A kind of RFID sensing tag system for monitoring storing unit state
Technical field
The utility model relates to a kind of RFID sensing tag system for monitoring storing unit state, especially refers to a kind of security protection, logistics transportation, classified papers keeping field of being applied to, based on the RFID sensing tag system of active RFID technology.
Background technology
Development along with electronic tag and sensor technology, electronic tag not only can be attached on the article to be identified electronic marker as article to be identified, can also combined sensor as a kind of instrument of monitoring articles storing unit state, for example utilize electronic tag to add the temperature sensor and monitor the state of temperature of store food refrigerator-freezer or utilize electronic tag to add the humidity sensor and monitor the moisture condition of depositing pharmaceutical warehouse.The specific physical state-change that sensing label can detect the label upper sensor is converted to digital signal and sends by wireless radio-frequency; Behind the receiving trap receive data through process realizing the monitoring to the pannier device state.
Except the monitoring to temperature and humidity, sensing label can also be used in the monitoring whether storing unit is illegally opened.For instance: can in logistics transportation case (cabinet, box) or this class storing unit of file Storage Cabinets, place the time that sensing label record carrying case (cabinet, box), Storage Cabinets illegally opened and be real-time transmitted to Surveillance center and realize that abnormal start-up reports to the police.
Current for the monitoring of illegally opening, generally all just adopt the tamper-evident electronic tag or realize in conjunction with the sensing label of electronic tag and optical sensor.
The tamper-evident electronic tag is the electronic tag that has added line of weakness, need to stick on the aperture position of storing unit during use, in case storing unit is illegally opened, electronic tag also can be damaged along line of weakness, make again normal operation of electronic tag, thereby infer stolen opening of corresponding storing unit.Although the electronic tag of tamper-evident can detect the situation that storing unit is illegally opened, but can not know that time of being opened can not Real Time Monitoring, and electronic tag is at last also can be because storing unit is normally opened damaged, so each electronic tag is only to use once.Although and use light sensation sensing label can be noted down the time and accomplish Real Time Monitoring, for being in illegally opening of dark state, the light sensation sensing label is just brought into play less than effect.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of RFID sensing tag system that can reuse sensing label, can easily accomplish reliably Real Time Monitoring.
The technical scheme that the invention for solving the technical problem adopts is:
A kind of RFID sensing tag system for monitoring storing unit state, comprise the RFID sensing label for detection of the storing unit state, sensing label receiver and the computing machine that the RFID sensing label is monitored, described RFID sensing label be arranged on the storing unit and with the wireless connections of sensing label receiver, the sensing label receiver links to each other with computing machine, described RFID sensing label comprises the magnetic strength sensor of knowing the storing unit storage configuration by detecting the magnetic field value power, be used for sending and/or receiving the radio frequency chip of wireless signal, micro-control unit reaches the power supply that power supply is provided for circuit, described magnetic strength sensor, radio frequency chip is connected with micro-control unit respectively with power supply, and the open position corresponding with the magnetic strength sensor is coated with magnetic material or embeds magnet on the described storing unit.
Described RFID sensing label has increased by one group of magnetic strength sensor at original RFID label, need to be coated with the last layer magnetic material on the open position of the corresponding magnetic strength sensor of storing unit or embed magnet, described magnetic strength sensor is known the storage configuration of storing unit by the power that detects magnetic field, after the RFID sensing label is installed, storing unit is in normal closed condition, magnetic material or magnet and magnetic strength sensor form intrinsic distance and fixing magnetic field value, when storing unit is opened, the distance of magnetic material or magnet and magnetic strength sensor can be zoomed out simultaneously and cause the detected magnetic field value of magnetic strength sensor to weaken, the RFID sensing label infers by the magnetic field of detecting storing unit whether storing unit is illegally opened according to this principle, when magnetic field value is attenuated to certain threshold values, judge that namely the residing storing unit structure of RFID sensing label changes or illegally opened, this moment, micro-control unit recorded current event time of origin and status information, and sent alerting signal by radio frequency chip near sensing label receiver.
Wherein the sensing label receiver is connected with computing machine is wired or wireless, and on the one hand the sensing label receiver receives the information from the RFID sensing label, receives on the other hand from the steering order of computing machine and send to specify one or more RFID sensing labels.
RFID sensing tag system application software is installed in the described computing machine, and this application software receives all from the storing unit status information of RFID sensing label and shows in real time on administration interface and be saved in the database; Computing machine passes through RFID sensing tag system application software to RFID sensing label sending controling instruction.Managerial personnel can be by RFID sensing tag system application software Real Time Monitoring storing unit state, and send instruction to a certain or some or all RFID sensing labels by this software.
Further, described RFID sensing label also comprises the external memory storage that detects data for store status, and described external memory storage is connected with micro-control unit.External memory storage can record more detailed status information for increasing the storage volume of RFID sensing label.
Further, after described RFID sensing label detects storing unit and is opened, the RFID sensing label records current status information and sends relevant warning message to the sensing label receiver, if detect in the RFID sensing label environment of living in and do not have the sensing label receiver, then warning message is kept at the inside of RFID sensing label, when the RFID sensing label detects the sensing label receiver, the warning message of preserving initiatively is sent to the sensing label receiver, and carries out alarm indication by sensing label receiver transmission warning message to computing machine.The RFID sensing label still can be worked under the state that does not have the sensing label receiver in this setting, guarantees that the storage configuration of storing unit can transfer in the computing machine, and its security and practicality are better.
Wherein above-mentioned warning message can be saved in the built-in memory module or external storage of micro-control unit.
Further, the RFID sensing label after setting enters sleep state automatically, is opened or arrives the default return time and just enter mode of operation detecting storing unit.After setting the RFID sensing label, micro-control unit on the RFID sensing label, radio frequency chip and pilot lamp enter sleep state, the magnetic strength sensor then is in mode of operation, when the magnetic strength sensor detect storing unit be opened after or reach default return during the time, waking micro-control unit, radio frequency chip and pilot lamp up operates accordingly, this design can reduce the power consumption of RFID sensing label, makes the time of its use more lasting.
Further, described RFID sensing label comprises that also described light sensation sensor is connected with micro-control unit for the light sensation sensor of knowing the storing unit storage configuration by detecting light intensity.Cooperate the light sensation sensor can further strengthen accuracy and the validity of RFID sensing label state-detection.
Further, described RFID sensing label also comprises the warming sensor for detection of temperature, and described warming sensor is connected with micro-control unit.By the warming sensor temperature of the described position of storing unit is detected and to obtain more comprehensively storage configuration information.
Further, described RFID sensing label also comprises the wet propagated sensation sensor for detection of humidity, and described wet propagated sensation sensor is connected with micro-control unit.By wet propagated sensation sensor the humidity of the described position of storing unit is detected the more comprehensive storage configuration information that can obtain.
Alternatively, described RFID sensing label can also be realized storing unit is done more many-sided monitoring in conjunction with other sensors.
Further, described RFID sensing label also comprises the electric quantity detecting circuit for detection of electric quantity of power supply, and described electric quantity detecting circuit links to each other with micro-control unit with power supply respectively.Can send to computing machine the dump energy information of RFID sensing label by electric quantity detecting circuit RFID sensing label.
Further, described RFID sensing label also comprises button and the pilot lamp that operates for the user, and described button and pilot lamp link to each other with micro-control unit.Button and pilot lamp can carry out associative operation to the RFID sensing label for the staff, as opening, close RFID sensing label etc.
The information content that the RFID sensing label sends to computing machine includes but not limited to tag number, time on date, testing result and the power supply status etc. of RFID sensing label, managerial personnel can be known learn situation that certain storing unit occured illegally to open certain period and the electric weight of RFID sensing label remainder.The instruction that computing machine sends to the RFID sensing label detects, stops detection except general beginning and extracts the RFID sensing label label information, also includes but not limited to micro-control unit, the radio frequency chip sleep instruction that arranges in order to lower RFID sensing label power consumption and makes things convenient for managerial personnel to seek the searching instruction of certain RFID sensing label in numerous RFID sensing labels.
The beneficial effects of the utility model are: a kind of RFID sensing tag system for monitoring storing unit state that the utility model adopts, can realize the Real Time Monitoring to the storing unit storage configuration, and can automatically record correlation behavior information, under the state that does not have the sensing label receiver, also can normally use, and owing to adopted the magnetic strength sensor that the state of storing unit is detected, therefore RFID sensing label of the present utility model is reusable, not only very environmental protection, and can accomplish more like a cork Real Time Monitoring, use restriction of the present utility model is few, its range of application is very extensive, is applicable to various storage environment and various storing unit.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and example.
Fig. 1 is the installation site synoptic diagram of the utility model RFID sensing label.
Fig. 2 is the schematic block circuit diagram of the utility model RFID sensing label.
Fig. 3 is the system principle diagram of the utility model RFID sensing tag system.
Fig. 4 is the workflow diagram of the utility model RFID sensing tag system.
Embodiment
With reference to Fig. 1 and shown in Figure 3, a kind of RFID sensing tag system for monitoring storing unit state of the present utility model, comprise RFID sensing label 1, the sensing label receiver 2 for detection of storing unit 4 states and the computing machine 3 that RFID sensing label 1 is monitored, described RFID sensing label 1 be arranged on the storing unit 4 and with 2 wireless connections of sensing label receiver, sensing label receiver 2 and 3 wired or wireless connections of computing machine.
With reference to shown in Figure 2, described RFID sensing label 1 comprises the magnetic strength sensor 11 of knowing storing unit 4 storage configurations by detecting the magnetic field value power, be used for sending and/or receiving the radio frequency chip 12 of wireless signal, micro-control unit 13 reaches the power supply 14 that power supply is provided for circuit, described magnetic strength sensor 11 is connected with micro-control unit 13 by universal input/output interface, radio frequency chip 12 links to each other with micro-control unit 13 by Serial Peripheral Interface (SPI), micro-control unit 13 also is connected to be used to the crystal oscillating circuit 18 that clock information is provided, and the open position corresponding with magnetic strength sensor 11 is coated with magnetic material or embeds magnet on the described storing unit 4.
Above-mentioned storing unit 4 includes but not limited to the closed storing units 4 such as case, box, cabinet even room.
Described RFID sensing label 1 has increased by one group of magnetic strength sensor 11 at original RFID label, magnetic strength sensor 11 is known the storage configuration of storing unit 4 by the power that detects magnetic field, after RFID sensing label 1 is installed, storing unit 4 is in normal closed condition, magnetic material or magnet and magnetic strength sensor 11 form intrinsic distance and fixing magnetic field value, when storing unit 4 is opened, the distance of magnetic material or magnet and magnetic strength sensor 11 can be zoomed out simultaneously and cause magnetic strength sensor 11 detected magnetic field values to weaken, and RFID sensing label 1 infers by the magnetic field of detecting storing unit 4 whether storing unit 4 is illegally opened according to this principle; When magnetic field value is attenuated to certain threshold values, judge that namely RFID sensing label 1 residing storing unit 4 structures change or illegally opened, micro-control unit 13 records current event time of origin and status informations at this moment, and sends alerting signals by radio frequency chip 12 near sensing label receiver 2.
The information that receives from RFID sensing label 1 of sensing label receiver 2 on the one hand receives on the other hand from the steering order of computing machine 3 and sends to and specifies one or more RFID sensing labels 1.RFID sensing label 1 system software is installed in its Computer 3, and this application software receives all from storing unit 4 status informations of RFID sensing label 1 and shows in real time on administration interface and be saved in the database; Computing machine 3 passes through RFID sensing label 1 system software to RFID sensing label 1 sending controling instruction.Managerial personnel can be by RFID sensing label 1 system software Real Time Monitoring storing unit 4 state, and send instruction to a certain or some or all RFID sensing labels 1 by this software.
Installation embodiment with reference to RFID sensing label 1 shown in Figure 1, RFID sensing label 1 is placed and is fixed in the storing unit 4 of case or box etc., the open position 41 corresponding with magnetic strength sensor 11 is coated with magnetic material or embeds magnet on the described storing unit 4, after storing unit 4 closes, open position 41 correspondences that are coated with magnetic material or embedding magnet are blocked magnetic strength sensor 11, the magnetic field value that magnetic strength sensor 11 detects on the current locations.
Further, described RFID sensing label 1 also comprises the external memory storage 17 that detects data for store status, and described external memory storage 17 is connected with micro-control unit 13.External memory storage 17 is connected to the IIC interface of micro-control unit 13, and external memory storage 17 can record more detailed status information for increasing the storage volume of RFID sensing label 1.
Further, described RFID sensing label 1 comprises that also described light sensation sensor 15 is connected with micro-control unit 13 for the light sensation sensor 15 of knowing storing unit 4 storage configurations by detecting light intensity.Cooperate light sensation sensor 15 can further strengthen accuracy and the validity of RFID sensing label 1 state-detection.
Further, described RFID sensing label 1 also comprises the warming sensor 19 for detection of temperature, and described warming sensor 19 is connected with micro-control unit 13.Temperature by 19 pairs of storing unit 4 described positions of warming sensor detects and can obtain more comprehensively storage configuration information.
Further, described RFID sensing label 1 also comprises the wet propagated sensation sensor 10 for detection of humidity, and described wet propagated sensation sensor 10 is connected with micro-control unit 13.Humidity by wet 10 pairs of storing unit 4 described positions of propagated sensation sensor detects the more comprehensive storage configuration information that can obtain.
Described RFID sensing label 1 can also be realized storing unit 4 is done more many-sided monitoring in conjunction with other sensors.
Further, described RFID sensing label 1 also comprises button and the pilot lamp that operates for the user, and described button and pilot lamp link to each other with micro-control unit 13.Button and pilot lamp can carry out associative operation to RFID sensing label 1 for the staff, as opening, close RFID sensing label 1 etc.
Further, described RFID sensing label 1 also comprises the electric quantity detecting circuit 16 for detection of power supply 14 electric weight, and described electric quantity detecting circuit 16 links to each other with micro-control unit 13 with power supply 14 respectively.Can send to computing machine 3 the dump energy information of RFID sensing labels 1 by electric quantity detecting circuit 16RFID sensing label 1,
The information content that RFID sensing label 1 sends to computing machine 3 includes but not limited to tag number, time on date, testing result and power supply 14 states etc. of RFID sensing label 1, managerial personnel can be known learn situation that certain storing unit 4 occured illegally to open certain period and the electric weight of RFID sensing label 1 remainder.The instruction that computing machine 3 sends to RFID sensing label 1 detects, stops detection except general beginning and extracts RFID sensing label 1 label information, also includes but not limited to micro-control unit 13, the radio frequency chip 12 sleep instructions that arrange in order to lower RFID sensing label 1 power consumption and makes things convenient for managerial personnel to seek the searching instruction of certain RFID sensing label 1 in numerous RFID sensing labels 1.
With reference to shown in Figure 4, the workflow of RFID sensing label 1 system is as follows: managerial personnel are by computing machine 3 or manually opened RFID sensing label 1, and the micro-control unit 13 on the RFID sensing label 1, radio frequency chip 12 and pilot lamp etc. enter mode of operation.It is interior and storing unit 4 sealings are appropriate that RFID sensing label 1 is fixed on the storing unit 4 that is coated with magnetic material or embeds magnet, then send instruction by computing machine 3 and 2 pairs of RFID sensing labels of sensing label receiver 1, this instruction include but not limited to remove sensing label receiver 2 historical record, close pilot lamp, open magnetic strength sensor 11, indication micro-control unit 13 and radio frequency chip 12 enter sleep state and set return time of micro-control unit 13 and radio frequency chip 12.
After carrying out dependent instruction, RFID sensing label 1 enters sleep state but magnetic strength sensor 11 still can detect the magnetic field value of storing unit 4 in real time, when field weakening arrives certain threshold values, magnetic strength sensor 11 can wake micro-control unit 13 and the radio frequency chip 12 that is in sleep up, and micro-control unit 13 and radio frequency chip 12 switch to mode of operation from sleep state automatically.Micro-control unit 13 can record information and the current event time of origin illegally opened and deposit in the external storage, 12 of radio frequency chips send warning message and relative recording simultaneously, when environment of living in has sensing label receiver 2, just can receive in real time warning message and be presented on the operation interface of computing machine 3, when without sensing label receiver 2, RFID sensing label 1 can be waited for when having detected sensing label receiver 2 and all records initiatively being sent again.After micro-control unit 13 and radio frequency chip 12 are finished this time and illegally opened the processing of accident, can be automatically be transformed into sleep state until magnetic strength sensor 11 detects storing unit 4 is again illegally opened accident or reach the return time that presets micro-control unit 13 and radio frequency chip 12 from mode of operation.
The utility model utilize system that RFID sensing label 1, sensing label receiver 2 and computing machine 3 form again in conjunction with RFID sensing label 1 mounting means as shown in Figure 2 realizing the real-time detection to storing unit 4, thereby realize the detection to the safety of goods state in the middle of being placed on.
The above is preferred embodiment of the present utility model, and the utility model is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection domain of the present utility model.