Radio frequency equipment working control method and system and radio frequency equipment

Abstract

The invention provides a radio frequency equipment work control method and system and radio frequency equipment, a specific absorption rate sensor and a radio frequency antenna are arranged in the radio frequency equipment, state information is generated based on a detection value fed back by the specific absorption rate sensor, and the state information comprises first information and second information; the radio frequency antenna comprises standard conduction power and weak conduction power; the control method comprises the following steps: forcibly generating first information when the radio frequency equipment enters a power-on state from a power-off state; updating state information according to a detection value fed back by the specific absorption rate sensor; when the updating frequency of the state information does not reach a preset first threshold value, controlling the radio frequency equipment to enter a first working mode; when the number of updating times of the state information reaches a preset first threshold value, exiting the first working mode; in the first working mode, the radio frequency antenna works with weak conduction power. Based on the control method, the requirements of special scenes can be met, and the user can be prevented from being limited by performance in daily use.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency device state control, and in particular to a radio frequency device operation control method, system and radio frequency device. Background Art

[0002] With the rapid development of mobile communication technology, radio frequency devices (such as smart phones, tablets, etc.) are widely used in daily life. However, radio frequency devices generate electromagnetic radiation during operation. After the human body absorbs this radiation energy, it may have an impact on health. In order to evaluate and limit the potential impact of radio frequency devices on the human body, the specific absorption rate (SAR) is generally used as a measurement standard internationally. The SAR value indicates the radio frequency energy absorbed by a unit mass of biological tissue per unit time, usually in watts per kilogram (W / kg).

[0003] In order to ensure that the electromagnetic radiation of radio frequency devices meets safety standards, each country has established corresponding regulatory agencies and certification standards. As the official certification body of France, the French National Radio Frequency Authority (Autorité Nationale des Fréquences, ANFR) has put forward new test method requirements for SAR certification since July 1, 2020. According to the new regulations, before conducting a SAR test, the radio frequency device to be tested must be turned off and placed close to a test device that simulates human tissue (simulated human tissue fluid), and then turned on for subsequent SAR test steps. However, the new test requirements bring several technical challenges.

[0004] Specifically, for the traditional SAR trigger mechanism, the RF device is suspended before the test (so that the device defaults to "far away") and turned on. After turning on, the SAR sensor will perform self-calibration to return the Diff value to zero. At this time, during the SAR test, since the device under test is close to the human tissue simulation device, the Diff value detected by the SAR sensor will increase significantly. At this time, the device central processor AP compares the Diff value returned by the SAR sensor with the threshold value and determines that it is in the "close" state. The AP will call the corresponding DSI (interface) to make the Modem call the corresponding weak conduction power (lower than the normal standard transmission power) to complete the subsequent SAR test. If the SAR test is completed, move the object under test away from the simulation device. At this time, the Diff value detected by the SAR sensor will change to the threshold value that the AP judges that the object under test is "far away". At this time, the AP will call the DSI of the standard transmission power, thereby calling the standard conduction power, so as to obtain a better antenna transmission signal.

[0005] However, the new SAR test method stipulated by the ANFR regulations requires that the device be placed close to the simulated device before turning it on. This will cause the SAR sensor of the device under test to calibrate the environmental factors of the simulated device and return the Diff value to zero after the device under test is turned on. At this time, when the SAR test is performed again, the SAR sensor cannot detect the change in the Diff value, and it will report the "far away" state to the AP. The AP calls the corresponding DSI according to the "far away" state, so that the modem calls the standard conducted power to perform SAR regulatory tests. At this time, since the weak conducted power mechanism is not triggered, the SAR test will fail.

[0006] In addition, in order to meet the requirements of the new SAR regulations, RF devices usually need to reduce the conducted power to a level lower than the actual performance level of the device during testing, which directly affects the user's signal experience in actual use and causes a decline in user experience. Summary of the invention

[0007] The object of the present invention is to provide a method, system and radio frequency device for controlling radio frequency equipment operation, which can meet new SAR test requirements while ensuring good performance in actual use.

[0008] In order to achieve the above-mentioned object, the present invention provides a method for controlling the operation of a radio frequency device based on specific absorption rate detection, wherein a specific absorption rate sensor and a radio frequency antenna are provided in the radio frequency device, and state information is generated based on the detection value fed back by the specific absorption rate sensor, wherein the state information includes first information indicating that the radio frequency device is close to a biological body and second information indicating that the radio frequency device is far away from the biological body; the radio frequency antenna includes a standard conduction power corresponding to a normal working state and a weak conduction power corresponding to a test state, wherein the weak conduction power is less than the standard transmission power, and the control method includes: When the radio frequency device enters a power-on state from a power-off state, forcibly generating the first information; Updating the state information according to the detection value fed back by the specific absorption rate sensor; When the number of status information updates does not reach a preset first threshold, control the radio frequency device to enter a first working mode; when the number of status information updates reaches a preset first threshold, exit the first working mode; In the first operating mode, the RF antenna operates with the weak conducted power.

[0009] Preferably, when the number of times the status information is updated reaches a preset first threshold, the radio frequency device is controlled to enter a second working mode; In the second working mode, when the state information is the first information, the RF antenna works with the weak conduction power; and when the state information is the second information, the RF antenna works with the standard conduction power.

[0010] Preferably, if the update frequency of the status information in a unit time period reaches a preset second threshold, or the time of the status information in the first working mode is greater than a third threshold, the radio frequency device is controlled to enter the second working mode.

[0011] Preferably, when the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the first information is generated, and when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the second information is generated, and the first threshold is greater than the second threshold.

[0012] The present invention also provides a radio frequency device, comprising: A radio frequency antenna and a specific absorption rate sensor electrically connected to the radio frequency antenna, wherein the radio frequency antenna includes a standard transmission power corresponding to a normal working state and a weak transmission power corresponding to a test state, wherein the weak transmission power is less than the standard transmission power; A state detection module, the state detection module is used to generate state information based on the detection value fed back by the specific absorption rate sensor, the state information including first information indicating that the radio frequency device is close to the biological body and second information indicating that the radio frequency device is far away from the biological body; a state configuration module, when the radio frequency device enters the power-on state from the power-off state, the state configuration module forcibly configures the state detection module so that the state detection module generates the first information; An updating module, the updating module being used to update the state information according to the detection value fed back by the specific absorption rate sensor; a working mode selection module, wherein when the number of times the status information is updated does not reach a preset first threshold, the working mode selection module controls the radio frequency device to select a first working mode; In the first operating mode, the RF antenna operates with the weak conducted power.

[0013] Preferably, when the number of times the state information is updated reaches a preset first threshold, the working mode selection module controls the radio frequency device to select to enter the second working mode; In the second working mode, when the state information is the first information, the RF antenna works with the weak conduction power; and when the state information is the second information, the RF antenna works with the standard conduction power.

[0014] Preferably, if the update frequency of the status information within a unit time period reaches a preset second threshold, or the time of the status information in the first working mode is greater than a third threshold, the working mode selection module controls the radio frequency device to enter the second working mode.

[0015] Preferably, when the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the status detection module generates the first information; when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the status detection module generates the second information, and the first threshold is greater than the second threshold.

[0016] The present invention also provides a radio frequency equipment operation control system, which comprises: one or more processors; Memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the programs include instructions for executing the radio frequency device operation control method as described above.

[0017] The present invention also provides a computer-readable storage medium, which includes a computer program, and the computer program can be executed by a processor to implement the radio frequency device operation control method as described above.

[0018] Compared with the prior art, the radio frequency device operation control method provided by the above technical solution of the present invention makes a mandatory setting for the SAR trigger mechanism when the radio frequency device enters the power-on state from the off state, that is, it ignores the detection value of the current specific absorption rate sensor and forcibly generates the state information representing the first information of the radio frequency device approaching the biological body. In this way, when the SAR certification test is performed according to the new regulations, the radio frequency device can automatically enter the test mode based on weak conduction power to complete the test. After the test is completed, the test mode can also be automatically exited according to the number of status information updates. It can be seen that this control method enables the radio frequency device to pass the SAR certification test smoothly according to the new regulations, and avoids the performance limitation of users in daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a flow chart of a method for controlling operation of a radio frequency device in one embodiment of the present invention.

[0020] Figure 2 This is a flow chart of a method for controlling operation of a radio frequency device in another embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0022] This embodiment discloses a method for controlling the operation of a radio frequency device, which automatically controls the operation mode of the radio frequency device, so that the radio frequency device can adapt to the SAR (Specific Absorption Rate) certification test of the new regulations and meet the normal use needs of users. The radio frequency device in this embodiment includes a mobile phone, a tablet computer, a smart watch, smart glasses, a smart bracelet, etc.

[0023] First of all, it should be noted that the RF device is provided with a specific absorption rate sensor and a RF antenna, and generates state information based on the detection value fed back by the specific absorption rate sensor. The state information includes first information indicating that the RF device is close to a biological body (including a human body or a simulated body simulating human tissue) and second information indicating that the RF device is far away from the biological body. The RF antenna includes a standard conduction power corresponding to a normal working state and a weak conduction power corresponding to a test state, and the weak conduction power is less than the standard transmission power.

[0024] The specific absorption rate sensor is a capacitive sensor used to detect whether the human body is close to an electronic device. When the human body is close to the antenna, the various layers of the structure in the specific absorption rate sensor work together to form a capacitor. The principle of the various layers of structure forming the capacitor is not repeated here. The closer the human body is to the electronic device, the greater the capacitance. Therefore, the specific absorption rate sensor can determine the distance between the human body and the electronic device through the change in capacitance.

[0025] Based on this, Figure 1 , the control method in this embodiment includes: S1: When the radio frequency device is turned on from off, the detection value of the specific absorption rate sensor is ignored and the first information is forcibly generated.

[0026] S2: Then, the state information is updated according to the detection value fed back by the specific absorption rate sensor. For example, at a certain moment after the power-on, if the state information generated based on the detection value of the specific absorption rate sensor is the second information, the current first information is updated.

[0027] S3: Determine whether the number of status information updates reaches a preset first threshold, if not, proceed to S4, if yes, proceed to S5.

[0028] S4: Control the radio frequency device to enter the first working mode.

[0029] In the first operating mode, the RF antenna operates with the weak conducted power.

[0030] S5: Exit the first working mode.

[0031] The first threshold value may be adjusted and confirmed according to test data. For example, in this embodiment, the first threshold value is confirmed to be 14.

[0032] Based on the radio frequency device operation control method disclosed in this embodiment, when the new regulations are used to perform SAR certification testing on radio frequency devices, first, the radio frequency device is placed close to a simulation device (which is provided with tissue fluid simulating human tissue) in a powered-off state. Then, the radio frequency device is turned on and the first information is generated immediately after the power is turned on. Moreover, since the radio frequency device is attached to the simulation device and does not move, the status information will not or rarely change, so that the number of status information updates is difficult to reach the first threshold. Therefore, the radio frequency device is placed in the first working mode that operates with the weakly conducted power, thereby meeting the test requirements. When the test is completed, since the user's body will contact the radio frequency device multiple times, the number of status information updates will quickly reach the first threshold, thereby launching the first working mode.

[0033] On the other hand, Figure 2 When the number of status information updates reaches a preset first threshold, the radio frequency device is controlled to enter a second working mode.

[0034] In the second working mode, when the state information is the first information, the RF antenna works at the weak conduction power, and when the state information is the second information, the RF antenna works at the standard conduction power. Thus, the performance of the RF device meets the requirements of normal use, effectively improving the user experience.

[0035] In addition, whether to enter the second working mode from the first working mode can also be confirmed based on the condition of the status information update frequency. That is, when the update frequency of the status information in a unit time period reaches a preset second threshold, such as the second threshold is 3 times / S, the radio frequency device is controlled to enter the second working mode. In this embodiment, by using the update frequency, the radio frequency device can be quickly controlled to enter the second working mode to meet the normal use needs of the user.

[0036] In addition, since the SAR certification detection time of the radio frequency device is fixed, in order to prevent the radio frequency device from staying in the first working mode for a long time, so that after the test is completed, even if the user does not trigger the update of the status information, it can be switched to the second working mode, the triggering condition for switching the working mode is further improved: if the time of the status information in the first working mode is greater than the third threshold, the radio frequency device is controlled to enter the second working mode. The third threshold can be configured with reference to the SAR certification detection time.

[0037] It is worth noting that the three conditions for determining whether the RF device enters the second working mode from the first working mode are the number of status information updates, the frequency of status information updates, and the time the status information is in the first working mode. If any one of these three conditions is met, the RF device is controlled to enter the second working mode from the first working mode.

[0038] On the other hand, when the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the first information is generated, and when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the second information is generated, indicating that the first threshold is greater than the second threshold. For example, the first threshold is [900, 1200], and the second threshold is [300, 500].

[0039] In summary, the radio frequency device operation control method disclosed in the above embodiment of the present invention makes a mandatory setting for the SAR trigger mechanism when the radio frequency device enters the power-on state from the off state, that is, ignores the detection value of the current specific absorption rate sensor, and forcibly generates the state information representing the first information of the radio frequency device approaching the biological body. In this way, when the SAR certification test is performed according to the new regulations, the radio frequency device can automatically enter the test mode based on weak conduction power to complete the test. After the test is completed, the test mode can be automatically exited according to the number of status information updates and enter the normal working mode. It can be seen from this that this control method enables the radio frequency device to pass the SAR certification test smoothly according to the new regulations, and avoids the performance limitation of users in daily use.

[0040] In another preferred embodiment of the present invention, a radio frequency device is disclosed, which includes a radio frequency antenna, a specific absorption rate sensor electrically connected to the radio frequency antenna, a state detection module, a state configuration module, an update module and an operating mode selection module.

[0041] The radio frequency antenna includes a standard transmission power corresponding to a normal working state and a weak transmission power corresponding to a test state, and the weak transmission power is smaller than the standard transmission power.

[0042] The state detection module is used to generate state information based on the detection value fed back by the specific absorption rate sensor, and the state information includes first information indicating that the radio frequency device is close to the biological body and second information indicating that the radio frequency device is far away from the biological body.

[0043] When the radio frequency device enters the power-on state from the power-off state, the state configuration module forcibly configures the state detection module so that the state detection module generates the first information.

[0044] The updating module is used to update the state information according to the detection value fed back by the specific absorption rate sensor.

[0045] When the state information update times does not reach a preset first threshold, the working mode selection module controls the radio frequency device to select a first working mode.

[0046] In the first operating mode, the RF antenna operates with the weak conducted power.

[0047] On the other hand, when the number of status information updates reaches a preset first threshold, the working mode selection module controls the radio frequency device to select to enter the second working mode; In the second working mode, when the state information is the first information, the RF antenna works with the weak conduction power; and when the state information is the second information, the RF antenna works with the standard conduction power.

[0048] On the other hand, if the update frequency of the status information within a unit time period reaches a preset second threshold, or the time of the status information in the first working mode is greater than a third threshold, the working mode selection module controls the radio frequency device to enter the second working mode.

[0049] On the other hand, when the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the status detection module generates the first information; when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the status detection module generates the second information indicating that the first threshold is greater than the second threshold.

[0050] The working principle and mode of the radio frequency device in this embodiment are detailed in the above radio frequency device working control method, which will not be repeated here.

[0051] The present invention also discloses a radio frequency device work control system, which includes one or more processors, a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the program includes instructions for executing the radio frequency device work control method as described above. The processor can adopt a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, which are used to execute relevant programs to implement the functions required to be executed by the modules in the radio frequency device work control system of the embodiment of the present application, or to execute the radio frequency device work control method of the method embodiment of the present application.

[0052] The present invention also discloses a computer-readable storage medium, which includes a computer program, and the computer program can be executed by a processor to complete the radio frequency device operation control method as described above. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a read-only memory (ROM), or a random access memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a tape, a magnetic disk, or an optical medium, such as a digital versatile disc (DVD), or a semiconductor medium, such as a solid state disk (SSD), etc.

[0053] The embodiment of the present application also discloses a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of an electronic device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the electronic device executes the above-mentioned radio frequency device operation control method.

[0054] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A method for controlling the operation of a radio frequency device based on specific absorption rate detection, characterized in that: The radio frequency device is provided with a specific absorption rate sensor and a radio frequency antenna, and generates state information based on the detection value fed back by the specific absorption rate sensor, wherein the state information includes first information indicating that the radio frequency device is close to the biological body and second information indicating that the radio frequency device is far away from the biological body; the radio frequency antenna includes a standard conduction power corresponding to a normal working state and a weak conduction power corresponding to a test state, wherein the weak conduction power is less than the standard transmission power, and the control method includes: When the radio frequency device enters a power-on state from a power-off state, forcibly generating the first information; Updating the state information according to the detection value fed back by the specific absorption rate sensor; When the number of status information updates does not reach a preset first threshold, control the radio frequency device to enter a first working mode; when the number of status information updates reaches a preset first threshold, exit the first working mode; In the first operating mode, the RF antenna operates with the weak conducted power.

2. The method for controlling radio frequency equipment operation based on specific absorption rate detection according to claim 1, characterized in that: When the number of times the status information is updated reaches a preset first threshold, controlling the radio frequency device to enter a second working mode; In the second working mode, when the state information is the first information, the RF antenna works with the weak conduction power; and when the state information is the second information, the RF antenna works with the standard conduction power.

3. The method for controlling radio frequency equipment operation based on specific absorption rate detection according to claim 2, characterized in that: If the update frequency of the status information in a unit time period reaches a preset second threshold, or the time of the status information in the first working mode is greater than a third threshold, the radio frequency device is controlled to enter the second working mode.

4. The method for controlling radio frequency equipment operation based on specific absorption rate detection according to claim 1, characterized in that: When the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the first information is generated; when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the second information is generated, and the first threshold is greater than the second threshold.

5. A radio frequency device, characterized in that: include: A radio frequency antenna and a specific absorption rate sensor electrically connected to the radio frequency antenna, wherein the radio frequency antenna includes a standard transmission power corresponding to a normal working state and a weak transmission power corresponding to a test state, wherein the weak transmission power is less than the standard transmission power; A state detection module, the state detection module is used to generate state information based on the detection value fed back by the specific absorption rate sensor, the state information including first information indicating that the radio frequency device is close to the biological body and second information indicating that the radio frequency device is far away from the biological body; a state configuration module, when the radio frequency device enters the power-on state from the power-off state, the state configuration module forcibly configures the state detection module so that the state detection module generates the first information; An updating module, the updating module being used to update the state information according to the detection value fed back by the specific absorption rate sensor; a working mode selection module, wherein when the number of times the state information is updated does not reach a preset first threshold, the working mode selection module controls the radio frequency device to select a first working mode; In the first operating mode, the RF antenna operates with the weak conducted power.

6. The radio frequency device according to claim 5, characterized in that: When the number of times the status information is updated reaches a preset first threshold, the working mode selection module controls the radio frequency device to select to enter the second working mode; In the second working mode, when the state information is the first information, the RF antenna works with the weak conduction power; and when the state information is the second information, the RF antenna works with the standard conduction power.

7. The radio frequency device according to claim 6, characterized in that: If the update frequency of the status information in a unit time period reaches a preset second threshold, or the time of the status information in the first working mode is greater than a third threshold, the working mode selection module controls the radio frequency device to enter the second working mode.

8. The radio frequency device according to claim 5, characterized in that: When the detection value fed back by the specific absorption rate sensor is within a preset first threshold range, the status detection module generates the first information; when the detection value fed back by the specific absorption rate sensor is within a preset second threshold range, the status detection module generates the second information indicating that the first threshold is greater than the second threshold.

9. A radio frequency equipment operation control system, characterized in that: include: one or more processors; Memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs comprising instructions for executing the radio frequency device operation control method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The method comprises a computer program, wherein the computer program can be executed by a processor to implement the radio frequency device operation control method according to any one of claims 1 to 4.

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