CN205912074U - Multi -sensor data collection system based on CAN bus and zigBee hybrid network - Google Patents
Multi -sensor data collection system based on CAN bus and zigBee hybrid network Download PDFInfo
- Publication number
- CN205912074U CN205912074U CN201620793210.5U CN201620793210U CN205912074U CN 205912074 U CN205912074 U CN 205912074U CN 201620793210 U CN201620793210 U CN 201620793210U CN 205912074 U CN205912074 U CN 205912074U
- Authority
- CN
- China
- Prior art keywords
- zigbee
- bus
- sensor
- data
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a multi -sensor data collection system based on CAN bus and zigBee hybrid network, include: sensor, CAN sensor node, zigBee change CAN data nodes, zigBee sensor node, the total node of CAN bus, CAN sensor node, zigBee change CAN data nodes and all assemble the node through the CAN bus connection CAN bus, and zigBee sensor node passes through zigBee network wireless with zigBee commentaries on classics CAN data nodes and is connected, and the sensor is connected with CAN sensor node and zigBee sensor node, contain radio frequency transmiting receiving component and data memory cell among the radio frequency network data safety circuit that CAN sensor node and zigBee commentaries on classics CAN data nodes contain, data memory cell can carry out the disaster recovery to the data in this node. The utility model discloses can found a sensor data transmission safety, reliable hybrid network communication system.
Description
Technical field
The utility model is related to a kind of multi-sensor data collection system, more particularly, to a kind of based on can bus with
The multi-sensor data collection system of zigbee hybrid network.
Background technology
In numerous engineering construction monitoring fields, with execution conditions, monitors environment difference to sensor node data
Transmission means also have different requirements, such as preferable local for ground environment or personnel equipment's frequent activity place adopts
Wireless sensor node, can play supervisory function bit, will not cause excessive impact because of frequent lead to construction again；But for length
Remote monitor or the monitoring of adverse circumstances, such as under water, underground, deep drilling well, deep basal pit, the monitoring in deep tunnel etc., wirelessly
The limitation of sensor node is just very big, or even the transmission that cannot realize data in above-mentioned environment.
He Kai etc. (2013) proposes the coal mine gas based on can bus and zigbee in instrumental technique with sensor periodical
Detecting system designs, and the system uses can bus and zigbee network combines it is achieved that by wireless zigbee sensor
The gas data of node monitors is sent to routing node by zigbee wireless network, and routing node is by the data conversion receiving
Become to follow the data of can agreement and be sent to the monitoring system on well by can bus；Song get Ming (2015) is special in utility model
Petroleum seismic survey data Transmission system based on zigbee is proposed, in this system in sharp (patent No.: cn204422771u)
The data of monitoring is sent to zigbee/can node, zigbee/can by zigbee wireless network by zigbee sensor node
Zigbee agreement data conversion is become can protocol data and is sent to host computer by can bus by node.In above two scheme
System bottom is only wireless sensor node, and wireless sensor node can not be completely suitable for above-mentioned monitoring of environmental；System
Upper layer data transmission in, only data is carried out simple transmission process, not to the reliability of data transfer at
Reason.
Above two technology all there is reliability, security, network applicability during transmission data in terms of deficiency:
1st, zigbee wireless network is in rugged environment, such as mine, and signal attenuation is rapid, or even cannot work, and causes
Zigbee wireless senser monitor node cannot be configured it is impossible to be monitored in adverse circumstances, make being suitable for of whole Sensor Network
Property is poor.
2nd, zigbee agreement data is converted to the node of the data of can agreement, and position is most important, if because of various factors
Cause communication failure, then large-area wireless zigbee sensing data cannot be sent to host computer, in user's hand, network
Poor reliability.
If 3 whole can bus network communication paralysis, then the data of all the sensors monitoring will be lost it is impossible to transmit
To in host computer, user's hand, cause the waste of data.
Utility model content
The utility model aims to provide a kind of multi-sensor data collection system based on can bus and zigbee hybrid network
System, can build the safe and reliable hybrid network communication system of data transfer.By radio frequency network data safety circuit
Introduce, make sensor node in the case of itself can communication failure, it is possible to use the can network of adjacent node completes certainly
The transmission of body data, do so enhances the robustness of can bus network, or even during transmission, only exists a section
In the case of the can communication of point is normal, also can complete the data transfer of whole network interior joint.When whole can bus network paralysis
Paralysis, can sensor node, zigbee turn can back end and also sensing data can be stored itself radio frequency network data peace
It is ensured that the data of collection is not lost in data storage cell in whole circuit.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is as follows:
The disclosed multi-sensor data collection system based on can bus and zigbee hybrid network of the utility model, bag
Include sensor, zigbee sensor node, zigbee turn can back end, can bus and the total node of can bus；Described
Zigbee turns can back end and connects the total node of can bus, described sensor and zigbee sensor node by can bus
Connect；Described zigbee sensor node is turned can back end with zigbee and is wirelessly connected by zigbee network；Its feature exists
Turn in, described zigbee and in can back end, be provided with the second radio frequency network data safety circuit, described second radio frequency network number
Include the second RF receiving and transmission module and the second data storage cell according to safety circuit, described second RF receiving and transmission module can be by institute
Turn data in can back end and transmitted by radio frequency network in zigbee and turn can back end to adjacent zigbee, described
The data that two data storage cells can turn to place zigbee in can back end carries out disaster recovery.
Preferably, whole system also includes can sensor node, and described can sensor node is connected with sensor,
Another side is connected with can bus, and sensing data can be transmitted total to can by described can sensor node by wired mode
The total node of line.
Preferably, the first radio frequency network data safety circuit, described first radio frequency network are set in described can sensor node
Network data safety circuit includes the first RF receiving and transmission module and the first data storage cell, and described first RF receiving and transmission module can
Data in the can sensor node of place is transmitted to adjacent can sensor node by radio frequency network, described first data is deposited
Storage unit can carry out disaster recovery to the data in the can sensor node of place.
Preferably, the total node of described can bus includes a mcu controller, a can controller, a can transmitting-receiving
Device, is connected by spi communication protocol between a described mcu controller and a can controller, a described can controller
Connect a can transceiver, described can sensor node, zigbee turn can back end and connect a can by can bus
Transceiver.
Preferably, described can sensor node includes the 2nd mcu controller, the 2nd can controller, the 2nd can transmitting-receiving
Device, the first radio frequency network data safety circuit and first sensor data acquisition circuit, described first radio frequency network data safety
Circuit includes the first RF receiving and transmission module, the first data storage cell and the first clock system；Described first radio frequency network data
In safety circuit, the first data storage cell, the first clock system pass through i2C bus connection the 2nd mcu controller, described second
Can controller, the first RF receiving and transmission module are connected by spi communication protocol with the 2nd mcu controller, described first sensor number
Pass through the first high speed photo coupling according to Acquisition Circuit and connect the 2nd mcu controller, described 2nd can controller connects the 2nd can transmitting-receiving
Device, described 2nd can transceiver connects the total node of can bus by can bus, and described sensor connects first sensor data
Acquisition Circuit.
Preferably, described zigbee turns can back end and includes the 3rd mcu controller, the 3rd can controller, the 3rd can
Transceiver, the second radio frequency network data safety circuit and zigbee receiver module, described second radio frequency network data safety circuit
Including the second RF receiving and transmission module, the second data storage cell and second clock system；Described second data storage cell and
Two clock systems pass through i2C bus connects the 3rd mcu controller, described 3rd can controller, the second RF receiving and transmission module and the
Three mcu controllers are connected by spi communication protocol, and described zigbee receiver module passes through the second high speed photo coupling and connects the 3rd mcu
Controller, described 3rd can controller connects the 3rd can transceiver, and described 3rd can transceiver connects can by can bus
The total node of bus, described zigbee sensor node connects zigbee receiver module.
Preferably, described zigbee sensor node includes zigbee sending module and second sensor data acquisition electricity
Road, power circuit and battery monitoring circuit, described power circuit includes battery, and described battery monitoring circuit connects power circuit,
Described battery monitoring circuit connects zigbee sending module by monobus, and described power circuit connects zigbee sending module,
Described second sensor data acquisition circuit connects zigbee sending module, and described zigbee sending module and zigbee turn can
Back end is wirelessly connected by zigbee network.
Operation principle of the present utility model is as follows:
Can sensor node mainly be responsible for read itself sensing data, and according to itself can bus transfer network, penetrate
In frequency network data security circuit, the different conditions of radio frequency network, carry out different process to the data reading；Zigbee turns
Can back end is mainly responsible for setting up zigbee wireless network, receives the wireless data that zigbee sensor node sends, and will
Receive the data of coming, be converted into following the data of can bus protocol, then according to itself can bus transfer network, radio frequency network
The different conditions of radio frequency network in data safety circuit, carry out different process to the data reading；433m radio frequency network master
It is used for, in the case of itself can bus transfer fault, neighbouring node being transmitted data to, normal by adjacent node
Can bus transfer function, the sensing data of itself is normally sent, thus lifting the reliability of whole data transmission network
Property；Can sensor node, zigbee turn can back end under itself can network failure, radio frequency network fault, by sensor
Data, clock data are stored in it is ensured that data is not lost in the storage system in the radio frequency network data safety circuit of itself,
Accomplish real monitor in real time；Zigbee sensor node is mainly responsible for reading sensing data, its cells electric quantity data, will
The data reading is sent to corresponding zigbee by point-to-point wireless transmission method and turns can back end；Can bus is total
Node mainly be responsible for by the can receiving bus data pass through High Speed Serial correct, errorless be sent to host computer or user.
Contrast the deficiencies in the prior art, the beneficial effects of the utility model are as follows:
Can line sensor node and zigbee wireless sensor node are blended by the utility model, maximize favourable factors and minimize unfavourable ones, according to
The difference of sensor node local environment, carries out different being applied in combination, and makes the applicability of whole Sensor Network higher；And, it is logical
Cross the introducing of radio frequency network in radio frequency network data safety circuit, make sensor node in the case of itself can communication failure,
The transmission of its data can be completed using the can network of adjacent node, enhance the robustness of can bus network, or even
During transmission, in the case of only existing the can communication normally of a node, also can complete the data of whole network interior joint
Transmission；The sensing data collecting can also be carried out effectively in the case of whole can network paralysis by the utility model
Storage, real accomplishes not losing of data.
Brief description
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 1 provides for the utility model
System theory diagram one.
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 2 provides for the utility model
System theory diagram two, with addition of can sensor node.
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 3 provides for the utility model
The theory diagram of the total node of can bus in system.
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 4 provides for the utility model
The theory diagram of can sensor node in system.
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 5 provides for the utility model
In system, zigbee turns the theory diagram of can back end.
The multi-sensor data collection system based on can bus and zigbee hybrid network that Fig. 6 provides for the utility model
The theory diagram of zigbee sensor node in system.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with the accompanying drawings, to this reality
It is further elaborated with new.
As shown in figure 1, the utility model is disclosed being adopted based on the multi-sensor data of can bus and zigbee hybrid network
Collecting system, turns can back end, can bus and can bus and always saves including sensor, zigbee sensor node, zigbee
Point；Zigbee turns can back end and connects the total node of can bus by can bus, and sensor is with zigbee sensor node even
Connect；Zigbee sensor node is turned can back end with zigbee and is wirelessly connected by zigbee network；Wherein, zigbee turns
It is provided with the second radio frequency network data safety circuit, the second radio frequency network data safety circuit includes second in can back end
RF receiving and transmission module and the second data storage cell, place zigbee can be turned can back end by the second RF receiving and transmission module
In data transmitted by radio frequency network and turn can back end to adjacent zigbee, the second data storage cell can be to place
The data that zigbee turns in can back end carries out disaster recovery.
As shown in Fig. 2 the utility model is disclosed being adopted based on the multi-sensor data of can bus and zigbee hybrid network
Collecting system, also includes can sensor node, and can sensor node is connected with sensor, and another side is connected with can bus,
Sensing data can be transmitted node total to can bus by wired mode by can sensor node.Wherein, can sensor section
First radio frequency network data safety circuit is set in point, and described first radio frequency network data safety circuit includes the first radio-frequency receiving-transmitting
Module and the first data storage cell, the data in the can sensor node of place can be led to by described first RF receiving and transmission module
Cross radio frequency network to transmit to adjacent can sensor node, described first data storage cell can be to place can sensor node
In data carry out disaster recovery.
As shown in figure 3, the total node of can bus includes a mcu controller, a can controller, a can transceiver,
It is connected by spi communication protocol between first mcu controller and a can controller, a can controller connects a can
Transceiver, can sensor node, zigbee turn can back end and connect a can transceiver by can bus.First mcu
Controller uses singlechip chip, and a can controller uses mcp2515 chip, and a can transceiver uses ctm8251a collection
Become module.
As shown in figure 4, can sensor node include the 2nd mcu controller, the 2nd can controller, the 2nd can transceiver,
First radio frequency network data safety circuit and first sensor data acquisition circuit, the first radio frequency network data safety circuit includes
First RF receiving and transmission module, the first data storage cell and the first clock system；First data storage cell and the first clock system
System passes through i2C bus connects the 2nd mcu controller, and the 2nd can controller, the first RF receiving and transmission module pass through spi communication protocol
It is connected with the 2nd mcu controller, first sensor data acquisition circuit passes through the first high speed photo coupling and connects the 2nd mcu controller,
2nd can controller connects the 2nd can transceiver, and the 2nd can transceiver connects the total node of can bus, sensing by can bus
Device connects first sensor data acquisition circuit.2nd mcu controller uses singlechip chip, and the first RF receiving and transmission module uses
Based on the 433m radio-frequency module of cc1101 chip, the first data storage cell uses eeprom chip, and the 2nd can controller uses
Mcp2515 chip, the 2nd can transceiver use ctm8251a integration module, the first high speed photo coupling use tlp555 chip, first
Clock system uses pcf8563 main control chip.
As shown in figure 5, zigbee turns can back end includes the 3rd mcu controller, the 3rd can controller, the 3rd can
Transceiver, the second radio frequency network data safety circuit and zigbee receiver module, the second radio frequency network data safety circuit includes
Second RF receiving and transmission module, the second data storage cell and second clock system；Second data storage cell, second clock system
By i2C bus connect the 3rd mcu controller, the 3rd can controller, the second RF receiving and transmission module pass through spi communication protocol with
3rd mcu controller connects, and zigbee receiver module passes through the second high speed photo coupling and connects the 3rd mcu controller, and the 3rd can controls
Device connects the 3rd can transceiver, and the 3rd can transceiver connects the total node of can bus, zigbee sensor section by can bus
Point connects zigbee receiver module.3rd mcu controller uses singlechip chip, and the second RF receiving and transmission module uses and is based on
The 433m radio-frequency module of cc1101 chip, the second data storage cell uses eeprom chip, and the 3rd can controller uses
Mcp2515 chip, the 3rd can transceiver uses ctm8251a integration module, and zigbee receiver module uses and is based on
The zigbee receiver module of cc2530f256 chip, the second high speed photo coupling uses tlp555 chip, and second clock system uses
Pcf8563 main control chip.
As shown in fig. 6, zigbee sensor node include zigbee sending module, second sensor data acquisition circuit,
Power circuit and battery monitoring circuit, power circuit includes battery, and battery monitoring circuit connects power circuit, battery monitoring circuit
Zigbee sending module is connected by monobus, power circuit connects zigbee sending module, second sensor data acquisition electricity
Road connects zigbee sending module, and zigbee sending module and zigbee turn can back end and pass through zigbee wireless network even
Connect.Power circuit is used and is based on using ds2438 chip, zigbee sending module using tsp79533 chip, battery monitoring circuit
The zigbee sending module of cc2530f256 chip.
Above told preferred embodiment only of the present utility model, not in order to limit the utility model.It should be pointed out that
On the premise of the utility model spirit and its essence, those of ordinary skill in the art make according to the utility model
Various corresponding changes and deformation etc., all should be included within protection domain of the present utility model.
Claims (7)
1. the multi-sensor data collection system based on can bus and zigbee hybrid network, including sensor, zigbee sensing
Device node, zigbee turn can back end, can bus and the total node of can bus；Described zigbee turns can back end and leads to
Cross can bus and connect the total node of can bus, described sensor is connected with zigbee sensor node；Described zigbee sensor
Node is turned can back end with zigbee and is wirelessly connected by zigbee network；It is characterized in that, described zigbee turns can number
According to being provided with the second radio frequency network data safety circuit in node, described second radio frequency network data safety circuit includes second and penetrates
Frequency transceiver module and the second data storage cell, place zigbee can be turned can data section by described second RF receiving and transmission module
Data in point is transmitted by radio frequency network and is turned can back end to adjacent zigbee, and described second data storage cell can
Data place zigbee being turned in can back end carries out disaster recovery.
2. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 1, its
It is characterised by, whole system also includes can sensor node, described can sensor node is connected with sensor, another side
It is connected with can bus, sensing data can be transmitted by wired mode and always save to can bus by described can sensor node
Point.
3. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 2, its
It is characterised by, the first radio frequency network data safety circuit, described first radio frequency network data are set in described can sensor node
Safety circuit includes the first RF receiving and transmission module and the first data storage cell, and described first RF receiving and transmission module can will be located
Data in can sensor node is transmitted to adjacent can sensor node, described first data storage cell by radio frequency network
Disaster recovery can be carried out to the data in the can sensor node of place.
4. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 3, its
It is characterised by, the total node of described can bus includes a mcu controller, a can controller, a can transceiver；Described
It is connected by spi communication protocol between first mcu controller and a can controller, a described can controller connects first
Can transceiver, described can sensor node, zigbee turn can back end and connect a can transceiver by can bus.
5. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 3, its
Be characterised by: described can sensor node include the 2nd mcu controller, the 2nd can controller, the 2nd can transceiver, first
Radio frequency network data safety circuit and first sensor data acquisition circuit；Described first radio frequency network data safety circuit includes
First RF receiving and transmission module, the first data storage cell and the first clock system；Described first data storage cell, the first clock
System passes through i2C bus connects the 2nd mcu controller, described 2nd can controller, the first RF receiving and transmission module and the 2nd mcu
Controller is connected by spi communication protocol, and described first sensor data acquisition circuit passes through the first high speed photo coupling and connects second
Mcu controller, described 2nd can controller connects the 2nd can transceiver, and described 2nd can transceiver is connected by can bus
The total node of can bus, described sensor connects first sensor data acquisition circuit.
6. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 3, its
It is characterised by: described zigbee turns can back end and includes the 3rd mcu controller, the 3rd can controller, the 3rd can transmitting-receiving
Device, the second radio frequency network data safety circuit and zigbee receiver module；Described second radio frequency network data safety circuit includes
Second RF receiving and transmission module, the second data storage cell and second clock system；Described second data storage cell, second clock
System passes through i2C bus connects the 3rd mcu controller, described 3rd can controller, the second RF receiving and transmission module and the 3rd mcu
Controller is connected by spi communication protocol, and described zigbee receiver module passes through the second high speed photo coupling and connects the 3rd mcu control
Device, described 3rd can controller connects the 3rd can transceiver, and described 3rd can transceiver connects can bus by can bus
Total node, described zigbee sensor node connects zigbee receiver module.
7. the multi-sensor data collection system based on can bus and zigbee hybrid network according to claim 3, its
It is characterised by: described zigbee sensor node includes zigbee sending module, second sensor data acquisition circuit, power supply electricity
Road and battery monitoring circuit；Described power circuit includes battery, and described battery monitoring circuit connects power circuit；Described battery
Supervisory circuit connects zigbee sending module by monobus, and described power circuit connects zigbee sending module；Described second
Sensor data acquisition circuit connects zigbee sending module, and described zigbee sending module and zigbee turn can back end
Wirelessly connected by zigbee network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793210.5U CN205912074U (en) | 2016-07-26 | 2016-07-26 | Multi -sensor data collection system based on CAN bus and zigBee hybrid network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793210.5U CN205912074U (en) | 2016-07-26 | 2016-07-26 | Multi -sensor data collection system based on CAN bus and zigBee hybrid network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205912074U true CN205912074U (en) | 2017-01-25 |
Family
ID=57802373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620793210.5U Active CN205912074U (en) | 2016-07-26 | 2016-07-26 | Multi -sensor data collection system based on CAN bus and zigBee hybrid network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205912074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108833245A (en) * | 2018-07-25 | 2018-11-16 | 山东精诚电子科技有限公司 | A kind of cascade extension acquisition system and method based on CAN and LoRa |
-
2016
- 2016-07-26 CN CN201620793210.5U patent/CN205912074U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108833245A (en) * | 2018-07-25 | 2018-11-16 | 山东精诚电子科技有限公司 | A kind of cascade extension acquisition system and method based on CAN and LoRa |
| CN108833245B (en) * | 2018-07-25 | 2023-08-15 | 山东精诚致和信息科技有限公司 | Cascade extension acquisition system and method based on CAN and LoRa |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201339487Y (en) | Real-time monitoring system for coal mine underground environmental safety based on wireless sensor network | |
| CN201277062Y (en) | Mine water trouble monitoring and intelligent early-warning system | |
| CN104794860B (en) | Mountain landslide supervision prior-warning device and its control method based on technology of Internet of things | |
| CN207133937U (en) | A kind of forest fire early-warning system based on FPGA and unmanned plane | |
| CN202560325U (en) | Underground multiple-data monitor system for coal mine | |
| CN105179013A (en) | Coal illegal mining monitoring method based on vibration monitoring and positioning | |
| CN201851162U (en) | Wireless monitoring device for coal mine roof separation layer | |
| CN205912074U (en) | Multi -sensor data collection system based on CAN bus and zigBee hybrid network | |
| CN107798827A (en) | Landslide early-warning monitoring system and its monitoring method based on Internet of Things | |
| CN103208173A (en) | Embedded wireless intelligent sensor for geotechnical engineering monitoring | |
| CN201116979Y (en) | Wireless transmission coal mine safety monitoring control device | |
| CN209727052U (en) | A kind of roadway deformation dynamic monitoring system based on laser ranging technique | |
| CN103281804A (en) | Data collecting substation for mine laneway wireless sensor network | |
| CN204677235U (en) | A kind of intelligent all downhole safety warning device | |
| CN111350546A (en) | Coal mine gas monitoring system | |
| CN201818330U (en) | Coal mine underground personal positioning system | |
| CN202523089U (en) | Underground positioning system | |
| CN104900034A (en) | Dynamic displacement monitoring system for equipment chamber base plate of underground coal preparation plant | |
| CN204515432U (en) | Based on the [underground system of ARM | |
| CN203149799U (en) | Buried wireless intelligent sensor for monitoring geotechnical engineering | |
| CN210376303U (en) | Hydrogen sulfide real-time monitoring system suitable for drilling site | |
| CN203340299U (en) | Wireless sensor network for mine laneways | |
| CN203146030U (en) | Gas monitoring system based on CAN bus | |
| CN204649174U (en) | A kind of device of monitoring piping displacement | |
| CN204388917U (en) | A kind of mine underground early warning and monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |