CN111667781A - Electronic paper display screen escape channel indication system and display method - Google Patents
Electronic paper display screen escape channel indication system and display method Download PDFInfo
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- CN111667781A CN111667781A CN202010632091.6A CN202010632091A CN111667781A CN 111667781 A CN111667781 A CN 111667781A CN 202010632091 A CN202010632091 A CN 202010632091A CN 111667781 A CN111667781 A CN 111667781A
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- 238000004891 communication Methods 0.000 claims abstract description 50
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F2013/05—Constructional details indicating exit way or orientation
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- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses an escape route indicating system of an electronic paper display screen and a display method thereof, wherein the escape route indicating system comprises an escape route indicating system main body, a control terminal and an electronic paper display system; wherein, electronic paper display system includes: the system comprises an electronic paper display screen, an intelligent communication unit, a central processing unit and an electronic paper display driving chip; the electronic paper display screen is fixed on the escape passage indicating system body, and a wireless communication connection is established between the intelligent communication unit and the control terminal and is used for communicating with the control terminal; the central processing unit is coupled with the intelligent communication unit and used for receiving the control command and generating a display command; the electronic paper display driving chip is coupled with the central processing unit and the electronic paper display screen and used for responding to the display instruction and driving the electronic paper display screen to display the escape route indication information. The system can change the escape indication direction through the wireless control system according to the requirement, thereby avoiding losing the escape opportunity due to following the fixed indication direction.
Description
Technical Field
The invention relates to the technical field of escape channel indication, in particular to an electronic paper display screen intelligent escape channel system and a display method thereof.
Background
Modern buildings have increasingly complex building structures, and particularly in large public places such as gymnasiums, exhibition centers and the like, the exits and the entrances of the large public places are very many, and escape passage indicators indicate escape directions. Because the escape directions are various, people can customize escape indication boards in various directions and place the escape indication boards in the correct escape channel indication direction, and the customization trouble is generated. More importantly, the escape indication directions are fixed and unchangeable, so that the escape indication directions are unchanged in case of closing the escape passage, and people often lose the escape opportunity along the fixed escape indication directions when encountering dangers.
Disclosure of Invention
The invention provides an intelligent escape channel system of an electronic paper display screen and a display method thereof, which can change the escape indication direction through a wireless control system according to needs so as to solve the problem that the existing escape channel indication board can only indicate a fixed direction, so that the escape direction cannot be correctly indicated in some special occasions or periods.
The invention provides the following technical scheme: in one aspect, the invention provides an electronic paper display screen escape route indicating system, which comprises: the escape route indicating system comprises an escape route indicating system main body, a control terminal used for issuing a control instruction and an electronic paper display system used for displaying escape route indicating information according to the control of the control instruction; the escape passage indication information at least comprises an escape indication direction;
the electronic paper display system includes: the system comprises an electronic paper display screen, an intelligent communication unit, a central processing unit and an electronic paper display driving chip;
the electronic paper display screen is fixedly connected with the escape route indicating system main body and is used for displaying escape route indicating information;
the intelligent communication unit is fixedly connected with the escape passage indicating system main body, is in wireless communication connection with the control terminal and is used for receiving a control instruction issued by the control terminal;
the central processing unit is fixedly connected with the escape channel indicating system main body, is coupled with the intelligent communication unit, and is used for receiving the control command issued by the control terminal through the intelligent communication unit and sending a display command;
the electronic paper display driving chip is fixed on the escape channel indication system main body, is coupled with the central processing device and the electronic paper display screen, and is used for responding to a display instruction sent by the central processing device and driving the electronic paper display screen to display escape channel indication information.
Further, the electronic paper display screen is a bistable electronic paper display screen.
Furthermore, the display medium of the electronic paper display screen is color electronic paper with the display effect matched with the escape route indicating system main body.
Furthermore, the display mode of the electronic paper display screen is segment display.
Further, the segmented display includes: the display electrodes of the electronic paper display screen comprise a plurality of independent electrodes which are divided based on the overlapped escape display patterns, and the escape channel indication information is displayed by combining the independent electrodes.
Further, the electronic paper display screen further includes: and the dot matrix display area is used for displaying the identification code, and the identification code is used for identifying the position information of the electronic paper display system.
Further, the control terminal is at least one of a mobile phone and a computer.
Further, the communication mode between the intelligent communication unit and the control terminal comprises: bluetooth communication, ZigBee communication and Wi-Fi communication.
Further, an SPI or IIC bus is arranged between the central processing unit and the electronic paper display driving chip.
On the other hand, based on the above electronic paper display screen escape route indication system, the invention also provides a display method of the electronic paper display screen escape route indication system, which comprises the following steps:
the control terminal generates an identification code corresponding to the electronic paper display system, wherein the identification code comprises the direction information of an escape exit at the position of the electronic paper display system;
the control terminal sends the identification code to a corresponding intelligent communication unit of the electronic paper display system;
the central processing unit coupled with the intelligent communication unit acquires the information of the identification code through the intelligent communication unit and generates a display instruction based on the information of the identification code; the display instruction comprises escape channel indication information; the escape passage indication information at least comprises an escape indication direction;
and the electronic paper display driving chip coupled with the central processing device acquires the display instruction generated by the central processing device and drives the electronic paper display screen to display the escape passage indication information according to the display instruction.
According to the intelligent escape channel system of the electronic paper display screen, the escape indication direction can be changed through the wireless control system according to needs, so that the escape opportunity lost due to the fact that the fixed indication direction is followed is avoided.
Meanwhile, the electronic paper display screen is used as a display bearing unit of the intelligent escape channel indicator, has the advantages of power consumption only when the display content is refreshed, no power consumption when the display content is kept unchanged, good contrast, full visual angle and the like, and can realize the display of the intelligent escape channel indication information with very low power consumption.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of an electronic paper display screen intelligent escape route indicating system according to an embodiment of the present invention;
fig. 2 is an effect diagram of an electronic paper display screen displaying escape route indication information according to an embodiment of the present invention;
fig. 3 is a flowchart of a display method of an escape route indication system of an electronic paper display screen according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment, as shown in fig. 1, a block diagram of an electronic paper display screen intelligent escape route indicating system is shown.
The system comprises: the escape passage indicating system comprises an escape passage indicating system main body, an electronic paper display screen and a control terminal;
the control terminal is used for issuing a control instruction, and the control instruction is used for controlling the display of the escape passage indication information; the control terminal is one or more of a mobile phone and a computer, and completes information interaction with the electronic paper display system.
The escape passage indication system main body and the electronic paper display screen jointly form an escape passage indication board, and the escape passage indication board can be arranged at an escape passage at any position and used for indicating indication information of the escape passage. The control terminal can control one or more escape passage indicators.
The electronic paper display system is used for displaying escape route indication information according to control of the control instruction; the escape passage indication information at least comprises an escape indication direction; but also patterns of passage, prohibition, portrait, etc.
The electronic paper display system includes: the system comprises an electronic paper display screen, an intelligent communication unit, a central processing unit and an electronic paper display driving chip;
the electronic paper display screen is fixedly connected with the escape route indicating system main body and is used for displaying escape route indicating information; the intelligent communication unit is fixedly connected with the escape passage indicating system main body, is in wireless communication connection with the control terminal and is used for receiving a control instruction issued by the control terminal; the central processing unit is fixedly connected with the escape route indicating system main body, is coupled with the intelligent communication unit and is used for receiving the control command issued by the control terminal through the intelligent communication unit and sending a display command; the electronic paper display driving chip is fixed on the escape channel indication system main body, is coupled with the central processing device and the electronic paper display screen, and is used for responding to a display instruction sent by the central processing device and driving the electronic paper display screen to display escape channel indication information.
When the intelligent electronic paper display screen is implemented specifically, the electronic paper display screen is fixed on the escape route indicating system body, the intelligent communication unit, the central processing unit and the electronic paper display driving chip are all arranged on the back of the electronic paper display screen, and a wireless communication connection is established between the intelligent communication unit and the control terminal and is used for communicating with the control terminal and receiving a control instruction issued by the control terminal; the central processing unit is coupled with the intelligent communication unit and used for receiving the control instruction issued by the control terminal through the intelligent communication unit and generating a display instruction based on the control instruction; the electronic paper display driving chip is coupled with the central processing device and the electronic paper display screen and used for responding to a display instruction sent by the central processing device and driving the electronic paper display screen to display the escape channel indication information.
The electronic paper display screen is preferably a bistable electronic paper display screen, the bistable electronic paper display screen can save electric quantity due to the characteristic of power consumption when only the display information needs to be changed, and due to the characteristics of the bistable electronic paper display screen, the electronic paper can only need a small external power supply or an external power supply when the display information needs to be changed on the electronic paper display screen, so that the intelligent escape channel indicating system is ensured, the energy consumption is lower, a battery can be used as the power supply, and the electronic paper display screen is convenient to install in buildings or venues.
The display medium of the electronic paper display screen is preferably colored electronic paper with the display effect matched with the escape route indicating system main body, such as green and white electronic paper.
The display mode of the electronic paper display screen is preferably a segment display. The specific display process may be: and based on the overlapped escape display pattern, the display electrode of the electronic paper display screen is divided into a plurality of independent electrodes, and the escape channel indication information is displayed by combining the independent electrodes. Compared with a display mode of displaying any needed graph by using a full dot matrix product, the sectional display in the embodiment of the invention has the advantages of low cost, small data transmission quantity and low requirement on system configuration.
The central processing Unit is preferably a Microcontroller Unit (MCU) of model STM32 for performing core processing functions.
The communication mode between the intelligent communication unit and the control terminal selects one of Bluetooth communication, ZigBee communication and Wi-Fi communication, and the control instruction of the control terminal is received in a wireless communication mode.
The optimal model of the electronic paper display driving chip is SSD1627, and an SPI or IIC bus is arranged between the electronic paper display driving chips of the central processing unit to complete information interaction between the electronic paper display driving chips and the central processing unit.
According to the intelligent escape channel system of the electronic paper display screen, the escape indication direction can be changed through the wireless control system according to needs, so that the possibility of escape is avoided being lost due to the fact that the fixed indication direction is followed.
Meanwhile, the electronic paper display screen is used as a display bearing unit of the intelligent escape channel indicator, has the advantages of power consumption only when the display content is refreshed, no power consumption when the display content is kept unchanged, good contrast, full visual angle and the like, and can realize the display of the intelligent escape channel indication information with very low power consumption.
In another embodiment, one control terminal can control a plurality of escape route indicators, for the convenience of control, each escape route indicator is identified by a respective corresponding identification code, during specific control, the control terminal can generate an identification code corresponding to the escape route indicator to be controlled, and control of displaying escape route indication information on the escape route indicator to be controlled is realized based on the identification code. Correspondingly, besides normal escape instructions in all directions, the electronic paper display screen also has a dot matrix display area capable of displaying the identification code of the unique position information of the escape channel indicator.
Based on the intelligent escape route indicating system, the invention also provides a display method of the escape route indicating system of the electronic paper display screen.
Fig. 3 is a flowchart illustrating a display method of an escape route indication system of an electronic paper display screen according to an embodiment of the present application. The structure of the escape route indication system of the electronic paper display screen can be seen in the above embodiments, and is not described herein again.
The display method comprises the following steps:
s301, the control terminal generates an identification code corresponding to the electronic paper display system.
The identification code comprises escape exit azimuth information of the position of the electronic paper display system.
And S302, the control terminal sends the identification code to the corresponding intelligent communication unit of the electronic paper display system.
And S303, the central processing unit coupled with the intelligent communication unit acquires the information of the identification code through the intelligent communication unit and generates a display instruction based on the information of the identification code.
Wherein the display instruction comprises escape channel indication information; the escape route indication information at least comprises an escape indication direction.
S304, an electronic paper display driving chip coupled with the central processing unit acquires the display instruction generated by the central processing unit and drives an electronic paper display screen to display the escape route indication information according to the display instruction.
In addition, after the information of the identification code is read by the code reading equipment, the information in the identification code is uploaded to the control terminal. The content to be displayed is input into an upper computer system or an Application program (APP) in a control terminal in several fixed modes, an operator can select the mode in the APP or the upper computer, wherein the content to be modified can be input through the APP or a window of the upper computer, and the size and the layout of the window are automatically adjusted by simulating an actual display effect through a content input window. After having set up corresponding mode and size in control terminal, the information input that will correspond the passageway sign of fleing is to APP or host computer in, the automatic identification code that generates, and transmit to the electron paper display system in, external power source inserts this moment, the signal that intelligent communication unit received control terminal sent, and handle the back through central processing unit, according to the identification code passageway instruction information that will flee shows in the electron paper display screen, the outage can this moment, the electron paper display screen is because the characteristic of its bistable state, the content that keeps showing that can not have the consumption, when the instruction direction is fleed in needs change, only need can be with information transmission to control terminal on through the host computer system, can change the demonstration instruction direction rapidly.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An electronic paper display screen escape route indicating system, characterized in that the system comprises:
the escape route indicating system comprises an escape route indicating system main body, a control terminal used for issuing a control instruction and an electronic paper display system used for displaying escape route indicating information according to the control of the control instruction; the escape passage indication information at least comprises an escape indication direction;
the electronic paper display system includes: the system comprises an electronic paper display screen, an intelligent communication unit, a central processing unit and an electronic paper display driving chip;
the electronic paper display screen is fixedly connected with the escape route indicating system main body and is used for displaying escape route indicating information;
the intelligent communication unit is fixedly connected with the escape passage indicating system main body, is in wireless communication connection with the control terminal and is used for receiving a control instruction issued by the control terminal;
the central processing unit is fixedly connected with the escape channel indicating system main body, is coupled with the intelligent communication unit, and is used for receiving the control command issued by the control terminal through the intelligent communication unit and sending a display command;
the electronic paper display driving chip is fixed on the escape channel indication system main body, is coupled with the central processing device and the electronic paper display screen, and is used for responding to a display instruction sent by the central processing device and driving the electronic paper display screen to display escape channel indication information.
2. The system as claimed in claim 1, wherein the electronic paper display screen is a bistable electronic paper display screen.
3. The system as claimed in claim 1, wherein the display medium of the electronic paper display screen is a color electronic paper with a display effect matching with the main body of the escape path indicating system.
4. The system as claimed in claim 1, wherein the electronic paper display screen is displayed in a segment display manner.
5. The electronic paper display screen escape route indicating system of claim 4, wherein the segment display comprises: the display electrodes of the electronic paper display screen comprise a plurality of independent electrodes which are divided based on the overlapped escape display patterns, and the escape channel indication information is displayed by combining the independent electrodes.
6. The electronic paper display screen escape route indicating system of claim 1, wherein the electronic paper display screen further comprises: and the dot matrix display area is used for displaying the identification code, and the identification code is used for identifying the position of the electronic paper display system.
7. The system as claimed in claim 1, wherein the control terminal is at least one of a mobile phone and a computer.
8. The system as claimed in claim 1, wherein the communication mode between the intelligent communication unit and the control terminal comprises: bluetooth communication, ZigBee communication and Wi-Fi communication.
9. The system as claimed in claim 1, wherein an SPI or IIC bus is provided between the central processing unit and the electronic paper display driving chip.
10. The method for displaying an escape route indication system of an electronic paper display screen as claimed in any one of claims 1 to 9, wherein the method comprises:
the control terminal generates an identification code corresponding to the electronic paper display system, wherein the identification code comprises the direction information of an escape exit at the position of the electronic paper display system;
the control terminal sends the identification code to a corresponding intelligent communication unit of the electronic paper display system;
the central processing unit coupled with the intelligent communication unit acquires the information of the identification code through the intelligent communication unit and generates a display instruction based on the information of the identification code; the display instruction comprises escape channel indication information; the escape passage indication information at least comprises an escape indication direction;
and the electronic paper display driving chip coupled with the central processing device acquires the display instruction generated by the central processing device and drives the electronic paper display screen to display the escape passage indication information according to the display instruction.
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| CN202010632091.6A CN111667781A (en) | 2020-07-03 | 2020-07-03 | Electronic paper display screen escape channel indication system and display method |
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| CN202010632091.6A CN111667781A (en) | 2020-07-03 | 2020-07-03 | Electronic paper display screen escape channel indication system and display method |
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| CN206271138U (en) * | 2016-12-07 | 2017-06-20 | 深圳市富思源智慧消防股份有限公司 | A kind of fire-fighting is taken refuge guidance system |
| CN109640490A (en) * | 2017-12-31 | 2019-04-16 | 湖南汇博电子科技股份有限公司 | Fire disaster escaping indicating means and system |
| CN208014349U (en) * | 2018-04-28 | 2018-10-26 | 电子科技大学中山学院 | Information display system based on electrophoresis electronic paper |
| CN110349516A (en) * | 2019-08-14 | 2019-10-18 | 赵思锦 | A kind of electronic-paper display screen intelligence chest card |
| CN212541812U (en) * | 2020-07-03 | 2021-02-12 | 大连龙宁科技有限公司 | Electronic paper display screen escape passage indicating system |
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