CN107167138A - A kind of intelligent Way guidance system and method in library - Google Patents

Abstract

The invention discloses an intelligent path guidance system and method for a library. The system includes a host computer, a mobile phone APP, a camera and smart glasses. The mobile phone APP is used for human-computer interaction with borrowers to obtain predetermined book information. The lens of the smart glasses also has a path display screen on the basis of displaying the real scene, and the path guidance is superimposed on the path display screen, and a miniature light source is installed on the mirror leg, which can flash at a specific frequency or code under the control of the host computer. The camera identifies the location of the borrower. The upper computer is used to determine the bookshelf information where the book is scheduled, and plan the optimal route, control the path display screen and micro light source of the smart glasses, monitor the location information of the borrower determined by the camera, and adjust the optimal route in time. The invention can allow borrowers to find required books most conveniently and provide users with the best experience of borrowing books. The invention can be generally applied to various libraries or other occasions requiring intelligent guidance, and has high portability.

Description

A library intelligent path guidance system and method

technical field

The invention belongs to the field of automation, and relates to technologies such as mobile phone APP design, indoor positioning, path planning and augmented reality, and in particular to an intelligent path guidance system and method for a library.

Background technique

As an efficient automation system, route guidance system has played a huge role in vehicle navigation and military applications. It will bring great convenience to users if the path guidance system is used in indoor areas with complex terrain, such as large shopping malls, libraries and underground parking lots.

At present, there have been some articles that propose the use of path guidance systems indoors, such as the iBeacon-based indoor path guidance system, which uses the iBeacon-based indoor path guidance system to accurately detect the moving direction of indoor users and collect context perception of user movement patterns Collect user information, provide precise guidance routes, and notify users of guidance information through message push.

The indoor positioning and path guidance system based on the iOS platform is an indoor positioning and path guidance system designed in combination with the principle of inertial navigation, and the corresponding application APP is developed based on the iOS software platform. The hardware configuration and computing power of the iOS mobile device iPhone are used in the implementation of the system. Use the accelerometer of the iPhone to detect the person's forward movement, and obtain the distance of the person's forward movement through the corresponding integral calculation. Then, use the iPhone's magnetometer to calculate the direction the person is moving forward. In the case of knowing the starting point of walking and the distance and orientation of the person, the displacement of the person is obtained, and then the person is positioned indoors. Finally, compare the movement information of the personnel with the path information stored in the iPhone in advance, and the comparison results can guide the personnel to move forward on the designated indoor path.

In general, although some design methods for indoor intelligent path guidance systems have been proposed in recent years, there is no complete and mature path guidance system that can be promoted in the library field, and the existing indoor path guidance systems The human-computer interaction function in is not detailed enough.

Contents of the invention

Aiming at the shortcomings of the existing library guidance methods, the invention provides a library intelligent path guidance system and method.

The purpose of the present invention is achieved through the following technical solutions: a library intelligent path guidance system, including a host computer, mobile phone APP, camera and smart glasses, wherein:

The mobile phone APP is used for human-computer interaction with the borrower, and obtains the book information reserved by the borrower.

The smart glasses have the function of augmented reality, and the lens also has a path display screen on the basis of displaying the real scene, and the path guide is superimposed on the path display screen to guide the borrower to find the target bookshelf; There is a miniature light source on the top, which can flash at a specific frequency or code under the control of the host computer, and is used for the camera to identify the borrower's location and transmit it to the host computer; at the same time, two miniature cameras inside and outside and a laser pointer are embedded on the frame : The outer camera is used to take pictures and scan the QR code of the book, the inner camera is used to identify the user's eye movement, and the laser pointer is used to indicate the target book.

The camera is installed on the ceiling of the library to determine the real-time location of the borrower by identifying specific frequency or coded light sources.

The host computer is used to communicate with the mobile phone APP to determine the bookshelf information of the book that the borrower has booked, and to plan the optimal route to control the path display screen and the micro light source of the smart glasses; Monitor the location information of the operator and adjust the optimal route in time.

Further, the planning of the optimal route considers the shortest route and the number of existing borrowers on the route to avoid congestion, and at the same time updates in real time according to the borrower's location.

Further, the characteristic light flashing according to a specific frequency or code is specifically:

(1) Specific frequency: the frequency of light emitted by the micro light source is different, such as different colors of visible light or even invisible light (although invisible to the naked eye, but the camera can recognize it);

(2) Specific coding: the coding of the light emitted by the micro light source is different, for example, the characteristic light flashes intermittently according to different brightness and darkness.

Further, the outer camera of the smart glasses can use a laser pointer to guide the borrower to look up or down according to the deviation between the direction directly in front of the borrower and the target book, until the correct number of layers is found, and the rough positioning is completed; After the book reader finds the correct number of layers, the outer camera recognizes the side code of the book in the captured area, calculates whether the relationship with the target book position is on the left, right or directly opposite, and activates the inner camera.

Furthermore, the camera inside the smart glasses recognizes the eye movement of the borrower, compares and judges the left-right deviation between the gaze direction and the target book, and controls the laser pointer to point to the correct position to complete fine positioning.

Further, the camera on the outside of the smart glasses, after scanning the code of the book, recognizes the basic information of the book, helping the borrower to judge whether it is the book he wants to borrow.

A library intelligent path guidance method, the method comprises the following steps:

(1) Reservation of books: Borrowers search for the books they need to borrow on the mobile APP and reserve them.

(2) Determine the location of the target bookshelf: After the borrower confirms to start borrowing books on the mobile APP, the host computer determines the location information of the bookshelf where the target book is located through the reservation information in the borrower’s mobile APP;

(3) Optimal route planning: The host computer plans the optimal route according to the borrower's current location and target location, combined with the placement of library bookshelves;

(4) Smart glasses display guidance route: display the optimal path guidance on the path display screen of the smart glasses worn by the borrower;

(5) Route monitoring and real-time update: The camera determines the real-time location of the borrower by identifying the characteristic light emitted by the micro light source of the smart glasses and transmits it to the host computer for detection. If the borrower deviates from the route, the host computer will send instructions in time Update the guidance route on the screen of the smart glasses. At the same time, the host computer will also monitor the location of existing users and new users, and update the optimal route in real time to avoid time-consuming or congestion;

(6) Target book positioning: When the borrower arrives at the target bookshelf, the outer camera of the smart glasses will use a laser pointer to guide the borrower to look up or down according to the deviation between the direction directly in front of the borrower and the target book until the borrower is found. Correct the number of layers and complete the rough positioning; after the borrower finds the correct number of layers, first, the outer camera of the glasses recognizes the side code of the book in the captured area, calculates whether the relationship with the target book position is on the left, right or right, and then starts The inner camera recognizes the eye movement, compares and judges the direction of the borrower’s gaze and the left-right deviation of the target book, uses a laser pointer to guide the borrower to find the book to the left or right until the correct position is found, and finally scans the code through the outer camera , the borrower can judge whether it is the book he wants to borrow.

(7) End of smart guidance: The host computer will prompt on the mobile APP that the borrower has arrived at the destination, and the borrower will confirm that the borrowing is successful after receiving the book and returning the smart glasses, and the guidance will end.

Further, in step 3, the planning of the optimal route considers the length of the route, the number of turns and the number of existing borrowers on the route to avoid congestion. Can be set to a path with the shortest path and the fewest turns.

Further, in step 4, the smart glasses worn by the borrower are allocated by the system according to their reservation information, and only the optimal path of the borrower is displayed and characteristic light is emitted during the borrower's use.

Further, in step 5, the positioning of the camera through characteristic light is a three-dimensional indoor positioning method, and the process is as follows:

(1) Three cameras form a group, and only recognize the frequency or coded information of a certain characteristic light during one working period;

(2) Suppose the position coordinates of the three cameras are A(x ₁ ,y ₁ ,z ₁ ), B(x ₂ ,y ₂ ,z ₂ ), C(x ₃ ,y ₃ ,z ₃ ), and the cameras are based on Characteristic light source position calculation The included angles θ _AB , θ _BC , and θ _CA between the characteristic light source O and the camera connection lines OA, OB, and OC are the angles between the characteristic light source and the three cameras, which are used in the three triangles respectively Cosine law, we can get:

AO ² +BO ² -AB ² =2AO BO cosθ _AB ,

BO ² +CO ² -BC ² =2BO CO cosθ _BC ,

CO ² +AO ² -CA ² ＝2CO AO cosθ _CA .

In the formula:

(3) The values of AO, BO, and CO can be obtained by solving the equations. There are 8 sets of solutions in total, and the complex roots and non-positive real roots are directly excluded. If the remaining solutions are different, in order to obtain the only result of positioning, call another A group of cameras is used for positioning, and the two solutions are compared to obtain a unique result.

(4) After calculating the values of AO, BO, and CO, if O is located in the △ABC plane, the solution is obviously unique, and the coordinate value of point O can be obtained; if O is not located in the △ABC plane, then there is There are two sets of solutions in the mirror position, but one set can be excluded by the incident direction of light, and the coordinate value of point O can be obtained, which is the position of the characteristic light source, which realizes the indoor three-dimensional positioning of the borrower.

Further, in step 6, after the last borrower completes the route guidance, the host computer will control the smart glasses to stop emitting characteristic light, and wait for the next borrower to use.

The beneficial effects of the present invention are:

(1) The system and method of the present invention can allow borrowers to find required books most conveniently, and provide users with the best book borrowing experience.

(2) The present invention has simple hardware requirements, only smart glasses and an indoor camera are required, and only a book-borrowing APP and a library general processor are required in software;

(3) The system and method of the present invention can be generally applied to various libraries or other occasions requiring intelligent guidance, and has high portability.

Description of drawings

Fig. 1 is a system composition diagram of the present invention.

Fig. 2 is a flow chart of the method of the present invention.

Fig. 3 is a flow chart of the indoor three-dimensional positioning of the present invention.

Fig. 4 is a schematic diagram 1 of indoor three-dimensional positioning of the present invention.

Fig. 5 is a schematic diagram 2 of indoor three-dimensional positioning of the present invention.

Fig. 6 is a working flowchart of the smart glasses of the present invention.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, an intelligent route guidance system provided by the present invention includes a host computer, a mobile phone APP, a camera and smart glasses, wherein:

The mobile phone APP is used for human-computer interaction with the borrower, and obtains the book information reserved by the borrower.

The smart glasses have the function of augmented reality, and the lens also has a path display screen on the basis of displaying the real scene, and the path guide is superimposed on the path display screen to guide the borrower to find the target bookshelf; There is a miniature light source on the top, which can flash at a specific frequency or code under the control of the host computer, and is used for the camera to identify the borrower's location and transmit it to the host computer; at the same time, two miniature cameras inside and outside and a laser pointer are embedded on the frame : The outer camera is used to take pictures and scan the QR code of the book, the inner camera is used to identify the user's eye movement, and the laser pointer is used to indicate the target book.

The camera is installed on the ceiling of the library to determine the real-time location of the borrower by identifying specific frequency or coded light sources.

The host computer is used to communicate with the mobile phone APP to determine the bookshelf information of the book that the borrower has booked, and to plan the optimal route to control the path display screen and the micro light source of the smart glasses; Monitor the location information of the operator and adjust the optimal route in time.

Further, the planning of the optimal route considers the shortest route and the number of existing borrowers on the route to avoid congestion, and at the same time updates in real time according to the borrower's location.

Further, the characteristic light flashing according to a specific frequency or code is specifically:

(1) Specific frequency: the frequency of light emitted by the micro light source is different, such as different colors of visible light or even invisible light (although invisible to the naked eye, but the camera can recognize it);

(2) Specific coding: the coding of the light emitted by the micro light source is different, for example, the characteristic light flashes intermittently according to different brightness and darkness.

Further, the outer camera of the smart glasses can use a laser pointer to guide the borrower to look up or down according to the deviation between the direction directly in front of the borrower and the target book, until the correct number of layers is found, and the rough positioning is completed; After the book reader finds the correct number of layers, the outer camera recognizes the side code of the book in the captured area, calculates whether the relationship with the target book position is on the left, right or directly opposite, and activates the inner camera.

Furthermore, the camera inside the smart glasses recognizes the eye movement of the borrower, compares and judges the left-right deviation between the gaze direction and the target book, and controls the laser pointer to point to the correct position to complete fine positioning.

Furthermore, the camera on the outside of the smart glasses can identify the basic information of the book after scanning the code of the book, and can help the borrower determine whether it is the book he wants to borrow.

As shown in Figure 2, a library intelligent path guidance method, the method comprises the following steps:

(1) Reservation of books: Borrowers search for the books they need to borrow on the mobile APP and reserve them.

(2) Determine the location of the target bookshelf: After the borrower confirms to start borrowing books on the mobile APP, the host computer determines the location information of the bookshelf where the target book is located through the reservation information in the borrower’s mobile APP;

(3) Optimal route planning: The host computer plans the optimal route according to the borrower's current location and target location, combined with the placement of library bookshelves;

(4) Smart glasses display guidance route: display the optimal path guidance on the path display screen of the smart glasses worn by the borrower;

(5) Route monitoring and real-time update: The camera determines the real-time location of the borrower by identifying the characteristic light emitted by the micro light source of the smart glasses and transmits it to the host computer for detection. If the borrower deviates from the route, the host computer will send instructions in time Update the guidance route on the screen of the smart glasses. At the same time, the host computer will also monitor the location of existing users and new users, and update the optimal route in real time to avoid time-consuming or congestion;

(6) Target book positioning: When the borrower arrives at the target bookshelf, the outer camera of the smart glasses will use a laser pointer to guide the borrower to look up or down according to the deviation between the direction directly in front of the borrower and the target book until the borrower is found. Correct the number of layers and complete the rough positioning; after the borrower finds the correct number of layers, first, the outer camera of the glasses recognizes the side code of the book in the captured area, calculates whether the relationship with the target book position is on the left, right or right, and then starts The inner camera recognizes the eye movement, compares and judges the direction of the borrower’s gaze and the left-right deviation of the target book, uses a laser pointer to guide the borrower to find the book to the left or right until the correct position is found, and finally scans the code through the outer camera , the borrower can judge whether it is the book he wants to borrow;

(7) End of smart guidance: When the borrower arrives at the target bookshelf, the host computer will prompt on the mobile APP that the borrower has arrived at the destination. End this guide.

Further, in step 3, the planning of the optimal route considers the length of the route, the number of turns and the number of existing borrowers on the route to avoid congestion. Can be set to a path with the shortest path and the fewest turns.

Further, in step 4, the smart glasses worn by the borrower are allocated by the system according to their reservation information, and only the optimal path of the borrower is displayed and characteristic light is emitted during the borrower's use.

Further, in step 5, the positioning of the camera through characteristic light is a three-dimensional indoor positioning method, as shown in Figure 3-5, the process is as follows:

(1) Three cameras form a group, and only recognize the frequency or coded information of a certain characteristic light during one working period;

(2) Suppose the position coordinates of the three cameras are A(x ₁ ,y ₁ ,z ₁ ), B(x ₂ ,y ₂ ,z ₂ ), C(x ₃ ,y ₃ ,z ₃ ), and the cameras are based on Characteristic light source position calculation The included angles θ _AB , θ _BC , and θ _CA between the characteristic light source O and the camera connection lines OA, OB, and OC are the angles between the characteristic light source and the three cameras, which are used in the three triangles respectively Cosine law, we can get:

AO ² +BO ² -AB ² =2AO BO cosθ _AB ,

BO ² +CO ² -BC ² =2BO CO cosθ _BC ,

CO ² +AO ² -CA ² ＝2CO AO cosθ _CA .

In the formula:

(3) The values of AO, BO, and CO can be obtained by solving the equations. There are 8 sets of solutions in total, and the complex roots and non-positive real roots are directly excluded. If the remaining solutions are different, in order to obtain the only result of positioning, call another A group of cameras is used for positioning, and the two solutions are compared to obtain a unique result.

(4) After calculating the values of AO, BO, and CO, if O is located in the △ABC plane, the solution is obviously unique, and the coordinate value of point O can be obtained; if O is not located in the △ABC plane, then there is There are two sets of solutions in the mirror position, but one set can be excluded by the incident direction of light, and the coordinate value of point O can be obtained, which is the position of the characteristic light source, which realizes the indoor three-dimensional positioning of the borrower.

Further, in step 6, after the last borrower completes the route guidance, the host computer will control the smart glasses to stop emitting characteristic light, and wait for the next borrower to use.

Example

The following uses a student who wants to borrow books as an example to specifically illustrate the library intelligent path guidance system and method of the present invention.

(1) Book books: The student books the borrowed books on his mobile APP before going to the library or after arriving at the library.

(2) Determination of the position of the target bookshelf: The host computer determines the position of the target bookshelf according to the received book information of the student and sends it to the mobile APP, and the student can judge whether to find the correct bookshelf based on this.

(3) Optimal route planning: The student confirms to start borrowing on the pre-booked interface, and transmits the information to the host computer. At the same time, the host computer will plan the optimal route, and control the smart glasses to display route information and emit characteristic light for camera positioning .

(4) The smart glasses display the guiding route: the student selects the corresponding smart glasses according to the borrowing number, and the planned optimal path will be displayed on the display screen of the glasses to guide the student to the target bookshelf.

(5) Route monitoring and timely update: If the student’s walking route deviates from the planned route, or there are stranded users on the route ahead that may cause congestion, the host will adjust the route in real time according to the student’s location, but still retain the original route Let students choose freely.

(6) Target book positioning: When the student arrives at the target bookshelf, the outer camera of the smart glasses is based on the deviation between the direction directly in front of the student and the book he wants to borrow. Assuming that the target book is two floors below it, the laser pointer will Direct him down to find two floors. After the student finds the correct number of layers, first, the outside of the glasses recognizes the side code of the book in the photographed area, and calculates whether the relationship with the position of the target book is on the left, right or directly opposite. Then start the inner camera at this time to identify his eye movement, compare and judge the left-right deviation between his gaze direction and the target book, assuming that the target book is at the position of the five books on the right, the laser pointer will point to the right to the fifth The location of the book. Finally, the student can judge whether it is the book he wants to borrow by scanning the code with the outside camera.

(7) End of smart guidance: When the student finds the target bookshelf according to the guidance and matches the information on the bookshelf provided on the APP, return to the front desk to return the smart glasses, and confirm on the APP in time to complete the guidance.

Claims (10)

1. the intelligent Way guidance system in a kind of library, it is characterised in that including host computer, mobile phone A PP, camera and Brilliant Eyes Mirror, wherein：

Described mobile phone A PP is used for and the person's of checking out man-machine interaction, the acquisition person's of checking out books subscription information.

Described intelligent glasses have the function of augmented reality, and its eyeglass also there is path to show on the basis of display outdoor scene Screen, the Overlapping display Way guidance on the display screen of path, for guiding the person of checking out to find target bookshelf；Filled simultaneously in its temple There is miniature, the person of checking out position can be recognized simultaneously for camera under the control of host computer by specific frequency or coding flicker Pass to host computer；Inside and outside two minisize pick-up heads and a laser pen are embedded with its picture frame simultaneously：Outside camera is used for Take pictures and scan books Quick Response Code, inner side camera is used to recognizing the eye of user emotionally condition, laser pen carries out target books Indicate.

Described camera is arranged on the ceiling in library, determines that this is borrowed by recognizing the light source of specific frequency or coding The real time position of book person.

Described host computer is used to communicate with mobile phone A PP, it is determined that bookshelf information where the person's of checking out books subscription, and cook up optimal Route, controls the path display screen and miniature of intelligent glasses；Meanwhile, the person of the checking out position that host computer is determined by camera Information monitoring simultaneously adjusts optimal route in time.

2. the intelligent Way guidance system in library according to claim 1, it is characterised in that the planning of the optimal route The person's quantity that do not checked out on shortest path, and the path is considered, it is to avoid congestion, while according to the person of checking out position real-time update.

3. the intelligent Way guidance system in library according to claim 1, it is characterised in that it is described by specific frequency or The characteristic light of flicker is encoded, is specially：

(1) specific frequency：The frequency for the light that miniature is sent is different, including different colors；

(2) specific coding：The coding for the light that miniature is sent is different, including is flashed according to different light and shades interval.

4. the intelligent Way guidance system in library according to claim 1, it is characterised in that described outside camera can According to the direction immediately ahead of the person of checking out and the deviation of target books, to guide the person of checking out to find up or down with laser pen, directly To the correct number of plies is found, coarse positioning is completed；After the person of checking out finds the correct number of plies, the figure in the captured region of outside camera identification Book side is encoded, and the relation calculated with target books position is in the left side, the right or just right, startup inner side camera.Outside Camera identifies the essential information of the books after barcode scanning is carried out to books, helps the person of checking out to determine whether oneself to want to borrow The books read.

5. the intelligent Way guidance system in library according to claim 1, it is characterised in that on the inside of described intelligent glasses The camera identification person of checking out eye emotionally condition, the left-right deviation orientation of multilevel iudge direction of gaze and target books, and control laser Pen indicates to arrive correct position, completion finely positioning.

6. a kind of intelligent Way guidance method in library, it is characterised in that this method comprises the following steps：

(1) books subscription：The person of checking out searches on mobile phone A PP to be borrowed the books taken needed for oneself and makes a reservation for.

(2) target bookshelf position is determined：The person of checking out determines after starting to check out that host computer passes through the person's of checking out mobile phone on mobile phone A PP Subscription information in APP, the positional information of bookshelf where determining target books；

(3) optimal route is planned：Host computer puts position according to the person of checking out current location and target location with reference to library bookshelf Put, cook up optimal path；

(4) route is guided in intelligent glasses display：The path for the intelligent glasses worn in the person of checking out shows the optimal road of screen display Footpath is guided；

(5) route monitoring and real-time update：The characteristic light that camera is sent by the miniature of identification intelligent glasses determines to borrow Book person real time position simultaneously passes to host computer and detected, when the person's of checking out deviation route, then will to send instruction timely for host computer Update the guide route on intelligent glasses screen.Meanwhile, host computer monitoring existing subscriber and the position Added User, real-time update is most Major path, it is to avoid time-consuming or congestion；

(6) target books are positioned：After the person of checking out arrives at target bookshelf, the outside cameras of intelligent glasses according to the person of checking out just before The direction of side and the deviation of target books, guide the person of checking out to find up or down with laser pen, complete until finding the correct number of plies Into coarse positioning；After the person of checking out finds the correct number of plies, the books side in region first captured by the outside camera identification of glasses Coding, calculate with the relation of target books position be on the left side, the right or just right, then start on the inside of camera recognize its eye Emotionally condition, the direction of gaze of the multilevel iudge person of checking out and the left-right deviation orientation of target books, with laser pen guide the person of checking out to It is left or search out to the right, until finding correct position, finally by outside camera barcode scanning, the person of checking out can decide whether for He wants the books borrowed；

(7) intelligence is guided and terminated：Host computer will point out the person of checking out to have arrived at destination on mobile phone A PP, and the person of checking out takes Book is simultaneously given back after intelligent glasses and confirms to check out success, that is, terminates this guide.

7. the intelligent Way guidance method in library according to claim 1, it is characterised in that optimal in described step 3 The planning of route considers the person's quantity that do not checked out on path length, turn number of times and the path, it is to avoid congestion.

8. the intelligent Way guidance method in library according to claim 1, it is characterised in that in described step 4, check out The intelligent glasses that person is worn are distributed according to its subscription information by system, only show that this checks out during use in the person of checking out The optimal path of person simultaneously sends characteristic light.

9. the intelligent Way guidance method in library according to claim 1, it is characterised in that in described step 5, shooting It is a kind of three-dimensional indoor orientation method that head carries out positioning by characteristic light, and process is as follows：

(1) three camera is one group, and the frequency or coding information of a certain characteristic light are only recognized during one works；

(2) position coordinates for setting three cameras is respectively A (x₁,y₁,z₁)、B(x₂,y₂,z₂)、C(x₃,y₃,z₃), camera root The angle theta between feature light source O and camera line OA, OB, OC is calculated according to typical source position_AB、θ_BC、θ_CA, as feature light source With the angle between three cameras, use the cosine law respectively in 3 triangles, can obtain：

AO²+BO²-AB²=2AO BO cos θ_AB,

BO²+CO²-BC²=2BO CO cos θ_BC,

CO²+AO²-CA²=2CO AO cos θ_CA.

In formula：

<mrow> <mi>A</mi> <mi>B</mi> <mo>=</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <msub> <mi>x</mi> <mn>1</mn> </msub> <mo>-</mo> <msub> <mi>x</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <msup> <mrow> <mo>(</mo> <msub> <mi>y</mi> <mn>1</mn> </msub> <mo>-</mo> <msub> <mi>y</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <msup> <mrow> <mo>(</mo> <msub> <mi>z</mi> <mn>1</mn> </msub> <mo>-</mo> <msub> <mi>z</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> <mo>,</mo> </mrow>

<mrow> <mi>B</mi> <mi>C</mi> <mo>=</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <msub> <mi>x</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>x</mi> <mn>3</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <msup> <mrow> <mo>(</mo> <msub> <mi>y</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>y</mi> <mn>3</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <msup> <mrow> <mo>(</mo> <msub> <mi>z</mi> <mn>2</mn> </msub> <mo>-</mo> <msub> <mi>z</mi> <mn>3</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> <mo>,</mo> </mrow>

<mrow> <mi>C</mi> <mi>A</mi> <mo>=</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <msub> <mi>x</mi> <mn>3</mn> </msub> <mo>-</mo> <msub> <mi>x</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <msup> <mrow> <mo>(</mo> <msub> <mi>y</mi> <mn>3</mn> </msub> <mo>-</mo> <msub> <mi>y</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> <msup> <mrow> <mo>(</mo> <msub> <mi>z</mi> <mn>3</mn> </msub> <mo>-</mo> <msub> <mi>z</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> <mo>.</mo> </mrow>

(3) solving equations can in the hope of AO, BO, CO numerical value, a total of 8 groups of solutions directly exclude complex root and anon-normal Real Number Roots, Remaining solution, in order to obtain the unique consequence of positioning, calls another group of camera to be positioned, compares two groups if difference Solution, draws unique consequence.

(4) after AO, BO, CO numerical value has been obtained, if O is located in △ ABC planes, solves clearly unique, O points can be obtained Coordinate value；If O is not located in △ ABC planes, there are two groups of solutions in mirror position, but one of which can pass through light Line incident direction is excluded, and can obtain the coordinate value of O points, that is, feature light source position, that is, realize the interior for the person of checking out Three-dimensional localization.

10. the intelligent Way guidance method in library according to claim 1, it is characterised in that in described step 6, when The upper person of checking out is completed after Way guidance, and host computer will control intelligent glasses to stop sending characteristic light, wait next person of checking out Use.