电磁波能量吸收比处理方法及移动终端 技术领域 本发明涉及通信领域，具体而言，涉及一种电磁波能量吸收比（Specific Absorption Rate, 简称为 SAR) 处理方法及移动终端。 背景技术 移动终端 （例如， 手机） 已经成为不可缺少的通讯工具。 同时， 移动终端的发射 对人体的辐射影响也越来越受到了各个国家和组织的重视。 目前， 在移动终端认证中， SAR测试也是个很重要的指标， SAR达标对产品的约 束大大降低了实际产品对人体的辐射。 但是， 在实际应用中， 移动终端大部分是处于 移动状态， 随着网络环境的变化和移动终端离人体部位 （例如， 头部） 的变化， SAR 值也在动态的变化中， 在某些情况下会出现超标情况， 对人体产生不良影响。 发明内容 本发明提供了一种吸收率处理方法及移动终端， 以至少解决上述问题。 根据本发明的一个方面， 提供了一种电磁波能量吸收比的处理方法， 包括： 移动 终端获取使用该移动终端的用户的人体部位到所述移动终端的距离和所述移动终端的 发射功率；所述移动终端根据所述距离和所述发射功率获取电磁波能量吸收比 SAR的 值； 所述移动终端在所述 SAR的值超过阈值的情况下， 发出降低发射功率的命令和 / 或向所述用户提示。 优选地， 所述移动终端在所述 SAR的值超过所述阈值的情况下， 发出降低发射功 率的命令； 所述移动终端在执行发出降低发射功率的命令超过预定次数， 并且每次发 出降低发射功率的命令之后再次获取的 SAR值均超过所述阈值的情况下，向所述用户 提示。 优选地， 所述移动终端根据其所使用的频段确定系数， 并使用该系数、 所述距离 和所述 SAR的值。
优选地， 所述移动终端根据所述距离和所述 SAR的值包括： 所述移动终端根据所 述人体部位中的 SAR最大点到所述移动终端上的辐射最强点之间的距离和所述发射 功率获取所述 SAR的值。 优选地，所述移动终端根据以下公式获取所述 SAR的值： 所述 SAR=P/(Xa+Xb)2， 或者， 所述 SAR=K*P/(Xa+Xb)2， 其中， Xa为所述移动终端测量得到的所述移动终端 到所述人体部位的边缘的距离， 所述 Xb为所述人体部位中的 SAR最大点到所述人体 部位边缘的距离， P为所述移动终端的发射功率， K为根据所述移动终端所使用的频 段确定的系数。 优选地， 所述移动终端向所述用户提示包括以下至少之一： 提示所述用户更换使 用所述移动终端环境、 提示所述用户更换使用所述移动终端的方式。 根据本发明的另一方面， 提供了一种移动终端， 包括： 参数获取模块， 设置为获 取使用该移动终端的用户的人体部位到所述移动终端的距离和所述移动终端的发射功 率； SAR获取模块， 设置为根据所述距离和所述发射功率获取 SAR的值； 处理模块， 设置为在所述 SAR的值超过阈值的情况下， 发出降低发射功率的命令和 /或向所述用 户提示。 优选地， 所述处理模块， 设置为在执行发出降低发射功率的命令超过预定次数， 并且每次发出降低发射功率的命令之后再次获取的 SAR值均超过所述阈值的情况下， 向所述用户提示。 优选地， 所述 SAR获取模块， 设置为根据所述人体部位中的 SAR最大点到所述 移动终端上的辐射最强点之间的距离和所述发射功率获取所述 SAR的值。 优选地， 所述 SAR 获取模块设置为根据以下公式获取所述 SAR 的值： 所述 SAR=P/(Xa+Xb)2, 或者， 所述 SAR=K*P/(Xa+Xb)2， 其中， Xa为所述移动终端测量得 到的所述移动终端到所述人体部位的边缘的距离， 所述 Xb为所述人体部位中的 SAR 最大点到所述人体部位边缘的距离， P为所述移动终端的发射功率， K为根据所述移 动终端所使用的频段确定的系数。 通过本发明， 采用移动终端获取使用该移动终端的用户的人体部位到移动终端的 距离和移动终端的发射功率； 移动终端根据距离和发射功率获取吸收率 SAR的值； 移 动终端在 SAR的值超过阈值的情况下， 发出降低发射功率的命令和 /或向用户提示。 解决了现有技术中 SAR会出现超标从而对人体产生影响的问题，进而在一定程度上保 护移动终端的使用者。
附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中： 图 1是根据本发明实施例的 SAR处理方法的流程图； 图 2是根据本发明实施例的 Xb的计算方法的示意图； 图 3是根据本发明实施例的移动终端的结构框图； 图 4是根据本发明实施例的 SAR监测的优选流程图； 图 5是根据本发明实施例的 SAR检测处理程序的结构框图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 情况下， 本申请中的实施例及实施例中的特征可以相互组合。 图 1是根据本发明实施例的 SAR处理方法的流程图， 如图 1所示， 该流程包括如 下步骤： 步骤 S102，移动终端获取使用该移动终端的用户的人体部位到移动终端的距离和 移动终端的发射功率； 步骤 S104, 移动终端根据距离和发射功率获取吸收率 SAR的值； 步骤 S106, 移动终端在 SAR的值超过阈值的情况下， 发出降低发射功率的命令 和 /或向用户提示。 由于在现有技术中， 移动终端设计或制造者均没有注意到， 移动终端在某些情况 下会出现 SAR值超标的情况， 因此， 现有技术中的移动终端并没有检测 SAR值的功 能。 通过上述步骤， 在移动终端中增加了检测 SAR的功能， 并且还能够在 SAR超过 阈值时进行相应的处理， 从而起到对人体保护的作用。 优选地， 在实施时， 移动终端可以根据距离和发射功率来计算 SAR值， 另外， 在 计算的时候也可以考虑该移动终端所使用的频段。 当然， 为了使 SAR的值更加精确， 移动终端可以根据人体部位中的 SAR最大点到该移动终端上的辐射最强点之间的距
离来得到该 SAR值。 需要说明的是， 对于体积比较小的移动终端， 到移动终端上的辐 射最强点可以认为就是到该移动终端的距离。 SAR最大点和移动终端上的辐射最强点 的确认可以在实验室中测得， 该值得到的过程与本实施例无关， 在此不再赘述。 以下 以举例的方式说明两种计算 SAR值的公式。 对于能够体现 SAR与功率成正比与距离 成反比的其他公式也可以适用。 公式一， SAR=P/(Xa+Xb)2; 公式二， SAR=K*P/(Xa+Xb)2， 其中， Xa为移动终端 测量得到的移动终端到人体部位的边缘的距离， Xb为人体部位中的 SAR最大点到人 体部位边缘的距离， P为移动终端的发射功率， K为根据移动终端所使用的频段确定 的系数。 需要说明的是， Xb可以在也可以在实验室中测得， 图 2是根据本发明实施例 的 Xb的计算方法的示意图， 如图 2所示， 在实验室中可以测得移动终端的辐射最强 点 D点到人体部位中的 SAR最大点 C点的距离 b，同时可以通过手机上的测距装置得 到 D点到人体部位边缘的距离 a， 从而 Xb=b-a。 优选地， 如果不考虑 Xb的距离， 即 Xb为 0， 则上述公式中的 Xa+Xb实际就是 Xa。 优选地， 在实施时， 也可以不在移动终端中添加计算功能， 而指示根据预先得到 的距离、 发射功率与 SAR值的关系直接确定在某个距离和发射功率下的 SAR值， 该 实现方式相对于上述实施计算的方式实现要简单， 但是需要在实验室进行比较多的工 作， 使距离、 发射功率与 SAR值的对应关系尽可能的详细， 这样会在实际使用时更加 精确。 优选地， 在发出降低发射功率的命令之后， 终端有可能需要保证通话质量因而发 射功率的降低很少或者没有降低， 此时， 移动终端可以在执行发出降低发射功率的命 令超过预定次数，并且每次发出降低发射功率的命令之后再次获取的 SAR值均超过阈 值的情况下， 向用户进行提示。 例如， 可以提示用户更换使用移动终端环境， 也可以 提示用户更换使用移动终端的方式。 图 3是根据本发明实施例的移动终端的结构框图， 如图 3所示， 该结构包括： 参 数获取模块 32、 SAR获取模块 34、 处理模块 36， 下面对此进行说明。 参数获取模块 32， 用于 （或称为设置为）获取使用该移动终端的用户的人体部位 到移动终端的距离和移动终端的发射功率； SAR获取模块 34连接至参数获取模块 32， 用于根据距离和发射功率获取吸收率 SAR的值； 处理模块 36连接至 SAR获取模块 34, 用于在 SAR的值超过阈值的情况下， 发出降低发射功率的命令和 /或向用户提示。
优选地， 处理模块 36用于在执行发出降低发射功率的命令超过预定次数， 并且每 次发出降低发射功率的命令之后再次获取的 SAR值均超过阈值的情况下， 向用户提 示。 优选地， SAR获取模块 34用于根据人体部位中的 SAR最大点到移动终端上的辐 射最强点之间的距离和发射功率获取 SAR的值。 优选地， SAR获取模块 34用于根据以下公式获取 SAR的值： TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method for processing an electromagnetic wave energy absorption ratio (SAR) and a mobile terminal. BACKGROUND OF THE INVENTION Mobile terminals (e.g., mobile phones) have become an indispensable communication tool. At the same time, the radiation effects of the mobile terminal's emission on the human body are increasingly being valued by various countries and organizations. At present, SAR testing is also an important indicator in mobile terminal authentication. The SAR compliance standard greatly reduces the radiation of actual products to the human body. However, in practical applications, most of the mobile terminals are in a mobile state. As the network environment changes and the mobile terminal changes from the human body part (for example, the head), the SAR value also changes dynamically, in some cases. Exceeding the standard will cause adverse effects on the human body. SUMMARY OF THE INVENTION The present invention provides an absorption rate processing method and a mobile terminal to solve at least the above problems. According to an aspect of the present invention, a method for processing an electromagnetic wave energy absorption ratio is provided, comprising: a mobile terminal acquiring a distance from a human body part of a user using the mobile terminal to the mobile terminal and a transmission power of the mobile terminal; The mobile terminal acquires a value of the electromagnetic wave energy absorption ratio SAR according to the distance and the transmission power; the mobile terminal issues a command to reduce the transmission power and/or to the user if the value of the SAR exceeds a threshold prompt. Preferably, the mobile terminal issues a command to reduce the transmit power if the value of the SAR exceeds the threshold; the mobile terminal performs a command to send a reduced transmit power for more than a predetermined number of times, and each time a reduced transmission is sent If the SAR value acquired again after the power command exceeds the threshold value, the user is prompted. Preferably, the mobile terminal determines a coefficient according to a frequency band used by the mobile terminal, and uses the coefficient, the distance, and a value of the SAR. Preferably, the mobile terminal according to the distance and the value of the SAR comprises: a distance between the SAR maximum point in the human body part and a radiation strongest point on the mobile terminal according to the mobile terminal The transmit power obtains the value of the SAR. Preferably, the mobile terminal acquires the value of the SAR according to the following formula: the SAR=P/(Xa+Xb) 2 , or the SAR=K*P/(Xa+Xb) 2 , where Xa The distance from the mobile terminal to the edge of the human body part measured by the mobile terminal, where Xb is the distance from the SAR maximum point in the human body part to the edge of the human body part, and P is the mobile terminal The transmission power, K, is a coefficient determined according to the frequency band used by the mobile terminal. Preferably, the mobile terminal prompts the user to include at least one of the following: prompting the user to replace the use of the mobile terminal environment, prompting the user to replace the use of the mobile terminal. According to another aspect of the present invention, a mobile terminal is provided, including: a parameter acquisition module, configured to acquire a distance from a human body part of a user using the mobile terminal to the mobile terminal and a transmit power of the mobile terminal; Obtaining a module, configured to acquire a value of the SAR according to the distance and the transmit power; and the processing module is configured to issue a command to reduce the transmit power and/or prompt the user if the value of the SAR exceeds a threshold . Preferably, the processing module is configured to, when the command to send the reduced transmit power is performed more than a predetermined number of times, and the SAR value acquired again after each command to reduce the transmit power exceeds the threshold, to the user prompt. Preferably, the SAR acquisition module is configured to acquire a value of the SAR according to a distance between a SAR maximum point in the human body part and a radiation strongest point on the mobile terminal and the transmission power. Preferably, the SAR obtaining module is configured to obtain the value of the SAR according to the following formula: the SAR=P/(Xa+Xb) 2 , or the SAR=K*P/(Xa+Xb) 2 , Wherein Xa is the distance of the mobile terminal measured by the mobile terminal to the edge of the human body part, and the Xb is the distance from the SAR maximum point in the human body part to the edge of the human body part, P is The transmission power of the mobile terminal, K is a coefficient determined according to the frequency band used by the mobile terminal. According to the present invention, the mobile terminal acquires the distance from the human body part of the user using the mobile terminal to the mobile terminal and the transmission power of the mobile terminal; the mobile terminal acquires the value of the absorption rate SAR according to the distance and the transmission power; the value of the mobile terminal in the SAR exceeds In the case of a threshold, a command to reduce the transmit power is issued and/or a prompt is presented to the user. The problem that the SAR may exceed the standard in the prior art and affect the human body is solved, thereby protecting the user of the mobile terminal to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a flowchart of a SAR processing method according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a calculation method of Xb according to an embodiment of the present invention; and FIG. 3 is a structure of a mobile terminal according to an embodiment of the present invention. 4 is a preferred flowchart of SAR monitoring according to an embodiment of the present invention; and FIG. 5 is a structural block diagram of a SAR detection processing program according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a flowchart of a SAR processing method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps: Step S102: A mobile terminal acquires a distance and a movement of a human body part of a user using the mobile terminal to a mobile terminal. The transmitting power of the terminal is obtained. Step S104: The mobile terminal acquires the value of the absorption rate SAR according to the distance and the transmitting power. Step S106: The mobile terminal issues a command to reduce the transmitting power and/or prompts the user if the value of the SAR exceeds the threshold. Since in the prior art, neither the mobile terminal design nor the manufacturer notices that the mobile terminal may exceed the SAR value in some cases, the mobile terminal in the prior art does not have the function of detecting the SAR value. Through the above steps, the function of detecting the SAR is added to the mobile terminal, and the corresponding processing can also be performed when the SAR exceeds the threshold value, thereby functioning as a human body protection. Preferably, in implementation, the mobile terminal can calculate the SAR value according to the distance and the transmit power, and in addition, the frequency band used by the mobile terminal can also be considered in the calculation. Of course, in order to make the value of the SAR more precise, the mobile terminal can according to the distance between the SAR maximum point in the body part and the strongest point on the mobile terminal. The SAR value is obtained by leaving. It should be noted that, for a mobile terminal with a relatively small volume, the strongest point of radiation to the mobile terminal can be regarded as the distance to the mobile terminal. The confirmation of the maximum point of the SAR and the strongest point of the radiation on the mobile terminal can be measured in the laboratory, and the process of obtaining the value is not related to the embodiment, and details are not described herein again. The following two formulas for calculating the SAR value are illustrated by way of example. Other formulas that reflect the fact that SAR is proportional to power and inversely proportional to distance are also applicable. Formula 1, SAR=P/(Xa+Xb) 2 ; Formula 2, SAR=K*P/(Xa+Xb) 2 , where Xa is the distance from the mobile terminal to the edge of the human body part measured by the mobile terminal, Xb For the distance from the SAR maximum point in the human body part to the edge of the human body part, P is the transmission power of the mobile terminal, and K is a coefficient determined according to the frequency band used by the mobile terminal. It should be noted that Xb can also be measured in the laboratory. FIG. 2 is a schematic diagram of a calculation method of Xb according to an embodiment of the present invention. As shown in FIG. 2, the radiation of the mobile terminal can be measured in the laboratory. The strongest point D is the distance b from the maximum point C of the SAR in the human body part. At the same time, the distance a from the point D to the edge of the human body part can be obtained by the distance measuring device on the mobile phone, so that Xb=ba. Preferably, if the distance of Xb is not considered, that is, Xb is 0, Xa+Xb in the above formula is actually Xa. Preferably, in implementation, the computing function may not be added to the mobile terminal, and the SAR value at a certain distance and the transmit power may be directly determined according to the relationship between the distance, the transmit power and the SAR value obtained in advance, and the implementation manner is relatively The implementation of the above calculation method is simple, but more work needs to be done in the laboratory, so that the correspondence between the distance, the transmission power and the SAR value is as detailed as possible, which is more accurate in actual use. Preferably, after issuing a command to reduce the transmission power, the terminal may need to ensure the quality of the call, and thus the reduction of the transmission power is little or not reduced. At this time, the mobile terminal may perform the command to issue the reduced transmission power for more than a predetermined number of times, and each time When the SAR value acquired again after issuing the command to reduce the transmission power exceeds the threshold value, the user is prompted. For example, the user may be prompted to replace the mobile terminal environment, or the user may be prompted to replace the mobile terminal. FIG. 3 is a structural block diagram of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 3, the structure includes: a parameter obtaining module 32, a SAR obtaining module 34, and a processing module 36, which will be described below. The parameter obtaining module 32 is configured to acquire (or is set to) a distance of the human body part of the user using the mobile terminal to the mobile terminal and a transmission power of the mobile terminal; the SAR obtaining module 34 is connected to the parameter obtaining module 32, and configured to The distance and transmit power obtains the value of the absorbance SAR; the processing module 36 is coupled to the SAR acquisition module 34 for issuing a command to reduce the transmit power and/or to prompt the user if the value of the SAR exceeds a threshold. Preferably, the processing module 36 is configured to prompt the user if the command to issue the reduced transmit power exceeds the predetermined number of times and the SAR value acquired again after each command to reduce the transmit power exceeds the threshold. Preferably, the SAR acquisition module 34 is configured to acquire the value of the SAR according to the distance between the SAR maximum point in the body part and the radiation strongest point on the mobile terminal and the transmission power. Preferably, the SAR acquisition module 34 is configured to obtain the value of the SAR according to the following formula:
SAR=P/(Xa+Xb)2, 或者， SAR=K*P/CXa+Xb)2， 其中， Xa为移动终端测量得到的 移动终端到人体部位的边缘的距离， Xb为人体部位中的 SAR最大点到人体部位边缘 的距离， P为移动终端的发射功率， K为根据移动终端所使用的频段确定的系数。 通过上述实施例，在实际环境中实时监测 SAR的热点，当超标时先降低发射功率， 如果降低功率后还不行则发出警告， 提示用户更改使用环境（如换个地点）、使用方式 (如使用免提功能或耳机等）， 在最大程度上保护使用者。 在以下的一个优选实施例中，提供了一种在移动终端中实时检测 SAR值对人体提 供保护的方法。 该方法包括如下步骤： 步骤 S202, 在权威实验室测得本移动终端对人体部位（如头部、 腿部等） 的 SAR 值，得到 SAR最大值及最大值时的点 C、终端上的热点 D (辐射最强点）、热点离 SAR 探测头的距离等， 作为本实施例启用的初始值； 步骤 S204, 在终端的热点位置上启用距离探测组件， 以便实时采集移动终端到人 体的距离， 提供给监测软件进行实时处理； 步骤 S206, 利用 SAR最大值， 移动终端到人体部位的距离 Xa加上人体表面到实 验室测得 SAR最大点的距离即热点离 SAR探测头的距离 Xb，在通信过程中移动终端 发射的功率等信息， 通过 SAR值监测软件进行处理， 得到此时实际最大的 SAR值， 并进行判断， 如果超值则进行相应处理， 如先降低发射功率后告警提示等。 其中， 本实施例的移动终端是具有实时监测和人体的距离的功能， 移动终端是在 认证实验室中采集了热点， 并有原始数据阵列的移动终端。 在本实施例中， 通过对软 件进行编译， 加入在移动终端界面中可以运行实时监测 SAR值的软件。通过对软件进 行调试， 使移动终端监测高精度的 SAR值。
本实施例中， 采用的是在移动终端软件中加入实时监测 SAR值， 并在超标时报警 的方式来实现对人体 SAR保护的方法。本实施例在移动软件中加入实时监测软件， 在 移动终端中加入监测终端离人体距离， 加上在认证实验室中采集到的原始数据， 通过 算法监测 SAR值的实时变动， 当 SAR超标时先降低发射功率， 如果降低发射功率不 行则提出告警， 对人体进行保护， 提示用户更改使用环境（例如， 换个地点）、 使用方 式 （例如， 使用免提功能或耳机等）， 在最大程度上保护用户。 下面结合附图对优选实施例进行说明。 在实验室测得本移动终端对人体部位 （如头部、 腿部等） 的 SAR值， 得到 SAR 最差值 （或者称为最大值）、 终端上的热点 d (辐射最强点）、 热点离 SAR探测头 c的 距离 b等， 作为本实施例启用的初始值， 在移动终端中加入实时监测软件和监测终端 离人体距离的测距组件 d，加上在认证实验室中采集到的原始数据，通过算法监测 SAR 值的实时变动， 当超标时先降低发射功率， 如果不行就告警， 以便用户改变使用环境、 使用方式。 移动终端通过软件操作， 当开始通话时检测用户是否用耳机、 是否免提通话等， 如果不是则打开监测 SAR软件， 此时默认同时打开测距功能， 实时采集到移动终端热 点离人体的距离 a， 实时截取此时移动终端的发射功率 TRP， 作为实时监测 SAR程序 的输入， 根据不同的频段调用不同的 KQ系数。 移动终端的监测软件处理数据， 并对结果进行相应处理。 当 SAR超标时先降低发 射功率， 如果降低发射功率不行则提出告警， 对人体进行保护， 提示用户更改使用环 境 （如换个地点）、 使用方式 （如使用免提功能或耳机等）， 在最大程度上保护用户。 下面对 SAR值的计算进行说明。 SAR=P/(Xa+Xb) 2 , or SAR=K*P/CXa+Xb) 2 , where Xa is the distance measured by the mobile terminal from the mobile terminal to the edge of the human body part, and Xb is the part of the human body part. The distance from the SAR maximum point to the edge of the human body part, P is the transmission power of the mobile terminal, and K is the coefficient determined according to the frequency band used by the mobile terminal. Through the above embodiments, the SAR hotspot is monitored in real time in the actual environment. When the over-standard is exceeded, the transmit power is first reduced. If the power is not restored, a warning is issued to prompt the user to change the usage environment (such as changing a location) and the usage mode (such as using Lifting features or headphones, etc., to protect users to the greatest extent possible. In a preferred embodiment below, a method of providing real-time detection of SAR values in a mobile terminal to provide protection to the human body is provided. The method includes the following steps: Step S202: The SAR value of the mobile terminal to the human body part (such as the head, the leg, etc.) is measured in an authoritative laboratory, and the point C of the SAR maximum value and the maximum value is obtained, and the hot spot on the terminal D (the strongest point of radiation), the distance of the hotspot from the SAR probe, etc., as the initial value enabled in this embodiment; Step S204, the distance detecting component is enabled at the hot spot position of the terminal, so as to collect the distance of the mobile terminal to the human body in real time, Providing the monitoring software for real-time processing; Step S206, using the SAR maximum value, the distance Xa of the mobile terminal to the human body part plus the distance from the human body surface to the maximum point of the SAR measured by the laboratory, that is, the distance Xb of the hotspot from the SAR detecting head, in communication The information such as the power transmitted by the mobile terminal in the process is processed by the SAR value monitoring software to obtain the actual maximum SAR value at this time, and the judgment is made. If the value is exceeded, the corresponding processing is performed, such as first reducing the transmission power and then alerting. The mobile terminal in this embodiment has the function of real-time monitoring and distance from the human body, and the mobile terminal is a mobile terminal that collects hotspots in the authentication laboratory and has an original data array. In this embodiment, by compiling the software, software that can monitor the SAR value in real time can be added in the mobile terminal interface. By debugging the software, the mobile terminal monitors the high-precision SAR value. In this embodiment, a method for realizing SAR protection by adding real-time monitoring SAR value to the mobile terminal software and alarming when the standard exceeds the standard is adopted. In this embodiment, the real-time monitoring software is added to the mobile software, and the distance between the monitoring terminal and the human body is added to the mobile terminal, and the original data collected in the authentication laboratory is added, and the real-time variation of the SAR value is monitored by an algorithm, when the SAR exceeds the standard Reduce the transmission power. If the transmission power is not reduced, an alarm is issued to protect the human body, prompting the user to change the usage environment (for example, changing a location), using the method (for example, using hands-free functions or headphones, etc.) to protect the user to the greatest extent. . The preferred embodiments are described below in conjunction with the drawings. In the laboratory, the SAR value of the mobile terminal to the human body part (such as the head, the leg, etc.) is measured, and the SAR worst value (or maximum value), the hot spot d on the terminal (the strongest radiation point), and the hot spot are obtained. The distance b from the SAR probe c, etc., as the initial value enabled in this embodiment, the real-time monitoring software and the ranging component d for monitoring the distance of the terminal from the human body are added to the mobile terminal, plus the original collected in the certification laboratory. Data, through the algorithm to monitor the real-time variation of the SAR value, when the over-standard is used, the transmission power is first reduced, and if not, the alarm is generated, so that the user can change the usage environment and the usage mode. The mobile terminal operates through software. When the call starts, it detects whether the user uses the headset, whether it is a hands-free call, etc. If not, the monitoring SAR software is turned on. At this time, the ranging function is turned on by default, and the distance of the mobile terminal hotspot from the human body is collected in real time. The real-time interception of the mobile terminal's transmit power TRP at this time is used as an input for real-time monitoring of the SAR program, and different K Q coefficients are called according to different frequency bands. The monitoring software of the mobile terminal processes the data and processes the results accordingly. When the SAR exceeds the standard, the transmission power is first reduced. If the transmission power is not reduced, an alarm is issued to protect the human body, prompting the user to change the usage environment (such as changing a location), using the method (such as using a hands-free function or a headset), to the maximum extent. Protect users. The calculation of the SAR value will be described below.
SAR的测算公式如下： SAR=oEi2/p, Ei为细胞组织中的电场强度有效值， 以 V / m表示； σ为人体组织的电导率， 以 S / m表示； p为人体组织密度， 以 kg / m3表示； 在某个移动终端使用的场合下， σ、 ρ都是一定的。 SAR=K0xP/ (Xa+b-a) 2 在某一固定位置， 将移动终端通信时的发射功率 P采集到， 然后再通过测距组件 测到距离 Xa， 则 c点到 d点的距离为 Xa+b-a。 将上一步得到的 P和 Xa+b-a代入公式 1 中得到此时 SAR值， 与 SAR的允许最大值进行判断， 如果大于最大值则优先减低 发射功率， 然后再进行上一步操作。 如果降低发射功率并没有有效降低 SAR值， 则进
行报警， 目的是提示用户更改通话， 或使手机远离身体、 或免提通话、 或使用耳机、 或结束本次通话等。 图 4是根据本发明实施例的 SAR监测的优选流程图， 下面结合图 4进行说明。 在通话开始的时间就运行 SAR检测程序， 先进行通话方式判断， 如果用户不使用 耳机、 蓝牙或免提通话， 则继续运行检测程序， 反之则不运行。 检测程序检测到此时 手机的发射功率 P， 并利用测距模块检测热点 D点到人体的距离 Xa; 将采集到的数据 代入的算法公式 1中， 得到此时 SAR的值 SARx, 然后进行判断， 如果 SARx小于等 于在实验室测的最大值 SAR0, 则认为这时 SAR正常， 程序循环到开始阶段再实时进 行检测； 如果 SARx大于 SAR0, 在进行检测次数判断后， 如果本次判断还在设定的 ηθ次数内， 则降低发射功率， 之后再采集此时的发射功率和距离 Xa进行 SAR检测判 断； 如果本次判断超出了设定的 ηθ判断次数， 则启动告警， 提示用户更改通话方式， 或免提通话、 或使用耳机， 或结束本次通话。 如果启用上述措施， 则不运行 SAR检测 程序。 图 5是根据本发明实施例的 SAR检测处理程序的结构框图， 该结构包括： 通话方 式检测模块、 数据采集模块 （相当于参数获取模块 32)、 SAR计算判断模块 （相当于 SAR获取模块 34 ) 和告警模块 （相当于处理模块 36)。 通话方式检测模块是程序运行开始的时候检测用户用什么方式通话， 如果不使用 耳机、 蓝牙或免提通话， 则检测程序不运行； 数据采集模块是采集通话过程中的发射 功率和热点到人体的距离； SAR计算判断模块是根据采集到的数据计算此时 SAR值， 然后和通过认证时的最大值 SAR0进行判断处理， 同时兼顾判断次数， 不能无限制循 环； 告警模块是在 SAR超标的情况下， 提示用户 SAR超标， 提示用户优选通话方式： 免提、 耳机或者结束本次通话。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以 将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处 的顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任 何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。
The calculation formula of SAR is as follows: SAR=oEi 2 /p, Ei is the effective value of electric field strength in cell tissue, expressed in V / m; σ is the conductivity of human tissue, expressed in S / m; p is the density of human tissue, It is expressed in kg / m 3 ; in the case of a mobile terminal, σ and ρ are both constant. SAR=K 0 xP/ (Xa+ba) 2 At a fixed position, the transmission power P of the mobile terminal is collected, and then the distance Xa is measured by the ranging component, then the distance from point c to point d is Xa+ba. Substituting P and Xa+ba obtained in the previous step into Equation 1 obtains the SAR value at this time, and judges the allowable maximum value of SAR. If it is greater than the maximum value, the transmission power is preferentially reduced, and then the previous operation is performed. If reducing the transmit power does not effectively reduce the SAR value, then The purpose of the alarm is to prompt the user to change the call, or to keep the phone away from the body, or to hands-free calls, or to use headphones, or to end the call. 4 is a preferred flow diagram of SAR monitoring in accordance with an embodiment of the present invention, which is described below in conjunction with FIG. The SAR detection program is run at the beginning of the call, and the call mode is judged first. If the user does not use the headset, Bluetooth or hands-free call, the detection program continues to run, and vice versa. The detection program detects the transmission power P of the mobile phone at this time, and uses the ranging module to detect the distance Xa of the hot spot D to the human body; the algorithm 1 is substituted into the algorithm, and the SAR value SARx is obtained, and then the judgment is performed. If the SARx is less than or equal to the maximum value of SAR0 measured in the laboratory, it is considered that the SAR is normal at this time, and the program loops to the beginning stage to perform real-time detection; if SARx is greater than SAR0, after the judgment of the number of detections, if this judgment is still set Within a predetermined number of ηθ, the transmission power is reduced, and then the transmission power at the time and the distance Xa are collected for SAR detection and judgment; if the current judgment exceeds the set number of ηθ determinations, an alarm is activated to prompt the user to change the call mode. Or hands-free calling, or using a headset, or ending this call. If the above measures are enabled, the SAR detection program is not run. FIG. 5 is a structural block diagram of a SAR detection processing program according to an embodiment of the present invention. The structure includes: a call mode detection module, a data acquisition module (corresponding to the parameter acquisition module 32), and a SAR calculation and determination module (corresponding to the SAR acquisition module 34). And alarm module (equivalent to processing module 36). The call mode detection module detects when the program starts to detect the user's call. If the headset, Bluetooth or hands-free call is not used, the test program does not run; the data acquisition module collects the transmit power and hotspot to the human body during the call. The SAR calculation judgment module calculates the SAR value according to the collected data, and then performs judgment processing with the maximum value SAR0 at the time of authentication, and takes into consideration the number of judgments, and cannot be looped without restriction; the alarm module is in the case of SAR exceeding the standard The user is prompted to exceed the SAR, prompting the user to prefer the call mode: handsfree, headset or end the call. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.