CN201859326U - Communication equipment as well as LED (Liquid Crystal Display) controller and data control circuit thereof - Google Patents
Communication equipment as well as LED (Liquid Crystal Display) controller and data control circuit thereof Download PDFInfo
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- CN201859326U CN201859326U CN2010205044018U CN201020504401U CN201859326U CN 201859326 U CN201859326 U CN 201859326U CN 2010205044018 U CN2010205044018 U CN 2010205044018U CN 201020504401 U CN201020504401 U CN 201020504401U CN 201859326 U CN201859326 U CN 201859326U
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- 238000004891 communication Methods 0.000 title claims abstract description 15
- 239000004973 liquid crystal related substance Substances 0.000 title abstract 2
- 238000012546 transfer Methods 0.000 claims description 46
- 230000005764 inhibitory process Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides an LED (Liquid Crystal Display) controller and a data control circuit thereof. The data control circuit comprises a receiving-transmitting bus, a singlechip, an RS485 drive chip and a signal gating module, wherein the singlechip is used for transmitting data to the receiving-transmitting bus, receiving the data from the receiving-transmitting bus and transmitting a control signal; the RS485 drive chip is electrically connected with the singlechip and is used for relaying the data transmitted by the singlechip to the receiving-transmitting bus and relaying the data from the receiving-transmitting bus to the singlechip; and the signal gating module is electrically connected with the RS485 drive chip and the singlechip simultaneously and is used for responding the control signal of the singlechip and transmitting the data to the receiving-transmitting bus or receiving the data from the receiving-transmitting bus. In addition, the utility model also provides communication equipment equipped with the LED controller. By adopting the data control circuit, the communication equipment and a communication line of the LED controller can be optimized to a great degree.
Description
[technical field]
The utility model relates to the data transmission of LED display, and particularly a kind of led controller and data control circuit thereof also relate to a kind of communication facilities that uses this led controller.
[background technology]
The RS485 bus is widely used in the every field such as video monitoring, gate inhibition's intercommunication or building warning owing to its wiring is simple, reliable and stable, but, the RS485 bus adopts half-duplex operation, when transmitting data, can not receive data, therefore, all will arrange four lines in the occasion that needs Data Receiving and transmission, two receive data, and two send data.
With regard to the application of LED display, the data in the LED display transmit existing transmission reception again with regard to the RS485 bus, therefore needs to arrange four data lines, so both increased the cost on the hardware, increased the installation work amount again, moreover, the many more reliabilities that also will reduce circuit of circuit.
[summary of the invention]
Adopt four lines to cause the problem that hardware increases, the installation work amount is big for the data that solve LED display in the prior art transmit, the utility model provides a kind of control circuit of new LED display screen to solve this problem.
The technical scheme in the invention for solving the above technical problem provides a kind of led controller, and this led controller comprises transceiver bus, single-chip microcomputer and signal gating module.Wherein, single-chip microcomputer is used to send data to this transceiver bus, and is used to receive the data from this transceiver bus, and is used to send control signal; The RS485 chip for driving is electrically connected with this single-chip microcomputer, is used for data that this single-chip microcomputer of transfer sends to this transceiver bus, and be used for transfer from the data of this transceiver bus to this single-chip microcomputer; The signal gating module is electrically connected with this RS485 chip for driving, is electrically connected with this single-chip microcomputer simultaneously, is used to respond the control signal of this single-chip microcomputer and sends data to this transceiver bus or the reception data from this transceiver bus.
According to the utility model one preferred embodiment, this single-chip microcomputer comprises control port, data sending terminal mouth and Data Receiving port.Wherein, control port is used to transmit control signal to this signal gating module; The data sending terminal mouth is used to send data to this transceiver bus; The Data Receiving port is used to receive the data from this transceiver bus.
According to the utility model one preferred embodiment, this RS485 chip for driving comprises the first transfer pin set and the second transfer pin set.Wherein, the first transfer pin set is electrically connected with this data sending terminal mouth, is used for the data that this single-chip microcomputer of transfer sends; The second transfer pin set is electrically connected with this Data Receiving port, is used for the data of transfer from this transceiver bus.
According to the utility model one preferred embodiment, this signal gating module comprises the first gating port, the second gating port and gating control port.Wherein, the first gating port is electrically connected with this first transfer pin set, is used to send data to this transceiver bus; The second gating port is electrically connected with this second transfer pin set, is used to receive the data from this transceiver bus; The gating control port is electrically connected with this control port, is used to receive this control signal to carry out the corresponding selection first gating port working or the second gating port working.
The utility model also provides a kind of communication apparatus, is used for video monitoring, gate inhibition's intercommunication or building and reports to the police, and wherein, this communication facilities comprises above-mentioned led controller.
The utility model also provides a kind of data control circuit, and this data control circuit comprises transceiver bus, single-chip microcomputer and signal gating module.Wherein, single-chip microcomputer is used to send data to this transceiver bus, and is used to receive the data from this transceiver bus, and is used to send control signal; The RS485 chip for driving is electrically connected with this single-chip microcomputer, is used for data that this single-chip microcomputer of transfer sends to this transceiver bus, and be used for transfer from the data of this transceiver bus to this single-chip microcomputer; The signal gating module is electrically connected with this RS485 chip for driving, is electrically connected with this single-chip microcomputer simultaneously, is used to respond the control signal of this single-chip microcomputer and sends data to this transceiver bus or the reception data from this transceiver bus.
According to the utility model one preferred embodiment, this single-chip microcomputer comprises control port, data sending terminal mouth and Data Receiving port.Wherein, control port is used to transmit control signal to this signal gating module; The data sending terminal mouth is used to send data to this transceiver bus; The Data Receiving port is used to receive the data from this transceiver bus.
According to the utility model one preferred embodiment, this RS485 chip for driving comprises the first transfer pin set and the second transfer pin set.Wherein, the first transfer pin set is electrically connected with this data sending terminal mouth, is used for the data that this single-chip microcomputer of transfer sends; The second transfer pin set is electrically connected with this Data Receiving port, is used for the data of transfer from this transceiver bus.
According to the utility model one preferred embodiment, this signal gating module comprises the first gating port, the second gating port and gating control port.Wherein, the first gating port is electrically connected with this first transfer pin set, is used to send data to this transceiver bus.
The second gating port is electrically connected with this second transfer pin set, is used to receive the data from this transceiver bus; The gating control port is electrically connected with this control port, is used to receive this control signal to carry out the corresponding selection first gating port working or the second gating port working.
Compared with prior art, led controller of the present utility model and data control circuit thereof adopt two lines to carry out data and transmit and receive, and greatly reduce hardware cost, have simplified the installation work amount simultaneously, have improved the reliability of circuit.
[description of drawings]
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 has shown the circuit diagram according to the data control circuit of the utility model one preferred embodiment.
[embodiment]
Below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, Fig. 1 has shown the circuit diagram according to the data control circuit of the utility model one preferred embodiment.
The data control circuit of present embodiment comprises single-chip microcomputer 10, RS485 chip for driving 20, signal gating module 30 and transceiver bus 40.
Wherein, single-chip microcomputer 10 is electrically connected with RS485 chip for driving 20, signal gating module 30, is used to send data to transceiver bus 40, and is used to receive the data from transceiver bus 40, and is used to send control signal.Particularly, this single-chip microcomputer 10 comprises control port 12, data sending terminal mouth 14 and Data Receiving port 16.Wherein, this control port 12 is used to transmit control signal and is operated in reception or transmit status to this signal gating module 30 to control this signal gating module 30, this data sending terminal mouth 14 is used to send data to this transceiver bus 40, and this Data Receiving port 16 is used to receive the data (hereinafter continuing to introduce) from this transceiver bus 40.
RS485 chip for driving 20 is electrically connected with this single-chip microcomputer 10, the data that are used for these single-chip microcomputer 10 transmissions of transfer are to this transceiver bus 40, and be used for transfer from the data of this transceiver bus 40 to this single-chip microcomputer 10, promptly in data transmission procedure, carry out the work of corresponding compiling and forwarding based on the respective communication agreement.Particularly, RS485 chip for driving 20 comprises the first transfer pin set 22 and the second transfer pin set 24, wherein this first transfer pin set 22 is electrically connected with data sending terminal mouth 14, be used for the data that this single-chip microcomputer 10 of transfer sends, this second transfer pin set 24 is electrically connected with this Data Receiving port 16, is used for the data of transfer from transceiver bus 40.
Those skilled in the art understand easily, the single-chip microcomputer 10 of present embodiment can adopt the mode of time-division control to send to control signal to signal gating module 30 periodically to switch to receive and send data mode to control this signal gating module 30, for example the switching cycle of control signal gating module 30 is T, when the transmission data reach T, promptly switch strobe state, receive data, reach T after, carry out data again and send, circulate with this.
In sum, I those skilled in the art understand easily, and the data control circuit of the utility model embodiment carries out data by pair of data lines and transmits and receive, and greatly reduces hardware cost, has simplified the installation work amount simultaneously, has improved the reliability of circuit.In addition, the utility model also provides a kind of communication apparatus and led controller thereof, this led controller disposes above-mentioned data control circuit, this communication apparatus is widely used in video monitoring, gate inhibition's intercommunication or building warning etc., adopts above-mentioned data control circuit can optimize the communication line of communication facilities and led controller thereof to a great extent.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application under the situation that does not break away from spirit and scope of the present utility model.
Claims (9)
1. a led controller is characterized in that, described led controller comprises:
Transceiver bus;
Single-chip microcomputer is used to send data to described transceiver bus, and is used to receive the data from described transceiver bus, and is used to send control signal;
The RS485 chip for driving is electrically connected with described single-chip microcomputer, is used for data that the described single-chip microcomputer of transfer sends to described transceiver bus, and be used for transfer from the data of described transceiver bus to described single-chip microcomputer; And
The signal gating module is electrically connected with described RS485 chip for driving, is electrically connected with described single-chip microcomputer simultaneously, is used to respond the control signal of described single-chip microcomputer and sends data to described transceiver bus or the reception data from described transceiver bus.
2. led controller according to claim 1 is characterized in that, described single-chip microcomputer comprises:
Control port is used to transmit control signal to described signal gating module;
The data sending terminal mouth is used to send data to described transceiver bus; And
The Data Receiving port is used to receive the data from described transceiver bus.
3. led controller according to claim 2 is characterized in that, described RS485 chip for driving comprises:
The first transfer pin set is electrically connected with described data sending terminal mouth, is used for the data that the described single-chip microcomputer of transfer sends; And
The second transfer pin set is electrically connected with described Data Receiving port, is used for the data of transfer from described transceiver bus.
4. led controller according to claim 3 is characterized in that, described signal gating module comprises:
The first gating port is electrically connected with the described first transfer pin set, is used to send data to described transceiver bus;
The second gating port is electrically connected with the described second transfer pin set, is used to receive the data from described transceiver bus; And
The gating control port is electrically connected with described control port, is used to receive described control signal to carry out the corresponding selection first gating port working or the second gating port working.
5. a communication apparatus is used for video monitoring, gate inhibition's intercommunication or building and reports to the police, and it is characterized in that described communication facilities comprises any described led controller among the claim 1-4.
6. a data control circuit is characterized in that, described data control circuit comprises:
Transceiver bus;
Single-chip microcomputer is used to send data to described transceiver bus, and is used to receive the data from described transceiver bus, and is used to send control signal;
The RS485 chip for driving is electrically connected with described single-chip microcomputer, is used for data that the described single-chip microcomputer of transfer sends to described transceiver bus, and be used for transfer from the data of described transceiver bus to described single-chip microcomputer; And
The signal gating module is electrically connected with described RS485 chip for driving, is electrically connected with described single-chip microcomputer simultaneously, is used to respond the control signal of described single-chip microcomputer and sends data to described transceiver bus or the reception data from described transceiver bus.
7. data control circuit according to claim 6 is characterized in that, described single-chip microcomputer comprises:
Control port is used to transmit control signal to described signal gating module;
The data sending terminal mouth is used to send data to described transceiver bus; And
The Data Receiving port is used to receive the data from described transceiver bus.
8. data control circuit according to claim 7 is characterized in that, described RS485 chip for driving comprises:
The first transfer pin set is electrically connected with described data sending terminal mouth, is used for the data that the described single-chip microcomputer of transfer sends; And
The second transfer pin set is electrically connected with described Data Receiving port, is used for the data of transfer from described transceiver bus.
9. data control circuit according to claim 8 is characterized in that, described signal gating module comprises:
The first gating port is electrically connected with the described first transfer pin set, is used to send data to described transceiver bus;
The second gating port is electrically connected with the described second transfer pin set, is used to receive the data from described transceiver bus; And
The gating control port is electrically connected with described control port, is used to receive described control signal to carry out the corresponding selection first gating port working or the second gating port working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205044018U CN201859326U (en) | 2010-08-25 | 2010-08-25 | Communication equipment as well as LED (Liquid Crystal Display) controller and data control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205044018U CN201859326U (en) | 2010-08-25 | 2010-08-25 | Communication equipment as well as LED (Liquid Crystal Display) controller and data control circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN201859326U true CN201859326U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205044018U Expired - Fee Related CN201859326U (en) | 2010-08-25 | 2010-08-25 | Communication equipment as well as LED (Liquid Crystal Display) controller and data control circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268301A (en) * | 2013-05-30 | 2013-08-28 | 华南理工大学广州学院 | Automatic-flowing half-duplex UART interface circuit |
-
2010
- 2010-08-25 CN CN2010205044018U patent/CN201859326U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268301A (en) * | 2013-05-30 | 2013-08-28 | 华南理工大学广州学院 | Automatic-flowing half-duplex UART interface circuit |
| CN103268301B (en) * | 2013-05-30 | 2016-08-31 | 华南理工大学广州学院 | A kind of half-duplex UART interface circuit of automatic stream |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20160825 |