CN210324505U - Loss of contact warning system based on RFID - Google Patents
Loss of contact warning system based on RFID Download PDFInfo
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- CN210324505U CN210324505U CN201921599384.8U CN201921599384U CN210324505U CN 210324505 U CN210324505 U CN 210324505U CN 201921599384 U CN201921599384 U CN 201921599384U CN 210324505 U CN210324505 U CN 210324505U
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Abstract
The utility model discloses an offline reminding system based on RFID, which comprises a host device and a slave device; the host equipment comprises a host strip-shaped shell, a wearing wrist strap, a host acousto-optic alarm and a host RFID radio frequency antenna; the slave equipment comprises a slave bar-shaped shell, a wearing waistband, a slave audible and visual alarm and a slave RFID radio frequency antenna. The system for reminding the loss of the connection utilizes the vibration motor module to carry out vibration reminding when the connection is lost, so that a guardian can completely perceive the system in a noisy environment; the host controller, the host RFID radio frequency module, the host RFID radio frequency antenna, the slave RFID radio frequency module and the slave controller form a wireless communication circuit structure which is communicated with each other, and no substantial stay cord connection exists among the wireless communication circuit structure, so that the use is not influenced even if people are in many cases; the slave device is worn on the waist belt, so that the use of the arms of the child is not affected.
Description
Technical Field
The utility model relates to a low-power consumption radio frequency identification technology, especially a system is reminded to losing allies oneself with based on RFID.
Background
In daily life, people often take children to go out for playing, and the children are most hopeless to be lost. The common anti-loss tool is that a guardian and a child both wear a arm sleeve, and an elastic pull rope or a retractable pull rope is connected between the two arm sleeves. However, the use of the arm is easily affected in the using process, so that the use is inconvenient, the using distance is limited, and the pedestrian is easily blocked under the condition of many people. Therefore, it is necessary to design an RFID-based offline reminding system, which can form wireless and distant communication between a guardian and a child, and can issue a warning after losing communication contact beyond a communication range to remind the guardian of the whereabouts of the child.
Disclosure of Invention
Utility model purpose: the RFID-based offline reminding system can form wireless distant communication between a guardian and a child, and send out a warning after communication contact is lost beyond a communication range to remind the guardian to pay attention to the whereabouts of the child.
The technical scheme is as follows: the utility model discloses an unlink reminding system based on RFID, including host computer equipment and slave computer equipment;
the host equipment comprises a host strip-shaped shell, a wearing wrist strap, a host acousto-optic alarm and a host RFID radio frequency antenna; a host power supply module, a host controller, a host memory, a host RFID radio frequency module and a host vibration driving circuit are arranged in the host strip-shaped shell; the host RFID radio frequency antenna and the host audible and visual alarm are both arranged on the outer side surface of the host strip-shaped shell; the wearing wrist strap is arranged on the host machine strip-shaped shell and is used for binding and wearing the host machine strip-shaped shell; a vibration motor module is arranged on the wearing side of the strip-shaped shell of the host machine; the host controller is respectively and electrically connected with the host RFID radio frequency module, the host memory, the host audible and visual alarm and the host vibration driving circuit; the host RFID radio frequency module is electrically connected with the host RFID radio frequency antenna and used for receiving and transmitting radio frequency signals; the host vibration driving circuit is electrically connected with the vibration motor module and is used for driving the vibration motor module to vibrate; the host power supply module is used for supplying power to the host controller, the host RFID radio frequency module, the host memory, the host audible and visual alarm and the host vibration driving circuit respectively;
the slave equipment comprises a slave strip-shaped shell, a wearing waistband, a slave audible and visual alarm and a slave RFID radio frequency antenna; the wearing waistband is arranged on the slave strip-shaped shell and is used for binding and wearing the slave strip-shaped shell; the slave audible and visual alarm and the slave RFID radio frequency antenna are arranged on the outer side surface of the slave bar-shaped shell; a slave power supply module, a slave controller, a slave memory and a slave RFID radio frequency module are arranged in the slave bar-shaped shell; the slave machine controller is respectively and electrically connected with the slave machine memory, the slave machine RFID radio frequency module and the slave machine audible and visual alarm; the slave RFID radio frequency module is electrically connected with the slave RFID radio frequency antenna and used for receiving and transmitting radio frequency signals; and the slave power supply module is used for respectively supplying power to the slave controller, the slave memory, the slave RFID radio frequency module and the slave audible and visual alarm.
Further, the vibration motor module comprises an insertion pipe, a sleeve, a pressure spring and a disc-shaped end head; a circular groove is formed in the middle of the wearing side face of the host strip-shaped shell; a vibration motor is arranged in the disc-shaped end head, and a host vibration driving circuit is electrically connected with the vibration motor; the insertion pipe is fixedly arranged at the center of the bottom of the circular groove, and the sleeve is sleeved on the insertion pipe; the disc-shaped end is partially embedded into the circular groove, and the sleeve is fixedly arranged at the center of the inner side surface of the disc-shaped end; the pressure spring is sleeved on the insertion pipe and the sleeve, and two ends of the pressure spring are respectively fixed on the bottom of the circular groove and the inner side surface of the disc-shaped end; the outer side surface of the disc-shaped end is provided with an arc surface, and a rubber cushion layer is arranged on the arc surface.
Furthermore, a strip-shaped guide hole is axially formed in the wall of the sleeve, and a guide convex column which is slidably embedded into the strip-shaped guide hole is formed in the wall of the insertion tube.
Furthermore, a control chamber and a power supply chamber are respectively arranged in the strip-shaped shell of the host machine and positioned at the left side and the right side of the circular groove; the host controller, the host memory, the host RFID radio frequency module and the host vibration driving circuit are all arranged in the control cavity, and the host power supply module is arranged in the power supply cavity; a threading hole for communicating the control chamber, the power supply chamber and the circular groove is formed in the shell wall of the host strip-shaped shell; the electric connecting line of the vibration motor and the host vibration driving circuit sequentially enters the disc-shaped end head through the threading hole, the insertion tube and the sleeve.
Further, the wearing wristband includes a rubber short band and a rubber long band; a strip-shaped groove is formed in each of the left end and the right end of the wearing side of the strip-shaped shell of the host; one end of the short rubber belt and one end of the long rubber belt are respectively hinged and arranged in the left strip-shaped groove and the right strip-shaped groove; the rubber long belt is provided with clamping holes at intervals; the other end of the rubber short belt is provided with a pin buckle, and the middle part of the rubber short belt is provided with a belt hoop.
Further, an arc-shaped concave surface is arranged on the wearing side surface of the slave strip-shaped shell, and a sponge cushion layer is arranged on the arc-shaped concave surface.
Further, the wearable waistband comprises two rubber fixing belts and an elastic telescopic belt; two rubber fixing belts are respectively fixed on the left end surface and the right end surface of the slave strip-shaped shell; the end part of one rubber fixing band is provided with a rectangular ring buckle, and the elastic telescopic band is connected with the end part of the other rubber fixing band; the tail end of the elastic telescopic belt is provided with a hook face magic tape, and the middle part of the elastic telescopic belt is provided with a hair face magic tape matched with the hook face magic tape.
Compared with the prior art, the utility model, its beneficial effect is: the vibration motor module can be used for carrying out vibration reminding when the connection is lost, so that a guardian can completely perceive the vibration reminding in a noisy environment; the host controller, the host RFID radio frequency module, the host RFID radio frequency antenna, the slave RFID radio frequency module and the slave controller form a wireless communication circuit structure which is communicated with each other, and no substantial stay cord connection exists among the wireless communication circuit structure, so that the use is not influenced even if people are in many cases; the slave equipment is worn on the user's body by using the wearing belt, so that the use of the arms of the child is not influenced; the master audible and visual alarm and the slave audible and visual alarm can remind both the master device and the slave device when the connection is lost, so that the bidirectional quick searching is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a host device of the present invention;
fig. 2 is a schematic structural diagram of the slave device of the present invention;
fig. 3 is a schematic view of a partial sectional structure of the host device of the present invention;
fig. 4 is a schematic diagram of the system circuit structure of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in fig. 1-4, the utility model discloses an lose and allie oneself with warning system based on RFID includes: a master device and a slave device;
the host equipment comprises a host strip-shaped shell 1, a wearing wrist strap, a host audible and visual alarm 3 and a host RFID radio frequency antenna 2; a host power supply module, a host controller, a host memory, a host RFID radio frequency module and a host vibration drive circuit are arranged in the host strip-shaped shell 1; the host RFID radio frequency antenna 2 and the host audible and visual alarm 3 are both arranged on the outer side surface of the host strip-shaped shell 1; the wearing wrist strap is arranged on the host machine bar-shaped shell 1 and is used for binding and wearing the host machine bar-shaped shell 1; a vibration motor module is arranged on the wearing side of the host strip-shaped shell 1; the host controller is respectively and electrically connected with the host RFID radio frequency module, the host memory, the host audible and visual alarm 3 and the host vibration driving circuit; the host RFID radio frequency module is electrically connected with the host RFID radio frequency antenna 2 and used for receiving and transmitting radio frequency signals; the host vibration driving circuit is electrically connected with the vibration motor module and is used for driving the vibration motor module to vibrate; the host power supply module is used for supplying power to the host controller, the host RFID radio frequency module, the host memory, the host audible and visual alarm 3 and the host vibration driving circuit respectively;
the slave equipment comprises a slave strip-shaped shell 21, a wearing waistband, a slave audible and visual alarm 23 and a slave RFID radio frequency antenna 24; the wearing waistband is arranged on the slave strip-shaped shell 21 and is used for binding and wearing the slave strip-shaped shell 21; the slave audible and visual alarm 23 and the slave RFID radio frequency antenna 24 are arranged on the outer side surface of the slave bar-shaped shell 21; a slave power supply module, a slave controller, a slave memory and a slave RFID radio frequency module are arranged in the slave bar-shaped shell 21; the slave controller is respectively electrically connected with the slave memory, the slave RFID radio frequency module and the slave audible and visual alarm 23; the slave RFID radio frequency module is electrically connected with the slave RFID radio frequency antenna 24 and used for receiving and transmitting radio frequency signals; and the slave power supply module is used for respectively supplying power to the slave controller, the slave memory, the slave RFID radio frequency module and the slave audible and visual alarm 23.
The vibration motor module can be used for carrying out vibration reminding when the connection is lost, so that a guardian can completely perceive the vibration reminding in a noisy environment; the host controller, the host RFID radio frequency module, the host RFID radio frequency antenna 2, the slave RFID radio frequency antenna 24, the slave RFID radio frequency module and the slave controller form a wireless communication circuit structure which is communicated with each other, and no substantial stay cord connection exists among the wireless communication circuit structure, so that the use is not influenced even if people are in many cases; the slave equipment is worn on the user's body by using the wearing belt, so that the use of the arms of the child is not influenced; the master audible and visual alarm 3 and the slave audible and visual alarm 23 can remind both the master device and the slave device when the connection is lost, so that the bidirectional quick searching is facilitated.
Further, the vibration motor module comprises an insertion tube 13, a sleeve 14, a pressure spring 17 and a disc-shaped end head 18; a circular groove 9 is formed in the middle of the wearing side face of the host strip-shaped shell 1; a vibration motor is arranged in the disc-shaped end head 18, and a host vibration driving circuit is electrically connected with the vibration motor; the insertion pipe 13 is fixedly arranged at the center of the bottom of the circular groove 9, and the sleeve 14 is sleeved on the insertion pipe 13; the disc-shaped end head 18 is partially embedded into the circular groove 9, and the sleeve 14 is fixedly arranged at the center of the inner side surface of the disc-shaped end head 18; the pressure spring 17 is sleeved on the insertion pipe 13 and the sleeve 14, and two ends of the pressure spring 17 are respectively fixed on the bottom of the circular groove 9 and the inner side surface of the disc-shaped end head 18; the outer side surface of the disc-shaped end head 18 is provided with an arc surface, and a rubber cushion layer 19 is arranged on the arc surface. The vibration motor module can be used for carrying out vibration reminding when the connection is lost, so that a guardian can completely perceive the vibration reminding in a noisy environment; the rubber cushion layer 19 can be attached to the arm of the guardian by the pressure spring 17, so that the vibration reminding can be reliably sensed.
Further, a strip-shaped guide hole 15 is axially formed in the wall of the sleeve 14, and a guide boss 16 slidably inserted into the strip-shaped guide hole 15 is formed in the wall of the insertion tube 13. Utilize bar guiding hole 15 and direction projection 16's cooperation, can carry on spacingly to intubate 13 flexible volume, prevent that disc end 18 from dropping.
Furthermore, a control chamber 10 and a power supply chamber 11 are respectively arranged in the host bar-shaped shell 1 and at the left side and the right side of the circular groove 9; the host controller, the host memory, the host RFID radio frequency module and the host vibration driving circuit are all arranged in the control chamber 10, and the host power supply module is arranged in the power supply chamber 11; a threading hole 12 which is communicated with the control chamber 10, the power supply chamber 11 and the circular groove 9 is arranged in the shell wall of the host strip-shaped shell 1; the electric connecting line of the vibration motor and the host vibration driving circuit enters the disc-shaped end head 18 through the threading hole 12, the insertion tube 13 and the sleeve 14 in sequence. The use of the threading hole 12, the insertion tube 13, and the sleeve 14 can facilitate the routing of the electrical connection wires of the vibration motor.
Further, the wearing wristband includes a short rubber band 4 and a long rubber band 5; a strip-shaped groove 20 is formed in each of the left end and the right end of the wearing side of the strip-shaped shell 1 of the host machine; one end of the short rubber belt 4 and one end of the long rubber belt 5 are respectively hinged and arranged in the left strip-shaped groove 20 and the right strip-shaped groove 20; the rubber long belt 5 is provided with fastener holes 7 at intervals; a pin buckle 6 is arranged at the other end of the rubber short belt 4, and a belt hoop 8 is arranged in the middle of the rubber short belt 4. The rubber short belt 4 and the rubber long belt 5 are installed using the strip-shaped groove 20 such that the hinge end portions are embedded in the strip-shaped groove 20, enhancing wearing comfort.
Further, the wearing side surface of the slave bar-shaped case 21 is provided with an arc-shaped concave surface, and a sponge cushion 22 is arranged on the arc-shaped concave surface. The comfort of wearing can be improved by using the sponge cushion 22.
Further, the wearable waistband comprises two rubber fixing bands 25 and an elastic telescopic band 27; two rubber fixing belts 25 are respectively fixed on the left end face and the right end face of the slave strip-shaped shell 21; a rectangular ring buckle 26 is arranged at the end part of one rubber fixing belt 25, and an elastic telescopic belt 27 is connected to the end part of the other rubber fixing belt 25; the tail end of the elastic expansion band 27 is provided with a hook surface magic tape 28, and the middle part of the elastic expansion band 27 is provided with a hair surface magic tape 29 matched with the hook surface magic tape 28. Hook face magic subsides 28 and hair side magic subsides 29 that set up on the elastic expansion band 27 can have better adaptability to length adjustment, satisfy child's waist ligature requirement.
In the system for reminding the loss of connection based on the RFID, the host controller and the slave controller are both composed of STC15W200S series single-chip microcomputers and peripheral circuits thereof; the host memory and the slave memory both adopt the existing memory chips and are used for storing RFID numbers; the master RFID radio frequency module and the slave RFID radio frequency module both adopt the existing RFID radio frequency chips and are respectively connected with the master RFID radio frequency antenna and the slave RFID radio frequency antenna to realize the transmission of RFID radio frequency signals; the master RFID radio frequency antenna and the slave RFID radio frequency antenna are both formed by radio frequency coils; the master audible and visual alarm 3 and the slave audible and visual alarm 23 both adopt the existing audible and visual alarms and are used for sending audible and visual alarm signals; the host vibration driving circuit adopts the existing motor driving circuit and is matched with a vibration motor of host equipment to realize vibration reminding; the host power supply module and the slave power supply module are both composed of lithium batteries and corresponding voltage stabilizing circuits, so that power supply of the host equipment and the slave equipment is realized; the vibration motor is an existing miniature vibration motor, such as a vibration motor commonly used in a mobile phone.
When the system is used, the host device is worn on the arm of a guardian through a wearing wrist strap, and the slave device is worn on the waist of a child through a wearing waistband; after the master device and the slave device are started, a communication circuit structure for mutual communication is formed by the master controller, the master RFID radio frequency module, the master RFID radio frequency antenna 2, the slave RFID radio frequency antenna 24, the slave RFID radio frequency module and the slave controller.
The slave controller periodically transmits data information with the RFID card number through the slave RFID radio frequency module and the slave RFID radio frequency antenna 24; the host controller receives data information with the RFID card number in real time through the host RFID radio frequency antenna 2 and the host RFID radio frequency module; after receiving the data information with the RFID card number, the host controller analyzes the data information to obtain the RFID card number, compares the RFID card number with the RFID card number stored in the host memory, judges that the slave equipment is still in a communication range if the comparison result is consistent, and feeds back confirmation information to the slave equipment through the host RFID radio frequency module and the host RFID radio frequency antenna 2; the slave controller enters a timing sleep state for 3 seconds after receiving the confirmation information through the slave RFID radio frequency module and the slave RFID radio frequency antenna 24; after the sleep awakening, the slave controller sends data information with the RFID card number through the slave RFID radio frequency module and the slave RFID radio frequency antenna 24 to enter the next round of communication; if the slave controller does not receive the confirmation information all the time, the host device keeps the awakening state, data information with the RFID card number is sent once every 1 second, and if the confirmation information is not received after 10 seconds, the slave controller controls the slave audible and visual alarm 23 to send out audible and visual alarm, so that a guardian can conveniently find the information.
If the host controller does not receive the data information with the RFID card number within a set time interval, for example, the set time interval is 10 seconds, it is determined that the slave device is not within the communication range, that is, it indicates that the slave device is disconnected from the host device; if the data information with the RFID card numbers received by the host controller at the set time interval (10 seconds) is analyzed to obtain that the RFID card numbers are not consistent with the RFID card numbers stored in the host memory, the slave device is judged to be out of the communication range in the same way, namely the slave device is indicated to be disconnected with the host device; after the slave equipment is confirmed to be disconnected, the host controller controls the host audible and visual alarm 3 to give out audible and visual alarm, so that a guardian can be reminded of disconnection, a child can find the guardian conveniently, and meanwhile, the host vibration driving circuit drives the vibration motor to work and vibrate, so that the guardian can sense completely in a noisy environment.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides an unlink warning system based on RFID which characterized in that: the system comprises a host device and a slave device;
the host equipment comprises a host strip-shaped shell (1), a wearing wrist strap, a host audible and visual alarm (3) and a host RFID radio frequency antenna (2); a host power supply module, a host controller, a host memory, a host RFID radio frequency module and a host vibration driving circuit are arranged in the host bar-shaped shell (1); the host RFID radio frequency antenna (2) and the host acousto-optic alarm (3) are both arranged on the outer side surface of the host strip-shaped shell (1); the wearing wrist strap is arranged on the host machine bar-shaped shell (1) and is used for binding and wearing the host machine bar-shaped shell (1); a vibration motor module is arranged on the wearing side of the host strip-shaped shell (1); the host controller is respectively and electrically connected with the host RFID radio frequency module, the host memory, the host audible and visual alarm (3) and the host vibration driving circuit; the host RFID radio frequency module is electrically connected with the host RFID radio frequency antenna (2) and is used for receiving and transmitting radio frequency signals; the host vibration driving circuit is electrically connected with the vibration motor module and is used for driving the vibration motor module to vibrate; the host power supply module is used for supplying power to the host controller, the host RFID radio frequency module, the host memory, the host audible and visual alarm (3) and the host vibration driving circuit respectively;
the slave equipment comprises a slave bar-shaped shell (21), a wearing waistband, a slave audible and visual alarm (23) and a slave RFID radio frequency antenna (24); the wearing waistband is arranged on the slave strip-shaped shell (21) and is used for binding and wearing the slave strip-shaped shell (21); the slave acousto-optic alarm (23) and the slave RFID radio frequency antenna (24) are arranged on the outer side surface of the slave bar-shaped shell (21); a slave power supply module, a slave controller, a slave memory and a slave RFID radio frequency module are arranged in the slave bar-shaped shell (21); the slave controller is respectively and electrically connected with the slave memory, the slave RFID radio frequency module and the slave audible and visual alarm (23); the slave RFID radio frequency module is electrically connected with the slave RFID radio frequency antenna (24) and is used for receiving and transmitting radio frequency signals; and the slave power supply module is used for respectively supplying power to the slave controller, the slave memory, the slave RFID radio frequency module and the slave audible and visual alarm (23).
2. The RFID-based missed alert system of claim 1, wherein: the vibration motor module comprises an insertion pipe (13), a sleeve (14), a pressure spring (17) and a disc-shaped end head (18); a circular groove (9) is arranged in the middle of the wearing side surface of the host strip-shaped shell (1); a vibration motor is arranged in the disc-shaped end head (18), and a host vibration driving circuit is electrically connected with the vibration motor; the insertion pipe (13) is fixedly arranged at the center of the bottom of the circular groove (9), and the sleeve (14) is sleeved on the insertion pipe (13); the disc-shaped end head (18) is partially embedded into the circular groove (9), and the sleeve (14) is fixedly arranged at the center of the inner side surface of the disc-shaped end head (18); the pressure spring (17) is sleeved on the insertion tube (13) and the sleeve (14), and two ends of the pressure spring (17) are respectively fixed on the bottom of the circular groove (9) and the inner side surface of the disc-shaped end (18); the outer side surface of the disc-shaped end head (18) is an arc surface, and a rubber cushion layer (19) is arranged on the arc surface.
3. The RFID-based missed alert system of claim 2, wherein: a strip-shaped guide hole (15) is axially arranged on the tube wall of the sleeve (14), and a guide convex column (16) which is slidably embedded into the strip-shaped guide hole (15) is arranged on the tube wall of the insertion tube (13).
4. The RFID-based missed alert system of claim 2, wherein: a control chamber (10) and a power supply chamber (11) are respectively arranged in the host bar-shaped shell (1) and positioned at the left side and the right side of the circular groove (9); the host controller, the host memory, the host RFID radio frequency module and the host vibration driving circuit are all arranged in the control chamber (10), and the host power supply module is arranged in the power supply chamber (11); a threading hole (12) communicated with the control chamber (10), the power supply chamber (11) and the circular groove (9) is arranged in the shell wall of the host strip-shaped shell (1); the electric connecting line of the vibration motor and the host vibration driving circuit sequentially enters the disc-shaped end head (18) through the threading hole (12), the insertion tube (13) and the sleeve (14).
5. The RFID-based missed alert system of claim 1, wherein: the wearing wrist strap comprises a short rubber belt (4) and a long rubber belt (5); a strip-shaped groove (20) is arranged at the left end and the right end of the wearing side of the host strip-shaped shell (1); one end of the short rubber belt (4) and one end of the long rubber belt (5) are respectively hinged and installed in the left strip-shaped groove (20) and the right strip-shaped groove (20); the rubber long belt (5) is provided with clamping holes (7) at intervals; a pin buckle (6) is arranged at the other end of the short rubber belt (4), and a belt hoop (8) is arranged in the middle of the short rubber belt (4).
6. The RFID-based missed alert system of claim 1, wherein: the wearing side surface of the slave strip-shaped shell (21) is an arc-shaped concave surface, and a sponge cushion layer (22) is arranged on the arc-shaped concave surface.
7. The RFID-based missed alert system of claim 1, wherein: the wearing waistband comprises two rubber fixing belts (25) and an elastic telescopic belt (27); two rubber fixing belts (25) are respectively fixed on the left end surface and the right end surface of the slave strip-shaped shell (21); a rectangular ring buckle (26) is arranged at the end part of one rubber fixing band (25), and an elastic telescopic band (27) is connected to the end part of the other rubber fixing band (25); the tail end of the elastic telescopic belt (27) is provided with a hook surface magic tape (28), and the middle part of the elastic telescopic belt (27) is provided with a hair surface magic tape (29) matched with the hook surface magic tape (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599384.8U CN210324505U (en) | 2019-09-25 | 2019-09-25 | Loss of contact warning system based on RFID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599384.8U CN210324505U (en) | 2019-09-25 | 2019-09-25 | Loss of contact warning system based on RFID |
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| Publication Number | Publication Date |
|---|---|
| CN210324505U true CN210324505U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921599384.8U Expired - Fee Related CN210324505U (en) | 2019-09-25 | 2019-09-25 | Loss of contact warning system based on RFID |
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| CN (1) | CN210324505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012393A (en) * | 2021-04-13 | 2021-06-22 | 南京孝德智能科技有限公司 | Old man is system of endowing at home |
-
2019
- 2019-09-25 CN CN201921599384.8U patent/CN210324505U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012393A (en) * | 2021-04-13 | 2021-06-22 | 南京孝德智能科技有限公司 | Old man is system of endowing at home |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu shunzhou Intelligent Technology Research Institute Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020980005650 Denomination of utility model: A missing alert system based on RFID Granted publication date: 20200414 License type: Common License Record date: 20200902 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |