CN201153033Y - Display screen control system - Google Patents
Display screen control system Download PDFInfo
- Publication number
- CN201153033Y CN201153033Y CNU2008200738063U CN200820073806U CN201153033Y CN 201153033 Y CN201153033 Y CN 201153033Y CN U2008200738063 U CNU2008200738063 U CN U2008200738063U CN 200820073806 U CN200820073806 U CN 200820073806U CN 201153033 Y CN201153033 Y CN 201153033Y
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- Prior art keywords
- control circuit
- display screen
- circuit
- control system
- interface
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Abstract
The utility model discloses a display screen control system which comprises a signal input circuit, a control circuit connected with the signal input circuit, wherein, the output of the control circuit is connected with a display interface of a back screen via a switch converting circuit, and is directly connected with the display interface of a front screen. The input end of the switch converting circuit is also connected with a radio transmission interface. The output of the control circuit is directly connected with the switch converting circuit via a 485 converter while being connected with the switch converting circuit, and the 485 converter which is also connected between the output end of the control circuit and the display interface of the front screen. The display screen control system can control the information in a vehicle to be displayed on the display screen, thereby people who need to ride can clearly judge whether or not the vehicle has passengers. When danger condition occurs in the vehicle, the display screen control system can be controlled to alarm rapidly. The display screen control system can carry out the remote transmission in a radio transmission mode, and the long-distance radio transmission mode can be cut off, so as to be controlled by a user to transmit the preestablished information to the display screen.
Description
Technical field
The utility model relates to a kind of advertisement display, particularly relate to a kind of can be used on the taxi can display ads, a kind of display screen control system that can report to the police again.
Background technology
At present, the taxi that we are seen all is that the top outside car is provided with a taxi display lamp.Described taxi display lamp only is used to show that this car is a taxi just opening at dark, there is no other any function.And be existing taxi, think the motroist can not judge in car travels whether the passenger is arranged in its car, so very inconvenient.And, be public good and advertising with the automobile, literal and the pattern form of normally taking posted spraying etc. not change at any time, make the instantaneity of propaganda be subjected to very big restriction, therefore, also very restricted on the effect of publicity, change costs worker, time-consuming and pay very big expense during promotional content.Can not give full play to extensive, motor-driven, the advantage that diffuses information flexibly, efficiently of vehicle-mounted media.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of can be used on the taxi can display ads, a kind of display screen control system that can report to the police again.
The technical scheme that the utility model adopted is: a kind of display screen control system, include: signal input circuit, the control circuit that links to each other with signal input circuit, the output of control circuit links to each other with back screen display interface by conversion switch, screen display interface before the output of control circuit also directly connects, the input end of shown conversion switch also connects the wireless transmission interface.
The output of described control circuit, is also passed through 485 converters and is linked to each other with conversion switch with when conversion switch links to each other directly.
Also be connected with 485 converters between the output terminal of described control circuit and the preceding screen display interface.
Described signal input circuit includes ic chip 3 that links to each other with the control circuit input end and the external signal input interface J that links to each other with the control circuit input end.
Described conversion switch includes relay J m, diode D1, triode T1 and resistance R 57, wherein, the coil of relay J m and a termination power after diode D1 is in parallel, the collector of another termination triode T1, the grounded emitter of triode T1, the output terminal of base stage connection control circuit 2, base stage also connect power supply by resistance R 57; The switch of relay J m is connected between control circuit and the back screen display interface.
A kind of display screen control system of the present utility model, circuit structure is simple, can control the information in the car is presented on the display screen, and making needs the motroist whether can most clearly judge in the car that travels existing passenger.And a kind of display screen control system of the present utility model when finding dangerous situation on the car, can also be controlled rapid warning.The utility model promptly can carry out long-distance transmissions with wireless transmission method, also can by user's control, issue the predefined information of display screen according to designing the long distance wireless transmission mode of breaking.Robbed as taxi, the user can make switch switch default content is spread out of, and display screen sends distress signals.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the circuit block diagram of another embodiment of the utility model;
Fig. 3 is an integrated circuit schematic diagram of the present utility model.
Wherein:
1: signal input circuit 2: control circuit
3: conversion switch 4:GRPS interface
5: back screen display interface 6: preceding screen display interface
7:485 converter 8:485 converter
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify a kind of display screen control system of the present utility model and how to realize.
As shown in Figure 1, a kind of display screen control system of the present utility model, include: signal input circuit 1, link to each other with signal input circuit 1, receive the control circuit 2 of its signal, the output of control circuit 2 links to each other with the back screen display interface 5 that is arranged on the taxi rear portion by conversion switch 3, the output of control circuit 2 also directly connects the preceding screen display interface 6 that is arranged on the taxi front portion, the input end of shown conversion switch 3 also connects wireless transmission interface 4, as GRPS, CDMA or other radio transmission system.
As shown in Figure 2, the output of described control circuit 2, is also passed through 485 converters 7 and is linked to each other with conversion switch 3 with when conversion switch 3 links to each other directly.
The output terminal of described control circuit 2 and be arranged between the preceding screen display interface 6 of taxi front portion and also be connected with 485 converters 8.
As shown in Figure 3, described signal input circuit 1 includes the ic chip 3 and the external signal input interface J that links to each other with control circuit 2 input ends that the model that links to each other with control circuit 2 input ends is X5045.
Described external signal input interface J has 4 kinds of State Control inputs, wherein:
State Control input 1: sky is sailed;
State Control input 2: carrying;
State Control input 3: have a rest;
State Control input 4: help information.
Described control circuit 2 is to be that the single-chip microcomputer IC1 of MCU constitutes by model.
Described conversion switch 3 includes relay J m, diode D1, triode T1 and the resistance R 57 that model is DIGTIALJRC19F, wherein, the coil of relay J m and a termination power after diode D1 is in parallel, the collector of another termination triode T1, the grounded emitter of triode T1, the output terminal of base stage connection control circuit 2, base stage also connect power supply by resistance R 57; The switch of relay J m is connected between control circuit 2 and the back screen display interface 5.
Described 485 converters 7 are to be that the ic chip 2 of MAX481 constitutes by model, and described 485 converters 8 are to be that the ic chip 4 of MAX481 constitutes by model.
Described back screen display interface 5, preceding screen display interface 6 and GRPS interface 4 are to be that J1, J2 and the J3 of DB9 constitutes by model respectively.
The duty that the utility model had is as follows:
(1) normality
(1) preceding screen shows
1. sky is sailed
The signal source K1 of external signal input interface J input is that low level is input to single-chip microcomputer IC1, IC1 delivers to ic chip 4 with " sky is sailed " signal by single-chip microcomputer, be converted to the RS485 signal, screen display driver card shows " sky is sailed " at preceding screen before being sent to by preceding screen display interface J2.
2. carrying
The signal source K2 of external signal input interface J input is that low level is input to single-chip microcomputer IC1, IC1 delivers to ic chip 4 with " carrying " signal by single-chip microcomputer, be converted to the RS485 signal, screen display driver card shows " carrying " at preceding screen before being sent to by preceding screen display interface J2.
3. have a rest
The signal source K3 of external signal input interface J input is that low level is input to single-chip microcomputer IC1, IC1 delivers to ic chip 4 with " rest " signal by single-chip microcomputer, be converted to the RS485 signal, screen display driver card shows " rest " at preceding screen before being sent to by preceding screen display interface J2.
(2) the back screen shows
GPRS delivers to back screen display driver card with signal by back screen display interface J1 through JRC19F (relay J m) by GRPS interface J3 input, and screen shows the content that is received by GPRS in the back.
(2) emergency circumstance
When criminal matter such as occurring robbing, the driver can show assistance message by screen before and after the ceiling light, seek passerby's help.This kind situation is referred to as the emergency circumstance.
(1) preceding screen shows
When the emergency circumstance occurs, the driver can be by a wireless buttons (can be wired or radio remote control switch), make that the signal source K4 of external signal input interface J input is a low level, by single-chip microcomputer IC1 with help information (for example " I am robbed, and please assist to report to the police! ") signal delivers to ic chip 4, is converted to the RS485 signal, screen display driver card shows help information at preceding screen before being sent to by preceding screen display interface J2.
(2) the back screen shows
Simultaneously, the control signal that single-chip microcomputer IC1 sends is shielded the help signal that the data presented source switches to single-chip microcomputer IC1 output by JRC19F (relay J m) with the back, delivers to the back by back screen display interface J1 again and shields the display driver card, and screen shows help information in the back.
Claims (5)
1. display screen control system, it is characterized in that, include: signal input circuit (1), the control circuit (2) that links to each other with signal input circuit (1), the output of control circuit (2) links to each other with back screen display interface (5) by conversion switch (3), screen display interface (6) before the output of control circuit (2) also directly connects, the input end of shown conversion switch (3) also connects wireless transmission interface (4).
2. display screen control system according to claim 1 is characterized in that, the output of described control circuit (2), is also passed through 485 converters (7) and linked to each other with conversion switch (3) with when conversion switch (3) links to each other directly.
3. display screen control system according to claim 1 and 2 is characterized in that, also is connected with 485 converters (8) between the output terminal of described control circuit (2) and the preceding screen display interface (6).
4. display screen control system according to claim 1 is characterized in that, described signal input circuit (1) includes ic chip 3 that links to each other with control circuit (2) input end and the external signal input interface J that links to each other with control circuit (2) input end.
5. display screen control system according to claim 1, it is characterized in that, described conversion switch (3) includes relay J m, diode D1, triode T1 and resistance R 57, wherein, the coil of relay J m and a termination power after diode D1 is in parallel, the collector of another termination triode T1, the grounded emitter of triode T1, the output terminal of base stage connection control circuit (2), base stage also connects power supply by resistance R 57; The switch of relay J m is connected between control circuit (2) and the back screen display interface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200738063U CN201153033Y (en) | 2008-01-31 | 2008-01-31 | Display screen control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200738063U CN201153033Y (en) | 2008-01-31 | 2008-01-31 | Display screen control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201153033Y true CN201153033Y (en) | 2008-11-19 |
Family
ID=40128708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200738063U Expired - Fee Related CN201153033Y (en) | 2008-01-31 | 2008-01-31 | Display screen control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201153033Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774315A (en) * | 2012-07-19 | 2012-11-14 | 杭州九树网络科技有限公司 | Taxi non-vacancy and no-load display screen rotating device and operating method |
-
2008
- 2008-01-31 CN CNU2008200738063U patent/CN201153033Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774315A (en) * | 2012-07-19 | 2012-11-14 | 杭州九树网络科技有限公司 | Taxi non-vacancy and no-load display screen rotating device and operating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20100131 |