CN101980564A - Specific absorption rate processing method and mobile terminal - Google Patents
Specific absorption rate processing method and mobile terminal Download PDFInfo
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- CN101980564A CN101980564A CN201010507077XA CN201010507077A CN101980564A CN 101980564 A CN101980564 A CN 101980564A CN 201010507077X A CN201010507077X A CN 201010507077XA CN 201010507077 A CN201010507077 A CN 201010507077A CN 101980564 A CN101980564 A CN 101980564A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
Abstract
The invention discloses a specific absorption rate processing method and a mobile terminal. The method comprises that: the mobile terminal acquires a distance between a human body part of a user using the mobile terminal and the mobile terminal, and the transmitting power of the mobile terminal; the mobile terminal acquires a value of a specific absorption rate SAR according to the distance and the transmitting power; and the mobile terminal transmits a command for reducing the transmitting power and/or prompts the user under the condition that the value of the SAR is greater than a threshold value. The invention protects the user of the mobile terminal to a certain extent.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of electromagnetic wave energy absorptance (Specific Absorption Rate abbreviates SAR as) processing method and portable terminal.
Background technology
Portable terminal (for example, mobile phone) has become indispensable communication tool.Simultaneously, the emission of portable terminal also more and more has been subjected to the attention of each country and tissue to the radiation effect of human body.
At present, in mobile terminal authentication, the SAR test also is individual very important index, and the SAR constraint to product up to standard greatly reduces the radiation of actual product to human body.But in actual applications, the portable terminal major part is to be in mobile status, (for example, head) variation, SAR value are also in dynamic the variation from human body along with the variation of network environment and portable terminal, the situation of exceeding standard can occur in some cases, can produce harmful effect human body.
Summary of the invention
Main purpose of the present invention is to provide a kind of absorptivity processing method and portable terminal, to address the above problem at least.
According to an aspect of the present invention, provide a kind of processing method of electromagnetic wave energy absorptance, having comprised: portable terminal obtains the human body that uses this mobile terminal user and arrives the distance of described portable terminal and the transmitting power of described portable terminal; Described portable terminal obtains the value of electromagnetic wave energy absorptance SAR according to described distance and described transmitting power; Described portable terminal surpasses under the situation of threshold value in the value of described SAR, sends the order that reduces transmitting power and/or to described user prompt.
Further, described portable terminal surpasses under the situation of described threshold value in the value of described SAR, sends the order that reduces transmitting power; Described portable terminal sends the order that reduces transmitting power in execution and surpasses pre-determined number, and sends the SAR value obtained once more after the order that reduces transmitting power all under the situation above described threshold value, to described user prompt at every turn.
Further, described portable terminal is determined coefficient according to its employed frequency range, and uses the value of this coefficient, described distance and described SAR.
Further, described portable terminal comprises according to the value of described distance and described SAR: the value that described portable terminal obtains described SAR according to the distance between the radiation point of maximum intensity of the SAR maximum point in the described human body to the described portable terminal and described transmitting power.
Further, described portable terminal obtains the value of described SAR according to following formula: described SAR=P/ (Xa+Xb) 2, perhaps, described SAR=K*P/ (Xa+Xb) 2, wherein, Xa is the distance of the described portable terminal that measures of described portable terminal to the edge of described human body, and described Xb is that SAR maximum point in the described human body is to the distance at described human body edge, P is the transmitting power of described portable terminal, and K is the coefficient of determining according to the employed frequency range of described portable terminal.
Further, described portable terminal to described user prompt comprise following one of at least: point out described user to change and use described portable terminal environment, the described user of prompting to change the mode of using described portable terminal.
According to a further aspect in the invention, provide a kind of portable terminal, having comprised: parameter acquisition module is used to obtain the human body that uses this mobile terminal user and arrives the distance of described portable terminal and the transmitting power of described portable terminal; The SAR acquisition module is used for obtaining according to described distance and described transmitting power the value of SAR; Processing module is used for surpassing under the situation of threshold value in the value of described SAR, sends the order that reduces transmitting power and/or to described user prompt.
Further, described processing module is used for sending the order that reduces transmitting power in execution and surpasses pre-determined number, and sends the SAR value obtained once more after the order that reduces transmitting power all under the situation above described threshold value, to described user prompt at every turn.
Further, described SAR acquisition module is used for the value of obtaining described SAR according to the distance between the SAR maximum point of the described human body radiation point of maximum intensity to the described portable terminal and described transmitting power.
Further, described SAR acquisition module is used for obtaining according to following formula the value of described SAR: described SAR=P/ (Xa+Xb) 2, perhaps, described SAR=K*P/ (Xa+Xb) 2, wherein, Xa is the distance of the described portable terminal that measures of described portable terminal to the edge of described human body, described Xb is the distance that the SAR maximum point in the described human body arrives described human body edge, P is the transmitting power of described portable terminal, and K is the coefficient of determining according to the employed frequency range of described portable terminal.
By the present invention, adopt portable terminal to obtain the human body of this mobile terminal user of use to the distance of portable terminal and the transmitting power of portable terminal; Portable terminal obtains the value of absorptivity SAR according to distance and transmitting power; Portable terminal surpasses under the situation of threshold value in the value of SAR, sends the order that reduces transmitting power and/or to user prompt.The problem that exceeds standard human body is exerted an influence can occur thereby solved SAR in the prior art, and then protect the user of portable terminal to a certain extent.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the SAR processing method of the embodiment of the invention;
Fig. 2 is the schematic diagram according to the computational methods of the Xb of the embodiment of the invention;
Fig. 3 is the structured flowchart according to the portable terminal of the embodiment of the invention;
Fig. 4 is the preferred flow charts according to the SAR monitoring of the embodiment of the invention;
Fig. 5 is the structured flowchart that detects handling procedure according to the SAR of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 1 is the flow chart according to the SAR processing method of the embodiment of the invention, and as shown in Figure 1, this flow process comprises the steps:
Step S102, portable terminal obtain the human body of this mobile terminal user of use to the distance of portable terminal and the transmitting power of portable terminal;
Step S104, portable terminal obtain the value of absorptivity SAR according to distance and transmitting power;
Step S106, portable terminal surpasses under the situation of threshold value in the value of SAR, sends the order that reduces transmitting power and/or to user prompt.
Because in the prior art, mobile terminal design or producer do not notice that all portable terminal the situation that the SAR value exceeds standard can occur in some cases, and therefore, portable terminal of the prior art does not detect the function of SAR value.By above-mentioned steps, in portable terminal, increased the function that detects SAR, and can when SAR surpasses threshold value, handle accordingly, thereby played effect to protecting human body.
Preferably, when implementing, portable terminal can calculate the SAR value according to distance and transmitting power, in addition, also can consider the employed frequency range of this portable terminal when calculating.Certainly, for the value that makes SAR is more accurate, portable terminal can obtain this SAR value according to the distance between the radiation point of maximum intensity of the SAR maximum point in the human body to this portable terminal.Need to prove for the less portable terminal of volume ratio, the radiation point of maximum intensity to the portable terminal can think to be exactly distance to this portable terminal.Radiation point of maximum intensity on SAR maximum point and the portable terminal approves that really process that this value obtains and present embodiment are irrelevant, do not repeat them here to record in the laboratory.Two kinds of formula that calculate the SAR value below are described by way of example.Also can be suitable for for embodying other formula that SAP is directly proportional with power and distance is inversely proportional to.
Formula one, SAR=P/ (Xa+Xb)
2Formula two, SAR=K*P/ (Xa+Xb)
2Wherein, Xa is the distance of the portable terminal that measures of portable terminal to the edge of human body, and Xb is that SAR maximum point in the human body is to the distance at human body edge, P is the transmitting power of portable terminal, and K is the coefficient of determining according to the employed frequency range of portable terminal.Need to prove, Xb can also can record in the laboratory, Fig. 2 is the schematic diagram according to the computational methods of the Xb of the embodiment of the invention, as shown in Figure 2, in the laboratory, can record the distance b of ordering to the SAR maximum point C in the human body to the radiation point of maximum intensity D point of portable terminal, can obtain simultaneously by the range unit on the mobile phone D point to the human body edge apart from a, thereby Xb=b-a.Preferably, if do not consider the distance of Xb, promptly Xb is 0, and the Xa+Xb in the then above-mentioned formula is actual to be exactly Xa.
Preferably, when implementing, also can in portable terminal, not add computing function, and the relation of distance, transmitting power and SAR value that the indication basis obtains is in advance directly determined the SAR value under certain distance and transmitting power, this implementation realizes wanting simple with respect to above-mentioned enforcement calculation mode, but need compare many work in the laboratory, make the corresponding relation of distance, transmitting power and SAR value detailed as much as possible, like this can be more accurate when reality is used.
Preferably, after sending the order that reduces transmitting power, the reduction that terminal might need to guarantee speech quality thereby transmitting power seldom or not reduces, at this moment, portable terminal can send the order that reduces transmitting power in execution and surpass pre-determined number, and send the SAR value obtained once more after the order that reduces transmitting power all under the situation above threshold value at every turn, point out to the user.For example, can point out the user to change and use the portable terminal environment, also can point out the user to change the mode of using portable terminal.
Fig. 3 is the structured flowchart according to the portable terminal of the embodiment of the invention, and as shown in Figure 3, this structure comprises: parameter acquisition module 32, SAR acquisition module 34, processing module 36 are explained below.
Parameter acquisition module 32 is used to obtain the human body of this mobile terminal user of use to the distance of portable terminal and the transmitting power of portable terminal; SAR acquisition module 34 is connected to parameter acquisition module 32, is used for obtaining according to distance and transmitting power the value of absorptivity SAR; Processing module 36 is connected to SAR acquisition module 34, is used for surpassing under the situation of threshold value in the value of SAR, sends the order that reduces transmitting power and/or to user prompt.
Preferably, processing module 36 is used for sending the order that reduces transmitting power in execution and surpasses pre-determined number, and sends the SAR value obtained once more after the order that reduces transmitting power all under the situation above threshold value, to user prompt at every turn.
Preferably, SAR acquisition module 34 is used for the value of obtaining SAR according to the distance between the SAR maximum point of the human body radiation point of maximum intensity to the portable terminal and transmitting power.
Preferably, SAR acquisition module 34 is used for obtaining according to following formula the value of SAR:
SAR=P/ (Xa+Xb)
2, perhaps, SAR=K*P/ (Xa+Xb)
2Wherein, Xa is the distance of the portable terminal that measures of portable terminal to the edge of human body, and Xb is that SAR maximum point in the human body is to the distance at human body edge, P is the transmitting power of portable terminal, and K is the coefficient of determining according to the employed frequency range of portable terminal.
Pass through the foregoing description; in actual environment, monitor the focus of SAR in real time; when exceeding standard, reduce transmitting power earlier; if it is also not all right then give a warning behind the reduction power; the prompting user changes environment for use (as changing a place), occupation mode (as using hand-free function or earphone etc.), protects the user to the full extent.
In a following preferred embodiment, provide a kind of SAR value provides protection to human body method that in portable terminal, detects in real time.This method comprises the steps:
Step S202, record the SAR value of this portable terminal to human body (as head, shank etc.) in authoritative laboratory, some C when obtaining SAR maximum and maximum, the focus D (radiation point of maximum intensity) on the terminal, focus be from distance of SAR detecting head etc., the initial value of enabling as present embodiment;
Step S204 enables the range sensing assembly on the hotspot location of terminal, so that gather the distance of portable terminal to human body in real time, offer monitoring of software and handle in real time;
Step S206, utilize the SAR maximum, portable terminal adds that to the distance X a of human body human body surface records the SAR maximum point to the laboratory distance is the distance X b of focus from the SAR detecting head, information such as portable terminal emitted power in communication process, handle by SAR value monitoring of software, obtain actual maximum SAR value this moment, and judge, if overflow then carry out respective handling, as reducing after the transmitting power alarm prompt etc. earlier.
Wherein, the portable terminal of present embodiment is the function with real-time monitoring and human body distance, and portable terminal is to have gathered focus in accredited laboratory, and the portable terminal of raw data array is arranged.In the present embodiment, by software is compiled, be added in the software that can move real-time monitoring SAR value in the interface of mobile terminal.By software is debugged, make portable terminal monitor high-precision SAR value.
In the present embodiment, employing be in mobile terminal software, to add monitoring SAR value in real time, and the mode of reporting to the police when exceeding standard realizes method that human body SAR is protected.Present embodiment adds real-time monitoring of software in mobile software; in portable terminal, add monitoring terminal from the human body distance; add the initial data that in accredited laboratory, collects; real-time change by algorithm monitors SAR value; when exceeding standard, reduces SAR transmitting power earlier; alarm is proposed if the reduction transmitting power is not all right; human body is protected; the prompting user (for example changes environment for use; change place), occupation mode (for example; use hand-free function or earphone etc.), protect the user to the full extent.
Below in conjunction with accompanying drawing preferred embodiment is described.
Record the SAR value of this portable terminal to human body (as head, shank etc.) in authoritative laboratory, obtain focus d (radiation point of maximum intensity), focus on SAR worst-case value, the terminal from distance b of SAR detecting head c etc., the initial value of enabling as present embodiment, in portable terminal, add real-time monitoring of software and monitoring terminal range finding assembly d from the human body distance, add the initial data that in accredited laboratory, collects, real-time change by algorithm monitors SAR value, when exceeding standard, reduce transmitting power earlier, if not all right just alarm is so that the user changes occupation mode.
Portable terminal is by software operation, when beginning to converse, detect the user and whether use earphone, hand-free call etc. whether, if not then opening monitoring SAR software, this moment, acquiescence was opened distance measurement function simultaneously, collect in real time the portable terminal focus from human body apart from a, the transmitting power TRP of portable terminal this moment of intercepting in real time as the input of real-time monitoring SAR program, calls different K according to different frequency ranges
0Coefficient.
The monitoring of software deal with data of portable terminal, and the result carried out respective handling.When exceeding standard, reduces SAR transmitting power earlier; alarm is proposed if the reduction transmitting power is not all right; human body is protected, and the prompting user changes environment for use (as changing a place), occupation mode (as using hand-free function or earphone etc.), protects the user to the full extent.
Calculating to the SAR value describes below.
The measure formula of SAR is as follows: SAR=σ Ei
2/ ρ, Ei are the electric field strength effective value in the cell tissue, represent with V/m; σ is the conductivity of tissue, represents with S/m; ρ is a tissue density, represents with kg/m3; Under the occasion that certain portable terminal uses, σ, ρ are certain.
SAR＝K
0×P/(Xa+b-a)
2
In a certain fixed position, the transmitting power P during with communication of mobile terminal collects, and then measures distance X a by the range finding assembly, and then the c point distance of ordering to d is Xa+b-a.Obtain SAR value this moment in P that previous step is obtained and the Xa+b-a substitution formula 1, judge,, and then carry out previous action if greater than maximum then preferentially lower transmitting power with the permission maximum of SAR.Effectively do not reduce SAR value if reduce transmitting power, then report to the police, purpose is that the prompting user changes conversation, or makes mobile phone away from health or hand-free call or use earphone or finish this and converse etc.
Fig. 4 is according to the preferred flow charts of the SAR monitoring of the embodiment of the invention, describes below in conjunction with Fig. 4.
Time in conversation beginning is just moved the SAR trace routine, and advanced person's words mode that works is judged, if the user does not use earphone, bluetooth or hand-free call, then continues the operation trace routine, otherwise does not then move.Trace routine detects the transmitting power P of mobile phone this moment, and utilizes range finder module to detect the distance X a of focus D point to human body; In the algorithmic formula 1 with the data substitution that collects, obtain the value SARx of SAR this moment, judge then, if SARx thinks then that smaller or equal to the maximum SAR0 that surveys in the laboratory at this moment SAR is normal, program cycle detected in real time to the incipient stage again; If SARx is greater than SAR0, after detecting number of times and judging,, this in n0 the number of setting, then reduces transmitting power if judging also, and the transmitting power and the distance X a that gather this moment afterwards again carry out SAR detection judgement; Judge number of times if this judgement has exceeded the n0 of setting, then start alarm, the prompting user changes talking mode, or hand-free call or use earphone, or finishes this conversation.If enable above-mentioned measure, then do not move the SAR trace routine.
Fig. 5 is the structured flowchart that detects handling procedure according to the SAR of the embodiment of the invention, and this structure comprises: talking mode detection module, data acquisition module (being equivalent to parameter acquisition module 32), SAR calculate judge module (being equivalent to SAP acquisition module 34) and alarm module (being equivalent to processing module 36).
The talking mode detection module is that program running detects the user at first and with what mode converses, if do not use earphone, bluetooth or hand-free call, then trace routine is not moved; Data acquisition module is to gather transmitting power in the communication process and the focus distance to human body; It is according to data computation SAR value this moment that collects that SAR calculates judge module, then and the maximum SAR0 when authenticating carry out judgment processing, take into account the judgement number of times simultaneously, can not unrestrictedly circulate; Alarm module is under the situation that SAR exceeds standard, and prompting user SAR exceeds standard, the preferred talking mode of prompting user: hands-free, earphone or finish this conversation.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the processing method of an electromagnetic wave energy absorptance is characterized in that, comprising:
Portable terminal obtains the human body that uses this mobile terminal user and arrives the distance of described portable terminal and the transmitting power of described portable terminal;
Described portable terminal obtains the value of electromagnetic wave energy absorptance SAR according to described distance and described transmitting power;
Described portable terminal surpasses under the situation of threshold value in the value of described SAR, sends the order that reduces transmitting power and/or to described user prompt.
2. method according to claim 1 is characterized in that,
Described portable terminal surpasses under the situation of described threshold value in the value of described SAR, sends the order that reduces transmitting power;
Described portable terminal sends the order that reduces transmitting power in execution and surpasses pre-determined number, and sends the SAR value obtained once more after the order that reduces transmitting power all under the situation above described threshold value, to described user prompt at every turn.
3. method according to claim 1 is characterized in that, described portable terminal is determined coefficient according to its employed frequency range, and uses the value of this coefficient, described distance and described SAR.
4. method according to claim 1 is characterized in that, described portable terminal comprises according to the value of described distance and described SAR:
The value that described portable terminal obtains described SAR according to the distance between the radiation point of maximum intensity of the SAR maximum point in the described human body to the described portable terminal and described transmitting power.
5. method according to claim 4 is characterized in that, described portable terminal obtains the value of described SAR according to following formula:
Described SAR=P/ (Xa+Xb)
2, perhaps, described SAR=K*P/ (Xa+Xb)
2Wherein, Xa is the distance of the described portable terminal that measures of described portable terminal to the edge of described human body, described Xb is the distance that the SAR maximum point in the described human body arrives described human body edge, P is the transmitting power of described portable terminal, and K is the coefficient of determining according to the employed frequency range of described portable terminal.
6. according to each described method in the claim 1 to 5, it is characterized in that, described portable terminal to described user prompt comprise following one of at least:
Point out described user to change and use described portable terminal environment, the described user of prompting to change the mode of using described portable terminal.
7. a portable terminal is characterized in that, comprising:
Parameter acquisition module is used to obtain the human body that uses this mobile terminal user and arrives the distance of described portable terminal and the transmitting power of described portable terminal;
The SAR acquisition module is used for obtaining according to described distance and described transmitting power the value of SAR;
Processing module is used for surpassing under the situation of threshold value in the value of described SAR, sends the order that reduces transmitting power and/or to described user prompt.
8. portable terminal according to claim 7 is characterized in that,
Described processing module is used for sending the order that reduces transmitting power in execution and surpasses pre-determined number, and sends the SAR value obtained once more after the order that reduces transmitting power all under the situation above described threshold value, to described user prompt at every turn.
9. portable terminal according to claim 7 is characterized in that,
Described SAR acquisition module is used for the value of obtaining described SAR according to the distance between the SAR maximum point of the described human body radiation point of maximum intensity to the described portable terminal and described transmitting power.
10. portable terminal according to claim 9 is characterized in that, described SAR acquisition module is used for obtaining according to following formula the value of described SAR:
Described SAR=P/ (Xa+Xb)
2, perhaps, described SAR=K*P/ (Xa+Xb)
2Wherein, Xa is the distance of the described portable terminal that measures of described portable terminal to the edge of described human body, described Xb is the distance that the SAR maximum point in the described human body arrives described human body edge, P is the transmitting power of described portable terminal, and K is the coefficient of determining according to the employed frequency range of described portable terminal.
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| CN201010507077.XA CN101980564B (en) | 2010-10-14 | 2010-10-14 | Specific absorption rate processing method and mobile terminal |
| PCT/CN2011/079591 WO2012048610A1 (en) | 2010-10-14 | 2011-09-13 | Method for processing specific absorption rate of electromagnetic wave energy and a mobile terminal |
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| CN201010507077.XA CN101980564B (en) | 2010-10-14 | 2010-10-14 | Specific absorption rate processing method and mobile terminal |
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| WO2012048610A1 (en) | 2012-04-19 |
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