CN201876920U - Electronic label waking device - Google Patents
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- CN201876920U CN201876920U CN2010205709276U CN201020570927U CN201876920U CN 201876920 U CN201876920 U CN 201876920U CN 2010205709276 U CN2010205709276 U CN 2010205709276U CN 201020570927 U CN201020570927 U CN 201020570927U CN 201876920 U CN201876920 U CN 201876920U
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Abstract
The utility model discloses an electronic label waking device which mainly solves the problems that the existing electronic label waking device is easy to cause failed treatment, excessive loss of the electricity of a battery is caused, and the sensitivity can not be adjusted. The electronic label waking device comprises a plurality of waking links with different sensitivity, a microcontrol unit, a mode selection unit and a data receiving link, wherein each waking link detects a radio frequency signal of an electronic label, and outputs a corresponding waking signal by an output end, a plurality of I/O(input/output) ends of the microcontrol unit are respectively connected the output ends of the waking links with different sensitivity, the microcontrol unit is used for converting the electronic label to a data receiving state from a dormant state through the waking signal(s) of one or more than one waking links according to a pre-selected working mode, the mode selection unit is connected with the microcontrol unit and is used for pre-selecting a working mode of the microcontrol unit, the data receiving link is used for receiving the electronic label data, and the output end of the data receiving link is connected with the data input end of the microcontrol unit.
Description
Technical field
The utility model relates to a kind of Rouser, particularly a kind of electronic tag Rouser of scalable sensitivity.
Background technology
No-stop charging system (claims E-payment system Electronic Toll Collection System again, be called for short the ETC system) utilize automatic vehicle identification (Automatic Vehicle Identification is called for short AVI) technology to finish the wireless data communication between vehicle and the charge station, carry out the exchange of automatic vehicle identification and relevant charge data, carry out the processing of charge data by the computing machine networking, the full-electronic Fare Collection System of charge automatically of realizing not stopping.
ETC is a kind of automatic electronic charging system that is used for highway, bridge and tunnel that develops and promote of making great efforts in the world.The existing abroad long developing history of this technology, the local networking of the E-payment system of many countries and regions such as the U.S., Europe also progressively forms scale and benefit.China is medium with IC-card, magnetic card, and adopting the manual toll collection mode is the influence that main highway networked fee collection mode also is subjected to this trend undoubtedly.
RSU is roadside unit (Road-Side Units is called for short RSU), is called electronic label read/write, trackside read-write antenna, ETC antenna, roadside device again, is made up of microwave antenna and read-write controller.Be installed in antenna and control corresponding equipment that being used on the lane in which the drivers should pay fees door frame or on the toll island column communicates with the mobile unit on the vehicular traffic.
OBU is board units (On Board Unit, be called for short OBU), be called electronic tag, mobile unit again, be a kind of mobile identification equipment, be installed in vehicle interior (on windshield or the instrument desk) and support to utilize Dedicated Short Range Communications, and equipment that roadside device carries out message exchange with microwave communication function and information storage function.OBU itself both can be used as independently that data carrier becomes the one chip electronic tag, also can realize expanded data storage, processing, access control function, and become the double-disk electronic tag by additional smart card read-write interface.
OBU is because of its application scenarios and adopt non-rechargeabel disposable battery power supply plan to determine its work that following characteristics will be arranged:
1) stable waking up carried out work in the trading range of RSU, and guarantees that once success causes the working time to prolong the power consumption of bringing with reduction because of the transaction again of failing;
2) in non-RSU transaction zone, avoid being waken up by other signals as far as possible, thus the electric quantity loss that causes.
Rouser of the prior art generally uses single cover to wake link up, the edge unstable region of RSU coverage can not be avoided, and also can not avoid the false wake-up in the inoperative zone, causes Fail Transaction easily, causes the excessive loss of battery electric quantity.
Existing label wakes scheme up:
Entire equipment has one to wake the link unit up, mainly by detector diode, the one pole transistor amplifier is formed, generally single-chip microcomputer is in the dormant state of low-power consumption, wake-up signal is connected on the IO pin with interrupt function of single-chip microcomputer, when working signal is received, radiofrequency signal generates the base band small-signal by the detection of diode, then amplify the back and insert single-chip microcomputer (micro-control unit) by the one pole transistor amplifier, single-chip microcomputer (micro-control unit) is transferred to the data receiving state of high power consumption from the dormant state of low-power consumption, just normal duty.
Because existing label Rouser has only one to overlap the fixing link that wakes up, poor sensitivity easily by false wake-up, causes the excessive loss of Fail Transaction and battery electric quantity, and then influences the work efficiency of Rouser.
Summary of the invention
The purpose of this invention is to provide a kind of novel electronic label Rouser, mainly solve existing label Rouser and have only a cover to wake link up, can not regulate its sensitivity, influence the problem of Rouser work efficiency.
According to an aspect of the present utility model, a kind of electronic tag Rouser is provided, comprising: a plurality of links that wake up with different sensitivity, its each wake the radiofrequency signal of link detecting electronic tag up, and export corresponding wake-up signal via output terminal; Micro-control unit, its a plurality of I/O end connects described a plurality of output terminal that wakes link up with different sensitivity respectively, is used for one or more wake-up signals that wake link up that the mode of operation utilization by preliminary election received it is transformed into data receiving state from dormant state.
Wherein, waking link up comprises: the electronic tag radiofrequency signal is carried out detection to generate the detecting circuit of baseband signal; The amplifying circuit that connects described detecting circuit output terminal is used to amplify described baseband signal; The signal transformation circuit that connects described amplification circuit output end, its output terminal connect the I/O end of described micro-control unit, are used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
Preferably, signal transformation circuit is the RC circuit.
Wherein, the electronic tag Rouser also comprises the mode selection module of selecting to connect described micro-control unit, is used for the mode of operation of the described micro-control unit of preliminary election.
Wherein, mode selection module is the module that is provided with keyswitch and button.
Preferably, a plurality of links that wake up with different sensitivity comprise:
High sensitivity is waken link up, comprise first detecting circuit, first amplifying circuit that connects the described first detecting circuit output terminal and first signal transformation circuit that connects described first amplification circuit output end, first amplifying circuit wakes link to the base band enlargement factor up greater than other, the first signal transformation circuit output terminal connects the I/O end of described micro-control unit, be used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal;
Muting sensitivity is waken link up, comprise second detecting circuit, second amplifying circuit that connects the described second detecting circuit output terminal and the secondary signal shaping circuit that connects described second amplification circuit output end, second amplifying circuit wakes link to the base band enlargement factor up less than high sensitivity, secondary signal shaping circuit output terminal connects the 2nd I/O end of described micro-control unit, be used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
Wherein, an I/O of micro-control unit end and the 2nd I/O end are the I/O ends with interrupt function.
Wherein, also comprise the mode selection module that connects described micro-control unit, be used for the mode of operation of the described micro-control unit of preliminary election;
Wherein said mode of operation comprises:
Micro-control unit wakes the wake-up signal of link output up according to muting sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to high sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to wake-up signal and high sensitivity that muting sensitivity is waken link output up, is transformed into data receiving state from dormant state.
Compared with prior art, the beneficial effects of the utility model are:
1, wakes the link collaborative work up by different sensitivity, effectively avoid the false wake-up that causes because of the inoperative frequency band signals, avoid the excessive loss of battery electric quantity.Effectively improve a Transaction Success rate after label enters the perform region, avoid because of waking the situation that causes Fail Transaction up at perform region edge signal unstable region.Avoid initiating the electric quantity loss that the secondary transaction causes because of waking the back Fail Transaction too early up.
2, this device have in the design of the arousal function of electronic tag that cost is low, characteristics such as reliable operation, realization are simple, low in energy consumption, environmental protection, can be widely used in needs in the arouse machine processed circuit arrangement, for example in ETC system and the ambiguous path recognition system.
3, a plurality of different sensitivity are waken link up and can be selected different mode of operations, and effectively solving existing electronic tag only has a cover to wake link up, and the problem of unadjustable sensitivity.
4, waking link up increases signal transformation circuit, improves the integrality of signal.
Description of drawings
Fig. 1 is the link structure block diagram that the utility model wakes link and micro-control unit up;
Fig. 2 is the syndeton block diagram of the utility model embodiment one;
Fig. 3 is that high sensitivity is waken the link structure block diagram up among the embodiment one;
Fig. 4 is that muting sensitivity is waken the link structure block diagram up among the embodiment one;
Fig. 5 is the syndeton block diagram of the utility model embodiment two.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is elaborated, should be appreciated that following illustrated preferred embodiment only is used for description and interpretation the utility model, and be not used in qualification the utility model.
The utility model proposes a kind of electronic tag Rouser, as shown in Figure 1, comprise a micro-control unit and a plurality of link that wakes up with different sensitivity, each wakes the radiofrequency signal of link detecting electronic tag up, and exports corresponding wake-up signal via output terminal; The a plurality of I/O end of micro-control unit connects a plurality of output terminals that wake link up with different sensitivity respectively, is used for one or more wake-up signals that wake link up that the mode of operation utilization by preliminary election received it is transformed into data receiving state from dormant state.
Embodiment one, and as shown in Figure 2, as optimal way, a plurality of in the utility model have waking link up and can only selecting two and wake link up of different sensitivity, comprises that muting sensitivity is waken link up and high sensitivity is waken link up.Electronic tag Rouser integrated circuit comprises that mainly micro-control unit, power module, energy supply control module, Data Receiving link, mode selection module, high sensitivity are waken link up, muting sensitivity is waken link up.
Wherein, micro-control unit is the high-performance single-chip microcomputer with strong calculation process ability, it detects the wake-up signal that wakes link up in real time by interrupt mode, the break-make of the whole plate each several part power supply of micro-control unit controls, micro-control unit switches to the detected state of low-power consumption according to the signal that wakes link up from the dormant state of low-power consumption, and the signal that wakes link up by muting sensitivity switches to duty again.
Power module comprises power pack, power pack is the dc power supply of vehicle power, as battery etc., power module and micro-control unit, Data Receiving link, energy supply control module, high sensitivity are waken link up and are waken devices such as link with muting sensitivity up and link to each other, and are its power supply.
Energy supply control module comprises the classification power control circuit, link to each other with power module with micro-control unit, and the control power module is each part mentioned above power supply that it is specially by micro-control unit controls energy supply control module and then control power module and externally powers.
The Data Receiving link, by the power module power supply, its output terminal connects the data input pin of described micro-control unit.The Data Receiving link is that receiving ability is waken all strong signal reception link of link up than high and low two.
Mode selection module comprises button and the keyswitch on the structural member, it directly links to each other with micro-control unit, the look-at-me that its produces inserts micro-control unit, and micro-control unit can come switching working mode according to the number of times that current state and user press button.
High sensitivity is waken link up for comprising first detecting circuit, first amplifying circuit, first signal transformation circuit, by power module is its power supply, and be connected with micro-control unit by its first signal transformation circuit, signal after the shaping is passed to micro-control unit, the enlargement factor of its amplifying circuit is waken the enlargement factor of link amplifying circuit up greater than muting sensitivity, can work under the more weak signal of intensity so that it wakes link up with respect to muting sensitivity.With respect to the existing link scheme of waking up, increase signal transformation circuit, improve signal integrity.
The preferred detector diode of detecting circuit wherein, radiofrequency signal that can the detected electrons label.
The preferred one pole transistor amplifier of amplifying circuit wherein, the input end of one pole transistor amplifier links to each other with the detecting circuit output terminal, the enlargement factor that realizes regulating amplifying circuit by the bigoted voltage of regulating in its discharge circuit, the enlargement factor of above-mentioned first amplifying circuit is bigger, satisfies and is waking electronic tag up than under the small-signal.
The preferred RC circuit of signal transformation circuit wherein, because the RC circuit is a passive device, cost is low, it is little to take volume, simple in structure, the input end of RC circuit links to each other with the output terminal of amplifying circuit, and the signal after the amplifying circuit amplification is carried out signal shaping, the output terminal of RC circuit links to each other with micro-control unit, is used for wake-up signal is transferred to micro-control unit.
Detecting circuit, amplifying circuit and signal transformation circuit also can be selected the circuit of other same or similar functions according to actual needs.
Muting sensitivity wakes link up and high sensitivity is waken the link circuit structure up and principle is basic identical, wake link up by what second detecting circuit, second amplifying circuit, secondary signal shaping circuit were formed, by power module is its power supply, and be connected with micro-control unit by the secondary signal shaping circuit, signal after the shaping is passed to micro-control unit, and it wakes link up with respect to high sensitivity and need work under the stronger signal of intensity.With respect to the existing link scheme of waking up, increase signal transformation circuit, improve signal integrity.
Wherein high sensitivity is waken link up and is waken the about 6dB of multiple that the sensitivity of link can improve up than muting sensitivity.
Wherein, the mode selection module of micro-control unit is used for the mode of operation of preliminary election micro-control unit; Wherein mode of operation comprises:
Micro-control unit wakes the wake-up signal of link output up according to muting sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to high sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to wake-up signal and high sensitivity that muting sensitivity is waken link output up, is transformed into data receiving state from dormant state.
Wherein, the electronic tag Rouser also comprises the Data Receiving link that receives electronic tag data, and its output terminal connects the data input pin of described micro-control unit.The Data Receiving link is that receiving ability is waken all strong signal reception link of link up than high and low two.
Wherein, high sensitivity is waken link up as shown in Figure 3, comprising:
The electronic tag radiofrequency signal is carried out detection to generate first detecting circuit of baseband signal;
Connect first amplifying circuit of the described first detecting circuit output terminal, be used to amplify described baseband signal;
First signal transformation circuit that connects described first amplification circuit output end, its output terminal connect the I/O end of described micro-control unit, are used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
Wherein, muting sensitivity is waken link up as shown in Figure 4, comprising:
The electronic tag radiofrequency signal is carried out detection to generate second detecting circuit of baseband signal;
Connect second amplifying circuit of the described second detecting circuit output terminal, be used to amplify described baseband signal;
The secondary signal shaping circuit that connects described second amplification circuit output end, its output terminal connect the 2nd I/O end of described micro-control unit, are used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
In addition, an I/O of micro-control unit end and the 2nd I/O end are the I/O ends with interrupt function.
Wherein, mode selection module is the module that is provided with keyswitch and button.
The mode selection module basic functional principle is in of the present invention:
Equipment can pass through man-machine interface (keyswitch) and select three kinds of patterns, and having eliminated only has a cover to wake the disadvantage that link cannot be adjusted sensitivity up at present.
Pattern one: the single channel high sensitivity is waken link (be applicable to the Transaction Success rate of not paying close attention to a time, vehicle windscreen is to the big scene of working signal decay) up
Pattern two: the single channel muting sensitivity is waken link (be applicable to the Transaction Success rate of not paying close attention to a time, vehicle windscreen is to the little scene of working signal decay) up
Pattern three: two-way wakes link collaborative work (being applicable to the scene of paying close attention to a Transaction Success rate) up
When user's preference pattern for the moment, single-chip microcomputer has the dormant state of low-power consumption and the duty of high power consumption; Single-chip microcomputer is in the dormant state of low-power consumption at ordinary times, wake-up signal is connected on the IO pin with interrupt function of single-chip microcomputer, when working signal is received, radiofrequency signal generates the base band small-signal by the detection of diode, after then amplifying by amplifying circuit, insert single-chip microcomputer through signal transformation circuit again, but setting by amplifying circuit, it is higher relatively to wake sensitivity up, single-chip microcomputer is transferred to the data receiving state of high power consumption from the dormant state of low-power consumption, just normal duty.
When user's preference pattern two, single-chip microcomputer has the dormant state of low-power consumption and the duty of high power consumption; Single-chip microcomputer is in the dormant state of low-power consumption at ordinary times, wake-up signal is connected on the IO pin with interrupt function of single-chip microcomputer, when working signal is received, radiofrequency signal generates the base band small-signal by the detection of diode, after then amplifying by amplifying circuit, insert single-chip microcomputer through signal transformation circuit again, but setting by amplifying circuit, it is relatively low to wake sensitivity up, single-chip microcomputer is transferred to the data receiving state of high power consumption from the dormant state of low-power consumption, just normal duty.
When paying close attention to one-time success rate and wish, the user saves under the situation of electric energy.Can select mode of operation three, its course of work is: micro-control unit mainly is divided into three kinds of patterns of mode of operation of the dormant state of low-power consumption, the detected state of low-power consumption, high power consumption.Electronic tag is not when entering the working signal zone, and during not with frequency band noise signal, micro-control unit is operated in the dormant state of low-power consumption, when electronic tag progresses into the perform region, at first be certain jitter zone, not necessarily dull at this regional signal.When high sensitivity is waken link detecting to signal up, it is delivered to the pin of micro-control unit, micro-control unit adopts interrupt mechanism to go to detected state from dormant state, along with electronic tag moves to the signal stabilization zone of perform region, muting sensitivity wake the link output signal of also starting working up, at this moment micro-control unit detects muting sensitivity and wakes the duty that enters Data Receiving behind the signal of link from detected state up.
Enter the perform region at electronic tag from the inoperative zone, micro-control unit switches to the detected state of low-power consumption respectively from the dormant state of low-power consumption, is entered the duty of high power consumption again by detected state, finishes once and changes dormant state over to after the transaction.Yet traditional electronic tag has only a cover to wake link up, higher in order to guarantee the common sensitivity of wake-up effect, so the jitter zone in the perform region is promptly changed over to duty, thereby very likely because of the data failure that receives of signal intensity shakiness, cause this Fail Transaction, so must initiate transaction for the second time, thereby increase the T.T. of work, cause power consumption to increase.
At electronic tag other situations with the frequency range noise are arranged in the inoperative zone, micro-control unit changes the detected state of low-power consumption over to from the dormant state of low-power consumption, but because the waking link up and can not produced signal with the frequency range noise of muting sensitivity, so micro-control unit can change the dormant state of low-power consumption once more over to.Yet traditional electronic tag so be directly switch into duty by the noise signal with frequency range from dormant state easily, causes the increase of power consumption owing to have only a cover to wake link up.
Select as another kind, embodiment two, as shown in Figure 5, a plurality of in the utility model have waking link up and also can selecting three different sensitivity to wake link up of different sensitivity, comprise that high sensitivity is waken link up, medium sensitivity wakes link up and muting sensitivity is waken link up.Electronic tag Rouser integrated circuit comprises that mainly micro-control unit, power module, energy supply control module, Data Receiving link, mode selection module, high sensitivity are waken link up, medium sensitivity wakes link up and muting sensitivity is waken link up.
Wherein micro-control unit, power module, energy supply control module, Data Receiving link, mode selection module, high sensitivity are waken link and muting sensitivity up to wake link up similar to the circuit structure principle among the embodiment one, be not described in detail in this, the medium sensitivity that increases newly is waken link up
Medium sensitivity is waken link and high sensitivity up and is waken link and muting sensitivity up to wake the link circuit structure up basic identical, also wake link up by what detecting circuit, amplifying circuit, signal transformation circuit were formed, by power module is its power supply, and be connected with micro-control unit by signal transformation circuit, signal after the shaping is passed to micro-control unit, make its working signal wake link up and muting sensitivity is waken up between the signal of link between high sensitivity by regulating its amplifying circuit.
The preferred detector diode of detecting circuit wherein, radiofrequency signal that can the detected electrons label.
The preferred one pole transistor amplifier of amplifying circuit wherein, the input end of one pole transistor amplifier links to each other with the detecting circuit output terminal, the enlargement factor that realizes regulating amplifying circuit by the bigoted voltage of regulating in its discharge circuit.
The preferred RC circuit of signal transformation circuit wherein, because the RC circuit is a passive device, cost is low, it is little to take volume, simple in structure, the input end of RC circuit links to each other with the output terminal of amplifying circuit, and the signal after the amplifying circuit amplification is carried out signal shaping, the output terminal of RC circuit links to each other with micro-control unit, is used for wake-up signal is transferred to micro-control unit.
Detecting circuit, amplifying circuit and signal transformation circuit also can be selected the circuit of other same or similar functions according to actual needs.
Wherein, mode selection module can wake link up according to muting sensitivity, medium sensitivity is waken link up and selected different mode of operations with the various various combinations that high sensitivity is waken link up, and wake micro-control unit up by selected mode of operation and be transformed into data receiving state by dormant state, for example: select to have only low sensitivity to wake the link mode of operation up, selection has only high sensitivity to wake link up or medium sensitivity is waken the link mode of operation up, select these the three kinds mode of operations of combination in twos of waking link up, select these three kinds to wake link mode of operation simultaneously up.
Selection for different working modes can artificially be selected according to actual conditions.
As if the link that wakes up of four of the utility model uses or more different sensitivity, its circuit structure and the foregoing description one and embodiment two are similar, do not repeat them here.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (8)
1. an electronic tag Rouser is characterized in that, comprising:
A plurality of links that wake up with different sensitivity, its each wake the radiofrequency signal of link detecting electronic tag up, and export corresponding wake-up signal via output terminal;
Micro-control unit, its a plurality of I/O end connects described a plurality of output terminal that wakes link up with different sensitivity respectively, is used for one or more wake-up signals that wake link up that the mode of operation utilization by preliminary election received it is transformed into data receiving state from dormant state.
2. electronic tag Rouser according to claim 1 is characterized in that, the described link that wakes up comprises:
The electronic tag radiofrequency signal is carried out detection to generate the detecting circuit of baseband signal;
The amplifying circuit that connects described detecting circuit output terminal is used to amplify described baseband signal;
The signal transformation circuit that connects described amplification circuit output end, its output terminal connect the I/O end of described micro-control unit, are used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
3. electronic tag Rouser according to claim 2 is characterized in that, described signal transformation circuit is the RC circuit.
4. electronic tag Rouser according to claim 1 is characterized in that, also comprises the mode selection module of selecting to connect described micro-control unit, is used for the mode of operation of the described micro-control unit of preliminary election.
5. novel electronic label Rouser according to claim 4 is characterized in that, described mode selection module is the module that is provided with keyswitch and button.
6. electronic tag Rouser according to claim 1 is characterized in that, described a plurality of links that wake up with different sensitivity comprise:
High sensitivity is waken link up, comprise first detecting circuit, first amplifying circuit that connects the described first detecting circuit output terminal and first signal transformation circuit that connects described first amplification circuit output end, first amplifying circuit wakes link to the base band enlargement factor up greater than other, the first signal transformation circuit output terminal connects the I/O end of described micro-control unit, be used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal;
Muting sensitivity is waken link up, comprise second detecting circuit, second amplifying circuit that connects the described second detecting circuit output terminal and the secondary signal shaping circuit that connects described second amplification circuit output end, second amplifying circuit wakes link to the base band enlargement factor up less than high sensitivity, secondary signal shaping circuit output terminal connects the 2nd I/O end of described micro-control unit, be used for the baseband signal of having amplified is carried out shaping, with the output wake-up signal.
7. electronic tag Rouser according to claim 6 is characterized in that, the I/O end of described micro-control unit and the 2nd I/O end are the I/O ends with interrupt function.
8. electronic tag Rouser according to claim 4 is characterized in that, also comprises the mode selection module that connects described micro-control unit, is used for the mode of operation of the described micro-control unit of preliminary election;
Wherein said mode of operation comprises:
Micro-control unit wakes the wake-up signal of link output up according to muting sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to high sensitivity, is transformed into data receiving state from dormant state;
Micro-control unit wakes the wake-up signal of link output up according to wake-up signal and high sensitivity that muting sensitivity is waken link output up, is transformed into data receiving state from dormant state.
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| CN2010205709276U CN201876920U (en) | 2010-10-21 | 2010-10-21 | Electronic label waking device |
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| CN2010205709276U CN201876920U (en) | 2010-10-21 | 2010-10-21 | Electronic label waking device |
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