CN109614358A - A kind of implementation method of PCB signal control circuit - Google Patents
A kind of implementation method of PCB signal control circuit Download PDFInfo
- Publication number
- CN109614358A CN109614358A CN201811600181.6A CN201811600181A CN109614358A CN 109614358 A CN109614358 A CN 109614358A CN 201811600181 A CN201811600181 A CN 201811600181A CN 109614358 A CN109614358 A CN 109614358A
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- mcu
- controller
- master controller
- control circuit
- signal control
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Information Transfer Systems (AREA)
Abstract
The present invention relates to a kind of implementation method of PCB signal control circuit, signal control circuit includes MCU master controller, isolation element, MCU from controller and MCU from the external interface of controller；MCU master controller and each MCU are respectively provided with 1 transmission channel and 1 receiving channel from controller；MCU master controller is issued broadcast singal by isolation element, and MCU passes through isolation element after being respectively received broadcast singal from controller and data are successively sent to MCU master controller；MCU master controller and MCU are transmitted from controller using UART asynchronous communication；PCB signal control circuit of the present invention is respectively provided with 1 optocoupler in MCU master controller and each MCU from the transmitting and receiving channel between controller, transmits without using data line, reduces production cost；1 pair of 1 transmitting and the receiving channel flexible cord connection mode for abandoning standard, realize 1 pair of multi-channel mode on pcb board.
Description
Technical field
The present invention relates to a kind of signal control circuit, the realization side of the asynchronous communication control circuit of especially a kind of pcb board
Method.
Background technique
The Principle of Communication of SPI (Serial Peripheral interface) Serial Peripheral Interface (SPI) is very simple, it is with principal and subordinate
Mode works, and this mode usually has a main equipment and one or more from equipment, needs at least 4 lines and all bases
Shared in the equipment of SPI, they are SDI (SerialData In) serial date transfer, SDO (SerialData Out) string
The output of row data, SCLK (Serial Clock) clock signal are generated by main equipment, and CS (Chip Select) is enabled from equipment
Signal is controlled by main equipment；The production cost of product can be improved using data line；It is logical that it is often used 1 pair 1 of standard currently on the market
Road, number of channels are limited；Some is in same transmitting and receiving channel and sets two optocouplers, increases cost；Thus we
The implementation method for having developed a kind of PCB signal control circuit passes through UART (Universal Asynchronous Receiver/
Transmitter) universal asynchronous receiving-transmitting transmitter communicates, and transmitting and receive capabilities are integrated on pcb board, reduces and is produced into
This, realizes the communication channel on pcb board more than 1 pair.
Summary of the invention
A kind of realization side of PCB signal control circuit is provided the invention aims to overcome the deficiencies in the prior art
Method.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of implementation method of PCB signal control circuit,
It is characterized by comprising following steps,
Step 1: MCU master controller and each MCU on pcb board are from the transmitting and receiving channel difference between controller
It is directly connected to by single isolation element；
Step 2: MCU master controller issues broadcast singal；
Step 3: MCU receives the broadcast singal that MCU master controller issues from controller one, and by collected signal number
It is issued according to 1；
Step 4: MCU master controller, which receives signal data 1, to be terminated, and step 5 is gone to；
Step 5: MCU receives the broadcast singal that MCU master controller issues from controller two, and by collected signal number
It is issued according to 2；
Step 6: MCU master controller, which receives signal data 2, to be terminated, and step 7 is gone to；
Step 7: MCU receives the broadcast singal that MCU master controller issues from controller three, and by collected signal number
It is issued according to 3；
Step 8: MCU master controller, which receives signal data 3, to be terminated.
Preferably, MCU described in step 1 is equipped with external interface from controller from controller at least two, each MCU,
MCU acquires signal by external interface from controller；The isolation element is optocoupler.
Preferably, MCU master controller described in step 2 passes through UART format receiving and transmitting signal, MCU master controller acquisition letter
Number time be TC, TCUnit be millisecond.
Preferably, Step 3: MCU in step 5 and step 7 is from controller one, MCU from controller two and MCU from control
Device three processed is same or different, and the transmission time slot of signal is respectively T1, T2 and T3.
Preferably, Step 4: time slot is T0 in step 6 and step 8.
Preferably, the time sequencing of signal transmission is TC, T1, T0, T2, T0, T3 and T0.
Preferably, TCLess than or equal to TC, the sum of T1, T0, T2, T0, T3 and T0 1/10.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
The implementation method of PCB signal control circuit of the present invention, the integrated circuit on PCB pass through UART asynchronous communication
Mode is respectively provided with 1 optocoupler in MCU master controller and each MCU from the transmitting and receiving channel between controller, does not use
The data line of SPI Serial Peripheral Interface (SPI) communication, reduces production cost, improves labor productivity；Abandon 1 pair of 1 hair of standard
Flexible cord interface channel mode is penetrated and received, realizes 1 pair of multi-channel mode on pcb board.
Detailed description of the invention
Attached drawing 1 is the implementation method flow chart of PCB signal control circuit of the present invention；
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
In attached drawing 1, a kind of PCB signal control circuit, including MCU master controller, isolation element, MCU are from controller and MCU
From the external interface of controller, MCU master controller corresponds to several MCU from controller, i.e. MCU can be extended from controller and
MCU from controller can with it is identical can be different, MCU master controller and MCU are from being respectively provided with a transmitting and 1 connects between controller
Channel is received, external interface is connected to the outer member of pcb board, and the MCU passes through external interface of the MCU from controller from controller
Collecting data information, MCU from controller may include MCU from controller one, MCU from controller two and MCU from controller three,
MCU is respectively equipped with external interface one, external interface two and external from controller one, MCU from controller two and MCU from controller three
Interface three；MCU master controller, MCU are respectively provided with 1 transmitting from controller three from controller two and MCU from controller one, MCU and lead to
Road and 1 receiving channel.
The MCU master controller and MCU of UART asynchronous communication from 1 pair of multi transmission channel between controller according to the following steps into
Row:
Step 1: MCU master controller and each MCU on pcb board are from the transmitting and receiving channel difference between controller
It is directly connected to by single isolation element；The MCU connects from controller equipped with outside from controller at least two, each MCU
Mouthful, MCU acquires signal by external interface from controller；The isolation element is optocoupler；
Step 2: MCU master controller issues broadcast singal；The MCU master controller passes through UART format receiving and transmitting signal,
The time that MCU master controller acquires signal is TC, the unit of TC is millisecond；
Step 3: MCU receives the broadcast singal that MCU master controller issues from controller one, and by collected signal number
It is issued according to 1；The transmission time slot of signal data is T1；
Step 4: MCU master controller, which receives signal data 1, to be terminated；Time slot is T0；
Step 5: MCU receives the broadcast singal that MCU master controller issues from controller two, and by collected signal number
It is issued according to 2；The transmission time slot of signal data is T2；
Step 6: MCU master controller, which receives signal data 2, to be terminated；Time slot is T0；
Step 7: MCU receives the broadcast singal that MCU master controller issues from controller three, and by collected signal number
It is issued according to 3；The transmission time slot of signal data is T3；
Step 8: MCU master controller, which receives signal data 3, to be terminated；Time slot is T0.
The time sequencing of signal transmission is TC, T1, T0, T2, T0, T3 and T0；TC is less than or equal to TC, T1, T0, T2, T0, T3
With the 1/10 of the sum of T0；When total time-consuming is 1s, the time of data acquisition is less than or equal to 100ms.
The rest may be inferred, has several MCU from controller, the MCU is from controller with regard to several groups of data informations of serial transmission.
The above is only specific application examples of the invention, are not limited in any way to protection scope of the present invention.All uses
Equivalent transformation or equivalent replacement and the technical solution formed, all fall within rights protection scope of the present invention.
Claims (7)
1. a kind of implementation method of PCB signal control circuit, it is characterised in that: include the following steps,
Step 1: MCU master controller and each MCU on pcb board between controller transmitting and receiving channel pass through respectively
Single isolation element is directly connected to；
Step 2: MCU master controller issues broadcast singal；
Step 3: MCU receives the broadcast singal that MCU master controller issues from controller one, and collected signal data 1 is sent out
Out；
Step 4: MCU master controller, which receives signal data 1, to be terminated, and step 5 is gone to；
Step 5: MCU receives the broadcast singal that MCU master controller issues from controller two, and collected signal data 2 is sent out
Out；
Step 6: MCU master controller, which receives signal data 2, to be terminated, and step 7 is gone to；
Step 7: MCU receives the broadcast singal that MCU master controller issues from controller three, and collected signal data 3 is sent out
Out；
Step 8: MCU master controller, which receives signal data 3, to be terminated.
2. the implementation method of PCB signal control circuit according to claim 1, it is characterised in that: MCU described in step 1 from
Controller at least two, each MCU are equipped with external interface from controller, and MCU acquires signal by external interface from controller；
The isolation element is optocoupler.
3. the implementation method of PCB signal control circuit according to claim 1, it is characterised in that: MCU master described in step 2
For controller by UART format receiving and transmitting signal, the time that MCU master controller acquires signal is TC, TCUnit be millisecond.
4. the implementation method of PCB signal control circuit according to claim 1, it is characterised in that: Step 3: step 5 and step
MCU in rapid seven is same or different from controller two and MCU from controller three from controller one, MCU, and when the transmission of signal
Gap is respectively T1, T2 and T3.
5. the implementation method of PCB signal control circuit according to claim 1, it is characterised in that: Step 4: step 6 and step
Time slot is T0 in rapid eight.
6. the implementation method of PCB signal control circuit according to claim 1, it is characterised in that: the time of signal transmission is suitable
Sequence is TC, T1, T0, T2, T0, T3 and T0.
7. the implementation method of PCB signal control circuit according to claim 6, it is characterised in that: TCLess than or equal to TC、T1、
The 1/10 of the sum of T0, T2, T0, T3 and T0.
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| CN201811600181.6A CN109614358A (en) | 2018-12-26 | 2018-12-26 | A kind of implementation method of PCB signal control circuit |
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| CN201811600181.6A CN109614358A (en) | 2018-12-26 | 2018-12-26 | A kind of implementation method of PCB signal control circuit |
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Citations (5)
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|---|---|---|---|---|
| US20120099660A1 (en) * | 2010-10-20 | 2012-04-26 | Lg Electronics Inc. | Receiving system and method for processing digital broadcast signal in the receiving system |
| CN103425611A (en) * | 2013-05-20 | 2013-12-04 | 万高(杭州)科技有限公司 | Serial communication method for field of metering |
| CN105871672A (en) * | 2016-03-22 | 2016-08-17 | 佛山市顺德区美的洗涤电器制造有限公司 | One-host multi-slave communication system and data transmission method thereof |
| CN106453383A (en) * | 2016-11-07 | 2017-02-22 | 深圳拓邦股份有限公司 | UART (universal asynchronous receiver/transmitter)-based master-slave multi-processor communication system and method |
| CN108647180A (en) * | 2018-05-28 | 2018-10-12 | 北京比特大陆科技有限公司 | A kind of arithmetic system and corresponding electronic equipment |
-
2018
- 2018-12-26 CN CN201811600181.6A patent/CN109614358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120099660A1 (en) * | 2010-10-20 | 2012-04-26 | Lg Electronics Inc. | Receiving system and method for processing digital broadcast signal in the receiving system |
| CN103425611A (en) * | 2013-05-20 | 2013-12-04 | 万高(杭州)科技有限公司 | Serial communication method for field of metering |
| CN105871672A (en) * | 2016-03-22 | 2016-08-17 | 佛山市顺德区美的洗涤电器制造有限公司 | One-host multi-slave communication system and data transmission method thereof |
| CN106453383A (en) * | 2016-11-07 | 2017-02-22 | 深圳拓邦股份有限公司 | UART (universal asynchronous receiver/transmitter)-based master-slave multi-processor communication system and method |
| CN108647180A (en) * | 2018-05-28 | 2018-10-12 | 北京比特大陆科技有限公司 | A kind of arithmetic system and corresponding electronic equipment |
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Application publication date: 20190412 |