CN219105606U - Underground garage outlet safety alarm device for bidirectional control - Google Patents

Underground garage outlet safety alarm device for bidirectional control Download PDF

Info

Publication number
CN219105606U
CN219105606U CN202223292146.7U CN202223292146U CN219105606U CN 219105606 U CN219105606 U CN 219105606U CN 202223292146 U CN202223292146 U CN 202223292146U CN 219105606 U CN219105606 U CN 219105606U
Authority
CN
China
Prior art keywords
pin
circuit board
lcd
pressure sensor
digital
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
Application number
CN202223292146.7U
Other languages
Chinese (zh)
Inventor
穆丽花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renhe Middle School Shunyi District Beijing
Original Assignee
Renhe Middle School Shunyi District Beijing
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Renhe Middle School Shunyi District Beijing filed Critical Renhe Middle School Shunyi District Beijing
Priority to CN202223292146.7U priority Critical patent/CN219105606U/en
Application granted granted Critical
Publication of CN219105606U publication Critical patent/CN219105606U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Emergency Alarm Devices (AREA)
  • Audible And Visible Signals (AREA)

Abstract

The utility model discloses an underground garage outlet safety alarm device for bidirectional control, which comprises a control platform taking an Arduino circuit board as a control core, wherein the control platform is respectively connected with an LCD 12864 display screen, a first pressure sensor, a second pressure sensor, an HC-SR04 ultrasonic ranging module, an LED traffic light and an MP3 audio player. The other sensor is arranged at the position of 5 meters out of the garage outlet, when the automobile leaves the garage outlet, the red light is turned off, the green light is turned on, and meanwhile, MP3 is played to remind people of passing safely. The garage outlet is provided with the ultrasonic ranging module, so that whether a pedestrian passes through the garage outlet or not can be detected, and a signal is transmitted to the vehicle warning information or signal which is about to exit the garage outlet, thereby achieving the function of bidirectional reminding.

Description

Underground garage outlet safety alarm device for bidirectional control
Technical Field
The application relates to the field of mechanical and electronic products, in particular to an underground garage outlet safety alarm device for bidirectional control.
Background
Many underground garages in large supermarkets have the characteristics of corners, ramps, closed two sides and walls, have blind areas for the sight of drivers and have larger influence on driving of the drivers. The market is more luxuriant, and many garage exits are adjacent to roads, so that people can transversely pass through the outside of the exit of the ground warehouse, and people and vehicles meet. Especially, every night or weekend, the large flow of people in and out of each mall has the problem of potential safety hazard to pedestrians. The utility model provides a technical scheme for solving the problem of the potential safety hazard.
The technical scheme disclosed in the publication mainly comprises the steps that when a microprocessor detects that a pressure value changes through a second pressure sensor matrix and the current pressure value is larger than a preset pressure value, the microprocessor collects pressure information applied by wheels through the second pressure sensor matrix, extracts characteristics and matches the characteristics. The feature extraction mainly extracts the average pressure value applied by the second pressure sensor matrix of the vehicle wheel pair and the grain feature information of each wheel. The characteristic matching mainly matches the average pressure value and the grain characteristics of each wheel applied by the second pressure sensor matrix of the current vehicle wheel pair with the average pressure value and grain characteristic information of each wheel of each vehicle stored in the database.
If the average pressure value of the current vehicle applied to the second pressure sensor matrix and the grain characteristic information of each wheel of the vehicle are matched with the information of a certain vehicle stored in the database, the microprocessor firstly deletes the average pressure value of the vehicle and the grain characteristic information of each wheel of the vehicle stored in the database; then, the counting unit performs one-step subtracting operation on the number of vehicles to be driven out of the garage at present; then, the microprocessor judges whether to end the garage car-out safety prompt operation or not, and decides whether to end the garage car-out safety prompt operation or not by judging whether the number of vehicles to be driven out of the garage is zero or not, if the number of the vehicles is zero, the microprocessor controls the prompt unit to stop the garage car-out safety prompt operation through the driving unit. "
The inventor considers that the technical scheme is not suitable for underground temporary parking garages such as business and office buildings in public places through the preset threshold value of the pressure sensor, matching and feature extraction of vehicle information stored in the database, and the like.
Disclosure of Invention
The utility model aims to provide a bidirectional control safety alarm device for safe vehicle outgoing of an underground garage.
In order to achieve the aim of the utility model, the technical scheme provided by the utility model is as follows: an underground garage exit safety alarm device for bidirectional control comprises a control platform taking an Arduino circuit board as a control core, wherein the control platform is respectively connected with an LCD 12864 display screen, a first pressure sensor, a second pressure sensor, an HC-SR04 ultrasonic ranging module, an LED traffic light and an MP3 audio player,
the LCD 12864 display screen is arranged right above the underground garage outlet and is used for displaying early warning information for reminding whether a pedestrian passes by or not;
the first pressure sensor is arranged at the bottom of the underground garage exit ramp, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicles are pressed to the first pressure sensor so as to convey the information about the passing of the vehicles;
the second pressure sensor is arranged on a road at one side outside the underground garage outlet, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicle presses the second pressure sensor to transmit the information that the vehicle passes through;
the LED traffic light is arranged at one side of the outer part of the underground garage outlet, which is opposite to the position of the second pressure sensor, and is used for displaying information for reminding pedestrians;
the HC-SR04 ultrasonic ranging module is arranged in the LED traffic light and used for detecting whether pedestrians pass through an underground garage outlet;
the MP3 audio player is arranged in the LED traffic light and used for reminding pedestrians in a voice mode.
The preferred technical scheme provided by the utility model is that a backlight source cathode BLK pin of the LCD 12864 display screen is connected with a GND pin of an Arduino circuit board; the backlight source positive BLA pin of the LCD 12864 display screen is connected with the VCC pin of the Arduino circuit board; the reset RST pin of the LCD 12864 display screen is connected with the VCC pin; the parallel port/serial port communication selection end PSB pin of the LCD 12864 display screen is connected with the GND pin; DB0 pin, DB1 pin, DB2 pin, DB3 pin, DB4 pin, DB5 pin, DB6 pin, DB7 pin of the LCD 12864 display screen are respectively connected with digital pin 2, digital pin 3, digital pin 4, digital pin 5, digital pin 6, digital pin 7, digital pin 8, digital pin 9 of the Arduino circuit board; an enable signal E pin of the LCD 12864 display screen is connected with a digital pin 10 of the Arduino circuit board; the R/W pin of the read/write selection port of the LCD 12864 display screen is connected with the digital pin 11 of Arduino; the data command select port RS pin of the LCD 12864 display is connected to the digital pin 12 of the Arduino circuit board.
Preferably, the LCD 12864 display screen is also connected with a 10K potentiometer for adjusting the brightness of the LCD 12864 display screen; the V0 pin of the LCD 12864 display screen is connected with the middle pin of the 10K potentiometer; the VCC pin of the LCD 12864 display screen is connected with the left pin of the 10K potentiometer; the GND pin of the LCD 12864 display screen is connected with the right pin of the potentiometer.
Preferably, the data transmission TXD pin of the MP3 is connected with the digital pin 18 of the Arduino circuit board; the data receiving RXD pin is connected with a digital pin 19 pin of the Arduino circuit board; the VCC pin of MP3 is connected with the 5V pin of the Arduino circuit board; the GND pin of MP3 is connected with the GND pin of the Arduino circuit board.
Preferably, the VCC pin of the HC-SR04 is connected with the 5V pin of the Arduino circuit board; the trigger input Trig pin is connected with the digital pin 14 of the Arduino circuit board; the Echo pin is connected with a digital pin 15 of the Arduino circuit board; the GND pin of the ultrasonic ranging module HC-SR04 is connected with the GND pin of the Arduino circuit board.
Preferably, the R pin of the LED traffic light is connected with the 16 pins of the digital pin of the Arduino circuit board; the G pin of the LED traffic light is connected with the 17 pins of the digital pin of the Arduino circuit board; and the GND pin of the LED traffic light is connected with the GND pin of the Arduino circuit board.
Preferably, the S pin of the first pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the first pressure sensor is connected with the GND pin of the circuit board of Arduino; the VCC pin of the first pressure sensor is connected with the 5V pin of the Arduino circuit board.
Preferably, the S pin of the second pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the second pressure sensor is connected with the GND pin of the Arduino circuit board; the VCC pin of the second pressure sensor is connected with the 5V pin of the Arduino circuit board.
The beneficial effects of the utility model are as follows:
the technical scheme of the utility model can realize the bidirectional reminding function. A sensor is arranged at the slope bottom of the garage, when an automobile presses the sensor, a red light at the exit of the garage is lighted, and meanwhile, voice is played. The other sensor is arranged at the position of 5 meters out of the garage outlet, when the automobile leaves the garage outlet, the red light is turned off, the green light is turned on, and meanwhile, MP3 is played to remind people of passing safely. The ultrasonic ranging module arranged at the garage outlet can detect whether pedestrians pass through the garage outlet or not and transmit signals to vehicle warning information or signals to be driven out of the garage outlet, so that the function of bidirectional reminding is achieved.
Term interpretation:
vcc, vcircuit, herein means the meaning of a circuit, i.e., the voltage to which the circuit is connected; GND (ground) represents a ground line or a0 line; LCD 12864 is represented as a display screen with model 12864, BLK is a backlight negative electrode, BLA is a backlight positive electrode, RST (reset abbreviation) is represented as reset, and PSB is represented as a parallel/serial port communication selection end; e is an enable signal; R/W is a read/write selection port, RS is a data command selection port;
the TXD of MP3 means data transmission, RXD means data reception;
HC-SR04 is the ultrasonic ranging module, trig is the meaning of trigger input, and Echo is the meaning of Echo.
Drawings
FIG. 1 is a schematic diagram of a circuit module structure according to the present utility model;
FIG. 2 is a schematic view of the mounting structure of the present utility model;
fig. 3 is a circuit configuration diagram of the present utility model.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a circuit module structure of the present utility model, fig. 2 is a schematic diagram of an installation structure of the present utility model, and as shown in fig. 1 and fig. 2, the present utility model relates to an underground garage exit safety alarm device for bidirectional control, which comprises a control platform using an Arduino circuit board as a control core, wherein the control platform is respectively connected with an LCD 12864 display screen, a first pressure sensor, a second pressure sensor, an HC-SR04 ultrasonic ranging module, an LED traffic light and an MP3 audio player, wherein the LCD 12864 display screen is arranged right above the underground garage exit and is used for displaying early warning information for reminding whether a vehicle has a pedestrian to pass; the first pressure sensor is arranged at the bottom of the underground garage exit ramp, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicles are pressed to the first pressure sensor so as to convey the information about the passing of the vehicles; the second pressure sensor is arranged on a road at one side outside the underground garage outlet, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicle presses the second pressure sensor to transmit the information that the vehicle passes through; the LED traffic light is arranged at one side of the outer part of the underground garage outlet, which is opposite to the position of the second pressure sensor, and is used for displaying information for reminding pedestrians; the HC-SR04 ultrasonic ranging module is arranged in the LED traffic light and used for detecting whether pedestrians pass through an underground garage outlet; the MP3 audio player is arranged in the LED traffic light and used for reminding pedestrians in a voice mode.
FIG. 3 is a circuit diagram of the present utility model, as shown in FIG. 3, the negative BLK pin of the backlight source of the LCD 12864 display screen is connected with the GND pin of the Arduino circuit board; the backlight source positive BLA pin of the LCD 12864 display screen is connected with the VCC pin of the Arduino circuit board; the reset RST pin of the LCD 12864 display screen is connected with the VCC pin; the parallel port/serial port communication selection end PSB pin of the LCD 12864 display screen is connected with the GND pin; DB0 pin, DB1 pin, DB2 pin, DB3 pin, DB4 pin, DB5 pin, DB6 pin, DB7 pin of the LCD 12864 display screen are respectively connected with digital pin 2, digital pin 3, digital pin 4, digital pin 5, digital pin 6, digital pin 7, digital pin 8, digital pin 9 of the Arduino circuit board; an enable signal E pin of the LCD 12864 display screen is connected with a digital pin 10 of the Arduino circuit board; the R/W pin of the read/write selection port of the LCD 12864 display screen is connected with the digital pin 11 of Arduino; the RS pin of the data command selection port of the LCD 12864 display screen is connected with the digital pin 12 of the Arduino circuit board; the LCD 12864 display screen is also connected with a 10K potentiometer for adjusting the brightness of the LCD 12864 display screen; the V0 pin of the LCD 12864 display screen is connected with the middle pin of the 10K potentiometer; the VCC pin of the LCD 12864 display screen is connected with the left pin of the 10K potentiometer; the GND pin of the LCD 12864 display screen is connected with the right pin of the potentiometer.
The data transmission TXD pin of the MP3 is connected with the digital pin 18 of the Arduino circuit board; the data receiving RXD pin is connected with a digital pin 19 pin of the Arduino circuit board; the VCC pin of MP3 is connected with the 5V pin of the Arduino circuit board; the GND pin of MP3 is connected with the GND pin of the Arduino circuit board.
The VCC pin of the ultrasonic ranging module HC-SR04 is connected with the 5V pin of the Arduino circuit board; the trigger input Trig pin is connected with the digital pin 14 of the Arduino circuit board; the Echo pin is connected with a digital pin 15 of the Arduino circuit board; the GND pin of the ultrasonic ranging module HC-SR04 is connected with the GND pin of the Arduino circuit board.
The R pin of the LED traffic light is connected with the 16 pins of the digital pin of the Arduino circuit board; the G pin of the LED traffic light is connected with the 17 pins of the digital pin of the Arduino circuit board; and the GND pin of the LED traffic light is connected with the GND pin of the Arduino circuit board.
The S pin of the first pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the first pressure sensor is connected with the GND pin of the circuit board of Arduino; the VCC pin of the first pressure sensor is connected with the 5V pin of the Arduino circuit board.
The S pin of the second pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the second pressure sensor is connected with the GND pin of the Arduino circuit board; the VCC pin of the second pressure sensor is connected with the 5V pin of the Arduino circuit board.
The utility model can avoid collision of vehicles and people, ensures the safety of people, so that people can avoid in time, and the specific implementation process is as follows:
1. when no vehicle is driven out of the underground garage: the LED traffic light is in a turned-off state, and MP3 does not play voice;
2. when the underground garage has a vehicle to drive out:
(1) When a vehicle presses a first pressure sensor at the bottom of a slope, a red light (R) of the LED red light is turned on, a green light (G) of the LED red light is turned off, and MP3 voice broadcasting is performed: the vehicle is driven out and waits in front.
(2) When a person approaches the garage exit, the HC-SR04 ultrasonic ranging module detects that a person needs to pass through the garage exit, and the LCD 12864 prompts: the pedestrians pass in front and ask to slow down.
(3) When the vehicle leaves the garage exit and the people and vehicles meet the area, the red light (R) of the LED red light is turned off, the green light (G) of the LED red light is turned on, and meanwhile, the voice is played: "the vehicle has been driven out, can pass safely".
The device can realize a bidirectional reminding function. When vehicles and people meet at the exit section of the ground warehouse, the potential safety hazard problem is solved by arranging the reminding device.
The described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Claims (8)

1. The underground garage exit safety alarm device for bidirectional control is characterized by comprising a control platform taking an Arduino circuit board as a control core, wherein the control platform is respectively connected with an LCD 12864 display screen, a first pressure sensor, a second pressure sensor, an HC-SR04 ultrasonic ranging module, an LED traffic light and an MP3 audio player,
the LCD 12864 display screen is arranged right above the underground garage outlet and is used for displaying early warning information for reminding whether a pedestrian passes by or not;
the first pressure sensor is arranged at the bottom of the underground garage exit ramp, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicles are pressed to the first pressure sensor so as to convey the information about the passing of the vehicles;
the second pressure sensor is arranged on a road at one side outside the underground garage outlet, and is used for controlling the LED traffic lights through the Arduino circuit board when the vehicle presses the second pressure sensor to transmit the information that the vehicle passes through;
the LED traffic light is arranged at one side of the outer part of the underground garage outlet, which is opposite to the position of the second pressure sensor, and is used for displaying information for reminding pedestrians;
the HC-SR04 ultrasonic ranging module is arranged in the LED traffic light and used for detecting whether pedestrians pass through an underground garage outlet;
the MP3 audio player is arranged in the LED traffic light and used for reminding pedestrians in a voice mode.
2. The underground garage exit safety warning device for two-way control of claim 1, wherein the backlight negative BLK pin of the LCD 12864 display is connected to the GND pin of the Arduino circuit board; the backlight source positive BLA pin of the LCD 12864 display screen is connected with the VCC pin of the Arduino circuit board; the reset RST pin of the LCD 12864 display screen is connected with the VCC pin; the parallel port/serial port communication selection end PSB pin of the LCD 12864 display screen is connected with the GND pin; DB0 pin, DB1 pin, DB2 pin, DB3 pin, DB4 pin, DB5 pin, DB6 pin and DB7 pin of the LCD 12864 display screen are respectively connected with a digital pin 2, a digital pin 3, a digital pin 4, a digital pin 5, a digital pin 6, a digital pin 7, a digital pin 8 and a digital pin 9 of the Arduino circuit board; an enable signal E pin of the LCD 12864 display screen is connected with a digital pin 10 of the Arduino circuit board; the R/W pin of the read/write selection port of the LCD 12864 display screen is connected with the digital pin 11 of Arduino; the data command select port RS pin of the LCD 12864 display is connected to the digital pin 12 of the Arduino circuit board.
3. The underground garage exit safety warning device for bidirectional control according to claim 2, wherein the LCD 12864 display screen is further connected with a 10K potentiometer for adjusting the brightness of the LCD 12864 display screen; the V0 pin of the LCD 12864 display screen is connected with the middle pin of the 10K potentiometer; the VCC pin of the LCD 12864 display screen is connected with the left pin of the 10K potentiometer; the GND pin of the LCD 12864 display screen is connected with the right pin of the potentiometer.
4. The underground garage exit safety warning device for two-way control of claim 1, wherein the MP3 data transmission TXD pin is connected to the digital pin 18 of the Arduino circuit board; the data receiving RXD pin is connected with a digital pin 19 pin of the Arduino circuit board; the VCC pin of MP3 is connected with the 5V pin of the Arduino circuit board; the GND pin of MP3 is connected with the GND pin of the Arduino circuit board.
5. The underground garage outlet safety warning device for bidirectional control according to claim 1, wherein the VCC pin of the ultrasonic ranging module HC-SR04 is connected with the 5V pin of the Arduino circuit board; the trigger input Trig pin is connected with the digital pin 14 of the Arduino circuit board; the Echo pin is connected with a digital pin 15 of the Arduino circuit board; the GND pin of the ultrasonic ranging module HC-SR04 is connected with the GND pin of the Arduino circuit board.
6. The underground garage outlet safety warning device for bidirectional control according to claim 1, wherein the R pin of the LED traffic light is connected with the 16 pins of the digital pin of the Arduino circuit board; the G pin of the LED traffic light is connected with the 17 pins of the digital pin of the Arduino circuit board; and the GND pin of the LED traffic light is connected with the GND pin of the Arduino circuit board.
7. The underground garage outlet safety warning device for bidirectional control according to claim 1, wherein the S pin of the first pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the first pressure sensor is connected with the GND pin of the circuit board of Arduino; the VCC pin of the first pressure sensor is connected with the 5V pin of the Arduino circuit board.
8. The underground garage exit safety warning device for two-way control according to claim 1, wherein the S pin of the second pressure sensor is connected with the analog pin A0 of the Arduino circuit board; the GND pin of the second pressure sensor is connected with the GND pin of the Arduino circuit board; the VCC pin of the second pressure sensor is connected with the 5V pin of the Arduino circuit board.
CN202223292146.7U 2022-12-08 2022-12-08 Underground garage outlet safety alarm device for bidirectional control Active CN219105606U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223292146.7U CN219105606U (en) 2022-12-08 2022-12-08 Underground garage outlet safety alarm device for bidirectional control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223292146.7U CN219105606U (en) 2022-12-08 2022-12-08 Underground garage outlet safety alarm device for bidirectional control

Publications (1)

Publication Number Publication Date
CN219105606U true CN219105606U (en) 2023-05-30

Family

ID=86453034

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223292146.7U Active CN219105606U (en) 2022-12-08 2022-12-08 Underground garage outlet safety alarm device for bidirectional control

Country Status (1)

Country Link
CN (1) CN219105606U (en)

Similar Documents

Publication Publication Date Title
CN207097250U (en) The warning of three-stage intelligent emergent is auxiliary to drive device
CN219105606U (en) Underground garage outlet safety alarm device for bidirectional control
CN110070708A (en) A kind of safety prompting system and its method of pedestrian's street crossing
CN204383385U (en) A kind of multifunctional intellectual anti-collision device for automobile
US7315235B1 (en) First warning system for automotive vehicles
CN101982638A (en) Road three-dimensional parking device based on automatic rising
CN218996168U (en) Intelligent zebra crossing system for non-lamp controlled intersection
CN210348801U (en) Non-lamp control intersection human and vehicle safety warning system
CN201835561U (en) Automatic lifting based stereoscopic parking device on road
CN203543801U (en) Parking assistance system
CN214564943U (en) Driving auxiliary system
CN210072928U (en) Parking lot backing reminding device
CN212516121U (en) Bidirectional barrier gate device
CN208122402U (en) A kind of warning garage
CN206719075U (en) A kind of car door opening indicator
CN112419747A (en) Separated intelligent urban traffic regulation and control system and regulation and control method thereof
CN220598233U (en) Intelligent transportation electron convex mirror
CN216486797U (en) Vehicle courtesy pedestrian reminding system
CN216130000U (en) Brightness self-adaptive intelligent zebra crossing capable of giving real-time early warning when pedestrians cross street
CN215801227U (en) Bridge management and control is with intelligent limit for height device
CN209804001U (en) Intelligent parking space
CN2695538Y (en) Multifunctional voice one-metre line
CN216412379U (en) Vehicle safe driving prompting device
CN210349187U (en) Intelligent warning board and system
CN211257982U (en) Parking stall reminding device that berths for road

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant