CN112987127B - Detection processing method and device of specific absorption rate sensor and electronic equipment - Google Patents

Abstract

The application provides a detection processing method and device of a specific absorption rate sensor and electronic equipment, wherein the method comprises the following steps: transmitting a first ultrasonic signal through an ultrasonic transmitter under the condition that the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is larger than a first preset value; acquiring a second ultrasonic signal through an ultrasonic receiver; determining whether a human body exists in a preset distance range of the electronic equipment according to the relation between the first ultrasonic signal and the second ultrasonic signal; and setting the first capacitance value as a reference capacitance value under the condition that no human body exists in the preset distance range of the electronic equipment. According to the application, under the condition that no human body exists in the preset distance range of the electronic equipment, the reference capacitance value is adjusted, the first capacitance value is set as the reference capacitance value, the influence caused by the interference capacitance to the absorption rate sensor is eliminated, and the environment capacitance value detected by the absorption rate sensor is more accurate.

Description

Detection processing method, device and electronic equipment of specific absorption rate sensor

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a detection and processing method, device and electronic equipment of a specific absorption rate sensor.

Background technique

With the rapid development of information technology, while people are enjoying the convenience brought by various electronic devices, they are also increasingly concerned about the impact of electromagnetic radiation from electronic devices on human health.

Specific Absorption Rate (SAR) is the electromagnetic power absorbed or consumed by a unit mass of human tissue. Electronic devices are usually equipped with SAR sensors, which are used to detect the capacitance value of environmental capacitors. Electronic devices determine whether there is a human body within a preset distance range of the electronic device by comparing the environmental capacitance value with the preset capacitance value. When there is a human body within the preset distance range of the electronic device, the transmission power of the antenna is reduced, thereby reducing the electromagnetic power that may be absorbed by human tissue.

However, in some cases, for example, when the antenna of an electronic device is dirty or scratched due to the electronic device falling, interference capacitance may be generated, resulting in inaccurate environmental capacitance value detected by the SAR sensor.

Summary of the invention

The purpose of the embodiments of the present application is to provide a detection and processing method, device and electronic device for a specific absorption rate sensor, which can solve the technical problem that the environmental capacitance value detected by the SAR sensor is not accurate enough.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a detection and processing method for a specific absorption rate sensor, including:

When the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than a first preset value, transmitting a first ultrasonic signal through the ultrasonic transmitter;

Acquiring a second ultrasonic signal through an ultrasonic receiver;

determining whether a human body exists within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal;

When there is no human body within a preset distance range of the electronic device, the first capacitance value is set as a reference capacitance value.

In a second aspect, an embodiment of the present application provides a detection processing device, including:

An ultrasonic transmitter, configured to transmit a first ultrasonic signal when a difference between a first capacitance value detected by the specific absorption rate sensor and a reference capacitance value is greater than a first preset value;

An ultrasonic receiver, used for acquiring a second ultrasonic signal;

A first determination module, configured to determine whether there is a human body within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal;

The first processing module is configured to set the first capacitance value to a reference capacitance when there is no human body within a preset distance range of the electronic device.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

In the embodiment of the present application, when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than the first preset value, a first ultrasonic signal is emitted by an ultrasonic transmitter, and a second ultrasonic signal is received by an ultrasonic receiver to determine whether there is a human body within a preset distance range of the electronic device; if there is no human body within the preset distance range of the electronic device, it indicates that interference capacitance has occurred, and in this case, the first capacitance value is set to the reference capacitance value. In the embodiment of the present application, when there is no human body within the preset distance range of the electronic device, the reference capacitance value is adjusted, and the first capacitance value is set to the reference capacitance value, eliminating the influence of the interference capacitance on the specific absorption rate sensor, so that the environmental capacitance value detected by the specific absorption rate sensor is more accurate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flow chart of a detection and processing method of a specific absorption rate sensor provided in an embodiment of the present application;

FIG2 is a schematic diagram of an application scenario of a detection and processing method for a specific absorption rate sensor provided in an embodiment of the present application;

FIG3 is a structural diagram of a detection and processing device provided in an embodiment of the present application;

FIG. 4 is a structural diagram of an electronic device provided in an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

An electronic device is usually provided with a SAR sensor for detecting the capacitance value of an ambient capacitor, which may be referred to as an ambient capacitance value. It should be understood that the ambient capacitance value is affected by factors such as the temperature and humidity of the environment in which the electronic device is located.

The working principle of the SAR sensor is to use the difference between the first capacitance value detected by the SAR sensor and the reference capacitance value as the environmental capacitance value. It should be noted that the reference capacitance value can be understood as the capacitance value of each component inside the electronic device. The reference capacitance value is a fixed value. It can be understood that when no interference capacitance is generated, the first capacitance value is the sum of the reference capacitance value and the environmental capacitance value. When the environmental capacitance value is greater than the preset value, the transmission frequency of the electronic device antenna is reduced to reduce the electromagnetic power that may be absorbed by human tissue.

However, in some cases, such as when the antenna of an electronic device is dirty or scratched, interference capacitance will be generated. The SAR sensor mistakenly determines the interference capacitance value as the environmental capacitance value, resulting in the environmental capacitance value detected by the SAR sensor being inaccurate, thereby reducing the transmission frequency of the antenna of the electronic device.

Based on the above possible technical problems, this application proposes the following technical ideas:

In the event of interference capacitance, the reference capacitance value is adjusted, and the first capacitance value detected by the SAR sensor is set as the reference capacitance value, so as to eliminate the capacitance value generated by the interference capacitance and improve the accuracy of the environmental capacitance value detected by the specific absorption rate sensor.

The detection and processing method of the specific absorption rate sensor provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

Please refer to FIG1 , which is a flow chart of a detection and processing method of a specific absorption rate sensor provided in an embodiment of the present application. The method provided in an embodiment of the present application is applied to an electronic device, the electronic device including a SAR sensor, and the detection and processing method of a specific absorption rate sensor provided in an embodiment of the present application includes the following steps:

S101 , when the difference between a first capacitance value detected by a specific absorption rate sensor and a reference capacitance value is greater than a first preset value, transmitting a first ultrasonic signal through an ultrasonic transmitter.

In this step, as described above, the first capacitance value detected by the SAR sensor is the sum of the ambient capacitance value and the reference capacitance value, and therefore, the difference between the first capacitance value and the reference capacitance value is the ambient capacitance value.

When the environmental capacitance value is greater than the first preset value, it indicates that there may be a human body within the preset range of the electronic device, or the electronic device generates interference capacitance.

Generally speaking, there are at least two ways to generate interference capacitance:

The first type: The antenna surface of the electronic device is dirty.

The second type: There are scratches on the antenna of the electronic device, which may be caused by the electronic device falling, being hit or in other circumstances.

In this step, the electronic device further includes an ultrasonic receiver and an ultrasonic transmitter, wherein the ultrasonic transmitter is used to transmit a first ultrasonic signal.

In the case where there may be a human body within the preset range of the electronic device, or the electronic device generates interference capacitance, an ultrasonic receiver and an ultrasonic transmitter may be used to determine whether there is a human body within the preset range of the electronic device.

S102: Acquire a second ultrasonic signal through an ultrasonic receiver.

In this step, the second ultrasonic signal acquired by the ultrasonic receiver is an ultrasonic signal fed back after the first ultrasonic signal is transmitted to the human body.

S103: Determine whether there is a human body within a preset distance range of the electronic device according to the relationship between the first ultrasonic signal and the second ultrasonic signal.

In this step, after the second ultrasonic signal, the distance between the electronic device and the human body can be determined based on the first ultrasonic signal and the second ultrasonic signal, so as to judge whether there is a human body within a preset distance range of the electronic device. For specific technical solutions, please refer to the subsequent embodiments.

S104: When there is no human body within a preset distance range of the electronic device, setting the first capacitance value to a reference capacitance value.

In this step, if there is no human body within the preset distance range of the electronic device, it means that the electronic device has generated interference capacitance, in which case the interference capacitance may be caused by dirt on the antenna surface. At the same time, due to the existence of interference capacitance, the environmental capacitance value detected by SAR is inaccurate, in which case the electronic device is controlled not to reduce the antenna transmission frequency.

In order to eliminate the influence of the interference capacitance on the SAR sensor, the first capacitance value is set as the reference capacitance value, so that the SAR sensor can be used again to detect the environmental capacitance to obtain an accurate environmental capacitance value.

Exemplarily, when it is detected that there is no human body within a preset distance range of the electronic device, the first capacitance value detected by the SAR sensor is 10 pF, and the preset reference capacitance value is 5 pF, then the reference capacitance value is set to 10 pF.

It should be understood that in some embodiments, if a human body is detected within a preset distance range of an electronic device, it means that the electronic device does not generate interference capacitance. In this case, the electronic device can be controlled to reduce the antenna transmission frequency, thereby reducing the electromagnetic power absorbed by human tissue.

It should be understood that in some embodiments, after manually cleaning the dirt or scratches on the antenna surface, the electronic device can be restarted to reacquire the capacitance value of each component of the electronic device and use the capacitance value as the reference capacitance value.

In an embodiment of the present application, when there is no human body within a preset distance range of the electronic device, the reference capacitance value is adjusted, and the first capacitance value is set to the reference capacitance value to eliminate the influence of the interference capacitance on the specific absorption rate sensor, so that the environmental capacitance value detected by the specific absorption rate sensor is more accurate.

Optionally, after determining whether there is a human body within a preset distance range of the electronic device, the method further includes:

When there is no human body within a preset distance range of the electronic device, the detection duration of the specific absorption rate sensor is obtained; when the detection duration is greater than the preset duration, the first capacitance value is set to a reference capacitance value.

In this embodiment, when there is no human body within a preset distance range of the electronic device, the detection time of the specific absorption rate sensor is obtained. When the detection time is longer than the preset time, it is determined that the electronic device has generated a relatively stable interference capacitance. In this case, the first capacitance value is set to a reference capacitance value to eliminate the influence of the interference capacitance.

It should be noted that the detection duration of the above-mentioned specific absorption rate sensor is the difference between the end time and the start time, the start time is the time corresponding to when the specific absorption rate sensor detects that the difference between the first capacitance value and the reference capacitance value is greater than the first preset value, and the end time is the time corresponding to when the electronic device detects that there is no human body within the preset distance range.

For example, when the time indicated by the built-in timer of the electronic device is 10:00, the environmental capacitance value detected by the specific absorption rate sensor is greater than the first preset value, and the start time is determined to be 10:00; when the time indicated by the built-in timer of the electronic device is 10:05, the electronic device detects that there is no human body within the preset distance range, and the end time is determined to be 10:05; the detection time can be determined to be 5 seconds. If the preset time is 3 seconds, since the detection time is longer than the preset time, the first capacitance value can be set as the reference capacitance value.

It should be understood that in some embodiments, when it is detected that there is no human body within a preset distance range of the electronic device, the first capacitance value is directly set to the reference capacitance value to eliminate the influence of the interference capacitance.

Optionally, before transmitting the first ultrasonic signal by the ultrasonic transmitter, the method further includes:

Determining whether the electronic device is in a falling state;

The transmitting of the first ultrasonic signal by the ultrasonic transmitter comprises:

When the electronic device is not in the falling state, a first ultrasonic signal is emitted by the ultrasonic transmitter.

In this embodiment, when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than the first preset value, it is first determined whether the electronic device is in a falling state within a preset time period, wherein the preset time period is before the environmental capacitance value is detected to be greater than the first preset value. Preferably, the preset time period can be 30 seconds before the environmental capacitance value is detected to be greater than the first preset value. As for the specific duration of the preset time period, this embodiment does not make any specific limitation here.

If the electronic device is not in a falling state, it means that there is no scratch on the antenna area of the electronic device, thereby determining whether there is a human body within a preset distance range of the electronic device.

When the electronic device is not in a falling state, it means that the electronic device does not generate interference capacitance due to the falling of the electronic device. In this case, it is further determined whether there is a human body within a preset distance range of the electronic device to determine whether the electronic device generates interference capacitance.

If the electronic device is in a dropped state, it means that there may be scratches on the antenna surface of the electronic device, thereby generating interference capacitance. In this case, the first capacitance value is set as the reference capacitance value to eliminate the influence of the interference capacitance on the SAR sensor, so that the SAR sensor can be used again to detect the environmental capacitance value to obtain an accurate environmental capacitance value.

Optionally, after determining whether the electronic device is in a falling state, the electronic device may display a prompt message to remind the user to clean the antenna to eliminate the interference capacitor.

It should be understood that in some embodiments, when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than the first preset value, the ultrasonic transmitter is directly controlled to emit a first ultrasonic signal to determine whether there is a human body within a preset distance range of the electronic device.

It should be understood that in other embodiments, when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than a first preset value, it is first determined whether there is a human body within the preset distance range of the electronic device. If there is no human body within the preset distance range of the electronic device, it is determined whether the electronic device is in a falling state.

The following is a detailed description of how to determine whether an electronic device has been dropped:

Optionally, determining whether the electronic device is in a falling state includes:

Acquire a first angular velocity, a second angular velocity, and a third angular velocity of the electronic device; query the first angular velocity, the second angular velocity, and the third angular velocity in a preset angular velocity table; and determine that the electronic device is in a falling state when the first angular velocity is within a first angular velocity range, the second angular velocity is within a second angular velocity range, and the third angular velocity is within a third angular velocity range.

In this embodiment, the angular velocity data recorded by the gyroscope within a preset time period can be obtained to determine whether the electronic device is in a falling state. As described above, the preset time period can be a period of time before the environmental capacitance value is detected to be greater than the first preset value.

The angular velocity data includes a first angular velocity, a second angular velocity and a third angular velocity of the electronic device. The directions of the first angular velocity, the second angular velocity and the third angular velocity are perpendicular to each other, the direction of the first angular velocity is perpendicular to the horizontal plane, and the directions of the second angular velocity and the third angular velocity are parallel to the horizontal plane.

Here, a three-dimensional rectangular coordinate system can be assumed, in which the direction of the X-axis of the coordinate system is consistent with the direction of the second angular velocity, and the second angular velocity represents the angular velocity of the electronic device moving in the X-axis direction; the direction of the Y-axis of the coordinate system is consistent with the direction of the third angular velocity, and the third angular velocity represents the angular velocity of the electronic device moving in the Y-axis direction; the direction of the Z-axis of the coordinate system is consistent with the direction of the first angular velocity, and the first angular velocity represents the angular velocity of the electronic device moving in the Z-axis direction.

It should be noted that when the electronic device is in a falling state, the first angular velocity, the second angular velocity, and the third angular velocity are all in different angular velocity ranges. The first angular velocity, the second angular velocity, and the third angular velocity of the electronic device can be input into a preset angular velocity table for query, and the angular velocity table stores the first angular velocity range, the second angular velocity range, and the third angular velocity range of the electronic device in the falling state. When the first angular velocity is in the first angular velocity range, the second angular velocity is in the second angular velocity range, and the third angular velocity is in the third angular velocity range, it is determined that the electronic device is in a falling state.

It should be understood that in some embodiments, a pressure sensor built into the electronic device can be used to detect whether the electronic device is subjected to excessive pressure, and when the pressure is greater than a certain value, it is determined that the electronic device is in a falling state.

The following specifically describes how to detect whether there is a human body within a preset distance range of an electronic device:

Optionally, determining whether there is a human body within a preset distance range of the electronic device according to the relationship between the first ultrasonic signal and the second ultrasonic signal includes:

Obtain the sending time corresponding to the first ultrasonic signal and the receiving time corresponding to the second ultrasonic signal; determine the difference between the receiving time and the sending time as a time difference; calculate the product of the time difference and a preset sound speed value; divide the product by a second preset value to obtain a distance value between the electronic device and the human body; when the distance value is less than a third preset value, determine that there is no human body within the preset distance range of the electronic device.

The present embodiment is described below in conjunction with FIG2. As shown in FIG2, the electronic device shown in FIG2 includes two SAR sensors, five antennas, an earpiece and a microphone. The earpiece can be understood as an ultrasonic transmitter, and the microphone can be understood as an ultrasonic receiver. It should be noted that the ultrasonic transmitter and the ultrasonic receiver can also be other components configured in the electronic device.

It should be understood that in the application scenario shown in Figure 2, the antenna can be understood as a sensing piece for the SAR sensor to detect environmental capacitance. The first SAR sensor detects environmental capacitance through antenna 1, antenna 2 and antenna 3; the second AR sensor detects environmental capacitance through antenna 4 and antenna 5.

Exemplarily, the propagation speed of sound waves is 340 m/s. If the time difference between the receiving time and the sending time is 1 millisecond, the product of the time difference and the preset sound speed value is 34 cm. 34 cm is divided by the second preset value, preferably, the second preset value is 2, and 17 cm is obtained, that is, the distance between the electronic device and the human body is 17 cm. If the third preset value is 20 cm, it is determined that there is a human body within the preset distance range of the electronic device.

As shown in the example above, an optional implementation is that the preset distance range can be set to 17 centimeters. In this implementation, if the time difference between the receiving time and the sending time is greater than 1 millisecond, it means that the distance between the electronic device and the human body is greater than 17 centimeters, that is, the distance between the electronic device and the human body is greater than the preset distance range, then it is determined that there is no human body within the preset distance range of the electronic device; if the time difference between the receiving time and the sending time is less than or equal to 1 millisecond, then it is determined that there is a human body within the preset distance range of the electronic device.

As shown in FIG3 , the detection processing device 200 includes:

The ultrasonic transmitter 201 is used to transmit a first ultrasonic signal when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than a first preset value;

An ultrasonic receiver 202, used to obtain a second ultrasonic signal;

A first determination module 203, configured to determine whether there is a human body within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal;

The first processing module 204 is configured to set the first capacitance value as a reference capacitance when there is no human body within a preset distance range of the electronic device.

Optionally, the detection processing device 200 further includes:

An acquisition module, configured to acquire a detection duration of the specific absorption rate sensor when no human body exists within a preset distance range of the electronic device;

The second processing module is configured to set the first capacitance value to a reference capacitance value when the detection duration is greater than a preset duration.

Optionally, the detection processing device 200 further includes:

A second determination module, used to determine whether the electronic device is in a falling state;

The ultrasonic transmitter 201 is also used for:

When the electronic device is not in the falling state, a first ultrasonic signal is emitted by the ultrasonic transmitter.

Optionally, the second determining module is further configured to:

Acquire a first angular velocity, a second angular velocity, and a third angular velocity of the electronic device;

Searching the first angular velocity, the second angular velocity, and the third angular velocity in a preset angular velocity table;

When the first angular velocity is within a first angular velocity range, the second angular velocity is within a second angular velocity range, and the third angular velocity is within a third angular velocity range, it is determined that the electronic device is in a falling state.

Optionally, the first determining module 203 is further configured to:

Acquire a sending time corresponding to the first ultrasonic signal and a receiving time corresponding to the second ultrasonic signal;

Determine the difference between the receiving time and the sending time as a time difference value;

Calculating the product of the time difference and a preset sound speed value;

Dividing the product by a second preset value to obtain a distance value between the electronic device and the human body;

When the distance value is less than a third preset value, it is determined that there is no human body within the preset distance range of the electronic device.

The detection and processing device in the embodiment of the present application can be a mobile terminal, or a component, integrated circuit, or chip in the terminal. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device can be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

The detection processing device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

The detection and processing device provided in the embodiment of the present application can implement each process implemented by the detection and processing method of the specific absorption rate sensor in the method embodiment of FIG. 1 , and will not be described again here to avoid repetition.

In an embodiment of the present application, when there is no human body within a preset distance range of the electronic device, the reference capacitance value is adjusted, and the first capacitance value is set to the reference capacitance value to eliminate the influence of the interference capacitance on the specific absorption rate sensor, so that the environmental capacitance value detected by the specific absorption rate sensor is more accurate.

Optionally, an embodiment of the present application further provides an electronic device, including a processor 310, a memory 309, and a program or instruction stored in the memory 309 and executable on the processor 310. When the program or instruction is executed by the processor 310, each process of the above-mentioned detection and processing method embodiment of the specific absorption rate sensor is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

FIG. 4 is a schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 300 includes but is not limited to: a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, a user input unit 307, an interface unit 308, a memory 309, and a processor 310.

Those skilled in the art will appreciate that the electronic device 300 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 310 through a power management system, so that the power management system can manage charging, discharging, and power consumption management. The electronic device structure shown in FIG4 does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown, or combine certain components, or arrange components differently, which will not be described in detail here.

The processor 310 is configured to transmit a first ultrasonic signal through an ultrasonic transmitter when the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than a first preset value;

Acquiring a second ultrasonic signal through an ultrasonic receiver;

determining whether a human body exists within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal;

When there is no human body within a preset distance range of the electronic device, the first capacitance value is set as a reference capacitance value.

Optionally, the processor 310 is further configured to obtain a detection duration of the specific absorption rate sensor when no human body exists within a preset distance range of the electronic device;

When the detection duration is greater than a preset duration, the first capacitance value is set as a reference capacitance value.

Optionally, the processor 310 is further configured to determine whether the electronic device is in a falling state;

When the electronic device is not in the falling state, a first ultrasonic signal is emitted by the ultrasonic transmitter.

Optionally, the processor 310 is further configured to obtain a first angular velocity, a second angular velocity, and a third angular velocity of the electronic device;

querying the first angular velocity, the second angular velocity, and the third angular velocity in a preset angular velocity table;

When the first angular velocity is within a first angular velocity range, the second angular velocity is within a second angular velocity range, and the third angular velocity is within a third angular velocity range, it is determined that the electronic device is in a falling state.

Optionally, the processor 310 is further configured to obtain a sending time corresponding to the first ultrasonic signal and a receiving time corresponding to the second ultrasonic signal;

Determine the difference between the receiving time and the sending time as a time difference value;

Calculating the product of the time difference and a preset sound speed value;

Dividing the product by a second preset value to obtain a distance value between the electronic device and the human body;

When the distance value is less than a third preset value, it is determined that there is no human body within the preset distance range of the electronic device.

In an embodiment of the present application, when there is no human body within a preset distance range of the electronic device, the reference capacitance value is adjusted, and the first capacitance value is set to the reference capacitance value to eliminate the influence of the interference capacitance on the specific absorption rate sensor, so that the environmental capacitance value detected by the specific absorption rate sensor is more accurate.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned detection and processing method embodiment of the specific absorption rate sensor is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned detection and processing method embodiment of the specific absorption rate sensor, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims (10)

1. A detection and processing method of a specific absorption rate sensor, characterized in that it is applied to an electronic device, wherein the electronic device comprises a specific absorption rate sensor, an ultrasonic transmitter and an ultrasonic receiver; the method comprises: When the difference between the first capacitance value detected by the specific absorption rate sensor and the reference capacitance value is greater than a first preset value, a first ultrasonic signal is emitted by the ultrasonic transmitter; and a second ultrasonic signal is acquired by the ultrasonic receiver; determining whether there is a human body within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal; When there is no human body within a preset distance range of the electronic device, setting the first capacitance value to a reference capacitance value; After determining whether there is a human body within a preset distance range of the electronic device, the method further includes: When there is no human body within a preset distance range of the electronic device, obtaining a detection duration of the specific absorption rate sensor; When the detection duration is longer than a preset duration, setting the first capacitance value to a reference capacitance value; Among them, the detection duration is the difference between the end time and the start time, the start time is the time corresponding to when the specific absorption rate sensor detects that the difference between the first capacitance value and the reference capacitance value is greater than the first preset value, and the end time is the time corresponding to when the electronic device determines that there is no human body within the preset distance range. 2. The method according to claim 1, characterized in that before transmitting the first ultrasonic signal by the ultrasonic transmitter, the method further comprises: Determining whether the electronic device is in a falling state; The transmitting of the first ultrasonic signal by the ultrasonic transmitter comprises: When the electronic device is not in the falling state, a first ultrasonic signal is emitted by the ultrasonic transmitter. 3. The method according to claim 2, wherein determining whether the electronic device is in a falling state comprises: Acquire a first angular velocity, a second angular velocity, and a third angular velocity of the electronic device, wherein the directions of the first angular velocity, the second angular velocity, and the third angular velocity are perpendicular to each other, the direction of the first angular velocity is perpendicular to a horizontal plane, and the directions of the second angular velocity and the third angular velocity are parallel to the horizontal plane; querying the first angular velocity, the second angular velocity, and the third angular velocity in a preset angular velocity table, wherein the angular velocity table stores a first angular velocity range, a second angular velocity range, and a third angular velocity range of the electronic device when the electronic device is in a falling state; When the first angular velocity is within the first angular velocity range, the second angular velocity is within the second angular velocity range, and the third angular velocity is within the third angular velocity range, it is determined that the electronic device is in a falling state. 4. The method according to claim 1, wherein determining whether a human body exists within a preset distance range of the electronic device according to the relationship between the first ultrasonic signal and the second ultrasonic signal comprises: Acquire a sending time corresponding to the first ultrasonic signal and a receiving time corresponding to the second ultrasonic signal; Determine the difference between the receiving time and the sending time as a time difference value; Calculating the product of the time difference and a preset sound speed value; Dividing the product by a second preset value to obtain a distance value between the electronic device and the human body; When the distance value is less than a third preset value, it is determined that there is no human body within the preset distance range of the electronic device. 5. A detection and processing device, characterized in that the device comprises: An ultrasonic transmitter, configured to transmit a first ultrasonic signal when a difference between a first capacitance value detected by the specific absorption rate sensor and a reference capacitance value is greater than a first preset value; An ultrasonic receiver, used for acquiring a second ultrasonic signal; A first determination module, configured to determine whether there is a human body within a preset distance range of the electronic device according to a relationship between the first ultrasonic signal and the second ultrasonic signal; A first processing module, configured to set the first capacitance value as a reference capacitance when no human body exists within a preset distance range of the electronic device; The device also includes: An acquisition module, configured to acquire a detection duration of the specific absorption rate sensor when no human body exists within a preset distance range of the electronic device; A second processing module, configured to set the first capacitance value to a reference capacitance value when the detection duration is greater than a preset duration; Among them, the detection duration is the difference between the end time and the start time, the start time is the time corresponding to when the specific absorption rate sensor detects that the difference between the first capacitance value and the reference capacitance value is greater than the first preset value, and the end time is the time corresponding to when the electronic device determines that there is no human body within the preset distance range. 6. The device according to claim 5, characterized in that the device further comprises: A second determination module, used to determine whether the electronic device is in a falling state; The ultrasonic transmitter is also used for: When the electronic device is not in the falling state, a first ultrasonic signal is emitted by the ultrasonic transmitter. 7. The device according to claim 6, wherein the second determining module is further used to: Acquire a first angular velocity, a second angular velocity, and a third angular velocity of the electronic device, wherein the directions of the first angular velocity, the second angular velocity, and the third angular velocity are perpendicular to each other, the direction of the first angular velocity is perpendicular to a horizontal plane, and the directions of the second angular velocity and the third angular velocity are parallel to the horizontal plane; querying the first angular velocity, the second angular velocity, and the third angular velocity in a preset angular velocity table, wherein the angular velocity table stores a first angular velocity range, a second angular velocity range, and a third angular velocity range of the electronic device when the electronic device is in a falling state; When the first angular velocity is within the first angular velocity range, the second angular velocity is within the second angular velocity range, and the third angular velocity is within the third angular velocity range, it is determined that the electronic device is in a falling state. 8. The device according to claim 5, wherein the first determining module is further configured to: Acquire a sending time corresponding to the first ultrasonic signal and a receiving time corresponding to the second ultrasonic signal; Determine the difference between the receiving time and the sending time as a time difference value; Calculating the product of the time difference and a preset sound speed value; Dividing the product by a second preset value to obtain a distance value between the electronic device and the human body; When the distance value is greater than a third preset value, it is determined that a human body exists within the preset distance range of the electronic device. 9. An electronic device, characterized in that it comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method as described in any one of claims 1 to 4. 10. A readable storage medium, characterized in that the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.