Wireless temperature measuring device and household appliance

Abstract

The invention provides a wireless temperature measuring device and a household appliance. The wireless temperature measuring device comprises a wireless communication circuit, a power generation circuit, a starting circuit, a temperature measuring circuit and an energy storage circuit, wherein a first input end of the starting circuit is connected with a first output end of the wireless communication circuit; the power input end of the temperature measuring circuit is connected with the output end of the starting circuit, and the communication end of the temperature measuring circuit is connected with the communication end of the wireless communication circuit; the energy storage circuit is connected with the second input end of the starting circuit and the output end of the power generation circuit. The starting circuit starts the temperature measuring circuit to measure the temperature when the wireless communication circuit receives the read temperature signal and the output voltage of the energy storage circuit reaches a voltage threshold value. The wireless temperature measuring device provided by the invention can improve the speed of temperature measurement.

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly to a wireless temperature measuring device and a household appliance device. Background Art

[0002] In the existing wireless temperature measuring device, a power generation circuit is provided in the temperature measuring device to supply electrical energy to the power consumption circuit of the temperature measuring device. However, the energy conversion of the power generation circuit is limited, and the power consumption of the wireless temperature measuring device is high, resulting in the wireless temperature measuring device being unable to quickly collect enough electrical energy for temperature measurement. Summary of the Invention

[0003] This application provides a wireless temperature measuring device and a household appliance device, which can improve the speed of temperature measurement.

[0004] This application provides a wireless temperature measuring device, which includes a wireless communication circuit, a power generation circuit, a startup circuit, a temperature measurement circuit, and an energy storage circuit. The first input end of the startup circuit is connected to the first output end of the wireless communication circuit; the power input end of the temperature measurement circuit is connected to the output end of the startup circuit, and the communication end of the temperature measurement circuit is connected to the communication end of the wireless communication circuit; the energy storage circuit is respectively connected to the second input end of the startup circuit and the output end of the power generation circuit; wherein, the startup circuit starts the temperature measurement circuit to perform temperature measurement when the wireless communication circuit receives a temperature reading signal and the output voltage of the energy storage circuit reaches a voltage threshold.

[0005] This application provides a household appliance device, which includes a device main body and a control circuit. The control circuit has a wireless communication interface, and the wireless communication interface is used to connect to the above-mentioned wireless temperature measuring device.

[0006] The beneficial effects of this application are as follows: The wireless temperature measurement device provided by this application includes a wireless communication circuit, a power generation circuit, a startup circuit, a temperature measurement circuit, and an energy storage circuit. The first input terminal of the startup circuit is connected to the first output terminal of the wireless communication circuit; the power input terminal of the temperature measurement circuit is connected to the output terminal of the startup circuit, and the communication terminal of the temperature measurement circuit is connected to the communication terminal of the wireless communication circuit; the energy storage circuit is respectively connected to the second input terminal of the startup circuit and the output terminal of the power generation circuit; wherein, the startup circuit starts the temperature measurement circuit to perform temperature measurement when the wireless communication circuit receives a temperature reading signal and the output voltage of the energy storage circuit reaches a voltage threshold. In the above manner, this application utilizes the wireless communication circuit to complete the functions of data reception and transmission of the wireless temperature measurement device to the outside, and realizes the passive power supply of the wireless temperature measurement device through the power generation circuit and the energy storage circuit. By setting up the startup circuit, the temperature measurement circuit is powered to perform temperature measurement only when temperature measurement is required and the energy storage circuit has sufficient electrical energy. Then, the temperature measurement circuit can avoid consuming the electrical energy of the energy storage circuit when the wireless temperature measurement device does not need temperature measurement. In addition, when the output voltage of the energy storage circuit does not reach the voltage threshold, that is, when the energy storage circuit has not collected enough electrical energy, the startup circuit remains disconnected from the temperature measurement circuit to further reduce the consumption of the electrical energy of the energy storage circuit, so that the electrical energy consumption in the energy storage circuit is reduced. As a result, the rate at which the energy storage circuit stores electrical energy, that is, the speed at which the output voltage of the energy storage circuit reaches the voltage threshold, is increased, thereby improving the speed of temperature measurement of the wireless measurement device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0008] Figure 1 is a schematic diagram of the electrical connection structure of an embodiment of the wireless temperature measurement device provided by this application;

[0009] Figure 2 is a schematic circuit diagram of an embodiment of the wireless temperature measurement device provided by this application;

[0010] Figure 3 is a schematic structural diagram of an embodiment of the wireless temperature measurement device provided by this application;

[0011] Figure 4 is a schematic structural diagram of an embodiment of a household electrical appliance provided by this application;

[0012] Figure 5 is a schematic flowchart of an embodiment of a household electrical appliance for obtaining the temperature of food provided by this application. Detailed implementation manners

[0013] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0014] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0015] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0016] The present application provides a wireless temperature measurement device. Refer to Figures 1 to 3 , Figure 1 which is a schematic diagram of the electrical connection structure of an embodiment of the wireless temperature measurement device provided by the present application, Figure 2 which is a schematic circuit diagram of an embodiment of the wireless temperature measurement device provided by the present application, Figure 3 which is a schematic structural diagram of an embodiment of the wireless temperature measurement device provided by the present application. As shown in Figures 1 to 3 , the wireless temperature measurement device 10 includes a wireless communication circuit 110, a power generation circuit 120, a startup circuit 130, a temperature measurement circuit 150, and an energy storage circuit 140. The first input end of the startup circuit 130 is connected to the first output end of the wireless communication circuit 110; the power input end of the temperature measurement circuit 150 is connected to the output end of the startup circuit 130, and the communication end of the temperature measurement circuit 150 is connected to the communication end of the wireless communication circuit 110; the energy storage circuit 140 is respectively connected to the second input end of the startup circuit 130, the output end of the power generation circuit 120, and the wireless communication circuit 110; wherein, the startup circuit 130 starts the temperature measurement circuit 150 to perform temperature measurement when the wireless communication circuit 110 receives a temperature reading signal and the output voltage of the energy storage circuit 140 reaches a voltage threshold.

[0017] Among them, the wireless communication circuit 110 realizes data reception and transmission based on radio frequency technology. That is, the wireless communication circuit 110 receives the read temperature signal and sends out the temperature information when the temperature measurement signal acquires the temperature information. Specifically, the wireless communication circuit 110 completes a communication process of the wireless communication circuit 110 based on the received energy, that is, completes a process of data reception and transmission. For example, the radio frequency antenna of the wireless communication circuit 110 collects the energy sent by the radio frequency transmitting end for the wireless communication circuit 110 to use, and at the same time completes data exchange with the radio frequency transmitting end.

[0018] The output end of the power generation circuit 120 is connected to the energy storage circuit 140. The power generation circuit 120 is used to convert energy such as thermal energy, electromagnetic energy, solar energy, etc. into electric energy and output the electric energy to the energy storage circuit 140. The energy storage circuit 140 stores the electric energy output by the power generation circuit 120 and provides electric energy when power-consuming circuits such as the temperature measurement circuit 150 and the startup circuit 130 need electricity. Among them, the energy storage circuit 140 includes an energy storage capacitor EC1. The positive electrode of the energy storage capacitor EC1 is respectively connected to the input end of the startup circuit 130 and the output end of the power generation circuit 120, and the negative electrode of the energy storage capacitor EC1 is grounded.

[0019] The first input end of the startup circuit 130 is connected to the first output end of the wireless communication circuit 110 and is used to receive the temperature detection signal sent by the wireless communication circuit 110 based on the read temperature signal; the second input end of the startup circuit 130 is connected to the energy storage circuit 140 and is used to receive the voltage signal output by the energy storage circuit 140. Among them, when the first input end of the startup circuit 130 receives the temperature detection signal and the output voltage of the energy storage circuit 140 reaches the voltage threshold, the temperature measurement circuit 150 is started to perform temperature measurement. That is, the startup circuit 130 inputs a voltage to the power input end of the temperature measurement circuit 150 to start the temperature measurement circuit 150, and the temperature measurement circuit 150 performs temperature measurement after startup. That is, when temperature measurement is not required, the temperature measurement circuit 150 is not connected to the power supply. When temperature measurement is required and the voltage output by the energy storage circuit 140 reaches the voltage threshold, the temperature measurement circuit 150 consumes the electric energy stored in the energy storage circuit 140.

[0020] The wireless temperature measurement device 10 provided by this application includes a wireless communication circuit 110, a power generation circuit 120, a startup circuit 130, a temperature measurement circuit 150, and an energy storage circuit 140. The first input end of the startup circuit 130 is connected to the first output end of the wireless communication circuit 110; the power input end of the temperature measurement circuit 150 is connected to the output end of the startup circuit 130, and the communication end of the temperature measurement circuit 150 is connected to the communication end of the wireless communication circuit 110; the energy storage circuit 140 is respectively connected to the second input end of the startup circuit 130 and the output end of the power generation circuit 120; wherein, the startup circuit 130 starts the temperature measurement circuit 150 to perform temperature measurement when the wireless communication circuit 110 receives a temperature reading signal and the output voltage of the energy storage circuit 140 reaches a voltage threshold. In the above manner, this application uses the wireless communication circuit 110 to complete the functions of external data reception and transmission of the wireless temperature measurement device 10, and realizes the passive power supply of the wireless temperature measurement device 10 through the power generation circuit 120 and the energy storage circuit 140. By setting the startup circuit 130, the temperature measurement circuit 150 is powered to perform temperature measurement only when temperature measurement is required and the energy storage circuit 140 has sufficient electrical energy. Then, the temperature measurement circuit 150 can not consume the electrical energy of the energy storage circuit 140 when the wireless temperature measurement device 10 does not need temperature measurement. In addition, when the output voltage of the energy storage circuit 140 does not reach the voltage threshold, that is, when the energy storage circuit 140 has not collected enough electrical energy, the startup circuit 130 remains in a disconnected state from the temperature measurement circuit 150 to further reduce the consumption of the electrical energy of the energy storage circuit 140, so that the electrical energy consumption in the energy storage circuit 140 is reduced. Thus, the rate at which the energy storage circuit 140 stores electrical energy, that is, the speed at which the output voltage of the energy storage circuit 140 reaches the voltage threshold, is accelerated, thereby improving the speed of temperature measurement of the wireless measurement device 10.

[0021] Optionally, the startup circuit 130 includes an AND gate circuit U5 and a first switching tube SW1. The first input end of the AND gate circuit U5 is connected to the first output end of the wireless communication circuit 110, the second input end of the AND gate circuit U5 is connected to the energy storage circuit 140, the output end of the AND gate circuit U5 is connected to the control end of the first switching tube SW1, the first end of the first switching tube SW1 is connected to the energy storage circuit 140, and the second end of the first switching tube SW1 is connected to the power input end of the temperature measurement circuit 150.

[0022] Understandably, the AND gate circuit U5 performs an AND operation on the signals input from the first input terminal and the second input terminal of the AND gate circuit U5, and outputs the AND operation result from its output terminal. When the wireless communication circuit 110 receives a temperature reading signal, it outputs a temperature detection signal corresponding to the temperature reading signal to the first input terminal of the AND gate circuit U5. The AND gate circuit U5 performs an AND operation on the temperature detection signal and the voltage signal output by the energy storage circuit 140, and inputs the AND operation result of the two to the control terminal of the first switch circuit. When the AND operation result can turn on the first switch tube SW1, the branch of the energy storage circuit 140, the first switch tube SW1, and the temperature measurement circuit 150 is turned on, so that the energy storage circuit 140 supplies power to the temperature measurement circuit 150, and thus the temperature measurement circuit 150 can be started and perform temperature measurement.

[0023] For example, when the wireless communication circuit 110 receives a temperature reading signal, it outputs a high-level temperature detection signal. When the output voltage of the energy storage circuit 140 is greater than the voltage threshold, it appears as a high-level signal inside the AND gate circuit U5. Then the result of ANDing the two high-level signals is high level, and the high-level signal turns on the first switch tube SW1 to make the energy storage circuit 140 supply power to the temperature measurement circuit 150.

[0024] The startup circuit 130 of this embodiment includes an AND gate circuit U5 and a first switch tube SW1. The first input terminal of the AND gate circuit U5 is connected to the first output terminal of the wireless communication circuit 110, the second input terminal of the AND gate circuit U5 is connected to the energy storage circuit 140, the output terminal of the AND gate circuit U5 is connected to the control terminal of the first switch tube SW1, the first terminal of the first switch tube SW1 is connected to the energy storage circuit 140, and the second terminal of the first switch tube SW1 is connected to the power input terminal of the temperature measurement circuit 150. In this way, when the wireless temperature measurement device 10 receives a temperature reading request and the energy storage circuit 140 can support the completion of temperature measurement, power is supplied to the temperature measurement circuit 150, which can accelerate the rate of the wireless temperature measurement device 10 collecting electric energy, thereby improving the temperature detection speed of the wireless temperature measurement device 10.

[0025] Optionally, the wireless temperature measurement device 10 further includes a diode D1 and a second switch tube SW2. The anode of the diode D1 is connected to the energy storage circuit 140, the cathode of the diode D1 is connected to the first terminal of the first switch tube SW1 and the power output terminal of the wireless communication circuit 110. The control terminal of the second switch tube SW2 is connected to the second output terminal of the wireless communication circuit 110. The first terminal of the second switch tube SW2 is connected to the power output terminal of the wireless communication circuit 110, and the second terminal of the second switch tube SW2 is connected to the energy storage circuit 140.

[0026] The wireless communication circuit 110 of this embodiment can also convert the received radio frequency energy into electrical energy to charge the energy storage circuit 140. At the same time, the energy storage circuit 140 can also supply power to the wireless communication circuit 110. The diode D1 is a rectifier diode D1, which can limit the wireless communication circuit 110 from charging the energy storage circuit 140 to prevent the energy storage circuit 140 from pulling down the voltage of the wireless communication circuit 110 for a long time and causing it to stop working. When the wireless communication circuit 110 does not send data externally, the second switching tube SW2 is controlled to turn on so that the wireless communication circuit 110 supplies power to the energy storage circuit 140.

[0027] The wireless temperature measurement device 10 of this embodiment further includes a diode D1 and a second switching tube SW2. The anode of the diode D1 is connected to the energy storage circuit 140, the cathode of the diode D1 is connected to the first end of the first switching tube SW1 and the power output terminal of the wireless communication circuit 110, the control terminal of the second switching tube SW2 is connected to the second output terminal of the wireless communication circuit 110, the first end of the second switching tube SW2 is connected to the power output terminal of the wireless communication circuit 110, and the second end of the second switching tube SW2 is connected to the energy storage circuit 140. In this way, while the wireless communication circuit 110 realizes the wireless communication function, it can also convert radio frequency energy into electrical energy to charge the energy storage circuit 140, further increasing the power source and expanding the application range of the wireless temperature measurement device 10.

[0028] Optionally, the wireless communication circuit 110 includes an inductive antenna ANT1 and a modulation and demodulation control circuit U1. The antenna terminal of the modulation and demodulation control circuit U1 is connected to the inductive antenna ANT1, the first output terminal of the modulation and demodulation control circuit U1 is connected to the control terminal of the second switching tube SW2, the second output terminal of the modulation and demodulation control circuit U1 is connected to the first input terminal of the AND gate circuit U5, and the power output terminal of the modulation and demodulation control circuit U1 is connected to the first end of the second switching tube SW2 and the cathode of the diode D1.

[0029] Optionally, the power generation circuit 120 includes an electromagnetic power generation circuit (not labeled in the figure). The output terminal of the electromagnetic power generation circuit is connected to the input terminal of the energy storage circuit 140. The electromagnetic power generation circuit is used to convert the magnetic field leakage energy in the detection environment into electrical energy to charge the energy storage circuit 140. The power generation circuit 120 of this embodiment includes an electromagnetic power generation circuit, which can collect the electromagnetic energy in the environment where the wireless temperature measurement device 10 is located and convert the electromagnetic energy into electrical energy.

[0030] Specifically, the electromagnetic power generation circuit includes an inductance coil L1, a capacitor C2, and a rectifier circuit U3. The first end of the capacitor C2 is connected to the first end of the inductance coil L1. The first input terminal of the rectifier circuit U3 is connected to the second end of the inductance coil L1, the second input terminal of the rectifier circuit U3 is connected to the second end of the capacitor C2, the first output terminal of the rectifier circuit U3 is connected to the energy storage circuit 140, and the second output terminal of the rectifier circuit U3 is grounded.

[0031] It can be understood that the capacitor C2 is a power compensation capacitor for the inductance coil L1. After the inductance coil L1 collects the magnetic leakage energy in the environment where the wireless temperature measurement device 10 is located, it is rectified by the rectifier circuit U3 and sent to the energy storage circuit 140 for storage.

[0032] The electromagnetic power generation circuit of this embodiment can achieve the electromagnetic power generation function only by including the inductance coil L1, the capacitor C2, and the rectifier circuit U3. The structure is simple and easy to implement.

[0033] Optionally, the power generation circuit 120 further includes a semiconductor power generation circuit. The semiconductor power generation circuit is connected to the input terminal of the energy storage circuit 140, and the semiconductor power generation circuit is used to convert thermal energy into electrical energy to charge the energy storage circuit 140.

[0034] Specifically, the semiconductor power generation circuit includes a thermoelectric cooler TEC1 and a boost circuit U4. The input terminal of the boost circuit U4 is connected to the positive electrode of the thermoelectric cooler TEC1, the output terminal of the boost circuit U4 is connected to the energy storage circuit 140, and the negative electrode of the thermoelectric cooler TEC1 is grounded.

[0035] It can be understood that when there is a temperature difference between the cold end and the hot end of the thermoelectric cooler TEC1, an electric potential difference can be formed based on the temperature difference, that is, thermal energy is converted into electrical energy. For example, when the wireless temperature measurement device 10 measures the temperature of food, the probe 170 of the wireless temperature measurement device 10 for measuring the object to be measured is inserted into the food material, and the probe 170 contacts the food material and gets hot. The thermal energy is transferred to one end of the thermoelectric cooler TEC1 as the hot end of the thermoelectric cooler TEC1, and the other end of the thermoelectric cooler TEC1 contacts the environment to maintain room temperature as the cold end of the thermoelectric cooler TEC1. There is a temperature difference and an electric potential difference between the cold end and the hot end of the thermoelectric cooler TEC1, that is, the thermoelectric cooler TEC1 can convert thermal energy into electrical energy.

[0036] The power generation circuit 120 of this embodiment is provided with an electromagnetic power generation circuit and a semiconductor power generation circuit to increase the source of electrical energy through different power generation methods, so that the wireless temperature measurement device 10 can be applied to complex environments and different scenarios, and the application range of the wireless temperature measurement device 10 is improved.

[0037] Optionally, the wireless temperature measurement device 10 further includes a housing 160 and a probe 170. Among them, the probe 170 is located at the first end of the housing 160 and is used to measure the temperature of the object to be measured. Among them, a thermoelectric cooler TEC1 is provided at the second end of the housing 160. The inductance coil L1 is disposed near the first end of the housing 160, and the inductance coil L1 surrounds the outer sidewall of the housing 160. At least part of the inductance antenna ANT1 of the wireless communication circuit 110 is disposed around the outer sidewall of the housing 160 and is spaced apart from the inductance coil L1. Specifically, the temperature sensor of the temperature measurement circuit 150 is placed at the tip of the probe 170. When the wireless temperature measurement device 10 is used in an electromagnetic heating environment, the inductance coil L1 can collect the leakage magnetic field. The inductance antenna ANT1, that is, the radio frequency antenna, can collect the radio frequency energy for the wireless communication circuit 110 to use and complete data exchange at the same time. At least part of the inductance antenna ANT1 surrounding the outer sidewall of the housing 160 can expand the antenna coverage area and enhance the communication distance. The inside of the housing 160 is filled with a heat-conducting material, so that heat energy can be quickly conducted from the probe 170 to the thermoelectric cooler TEC1 to form an electric potential difference.

[0038] Optionally, the temperature measurement circuit 150 includes a processor U2 with low power consumption, a temperature sensor NTC1, a voltage-dividing resistor R1, and a protection resistor R3. Among them, the first output terminal of the processor U2 is connected to one end of the voltage-dividing resistor R1. The other end of the voltage-dividing resistor R1 is respectively connected to one end of the protection resistor R3 and one end of the temperature sensor NTC1. The other end of the protection resistor R3 is connected to the acquisition terminal of the processor U2. The other end of the temperature sensor NTC1 is connected to the second output terminal of the processor U2. The communication terminal of the processor U2 is connected to the communication terminal of the modulation and demodulation control circuit U1. The power input terminal of the processor U2 is connected to the second end of the first switching tube SW1. When it is necessary to sample the temperature of the temperature sensor NTC1, that is, when the processor U2 is powered, the processor U2 outputs a high level at the first output terminal and a low level at the second output terminal, so that the acquisition terminal of the processor U2 acquires the voltage of the temperature sensor NTC1. Among them, the processor U2 uses a comparison method during sampling. Through the above method, the power consumption of the analog-to-digital conversion module sampling of the processor U2 can be minimized, thereby balancing the accuracy of the temperature measurement circuit 150 for collecting temperature and the power consumption of the temperature measurement circuit 150.

[0039] Among them, the power consumption of the processor U2 is less than 10 μA, and the operating voltage is less than 2.1 V (preferably in the range of 0.9 to 1.65 V). Because the power consumption is reduced by 4 times when the voltage is reduced by half, the power consumption of the temperature measurement circuit 150 can be further reduced.

[0040] This application provides a household electrical appliance. Refer to Figure 4 , Figure 4 is a schematic structural diagram of an embodiment of the household electrical appliance provided by this application. As shown in Figure 4As shown, the home appliance device 20 includes a device main body 21 and a control circuit 22. The control circuit 22 has a wireless communication interface (not labeled in the figure), and the wireless communication interface is used to connect to the wireless temperature measuring device 10. Among them, the wireless temperature measuring device 10 is any one of the wireless temperature measuring devices in the above-mentioned embodiments of the wireless temperature measuring device 10. Specifically, the home appliance device 20 can be a rice cooker, a microwave oven, an oven, an air fryer, etc., and the specific type of the home appliance device 20 is not limited herein.

[0041] In a specific application, the wireless communication circuit can receive and send information, and convert radio frequency energy into electrical energy to supply power to the energy storage circuit. Refer to Figure 5 , Figure 5 FIG. is a schematic flow chart of an embodiment of the home appliance device provided in the present application for obtaining the food temperature, which specifically includes: the wireless communication interface of the control circuit transmits information outward, the inductive antenna of the wireless communication circuit receives the information, and the modulation and demodulation control circuit of the wireless communication circuit responds to receiving the read temperature signal, and the first output end of the modulation and demodulation control circuit outputs a high-level signal; the modulation and demodulation control circuit responds to receiving the non-read temperature signal, and the modulation and demodulation control circuit sends the address code of the wireless temperature measuring device back to the control circuit. The modulation and demodulation control circuit responds to receiving the temperature information of the temperature measurement circuit, and the modulation and demodulation control circuit sends the temperature information back to the control circuit; the modulation and demodulation control circuit responds to not receiving the temperature information, and the modulation and demodulation control circuit informs the control circuit that the current voltage is low, requests to increase the transmission power, and converts the received radio frequency energy into electrical energy to charge the energy storage circuit.

[0042] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, mechanisms, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] Any process or method description shown in the flow chart or described in other ways herein can be understood as representing a mechanism, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present application includes additional implementations, where the functions can be executed in a manner that is not shown or discussed in the order, including in a substantially simultaneous manner or in the reverse order according to the functions involved, which should be understood by those skilled in the technical field of the embodiments of the present application.

[0044] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite ordered list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (which can be a personal computer, server, network device, or other system that can fetch instructions from the instruction execution system, apparatus, or device and execute the instructions), or used in conjunction with these instruction execution systems, apparatuses, or devices.

[0045] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A wireless temperature measurement device, characterized in that, it includes: a wireless communication circuit and a power generation circuit; a startup circuit, the first input end of the startup circuit is connected to the first output end of the wireless communication circuit; a temperature measurement circuit, the power input end of the temperature measurement circuit is connected to the output end of the startup circuit, and the communication end of the temperature measurement circuit is connected to the communication end of the wireless communication circuit; an energy storage circuit, which is respectively connected to the second input end of the startup circuit and the output end of the power generation circuit; wherein, when the wireless communication circuit receives a temperature reading signal and the output voltage of the energy storage circuit reaches a voltage threshold, the startup circuit starts the temperature measurement circuit to perform temperature measurement.

2. The wireless temperature measurement device according to claim 1, characterized in that, the startup circuit includes: an AND gate circuit, the first input end of the AND gate circuit is connected to the first output end of the wireless communication circuit, and the second input end of the AND gate circuit is connected to the energy storage circuit; a first switching tube, the control end of the first switching tube is connected to the output end of the gate circuit, the first end of the first switching tube is connected to the energy storage circuit, and the second end of the first switching tube is connected to the power input end of the temperature measurement circuit.

3. The wireless temperature measurement device according to claim 2, characterized in that, the wireless temperature measurement device further includes: a diode, the anode of the diode is connected to the energy storage circuit, and the cathode of the diode is connected to the first end of the first switching tube and the power output end of the wireless communication circuit; a second switching tube, the control end of the second switching tube is connected to the second output end of the wireless communication circuit, the first end of the second switching tube is connected to the power output end of the wireless communication circuit, and the second end of the second switching tube is connected to the energy storage circuit.

4. The wireless temperature measurement device according to claim 3, characterized in that, the wireless communication circuit includes: an inductive antenna; a modulation and demodulation control circuit, the antenna end of the modulation and demodulation control circuit is connected to the inductive antenna, the second output end of the modulation and demodulation control circuit is connected to the control end of the second switching tube, the first output end of the modulation and demodulation control circuit is connected to the first input end of the AND gate circuit, the power output end of the modulation and demodulation control circuit is connected to the first end of the second switching tube and the cathode of the diode, and the signal end of the modulation and demodulation control circuit is connected to the signal end of the temperature measurement circuit.

5. The wireless temperature measurement device according to claim 1, characterized in that, the power generation circuit includes: an electromagnetic power generation circuit, which is connected to the input end of the energy storage circuit, and the electromagnetic power generation circuit is used to convert the magnetic field leakage energy in the detected environment into electrical energy to charge the energy storage circuit.

6. The wireless temperature measurement device according to claim 5, characterized in that, the power generation circuit further includes: a semiconductor power generation circuit, which is connected to the input end of the energy storage circuit, and the semiconductor power generation circuit is used to convert heat energy into electrical energy to charge the energy storage circuit.

7. The wireless temperature measurement device according to claim 6, characterized in that, The electromagnetic power generation circuit includes: An inductance coil; A capacitor, the first end of which is connected to the first end of the inductance coil; A rectification circuit, the first input end of which is connected to the second end of the inductance coil, the second input end of which is connected to the second end of the capacitor, the first output end of which is connected to the energy storage circuit, and the second output end of which is grounded; The semiconductor power generation circuit includes: A semiconductor refrigeration sheet, the negative electrode of which is grounded; A boost circuit, the input end of which is connected to the positive electrode of the semiconductor refrigeration sheet, and the output end of which is connected to the energy storage circuit.

8. The wireless temperature measurement device according to claim 7, characterized in that the wireless temperature measurement device further includes: A housing; A probe located at the first end of the housing for measuring the temperature of the object to be measured; wherein, the semiconductor refrigeration sheet is provided at the second end of the housing, the inductance coil is disposed near the first end of the housing, and the inductance coil surrounds the outer sidewall of the housing; at least part of the inductance antenna of the wireless communication circuit surrounds the outer sidewall of the housing and is spaced apart from the inductance coil.

9. The wireless temperature measurement device according to claim 1, characterized in that the energy storage circuit includes: An energy storage capacitor, the positive electrode of which is respectively connected to the input end of the startup circuit and the output end of the power generation circuit, and the negative electrode of which is grounded.

10. A household electrical appliance, characterized in that it includes: A device main body and a control circuit, the control circuit has a wireless communication interface, and the wireless communication interface is used to connect to the wireless temperature measurement device according to any one of claims 1-9.

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