CN201725376U - Wireless wake-up type active student label recognition system - Google Patents

Wireless wake-up type active student label recognition system Download PDF

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Publication number
CN201725376U
CN201725376U CN 201020248155 CN201020248155U CN201725376U CN 201725376 U CN201725376 U CN 201725376U CN 201020248155 CN201020248155 CN 201020248155 CN 201020248155 U CN201020248155 U CN 201020248155U CN 201725376 U CN201725376 U CN 201725376U
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China
Prior art keywords
student
label
card reader
module
recognition system
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Expired - Fee Related
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CN 201020248155
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Chinese (zh)
Inventor
王稳
苗现华
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Chien Shiung Institute of Technology
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Chien Shiung Institute of Technology
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Priority to CN 201020248155 priority Critical patent/CN201725376U/en
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Abstract

The utility model relates to a wireless wake-up type active student label recognition system, including a carry-on student label and a card reader mounted at the school gate, wherein the student label is principally composed of a radio frequency module, a radio frequency antenna and a power supply module, the card reader is principally composed of a receiving radio frequency module, a transmission radio frequency module, a receiving antenna connected to the receiving radio frequency module correspondingly, a transmitting antenna connected to the transmission radio frequency module correspondingly, and a serial communication module, the card reader always sends wireless wake-up signal, when the student label enters into the effective range of the card reader receiving antenna, the student label receives the wireless wake-up signal, and sends its identification numbers and electric quantity status messages to the card reader, and then enters into a dormant state. The recognition system of the utility model not only resolves the problem of abnormal recording caused by forgetting to brush card when a student passes in and out the school gate, the student congestion instance does not take place, and has stronger popularization and application value.

Description

The active student's label recognition system of wireless awakening formula
Technical field
The utility model relates to a kind of radio frequency identification device, relates in particular to be used for that the student enters or the information registration system when leaving school.
Background technology
Machine for punching the card has all been installed on the school doorway by now a lot of schools, allotted the passive radio frequency identification card that shows pupilage to the student, manually swiped the card by the student when the student enters or leave the school gate, machine for punching the card is then preserved needed information get off or is issued other equipment by certain means of communication and use to do him.The weak point of this passive radio frequency identification card is: need the student initiatively going to swipe the card through in the school doorway, swipe the card but often there is the student to forget when the turnover school gate, cause this to bear recording exceptional into school; And because such card generally is no more than 10 centimetres with the communication distance of machine for punching the card, promptly need near swiping the card, the brush read rate is slow, thereby when student's flow is big and easily cause and block up.
Summary of the invention
Thereby the utility model purpose is to provide a kind of and need not just to can read near swiping the card student's label information and avoid forgetting the recognition system of jam of swiping the card or swipe the card.
For achieving the above object, the technical scheme that the utility model adopted is: the active student's label recognition system of a kind of wireless awakening formula, comprise the student's label carried and the card reader that is installed on school's front door, described student's label is mainly by radio-frequency module, radio-frequency antenna and power module are formed, described card reader is mainly by the received RF module, the emission radio-frequency module, receiving antenna with the corresponding connection of received RF module, form with the emitting antenna and the serial communication modular of the corresponding connection of emission radio-frequency module, described emission radio-frequency module sends the wireless awakening signal by emitting antenna always, described student's label has and wakes up and the dormancy two states, in student's label enters the EFFECTIVE RANGE of card reader receiving antenna, student's label receives the wireless awakening signal, and with its identification number, state of charge information enters dormant state after being sent to card reader.
Further, the EFFECTIVE RANGE of described receiving antenna is for being that radius centered is 0~20 meter a distance with the card reader.
The power module of described student's label is button-shaped dry cell.
The received RF module of described card reader is operated in different frequency ranges with the emission radio-frequency module.
The radio-frequency antenna length of described student's label is 2~4cm.
This system also comprises the host computer that the serial communication modular with card reader is electrically connected.
Because the employing of technique scheme, the utlity model has following advantage: the label essence that the utility model student label recognition system is adopted is active radio-frequency card, card reader is sending wake-up signal always, by the EFFECTIVE RANGE of card reader wireless signal is set, as 5 meters, make that working as student's label is in dormant state outside EFFECTIVE RANGE, in the EFFECTIVE RANGE that enters card reader, promptly be waken up, thereby card reader can read the identification number of corresponding student's label, information such as state of charge, then student's label enters dormant state once more, and power consumption is small.The utility model recognition system not only solves the student and causes the recording exceptional problem owing to forgetting to swipe the card when passing in and out school gate, and does not have the situation that the student blocks up and take place, and has stronger application value.
Description of drawings
Accompanying drawing 1 is the active student's label recognition system of a utility model wireless awakening formula theory diagram;
Accompanying drawing 2 is the utility model recognition system user mode figure;
Accompanying drawing 3 is student's label workflow diagram;
Accompanying drawing 4 is the card reader workflow diagram;
Wherein: 1, student's label; 11, radio-frequency module; 12, radio-frequency antenna; 13, power module;
2, card reader; 21, received RF module; 22, emission radio-frequency module; 23, receiving antenna; 24, emitting antenna; 25, serial communication modular;
3, host computer; 10, doorway;
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:
Student's label recognition system as depicted in figs. 1 and 2, the card reader 2 that it comprises a plurality of student's labels 1, connect with student's label 1 radio communication, with the card reader 2 mutual host computer 3 of data mutually.Wherein, described student's label 1 mainly is made up of radio-frequency module 11, radio-frequency antenna 12 and power module 13, in the present embodiment, radio-frequency module 11 is made up of radio frequency chip and a singlechip chip, it is the chip of nRF905 that radio frequency chip can be selected model for use, it is MSP430F2001 that single-chip microcomputer is selected model for use, and radio-frequency antenna 12 directly is printed on the pcb board, and power module 13 adopts the button-shaped dry cell of CR2032.So student's label essence of the present utility model is active radio-frequency card, is built-in with corresponding identity id number at student's label.About the physical circuit of student's label, those skilled in the art get final product specific implementation according to above-mentioned principle, so its concrete circuit of implementing is not repeated them here.
Described student's label 1 has two states, i.e. wake-up states and dormant state, and when radio-frequency module 11 receives the wireless awakening signal, student's label 1 will enter wake-up states; When not receiving the wireless awakening signal, student's label will be in the dormancy low power consumpting state always.
Mainly by receiving and launching two branch roads and form, transmitting branch comprises emission radio-frequency module 22, emitting antenna 24 to card reader 2, and whole branch road sends the wireless awakening signal always when work.Receiving branch comprises received RF module 21, receiving antenna 23, and it is used to receive the information that student's label of being waken up is sent.Simultaneously, received RF module 21 also is connected with a serial communication module 25 jointly with emission radio-frequency module 22, send data to host computer 3 by this serial communication modular 25, host computer 3 can be conventional computer or other equipment, so that other analysis and utilizations are stored or done to the data of registration.
In the present embodiment, the radio- frequency module 21,22 of card reader 2 also adopts model on hardware be that the radio frequency chip of nRF905 and model are that the STC12C5A56S2 singlechip chip is formed.The reach of the wireless awakening signal of card reader 2 can be adjusted to some extent according to concrete occasion, in the present embodiment, the EFFECTIVE RANGE of card reader 2 is for being that radius centered is 5 meters distances in the scope with the card reader, certainly, if the school gate is bigger, the length of the card reader that can extend receiving antenna.About the physical circuit of card reader, those skilled in the art get final product specific implementation according to above-mentioned principle, so its concrete circuit of implementing is repeated no more equally.
Fig. 2 shows the utility model recognition system and uses synoptic diagram, card reader 2 is arranged on the outside near school doorway 10, the effective coverage of card reader 2 wireless signals is shown in multi-turn circle among the figure, setting outmost turns to the distance of card reader is 5 meters, when the student who carries student's label 1 enters school gate or leaves school gate, student's label 1 will be waken up in 5 meters radius by card reader 2, then student's label will periodically send data message to card reader 2, this information comprises the id number that shows this label identity, whether battery owes electricity needs replacing etc., after card reader 2 receives these data messages, can these data messages be sent to computing machine by the RS232 serial communication modular.
Above-mentioned the utility model recognition system functional structure is illustrated, will be introduced the recognition methods of card reader in the utility model below student's label:
Fig. 3 and Fig. 4 have provided the workflow of student's label and card reader respectively, at first, effective range to work period, awake window time and the card reader of each student's label is set, in the present embodiment, student's label work period is 2s, it is the window time of waking label up that 1.2ms is arranged in the 2s, and the effective range of card reader is to be in the scope of 5 meters of radius centered with it; Open the card reader working power, the transmitting branch of card reader sends the wireless awakening signal always, and waking frequency up is 423.4MHz, sends the power 10dBm of data; Simultaneously, receiving branch works in receiving mode always, and the frequency of work is 433.2MHz.For student's label, outside distance card reader wireless signal EFFECTIVE RANGE, it is in dormant state always, in the system that present embodiment provided, adopt the radio frequency chip nRF905 of the external crystal oscillator of 16M, power consumption representative value when power-down mode only is 2.5 μ A, and the single-chip microcomputer power consumption is no more than 1 μ A.When student's label is waken up, the power consumption representative value 12.2mA of radio frequency chip nRF905, the single-chip microcomputer power consumption also is no more than 100 μ A.So whole student's label is low-power consumption work, this has guaranteed the work that battery is permanently effective.
Enter the EFFECTIVE RANGE of card reader when student's label, it is waken up in the time of 1.2ms, afterwards, it sends the data that once show own identity and battery status every 2s, and at this moment, student's label promptly is in wake-up states, card reader promptly can read the information of corresponding student's label, afterwards, student's label enters dormant state once more, thereby finishes entire identification process.
Need to prove that in the specific implementation, the wireless awakening signal that card reader sends will have certain intensity and will continuously launch; The window time of student's label when waking frequency up and enter receiving mode can not be oversize, and the time is long then to produce big power consumption; The radio-frequency antenna size of student's label can not be oversize, gets final product about 3cm, and antenna size is long more, approaches the quarter-wave of 433MHz signal more, and then the label distance that can be waken up, the distance of communicating by letter with card reader are far away more.For the bigger occasion in some school gate, can consider the student's label antenna that extends; The receiving antenna of card reader and emitting antenna will leave certain distance when putting, the present invention sets 2 meters spacing, and this is that the signal of wireless awakening signal reading card device receives big interference because two antenna distances are too near; Student's label wake frequency and its transmission data up the time frequency to stagger, specifically selecting what frequency can be exactly that the wireless awakening signal can not reading card device self radio Data Receiving cause interference by reality test decision in principle.
The foregoing description can not be thought the qualification to the technical scheme of the utility model label recognition system, and every equivalent transformation of taking according to technical solutions of the utility model also should be in protection domain of the present utility model.

Claims (6)

1. active student's label recognition system of wireless awakening formula, comprise the student's label (1) carried and the card reader (2) that is installed on school's front door, it is characterized in that: described student's label (1) is mainly by radio-frequency module (11), radio-frequency antenna (12) and power module (13) are formed, described card reader (2) is mainly by received RF module (21), emission radio-frequency module (22), receiving antenna (23) with the corresponding connection of received RF module (21), form with the emitting antenna (24) and the serial communication modular (25) of the corresponding connection of emission radio-frequency module (22), described emission radio-frequency module (22) sends the wireless awakening signal by emitting antenna (24) always, described student's label (1) has and wakes up and the dormancy two states, in student's label (1) enters the EFFECTIVE RANGE of card reader (2) receiving antenna (23), student's label (1) receives the wireless awakening signal, and with its identification number, the state of charge data enter dormant state after being sent to card reader (2).
2. the active student's label recognition system of wireless awakening formula according to claim 1 is characterized in that: the EFFECTIVE RANGE of described receiving antenna (23) is for being that radius centered is 0~20 meter a distance with card reader (2).
3. the active student's label recognition system of wireless awakening formula according to claim 1 and 2 is characterized in that: the power module (13) of described student's label (1) is button-shaped dry cell.
4. the active student's label recognition system of wireless awakening formula according to claim 1 is characterized in that: the received RF module (31) of described card reader (2) is operated in different frequency ranges with emission radio-frequency module (32).
5. the active student's label recognition system of wireless awakening formula according to claim 1 is characterized in that: radio-frequency antenna (12) length of described student's label (1) is 2~4cm.
6. the active student's label recognition system of wireless awakening formula according to claim 1 is characterized in that: this system also comprises the host computer (3) that the serial communication modular (25) with card reader (2) is electrically connected.
CN 201020248155 2010-07-05 2010-07-05 Wireless wake-up type active student label recognition system Expired - Fee Related CN201725376U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101968901A (en) * 2010-07-05 2011-02-09 健雄职业技术学院 Wireless awakening active student label identification system and identification method thereof
CN102938169A (en) * 2012-11-23 2013-02-20 镇江三鑫科技信息有限公司 Wireless-network-based campus access monitoring system
CN106504483A (en) * 2016-09-13 2017-03-15 广东小天才科技有限公司 A kind of alarm method and warning device for being applied to campus, warning system
CN106658686A (en) * 2016-12-30 2017-05-10 广东欧珀移动通信有限公司 Data forwarding method and access device
CN106851737A (en) * 2016-12-30 2017-06-13 广东欧珀移动通信有限公司 A kind of method for sending upstream data, and terminal device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101968901A (en) * 2010-07-05 2011-02-09 健雄职业技术学院 Wireless awakening active student label identification system and identification method thereof
CN102938169A (en) * 2012-11-23 2013-02-20 镇江三鑫科技信息有限公司 Wireless-network-based campus access monitoring system
CN106504483A (en) * 2016-09-13 2017-03-15 广东小天才科技有限公司 A kind of alarm method and warning device for being applied to campus, warning system
CN106504483B (en) * 2016-09-13 2018-09-04 广东小天才科技有限公司 It is a kind of applied to the alarm method and warning device in campus, alarm system
CN106658686A (en) * 2016-12-30 2017-05-10 广东欧珀移动通信有限公司 Data forwarding method and access device
CN106851737A (en) * 2016-12-30 2017-06-13 广东欧珀移动通信有限公司 A kind of method for sending upstream data, and terminal device
CN106851737B (en) * 2016-12-30 2020-01-14 Oppo广东移动通信有限公司 Method for sending uplink data and terminal equipment
CN106658686B (en) * 2016-12-30 2020-01-14 Oppo广东移动通信有限公司 Data forwarding method and access device

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Granted publication date: 20110126

Termination date: 20130705