CN102394705B - Environment adjusting method and system - Google Patents
Environment adjusting method and system Download PDFInfo
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- CN102394705B CN102394705B CN201110208941.0A CN201110208941A CN102394705B CN 102394705 B CN102394705 B CN 102394705B CN 201110208941 A CN201110208941 A CN 201110208941A CN 102394705 B CN102394705 B CN 102394705B
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Abstract
The invention provides a moving body sensing method and system as well as an environment adjusting method and system. The sensing method comprises the following steps of: acquiring a radio frequency signal in a monitoring region, and outputting an RSSI (received signal strength indicator) value according to the acquired radio frequency signal; according to the RSSI value, obtaining a radio frequency parameter in the monitoring region in accordance with first default rules; and comparing whether the radio frequency parameter is less than a preset static radio frequency parameter, if the radio frequency parameter is less than the preset static radio frequency parameter, determining that the moving body is located in the monitoring region and prompting. In the method and system provided by the invention, the moving body is not required to carry a positioning device, thus being convenient for a user to use.
Description
Technical field
The present invention relates to Internet of Things field, relate in particular to a kind of cognitive method, system and environment adjustment method, system of moving body.
Background technology
Along with the development of technology, Internet of Things is by information sensing equipment such as radio-frequency (RF) identification, infrared inductor, global positioning system, laser scanners, by the agreement of agreement, any article are connected with the Internet, carry out information exchange and communicate by letter, to realize intellectuality identification, location, tracking, monitoring and the management to article, but in the prior art, need moving body to carry positioner, make the sensory perceptual system more complicated of moving body.
Summary of the invention
The present invention is the sensory perceptual system more complicated that solves moving body in prior art, inconvenient technical problem, and a kind of cognitive method, system and environment adjustment method, system of moving body is provided, simple and convenient.
The cognitive method that the invention provides a kind of moving body, said method comprising the steps of:
Obtain the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
According to RSSI value, according to the first preset rules, obtain the radio frequency parameter of monitored area;
Whether more described radio frequency parameter is less than default static radio frequency parameter, and if so, monitored area exists moving body prompting.
The present invention also provides a kind of environment adjustment method, said method comprising the steps of:
Obtain the radiofrequency signal of monitored area, and according to getting radiofrequency signal, obtain RSSI value;
According to RSSI value, according to the first preset rules, obtain the radio frequency parameter of monitored area;
Whether more described radio frequency parameter is less than default static radio frequency parameter, and if so, monitored area exists moving body;
According to described comparative result, regulate ambient temperature and the ambient brightness of described monitored area.
The present invention also provides a kind of sensory perceptual system of moving body, and described system comprises acquisition module, computing module, comparison module and reminding module;
Acquisition module, for obtaining the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
Computing module, for according to the RSSI value of acquisition module output, according to the first preset rules, obtains the radio frequency parameter of monitored area;
Whether comparison module, be less than default static radio frequency parameter for the radio frequency parameter that relatively computing module obtains, and export comparison signal;
Reminding module, for according to the comparison signal of comparison module output, points out monitored area whether to have moving body.
The present invention also provides a kind of environment adjustment system, and described system comprises acquisition module, the first computing module, comparison module and adjustment module;
Acquisition module, for obtaining the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
The first computing module, for according to the RSSI value of acquisition module output, according to the first preset rules, obtains the radio frequency parameter of monitored area;
Whether comparison module, be less than default static radio frequency parameter for the radio frequency parameter that relatively the first computing module obtains, and export comparison signal;
Adjustment module, for according to the comparison signal of comparison module output, regulates ambient temperature and the ambient brightness of monitored area.
Can find out from above-mentioned scheme, by obtaining the radiofrequency signal of monitored area, obtain RSSI value, obtain again the radio frequency parameter of monitored area by RSSI value, then described radio frequency parameter and default static radio frequency parameter are compared, just can obtain monitored area and whether have moving body, the rf attenuation effect of namely utilizing radiofrequency signal to produce in the time that moving body is movable, by contrasting without the radio frequency parameter in moving body situation with static state, draw the activity that whether has moving body in monitored area, do not need moving body to carry positioner, thereby user-friendly.
Brief description of the drawings
Fig. 1 is the flow chart of a kind of embodiment of cognitive method of moving body of the present invention;
Fig. 2 is the flow chart of a kind of embodiment of radio frequency parameter computational methods of the present invention;
Fig. 3 is the flow chart of a kind of embodiment of environment adjustment method of the present invention;
Fig. 4 is the flow chart that the present invention regulates a kind of embodiment of monitored area environment;
Fig. 5 is the flow chart of a kind of embodiment of current liveness computational methods of moving body of the present invention;
Fig. 6 is the flow chart of the another kind of embodiment of current liveness computational methods of moving body of the present invention;
Fig. 7 is the flow chart that the present invention works as monitored area and exist a kind of embodiment of control method of moving body;
Fig. 8 is the flow chart that the present invention works as monitored area and do not exist a kind of embodiment of control method of moving body;
Fig. 9 is the structural representation of a kind of embodiment of sensory perceptual system of moving body of the present invention;
Figure 10 is the structural representation of a kind of embodiment of environment adjustment system of the present invention.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention provides the cognitive method of the moving body of a kind of embodiment, as shown in Figure 1, said method comprising the steps of:
Step S01, obtains the radiofrequency signal of monitored area, and according to getting radiofrequency signal, obtains RSSI (Received Signal Strength Indication, received signal strength indicator) value, enters step S02;
Step S02, according to RSSI value, according to the first preset rules, obtains the radio frequency parameter A of monitored area, enters step S03;
Step S03, whether more described radio frequency parameter A is less than default static radio frequency parameter, if so, enters step S04, if not, enters step S05;
Step S04, there is moving body prompting in monitored area;
Step S05, there is not moving body in monitored area.
In the present embodiment, described moving body is behaved, and can judge in monitored area, whether there is human activity.
In step S03, in the time there is not human activity in monitored area, the radio frequency parameter that monitored area is acquired, adds unit amplitude, just obtains default static radio frequency parameter.Such as the scope of monitoring comprises the first monitored area, the second monitored area, the 3rd monitored area and the 4th monitored area, in the time there is not human activity in above-mentioned monitored area, 50,60,65,80db in long-time, obtain RSSI value, obtain radio frequency parameter according to the average of each RSSI value as follows successively:.60,70,75,90db in concrete enforcement, the span of unit amplitude is 10-15dbm, such as unit amplitude is 10dbm, show that so the default static radio frequency parameter of monitoring range is as follows successively:.
Can find out from such scheme, by obtaining the radiofrequency signal of monitored area, obtain RSSI value, obtain again the radio frequency parameter A of monitored area by RSSI value, then described radio frequency parameter A is compared with default static radio frequency parameter, just can obtain monitored area and whether have moving body, the rf attenuation effect of namely utilizing radiofrequency signal to produce in the time that moving body is movable, by contrasting without the radio frequency parameter in moving body situation with static state, draw the activity that whether has moving body in monitored area, do not need moving body to carry positioner, thereby user-friendly.
In concrete enforcement, described step S02, can be specially, and radio frequency parameter A equals RSSI value.
In concrete enforcement, in order further to improve the accuracy that monitored area is detected, prevent from disturbing, as shown in Figure 2, described step S02 can also comprise the following steps:
Step S021, judges that the current time whether in time range at night, if so, enters step S022, if not, enters step S023;
Step S022, calculates radio frequency parameter A, the default weighted value I of A=RSSI value * first
1;
Step S023, calculates radio frequency parameter A, the default weighted value I of A=RSSI value * second
2.
For step S021, the time range in evening can be 22:00-7:00.
In concrete enforcement, the first default weighted value I
1span can be: 0.7-0.8, the first default weighted value I
1span can be: 0.25-0.3, if the current time is at night, the RSSI value of monitored area is 60, the first default weighted value I
1equal 0.7, so radio frequency parameter A=60*0.7=42.
In concrete enforcement, in order to realize according to the active situation of moving body, the environment of monitored area is regulated, the present invention also provides the environment adjustment method of a kind of embodiment, as shown in Figure 3, said method comprising the steps of:
Step S01, obtains the radiofrequency signal of monitored area, and according to getting radiofrequency signal, obtains RSSI value, enters step S02;
Step S02, according to RSSI value, according to the first preset rules, obtains the radio frequency parameter A of monitored area, enters step S03;
Step S03, whether more described radio frequency parameter A is less than default static radio frequency parameter, if so, enters step S04, if not, enters step S05;
Step S04, there is moving body prompting in monitored area, enters step S06;
Step S05, there is not moving body in monitored area, enters step S06;
Step S06, ambient temperature and the ambient brightness of adjusting monitored area.
Can find out from such scheme, by obtaining the radiofrequency signal of monitored area, obtain RSSI value, obtain again the radio frequency parameter A of monitored area by RSSI value, then described radio frequency parameter A is compared with default static radio frequency parameter, just can obtain monitored area and whether have moving body, the rf attenuation effect of namely utilizing radiofrequency signal to produce in the time that moving body is movable, by contrasting without the radio frequency parameter in moving body situation with static state, draw the activity that whether has moving body in monitored area, do not need moving body to carry positioner, thereby user-friendly.And whether there is moving body according to monitored area, regulate ambient temperature and the ambient brightness of monitored area, make when monitored area is not in the time there is no human activity or when human activity is less, the adjusting that ambient temperature to monitored area and ambient brightness adapt, thus reduce the wastage the object that reaches energy-conservation.
In concrete enforcement, as shown in Figure 4, for step S06, specifically comprise:
Step S061, according to described radio frequency parameter, according to the second preset rules, obtains the current liveness of moving body;
Step S062, according to described current liveness and the comparative result receiving, regulates ambient temperature and the ambient brightness of described monitored area.
For step S061, can be specially: the current liveness B of moving body equals described radio frequency parameter A.
In concrete enforcement, as shown in Figure 5, described step S061 can also comprise the following steps:
Step S0611, judges whether described radio frequency parameter A equals default static radio frequency parameter, if so, enters step S0612, if not, enters step S0613;
Step S0612, calculates the current liveness B of moving body, and the current liveness B of moving body equals described radio frequency parameter A;
Step S0613, calculates weight coefficient n, n=(default static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, and wherein n is positive integer, enters step S0614;
Enter step S0614, calculate the current liveness B of moving body, the current liveness B of moving body equals described radio frequency parameter A* (n+1).
In concrete enforcement, in order to realize more accurately the adjusting to environment, as shown in Figure 6, described step S061 can also comprise the following steps:
Step S0601, arranges variable i, and variable i is from adding 1, and wherein the initial value of i is that 0, i is positive integer;
Step S0602, judges whether described radio frequency parameter equals default static radio frequency parameter, if so, enters step S0603, if not, enters step S0604;
Step S0603, calculates the current liveness B of moving body
i, the current liveness B of moving body
iequal the liveness B of a front moving body
i-1average with described radio frequency parameter A sum;
Step S0604, calculates weight coefficient n, n=(default static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, and wherein n is positive integer, enters step S0605;
Enter step S0605, calculate the current liveness B of moving body
i, the current liveness B of moving body
iequal the liveness B of the front moving body of described radio frequency parameter * (n+1)
i-1the average of sum.
For step S0611 and step S0602, because the human activity in monitored area is more frequent, the numerical value of radio frequency parameter is less, be that human body is larger to the interference of environment, illustrate that in monitored area, people's amount of flow is larger, therefore need weight coefficient larger, and in the ordinary course of things, in the time there is human activity in monitored area, the corresponding radio frequency parameter in monitored area all can be less than default static radio frequency parameter, when being less than parameter preset unit value to a certain extent time, just increase weight coefficient larger, thereby the frequent degree of human activity in can clearer reflection monitored area.
In concrete enforcement, the span of parameter preset unit value is: 6-8dbm, be 65db such as working as the corresponding radio frequency parameter in monitored area, default static radio frequency parameter is 87db, parameter preset unit value is 6dbm, n=(87-65)/6=2 so, if according to the algorithm of step S064, current liveness=the 65*2=130 of moving body, if according to the algorithm of step S0604, if when the liveness of last moving body is 70db, current liveness=(the 70+65*2)/2=100db of moving body, can be just now that 100db regulates ambient brightness and ambient temperature according to the current liveness of moving body.
Further, for the adjusting that the ambient temperature to monitored area and ambient brightness adapt exactly, make the adjusting hommization more of monitored area, as shown in Figure 7, in the time there is human activity in monitored area, described step S062, specifically comprises the following steps:
Step S0621, judges whether is summer in current season, if so, enters step S0622, if not, enters step S0623;
Step S0622, according to described current liveness, reduces the ambient temperature of monitored area and increases ambient brightness;
Step S0623, judges whether is winter in current season, if so, enters step S0624, if not, and step S0625;
Step S0624, according to described current liveness, increases ambient temperature and the ambient brightness of monitored area;
Step S0625, according to described current liveness, keeps the ambient temperature of monitored area and reduces ambient brightness.
As shown in Figure 8, in the time there is not human activity in monitored area, described step S062, specifically comprises the following steps:
Step S0626, judges whether is summer in current season, if so, enters step S0627, if not, enters step S0628;
Step S0627, according to described current liveness, increases the ambient temperature of monitored area and reduces ambient brightness;
Step S0628, judges whether is winter in current season, if so, enters step S0629, enters if not step S0630;
Step S0629, according to described current liveness, reduces ambient temperature and the ambient brightness of monitored area;
Step S0630, according to described current liveness, keeps the ambient temperature of monitored area and reduces ambient brightness.
In above-mentioned steps, according to described current liveness, the size of adjusting ambient temperature and ambient brightness,, in the time that current liveness is different, the amplitude that ambient temperature increases or reduces with ambient brightness is different, repeats no longer one by one herein.
Can go out from such scheme, according to whether there is human activity in monitored area, calculate the situation in described current liveness and current season, the ambient temperature of distinguishing adjusting monitored area and reduction ambient brightness, can reduce the loss in monitored area, be increased in the comfort level of human body in monitored area, thus hommization more.
In concrete enforcement, in order to realize the judgement to whether there is moving body in monitored area, the present invention also provides the sensory perceptual system of the moving body of a kind of embodiment, and as shown in Figure 9, described system comprises acquisition module 1, computing module 2, comparison module 3 and reminding module 4;
Acquisition module 1, for obtaining the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
Computing module 2, for the RSSI value of exporting according to acquisition module 1, according to the first preset rules, obtains the radio frequency parameter of monitored area;
Whether comparison module 3, be less than default static radio frequency parameter for the radio frequency parameter that relatively computing module 2 obtains, and export comparison signal
Reminding module 4, for the comparison signal of exporting according to comparison module 3, whether prompting monitored area there is moving body.
Can find out from such scheme, by obtaining the radiofrequency signal of monitored area, obtain RSSI value, obtain again the radio frequency parameter A of monitored area by RSSI value, then described radio frequency parameter A is compared with default static radio frequency parameter, just can obtain monitored area and whether have moving body, the rf attenuation effect of namely utilizing radiofrequency signal to produce in the time that moving body is movable, by contrasting without the radio frequency parameter in moving body situation with static state, draw the activity that whether has moving body in monitored area, do not need moving body to carry positioner, thereby user-friendly.
In concrete enforcement, in order further to improve the accuracy that monitored area is detected, prevent from disturbing, described computing module 2 comprises judging unit and computing unit;
Judging unit, in the time receiving the RSSI value of acquisition module 1, judges that the current time is whether in time range at night, and exports the first judgement signal and second and judge signal;
Computing unit, for in the time receiving first of judging unit and judge signal, calculate radio frequency parameter and equal the default weighted value of RSSI value * first, in the time receiving second of judging unit and judge signal, calculate radio frequency parameter and equal RSSI value * second and preset weighted value.
In concrete enforcement, in order to realize according to the active situation of moving body, the environment of monitored area is regulated, the present invention also provides the environment adjustment system of a kind of embodiment, as shown in figure 10, described system comprises acquisition module 11, the first computing module 12, comparison module 14 and adjustment module 15;
Acquisition module 11, for obtaining the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
The first computing module 12, for the RSSI value of exporting according to acquisition module 11, according to the first preset rules, obtains the radio frequency parameter of monitored area;
Whether comparison module 14, be less than default static radio frequency parameter for the radio frequency parameter that relatively the first computing module 12 obtains, and export comparison signal;
Adjustment module 15, for the comparison signal of exporting according to comparison module 14, regulates ambient temperature and the ambient brightness of monitored area.
Can find out from such scheme, by obtaining the radiofrequency signal of monitored area, obtain RSSI value, obtain again the radio frequency parameter A of monitored area by RSSI value, then described radio frequency parameter A is compared with default static radio frequency parameter, just can obtain monitored area and whether have moving body, the rf attenuation effect of namely utilizing radiofrequency signal to produce in the time that moving body is movable, by contrasting without the radio frequency parameter in moving body situation with static state, draw the activity that whether has moving body in monitored area, do not need moving body to carry positioner, thereby user-friendly.And whether there is moving body according to monitored area, regulate ambient temperature and the ambient brightness of monitored area, make when monitored area is not in the time there is no human activity or when human activity is less, the adjusting that ambient temperature to monitored area and ambient brightness adapt, thus reduce the wastage the object that reaches energy-conservation.
In concrete enforcement, as shown in figure 10, described system also comprises the second computing module 13;
The second computing module 13, after the comparison signal of exporting when comparison module 14, the radio frequency parameter obtaining according to the first computing module 12, according to the second preset rules, obtains the current liveness of moving body;
Adjustment module 15, the also current liveness for obtaining according to the second computing module 13, ambient temperature and the ambient brightness of adjusting monitored area.
In concrete enforcement, in order to realize exactly the adjusting to environment, described the second computing module 13 can comprise and judges submodule and calculating sub module;
Judge submodule, for judging whether radio frequency parameter that the first computing module 12 obtains equals default static radio frequency parameter, and export the first judgement signal and second and judge signal;
Calculating sub module, for when receiving while judging that first of submodule judges signal, the current liveness that calculates moving body equals described radio frequency parameter, in the time receiving second of judging unit and judge signal, calculate weight coefficient n, n=(default static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer, and the current liveness of calculating moving body equals described radio frequency parameter * (n+1).
In concrete enforcement, in order to realize more accurately the adjusting to environment, described the second computing module 13 comprises and judges submodule and calculating sub module;
Judge submodule, for judging whether radio frequency parameter that the first computing module 12 obtains equals default static radio frequency parameter, and export the first judgement signal and second and judge signal;
Calculating sub module, for when receiving while judging that first of submodule judges signal, the current liveness that calculates moving body equals the liveness of a front moving body and the average of described radio frequency parameter sum, in the time receiving second of judging unit and judge signal, calculate weight coefficient n, n=(default static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer, and the current liveness that calculates moving body equals the average of the liveness sum of the front moving body of described radio frequency parameter * (n+1).
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. an environment adjustment method, is characterized in that: said method comprising the steps of:
Obtain the radiofrequency signal of monitored area, and according to getting radiofrequency signal, obtain RSSI value;
According to RSSI value, according to the first preset rules, obtain the radio frequency parameter of monitored area;
Whether more described radio frequency parameter is less than default static radio frequency parameter, and if so, monitored area exists moving body prompting;
According to described comparative result, regulate ambient temperature and the ambient brightness of described monitored area;
Wherein, regulate the ambient temperature of monitored area and the step of ambient brightness to comprise:
According to described radio frequency parameter, according to the second preset rules, obtain the current liveness of moving body;
According to described current liveness and the comparative result receiving, regulate ambient temperature and the ambient brightness of described monitored area;
Wherein, according to described radio frequency parameter, according to the second preset rules, obtain the step of the current liveness of moving body, be specially:
Judge whether described radio frequency parameter equals default static radio frequency parameter, if, calculate the current liveness of moving body, the current liveness of moving body equals described radio frequency parameter, if not, calculate weight coefficient n, n=(presets static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer;
The current liveness that calculates moving body, the current liveness of moving body equals described radio frequency parameter * (n+1); Or
Judge whether described radio frequency parameter equals default static radio frequency parameter, if so, calculates the current liveness of moving body, and the current liveness of moving body equals the liveness of a front moving body and the average of described radio frequency parameter sum; If not, calculate weight coefficient n, n=(presets static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer;
The current liveness that calculates moving body, the current liveness of moving body equals the average of the liveness sum of the front moving body of described radio frequency parameter * (n+1);
Wherein, according to RSSI value, according to the first preset rules, obtain the step of the radio frequency parameter of monitored area, be specially: radio frequency parameter equals RSSI value; Or
Judge that the current time is whether in time range at night, if so, radio frequency parameter equals the default weighted value of RSSI value * first, and if not, radio frequency parameter equals the default weighted value of RSSI* second.
2. an environment adjustment system, is characterized in that, comprising: acquisition module, the first computing module, comparison module and adjustment module;
Acquisition module, for obtaining the radiofrequency signal of monitored area, and according to getting radiofrequency signal, output RSSI value;
The first computing module, for according to the RSSI value of acquisition module output, according to the first preset rules, obtains the radio frequency parameter of monitored area;
Whether comparison module, be less than default static radio frequency parameter for the radio frequency parameter that relatively the first computing module obtains, and export comparison signal;
Adjustment module, for according to the comparison signal of comparison module output, regulates ambient temperature and the ambient brightness of monitored area,
Wherein, also comprise the second computing module;
The second computing module, for after the comparison signal of comparison module output, the radio frequency parameter obtaining according to the first computing module, according to the second preset rules, obtains the current liveness of moving body; Adjustment module is the current liveness for obtaining according to the second computing module also, regulates ambient temperature and the ambient brightness of monitored area;
Wherein, the second computing module can comprise and judges submodule and calculating sub module;
Judge submodule, for judging whether radio frequency parameter that the first computing module obtains equals default static radio frequency parameter, and export the first judgement signal and second and judge signal; Wherein, in the time judging that radio frequency parameter that the first computing module obtains equals default static radio frequency parameter, output first judges that signal is as judged result, or, in the time judging that radio frequency parameter that the first computing module obtains is not equal to default static radio frequency parameter, output second judges that signal is as judged result;
Calculating sub module, for when receiving while judging that first of submodule judges signal, the current liveness that calculates moving body equals described radio frequency parameter, in the time receiving second of judging unit and judge signal, calculate weight coefficient n, n=(presets static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer, and the current liveness of calculating moving body equals described radio frequency parameter * (n+1); Or
The second computing module comprises and judges submodule and calculating sub module;
Judge submodule, for judging whether radio frequency parameter that the first computing module obtains equals default static radio frequency parameter, and export the first judgement signal and second and judge signal;
Calculating sub module, for when receiving while judging that first of submodule judges signal, the current liveness that calculates moving body equals the liveness of a front moving body and the average of described radio frequency parameter sum, in the time receiving second of judging unit and judge signal, calculate weight coefficient n, n=(presets static radio frequency parameter-described radio frequency parameter)/parameter preset unit value, wherein n is positive integer, and the current liveness that calculates moving body equals the average of the liveness sum of the front moving body of described radio frequency parameter * (n+1).
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| WO2005078644A1 (en) * | 2004-02-13 | 2005-08-25 | Sdsystem Co. Ltd | Radio frequency identity tag for reducing power consumption |
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| CN101996301A (en) * | 2009-08-24 | 2011-03-30 | 国民技术股份有限公司 | Communication distance control method and radio frequency card reading device |
| CN102004482A (en) * | 2010-11-23 | 2011-04-06 | 上海领科实业发展有限公司 | Internet of things technology-based automatic energy-saving control system and method for building |
| CN102081728A (en) * | 2009-11-30 | 2011-06-01 | 西门子公司 | Label activity detecting method and device in radio frequency identification (RFID) system as well as reader |
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| WO2005078644A1 (en) * | 2004-02-13 | 2005-08-25 | Sdsystem Co. Ltd | Radio frequency identity tag for reducing power consumption |
| CN101203866A (en) * | 2004-11-02 | 2008-06-18 | 英特尔公司 | Detecting activity of RFID objects via multiple tags/readers |
| CN101996301A (en) * | 2009-08-24 | 2011-03-30 | 国民技术股份有限公司 | Communication distance control method and radio frequency card reading device |
| CN102081728A (en) * | 2009-11-30 | 2011-06-01 | 西门子公司 | Label activity detecting method and device in radio frequency identification (RFID) system as well as reader |
| CN102004482A (en) * | 2010-11-23 | 2011-04-06 | 上海领科实业发展有限公司 | Internet of things technology-based automatic energy-saving control system and method for building |
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