CN103488961A - Error wake-up signal shielding method and active electronic tag - Google Patents
Error wake-up signal shielding method and active electronic tag Download PDFInfo
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- CN103488961A CN103488961A CN201210196491.2A CN201210196491A CN103488961A CN 103488961 A CN103488961 A CN 103488961A CN 201210196491 A CN201210196491 A CN 201210196491A CN 103488961 A CN103488961 A CN 103488961A
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Abstract
The invention discloses an error wake-up signal shielding method which includes the steps of after a wake-up signal is received, if a data interaction signal is not received within a preset data interaction time limit, calculating the transmission frequency of the wake-up signal, if the transmission frequency of the wake-up signal is higher than a preset shielding threshold, determining the wake-up signal received at present to be an error wake-up signal, and shielding the error wake-up signal. The invention further discloses an active electronic tag at the same time. According to the error wake-up signal shielding method and the active electronic tag, the error wake-up signal can be effectively recognized, the number of times by which the active electronic tag is switched into a working condition from a dormant condition is reduced, then electric losses of the active electronic tag are reduced, and the service life of the active electronic tag is prolonged.
Description
Technical field
The present invention relates to radio-frequency (RF) identification (RFID, the Radio Frequency IDentification) technology in wireless communication field, relate in particular to a kind of method and active electronic label that shields the false wake-up signal.
Background technology
RFID automatically identifies destination object and obtains the technology of data by radiofrequency signal.Rfid system can be comprised of electronic tag and reader; Wherein, described electronic tag comprises: two types of active electronic label and passive electronic labels.Above-mentioned active electronic label is at ordinary times in dormant state, and when active electronic label is received the wake-up signal from reader, active electronic label will transfer duty to from dormant state; When completing data interaction between active electronic label and reader or interaction error occurs, can reenter dormant state.
But, in actual application scenarios, due to the electromagnetic environment more complicated, may exist and the similar interference source of reader, this class interference source may send the false wake-up signal frequently.Such as: take path identifying system as example, its active electronic label is operated in high frequency and two frequency ranges of ultrahigh frequency, and wherein, high-frequency signal is as wake-up signal, and ultra-high frequency signal is as the data interaction signal; When active electronic label is received high-frequency signal, this high-frequency signal is entered to duty as wake-up signal, and confiscate at the appointed time the data interaction signal, this wake-up signal is the false wake-up signal, so, exist around the active electronic label duration during longer high frequency interference source, active electronic label can be in running order within the longer time period, thereby the kwh loss of aggravation active electronic label, the mission life of minimizing active electronic label.
Visible, because the false wake-up signal can't effectively be identified and shield to active electronic label of the prior art, cause active electronic label may be subject to the impact of external interference source, transfer duty to by dormant state frequently, and then the kwh loss of aggravation active electronic label, the mission life of minimizing active electronic label.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method and active electronic label that shields the false wake-up signal, can effectively identify and shield the false wake-up signal, reduce active electronic label and transferred to the number of times of duty by dormant state, and then the kwh loss of minimizing active electronic label, the mission life that extends active electronic label.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method that shields the false wake-up signal, the method comprises:
After receiving wake-up signal, if, within the preset data interaction time limit, do not receive the data interaction signal, calculate the transmission frequency of wake-up signal;
If the transmission frequency of described wake-up signal higher than preset shielding thresholding, determines that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal.
In such scheme, described receive wake-up signal before, the method also comprises: whether in real time detection receives wake-up signal.
In such scheme, the transmission frequency of described calculating wake-up signal, comprise: in preset calculating duration, if receive wake-up signal, current wake-up times is added to one, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
In such scheme, the described false wake-up signal of described shielding comprises: in the shielding duration of appointment, close the function of the response wake-up signal of self.
In such scheme, after the described false wake-up signal of described shielding, the method also comprises: after the shielding duration of appointment finishes, open the function of response wake-up signal, reenter dormant state, and wake-up times is set is zero, continues real-time detection and whether receive wake-up signal.
The present invention also provides a kind of active electronic label, and this active electronic label comprises: central processing unit (CPU, Central Processing Unit) module, wake-up signal receiver module and data interaction signal receiving module; Wherein,
The CPU module, after receiving the wake-up signal that the wake-up signal receiver module sends, if within the preset data interaction time limit, do not receive the data interaction signal that the data interaction signal receiving module is sent, calculate the transmission frequency of wake-up signal, if the transmission frequency of described wake-up signal higher than preset shielding thresholding, determines that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal;
The data interaction signal receiving module, for sending to the CPU module by the data interaction signal;
The wake-up signal receiver module, for sending to wake-up signal the CPU module.
In such scheme, whether described CPU module, receive specifically for detection in real time the wake-up signal that the wake-up signal receiver module is sent.
In such scheme, described CPU module, in the calculating duration preset, if receive the wake-up signal that the wake-up signal receiver module is sent, current wake-up times is added to one, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
In such scheme, described CPU module, in the shielding duration in appointment, the function of closing the response wake-up signal of self shields described false wake-up signal.
In such scheme, described CPU module, after finishing specifically for the shielding duration when appointment, open the function of response wake-up signal, reenter dormant state, and wake-up times is set is zero, continues the wake-up signal whether real-time detection receives that the wake-up signal receiver module is sent.
Method and the active electronic label of shielding false wake-up signal provided by the present invention, while can within the preset data interaction time limit, not receive the data interaction signal, calculate the transmission frequency of wake-up signal, if the occurrence frequency of wake-up signal is higher than preset shielding thresholding, determine that the current wake-up signal of receiving is the false wake-up signal, shield described false wake-up signal, so, can effectively identify and shield the false wake-up signal; And then can reduce active electronic label and be transferred to the number of times of duty by dormant state by the described false wake-up signal of shielding, reduce the kwh loss of active electronic label, extend the mission life of active electronic label.
The accompanying drawing explanation
The method flow schematic diagram that Fig. 1 is shielding false wake-up signal of the present invention;
The composition structural representation that Fig. 2 is active electronic label of the present invention.
Embodiment
Basic thought of the present invention is: after receiving wake-up signal, if do not receive the data interaction signal within the preset data interaction time limit, calculate the transmission frequency of wake-up signal; If the transmission frequency of described wake-up signal higher than preset shielding thresholding, determines that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal.
Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
A kind of method that shields the false wake-up signal provided by the invention as shown in Figure 1, comprises the following steps:
Step 101: active electronic label detects in real time self and whether receives wake-up signal, if receive, performs step 102; Otherwise, repeated execution of steps 101.
Here, described wake-up signal is the signal of stipulating in prior art, can be high-frequency signal, does not do and repeats here.
Before execution step 101, described active electronic label is in dormant state, and preset wake-up times (N) is zero.
Step 102: active electronic label judges within the preset data interaction time limit whether receive the data interaction signal, if receive, according to the data interaction signal, is operated the end process flow process; Otherwise, perform step 103.
Here, described data interaction signal is the signal of stipulating in prior art, by reader, sends to active electronic label, is specifically as follows ultra-high frequency signal, does not do and repeats here; Describedly according to the data interaction signal, be operating as according to prior art, according to the data interaction signal, carried out follow-up all operations, do not do and repeat here; Be limited to the duration preset according to actual conditions during described data interaction.
In addition, before execution step 103, described active electronic label also can add one by wake-up times (N).
This step can be carried out timing to the preset data interaction time limit by the timer of opening in active electronic label, such as: active electronic label is opened self timer (T
a), and T is set
atiming (t1) be the preset data interaction time limit; If in the time, receive the data interaction signal at t1, according to the data interaction signal, operated the end process flow process; If in the time, do not receive the data interaction signal at t1, wake-up times (N) is added to one, perform step 103;
Step 103: active electronic label calculates the transmission frequency of wake-up signal.
Be specially: in preset calculating duration, if receive wake-up signal, current wake-up times is added to 1, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
Here, described preset calculating duration is the duration preset according to actual conditions, such as being set to 100ms.
This step can be carried out timing to preset calculating duration by the timer of opening in active electronic label, such as: active electronic label is opened self timer (T
b) and T is set
btiming (t2) be preset calculating duration, in the time, if receive the wake-up signal that the wake-up signal receiver module is sent, N is added to 1 at t2, until timing t2 finishes, using N divided by the t2 income value transmission frequency as wake-up signal.
Step 104: active electronic label judges that whether the transmission frequency of described wake-up signal is higher than preset shielding thresholding, if higher than, determine that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal, the end process flow process; Otherwise, according to prior art, carry out subsequent operation.
Here, the described false wake-up signal of described shielding is: in the shielding duration of appointment, active electronic label is closed the function of the response wake-up signal of self; Wherein, the shielding duration of described appointment can equal the transmission frequency of any one constant divided by wake-up signal, such as: when any one constant is 10, when the transmission frequency of wake-up signal is 50Hz, the duration of appointment is 200ms; The function of described response wake-up signal is the function that in prior art, the regulation active electronic label possesses, and does not do and repeats here.
After the described false wake-up signal of described shielding, also comprise: after the shielding duration of appointment finishes, active electronic label is opened the function of response wake-up signal, reenters dormant state, and wake-up times (N) is set is zero, returns to step 101.
Describedly carry out subsequent operation according to prior art and can comprise: after active electronic label reenters dormant state according to the regulation of prior art, wake-up times is set to 0, returns to step 101.
The present invention proposes a kind of active electronic label, as shown in Figure 2, comprising: CPU module 21, wake-up signal receiver module 22 and data interaction signal receiving module 23; Wherein,
Data interaction signal receiving module 23, for sending to CPU module 21 by the data interaction signal;
Wake-up signal receiver module 22, for sending to wake-up signal CPU module 21.
Whether described wake-up signal receiver module 22, receive specifically for detection in real time the wake-up signal that reader is sent, and the wake-up signal of receiving is sent to CPU module 21; Accordingly, described CPU module 21, also for detection in real time, whether receive the wake-up signal that wake-up signal receiver module 22 is sent, if receive, judge within the data interaction time limit, whether receive the data interaction signal, otherwise, continue to judge whether the wake-up signal of receiving that wake-up signal receiver module 22 is sent.
Described CPU module 21, also for when the place active electronic label during in dormant state, it is zero that wake-up times N is set; Described dormant state is the state that the active electronic label stipulated in prior art possesses, and its implementation is prior art, does not do and repeats here.
Described data interaction signal receiving module 23, also, for after receiving the unlatching notice that CPU module 21 sends, start to detect the data interaction signal that reader is sent, and will receive that the data interaction signal that reader is sent sends to CPU module 21; Accordingly, described CPU module 21, also, for after receiving wake-up signal, notification data interactive signal receiver module 23 is opened, and judgement is within the data interaction time limit, whether receive the data interaction signal that data interaction signal receiving module 23 is sent, if receive, according to the data interaction signal, operated end operation, otherwise, the transmission frequency of calculating wake-up signal.
Described CPU module 21 can be carried out timing to the preset data interaction time limit by the timer of opening in active electronic label, after receiving wake-up signal, opens timer internal (T
a), and T is set
atiming (t1) be the data interaction time limit, if in the time, receive the data interaction signal that data interaction signal receiving module 23 is sent at t1, according to the data interaction signal, operated end operation; If in the time, do not receive the data interaction signal that data interaction signal receiving module 23 is sent at t1, N is added to one, start to calculate the transmission frequency of wake-up signal; Wherein, be limited to the duration preset according to actual conditions during described data interaction.
Described CPU module 21, in the calculating duration preset, if receive wake-up signal, current wake-up times is added to 1, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
Described CPU module 21 can be carried out timing to preset calculating duration by the timer of opening in active electronic label, such as: open timer internal (T
b) and T is set
btiming (t2), in the time, if receive the wake-up signal that wake-up signal receiver module 22 is sent, N is added to 1 at t2, until timing t2 finishes, using N divided by the t2 income value transmission frequency as wake-up signal.
Described CPU module 21, specifically for the transmission frequency that judges described wake-up signal whether higher than preset shielding thresholding, if higher than, determine that the current wake-up signal of receiving is the false wake-up signal, shield described false wake-up signal, otherwise, do not do operation.
Described CPU module 21, in the shielding duration in appointment, close the function of the response wake-up signal of self; Wherein, the shielding duration of described appointment can equal the transmission frequency of any one constant divided by wake-up signal; The function of described response wake-up signal is the function that in prior art, the regulation active electronic label possesses, and does not do and repeats here.
Described CPU module 21, after also finishing for the shielding duration when appointment, the function of opening the response wake-up signal, reenter dormant state, and N is set is zero, continues to judge whether the wake-up signal of receiving that wake-up signal receiver module 22 is sent.
Above-mentioned active electronic label also possesses all functions of stipulating in prior art, does not do and repeats here.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a method that shields the false wake-up signal, is characterized in that, the method comprises:
After receiving wake-up signal, if, within the preset data interaction time limit, do not receive the data interaction signal, calculate the transmission frequency of wake-up signal;
If the transmission frequency of described wake-up signal higher than preset shielding thresholding, determines that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal.
2. method according to claim 1, is characterized in that, described receive wake-up signal before, the method also comprises: whether in real time detection receives wake-up signal.
3. method according to claim 1, is characterized in that, the transmission frequency of described calculating wake-up signal comprises:
In preset calculating duration, if receive wake-up signal, current wake-up times is added to one, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
4. method according to claim 1, is characterized in that, the described false wake-up signal of described shielding comprises: in the shielding duration of appointment, close the function of the response wake-up signal of self.
5. according to the described method of claim 1 or 4, it is characterized in that, after the described false wake-up signal of described shielding, the method also comprises: after the shielding duration of appointment finishes, open the function of response wake-up signal, reenter dormant state, and wake-up times is set is zero, continues real-time detection and whether receive wake-up signal.
6. an active electronic label, is characterized in that, this active electronic label comprises: central processor CPU module, wake-up signal receiver module and data interaction signal receiving module; Wherein,
The CPU module, after receiving the wake-up signal that the wake-up signal receiver module sends, if within the preset data interaction time limit, do not receive the data interaction signal that the data interaction signal receiving module is sent, calculate the transmission frequency of wake-up signal, if the transmission frequency of described wake-up signal higher than preset shielding thresholding, determines that the current wake-up signal of receiving is the false wake-up signal, shields described false wake-up signal;
The data interaction signal receiving module, for sending to the CPU module by the data interaction signal;
The wake-up signal receiver module, for sending to wake-up signal the CPU module.
7. active electronic label according to claim 6, is characterized in that,
Whether described CPU module, receive specifically for detection in real time the wake-up signal that the wake-up signal receiver module is sent.
8. active electronic label according to claim 7, is characterized in that,
Described CPU module, in the calculating duration preset, if receive the wake-up signal that the wake-up signal receiver module is sent, current wake-up times is added to one, until preset calculating duration finishes, using current described wake-up times divided by preset calculating duration income value the transmission frequency as wake-up signal.
9. active electronic label according to claim 8, is characterized in that,
Described CPU module, in the shielding duration in appointment, the function of closing the response wake-up signal of self shields described false wake-up signal.
10. active electronic label according to claim 9, is characterized in that,
Described CPU module, after finishing specifically for the shielding duration when appointment, the function of opening the response wake-up signal, reenter dormant state, and wake-up times is set is zero, continues the wake-up signal whether real-time detection receives that the wake-up signal receiver module is sent.
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Effective date of registration: 20160908 Address after: 300308 Tianjin Airport Economic Zone, Binhai New Area seven East Road No. 2 Zhongxing Industrial Base Applicant after: ZTE INTELLIGENT IOT TECHNOLOGY CO., LTD. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Applicant before: ZTE Corporation |
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