention, the wireless signal transmitting unit includes a wireless signal antenna adapted to transmit a radio frequency signal to the outside; the rf energy harvesting unit includes an rf energy receiving antenna adapted to receive rf energy.
According to another exemplary embodiment of the present invention, an operating frequency of the wireless signal antenna is different from an operating frequency of the radio frequency energy receiving antenna.
According to another exemplary embodiment of the present invention, the operating frequency of the wireless signal antenna is 2.4GHz in the ISM band, and the operating frequency of the radio frequency energy receiving antenna is 868MHz or 915MHz, 433MHz or 2.4GHz in the ISM band.
According to another exemplary embodiment of the present invention, the wireless signal transmitting unit further includes: the signal transmitting device is electrically connected with the control processing circuit and is suitable for generating a wireless radio frequency signal containing the processed temperature information, and the wireless signal antenna is connected to the signal transmitting device and is suitable for transmitting the radio frequency signal outwards.
According to another exemplary embodiment of the invention, the signaling device employs a bluetooth low energy, BLE, communication protocol or a bluetooth 5.0 protocol.
According to another exemplary embodiment of the invention, the radio frequency energy harvesting unit further comprises: an energy receiving device electrically connected with the radio frequency energy receiving antenna and adapted to receive radio frequency energy from the radio frequency energy receiving antenna; the energy conversion device is suitable for converting the radio frequency energy received by the energy receiving device into direct current electric energy; an electric energy storage device adapted to store the dc electric energy output from the energy conversion device; and a power supply device adapted to supply the direct-current electric energy stored in the electric energy storage device to the control processing circuit and the temperature sensor.
According to another exemplary embodiment of the present invention, the wireless signal transmitting unit and the radio frequency energy harvesting unit comprise a common antenna; the control processing circuit is suitable for controlling the common antenna to switch between a signal transmitting mode for transmitting the radio-frequency signal and an energy receiving mode for receiving the radio-frequency energy according to a preset program.
According to another exemplary embodiment of the present invention, an operating frequency of the common antenna in the signal transmission mode is the same as an operating frequency of the common antenna in the energy reception mode.
According to another exemplary embodiment of the present invention, an operating frequency of the common antenna in the signal transmission mode and an operating frequency of the common antenna in the energy reception mode are both 2.4 GHz.
According to another exemplary embodiment of the present invention, an operating frequency of the common antenna in the signal transmission mode is different from an operating frequency of the common antenna in the energy reception mode.
According to another exemplary embodiment of the present invention, the wireless signal transmitting unit further includes: and the signal sending device is electrically connected with the control processing circuit and is suitable for generating a wireless radio frequency signal containing the processed temperature information, and the shared antenna is connected to the signal sending device and is suitable for transmitting the radio frequency signal outwards.
According to another exemplary embodiment of the invention, the radio frequency energy harvesting unit further comprises: an energy receiving device electrically connected with the common antenna and adapted to receive radio frequency energy from the common antenna; the energy conversion device is suitable for converting the radio frequency energy received by the energy receiving device into direct current electric energy; an electric energy storage device adapted to store the dc electric energy output from the energy conversion device; and a power supply device adapted to supply the direct-current electric energy stored in the electric energy storage device to the control processing circuit and the temperature sensor.
According to another exemplary embodiment of the present invention, the electrical energy storage device is a non-electrochemical type electrical energy storage device.
According to another exemplary embodiment of the present invention, the temperature probe has a plug portion and a handle portion, the plug portion being adapted to be inserted into an object to be heated; the handle portion has a thermal insulation layer, and at least a portion of the control processing circuit is disposed in the handle portion and thermally isolated from an external environment by the thermal insulation layer.
According to another exemplary embodiment of the present invention, a vacuum insulation layer is formed in the handle portion, and the at least a portion of the control processing circuit is wrapped in the vacuum insulation layer, thereby thermally insulating the at least a portion of the control processing circuit from an external environment.
According to another exemplary embodiment of the present invention, a layer of heat insulating material is provided in the grip portion, the at least a portion of the control and processing circuitry being wrapped in the layer of heat insulating material, thereby thermally insulating the at least a portion of the control and processing circuitry from an external environment.
According to another exemplary embodiment of the present invention, the temperature detector further comprises a wireless signal transmitting unit, and the wireless signal transmitting unit is adapted to wirelessly transmit the processed temperature information to the outside by radio frequency.
According to another exemplary embodiment of the present invention, the temperature detector further comprises a radio frequency energy harvesting unit for receiving radio frequency energy and converting the received radio frequency energy into direct current electric energy for supplying power to the control processing circuit and the temperature sensor.
According to another exemplary embodiment of the present invention, the wireless signal transmitting unit and the radio frequency energy harvesting unit are disposed in a handle portion of the temperature probe and thermally isolated from an external environment by the thermal insulation layer.
According to another exemplary embodiment of the present invention, at least a part of the electronic components of the wireless signal emitting unit and the radio frequency energy harvesting unit and at least a part of the control processing circuit are integrated on a circuit board, which is placed in the handle portion of the probe and is thermally isolated from the external environment by the thermal insulation layer.
According to another exemplary embodiment of the present invention, the antennas in the wireless signal transmitting unit and the radio frequency energy harvesting unit are not integrated onto the circuit board and are separately provided in the handle portion of the temperature probe.
According to another aspect of the present invention, there is provided a temperature detection system including: the aforementioned temperature detector; the wireless signal receiving antenna is used for receiving a radio frequency signal transmitted by a wireless signal transmitting unit of the temperature detector; and the radio frequency energy transmitting antenna is used for transmitting radio frequency energy to the temperature detector, and the radio frequency energy acquisition unit of the temperature detector is suitable for receiving the radio frequency energy transmitted from the radio frequency energy transmitting antenna.
According to an exemplary embodiment of the invention, the wireless signal receiving antenna and the radio frequency energy transmitting antenna are integrated on the heating device or provided on separate means outside the heating device.
In the foregoing various exemplary embodiments according to the present invention, the temperature detector uses a special wireless signal transmitting unit to wirelessly transmit the temperature signal outwards, and uses a special radio frequency energy collecting unit to wirelessly receive the radio frequency energy, so that a cable connection is not required, and the convenience and safety of the temperature detector are improved.
Further, in some exemplary embodiments of the present invention, since at least a part of the control processing circuit is provided in the handle portion of the temperature detector, the size of the plug portion is reduced, so that the plug portion of the temperature detector is more easily inserted into the object to be heated without affecting the appearance and heating effect of the object to be heated.
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Drawings
FIG. 1 shows a schematic view of a heating apparatus according to an exemplary embodiment of the present invention;
FIG. 2 shows a functional block diagram of a temperature detection system according to an example embodiment of the present invention;
FIG. 3 shows a schematic diagram of a temperature probe according to an example embodiment of the invention;
FIG. 4 shows a schematic diagram of a temperature probe according to another exemplary embodiment of the present invention;
FIG. 5 shows a functional block diagram of a temperature detection system according to another exemplary embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to one general technical concept of the present invention, there is provided a temperature detector adapted to detect a temperature of an object to be heated in a heating apparatus. The temperature probe includes: a temperature sensor adapted to detect a temperature of the heated object; the control processing circuit is connected with the temperature sensor and is suitable for processing the temperature signal detected by the temperature sensor; the wireless signal transmitting unit is suitable for wirelessly transmitting the processed temperature information to the outside in a radio frequency mode; and the radio frequency energy acquisition unit is suitable for receiving radio frequency energy and converting the received radio frequency energy into direct current electric energy so as to supply power to the control processing circuit and the temperature sensor.
According to another general technical concept of the present invention, there is provided a temperature sensing system, including: a temperature detector; the wireless signal receiving antenna is used for receiving a radio frequency signal transmitted by a wireless signal transmitting unit of the temperature detector; and the radio frequency energy transmitting antenna is used for transmitting radio frequency energy to the temperature detector, and the radio frequency energy acquisition unit of the temperature detector is suitable for receiving the radio frequency energy transmitted from the radio frequency energy transmitting antenna.
Fig. 1 shows a schematic view of a heating device 300 according to an exemplary embodiment of the present invention.
As shown in fig. 1, in the illustrated embodiment, the heating apparatus 300 may be an oven or other cooking apparatus suitable for heating an object 400 for toasting the object 400. The heating apparatus 300 has a temperature detection system for detecting the temperature of the baked object 400 and an intelligent control apparatus 200 for adjusting the power of the heating apparatus 300 according to the detected temperature.
FIG. 2 shows a functional block diagram of a temperature detection system according to an example embodiment of the present invention.
As shown in fig. 1 and 2, in the illustrated embodiment, the temperature detection system mainly includes: a temperature probe 100 and a wireless signal receiving antenna 210. The temperature detector 100 mainly includes: a temperature sensor 140, a control processing circuit 133 and wireless signal transmitting units 110, 131. The temperature sensor 140 is adapted to detect the temperature of the object 400 being heated in the heating device 300. The control processing circuit 133 is electrically connected to the temperature sensor 140 and is adapted to process the temperature signal detected by the temperature sensor 140. The wireless signal transmitting units 110 and 131 are adapted to wirelessly transmit the processed temperature information to the outside in a radio frequency manner. The wireless signal receiving antenna 210 is integrated on the heating apparatus 300 or provided on a separate device outside the heating apparatus 300, for receiving the radio frequency signal emitted from the wireless signal emitting unit 110, 131.
As shown in fig. 1 and 2, in the illustrated embodiment, the temperature detection system further comprises an rf energy transmitting antenna 220, the rf energy transmitting antenna 220 being integrated on the heating device 300 or a separate device provided outside the heating device 300 for transmitting rf energy to the temperature detector 100 in the heating device 300.
As shown in fig. 1 and 2, in the illustrated embodiment, the temperature probe 100 further includes a rf energy harvesting unit 120, 132, 1321, 1322, 1323, the rf energy harvesting unit 120, 132, 1321, 1322, 1323 being adapted to receive rf energy emitted from the rf energy transmitting antenna 220 and convert the received rf energy into dc electrical energy for powering the control processing circuit 133 and the temperature sensor 140.
As shown in fig. 1 and 2, in the illustrated embodiment, the wireless signal transmitting unit 110, 131 includes a wireless signal antenna 110 adapted to transmit radio frequency signals to a wireless signal receiving antenna 210. The rf energy harvesting unit 120, 132, 1321, 1322, 1323 includes an rf energy receiving antenna 120 adapted to receive rf energy emitted from the rf energy transmitting antenna 220.
As shown in fig. 1 and 2, in the illustrated embodiment, the operating frequency of the wireless signal antenna 110 is different from the operating frequency of the rf energy receiving antenna 120. In this way, it is ensured that the wireless signal antenna 110 and the rf energy receiving antenna 120 can operate independently at the same time without interfering with each other.
As shown in fig. 1 and fig. 2, in an exemplary embodiment of the invention, the operating frequency of the wireless signal antenna 110 is 2.4GHz in an ISM band, and the operating frequency of the radio frequency energy receiving antenna 120 is 868MHz, 915MHz, 433MHz, or 2.4GHz in the ISM band.
As shown in fig. 1 and fig. 2, in the illustrated embodiment, the wireless signal transmitting unit further includes a signal transmitting device 131, and the signal transmitting device 131 is electrically connected to the control processing circuit 133 and is adapted to generate a wireless radio frequency signal containing the processed temperature information.
As shown in fig. 1 and 2, in the illustrated embodiment, the wireless signal antenna 110 is connected to a signal transmitting device 131, which is adapted to transmit radio frequency signals outwards.
As shown in fig. 1 and 2, in the illustrated embodiment, the signal transmitting device 131 may employ a bluetooth low energy BLE communication protocol or a bluetooth 5.0 protocol.
As shown in fig. 1 and 2, in the illustrated embodiment, the rf energy harvesting unit 120, 132, 1321, 1322, 1323 further includes: energy-receiving device 132, energy-conversion device 1321, electrical energy storage device 1322, and power supply device 1323. The energy receiving device 132 is electrically connected to the rf energy receiving antenna 120 and is adapted to receive rf energy from the rf energy receiving antenna 120. The energy transforming device 1321 is adapted to transform the radio frequency energy received by the energy receiving device 132 into direct current energy. Electrical energy storage device 1322 is adapted to store dc electrical energy output from energy conversion device 1321. The power supply device 1323 is adapted to supply the dc power stored in the power storage device 1322 to the control processing circuit 133 and the temperature sensor 140.
As shown in fig. 1 and 2, in the illustrated embodiment, the electrical energy storage device 1322 is a non-electrochemical type of electrical energy storage device, such as a capacitor.
In the embodiment shown in fig. 2, the wireless signal transmitting units 110 and 131 and the rf energy harvesting units 120, 132, 1321, 1322, 1323 each include a separate antenna. However, the invention is not limited thereto, and the wireless signal transmitting unit and the radio frequency energy harvesting unit may also comprise a common antenna.
FIG. 5 shows a functional block diagram of a temperature detection system according to another exemplary embodiment of the present invention.
As shown in fig. 5, in the illustrated embodiment, the wireless signal transmitting units 150, 131 and the rf energy harvesting units 150, 132, 1321, 1322, 1323 include a common antenna 150. The control processing circuit 133 is adapted to control the common antenna 150 to switch between a signal transmission mode for transmitting rf signals and an energy reception mode for receiving rf energy according to a preset program.
In an exemplary embodiment of the present invention, the operating frequency of the aforementioned shared antenna 150 in the signal transmission mode may be the same as the operating frequency of the shared antenna 150 in the energy reception mode.
In an exemplary embodiment of the present invention, the operating frequency of the common antenna 150 in the signal transmission mode and the operating frequency of the common antenna 150 in the energy receiving mode are both 2.4 GHz.
However, the present invention is not limited thereto, and the operating frequency of the shared antenna 150 in the signal transmission mode may be different from the operating frequency of the shared antenna 150 in the energy reception mode.
As shown in fig. 1 and fig. 5, in the illustrated embodiment, the wireless signal transmitting units 150 and 131 further include a signal transmitting device 131, and the signal transmitting device 131 is electrically connected to the control processing circuit 133 and is adapted to generate a wireless rf signal containing the processed temperature information. The common antenna 150 is connected to the signal transmitting device 131 and is adapted to transmit radio frequency signals outwards.
As shown in fig. 1 and 5, in the illustrated embodiment, the rf energy harvesting unit 150, 132, 1321, 1322, 1323 further includes: energy-receiving device 132, energy-conversion device 1321, electrical energy storage device 1322, and power supply device 1323. The energy receiving device 132 is electrically connected to the common antenna 150 and is adapted to receive rf energy from the common antenna 150. The energy transforming device 1321 is adapted to transform the radio frequency energy received by the energy receiving device 132 into direct current energy. Electrical energy storage device 1322 is adapted to store dc electrical energy output from energy conversion device 1321. The power supply device 1323 is adapted to supply the dc power stored in the power storage device 1322 to the control processing circuit 133 and the temperature sensor 140.
FIG. 3 shows a schematic diagram of a temperature probe 100 according to an exemplary embodiment of the present invention.
As shown in fig. 1 and 3, in the illustrated embodiment, the temperature probe 100 includes a plug portion 100a and a handle portion 100 b. The plug portion 100a is connected to the handle portion 100b and is adapted to be inserted into the object 400. The temperature sensor 140 is provided in the plug portion 100a of the temperature detector 100. As shown in fig. 2, in the illustrated embodiment, the temperature probe 100 includes a plurality of temperature sensors 140, and the plurality of temperature sensors 140 may be arranged in the plug part 100a at intervals along a length direction of the plug part 100 a.
As shown in fig. 1, 2 and 3, in the illustrated embodiment, the handle portion 100b includes a vacuum insulation layer 101. At least a portion of the control processing circuitry 133 is disposed in the handle portion 100b and is thermally isolated from the external environment by the vacuum insulation layer 101.
As shown in fig. 1, 2 and 3, in the illustrated embodiment, at least a portion of the electronic components of the wireless signal emitting units 110, 131 and the rf energy harvesting units 120, 132, 1321, 1322, 1323 and at least a portion of the control processing circuit 133 are integrated on a circuit board 130, and the circuit board 130 is disposed in the handle portion 100b of the temperature probe 100 and is thermally isolated from the external environment by the vacuum insulation layer 101.
Fig. 4 shows a schematic view of a temperature probe 100 according to another exemplary embodiment of the present invention.
As shown in fig. 1 and 4, in the illustrated embodiment, the aforementioned circuit board 130 is wrapped in the insulating material layer 102, thereby thermally isolating the circuit board 130 from the outside.
As shown in fig. 3 and 4, in the illustrated embodiment, the antennas 110, 120 of the wireless signal transmitting unit 110, 131 and the rf energy harvesting unit 120, 132, 1321, 1322, 1323 are not integrated onto the circuit board 130, but are separately disposed in the handle portion 100b of the temperature probe 100 and are not surrounded by a thermal insulation layer because the antennas 110, 120 can operate at high temperature.
Furthermore, in an exemplary embodiment of the present invention, in order to ensure that the antennas 110 and 120 in the wireless signal transmitting unit 110 and 131 and the rf energy harvesting unit 120, 132, 1321, 1322, and 1323 can work properly, the handle portion 100b should be made of a non-electromagnetic shielding material, for example, a high temperature resistant non-metallic material.
It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.
Claims (24)
1. A temperature detector adapted to detect a temperature of an object (400) to be heated in a heating device (300), the temperature detector (100) comprising:
a temperature sensor (140) adapted to detect a temperature of the heated object (400);
a control processing circuit (133) connected with the temperature sensor (140) and adapted to process the temperature signal detected by the temperature sensor (140);
a wireless signal transmitting unit (110, 131) adapted to wirelessly transmit the processed temperature information to the outside by radio frequency; and
a radiofrequency energy harvesting unit (120, 132, 1321, 1322, 1323) adapted to receive radiofrequency energy and convert the received radiofrequency energy into direct current electrical energy for powering the control processing circuit (133) and the temperature sensor (140).
2. The temperature probe of claim 1, wherein:
the wireless signal transmitting unit (110, 131) comprises a wireless signal antenna (110) which is suitable for transmitting radio frequency signals outwards;
the radiofrequency energy harvesting unit (120, 132, 1321, 1322, 1323) comprises a radiofrequency energy receiving antenna (120) adapted to receive radiofrequency energy.
3. The temperature probe of claim 2, wherein:
the operating frequency of the wireless signal antenna (110) is different from the operating frequency of the radio frequency energy receiving antenna (120).
4. The temperature probe of claim 3, wherein:
the working frequency of the wireless signal antenna (110) is ISM frequency band 2.4GHz, and the working frequency of the radio-frequency energy receiving antenna (120) is 868MHz or 915MHz, 433MHz or 2.4GHz of the ISM frequency band.
5. The temperature probe according to claim 2, wherein the wireless signal transmitting unit (110, 131) further comprises:
a signal transmitting device (131) electrically connected with the control processing circuit (133) and adapted to generate a radio frequency signal containing the processed temperature information,
the wireless signal antenna (110) is connected to the signal sending device (131) and is suitable for emitting the radio frequency signal outwards.
6. The temperature probe according to claim 2, characterized in that said signaling means (131) employ the Bluetooth Low Energy (BLE) communication protocol or the Bluetooth 5.0 protocol.
7. The temperature probe of claim 2, wherein the radio frequency energy harvesting unit (120, 132, 1321, 1322, 1323) further comprises:
an energy receiving device (132) electrically connected to the radio frequency energy receiving antenna (120) and adapted to receive radio frequency energy from the radio frequency energy receiving antenna (120);
an energy conversion device (1321) adapted to convert radio frequency energy received by the energy receiving device (132) into direct current electrical energy;
-electrical energy storage means (1322) adapted to store the dc electrical energy output from said energy conversion means (1321); and
-power supply means (1323) adapted to supply said control processing circuit (133) and said temperature sensor (140) with direct current electrical energy stored in said electrical energy storage means (1322).
8. The temperature probe of claim 1, wherein:
said wireless signal transmitting unit (150, 131) and said radio frequency energy harvesting unit (150, 132, 1321, 1322, 1323) comprise a common antenna (150);
the control processing circuit (133) is adapted to control the common antenna (150) to switch between a signal transmission mode for transmitting the radio frequency signal and an energy reception mode for receiving the radio frequency energy according to a preset program.
9. The temperature probe of claim 8, wherein:
the frequency of operation of the shared antenna (150) in the signal transmission mode is the same as the frequency of operation of the shared antenna (150) in the energy reception mode.
10. The temperature probe of claim 9, wherein:
the working frequency of the shared antenna (150) in the signal transmission mode and the working frequency of the shared antenna (150) in the energy receiving mode are both 2.4 GHz.
11. The temperature probe of claim 8, wherein:
the frequency of operation of the shared antenna (150) in the signal transmission mode is different from the frequency of operation of the shared antenna (150) in the energy reception mode.
12. The temperature probe according to claim 8, wherein the wireless signal transmitting unit (150, 131) further comprises:
a signal transmitting device (131) electrically connected with the control processing circuit (133) and adapted to generate a radio frequency signal containing the processed temperature information,
the common antenna (150) is connected to the signal transmitting device (131) and is suitable for transmitting the radio frequency signal outwards.
13. The temperature probe of claim 8, wherein the radio frequency energy harvesting unit (150, 132, 1321, 1322, 1323) further comprises:
an energy receiving device (132) electrically connected to the common antenna (150) and adapted to receive radio frequency energy from the common antenna (150);
an energy conversion device (1321) adapted to convert radio frequency energy received by the energy receiving device (132) into direct current electrical energy;
-electrical energy storage means (1322) adapted to store the dc electrical energy output from said energy conversion means (1321); and
-power supply means (1323) adapted to supply said control processing circuit (133) and said temperature sensor (140) with direct current electrical energy stored in said electrical energy storage means (1322).
14. The temperature probe of claim 7 or 13, wherein: the electrical energy storage device (1322) is of a non-electrochemical type.
15. The temperature probe of claim 1, wherein:
the temperature probe (100) has a plug portion (100a) and a handle portion (100b), the plug portion (100a) being adapted to be inserted into an object (400) to be heated;
the handle unit (100b) has a heat insulating layer (101, 102), and at least a part of the control processing circuit (133) is provided in the handle unit (100b) and is thermally insulated from the external environment by the heat insulating layer (101, 102).
16. The temperature probe of claim 15, wherein:
a vacuum insulation layer (101) is formed in the handle portion (100b), and the at least a part of the control processing circuit (133) is wrapped in the vacuum insulation layer (101) so as to thermally insulate the at least a part of the control processing circuit (133) from an external environment.
17. The temperature probe of claim 15, wherein:
a layer of thermal insulation material (102) is provided in the handle portion (100b), the at least a portion of the control processing circuitry (133) being wrapped in the layer of thermal insulation material (102) so as to thermally isolate the at least a portion of the control processing circuitry (133) from an external environment.
18. The temperature probe of any one of claims 15-17, wherein:
the temperature detector (100) further comprises a wireless signal transmitting unit (110, 131), and the wireless signal transmitting unit (110, 131) is suitable for wirelessly transmitting the processed temperature information to the outside in a radio frequency mode.
19. The temperature probe of claim 18, wherein:
the temperature detector (100) further comprises a radio frequency energy collecting unit (120, 132, 1321, 1322, 1323), wherein the radio frequency energy collecting unit (120, 132, 1321, 1322, 1323) is used for receiving radio frequency energy and converting the received radio frequency energy into direct current electric energy so as to supply power to the control processing circuit (133) and the temperature sensor (140).
20. The temperature probe of claim 19, wherein:
the wireless signal transmitting unit (110, 131) and the radio frequency energy harvesting unit (120, 132, 1321, 1322, 1323) are arranged in the handle portion (100b) of the temperature probe (100) and are thermally isolated from the external environment by the thermal insulation layer (101, 102).
21. The temperature probe of claim 19, wherein:
at least a part of the electronic components of the wireless signal emitting unit (110, 131) and the radio frequency energy harvesting unit (120, 132, 1321, 1322, 1323) and at least a part of the control processing circuit (133) are integrated on a circuit board (130), the circuit board (130) being placed in the handle portion (100b) of the probe (100) and being thermally isolated from the external environment by the thermal insulation layer (101, 102).
22. The temperature probe of claim 21, wherein:
the antennas (110, 120) in the wireless signal transmitting unit and the radio frequency energy harvesting unit are not integrated onto the circuit board (130) and are separately provided in the handle portion (100b) of the temperature probe (100).
23. A temperature detection system, comprising:
a temperature probe (100) according to any one of claims 1 to 22;
a wireless signal receiving antenna (210) for receiving a radio frequency signal transmitted from a wireless signal transmitting unit (110, 131) of the temperature probe (100); and
a radio frequency energy transmitting antenna (220) for transmitting radio frequency energy to the temperature probe (100),
the radiofrequency energy harvesting unit (120, 132, 1321, 1322, 1323) of the temperature probe (100) is adapted to receive radiofrequency energy emitted from the radiofrequency energy transmission antenna (220).
24. The temperature detection system of claim 23, wherein:
the wireless signal receiving antenna (210) and the radio frequency energy transmitting antenna (220) are integrated on the heating device (300) or provided on separate means outside the heating device (300).
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| CN201811258003.XA CN111103068A (en) | 2018-10-26 | 2018-10-26 | Temperature detector and temperature detection system |
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