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CN-122027997-A - Temperature probe, control method thereof, heat cooking equipment and storage medium

CN122027997ACN 122027997 ACN122027997 ACN 122027997ACN-122027997-A

Abstract

The embodiment of the application provides a temperature probe, a control method thereof and a heat cooking device comprising the temperature probe, wherein the temperature probe comprises a temperature sensor and a radio frequency communication module, the environment where the temperature probe is positioned is determined by detecting the real-time temperature based on the temperature sensor, the radio frequency communication module is controlled to communicate with external equipment by using a first channel where a first center frequency is positioned in a heating environment, the radio frequency communication module is switched to a second channel where a second center frequency is positioned in a normal temperature environment for communication, and the difference value between the first center frequency and the second center frequency is controlled to be within +/-10 percent.

Inventors

  • HUANG ZHANBIN
  • GU JUNYANG

Assignees

  • 深圳市虎一科技有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (10)

  1. 1. A temperature probe for wireless communication in a wide temperature environment, comprising: A temperature sensor configured to detect a real-time temperature of an environment in which the temperature probe is located; The system comprises a radio frequency communication module, a heating environment, a first frequency range, a second frequency range, a radio frequency communication module, a first control module and a second control module, wherein the radio frequency communication module is configured to be capable of communicating with external equipment in a plurality of communication frequency ranges; wherein the first center frequency is within + -10% of the second center frequency and the first center frequency and the second center frequency are not equal.
  2. 2. The temperature probe of claim 1, wherein the first center frequency is located in a first channel, the second center frequency is located in a second channel, and the second channel is different from the first channel.
  3. 3. The temperature probe of claim 1, wherein the first center frequency differs from the second center frequency by no more than ±20kHz.
  4. 4. The temperature probe of claim 1, further comprising: a memory storing at least a temperature-frequency configuration item associated with a temperature; The processor is configured to determine a frequency adjustment parameter corresponding to the real-time temperature according to the real-time temperature detected by the temperature sensor and the temperature-frequency configuration item stored in the memory, and adjust the working frequency of the radio frequency communication module according to the frequency adjustment parameter so that the radio frequency drift of the temperature probe in the working temperature range is not more than +/-20 kHz.
  5. 5. The temperature probe of claim 1, wherein the radio frequency communication module supports SUB-1GHz band communication with a bluetooth band, wherein the SUB-1GHz band comprises at least 433MHz, 868MHz, and 915MHz bands, the bluetooth band comprising a plurality of channels.
  6. 6. A method of controlling a temperature probe, comprising: acquiring the real-time temperature of the environment where the temperature probe is located, and determining the current state of the environment; when the current state is a heating state, the temperature probe is controlled to communicate with external equipment in a first frequency range, wherein the first frequency range has a first center frequency; When the current state is a normal temperature state, the temperature probe is controlled to communicate with external equipment in a second frequency range, wherein the second frequency range has a second center frequency; wherein the first center frequency is within + -10% of the second center frequency and the first center frequency and the second center frequency are not equal.
  7. 7. The method of controlling a temperature probe according to claim 6, further comprising: acquiring a pre-stored temperature-frequency configuration item; determining a frequency adjustment parameter corresponding to the real-time temperature according to the current state and the real-time temperature; And adjusting the working frequency of the radio frequency communication module according to the frequency adjusting parameter so that the radio frequency drift of the temperature probe in the working temperature range is not more than +/-20 kHz.
  8. 8. The method according to claim 7, wherein the frequency adjustment parameter is generated based on real-time temperature and corresponding frequency offset obtained by measuring the temperature probe at least one known temperature point, and pre-calibrated temperature-frequency offset correlation data or mathematical model; the temperature-frequency offset associated data or the mathematical model is established through experimental calibration and is used for describing the mapping relation between temperature change and frequency offset.
  9. 9. A thermal cooking apparatus, comprising: A heating device; A temperature probe according to any one of claims 1 to 5 for monitoring a target temperature when the heating device is in operation; And the main control unit is in wireless communication with the temperature probe and is used for receiving temperature data and controlling the heating device.
  10. 10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer-executable program or instructions for implementing the control method of the temperature probe according to any one of claims 6 to 8 when being executed by a processor.

Description

Temperature probe, control method thereof, heat cooking equipment and storage medium Technical Field The application relates to the technical field of temperature probe radio frequency temperature drift compensation, in particular to a temperature probe, a control method thereof, a heat cooking device and a storage medium. Background The wireless temperature probe, especially the probe applied to the fields of intelligent cooking equipment, industrial process monitoring and the like, needs to keep continuous and stable wireless data connection with the main control unit in a wide temperature environment with alternating high temperature and low temperature. However, when the ambient temperature changes drastically, the characteristics of the rf circuit components inside the probe drift, resulting in a significant shift in the center frequency of the transmission and reception. The frequency offset can directly cause the quality degradation of a communication link, which is manifested by fluctuation of signal strength and increase of data packet loss rate, and communication interruption is often caused under extreme conditions such as high temperature, namely the problem that stable connection cannot be realized under high temperature. The prior art mainly provides two types of solutions to the frequency offset problem caused by the temperature drift. The first is to use hardware compensation, such as a temperature compensation crystal oscillator or a temperature compensation capacitor, which can achieve a certain effect, but introduces high cost of special devices, and the compensation precision is limited by the performance of the devices, so that it is difficult to control the cost and realize high-precision full-temperature area stabilization. The second type is to use software compensation, and the compensation is usually based on a preset and simple temperature-frequency offset linear relation model, so that the method has low cost, but the nonlinear characteristic of radio frequency drift and the individual difference among components cannot be fully considered, the compensation precision is limited, and especially the compensation effect is poor near the high and low temperature limit points, and the reliability of the connection in the whole range from 0 ℃ to 105 ℃ cannot be ensured. In addition, the existing scheme compensates for a single working frequency point, but cannot effectively support joint optimization of SUB-1GHz, 2.4GHz and other multi-frequency bands and SUB-channels thereof, so that the risk of unstable connection of partial channels still exists in actual frequency hopping use of equipment. Disclosure of Invention The application provides a temperature probe, a control method thereof, heat cooking equipment and a storage medium, which are used for solving the technical problem of unstable connection of a wireless temperature probe caused by frequency deviation in a wide temperature environment. In a first aspect, an embodiment of the present application provides a temperature probe for performing wireless communication in a wide temperature environment, including: A temperature sensor configured to detect a real-time temperature of an environment in which the temperature probe is located; The system comprises a radio frequency communication module, a heating environment, a first frequency range, a second frequency range, a radio frequency communication module, a first control module and a second control module, wherein the radio frequency communication module is configured to be capable of communicating with external equipment in a plurality of communication frequency ranges; wherein the first center frequency is within + -10% of the second center frequency and the first center frequency and the second center frequency are not equal. In some embodiments, the first center frequency is located on a first channel, the second center frequency is located on a second channel, and the second channel is different from the first channel. In some embodiments, the first center frequency differs from the second center frequency by no more than ±20kHz. In some embodiments, the temperature probe further comprises: a memory storing at least a temperature-frequency configuration item associated with a temperature; The processor is configured to determine a frequency adjustment parameter corresponding to the real-time temperature according to the real-time temperature detected by the temperature sensor and the temperature-frequency configuration item stored in the memory, and adjust the working frequency of the radio frequency communication module according to the frequency adjustment parameter so that the radio frequency drift of the temperature probe in the working temperature range is not more than +/-20 kHz. In some embodiments, the radio frequency communication module supports communications in the SUB-1GHz band with a bluetooth band, wherein the SUB-1GHz band comprises at least 433MHz, 868MHz,