CN202306611U - Active radio frequency identification (RFID) label and active RFID system for asset management - Google Patents
Active radio frequency identification (RFID) label and active RFID system for asset management Download PDFInfo
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- CN202306611U CN202306611U CN2011203457932U CN201120345793U CN202306611U CN 202306611 U CN202306611 U CN 202306611U CN 2011203457932 U CN2011203457932 U CN 2011203457932U CN 201120345793 U CN201120345793 U CN 201120345793U CN 202306611 U CN202306611 U CN 202306611U
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- 238000001514 detection method Methods 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 5
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 abstract 4
- 230000005059 dormancy Effects 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 5
- 230000002618 waking effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an active radio frequency identification (RFID) label and an active RFID system for asset management. The label comprises a casing, a microprocessor, a radio frequency transceiver, a printed circuit board (PCB) radio frequency antenna, a magnetism detection device and a power supply module, wherein the microprocessor, the radio frequency transceiver, the PCB radio frequency antenna, the magnetism detection device and the power supply module are arranged in the casing, the microprocessor is respectively connected with the radio frequency transceiver and the magnetism detection device, the radio frequency transceiver is connected with the PCB radio frequency antenna, the bottom surface of the casing is used for being pasted on assets to be managed, the bottom surface is provided with a groove, a magnet is arranged in the groove, and the magnetism detection device gives out trigging signals when detecting that the magnet is removed. The active RFID label and the active RFID system can be applied to asset management, and the real-time warning can be realized when the label attached on the assets is removed, so the asset management safety is improved.
Description
Technical field
The utility model relates to the REID field, relates in particular to a kind of active RFID tag and system that is used for asset management.
Background technology
RFID (Radio Frequency IDentification; Radio frequency identification) is a kind of contactless automatic identification technology; Its ultimate principle is a characteristic of utilizing radiofrequency signal and space thereof to be coupled, to transmit, realizes the automatic identification to static or mobile object.Rfid system is applied to asset management, can be fast, accurately, recognition objective object reliably, realize the real-time asset management of remote automation.
The active RFID system that is used for asset management generally partly is made up of label, reader and computer system etc.; Label attached on the assets that will manage; Realize that through coupling element the space of radiofrequency signal is coupled, and carries out the transmission of data between label and the reader.Use label as asset management, need respond inquiry at short notice, and can be moved or adhesive label is reported reader when being removed immediately in the assets of being managed from reader.
At present,, obtain to be waken up behind the wake-up signal, send label information to reader immediately based on driver, carrier sense, dual waking up or the label of hardware arouse machine processed.If label does not have wake-up signal will not send any information, thereby energy consumption is saved in the invalid transmission of minimizing label.But; Above-mentioned mechanism is just waken label up through specific signal; Trigger label and send information,, just realized making an inventory and inquiring about of assets for asset management application to reader; Can not instant alarming when the label that adheres to when assets is removed or moves, thus can't realize the unauthorized mobile monitor and the illegal replacement monitoring of assets.
Summary of the invention
The utility model embodiment proposes a kind of active RFID tag and system that is used for asset management, can instant alarming when adhesive label is removed on the assets, thus improve the security of asset management.
The active RFID tag that is used for asset management that the utility model embodiment provides comprises housing, and is arranged on microprocessor, RF transceiver, PCB radio-frequency antenna, magnetic detection device and power module in the housing;
Said microprocessor is connected with said RF transceiver, magnetic detection device respectively, and said RF transceiver is connected with said PCB radio-frequency antenna;
The bottom surface of said housing be used to be attached to the assets that will manage; Said bottom surface offers groove, is placed with magnet in the groove; When said magnetic detection device detects said magnet and is removed, send trigger pip.
Correspondingly, the utility model embodiment also provides a kind of system that is used for asset management, comprises label and reader;
Said label comprises housing, and is arranged on microprocessor, RF transceiver, PCB radio-frequency antenna, magnetic detection device and power module in the housing; Said microprocessor is connected with said RF transceiver, magnetic detection device respectively, and said RF transceiver is connected with said PCB radio-frequency antenna;
The bottom surface of said housing be used to be attached to the assets that will manage; Said bottom surface offers groove, is placed with magnet in the groove; When said magnetic detection device detects said magnet and is removed, send trigger pip;
Said reader comprises second microprocessor, two-way RF transceiver and external omnidirectional antenna at least; After said label detects the frequency F1 from said reader through timing wake-up mechanism, send label information or warning message to said reader through frequency F3.
Further, said magnetic detection device comprises tongue tube; The two ends of said tongue tube are connected with two I/O mouths of said microprocessor respectively.
Said label also comprises the signal strength detection module, is used to detect the intensity of received radiofrequency signal from reader; Said signal strength detection module is connected with said microprocessor; When said microprocessor judges that the Strength Changes value of received radiofrequency signal surpasses threshold value, trigger RF transceiver and send warning message to said reader.
The utlity model has following beneficial effect:
The bottom surface of label be used to be attached to the assets that will manage, on this bottom surface with magnet; When label when assets are removed, magnet separates with the label bottom surface, label sends warning message to reader immediately; And label is judged when label moves and is sent warning message to reader immediately through detecting the intensity from the radiofrequency signal of reader received; Thereby realize the unauthorized mobile monitor and the illegal replacement monitoring of assets, improve the security of asset management.
Description of drawings
Fig. 1 is the circuit module figure of the label that provides of the utility model embodiment one;
Fig. 2 is the structural representation of the label that provides of the utility model embodiment two;
Fig. 3 is the circuit module figure of the reader that provides of the utility model embodiment three;
Fig. 4 is the workflow diagram of the reader that provides of the utility model embodiment four;
Fig. 5 is the workflow diagram of the label that provides of the utility model embodiment five.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment will be carried out clear, intactly description.
Referring to Fig. 1, be the circuit module figure of the label that provides of the utility model embodiment one.
The label that present embodiment provides comprises housing, and is arranged on microprocessor 11, RF transceiver 12, PCB radio-frequency antenna 13, magnetic detection device 14 and power module 15 in the housing.Wherein, microprocessor 11 is connected with RF transceiver 12, magnetic detection device 14 respectively, and RF transceiver 12 is connected with PCB omnidirectional antenna 13.
Referring to Fig. 2, be the structural representation of the label that provides of the utility model embodiment two.
The bottom surface 10 of housing be used to be attached to the assets that will manage; Bottom surface 10 offers groove 101, is placed with magnet in the groove 101.When the inner magnetic detection device 14 of label detects said magnet and is removed, send trigger pip.
Preferably, magnetic detection device 14 comprises tongue tube; The two ends of tongue tube are connected with two I/O mouths of microprocessor 11 respectively.Tongue tube can be normally closed also can be often to open; The tongue tube two ends are connected respectively to 2 input/output ports (I/O mouth) of microprocessor; Level when one of them input port is low from hypermutation, perhaps becomes when high from low, shows that tongue tube detects magnetic field and occurs or disappear.
The shell of label is a plastic casing, and the groove 101 on the bottom surface is that a diameter is that 3 millimeters, the degree of depth are 1 millimeter cylindrical hole, and magnet is cylindrical magnetic iron.When label is attached on the assets, be that 3 millimeters, the degree of depth are the cylindrical hole that 1 millimeter cylindrical magnetic iron is put into the bottom surface with diameter.When label when assets are removed, can cause magnet from cylindrical hole, to drop out.In case magnet separates with the label bottom surface, magnetic field disappears, and magnetic detection device 14 sends trigger pip, triggers RF transceiver 12 and sends warning message to reader.And, after label is removed, as long as magnet is put back in the groove of bottom surface, with regard to reusable label.
One preferred embodiment in, as shown in Figure 1, the label that present embodiment provides also comprises signal strength detection module 16, is used to detect the intensity of received radiofrequency signal from reader; This signal strength detection module 16 is connected with microprocessor 11.When microprocessor 11 judges that the Strength Changes value of received radiofrequency signal surpasses threshold value, trigger RF transceiver 12 and send warning message to reader.
Label judges through detecting the Strength Changes of received radiofrequency signal whether label is moved, and when being moved, reports to the police immediately, thereby realizes the unauthorized mobile monitor and the illegal replacement monitoring of assets, improves the security of asset management.
Further, the power module of label adopts the lithium-manganese cell power supply.As shown in Figure 1, the label that present embodiment provides also comprises the under-voltage detection module 17 of battery, and this battery is under-voltage, and detection module 17 is connected with power module 15, microprocessor 11 respectively.During practical implementation, microprocessor 11 detects cell voltage through the under-voltage detection module 17 of battery, when microprocessor 11 judges that battery is under-voltage, triggers RF transceiver 12 and sends warning message to reader.
The label that present embodiment provides has the warning function of dismounting and mobile alarm function, and this label can cooperate reader to use, and forms rfid system, is applied to asset management.
Correspondingly, the utility model embodiment also provides a kind of rfid system, comprises label and reader.
The foregoing description one, embodiment two describe in detail the structure of label, repeat no more at this.
Referring to Fig. 3, be the circuit module figure of the reader that provides of the utility model embodiment three.
The reader that present embodiment provides comprises: second microprocessor 21, two-way RF transceiver (first via RF transceiver 22 as shown in Figure 3 and the second road RF transceiver 23), external omnidirectional antenna and second source module 26 at least.Wherein, second microprocessor 21 is connected with first via RF transceiver 22, the second road RF transceiver 23 respectively, and first via RF transceiver 22 is connected with external omnidirectional antenna 24, and the second road RF transceiver 23 is connected with external omnidirectional antenna 25.
In addition, the reader that provides of present embodiment also comprises the data transmission interface 27 that is used to transmit data; Data transmission interface 27 is connected with second microprocessor 21.Preferably, data transmission interface 27 is USB interface or RS232/485 interface.During practical implementation, after reader passes through data transmission interface 27 and outside computing machine is connected, can transmit data with computing machine.When data transmission interface 27 adopted USB interface, reader can also obtain working power from computing machine through the USB passage.
During practical implementation, after label detects the frequency F1 from reader through timing wake-up mechanism, send label information or warning message to reader through frequency F3.
Below in conjunction with Fig. 4 and Fig. 5, the principle of work of the system that is used for asset management that present embodiment is provided is described in detail.
Reader comprises the first via RF transceiver and the second road RF transceiver.Wherein, the first via RF transceiver of reader is used to send expression reader frequency F1 that exists and the frequency F2 that is used for inquiry tag, and two different frequencies can adopt fixed form to send, and also can adopt at a slow speed the frequency hopping mode to send.Behind the reader power-up initializing, first via RF transceiver uses frequency F1 to continue to send the broadcast message that the expression reader exists.In a single day reader receives the inquiry tag instruction that host computer (for example, this host computer is a computer system) sends, and first via RF transceiver just uses frequency F2 to send inquiry broadcasting; The sending duration of this inquiry broadcasting is greater than 2 times of the label dormancy period, to guarantee that label can receive frequency F2.And the second road RF transceiver uses frequency F3, is used to accept the information from label, and returns confirmation to label.
After reader powers on; Continue to send the frequency F1 that the expression reader exists through first via RF transceiver; The second road RF transceiver uses frequency F3 to continue to accept the information from label, if receive label information, uses frequency F3 to send confirmation to label immediately.
Behind the label power-up initializing, detect frequency F1 immediately, obtain the signal intensity R of frequency F1, and write the label data buffer area from reader.Wherein, signal intensity R uses 1 byte representation, and buffer zone is the circle queue of 16 bytes.Label is closed RF transceiver, closes main processor clock, starts low-frequency clock driving timing device and gets into dormant state, and this moment, label was in low power consumpting state.Label dormancy T1 after second (T1 got 4 seconds usually in the practical implementation case) waken up by timer, detect frequency F1 once more, and then dormancy, intercept again, so repeat.The label of present embodiment adopts timing wake-up mechanism detecting reader, can reduce the invalid transmission of label, saves energy consumption.
Label is analyzed the signal intensity R that collects frequency F1 before getting into dormancy.If R exceeds the signal receiving sensitivity (in the practical implementation case, setting 150 usually) of label, that is to say and work as signal intensity R that show that then reader does not exist, perhaps reader is sending the searching label broadcast message greater than 150.More concrete, if label in the preceding existence that does not detect reader when once waking up, and this does not detect the existence of reader when waking up yet, confirms that then reader does not exist.If label is at the preceding reader that detects when once waking up, and this does not detect the existence of reader when waking up, and then label switches to frequency F2 immediately, uses frequency F2 detecting reader.If label detects the signal intensity of frequency F2 less than 150, show that reader is being initiated the searching label order this moment, label switches to frequency F3 once more, sends information with frequency F3.Wherein, the information of said label transmission can be each in tag serial number, tag state information and the warning message.
Referring to Fig. 4, be the workflow diagram of the reader that provides of the utility model embodiment four.The workflow of reader is following:
S101, reader initialization;
S102, startup first via RF transceiver continue to send broadcast message with frequency F1, exist with the expression reader;
S103, startup the second road RF transceiver continue to receive label information with frequency F3;
S104, judge whether to receive the query statement of host computer, if then carry out S109, otherwise carry out S105; Wherein, host computer can be the computer system that is connected with reader;
S105, judge whether the second road RF transceiver receives label information, if then carry out S106, otherwise return S104;
S106, startup the second road RF transceiver, F3 returns confirmation to label with frequency;
S107, start the second road RF transceiver once more, continue to receive label information with frequency F3;
S108, to host computer forwarding label information; Return S104;
S109, first via RF transceiver stop to send broadcast message with frequency F1;
S110, startup first via RF transceiver continue to send Query Information with frequency F2;
S111, start first via RF transceiver once more, continue to send broadcast message with frequency F1; Return S104.
Referring to Fig. 5, be the workflow diagram of the label that provides of the utility model embodiment five.The workflow of label is following:
S201, the label initialization;
S202, detecting is obtained the signal intensity R of frequency F1 from the frequency F1 of reader;
S203 judges that whether signal intensity R is less than R0; If then carry out S205, otherwise carry out S204; Wherein, R0 is the signal receiving sensitivity upper limit of label;
S204 closes RF transceiver, closes main processor clock, starts low-frequency clock driving timing device and gets into dormancy, and this moment, label was in low power consumpting state;
S205, R writes buffer zone with signal intensity;
S206 judges that whether cell voltage is less than U0; If then carry out S207, otherwise carry out S208;
Wherein, U0 is pre-configured battery undervoltage warning threshold value.Label detects cell voltage through built-in under-voltage detection module, when cell voltage is lower than U0, starts alarm flow;
S207, under-voltage flag set;
Concrete, present embodiment adopts zone bit record tag state; Said zone bit comprises under-voltage sign, removes sign and moves sign;
S208 judges whether the external magnetic field disappears; If then carry out S209, otherwise carry out S210;
S209 removes flag set;
Concrete, when label when assets are removed, magnet separates with label, magnetic field disappears; Label will be removed flag set (for example putting 1) after detecting the external magnetic field disappearance through built-in detector for magnetic field, start alarm flow;
S210 judges whether label moves; If then carry out S211, otherwise carry out S212;
S211 moves flag set;
Concrete, when not having relative displacement between label and the reader, the intensity from the radiofrequency signal of reader that label obtains is constant basically, perhaps change very little, otherwise change in signal strength is big.Through the signal strength data in the 16 byte buffer queues in the label is analyzed, promptly whether the decidable label is moved.For example,, judge that then label is moved, will move flag set (for example putting 1) if the signal strength values that arrives of current detection surpasses A1 with the difference of detected signal intensity mean value before.In addition, before label writes buffer zone with signal intensity, also carry out filter analyses, reject undesired signal.Filtering has utilized the not mutated but principle of gradual change of signal, surpasses A2 if find the signal strength difference of adjacent twice detection, then shows to disturb to occur, and needs to start once more.Wherein, A1, A2 can dispose according to actual needs;
S212, whether the judgement symbol position does not have set; If then carry out S214, otherwise carry out S213;
S213 starts on the label and send task; Label sends warning message to reading, and carries out S214 then;
S214 closes RF transceiver, closes main processor clock, starts low-frequency clock driving timing device and gets into dormancy;
S215, detecting is obtained the signal intensity R of frequency F1 from the frequency F1 of reader;
S216 judges that whether signal intensity R is less than R0; If then return S205, otherwise carry out S217;
S217, detecting is obtained the signal intensity R ＇ of frequency F2 from the frequency F2 of reader;
S218 judges that whether signal intensity R ＇ is less than R0; If then carry out S219, otherwise return S201;
S219, the inquiry tag position;
S220 starts on the label and send task, sends label information to reader, returns S214 then.
Concrete, when label sends information to reader, can directly send, also can adopt the mode of carrier sense collision detection to send.After information was sent and finished, label switched to accepting state immediately, waited for that reader returns confirmation, continued to obtain the signal intensity R1 of frequency F3 in the process of wait simultaneously; If the stand-by period is not also received the affirmation information that reader returns after surpassing T ＇, then label is closed RF transceiver, closes main processor clock; Set low-frequency clock timer timing; Label gets into dormant state, and the value of timing is 500us * (R1) mod (64), because R1 has very strong randomness when clashing; The method is simply effective, and the possibility that clashes after making label wake up once more is less.After timing arrived, label was waken up, detected the affirmation information that reader returns once more.With this triplicate, if label still can't be received the affirmation information from reader, then label sends three secondary label information continuously to reader, does not wait for that afterwards reader returns confirmation, and gets into dormant state.
Active RFID tag that is used for asset management and system that the utility model embodiment provides, the bottom surface of label be used to be attached to the assets that will manage, on this bottom surface with magnet; When label when assets are removed, magnet separates with the label bottom surface, label sends warning message to reader immediately; And label is judged when label moves and is sent warning message to reader immediately through detecting the intensity from the radiofrequency signal of reader received; Thereby realize the unauthorized mobile monitor and the illegal replacement monitoring of assets, improve the security of asset management.In addition, after label is removed,,, can not cause the waste of resource with regard to reusable label as long as magnet is put back in the groove of bottom surface again.
The above is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also are regarded as the protection domain of the utility model.
Claims (10)
1. an active RFID tag that is used for asset management is characterized in that, comprises housing, and is arranged on microprocessor, RF transceiver, PCB radio-frequency antenna, magnetic detection device and power module in the housing;
Said microprocessor is connected with said RF transceiver, magnetic detection device respectively, and said RF transceiver is connected with said PCB radio-frequency antenna;
The bottom surface of said housing be used to be attached to the assets that will manage; Said bottom surface offers groove, is placed with magnet in the groove; When said magnetic detection device detects said magnet and is removed, send trigger pip.
2. the active RFID tag that is used for asset management as claimed in claim 1 is characterized in that said magnetic detection device comprises tongue tube; The two ends of said tongue tube are connected with two I/O mouths of said microprocessor respectively.
3. the active RFID tag that is used for asset management as claimed in claim 2 is characterized in that said label also comprises the signal strength detection module, is used to detect the intensity of received radiofrequency signal from reader;
Said signal strength detection module is connected with said microprocessor.
4. the active RFID tag that is used for asset management as claimed in claim 3 is characterized in that, said power module adopts the lithium-manganese cell power supply; Said label also comprises the under-voltage detection module of battery, and the under-voltage detection module of said battery is connected with said power module, microprocessor respectively.
5. like each described active RFID tag that is used for asset management of claim 1 ~ 4, said groove is that diameter is that 3 millimeters, the degree of depth are 1 millimeter cylindrical hole; Said magnet is columnar magnet.
6. a system that is used for asset management is characterized in that, comprises label and reader;
Said label comprises housing, and is arranged on microprocessor, RF transceiver, PCB radio-frequency antenna, magnetic detection device and power module in the housing; Said microprocessor is connected with said RF transceiver, magnetic detection device respectively, and said RF transceiver is connected with said PCB radio-frequency antenna;
The bottom surface of said housing be used to be attached to the assets that will manage; Said bottom surface offers groove, is placed with magnet in the groove; When said magnetic detection device detects said magnet and is removed, send trigger pip;
Said reader comprises second microprocessor, two-way RF transceiver and external omnidirectional antenna at least; After said label detects the frequency F1 from said reader through timing wake-up mechanism, send label information or warning message to said reader through frequency F3.
7. the system that is used for asset management as claimed in claim 6 is characterized in that said magnetic detection device comprises tongue tube; The two ends of said tongue tube are connected with two I/O mouths of said microprocessor respectively.
8. the system that is used for asset management as claimed in claim 7 is characterized in that said label also comprises the signal strength detection module, is used to detect the intensity of received radiofrequency signal from reader;
Said signal strength detection module is connected with said microprocessor; When said microprocessor judges that the Strength Changes value of received radiofrequency signal surpasses threshold value, trigger RF transceiver and send warning message to said reader.
9. the system that is used for asset management as claimed in claim 8 is characterized in that, said power module adopts the lithium-manganese cell power supply; Said label also comprises the under-voltage detection module of battery, and the under-voltage detection module of said battery is connected with said power module, microprocessor respectively; When said microprocessor judges that battery is under-voltage, trigger RF transceiver and send warning message to said reader.
10. like each described system that is used for asset management of claim 6 ~ 9, it is characterized in that said reader also comprises direct supply interface, data transmission interface and data-carrier store; Said data transmission interface is USB interface or RS232/485 interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203457932U CN202306611U (en) | 2011-09-15 | 2011-09-15 | Active radio frequency identification (RFID) label and active RFID system for asset management |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203457932U CN202306611U (en) | 2011-09-15 | 2011-09-15 | Active radio frequency identification (RFID) label and active RFID system for asset management |
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| CN202306611U true CN202306611U (en) | 2012-07-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108388936A (en) * | 2018-04-28 | 2018-08-10 | 南通国信软件技术有限公司 | Intelligent numerical digit IT asset managements label and the intelligence numerical digit IT asset management systems |
| CN108627180A (en) * | 2017-03-23 | 2018-10-09 | 南宁富桂精密工业有限公司 | Passive sensor arrangement |
| CN109229714A (en) * | 2018-08-10 | 2019-01-18 | 四川广聚其力电子科技有限公司 | A kind of construction project intelligence mark is feeding with feeding test block management supporter |
| WO2021000274A1 (en) * | 2019-07-03 | 2021-01-07 | 深圳市中联创新自控系统有限公司 | Communication control method and circuit, and asset management system |
| CN113362551A (en) * | 2021-06-04 | 2021-09-07 | 西安优势物联网科技有限公司 | Intelligent perimeter warning device and virtual perimeter security system implementation method |
-
2011
- 2011-09-15 CN CN2011203457932U patent/CN202306611U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627180A (en) * | 2017-03-23 | 2018-10-09 | 南宁富桂精密工业有限公司 | Passive sensor arrangement |
| CN108388936A (en) * | 2018-04-28 | 2018-08-10 | 南通国信软件技术有限公司 | Intelligent numerical digit IT asset managements label and the intelligence numerical digit IT asset management systems |
| CN109229714A (en) * | 2018-08-10 | 2019-01-18 | 四川广聚其力电子科技有限公司 | A kind of construction project intelligence mark is feeding with feeding test block management supporter |
| WO2021000274A1 (en) * | 2019-07-03 | 2021-01-07 | 深圳市中联创新自控系统有限公司 | Communication control method and circuit, and asset management system |
| CN113362551A (en) * | 2021-06-04 | 2021-09-07 | 西安优势物联网科技有限公司 | Intelligent perimeter warning device and virtual perimeter security system implementation method |
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| C14 | Grant of patent or utility model | ||
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Owner name: GUANGDONG REAP INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WEI ZHONGHAI Effective date: 20130417 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 510655 GUANGZHOU, GUANGDONG PROVINCE TO: 510620 GUANGZHOU, GUANGDONG PROVINCE |
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Effective date of registration: 20130417 Address after: Tianhe Road 510620 Guangdong city of Guangzhou province Tianhe District No. 228 building 901 Patentee after: Guangdong Ruipu Mdt InfoTech Ltd Address before: 510655, room 505, Weicheng Plaza, No. 205, Whampoa Road, Tianhe District, Guangdong, Guangzhou Patentee before: Wei Zhonghai |
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Address after: 810, room 228, No. 510620 Tianhe Road, Tianhe District, Guangdong, Guangzhou, China Patentee after: Guangdong Ruipu Polytron Technologies Inc Address before: Tianhe Road 510620 Guangdong city of Guangzhou province Tianhe District No. 228 building 901 Patentee before: Guangdong Ruipu Mdt InfoTech Ltd |
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Granted publication date: 20120704 |
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