A control system with WIFI wireless communication function for portable smart devices; portable smart devices

Abstract

This application relates to a control system with WIFI wireless communication functionality for a portable smart device, and the portable smart device itself. The control system includes a WIFI communication module, a temperature sensor, and a processing unit. The WIFI communication module includes a radio frequency transceiver circuit. The temperature sensor is used to detect the temperature of the control system. The processing unit is configured to acquire the detected temperature and adjust the digital gain of an amplifier accordingly. Specifically, within the operating temperature range of the control system, the digital gain is increased when the detected temperature is higher than a reference temperature, and decreased when the detected temperature is lower than the reference temperature, so that the deviation of the transmit power of the radio frequency transceiver circuit from the reference transmit power within the operating temperature range is less than a first threshold. Thus, the transmit power of the complex portable smart device can remain essentially stable at the reference transmit power even when used in environments with large temperature differences.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, and more particularly, to a control system with WIFI wireless communication function for a portable smart device and the portable smart device. BACKGROUND

[0002] When the chip is working, the temperature of the chip will inevitably change due to the change of the ambient temperature of the chip. At this time, the transmitting power of the chip in a high or low temperature environment with a large temperature difference is quite different from the transmitting power of the chip at normal temperature. Small smart devices (wearable devices) with WIFI function are compact, have large chip power consumption, and have serious heat generation and poor heat dissipation effect, which leads to chip temperature accumulation, reduces the wireless communication effect, and even causes the wireless communication connection to be disconnected. In a low temperature environment, the chip transmitting power may be too large to interfere with the normal work of other products. In the prior art, analog gain calibration is used to adjust the transmitting power, but this method has low analog gain accuracy and is greatly affected by temperature, cannot accurately control the transmitting power to be stable in a reasonable range, and cannot meet the requirements of users. SUMMARY

[0003] The present application is provided to solve the above-mentioned defects in the prior art. A control system with WIFI wireless communication function for a portable smart device and the portable smart device are needed, which can automatically and timely compensate and adjust the transmitting power of the WIFI communication module in a large-span temperature change range, and quickly and accurately control and stabilize it in a reasonable range.

[0004] According to a first aspect of the present application, a control system with WIFI wireless communication function for a portable smart device is provided, comprising: a WIFI communication module comprising a radio frequency transceiver circuit, the radio frequency transceiver circuit being provided with an amplifier with adjustable digital control gain to adjust the transmitting power based on the digital control gain; a temperature sensor configured to detect the temperature of the control system; a processing unit configured to obtain the detected temperature and adjust the digital gain of the amplifier accordingly, specifically comprising: increasing the digital gain when the detected temperature is higher than the reference temperature and decreasing the digital gain when the detected temperature is lower than the reference temperature in the working temperature range of the control system, so that the deviation of the transmitting power of the radio frequency transceiver circuit in the working temperature range from the reference transmitting power is lower than a first threshold.

[0005] According to a second aspect of the present application, a portable smart device with WIFI wireless communication function is provided, comprising the control system described in each embodiment of the present application.

[0006] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0007] The control system of the application is provided with a temperature sensor, which detects the temperature of the control system sensitively and accurately. The processing unit adjusts the digital gain of the amplifier according to the temperature detected by the temperature sensor, increases the digital gain when the detected temperature is higher than the reference temperature, and decreases the digital gain when the detected temperature is lower than the reference temperature, so that the deviation of the transmission power of the radio frequency transceiver circuit in the working temperature range from the reference transmission power is lower than the first threshold value, thereby enabling the control system to stabilize the transmission power near the reference transmission power when it is in an environment with a large temperature difference. In this way, when the control system is in a high-temperature environment, WIFI disconnection due to too low transmission power of the radio frequency transceiver circuit is avoided, thereby avoiding the influence on wireless communication. At the same time, when in a low-temperature environment, the normal work of other products is not disturbed due to too large transmission power. The processing unit adjusts the digital gain of the amplifier according to the detected temperature, without the need to increase other equipment, and the control accuracy of the transmission power is higher. BRIEF DESCRIPTION OF DRAWINGS

[0008] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components in different views. The drawings are intended to illustrate various embodiments in accordance with the application, and are not intended to limit the application, nor is the application limited to the embodiments disclosed. Like numerals can be used to describe like components in the various figures. The embodiments are illustrative rather than limiting.

[0009] Figure 1 A structural schematic diagram of a control system with WIFI wireless communication function for a portable smart device according to an embodiment of the application is shown.

[0010] Figure 2 A structural schematic diagram of a radio frequency transceiver circuit according to an embodiment of the application is shown.

[0011] Figure 3 A flow chart of a method for adjusting the digital gain of an amplifier by a processing unit according to an embodiment of the application is shown.

[0012] Figure 4 A mapping relationship diagram between the values of an ADC device and the temperature according to an embodiment of the application is shown.

[0013] Figure 5 A comparison diagram of power fluctuations corresponding to temperature changes before and after calibration according to an embodiment of the application is shown. DETAILED DESCRIPTION

[0014] For those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. The embodiments of the present application will be described in further detail below in combination with the drawings and specific embodiments, but not as a limitation of the present application. The various steps described herein should not be considered as limiting the order described herein as an example, provided that the order can be adjusted by those skilled in the art, as long as the logic between them is not destroyed, which leads to the failure of the entire process.

[0015] The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. In the present application, the arrows shown in the figure are only an example of the execution order, not a limitation, and the technical solutions of the present application are not limited to the execution order described in the embodiments. The steps in the execution order can be combined, decomposed, and exchanged in order, as long as the logical relationship of the execution content is not affected.

[0016] All terms used in the present application (including technical terms or scientific terms) have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, such as general dictionaries, should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise defined herein. The technology, methods and equipment known to those skilled in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification.

[0017] Figure 1 The structure schematic diagram of the control system with WIFI wireless communication function for portable intelligent device according to the embodiment of the present application is shown. The control system with WIFI wireless communication function for portable intelligent device 100 includes WIFI communication module 101, temperature sensor 103 and processing unit 104. Wherein, WIFI communication module 101 includes radio frequency transceiver circuit, the radio frequency transceiver circuit is provided with amplifier 102 with adjustable digital control gain, to adjust the transmitting power based on the digital control gain. Specifically, as Figure 2As shown, when receiving, the antenna 107 converts the electromagnetic wave sent by the base station into a weak alternating current signal, the received weak alternating current signal is amplified by the low noise amplifier (LNA) 108, and then is mixed with the local oscillation signal by the first mixer 109 to be down-converted into a signal containing intermediate frequency signal components. The useful intermediate frequency signal is filtered out by the first filter 110 and then is input into the analog-to-digital converter (ADC) 111 to be converted into a digital signal, and then is further processed by the baseband circuit. When transmitting, the low-frequency analog signal output by the digital-to-analog converter (DAC) 112 is processed by the second filter 113, and then is mixed with the high-frequency carrier provided by the voltage-controlled oscillator (VCO) 115 by the second mixer 114 to be up-converted into a radio frequency modulation signal. The radio frequency signal is amplified by the amplifier (PA) 102 to obtain sufficient transmission power, and then is converted into an electromagnetic wave by the antenna 107 and is radiated out. The amplifier 102 is mainly used for the transmission link, and the weak radio frequency signal in the transmission channel is amplified to obtain sufficient power, so as to realize higher communication quality, stronger battery endurance and longer communication distance.

[0018] The temperature sensor 103 is configured to detect the temperature of the control system 100 to obtain the temperature of the control system 100 during the working process of the portable intelligent device. The temperature sensor 103 can include one of a thermocouple, a thermistor, a resistance temperature detector (RTD) and an IC temperature sensor. The processing unit 104 is configured to obtain the detected temperature and adjust the digital gain of the amplifier 102 according to the detected temperature. The processing unit 104 can be a processor or a combination of a processor and other devices, and is not limited in this regard.

[0019] In some embodiments, various RISC (Reduced Instruction Set Computer) processor IPs purchased from ARM, etc. can be used as the processing unit 104 of the control system 100 of the present application to perform corresponding functions, and the temperature compensation of the transmit power is implemented by using an embedded system (for example, but not limited to, an SOC). Specifically, there are many modules on the market-purchasable modules (IP), such as, but not limited to, memory (the memory 105 can be an internal memory or an external expansion memory on the IP), various communication modules (such as the WIFI communication module 101, a Bluetooth module, etc.), codecs, buffers, and the like. Other components such as the temperature sensor 103, the antenna 107, the microphone, and the speaker can be externally connected to the chip. The user can construct an ASIC (Application Specific Integrated Circuit) by using the purchased IP or self-developed modules to implement various communication modules, codecs, and each step of the temperature compensation method of the transmit power of the present application, so as to reduce power consumption and cost. It should be noted that the "control system" in the present application is intended to represent a system for manipulating the target device in which it is located, which can generally represent, for example, a chip, such as an ASIC implemented based on an SOC, but is not limited thereto, and any hardware circuit, software-processor configuration, and soft-hardware combined firmware capable of manipulation can be used to implement the control system. For example, the processing performed by the processing unit 104 can be implemented as executable instructions executed by a RISC processor, or can be formed as different hardware circuit modules, or can be formed as a soft-hardware combined firmware, which will not be described here.

[0020] Specifically, as Figure 3 In step S301, the temperature detected by the temperature sensor 103 is acquired, and the digital gain of the amplifier 102 is adjusted according to the temperature. Specifically, within the operating temperature range of the control system 100, it is determined whether the detected temperature is higher than a reference temperature (step S302), the digital gain is increased when the detected temperature is higher than the reference temperature (step S303), and the digital gain is decreased when the detected temperature is lower than the reference temperature (step S304), so that the deviation of the transmit power of the radio frequency transceiver circuit from the reference transmit power is lower than a first threshold value within the operating temperature range. The first threshold value can be customized according to the user requirements of the control system 100. For example, the operating temperature range is from -20 degrees Celsius to 65 degrees Celsius, and the deviation of the transmit power of the radio frequency transceiver circuit from the reference transmit power is within 1 dB within the operating temperature range. Of course, the first threshold value can match different operating temperature ranges, and can also meet more relaxed deviation requirements. The digital gain mainly adjusts the pulse amplitude of the digital-to-analog conversion input. In this way, the transmit power can be stabilized at the reference transmit power, so that the portable intelligent device configured with the control system 100 of the embodiments of the present application can still maintain good wireless communication capability and stability in an environment with large temperature difference.

[0021] In fact, the portable smart device with WIFI function is more and more powerful, and the power consumption is more and more large. The portable smart device has a compact structure, and the chip has a small volume, so the heat accumulates fast, the heat dissipation effect is poor, and the temperature has a large influence on the transmitting power. When the chip works, the temperature of the chip will change due to the change of the ambient temperature. At this time, the transmitting power at normal temperature will have a large difference at high and low temperatures. The power is small at high temperature, and the power is large at low temperature. If the transmitting power is too large, it will affect other products, interfere with the normal work of other products, and affect the power consumption and the signal quality of the transmitting signal. If the power is too small, the signal energy of the transmitting signal is not large enough, which may affect the signal reception of the receiving side, causing signal lag and the like. After the temperature sensor 103 detects the temperature of the control system 100, the automatic analysis of the processing unit 104 is performed. When the detected temperature is higher than the reference temperature, the digital gain is increased to avoid too small signal power or even disconnection. When the detected temperature is lower than the reference temperature, the digital gain is reduced to prevent the transmitting power from being too large to affect the work of other products and to avoid excessive power consumption of the high transmitting power. Through this method, the transmitting power of the control system 100 can be kept near the reference transmitting power in a large temperature difference environment of high and low temperatures, so that the transmitting power of the control system 100 is prevented from changing suddenly due to sudden temperature change. Moreover, the method can ensure the accuracy, accuracy and sensitivity of the transmitting power compensation.

[0022] In some embodiments of the present application, the control system 100 further includes a memory 105 configured to store a temperature gain compensation table. The memory 105 can include a read-only memory (ROM), a flash memory, a random access memory (RAM), a dynamic random access memory (DRAM) such as synchronous DRAM (SDRAM) or Rambus DRAM, a static memory (for example, a flash memory, a static random access memory), and the like, on which computer executable instructions are stored in any format. In some embodiments, the memory 105 can store one or more computer executable instructions. The computer program instructions can be accessed by the processor, read from the ROM or any other suitable memory 105 location, and loaded in the RAM for execution by the processor. For example, the memory 105 can store one or more software applications. The software applications stored in the memory 105 can include, for example, an operating system (not shown) for a general computer system and an operating system for a soft control device.

[0023] Specifically, the temperature gain compensation table defines the correlation between the detected temperature and the matching digital gain of the amplifier 102, at which the transmit power of the radio frequency transceiver circuit can deviate from the reference transmit power by less than the first threshold value by using the matching digital gain of the amplifier 102. The processing unit 104 is further configured to determine the matching digital gain of the amplifier 102 according to the temperature gain compensation table when the detected temperature deviates from the reference temperature within the working temperature range, and adjust the digital gain of the amplifier 102 to the matching digital gain. Specifically, the temperature gain compensation table is obtained by pre-detecting the same type of control system 100 of the same batch before leaving the factory, for example, the temperature gain compensation table can be as shown in Table 1-Table 3.

[0024] Table 1: Temperature gain compensation table in 2g communication mode

[0025]

[0026] Table 2: Temperature gain compensation table in 5g (WIFI channel 36-108) communication mode

[0027]

[0028] Table 3: Temperature gain compensation table in 5g (WIFI channel 110-165) communication mode

[0029]

[0030] qfn-c in Table 1, Table 2 and Table 3 refers to the chip model, (left open right closed) temperature interval refers to the temperature range excluding the left temperature, including the right temperature, for example, the (left open right closed) temperature interval of Table 1 is (0-5]. 0x11d[13:0] represents the register bit of the adjustment gain, in which 11d represents the matching digital gain. The channel interval represents the WIFI channel.

[0031] The temperature sensor 103 detects the temperature of the control system 100. For example, for the WIFI 5G channel 36-108, the current temperature of the control system 100 is detected to be 40 degrees, which deviates from the reference temperature. The read value in Table 2 (left open right closed) is 0xd2B in the temperature interval (35-40], and the matching digital gain is d2B. The digital gain of the amplifier 102 is adjusted to d2B. If the detected temperature is 14, the read value in Table 2 (left open right closed) is 0xb85 in the temperature interval (10-15], and the matching digital gain is b85. The digital gain of the amplifier 102 is adjusted to the matching digital gain b85. In this way, by detecting the temperature of the control system 100, when the detected temperature deviates from the reference temperature, it is determined which temperature interval of the temperature gain compensation table the temperature belongs to, and the different digital gains are changed for compensation. When the external environment temperature changes, the chip temperature will also change. According to the pre-determined temperature gain compensation table, corresponding compensation is performed to ensure that the transmission power is consistent at different temperatures in real time. In this way, the transmission power of the radio frequency transceiver circuit can be accurately and efficiently stabilized at the reference transmission power, so that the device configured with the control system 100 can maintain good WIFI communication quality in an environment with large temperature difference.

[0032] In some embodiments of the present application, the processing unit 104 is further configured to obtain the running state of the control system 100, and in the case that the running state is a sleep state, the temperature detection of the temperature sensor 103 is disabled, otherwise the temperature detection of the temperature sensor 103 is enabled. The temperature detection of the control system 100 by the temperature sensor 103 also consumes a lot of power consumption, which will cause a certain working burden to the chip. The temperature compensation and other processing based on the detected temperature will also occupy a certain memory. The processing unit 104 determines whether to enable the temperature sensor 103 based on the running state of the control system 100. For example, when the running state of the chip is a sleep state, the WIFI is in a disconnected state, and there is no need to start the temperature sensor 103 at this time. When it is detected that the chip is in a running state, the temperature sensor 103 can be started. In this way, the control system 100 can be in a low-power state.

[0033] In some embodiments of the present application, the temperature sensor 103 comprises an ADC device 106 whose value varies in association with temperature, and the memory 105 is further configured to store a mapping relationship between the value of the ADC device 106 and temperature. The value directly obtained by the ADC device 106 is not the actual Celsius temperature of the control system 100, and there is a deviation between the value and the actual Celsius temperature. Therefore, the mapping relationship between the value of the ADC device 106 and temperature is stored in the memory 105, and the value of the ADC device 106 is converted into the actual Celsius temperature of the control system 100 based on the mapping relationship. As shown in Figure 5 FIG. 8, the mapping relationship between the value of the ADC device 106 and temperature is constructed, the processing unit 104 obtains the value of the ADC device 106, and according to the value of the ADC device 106, the corresponding temperature is determined by referring to the mapping relationship, as the detected temperature of the control system 100 and enabling the detected temperature to be read out. Figure 5

[0034] After obtaining the control system 100, the user can test the control system 100 in a high-temperature or low-temperature environment. Since the detected temperature of the control system 100 according to the embodiments of the present application can be read out, and the read-out temperature is the actual Celsius temperature of the control system 100, when the user places the control system 100 in a high-temperature or low-temperature environment, the current temperature change of the chip can be known by reading the temperature of the control system 100, and whether the transmit power of the chip in the high-temperature or low-temperature environment is stable at the reference transmit power can be known, so as to ensure that the control system 100 can be normally used.

[0035] ​In some embodiments of the present application, the processing unit 104 is further configured to cause the temperature sensor 103 to periodically detect the temperature of the control system 100 at a first predetermined interval, determine a rate of change of the detected temperature, and when the rate of change of the detected temperature is greater than a rate of change threshold, periodically detect the temperature of the control system 100 at a second predetermined interval that is shorter than the first predetermined interval. Specifically, when the chip is actually working, the ambient temperature changes slowly, and the temperature of the chip can be read once every first predetermined interval, for example, the temperature of the chip can be read once every 5 seconds, and the rate of change of the temperature is obtained based on the temperatures obtained at different time periods. With the change of the ambient temperature in which the chip is located, if the ambient temperature changes slowly, then every 5 seconds can meet the detection requirement of the temperature sensor 103 for the temperature of the chip. However, if the ambient temperature changes suddenly, for example, the ambient temperature suddenly rises or falls, the rapid change of the ambient temperature will immediately have a bad effect on the operation of the chip. At this time, if the temperature of the chip is still detected once every 5 seconds, it is obviously unable to meet the requirement. Therefore, when the rate of change of the detected temperature is greater than the rate of change threshold, it indicates that the ambient temperature in which the chip is located has changed greatly, and the temperature of the chip needs to be detected periodically at a second predetermined interval that is shorter than the first predetermined interval, for example, the temperature of the chip can be read once every 2 seconds. In this way, the change of the temperature of the chip can be accurately obtained, and this is conducive to accurately controlling the digital gain control and improving the accuracy of temperature compensation.

[0036] In some embodiments of the present application, the control system 100 includes an interface and a register 116, and the processing unit 104 is further configured to write data indicating the digital gain into the register 116 via the interface, wherein the digital gain of the amplifier 102 is automatically controlled by the data in the register 116. Specifically, the data indicating the digital gain is written into the register 116 using assembly language, that is, the logic for adjusting the digital gain of the amplifier 102 is written into the register 116. In this way, the data in the register 116, which has been set up by hardware, is directly modified, and the digital gain of the amplifier 102 can be changed accordingly. In this way, the digital gain of the amplifier 102 is automatically controlled by the data in the register 116, rather than using software to control the digital gain of the amplifier 102, so that the control of the digital gain of the amplifier 102 is more rapid, accurate, and has lower power consumption.

[0037] In some embodiments of the present application, the processing unit 104 is further configured to, in the case that the WIFI communication module 101 performs WIFI 5G communication, adjust the digital gain of the amplifier 102 with reference to a temperature gain compensation table that is separate from each other for a first frequency range of 5.1G to 5.5G and a second frequency range of 5.5G to 5.9G, respectively, the temperature gain compensation table for the first frequency range and the temperature gain compensation table for the second frequency range being pre-detected before factory. The WIFI 5G frequency range is wide, and the transmission power of the chip itself has some deviation at different frequency ranges. Specifically, the low frequency region 5.1-5.5G is the first frequency range, and the high frequency region 5.5-5.9G is the second frequency range. Adjusting the digital gain of the amplifier 102 with reference to a temperature gain compensation table that is separate from each other for the first frequency range and the second frequency range can achieve higher precision control. If WIFI 5G is not separately compensated for temperature, the transmission power deviation caused by the low frequency (such as 14dB) and the high frequency (15dB) of WIFI will be close to 1dB.

[0038] Further, the working temperature range reaches -20 degrees Celsius to 65 degrees Celsius, and in the working temperature range, the deviation of the transmission power of the radio frequency transceiver circuit from the reference transmission power is within 1dB. Specifically, for the same batch and same model of chips, the transmission power (unit, W) is tested at -20 degrees Celsius to 70 degrees Celsius, and before and after calibration in 2G communication, 5G communication (low frequency region) and 5G communication (high frequency region), respectively. The test results are shown in Table 4.

[0039] Table 4: Transmission power test table before and after calibration in 2G, 5G low frequency region, and 5G high frequency region

[0040]

[0041] The last row of Table 4 represents the transmission power change value, which is calculated by subtracting the maximum value from the minimum value of each column. By combining Table 4 with Figure 5 It can be seen that after calibration, the fluctuation of the transmission power is small, and the deviation is within 1dB.

[0042] In some embodiments of the present application, a portable intelligent device with WIFI wireless communication function is provided, which includes the control system 100 according to various embodiments of the present application. The intelligent device includes but is not limited to earphones, mobile phones, iPads, watches, bracelets, glasses, etc.

[0043] Furthermore, although example embodiments have been described herein, the scope of coverage of this patent will include any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of the various embodiments

[0044] The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) can be used in combination with each other. Other examples can be used in addition to or in place of the examples described above. Still other embodiments will become apparent to those skilled in the art from the following description, which is by way of illustration, one of the best modes contemplated for carrying out the application. As will be realized, the application is capable of modifications in various obvious aspects, all without departing from the spirit and scope of the application. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature, and explanations in connection with the

[0045] The above embodiments are only exemplary embodiments of the present application, not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A control system with WIFI wireless communication function for a portable intelligent device, characterized in that, The application relates to a control system, comprising: an interface and a register, and a WIFI communication module comprising a radio frequency transceiver circuit, the radio frequency transceiver circuit being provided with an amplifier with an adjustable digital control gain to adjust the transmitting power of the WIFI communication module based on the digital control gain; a temperature sensor comprising an ADC device whose value changes in association with temperature, configured to detect the temperature of the control system; a memory configured to store a mapping relationship between the value of the ADC device and temperature and a temperature gain compensation table, wherein the temperature gain compensation table defines the association between the detected temperature and the matching digital gain of the amplifier, and the matching digital gain of the amplifier can make the deviation of the transmitting power of the radio frequency transceiver circuit from the reference transmitting power be below a first threshold at the detected temperature; and a processing unit configured to: obtain the value of the ADC device; according to the value of the ADC device, refer to the mapping relationship to determine the corresponding temperature as the detected temperature of the control system and make the detected temperature be able to be read out; obtain the detected temperature and adjust the digital gain of the amplifier according to the detected temperature, specifically comprising: within the working temperature range of the control system, when the detected temperature is higher than the reference temperature, increase the digital gain, and when the detected temperature is lower than the reference temperature, decrease the digital gain, determine the matching digital gain of the amplifier according to the temperature gain compensation table; write the data indicating the digital gain into the register via the interface, wherein the digital gain of the amplifier is automatically controlled by the data in the register; adjust the digital gain of the amplifier to the matching digital gain, so that the deviation of the transmitting power of the radio frequency transceiver circuit from the reference transmitting power is below the first threshold within the working temperature range.

2. The control system of claim 1, wherein, The temperature gain compensation table is obtained by pre-detecting the same type of control system of the same batch before leaving the factory.

3. The control system of claim 1, wherein, The processing unit is further configured to: obtain the running state of the control system; in the case that the running state is a sleep state, disable the temperature detection of the temperature sensor, otherwise enable the temperature detection of the temperature sensor.

4. The control system of claim 1, wherein, The processing unit is further configured to: make the temperature sensor periodically detect the temperature of the control system at a first predetermined interval; determine the change rate of the detected temperature; when the change rate of the detected temperature is greater than a change rate threshold, periodically detect the temperature of the control system at a second predetermined interval shorter than the first predetermined interval.

5. The control system of claim 1, wherein, The processing unit is further configured to: in the case that the WIFI communication module performs WIFI 5G communication, for a first frequency range of 5.1G to 5.5G and a second frequency range of 5.5G to 5.9G, respectively refer to separate temperature gain compensation tables to adjust the digital gain of the amplifier, and the temperature gain compensation table of the first frequency range and the temperature gain compensation table of the second frequency range are respectively pre-detected before leaving the factory.

6. The control system of claim 1, wherein, The working temperature range reaches -20 degrees Celsius to 65 degrees Celsius, and within the working temperature range, the deviation of the transmitting power of the radio frequency transceiver circuit from the reference transmitting power is within 1dB.

7. A portable intelligent device with WIFI wireless communication function, characterized in that, A control system comprising any one of claims 1-6.

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