Wireless barbecue thermometer signal transmission control method and wireless barbecue thermometer

Abstract

The present application relates to the field of wireless temperature measurement technology, and provides a wireless barbecue thermometer signal transmission control method and a wireless barbecue thermometer. The signal transmission control method includes: when it is determined that the wireless barbecue thermometer is in use based on the food temperature and the ambient temperature, determining whether the wireless barbecue thermometer is in a signal shielding state based on the change of the ambient temperature; when the wireless barbecue thermometer is in the signal shielding state, adjusting the signal transmission power of the power amplifier in a preset first power adjustment mode to increase the signal transmission power of the wireless barbecue thermometer. By adopting the above technical solution, it is possible to judge whether the wireless barbecue thermometer is in a signal shielding state in combination with the change of the ambient temperature, and realize automatic adjustment of the signal transmission power in combination with the shielding state, thereby reducing the influence of signal shielding on the signal transmission of the wireless barbecue thermometer, and further helping to improve the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of wireless temperature measurement, and in particular to a signal transmission control method of a wireless barbecue thermometer and a wireless barbecue thermometer. Background Art

[0002] Wireless thermometers are devices that use wireless technology to monitor temperature. Their features include miniaturization, digitization, and intelligence, and they can be used in a variety of situations, such as industry, electricity, environmental monitoring, medical and health care, and other fields.

[0003] The reliable effective receiving distance of conventional wireless thermometers in open areas is generally nominally between 100M (300FT) and 150M (500FT). However, in different usage scenarios, the reliable information transmission distance of wireless thermometers will be affected by the actual situation of the scene.

[0004] Take barbecue as an example. During the barbecue process, the wireless thermometer is usually placed in an oven or baking tray. The oven and baking tray may shield the signal sent by the wireless thermometer, making it impossible for the user to receive the signal stably, thereby improving the user experience. Summary of the invention

[0005] In order to reduce the influence of signal shielding on the signal transmission of a wireless thermometer, the present application provides a wireless barbecue thermometer signal transmission control method and a wireless barbecue thermometer.

[0006] In a first aspect, the present application provides a wireless barbecue thermometer signal transmission control method, which adopts the following technical solution:

[0007] A wireless barbecue thermometer signal transmission control method is used in a controller of the wireless barbecue thermometer, wherein the wireless barbecue thermometer further comprises a food temperature sensor, an ambient temperature sensor and a power amplifier connected to the controller signal, and the food temperature sensor is also connected to the power amplifier signal, and the method comprises:

[0008] Determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor;

[0009] When it is determined that the wireless barbecue thermometer is in use, determining whether the wireless barbecue thermometer is in a signal shielding state based on a change in the ambient temperature;

[0010] When it is determined that the wireless barbecue thermometer is in a signal shielding state, the signal transmission power of the power amplifier is adjusted in a preset first power adjustment manner to increase the signal transmission power of the wireless barbecue thermometer.

[0011] By adopting the above technical solution, when it is determined that the wireless barbecue thermometer is in use, it can be further determined whether the wireless barbecue thermometer is in a signal shielding state based on the change in ambient temperature, and when it is determined that the wireless barbecue thermometer is in a signal shielding state, it is determined to increase the signal transmission power of the power amplifier. In this way, the signal transmission power can be automatically adjusted in combination with the shielding state, thereby reducing the impact of signal shielding on the signal transmission of the wireless barbecue thermometer, which can help improve the user experience.

[0012] Optionally, the wireless barbecue thermometer further includes a high-frequency signal transmitter and a frequency calibration receiver connected to the controller signal, and the food temperature sensor is connected to the power amplifier through the high-frequency signal generator; when it is determined that the wireless barbecue thermometer is in a signal shielding state, it further includes:

[0013] Controlling the frequency calibration receiver to turn on;

[0014] Acquiring a frequency calibration signal received by the frequency calibration receiver;

[0015] Determining whether the wireless barbecue thermometer has a frequency deviation based on the frequency calibration signal;

[0016] When it is determined that the wireless barbecue thermometer has a frequency deviation, the signal transmission frequency of the high-frequency signal transmitter is adjusted, and the process of obtaining the calibration signal received by the calibration receiver is returned to execute, and determining whether the wireless barbecue thermometer has a frequency deviation based on the calibration signal.

[0017] By adopting the above technical solution, the signal transmission frequency of the high-frequency signal transmitter can be adjusted when the wireless barbecue temperature is determined based on the calibration signal, that is, when there is a frequency deviation. This can help ensure the stability of the actual signal transmission frequency of the wireless barbecue thermometer in different environments, and thus help improve the user experience.

[0018] Optionally, the adjusting the signal transmission power of the power amplifier in a preset first power adjustment manner further includes:

[0019] Determining a power adjustment amplitude based on the signal strength of the frequency calibration signal;

[0020] The signal transmission power of the power amplifier is adjusted by the power adjustment amplitude in the first power adjustment manner.

[0021] By adopting the above-mentioned technical scheme, when it is determined that signal shielding exists, the power adjustment amplitude can be determined based on the signal strength of the calibration signal, and the signal transmission power adjustment amplitude of the power amplifier can be adjusted. In this way, the signal shielding situation can be predicted based on the strength of the calibration signal, which can help improve the accuracy of the signal transmission power adjustment.

[0022] Optionally, the determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor includes:

[0023] Determining whether a temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold;

[0024] In the case where the temperature difference is less than or equal to the temperature difference threshold, determining whether the food temperature is greater than a preset first temperature threshold;

[0025] When the food temperature is greater than the first temperature threshold, monitoring the change of the food temperature;

[0026] Whether the wireless barbecue thermometer is in use is determined based on the change in the temperature of the food.

[0027] By adopting the above technical solution, when the difference between the food temperature and the ambient temperature is small and the food temperature is in a normal state, it can be further determined whether the wireless barbecue thermometer is in use based on the change in food temperature. This can help improve the accuracy of the judgment result of the use status of the wireless barbecue thermometer.

[0028] Optionally, after determining whether the temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold, the method further includes:

[0029] In the case where the temperature difference is greater than the temperature difference threshold, determining whether the ambient temperature is greater than a preset second temperature threshold;

[0030] When the ambient temperature is less than or equal to the second temperature threshold, monitoring the change of the temperature difference;

[0031] Whether the wireless barbecue thermometer is in use is determined based on the change of the temperature difference.

[0032] By adopting the above technical solution, when the difference between the food temperature and the ambient temperature is small and the ambient temperature is low, the usage status of the wireless barbecue thermometer can be determined by further combining the change in the temperature difference between the food temperature and the ambient temperature. This can help improve the accuracy of the judgment results of the usage status of the wireless barbecue thermometer.

[0033] Optionally, determining whether the wireless barbecue thermometer is in a signal shielding state based on the change of the ambient temperature includes:

[0034] Determining whether the rising speed of the ambient temperature is greater than a preset rising speed threshold;

[0035] In the case where the rising speed of the ambient temperature is greater than the rising speed threshold, determining whether the fluctuation amplitude of the ambient temperature within a preset first monitoring time period is greater than a preset fluctuation amplitude threshold;

[0036] When the fluctuation amplitude is greater than the fluctuation amplitude threshold, determining that the wireless barbecue thermometer is in a signal shielding state;

[0037] In a case where the fluctuation amplitude is less than or equal to the fluctuation amplitude threshold, determining whether the ambient temperature is greater than a preset third temperature threshold;

[0038] When the ambient temperature is greater than the third temperature threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state.

[0039] By adopting the above technical solution, it is possible to comprehensively judge whether the wireless barbecue thermometer is in a signal shielding state by combining the ambient temperature rising speed, the fluctuation amplitude of the ambient temperature within the first monitoring period, and the size of the ambient temperature. In this way, the influence of factors of different dimensions can be taken into account in the process of judging the shielding state, which can help improve the accuracy of the shielding state judgment.

[0040] Optionally, after determining whether the ambient temperature is greater than a preset third temperature threshold, the method further includes:

[0041] When the ambient temperature is equal to or greater than the third temperature threshold, monitoring the temperature difference between the ambient temperature and the food temperature;

[0042] Determine whether the change amplitude of the temperature difference within the preset second monitoring time period is greater than a preset change amplitude threshold;

[0043] When the change amplitude is greater than the change amplitude threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state.

[0044] By adopting the above technical solution, when the environment is less than or equal to the third temperature threshold, the relationship between the change temperature of the temperature difference between the ambient temperature and the food temperature within the second monitoring period and the change amplitude threshold can be further combined to determine whether the wireless barbecue thermometer is in the shielding state. This can help improve the accuracy of the state judgment of the wireless barbecue thermometer.

[0045] Optionally, when it is determined that the wireless barbecue thermometer is in a signal shielding state, the method further includes:

[0046] Monitoring the change of the ambient temperature;

[0047] In the case where the ambient temperature is monitored to be decreasing, determining whether the decreasing speed of the ambient temperature is greater than a preset decreasing speed threshold;

[0048] In a case where the descent speed is greater than the descent speed threshold, determining whether the ambient temperature rises within a preset third monitoring time period;

[0049] In the case where the ambient temperature does not rise, determining that the wireless barbecue thermometer is in a released signal shielding state;

[0050] When it is determined that the wireless barbecue thermometer has released the signal shielding state, the signal transmission power of the power amplifier is adjusted in a preset second frequency adjustment manner to reduce the signal transmission power of the wireless barbecue thermometer.

[0051] By adopting the above-mentioned technical solution, when it is monitored that the falling rate of the ambient temperature is greater than the falling rate threshold, it can be further determined whether to release the signal shielding state based on whether the ambient temperature rises within the third monitoring period. This can help avoid the influence of the temporary lifting of the signal shielding state on the judgment of the signal shielding state, and thus help improve the accuracy of the judgment of the signal shielding state.

[0052] In a second aspect, the present application provides a wireless barbecue thermometer, which adopts the following technical solution:

[0053] A wireless barbecue thermometer, comprising a controller, a food temperature sensor, an environment temperature sensor, a high-frequency signal transmitter and a power amplifier connected to the controller signal, wherein the food temperature sensor is connected to the power amplifier via the high-frequency signal transmitter;

[0054] The food temperature sensor comprises a temperature probe, wherein the temperature probe is used to contact with the food to measure the temperature of the food;

[0055] The environmental temperature sensor is used to measure the temperature of the environment where the wireless barbecue thermometer is located;

[0056] The power amplifier is used to increase the power of signal transmission;

[0057] The high-frequency signal transmitter is used to output a high-frequency signal;

[0058] The controller is used to execute any one of the wireless barbecue thermometer signal transmission control methods provided in the first aspect.

[0059] Optionally, the wireless barbecue temperature also includes a first frequency calibration receiver and a second frequency calibration receiver connected to the controller signal;

[0060] The first frequency calibration receiver is used to receive a signal higher than a preset center frequency;

[0061] The second frequency calibration receiver is used to receive a signal lower than the center frequency.

[0062] In summary, the present application includes at least one of the following beneficial technical effects:

[0063] 1. Since it is possible to judge whether the wireless barbecue thermometer is in a signal shielding state in combination with the change of ambient temperature, and to realize automatic adjustment of the signal transmission power in combination with the shielding state, the influence of signal shielding on the signal transmission of the wireless barbecue thermometer can be reduced, which can help improve the user experience;

[0064] 2. Since the transmission power will be increased only when it is determined that the wireless barbecue thermometer is in a signal shielding state, this can help to reasonably control the power consumption of the wireless barbecue thermometer signal transmission process, which can help to ensure signal transmission while taking into account the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a structural schematic diagram of a wireless barbecue thermometer provided in an embodiment of the present application;

[0066] Figure 2 It is a flow chart of a wireless barbecue thermometer signal transmission control method provided in an embodiment of the present application;

[0067] Figure 3 It is a flow chart of another wireless barbecue thermometer signal transmission control method provided in an embodiment of the present application;

[0068] Figure 4 It is a flowchart of a method for determining a usage status provided in an embodiment of the present application;

[0069] Figure 5 It is a flow chart of a signal shielding state determination method provided in an embodiment of the present application;

[0070] Figure 6 It is a flow chart of another wireless barbecue thermometer signal transmission control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-6 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0072] The present application embodiment provides a wireless barbecue thermometer. Figure 1 The wireless barbecue thermometer 100 includes a food temperature sensor 120 , an environment temperature sensor 130 , and a power amplifier 140 , which are signal-connected to a controller 110 . The food temperature sensor 120 is also signal-connected to the power amplifier 140 .

[0073] Wherein, the food temperature sensor 120 includes a temperature probe. The temperature probe is used to contact with the food to measure the temperature of the food. In one example, the temperature probe of the food temperature sensor is inserted into the food during use to better collect the food temperature.

[0074] The environment temperature sensor 130 is used to measure the temperature of the environment in which the wireless barbecue thermometer 100 is located. When in use, the environment temperature sensor is generally not in contact with food. In one example, the environment temperature sensor 130 is disposed inside the housing of the wireless barbecue thermometer 100, and an opening matching the sensing component of the environment temperature sensor 130 is disposed on the housing of the wireless barbecue thermometer 100, so that the environment temperature sensor 130 can be protected by the housing while being able to collect the environment temperature.

[0075] The power amplifier 140 is used to increase the power of signal transmission. In this embodiment, the signal transmission power of the power amplifier 140 can be adjusted, for example, under the control of the controller 110.

[0076] Furthermore, the wireless barbecue thermometer 100 further includes a high-frequency signal transmitter 150 and a frequency calibration receiver 160 connected to the controller 110, and the food temperature sensor 120 is connected to the power amplifier 140 via the high-frequency signal generator 150. In actual implementation, the ambient temperature sensor 130 can also be connected to the power amplifier 140 via the high-frequency signal generator 150, so that the wireless barbecue thermometer 100 can output not only the food temperature but also the ambient temperature.

[0077] The high-frequency signal transmitter 150 is used to output a high-frequency signal. In one example, the signal output frequency of the high-frequency signal transmitter 150 can be adjusted. In actual implementation, the high-frequency signal transmitter 150 is also connected to an anti-interference encoder. The anti-interference encoder is used to encode the signal to prevent signal interference between devices.

[0078] The frequency calibration receiver 160 is used to receive the frequency calibration signal. In one example, the frequency calibration receiver 160 includes a first frequency calibration receiver 161 and a second frequency calibration receiver 162; the first frequency calibration receiver 161 is used to receive signals higher than a preset center frequency; the second frequency calibration receiver 162 is used to receive signals lower than the center frequency. In actual implementation, the center frequency can be the designed signal transmission frequency of the wireless barbecue thermometer 100. In this way, the relationship between the actual signal transmission frequency and the center frequency of the wireless barbecue thermometer 100 can be determined based on the signal strength received by the first frequency calibration receiver 161 and the signal strength received by the second frequency calibration receiver 162. In one example, the signal receiving range of the first frequency calibration receiver 161 is from the center frequency to the center frequency + 35KHZ; the signal receiving range of the second frequency calibration receiver 162 is from the center frequency - 35HZ to the center frequency.

[0079] In actual implementation, the food temperature sensor 120 and the ambient temperature sensor 130 are connected to the high-frequency signal generator 150 through a data collector. The data collector can modulate (for example, FSK modulation) the data collected by the temperature sensor, the data of the device itself (for example, power level, etc.), and output a waveform for transmission.

[0080] In one example, the controller 110 includes an environment determination module 111 and a frequency modulation control module 112. The environment determination module 111 is respectively connected to the food temperature sensor 120, the environment temperature sensor 130 and the frequency calibration receiving switch signal, and the frequency calibration receiving switch is used to control the opening or closing of the frequency calibration receiver 160, for example: controlling the power on or off of the frequency calibration receiver 160. The input end of the frequency modulation control module 112 is connected to the signal output end of the frequency calibration receiver 160, and the output end of the frequency modulation control module 112 is respectively connected to the high-frequency signal generator 150 and the power amplifier 140 signal.

[0081] The embodiment of the present application also discloses a wireless barbecue thermometer signal transmission control method, which is described in this embodiment by taking the method used in the controller of the wireless barbecue thermometer provided in the above embodiment as an example. In actual implementation, the wireless barbecue thermometer signal transmission control method provided in this application can also be applied to other types of wireless thermometers, and this embodiment does not limit the use scenario of the wireless barbecue thermometer signal transmission control method.

[0082] refer to Figure 2, a wireless barbecue thermometer signal transmission control method comprises the following steps:

[0083] Step 201, determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor.

[0084] The use state refers to: the wireless barbecue thermometer monitors the temperature of the food being heated. Since the food temperature and the ambient temperature of the environment in which the food is located will increase during the heating process, and the changes of the two may be different, it can be determined whether the wireless barbecue thermometer is in use based on the food temperature and the ambient temperature.

[0085] Generally speaking, during the heating process, the ambient temperature will rise first, and then the food temperature will rise. Therefore, in one example, when the difference between the ambient temperature and the food temperature is greater than a preset minimum temperature difference, it can be determined that the wireless barbecue thermometer is in use; when the difference between the ambient temperature and the food temperature is less than or equal to the minimum temperature difference, it can be determined that the wireless barbecue thermometer is not in use. In one example, the minimum temperature difference is 10 degrees.

[0086] Optionally, if it is determined based on step 201 that the wireless barbecue thermometer is not in use, step 201 is continued until it is determined that the wireless barbecue thermometer is in use. That is, after it is determined that the wireless barbecue thermometer is in use, step 201 is no longer performed.

[0087] Step 202: when it is determined that the wireless barbecue thermometer is in use, determine whether the wireless barbecue thermometer is in a signal shielding state based on changes in ambient temperature.

[0088] The signal shielding state refers to a state where the wireless signal transmission is blocked. Specifically, in a typical cooking scenario, the cook may use a stove cover to cover the cooking cavity in order to heat the food better. For example, in a barbecue scenario, the user covers the barbecue stove cover. At this time, the existence of the stove cover will affect the transmission of the wireless signal, thereby causing the wireless barbecue thermometer to be in a signal shielding state.

[0089] However, during the research process, it was found that when the wireless barbecue thermometer is in a shielded state, the cooking cavity is usually closed, which causes the ambient temperature to change at a faster rate. Therefore, by monitoring the changes in ambient temperature, it is possible to better determine whether the wireless barbecue thermometer is in a signal shielded state.

[0090] In one example, when the rise of the ambient temperature within a preset time reaches a preset rise threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state. In one example, the preset time is 5 minutes and the rise threshold is 80 degrees Celsius.

[0091] Optionally, if it is determined based on step 202 that the wireless barbecue thermometer is not in the signal shielding state, step 201 is continued until it is determined that the wireless barbecue thermometer is in the signal shielding state. That is, after it is determined that the wireless barbecue thermometer is in the signal shielding state, step 201 is no longer performed.

[0092] Step 203: When it is determined that the wireless barbecue thermometer is in a signal shielding state, the signal transmission power of the power amplifier is adjusted in a preset first power adjustment manner to increase the signal transmission power of the wireless barbecue thermometer.

[0093] The first power adjustment method is to increase the signal transmission power of the power amplifier.

[0094] In one example, adjusting the signal transmission power of the power amplifier in a preset first power adjustment manner includes: increasing the signal transmission power of the power amplifier by a preset amplitude based on the default power. In one example, the preset amplitude is 3DB.

[0095] In another example, the signal transmission power of the power amplifier is adjusted in a preset first power adjustment mode, including: determining the dynamic amplitude based on the speed of change of the ambient temperature; increasing the dynamic amplitude of the signal transmission power of the power amplifier on the basis of the default power. In this way, the dynamic adjustment of the signal transmission power can be achieved, thereby improving the accuracy of the transmission power adjustment.

[0096] Specifically, the change speed can be divided into several speed intervals, and the dynamic amplitude corresponding to each speed interval is preset. In the actual judgment process, the dynamic amplitude corresponding to the speed interval to which the change speed belongs is determined as the dynamic amplitude corresponding to the change speed.

[0097] In one example, the rate of change is calculated with a five-minute period. Within five minutes, when the rising rate of the ambient temperature is greater than or equal to 120 and less than 130, the dynamic amplitude is 3DB; when the rising rate of the ambient temperature is greater than or equal to 130 and less than 140, the dynamic amplitude is 6DB; when the rising rate of the ambient temperature is greater than or equal to 140, the dynamic amplitude is 10DB.

[0098] The implementation principle of a wireless barbecue thermometer signal transmission control method in an embodiment of the present application is as follows: determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor; determining whether the wireless barbecue thermometer is in a signal shielding state based on the change of the ambient temperature when the wireless barbecue thermometer is determined to be in use; adjusting the signal transmission power of the power amplifier in a preset first power adjustment mode when the wireless barbecue thermometer is determined to be in a signal shielding state. By adopting the above technical solution, when it is determined that the wireless barbecue thermometer is in use, it can be further determined whether the wireless barbecue thermometer is in a signal shielding state based on the change of the ambient temperature, and when it is determined that the wireless barbecue thermometer is in a signal shielding state, it is determined to increase the signal transmission power of the power amplifier, so that the automatic adjustment of the signal transmission power can be realized in combination with the shielding state, thereby reducing the influence of signal shielding on the signal transmission of the wireless barbecue thermometer, and further helping to improve the user experience.

[0099] In addition, since the transmission power is increased only when it is determined that the wireless barbecue thermometer is in a signal shielding state, this can help to reasonably control the power consumption of the wireless barbecue thermometer signal transmission process, which can help to ensure signal transmission while taking into account the service life of the product.

[0100] In addition, since it is possible to determine whether the wireless barbecue thermometer is in use based on the food temperature and the ambient temperature, and only when it is determined that the wireless barbecue thermometer is in use, the change in ambient temperature can be further used to determine whether to adjust the signal transmission power. This can help reduce monitoring costs and also help improve the accuracy of transmission power adjustment.

[0101] In some embodiments, the wireless barbecue thermometer further includes a high-frequency signal transmitter and a frequency calibration receiver connected to the controller signal, and the food temperature sensor is connected to the power amplifier via the high-frequency signal generator.

[0102] During actual use, it was found that there are component errors in the high-frequency signal transmitter, and the component errors may be affected by environmental factors. This may cause the signal transmission frequency of the wireless barbecue thermometer to be significantly different from the designed signal transmission frequency in different usage environments, resulting in weak or even no signal being received, which in turn affects the user experience.

[0103] In order to help solve the above problems, in some embodiments, the following technical solutions are further provided. Figure 2In step 102, when it is determined that the wireless barbecue thermometer is in a signal shielding state, the method further includes:

[0104] Step 301, control the frequency calibration receiver to start.

[0105] Optionally, the calibration receiver is connected to the controller signal via the calibration receiving switch, so that the controller can control the opening and closing of the calibration receiver via the calibration receiving switch. In actual implementation, the controller can also directly control the signal reception of the calibration receiver.

[0106] In one example, the frequency calibration receiver includes a first frequency calibration receiver and a second frequency calibration receiver. The first frequency calibration receiver is used to receive signals higher than a preset center frequency; the second frequency calibration receiver is used to receive signals lower than the center frequency. At this time, it is necessary to simultaneously control the opening and closing of the first frequency calibration signal receiver and the second frequency calibration signal receiver, for example: the first frequency calibration signal receiver and the second frequency calibration signal receiver are controlled by the same switch.

[0107] Step 302: Acquire a frequency calibration signal received by a frequency calibration receiver.

[0108] The frequency calibration signal may be represented by signal strength and / or frequency range.

[0109] In one example, the calibration receiver includes a first calibration signal receiver and a second calibration signal receiver. At this time, since the frequency ranges that can be received by the first calibration signal receiver and the second calibration signal receiver are different and are associated with the center frequency, only the strength of the calibration signal can be considered, that is, the strength of the first calibration signal received by the first calibration signal receiver and the strength of the second calibration signal received by the second calibration signal receiver.

[0110] Step 303: determining whether the wireless barbecue thermometer has a frequency deviation based on the frequency calibration signal.

[0111] In one example, the calibration signal includes the first signal strength received by the first calibration signal receiver and the second signal strength received by the second calibration signal receiver. Accordingly, determining whether the wireless barbecue thermometer has a frequency deviation based on the calibration signal includes: determining whether the absolute value of the difference between the first signal strength and the second signal strength is less than a preset strength difference threshold; if so, determining that there is no frequency deviation; if not, determining that there is a frequency deviation. Further, in the case of determining that there is a frequency deviation, determining whether the first signal strength is greater than the second signal strength; if so, determining that the actual signal transmission frequency is too large; if not, determining that the actual signal transmission frequency is too small.

[0112] In another example, determining whether the wireless barbecue thermometer has a frequency deviation based on the calibration signal includes: determining whether the absolute value of the difference between the center frequency corresponding to the frequency range of the calibration signal and the design signal transmission frequency of the wireless barbecue thermometer is less than a preset frequency difference threshold; if so, determining that there is no frequency deviation; if not, determining that there is no frequency deviation. Further, in the case of determining that there is a frequency deviation, determining whether the center frequency corresponding to the frequency range is less than the design signal transmission frequency; if so, determining that the actual signal transmission frequency is too large; if not, determining that the actual signal transmission frequency is too small.

[0113] Step 304, when it is determined that the wireless barbecue thermometer has a frequency deviation, the signal transmission frequency of the high-frequency signal transmitter is adjusted, and the process returns to execute the calibration signal received by the calibration receiver, and determines whether the wireless barbecue thermometer has a frequency deviation based on the calibration signal, that is, returns to execute steps 302 and 303.

[0114] Specifically, the signal transmission frequency of the high-frequency signal transmitter is adjusted, including: increasing or decreasing the signal transmission frequency. The specific adjustment method of the signal transmission frequency is determined based on the frequency deviation direction of the wireless barbecue thermometer, that is, when the actual signal transmission frequency is too large, the signal transmission frequency of the high-frequency signal transmitter is reduced, and when the actual signal transmission frequency is too small, the signal transmission frequency of the high-frequency signal transmitter is increased. The specific determination method of the frequency deviation direction is detailed in the embodiment corresponding to the above step 303.

[0115] In one example, the signal transmission frequency is increased or decreased by a preset amplitude (eg, 1 KHZ).

[0116] In actual implementation, the adjustment range of the signal transmission power may also be determined in combination with the difference between the actual signal transmission frequency and the designed signal transmission frequency, which may help improve the accuracy of the frequency adjustment.

[0117] Furthermore, in the above step 201, after determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor, it also includes: if it is determined that the wireless barbecue thermometer is not in use, determining whether the high-frequency signal transmitter is initialized; if the high-frequency signal transmitter is not initialized, initializing the signal transmission frequency of the high-frequency signal transmitter based on preset calibration parameters. The calibration parameters are obtained by calibrating the high-frequency signal transmitter under a normal use environment (such as normal temperature). In this way, the high-frequency signal transmitter can be directly set using the preset calibration parameters in a normal use environment without real-time calibration, which can help reduce the energy consumption of the wireless barbecue thermometer and extend the service life of the wireless barbecue thermometer.

[0118] In the above implementation, when it is determined that the wireless barbecue thermometer is in a signal shielding state, the calibration signal receiver can be controlled to receive the calibration signal, and when it is determined based on the calibration signal that the wireless barbecue temperature has a frequency deviation, the signal transmission frequency of the high-frequency signal transmitter can be adjusted. This can help ensure the stability of the actual signal transmission frequency of the wireless barbecue thermometer in different environments, and thus help improve the user experience.

[0119] Based on the above implementation mode, further, continue to refer to Figure 3 In the above step 203, adjusting the signal transmission power of the power amplifier in a preset first power adjustment manner includes the following steps:

[0120] Step 305: determine the power adjustment amplitude based on the signal strength of the frequency calibration signal.

[0121] Specifically, in the presence of shielding, the strength of the calibration signal is not only related to the signal transmission power, but also to the shielding effect of the shielding object (such as the furnace cover) on the signal. Generally speaking, the shielding object will generally cause the signal to be reflected, and the more signals the shielding object reflects, the better the shielding effect, the greater the strength of the calibration signal, and the less signal is actually effectively transmitted. Therefore, the signal shielding effect can be estimated based on the signal strength of the calibration signal, and then the power adjustment range can be determined.

[0122] Optionally, when the frequency calibration receiver includes multiple frequency calibration receivers, the signal strength of the frequency calibration signal in step 305 is the sum of the signal strengths of the frequency calibration signals received by different frequency calibration receivers. For example, when the frequency calibration receiver includes a first frequency calibration receiver and a second frequency calibration receiver, the signal strength of the frequency calibration signal is the sum of the signal strength of the first frequency calibration signal and the signal strength of the second frequency calibration signal.

[0123] In one example, determining the power adjustment amplitude based on the signal strength of the frequency calibration signal includes: determining the power adjustment amplitude based on the strength difference between the signal strength and a reference strength corresponding to the current signal transmission power.

[0124] The reference strength corresponding to the signal transmission power refers to the signal strength of the calibration signal that can be received when the signal is transmitted at the signal transmission power without shielding. The reference strengths corresponding to different signal transmission powers are preset and can be obtained through pre-testing.

[0125] In one example, at least two power adjustment ranges are preset, each corresponding to a different strength difference interval. The strength difference interval is obtained by dividing the value range of the signal strength. At this time, the power adjustment range can be determined by the strength difference interval to which the signal strength of the calibration signal belongs.

[0126] In the above technical solution, since the reference strength corresponding to the transmission power can be deducted, this can help eliminate the influence of the signal transmission power on the signal strength, and further help improve the accuracy of the adjustment amplitude calculation.

[0127] Step 306: adjust the signal transmission power of the power amplifier by a preset adjustment range in a first power adjustment manner.

[0128] In one example, the signal transmission power of the power amplifier is adjusted in a first power adjustment manner, including: increasing the signal transmission power of the wireless barbecue thermometer by a preset amplitude based on a default power.

[0129] In the above implementation, when it is determined that signal shielding exists, the power adjustment amplitude can be determined based on the signal strength of the calibration signal, and the signal transmission power adjustment amplitude of the power amplifier can be adjusted. In this way, the signal shielding situation can be predicted based on the strength of the calibration signal, which can help improve the accuracy of the signal transmission power adjustment.

[0130] In some embodiments, reference Figure 4 Step 201, based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor, determines whether the wireless barbecue thermometer is in use, including the following steps:

[0131] Step 401, determining whether the temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold.

[0132] In one example, the temperature difference threshold is 10 degrees Celsius.

[0133] Step 402: When the temperature difference is less than or equal to the temperature difference threshold, determine whether the food temperature is greater than a preset first temperature threshold.

[0134] Among them, the first temperature threshold is set based on the temperature of the food in its natural state, where the natural state is relative to the state after being refrigerated or frozen. Generally speaking, the temperature of food will be slightly lower than the temperature of the environment in which it is located. However, since food (especially meat) may be refrigerated or frozen during storage, it was found during the research process that the initial temperature of the food will affect the judgment of the use status of the wireless barbecue thermometer. Based on this, in this embodiment, the initial state of the food is judged in combination with the food temperature, that is, when the food temperature is less than or equal to the first temperature threshold, the initial state of the food is determined to be a refrigerated and frozen state, and when the food temperature is greater than the first temperature threshold, the initial state of the food is determined to be a natural state.

[0135] In one example, the first temperature threshold is preset when the device leaves the factory, for example, the first temperature threshold is 10 degrees Celsius. Further, considering that the temperature in different regions and seasons may be different, the first temperature threshold can be adjusted based on the data actually collected by the wireless barbecue thermometer, for example, when the wireless barbecue thermometer is turned on, whether the difference between the food temperature and the ambient temperature that can be collected is less than a preset temperature error value (for example, 2 degrees Celsius); if so, determine whether the ambient temperature is less than a preset maximum natural ambient temperature (for example, 40 degrees Celsius); if so, subtract a preset temperature adjustment coefficient (for example, 10 degrees Celsius) from the ambient temperature to obtain the first temperature threshold.

[0136] Optionally, when the temperature difference is less than or equal to the temperature difference threshold, it can be directly determined that the wireless barbecue thermometer is in use, or it can be further determined based on other methods whether the wireless barbecue thermometer is in use.

[0137] Step 403: When the food temperature is greater than the first temperature threshold, monitor the change of the food temperature.

[0138] In one example, when the food temperature is less than or equal to the first temperature threshold, it can be directly determined that the wireless grill thermometer is not in use.

[0139] Step 404: determine whether the wireless barbecue thermometer is in use based on the change in food temperature.

[0140] Optionally, determining whether the wireless barbecue thermometer is in use based on the change in food temperature includes: determining whether the rising speed of the food temperature is greater than or equal to a preset food temperature speed threshold; if so, determining that the wireless barbecue thermometer is in use. In one example, the food temperature speed threshold is 1 degree Celsius per minute.

[0141] Furthermore, when the rising speed of the food temperature is less than the rising speed threshold, it can be determined whether the temperature rising amplitude of the food temperature within the latest preset reference time is greater than the preset food temperature amplitude threshold; if so, it is determined that the wireless barbecue thermometer is in use; if not, it is determined that the wireless barbecue thermometer is not in use. In one example, the reference time is 5 minutes and the amplitude threshold is 2 degrees.

[0142] In actual implementation, in the above technical solution, when it is determined that the rising speed of the food temperature is less than the rising speed threshold, it can also be directly determined that the wireless barbecue thermometer is not in use.

[0143] In the above implementation, since the difference between the food temperature and the ambient temperature is small and the food temperature is in a normal state, it can be further determined whether the wireless barbecue thermometer is in use based on the change in food temperature. This can help to judge the use of the wireless barbecue thermometer in some slow heating scenarios, and further help to improve the accuracy of the judgment result of the use status of the wireless barbecue thermometer.

[0144] Based on the above implementation, continue to refer to Figure 4 Further, after determining in step 401 whether the temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold, the following steps are also included:

[0145] Step 405: When the temperature difference is greater than the temperature difference threshold, determine whether the ambient temperature is greater than a preset second temperature threshold.

[0146] Specifically, the temperature difference being greater than the temperature difference threshold may be caused by heating the food, or may be caused by refrigeration or freezing of the food, and as mentioned in the above embodiment, the initial state of the food will affect the determination of the use state of the wireless barbecue thermometer. Based on this, in this embodiment, whether the food is being heated is determined in combination with the ambient temperature.

[0147] Step 406: When the ambient temperature is less than or equal to the second temperature threshold, monitor the change of the temperature difference.

[0148] The second temperature threshold is determined based on the highest ambient temperature in the natural state. In one example, the second temperature is slightly higher than the highest ambient temperature in the natural state, for example, the second temperature threshold is 50 degrees Celsius.

[0149] Optionally, when it is determined that the ambient temperature is greater than the second temperature threshold, it can be directly determined that the wireless barbecue thermometer is in use.

[0150] Step 407: determining whether the wireless barbecue thermometer is in use based on the change in the temperature difference.

[0151] Optionally, determining whether the wireless barbecue thermometer is in use based on a change in the temperature difference includes: determining whether the temperature difference increases; and determining that the wireless barbecue thermometer is in use when it is determined that the temperature difference increases.

[0152] Further, when it is determined that the temperature difference has not increased, it is further determined whether the rising speed of the ambient temperature is greater than a preset ambient temperature speed threshold; if so, it is determined that the wireless barbecue thermometer is in use; if not, it is determined that the wireless barbecue thermometer is not in use. In one example, the ambient temperature speed threshold is 2 degrees Celsius per minute.

[0153] In actual implementation, in the above technical solution, when it is determined that the temperature difference has not increased, it can be determined that the wireless barbecue thermometer is not in use.

[0154] In the above implementation, since the use status of the wireless barbecue thermometer can be determined by further combining the change in the temperature difference between the food temperature and the ambient temperature when the difference between the food temperature and the ambient temperature is small and the ambient temperature is low, this can help avoid the problem of misjudgment caused by the large temperature difference between refrigerated and frozen food and the ambient temperature, and thus can help improve the accuracy of the use status judgment result of the wireless barbecue thermometer.

[0155] In some embodiments, reference Figure 5 In step 202, determining whether the wireless barbecue thermometer is in a signal shielding state based on the change of the ambient temperature includes the following steps:

[0156] Step 501, determining whether the rising speed of the ambient temperature is greater than a preset rising speed threshold.

[0157] Specifically, when the wireless barbecue thermometer is in the shielding state, the cooking cavity is usually closed, which causes the ambient temperature to change at a faster speed. Therefore, the first speed can be combined to determine whether the wireless barbecue thermometer is in the shielding state.

[0158] In one example, the rising rate threshold is 20 degrees Celsius per minute.

[0159] Step 502: When the rising speed of the ambient temperature is greater than the rising speed threshold, determine whether the fluctuation amplitude of the ambient temperature within a preset first monitoring time period is greater than a preset fluctuation amplitude threshold.

[0160] The fluctuation amplitude refers to the difference between the ambient temperature at the end of the first monitoring period and the ambient temperature at the beginning of the first monitoring period.

[0161] The fluctuation amplitude threshold corresponds to the first monitoring duration. In actual implementation, the fluctuation amplitude threshold is less than the product of the first monitoring duration and the rising speed threshold. In one example, the fluctuation amplitude threshold is 5 minutes, and the fluctuation amplitude is 80 degrees Celsius.

[0162] Specifically, during the research process, it was found that in addition to entering the shielding state, there are other factors that may cause the ambient temperature to change at a larger rate, such as: starting heating, periodic heating of the heating component, etc. These will affect the accuracy of judging the shielding state based on the temperature rise rate. Therefore, in this embodiment, when the rising rate of the ambient temperature is greater than the rising rate threshold, the fluctuation amplitude is further combined to judge whether the wireless barbecue thermometer is in the shielding state, which can help improve the accuracy of the shielding state judgment.

[0163] Step 503: When the fluctuation amplitude is greater than the fluctuation amplitude threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state.

[0164] Specifically, when the fluctuation amplitude is greater than the fluctuation amplitude threshold, it means that the ambient temperature has a large change amplitude within the first monitoring period. In this way, it can be verified that the wireless barbecue thermometer is indeed in a closed space, that is, in a shielded state.

[0165] Step 504: When the fluctuation amplitude is less than or equal to the fluctuation amplitude threshold, determine whether the ambient temperature is greater than a preset third temperature threshold.

[0166] Among them, the third temperature threshold is set based on the maximum ambient temperature that can be reached during food processing, and the maximum ambient temperature requires the food processing equipment to be in a closed state (i.e., signal shielding state) to be achieved. In one example, the third temperature threshold is 60%-80% of the maximum ambient temperature. For example, if the maximum ambient temperature is 200 degrees, the third temperature threshold can be 140 degrees. In actual implementation, the wireless barbecue thermometer provides multiple working modes, such as: default, barbecue, air frying, steaming, etc. The third temperature threshold under different working modes is pre-set, and the user can select the working mode of the wireless barbecue thermometer by himself.

[0167] Specifically, when the fluctuation amplitude is less than or equal to the fluctuation amplitude threshold, it may indicate that the ambient temperature change is small, which may be caused by the ambient temperature about to reach the upper limit, or it may be caused by the food processing equipment not being in a shielded state. Therefore, in this embodiment, when the fluctuation amplitude is less than or equal to the fluctuation amplitude threshold, the ambient temperature is further combined to determine whether the wireless barbecue temperature is in a shielded state, which can help improve the accuracy of the judgment state.

[0168] Step 505: When the ambient temperature is greater than the third temperature threshold, determine that the wireless barbecue thermometer is in a signal shielding state.

[0169] Optionally, when the ambient temperature is less than a preset third temperature threshold, it is determined that the wireless barbecue thermometer is not in a signal shielding state.

[0170] In one example, when the rising rate of the ambient temperature is less than or equal to the rising rate threshold, it can also be determined whether the ambient temperature is greater than a third temperature threshold, and when the ambient temperature is greater than the third temperature threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state.

[0171] In the above implementation, it is possible to comprehensively judge whether the wireless barbecue thermometer is in a signal shielding state by combining the rate of increase of the ambient temperature, the fluctuation amplitude of the ambient temperature within the first monitoring period, and the size of the ambient temperature. In this way, the influence of factors of different dimensions can be taken into account in the process of judging the shielding state, which can help improve the accuracy of the judgment of the shielding state.

[0172] For further information, please refer to Figure 5 , step 504, after determining whether the ambient temperature is greater than a preset third temperature threshold, further comprising:

[0173] Step 506: When the ambient temperature is less than or equal to the third temperature threshold, monitor the temperature difference between the ambient temperature and the food temperature.

[0174] Step 507, determining whether the change amplitude of the temperature difference within the preset second monitoring time period is greater than a preset change amplitude threshold.

[0175] The variation range refers to the difference between the temperature difference at the end of the second monitoring period and the temperature difference at the beginning of the second monitoring period.

[0176] The change amplitude threshold corresponds to the second monitoring duration. In actual implementation, the ratio of the change amplitude threshold to the second monitoring duration is less than the ratio of the fluctuation amplitude threshold to the first monitoring duration. Specifically, during the heating process, both the food temperature and the ambient temperature will increase, and the rate of increase of the ambient temperature will be greater than the rate of increase of the food temperature, which is particularly obvious in the shielded state. Therefore, in this embodiment, when the ambient temperature is less than or equal to the third temperature threshold, the change in the temperature difference is further combined to determine whether the wireless barbecue thermometer is in the shielded state, which can help improve the accuracy of the shielding state judgment.

[0177] Step 508: When the change amplitude is greater than the change amplitude threshold, it is determined that the wireless barbecue thermometer is in a signal shielding state.

[0178] Optionally, when the change amplitude is less than or equal to the change amplitude threshold, it is determined that the wireless barbecue thermometer is not in a signal shielding state.

[0179] In the above implementation, since it is possible to determine whether the wireless barbecue thermometer is in the shielding state by further combining the relationship between the change temperature of the temperature difference between the ambient temperature and the food temperature within the second monitoring period and the change amplitude threshold when the environment is less than or equal to the third temperature threshold, the working state of the wireless barbecue thermometer can be judged in combination with the relative change relationship between the food temperature and the ambient temperature, which can help improve the accuracy of the state judgment of the wireless barbecue thermometer.

[0180] In some embodiments, reference Figure 6 In step 203, when it is determined that the wireless barbecue thermometer is in a signal shielding state, the following steps are also included:

[0181] Step 601, monitor the change of ambient temperature.

[0182] Step 602: When the ambient temperature is detected to be decreasing, determine whether the decreasing speed of the ambient temperature is greater than a preset decreasing speed threshold.

[0183] Specifically, at the moment of releasing the shielding state (for example, opening the stove cover), the wireless barbecue thermometer will be in contact with the outside air, so the ambient temperature will drop rapidly. Therefore, it can be determined whether the wireless barbecue thermometer is released from the shielding state by the speed of the ambient temperature drop.

[0184] In one example, the ramp down rate is 30 degrees Celsius per minute.

[0185] It should be noted that when the rate of decrease of the ambient temperature is less than or equal to the rate of decrease threshold, it means that the ambient temperature is slowly decreasing. Since there are many reasons that can cause the ambient temperature to decrease slowly, such as reduced heating power, intermittent heating, etc., in order to help ensure the accuracy of the release judgment, in actual implementation, when the rate of decrease is less than or equal to the rate of decrease threshold, it can be directly judged that the shielding state has not been released, or it can be combined with other factors to jointly judge whether the shielding state is released, such as: determining whether the ambient temperature is lower than the food temperature; if so, it is judged that the shielding state is released.

[0186] Step 602: When the descent speed is greater than the descent speed threshold, determine whether the ambient temperature rises within a preset third monitoring time period.

[0187] Specifically, when the falling speed is greater than the falling speed threshold, it means that the shielding state is released, but the shielding state is released in two cases: temporary release and complete release. Specifically, when the user opens the lid to check the barbecue effect and then closes the lid, the shielding state will be restored after a short release. At this time, if it is judged that the shielding state is released, it may cause the user to be unable to accurately judge the shielding state again after closing the lid, thereby affecting the user's experience.

[0188] Based on this, in this embodiment, when the ambient temperature is monitored to drop rapidly, it is further determined whether the ambient temperature rises within the third monitoring period. In this way, a comprehensive judgment can be made based on the changes in the ambient temperature within the third monitoring period to determine whether the shielding state is completely lifted.

[0189] Step 603: When the ambient temperature does not rise, determine whether the wireless barbecue thermometer is in a signal shielding state.

[0190] Specifically, when the ambient temperature does not rise, it means that the user has not covered the device, and it can be determined that the device has entered the shielding state.

[0191] Optionally, when the ambient temperature is determined to rise, it can be directly determined not to release the signal shielding state, or it can be further determined whether to release the signal shielding state in combination with factors such as the amount of increase in the ambient temperature and / or the continuous change in the ambient temperature.

[0192] Optionally, when it is determined that the wireless barbecue thermometer has not released the signal shielding state, step 601 and step 602 are continued to be performed until the wireless barbecue thermometer is determined to release the signal shielding state. That is, after it is determined that the wireless barbecue thermometer has released the signal shielding state, step 601 and step 602 are no longer performed.

[0193] Further, after determining that the wireless barbecue thermometer has released the signal shielding state, the process returns to step 202 to re-determine whether the wireless barbecue thermometer has entered the signal shielding state.

[0194] Step 604: when it is determined that the wireless barbecue thermometer has released the signal shielding state, the signal transmission power of the power amplifier is adjusted in a preset second frequency adjustment manner to reduce the signal transmission power of the wireless barbecue thermometer.

[0195] In one example, adjusting the signal transmission power of the power amplifier in a preset second frequency adjustment manner includes: adjusting the signal transmission power of the power transmitter to a default power.

[0196] In the above embodiment, when it is monitored that the rate of decrease of the ambient temperature is greater than the rate of decrease threshold, it is further determined whether to release the signal shielding state based on whether the ambient temperature rises within the third monitoring period. This can help avoid the impact of the temporary release of the signal shielding state on the judgment of the signal shielding state, and thus help improve the accuracy of the judgment of the signal shielding state.

[0197] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the instructions of the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise clearly stated in this document, the execution of these steps is not strictly limited in order and can be performed in other orders.

[0198] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A wireless barbecue thermometer signal transmission control method, characterized in that: In a controller for a wireless barbecue thermometer, the wireless barbecue thermometer further comprises a food temperature sensor, an ambient temperature sensor, a high-frequency signal generator, a power amplifier and a frequency calibration receiver connected to the controller signal, the food temperature sensor is connected to the power amplifier via the high-frequency signal generator, and the method comprises: Determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor; When it is determined that the wireless barbecue thermometer is in use, determining whether the rising speed of the ambient temperature is greater than a preset rising speed threshold; In the case where the rising speed of the ambient temperature is greater than the rising speed threshold, determining whether the fluctuation amplitude of the ambient temperature within a preset first monitoring time period is greater than a preset fluctuation amplitude threshold; In a case where the fluctuation amplitude is less than or equal to the fluctuation amplitude threshold, determining whether the ambient temperature is greater than a preset third temperature threshold; When the ambient temperature is less than or equal to the third temperature threshold, monitoring the temperature difference between the ambient temperature and the food temperature; Determine whether the change amplitude of the temperature difference within a preset second monitoring time is greater than a preset change amplitude threshold, and the ratio of the change amplitude threshold to the second monitoring time is less than the ratio of the fluctuation amplitude threshold to the first monitoring time; When the change amplitude is greater than the change amplitude threshold, determining that the wireless barbecue thermometer is in a signal shielding state; When it is determined that the wireless barbecue thermometer is in a signal shielding state, adjusting the signal transmission power of the power amplifier in a preset first power adjustment mode to increase the signal transmission power of the wireless barbecue thermometer; Control the calibration receiver to turn on; obtain the calibration signal received by the calibration receiver; determine whether the wireless barbecue thermometer has a frequency deviation based on the calibration signal; and when it is determined that the wireless barbecue thermometer has a frequency deviation, adjust the signal transmission frequency of the high-frequency signal transmitter.

2. The method according to claim 1, characterized in that After the signal transmission frequency of the high-frequency signal transmitter is adjusted, the method further includes: Return to the step of acquiring the frequency calibration signal received by the frequency calibration receiver, and determining whether the wireless barbecue thermometer has a frequency deviation based on the frequency calibration signal.

3. The method according to claim 1, characterized in that The adjusting the signal transmission power of the power amplifier in a preset first power adjustment manner also includes: Determining a power adjustment amplitude based on the signal strength of the frequency calibration signal; The signal transmission power of the power amplifier is adjusted by the power adjustment amplitude in the first power adjustment manner.

4. The method according to claim 1, characterized in that The determining whether the wireless barbecue thermometer is in use based on the food temperature collected by the food temperature sensor and the ambient temperature collected by the ambient temperature sensor comprises: Determining whether a temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold; In the case where the temperature difference is less than or equal to the temperature difference threshold, determining whether the food temperature is greater than a preset first temperature threshold; When the food temperature is greater than the first temperature threshold, monitoring the change of the food temperature; Whether the wireless barbecue thermometer is in use is determined based on the change in the temperature of the food.

5. The method according to claim 4, characterized in that After determining whether the temperature difference between the food temperature and the ambient temperature is less than or equal to a preset temperature difference threshold, the method further includes: In the case where the temperature difference is greater than the temperature difference threshold, determining whether the ambient temperature is greater than a preset second temperature threshold; When the ambient temperature is less than or equal to the second temperature threshold, monitoring a change in the temperature difference; Whether the wireless barbecue thermometer is in use is determined based on the change of the temperature difference.

6. The method according to claim 1, characterized in that After determining whether the fluctuation amplitude of the ambient temperature within the preset first monitoring time is greater than a preset fluctuation amplitude threshold, the method further includes: if the fluctuation amplitude is greater than the fluctuation amplitude threshold, determining that the wireless barbecue thermometer is in a signal shielding state; After determining whether the ambient temperature is greater than a preset third temperature threshold, the method further includes: when the ambient temperature is greater than the third temperature threshold, determining that the wireless barbecue thermometer is in a signal shielding state.

7. The method according to claim 1, characterized in that In the case where it is determined that the wireless barbecue thermometer is in a signal shielding state, the method further includes: Monitoring the change of the ambient temperature; When the ambient temperature is detected to be decreasing, determining whether the decreasing speed of the ambient temperature is greater than a preset decreasing speed threshold; In a case where the descent speed is greater than the descent speed threshold, determining whether the ambient temperature rises within a preset third monitoring time period; In the case where the ambient temperature does not rise, determining that the wireless barbecue thermometer is in a released signal shielding state; When it is determined that the wireless barbecue thermometer has released the signal shielding state, the signal transmission power of the power amplifier is adjusted in a preset second frequency adjustment manner to reduce the signal transmission power of the wireless barbecue thermometer.

8. A wireless barbecue thermometer, characterized in that: The wireless barbecue thermometer includes a controller, a food temperature sensor, an ambient temperature sensor, a high-frequency signal transmitter, a power amplifier and a frequency calibration receiver connected to the controller signal, and the food temperature sensor is connected to the power amplifier through the high-frequency signal transmitter; The food temperature sensor comprises a temperature probe, wherein the temperature probe is used to contact with the food to measure the temperature of the food; The environmental temperature sensor is used to measure the temperature of the environment where the wireless barbecue thermometer is located; The power amplifier is used to increase the power of signal transmission; The high-frequency signal transmitter is used to output a high-frequency signal; The frequency calibration receiver is used to receive the frequency calibration signal; The controller is used to execute the wireless barbecue thermometer signal transmission control method according to any one of claims 1 to 7.

9. The wireless barbecue thermometer according to claim 8, characterized in that: The frequency calibration receiver includes a first frequency calibration receiver and a second frequency calibration receiver; The first frequency calibration receiver is used to receive a signal higher than a preset center frequency; The second frequency calibration receiver is used to receive a signal lower than the center frequency.

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