CN212352048U

CN212352048U - Museum collection checking robot

Info

Publication number: CN212352048U
Application number: CN202020993344.8U
Authority: CN
Inventors: 张建政; 董易; 邹金沛; 范凯杰
Original assignee: Shanghai Sazhi Intelligent Technology Co ltd
Current assignee: Shanghai Sazhi Intelligent Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-01-15
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a museum collection checking robot, which comprises a main body, a main body frame, a chassis and a lifting device; the main body is arranged on the chassis, the main body is supported by the main body frame, and the lifting device is arranged on one side of the main body; the main body comprises a central control computer and an RFID reader-writer; the central control computer runs a central control system; the lifting device comprises an RFID antenna and a photoelectric sensor; the RFID antenna is connected with and transmits signals to the RFID reader-writer, and the photoelectric sensor is connected with and transmits signals to the central control computer. The utility model discloses a set distance sensor of RFID sensor through elevating gear improves accuracy and the real-time of the collection data of library, has solved the technical problem that a large amount of hourglass reading, positioning error can appear in reading, the location of current check robot to the intensive environment of RFID label.

Description

Museum collection checking robot

Technical Field

The utility model relates to an intelligent robot field, in particular to collection and inventory robot.

Background

With the rapid development of computer technology and artificial intelligence technology, the function and technical level of the robot are greatly improved, and the visual and tactile technologies of mobile robots and robots are typical representatives. As these technologies have advanced, the extension of the robot concept has been driven. In the 80 s, systems with sensory, thinking, decision-making and action capabilities were called intelligent robots. The concept not only guides the research and application of the robot technology, but also endows the robot technology with a huge space for the deep and wide development, and robots with various purposes such as underwater robots, space robots, air robots, ground robots, miniature robots and the like come out one after another, so that a plurality of dreams become realistic. The technology of robots (such as sensing technology, intelligent technology, control technology and the like) is diffused and infiltrated into various fields to form various new machines, namely robotized machines.

Along with the progressively realization intelligence of collection related fields such as storage, library, archives, intelligent, automatic management, intelligence check robot is in process of taking a business. However, the existing intelligent checking robot has some defects. For example, the size is too large, the cost is too high, autonomous navigation and obstacle avoidance cannot be achieved, the positioning precision during moving along the library shelf is not compensated by using various sensors, the quality of an RFID signal is possibly influenced, even a safety problem occurs, a solution is not provided for reading and positioning problems of an RFID label intensive environment, and a large amount of missed reading, large positioning errors and the like can occur in actual use.

Disclosure of Invention

In order to solve the technical problem, the utility model discloses a collection and inventory robot, the technical scheme of the utility model is implemented like this:

a collection and inventory robot comprises a main body, a main body frame, a chassis 1 and a lifting device 2; wherein,

the main body is arranged on the chassis 1, the main body is supported by the main body frame, and the lifting device 2 is arranged on one side of the main body;

the main body comprises a central control computer and an RFID reader-writer;

the RFID reader-writer is connected with and controlled by the central control computer, and the central control computer runs a central control system;

the central control system comprises an information processing module and a positioning module;

the information processing module is connected with the positioning module;

the chassis 1 comprises a motor controller, a driving motor, a driving wheel 4 and a driven wheel 9;

the driving motor is connected with the driving wheel, the lifting device and the motor controller, and the motor controller is connected with and controlled by the central control computer;

the lifting device comprises an RFID antenna and a photoelectric sensor;

the RFID antenna is connected with and transmits signals to the RFID reader-writer, and the photoelectric sensor is arranged at an adjacent position above the RFID antenna and connected with and transmits signals to the central control computer.

Preferably, the central control system further comprises an AI module;

the AI module is connected with the positioning module.

Preferably, the device further comprises a shell; the shell is made of plastics or metal sheet metal and wraps the main body frame.

Preferably, an autonomous navigation system is also included;

the autonomous navigation system comprises a laser radar, an ultrasonic distance sensor and navigation software;

the laser radar is located at the bottom of the main body and connected with the chassis, the ultrasonic distance sensor is connected with and transmits signals to the central control computer, and the navigation software runs on the central control computer.

The ultrasonic distance sensors are arranged right in front of the shell, right behind the shell, right left and right.

Preferably, the ultrasonic distance sensor comprises a first sensor and a second sensor;

the first sensors are installed right in front of and right behind the shell, the installation height is 75cm, the second sensors are installed right on the left of and right of the chassis, and the installation height is 10 cm.

Preferably, the number of the RFID antennas and the number of the photoelectric sensors are both 4, and the distance between the RFID antennas is 30 cm.

Preferably, the main body further comprises a touch screen;

the touch screen is positioned on the upper part of the main body and is connected with the central control computer.

Preferably, the lifting device comprises a synchronous belt transmission mechanism, a guide rail and a limit sensor;

the synchronous belt transmission mechanism and the guide rail are installed on the main body frame, the lifting device is connected with the main body through the guide rail and the lead screw, the limit sensor is connected with the central control computer and transmits signals to the central control computer, and the limit sensor is located at the up-and-down movement limit position of the guide rail.

Preferably, the driving motor is a servo motor.

By implementing the technical scheme of the utility model, the problems that in the prior art, autonomous navigation and obstacle avoidance cannot be realized, the positioning precision is compensated when the RFID tag moves along the library shelf without using various sensors, the quality of RFID signals is possibly influenced, even the safety problem occurs, no solutions are provided for the reading and positioning problems of the RFID tag intensive environment, and a large amount of technical problems of missed reading and large positioning error can occur in the actual use can be solved;

by implementing the technical scheme of the utility model, the precise positioning of the collection object can be realized;

the movement precision and the safety of the autonomous navigation can be improved;

the signal interference during the empty scanning can be reduced;

the reading rate and accuracy of the book RFID can be improved;

the technical effect of autonomous obstacle avoidance can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Fig. 1 is a front view of the present invention;

fig. 2 is a right side view of the present invention.

In the above drawings, the reference numerals denote:

1-a body;

2-a body frame;

3-a chassis;

4-a lifting device;

5-driving wheels;

6-driven wheel;

7-an RFID antenna;

8-a photosensor;

9-a housing;

10-laser radar;

11-an ultrasonic distance sensor;

12-touch screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A collection and inventory robot comprises a main body 1, a main body frame 2, a chassis 3 and a lifting device 4; wherein,

the main body 1 is arranged on the chassis 3, the main body 1 is supported by the main body frame 2, and the lifting device 4 is arranged on one side of the main body 1;

the main body 1 comprises a central control computer and an RFID reader-writer;

the RFID reader-writer is connected with and controlled by a central control computer, and the central control computer runs a central control system;

the information processing module is connected with the positioning module;

the chassis 3 comprises a motor controller, a driving motor, a driving wheel 5 and a driven wheel 6;

the driving motor is connected with the driving wheel 5, the lifting device 4 and the motor controller, and the motor controller is connected with and controlled by the central control computer;

the lifting device 4 comprises an RFID antenna 7 and a photoelectric sensor 8;

the RFID antenna 7 is connected with and transmits signals to the RFID reader-writer, and the photoelectric sensor 8 is arranged at the adjacent position above the RFID antenna 7 and connected with and transmits signals to the central control computer. The main body frame 2 is made of aluminum alloy, is light in material, has large internal space, and can be provided with various electronic equipment, batteries and various peripheral control circuits. The central control system of the central control computer is the software backbone of the robot. The information processing module processes various data information of the central control computer, and the positioning module is responsible for controlling the position information of the robot and analyzing the current working position of the robot by combining the position information with the information processor. The chassis 3 is used for bearing the main body 1 and the lifting device 4, and heavy facilities such as a battery driver and a motor are arranged on the chassis 3, so that the overall gravity center is stable. The driving motor provides power for the driving wheel 5, the driven wheel 6 is combined to control the motor to advance and turn, and in addition, the driving motor is connected with and controls the lifting device 4 to lift. RFID antenna 7 on elevating gear 4 reads and writes RFID label transmission signal on the library collection bookshelf to the RFID read write line, combines photoelectric sensor 8 to judge whether the place ahead has books to reduce the vacant position of bookshelf, the signal interference of the books of back.

In a preferred embodiment, the central control system further comprises an AI module; the AI module is connected with the positioning module.

In this embodiment, the RFID signal that information processing module read compares with the information in the database, carries out artificial intelligence analysis with the RFID strong and weak signal of different positions through the AI module, confirms the exact position of RFID label, and the actual state of the article that the RFID label corresponds, combines the locating module to fix a position out the actual position of collection object and miss.

In a preferred embodiment, further comprises a housing 9; the housing 9 is made of plastic or metal sheet and wraps the main body frame 2.

In the embodiment, the shell 9 is used for beautifying the appearance of the robot; secondly, can prevent dust, play the effect to the protection of each part of main part 1.

In a preferred embodiment, the system further comprises an autonomous navigation system;

the autonomous navigation system comprises a laser radar 10, an ultrasonic distance sensor 11 and navigation software;

the laser radar 10 is positioned at the bottom of the main body 1 and connected with the chassis 3, the ultrasonic distance sensor 11 is connected with and transmits signals to the central control computer, and the navigation software runs in the central control computer.

And the ultrasonic distance sensors 11 are arranged right in front of the shell 9, right behind the shell, right left and right.

In the present embodiment, the laser radar 10 scans various obstacles in front of the robot, such as a bookshelf, a person, a table, a chair, a pillar, etc., and transmits information to the central control computer, wherein the information processing system analyzes the received path information and adjusts the traveling path of the robot in combination with the map information generated by the navigation software. After the robot reaches the bookshelf position, the robot is switched to a navigation mode which takes the laser radar 10 as an auxiliary and takes the ultrasonic distance sensor 11 as a main mode, so that the distance between the robot and the bookshelf is accurately kept. The safety of goods and documents and books and the stability of RFID signal reading are ensured. The effective detection angle of the ultrasonic distance sensor 11 is 120 × 30 degrees, and obstacles such as pedestrians, tables, chairs and fences which are difficult to be distinguished by the laser radar with a low position can be effectively detected.

In a preferred embodiment, the ultrasonic distance sensor 11 comprises a first sensor and a second sensor,

the first sensor is installed in the dead ahead of shell and dead ahead and dead behind, and the mounting height is 75cm, and the second sensor is installed in the dead left side of chassis and dead right side, and the mounting height is 10 cm.

In the embodiment, the first sensor is used for detecting obstacles such as pedestrians, tables, chairs, fences and the like, and is used for navigation and obstacle avoidance; the second sensor can realize auxiliary navigation in the middle of the bookshelf.

In a preferred embodiment, the number of the RFID antennas 7 and the number of the photoelectric sensors 8 are both 4, and the distance between the RFID antennas 7 is 30 cm.

National standard's library bookshelf is 7 layers, and the layer is apart from being 30cm, and four RFID antennas 7 mutual distance are the standard layer height of a bookshelf, consequently can just in time read four layers of books label, and this design can make a round trip twice and read a bookshelf promptly, compares in single antenna, two antenna scheme efficiency is higher, compares in seven antenna schemes, and is lighter and more stable to be convenient for accomodate and carry.

In a preferred embodiment, the main body 1 further comprises a touch screen 12; the touch screen 12 is positioned on the upper part of the main body 1 and is connected with a central control computer.

In the present embodiment, the touch screen 12 may operate an inventory program installed in the central control computer, and display the inventory progress and the display statistics on the touch screen 12 for the staff to review.

In a preferred embodiment, the lifting device 4 comprises a synchronous belt transmission mechanism, a guide rail and a limit sensor;

synchronous belt drive mechanism and guide rail are installed on main body frame 2, and elevating gear 4 passes through the guide rail and is connected with main part 1 with the lead screw, and spacing sensor connects and transmits the signal to central control computer, and spacing sensor is located the up-and-down motion extreme position department of guide rail.

In the embodiment, the synchronous belt transmission mechanism has the characteristics of accurate transmission ratio, compact structure and small friction loss, can be safely used for a long time, and the limit sensor is connected with and transmits a signal to the central control computer to correct the position drift of the antenna bracket by using a return-to-zero method and perform safe limit.

In a preferred embodiment, the drive motor is a servomotor.

The servo motor can control the speed and position accuracy accurately, and can convert the voltage signal into torque and rotating speed to drive a control object. The synchronous belt transmission mechanism is driven by the servo motor, so that the lifting height of the lifting device 4 can be controlled more accurately, the lifting of the RFID antenna 7 and the photoelectric sensor 8 is more stable, the information accuracy in the checking process is improved, and the lifting noise is reduced.

When the robot works, firstly:

1. the staff clicks the starting inventory button on the touch screen 12 for the parameters of the robot such as the inventory range, the inventory speed, the inventory map, whether the robot is in night inventory and the like, and the robot starts to operate.

2. The robot goes to the first bookshelf position according to the navigation software

3. The robot can avoid the manually set forbidden area (such as a fence) and real-time obstacles detected by the laser radar 10 and the ultrasonic distance sensor 11 during the traveling process. If the robot is close to the obstacle, the information processing module provides a path modification instruction according to the received real-time path information and the navigation software and the positioning module, and the robot can be automatically prevented.

4. After the robot reaches the bookshelf position, the robot is switched to a traveling mode which takes the laser radar 10 as an auxiliary and the ultrasonic distance sensor 11 as a main mode, so that the distance between the robot and the bookshelf is accurately kept.

5. And then the bookshelf moves back and forth once along the whole row of bookshelves, and the lifting operation of the RFID antenna 7 is performed once in the period, so that the whole row of bookshelves can be checked. The RFID antenna 7 is combined with the photoelectric sensor 8 to judge whether books exist in front or not so as to reduce the signal interference of the vacant position of the bookshelf and the next book. And the AI module is combined with various indexes of the robot, such as space coordinates, RFID signal intensity, detection direction, RFID signal attenuation function and the like, so as to locate the more accurate position of the book.

6. When the inventory process is completed, the inventory robot returns to the set end position, and the inventory progress and the display statistics are displayed on the touch screen 12 for the staff to review.

Implement the technical scheme of the utility model whether there is books in the place ahead is judged through the mode that RFID antenna 7 combines photoelectric sensor 8 to reduce bookshelf vacant position, the signal interference of a back books has improved the work efficiency of robot of checking up, combines AI algorithm location to go out the actual position of collection object and the lacuna, uses the distance between the accurate maintenance of autonomous navigation system and the bookshelf. The safety of goods and documents and books is ensured, and the stability of data collection and processing of the checking robot is improved. The technical problems that in the prior art, autonomous navigation and obstacle avoidance cannot be achieved, positioning accuracy during movement along a library shelf is not compensated by using various sensors, the quality of RFID signals is possibly affected, even safety problems occur, a large amount of missed reading and large positioning errors occur in practical use are solved.

It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention, and that any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a collection inventory robot which characterized in that: comprises a main body, a main body frame, a chassis and a lifting device; wherein,

the main body is arranged on the chassis, the main body is supported by the main body frame, and the lifting device is arranged on one side of the main body;

the main body comprises a central control computer and an RFID reader-writer;

the information processing module is connected with the positioning module;

the chassis comprises a motor controller, a driving motor, a driving wheel and a driven wheel;

the lifting device comprises an RFID antenna and a photoelectric sensor;

the RFID antenna is connected with and transmits signals to the RFID reader-writer, and the photoelectric sensor is arranged at a position adjacent to the upper part of the RFID antenna and connected with and transmits signals to the central control computer.

2. The collection inventory robot of claim 1, wherein: the central control system also comprises an AI module;

the AI module is connected with the positioning module.

3. The collection inventory robot of claim 1, wherein: also includes a housing; the shell is made of plastics or metal sheet metal and wraps the main body frame.

4. The collection inventory robot of claim 3, wherein: the system also comprises an autonomous navigation system;

the laser radar is positioned at the bottom of the main body and connected with the chassis, the ultrasonic distance sensor is connected with the central control computer and transmits signals to the central control computer, and the navigation software runs in the central control computer;

5. The collection inventory robot of claim 4, wherein: the ultrasonic distance sensor comprises a first sensor and a second sensor;

the first sensors are installed right in front of the shell, right in front of the shell and right behind the shell, the installation height is 75cm, the second sensors are installed right on the left of the chassis and right of the chassis, and the installation height is 10 cm.

6. The collection inventory robot of claim 1, wherein: the number of the RFID antennas and the number of the photoelectric sensors are both 4, and the distance between the RFID antennas is 30 cm.

7. The collection inventory robot of claim 1, wherein: the main body further comprises a touch screen;

8. The collection inventory robot of claim 1, wherein: the lifting device comprises a synchronous belt transmission mechanism, a guide rail and a limit sensor;

9. The collection inventory robot of claim 1, wherein: the driving motor is a servo motor.