CN210402642U - Hand ring - Google Patents
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- CN210402642U CN210402642U CN201921128649.6U CN201921128649U CN210402642U CN 210402642 U CN210402642 U CN 210402642U CN 201921128649 U CN201921128649 U CN 201921128649U CN 210402642 U CN210402642 U CN 210402642U
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- 239000003990 capacitor Substances 0.000 claims description 48
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 22
- 230000000087 stabilizing effect Effects 0.000 claims description 20
- 230000036772 blood pressure Effects 0.000 claims description 13
- 230000036760 body temperature Effects 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 11
- 239000001569 carbon dioxide Substances 0.000 claims description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000012806 monitoring device Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to a signal monitoring devices, in particular to bracelet. The utility model discloses a bracelet body, and install in the inside circuit board of bracelet body, the circuit board includes control circuit, human signal acquisition circuit, environmental signal acquisition circuit, wireless transmitting circuit, positioning circuit, communication circuit, calling interface circuit, warning circuit, supply circuit. The utility model discloses small, low cost, be convenient for hand-carry, the utility model discloses can monitor health at any time, simple to use, convenient operation.
Description
Technical Field
The utility model relates to a signal monitoring devices, in particular to bracelet.
Background
With the gradual aging of China's society, people should pay more attention to the old, draw a fancy to their health, and care about their lives. It is desirable to better assist patients with acute illness to reduce their harm from acute illness.
Some body monitoring devices for the elderly exist in the prior art, but the size is too large, the monitoring can only be carried out at home, the body condition cannot be monitored at any time and any place, and the cost is very high, so that the improvement is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art not enough, provide a bracelet that small, low cost, be convenient for hand-carry.
To solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model provides a bracelet, includes bracelet body, and install in the inside circuit board of bracelet body, the circuit board includes control circuit, human signal acquisition circuit, environmental signal acquisition circuit, wireless transmitting circuit, positioning circuit, communication circuit, calling interface circuit, alarm circuit, supply circuit, control circuit's signal input part with human signal acquisition circuit, wireless transmitting circuit's signal output part is connected, wireless transmitting circuit's signal input part with environmental signal acquisition circuit's signal output part is connected, control circuit's signal output part is connected with positioning circuit, communication circuit, alarm circuit's signal input part respectively, communication circuit's signal output part is connected with calling interface circuit's signal input part, supply circuit is used for the power supply.
Preferably, the control circuit comprises a control chip, and the model of the control chip is AT89S 51.
Preferably, the communication circuit includes a first chip, the model of the first chip is MT8880, pin 1 of the MT8880 is connected to one end of a second resistor R2, one end of a third resistor R3 and pin 4 of the MT8880, respectively, the other end of the second resistor R2 is connected to a power supply, the other end of the third resistor R3 is grounded, pin 2 of the MT8880 is connected to one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected to one end of a first resistor R1 and pin 3 of the MT8880, the other end of the first resistor R1 is connected to a call interface circuit through a first capacitor C1, pin 8 of the MT8880 is connected to one end of a fourth resistor R4, one end of a second capacitor C2 and the call interface circuit, the other ends of the fourth resistor R4 and the second capacitor C2 are connected to one end of a fifth resistor R5 and pin 5 of the MT8880, and the other end of the fifth resistor R5 is connected to pin 886 and pin 8880, the other end of the crystal oscillator is connected with a pin 7 of an MT8880, a pin 18 of the MT8880 is connected with one end of a seventh resistor R7, the other end of the seventh resistor R7 is respectively connected with one end of a fourth capacitor C4 and a pin 19 of the MT8880, and the other end of the fourth capacitor C4 is respectively connected with one end of a third capacitor C3, a pin 20 of the MT8880 and a power supply; pins 9-17 of the MT8880 are all connected with a control chip.
Preferably, the power supply circuit includes a 12V switching power supply, one power input end of the 12V switching power supply is connected to one input end of the intermediate relay, the other power input end of the 12V switching power supply and the other input end of the intermediate relay are both connected to the storage battery, the positive output end of the intermediate relay is respectively connected to one end of an eighth resistor R8 and the collector of a first triode Q1, the other end of the eighth resistor R8 is connected to the +12V power supply, the base of the first triode Q1 is connected to one end of a ninth resistor R9, the other end of the ninth resistor R9 is used as the power supply output end of the power supply circuit, the emitter of the first triode Q1 is connected to the negative output end of the intermediate relay and is grounded, the positive output end of the 12V switching power supply is respectively connected to one end of a fifth capacitor C5, the input end of the first voltage stabilizing chip and the +12V power, the negative electrode output end of the 12V switching power supply is respectively connected with the other end of the fifth capacitor C5, one end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8, one end of the ninth capacitor C9, the grounding end of the first voltage stabilizing chip and the grounding end of the second voltage stabilizing chip, and is grounded, the output end of the first voltage stabilizing chip is respectively connected with the other end of the sixth capacitor C6, the other end of the seventh capacitor C7, the input end of the second voltage stabilizing chip and a +5V power supply, and the output end of the second voltage stabilizing chip is respectively connected with the other end of the eighth capacitor C8, the other end of the ninth capacitor C9 and a +3.3V power supply.
Furthermore, the human body signal acquisition circuit comprises a body temperature sensor, a blood pressure sensor and a heart rate sensor, and the signal output ends of the body temperature sensor, the blood pressure sensor and the heart rate sensor are all connected with the signal input end of the control circuit.
Further, the environmental signal acquisition circuit includes temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the sensor that soaks, temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the signal output part of the sensor that soaks all with wireless transmitting circuit's signal input part is connected.
Furthermore, the wireless transmitting circuits comprise coding chips, and the coding chips adopt PT 2262.
Further, the positioning circuit is a GPS positioning circuit.
Further, the call interface circuit is a SIM card communication circuit.
Further, the alarm circuit comprises a buzzer and an LED lamp.
The utility model has the advantages that:
(1) the utility model discloses a bracelet body, and install in the inside circuit board of bracelet body, the circuit board includes control circuit, human signal acquisition circuit, ambient signal acquisition circuit, wireless transmitting circuit, positioning circuit, communication circuit, calling interface circuit, alarm circuit, supply circuit, the utility model discloses small, low cost, be convenient for hand-carry, the utility model discloses can monitor health at any time, simple to use, convenient operation.
(2) The utility model discloses a control circuit includes control chip, control chip' S model is AT89S51, and corresponding function can be realized to AT89S51 chip only need build simple peripheral circuit, has reduced cost and volume greatly, but extensive application in daily life.
Drawings
The following brief descriptions of the contents expressed by each figure and the marks in the figures in the specification of the present invention are as follows:
fig. 1 is a connection block diagram of the circuit board of the present invention.
Fig. 2 is a schematic circuit diagram of the communication circuit of the present invention.
Fig. 3 is a schematic circuit diagram of the power supply circuit of the present invention.
The reference numerals in the figures have the following meanings:
1-control circuit 2-human body signal acquisition circuit
3-environment signal acquisition circuit 4-wireless transmitting circuit
5-positioning circuit 6-communication circuit
7-calling interface circuit 8-alarm circuit
9-supply circuit
Detailed Description
The following is a more detailed description of the embodiments of the present invention, such as the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, and the like, with reference to the accompanying drawings:
as shown in figure 1, a bracelet comprises a bracelet body and a circuit board installed inside the bracelet body, wherein the circuit board comprises a control circuit 1, a human body signal acquisition circuit 2, an environment signal acquisition circuit 3, a wireless transmission circuit 4, a positioning circuit 5, a communication circuit 6, a calling interface circuit 7, an alarm circuit 8 and a power supply circuit 9, the signal input end of the control circuit 1 is connected with the signal output ends of the human body signal acquisition circuit 2 and the wireless transmission circuit 4, the signal input end of the wireless transmission circuit 4 is connected with the signal output end of the environment signal acquisition circuit 3, the signal output end of the control circuit 1 is respectively connected with the signal input ends of the positioning circuit 5, the communication circuit 6 and the alarm circuit 8, the signal output end of the communication circuit 6 is connected with the signal input end of the calling interface circuit 7, the power supply circuit 9 is used for supplying power.
As shown in fig. 2, the communication circuit 6 includes a first chip, the model of the first chip is MT8880, pin 1 of the MT8880 is connected to one end of a second resistor R2, one end of a third resistor R3 and pin 4 of the MT8880, the other end of the second resistor R2 is connected to a power supply, the other end of the third resistor R3 is grounded, pin 2 of the MT8880 is connected to one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected to one end of a first resistor R1 and pin 3 of the MT8880, the other end of the first resistor R1 is connected to a call interface circuit 7 through a first capacitor C1, pin 8 of the MT8880 is connected to one end of a fourth resistor R4, one end of a second capacitor C2 and the call interface circuit 7, the other end of the fourth resistor R4 and the other end of the second capacitor C2 are connected to one end of a fifth resistor R5 and pin 5 of the MT8880, and the other end of the resistor R5 and the pin 886 are connected to the pin 886, the other end of the crystal oscillator is connected with a pin 7 of an MT8880, a pin 18 of the MT8880 is connected with one end of a seventh resistor R7, the other end of the seventh resistor R7 is respectively connected with one end of a fourth capacitor C4 and a pin 19 of the MT8880, and the other end of the fourth capacitor C4 is respectively connected with one end of a third capacitor C3, a pin 20 of the MT8880 and a power supply; pins 9-17 of the MT8880 are all connected with a control chip.
As shown in fig. 3, the power supply circuit 9 includes a 12V switching power supply, one power input terminal of the 12V switching power supply is connected to one input terminal of the intermediate relay, the other power input terminal of the 12V switching power supply and the other input terminal of the intermediate relay are both connected to the storage battery, the positive output terminal of the intermediate relay is respectively connected to one end of an eighth resistor R8 and the collector of a first triode Q1, the other end of the eighth resistor R8 is connected to the +12V power supply, the base of the first triode Q1 is connected to one end of a ninth resistor R9, the other end of the ninth resistor R9 is used as the power supply output terminal of the power supply circuit 9, the emitter of the first triode Q1 is connected to the negative output terminal of the intermediate relay and grounded, the positive output terminal of the 12V switching power supply is respectively connected to one end of a fifth capacitor C5, the input terminal of a first voltage stabilizing chip and the +12, the negative electrode output end of the 12V switching power supply is respectively connected with the other end of the fifth capacitor C5, one end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8, one end of the ninth capacitor C9, the grounding end of the first voltage stabilizing chip and the grounding end of the second voltage stabilizing chip, and is grounded, the output end of the first voltage stabilizing chip is respectively connected with the other end of the sixth capacitor C6, the other end of the seventh capacitor C7, the input end of the second voltage stabilizing chip and a +5V power supply, and the output end of the second voltage stabilizing chip is respectively connected with the other end of the eighth capacitor C8, the other end of the ninth capacitor C9 and a +3.3V power supply.
Furthermore, the model of the first voltage stabilizing chip is LM1117-5, and the model of the second voltage stabilizing chip is LM 1117-3.3.
And an intermediate relay is connected in series with the power supply module and is controlled by the control chip, and the power supply is disconnected when the control chip judges that the temperature exceeds the maximum value.
It should be noted that: the storage battery outputs DC12V after passing through a 12V switching power supply, and then passes through a voltage stabilization chip LM1117 to be respectively stabilized to 5V and 3.3V, an intermediate relay is connected in series with a main power circuit and is controlled by a main control chip, when the control chip judges that the temperature exceeds the maximum value, the power supply is disconnected, the storage battery is introduced through a P1 port, the intermediate relay is in a normally closed state, an AC end is communicated, 12V direct current is generated through S1, and then 5V and 3.3V are stabilized. The state of the S2 is controlled by a control chip through a switch circuit consisting of a first triode Q1, when the power supply circuit is in normal use, the first triode Q1 is conducted, the S2 is not electrified and is always in a normally closed state, when a signal is generated at the power supply output end of the power supply circuit 9, the triode is turned off, the S2 is electrified and is in a normally open state, and the AC end is disconnected.
The control circuit 1 comprises a control chip, and the model of the control chip is AT89S 51.
The human body signal acquisition circuit 2 comprises a body temperature sensor, a blood pressure sensor and a heart rate sensor, and the signal output ends of the body temperature sensor, the blood pressure sensor and the heart rate sensor are connected with the signal input end of the control circuit 1. Specifically, the body temperature sensor is used for collecting the body temperature, the blood pressure sensor is used for collecting the blood pressure of the human body, the heart rate sensor is used for collecting the heart rate of the human body, and the collected body temperature, the collected blood pressure and the collected heart rate of the human body are sent to the control circuit 1.
The environment signal acquisition circuit 3 includes temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the sensor that soaks, the signal output part of temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the sensor that soaks all with wireless transmitting circuit 4's signal input part is connected. Specifically, temperature sensor is used for monitoring temperature information in the house, humidity transducer is used for monitoring humidity information in the house, carbon monoxide transducer is used for monitoring whether carbon monoxide exists in the house, carbon dioxide transducer is used for monitoring whether carbon dioxide exists in the house, smoke transducer is used for monitoring whether smoke concentration exceeds standard in the house, the sensor that soaks is used for monitoring whether soaks in the house.
Specifically, ambient signal acquisition circuit 3 with wireless transmitting circuit 4 is wired and is connected, wireless transmitting circuit 4 with control circuit 1 is wireless and is connected, consequently will ambient signal acquisition circuit 3 with wireless transmitting circuit 4 installs in the family, forms wireless communication with the bracelet, has also avoided the too big inconvenience of wearing that leads to of bracelet, sets up ambient signal acquisition circuit 3's purpose is, when the people is at home, can monitor the environmental information in the family through ambient signal acquisition circuit 3.
The wireless transmitting circuits 4 all comprise coding chips, and the coding chips adopt PT 2262. The wireless transmitting circuit 4 is used for transmitting the temperature sensor, the humidity sensor, the carbon monoxide sensor, the carbon dioxide sensor, the smoke sensor and the immersion sensor which are acquired by the environment signal acquisition circuit 3 to the control circuit 1.
The positioning circuit 5 is a GPS positioning circuit for positioning a specific position of a user.
The call interface circuit 7 is an SIM card communication circuit, and can communicate with the outside to let the outside know the physical condition of the user or give an alarm like the outside.
The alarm circuit 8 comprises a buzzer and an LED lamp.
In order to make the technical solution of the present invention clearer, the following description is made of a specific embodiment of the present invention.
When the bracelet works, firstly, the human body signal acquisition circuit 2 acquires the human body temperature, the human body blood pressure and the human body heart rate, and transmits the acquired human body temperature, the human body blood pressure and the human body heart rate to the control circuit 1, the positioning circuit 5 positions the specific position of a user at any time, the control circuit 1 judges whether the acquired human body temperature, the acquired human body blood pressure and the acquired human body heart rate are within a set threshold value, if the acquired human body temperature, the acquired human body blood pressure and the acquired human body heart rate are not within the set threshold value, the control circuit judges that the physical condition of the user is abnormal, the alarm circuit 8 performs sound-light alarm, the communication circuit 6 triggers the calling interface circuit 7, and the. When the user is at home, ambient signal acquisition circuit 3 with wireless transmitting circuit 4 automatic with control circuit 1 connects, and the temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the sensor that soaks that will gather send to control circuit 1, whether temperature sensor, humidity transducer, carbon monoxide sensor, carbon dioxide sensor, smoke transducer, the sensor that soaks that control circuit 1 judgement was gathered are within setting for the threshold value, if not, then judge that the family is unusual, then pass through alarm circuit 8 carries out audible-visual alarm to through communication circuit 6 trigger call interface circuit 7, call for help to the external world.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (10)
1. A bracelet, its characterized in that: comprises a bracelet body and a circuit board arranged in the bracelet body, wherein the circuit board comprises a control circuit (1), a human body signal acquisition circuit (2), an environment signal acquisition circuit (3), a wireless transmitting circuit (4), a positioning circuit (5), a communication circuit (6), a calling interface circuit (7), an alarm circuit (8) and a power supply circuit (9), the signal input end of the control circuit (1) is connected with the signal output ends of the human body signal acquisition circuit (2) and the wireless transmitting circuit (4), the signal input end of the wireless transmitting circuit (4) is connected with the signal output end of the environment signal acquisition circuit (3), the signal output end of the control circuit (1) is respectively connected with the signal input ends of the positioning circuit (5), the communication circuit (6) and the alarm circuit (8), the signal output end of the communication circuit (6) is connected with the signal input end of the call interface circuit (7), and the power supply circuit (9) is used for supplying power.
2. A bracelet according to claim 1, characterized in that: the control circuit (1) comprises a control chip, and the model of the control chip is AT89S 51.
3. A bracelet according to claim 2, characterized in that: the communication circuit (6) comprises a first chip, the model of the first chip is MT8880, pin 1 of the MT8880 is respectively connected with one end of a second resistor R2, one end of a third resistor R3 and pin 4 of the MT8880, the other end of the second resistor R2 is connected with a power supply, the other end of the third resistor R3 is grounded, pin 2 of the MT8880 is connected with one end of a sixth resistor R6, the other end of the sixth resistor R6 is respectively connected with one end of a first resistor R1 and pin 3 of the MT8880, the other end of the first resistor R1 is connected with a call interface circuit (7) through a first capacitor C1, pin 8 of the MT8880 is respectively connected with one end of a fourth resistor R4, one end of a second capacitor C2 and the call interface circuit (7), the other end of the fourth resistor R4 and the other end of the second capacitor C2 are respectively connected with one end of a fifth resistor R5 and pin 5 of the MT8880, and the other end of the resistor R5 and the pin 886 are respectively connected with one end of the pin 886, the other end of the crystal oscillator is connected with a pin 7 of an MT8880, a pin 18 of the MT8880 is connected with one end of a seventh resistor R7, the other end of the seventh resistor R7 is respectively connected with one end of a fourth capacitor C4 and a pin 19 of the MT8880, and the other end of the fourth capacitor C4 is respectively connected with one end of a third capacitor C3, a pin 20 of the MT8880 and a power supply; pins 9-17 of the MT8880 are all connected with a control chip.
4. A bracelet according to claim 1, characterized in that: the power supply circuit (9) comprises a 12V switching power supply, one power input end of the 12V switching power supply is connected with one input end of the intermediate relay, the other power input end of the 12V switching power supply and the other input end of the intermediate relay are connected with the storage battery, the positive output end of the intermediate relay is respectively connected with one end of an eighth resistor R8 and the collector of a first triode Q1, the other end of the eighth resistor R8 is connected with a +12V power supply, the base of the first triode Q1 is connected with one end of a ninth resistor R9, the other end of the ninth resistor R9 is used as the power supply output end of the power supply circuit (9), the emitter of the first triode Q1 is connected with the negative output end of the intermediate relay and is grounded, the positive output end of the 12V switching power supply is respectively connected with one end of a fifth capacitor C5, the input end of a first voltage stabilizing chip and the +12V power, the negative electrode output end of the 12V switching power supply is respectively connected with the other end of the fifth capacitor C5, one end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8, one end of the ninth capacitor C9, the grounding end of the first voltage stabilizing chip and the grounding end of the second voltage stabilizing chip, and is grounded, the output end of the first voltage stabilizing chip is respectively connected with the other end of the sixth capacitor C6, the other end of the seventh capacitor C7, the input end of the second voltage stabilizing chip and a +5V power supply, and the output end of the second voltage stabilizing chip is respectively connected with the other end of the eighth capacitor C8, the other end of the ninth capacitor C9 and a +3.3V power supply.
5. A bracelet according to claim 1, characterized in that: the human body signal acquisition circuit (2) comprises a body temperature sensor, a blood pressure sensor and a heart rate sensor, and the signal output ends of the body temperature sensor, the blood pressure sensor and the heart rate sensor are connected with the signal input end of the control circuit (1).
6. A bracelet according to claim 1, characterized in that: the environment signal acquisition circuit (3) comprises a temperature sensor, a humidity sensor, a carbon monoxide sensor, a carbon dioxide sensor, a smoke sensor and a water immersion sensor, and the signal output ends of the temperature sensor, the humidity sensor, the carbon monoxide sensor, the carbon dioxide sensor, the smoke sensor and the water immersion sensor are connected with the signal input end of the wireless transmitting circuit (4).
7. A bracelet according to claim 1, characterized in that: the wireless transmitting circuits (4) comprise coding chips, and the coding chips adopt PT 2262.
8. A bracelet according to claim 1, characterized in that: the positioning circuit (5) is a GPS positioning circuit.
9. A bracelet according to claim 1, characterized in that: the call interface circuit (7) is an SIM card communication circuit.
10. A bracelet according to claim 1, characterized in that: the alarm circuit (8) comprises a buzzer and an LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921128649.6U CN210402642U (en) | 2019-07-18 | 2019-07-18 | Hand ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921128649.6U CN210402642U (en) | 2019-07-18 | 2019-07-18 | Hand ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210402642U true CN210402642U (en) | 2020-04-24 |
Family
ID=70355086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921128649.6U Expired - Fee Related CN210402642U (en) | 2019-07-18 | 2019-07-18 | Hand ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210402642U (en) |
-
2019
- 2019-07-18 CN CN201921128649.6U patent/CN210402642U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |