CN110647060A - Multi-channel switch control method - Google Patents
Multi-channel switch control method Download PDFInfo
- Publication number
- CN110647060A CN110647060A CN201810666900.8A CN201810666900A CN110647060A CN 110647060 A CN110647060 A CN 110647060A CN 201810666900 A CN201810666900 A CN 201810666900A CN 110647060 A CN110647060 A CN 110647060A
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- channel switch
- control method
- channel
- control
- switch control
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention relates to a multi-channel switch control method, belonging to the technical field of electronic application such as automatic data acquisition, automatic control, program-controlled gain amplification and the like. In a weak current system using a plurality of single-way single-control contact switches, switch contacts are very easy to oxidize and corrode under severe working environment, and system faults are more due to single-way control. The invention relates to a multi-channel switch control method, which can provide a multi-channel non-contact single-control switch for a circuit electric system, a single controller can provide multi-channel switching value output, the controller supports cascade connection, and the maximum controller can support a communication control port to control 80 channels of switching value output.
Description
Technical Field
The invention relates to a multi-channel switch control method, which is characterized in that: the single-path control multi-channel contactless switching value supports cascade connection, and can be combined into a single-path control 80-path contactless switching value at most. In order to realize the electrical automatic control, the switch is one of essential basic elements for forming the electrical connection of the circuit system of the whole machine, and the stability of the switch is related to the stability and reliability of the circuit system of the whole machine. The quality of the actual use performance of the system has important influence on the rigor and the reliability of the system, and belongs to the technical field of electronic application such as automatic data acquisition, program control gain amplification and the like.
Background
A large number of switching devices are required to be selected in an intelligent control system, and a relay control or a PLC (programmable logic controller) is adopted to control the on and off of an electromagnet in the past. The relay control is logic control combined by series and parallel connection of mechanical contacts of all electric devices, hard wire connection is adopted, the connection is more and complicated, subsequent logic modification and function increase are difficult, a large number of mechanical contacts are used in the relay control, electric arcs can be generated when the contacts are opened and closed, damage and mechanical abrasion are caused, the service life is short, the operation reliability is poor, and the maintenance is difficult. The PLC adopts the micro-electronic technology to complete the switching action by a non-contact semiconductor circuit, has the functions of numerical operation, data comparison, numerical system conversion, data transmission communication and the like, has the defect of high cost, and is suitable for single project or projects with few repeated numbers.
The switch is a large class of products in plug-in components, is one of essential basic components for forming the electrical connection of a circuit system of the whole machine, can be divided into an electronic switch and an electromechanical switch, and the electromechanical switch is mainly suitable for systems with high current and low speed switching requirements; the electronic switch is an operation unit for realizing the on-off of a circuit by an electronic device, and is suitable for a system with low current and high-speed switching requirements. The electronic switch is used to quickly switch on and off the electronic switch with large current by weak signal to directly drive the large current load, and has no contact, no spark, quick action, long service life and high reliability. The isolation of the control end and the load end is realized by the isolation device.
Disclosure of Invention
A multi-channel switch control method utilizes the self-switching characteristics of a semiconductor device to realize the non-contact switch control, has faster response and higher reliability than the common relay type contact switch, and does not have the phenomena of easy corrosion, oxidation, poor contact and the like of the contact under the severe environment. The multi-path input power supply mode is used, the risk that the large current damages the input terminal and the integrated circuit is reduced, and the interference of power supply on the integrated circuit is avoided after shunting. The electrical appliance is controlled by using a multi-channel independent single control mode, and each channel is subjected to photoelectric isolation treatment, so that the performance of the electrical control board is more stable and reliable. And command control is realized through RS485 communication. A single controller has multi-channel contactless switch control, and an address dialer is additionally arranged by the control method, so that the multi-channel switch control method can be used for multi-plate communication cascade connection, 80-channel contactless switch quantities can be formed at most, great convenience is provided for communication with an upper computer system, more switch quantity requirements are met, and the industrial application requirement of one-channel control of multi-channel use can be completely met.
The controller is provided with a 485 signal acquisition interface, can detect a stable working environment, can be applied to the fields of monitoring and detection of various sensors, can replace a Programmable Logic Controller (PLC) with high price in batch sizing products, and is stable, reliable and greatly reduced in production cost. The multi-channel switch control method is high in reliability, simple, convenient and flexible, low in cost and is used for a control system with large batch.
Drawings
Fig. 1-1, fig. 1-2 and fig. 1-3 are circuit schematic diagrams of a multi-channel switch control method of the invention.
The invention will be further described with reference to the accompanying drawings in which:
the structure of the device comprises: in the figure, 1 is a singlechip processor, 2 is an RS485 bus interface (data communication, signal acquisition and cascade interface), 3 is a multi-channel semiconductor switch device, and 4 is a multi-channel switch output interface.
According to the multichannel switch control method, a single chip processor 1 receives an upper computer instruction through an RS485 communication interface 2, after analyzing and processing an instruction signal, the single chip processor 1 commands a semiconductor switch device 3 of a corresponding channel to perform switching action, photoelectric isolation processing is performed among the channels, false switching action is avoided, and electronic devices connected with switch output interfaces 4 of the channels are driven and controlled to achieve industrial application automation.
Claims (5)
1. A multi-channel switch control method is characterized in that: the multi-channel switch control method is characterized in that a multi-channel switch is controlled through an RS485 bus interface, if the number of channels exceeds 20, at most 4 plates of cascade connection are carried out through the RS485 interface, dial addresses are set, and after a single chip processor analyzes and processes instruction signals, the single chip processor commands semiconductor devices of corresponding channels to open and close the channel switch interfaces of the semiconductor devices to drive interface connection devices so as to realize automatic control.
2. A multi-channel switch control method as claimed in claim 1, characterized in that: the contactless switch control is realized by utilizing the self-switching characteristic of the semiconductor device.
3. A multi-channel switch control method as claimed in claim 1, characterized in that: the electrical appliance is controlled by using a multi-channel independent single control mode, and each channel is subjected to photoelectric isolation treatment, so that the performance of the electrical control board is more stable and reliable.
4. A multi-channel switch control method as claimed in claim 1, characterized in that: the controller is provided with an RS485 signal communication interface to realize signal acquisition and command control; the multi-channel switch controller can be used for multi-plate cascade connection through the address dialer of the controller, 80 paths of non-contact switching values can be formed at most, the self-stable working environment can be detected, and the multi-channel switch controller can also be applied to the monitoring and detecting fields from various sensors.
5. A multi-channel switch control method as claimed in claim 1, characterized in that: through RS485 communication, for providing very big facility with the communication of upper computer system to satisfy more demands to the switching value, can satisfy and use multichannel industrial application demand of control all the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666900.8A CN110647060A (en) | 2018-06-26 | 2018-06-26 | Multi-channel switch control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666900.8A CN110647060A (en) | 2018-06-26 | 2018-06-26 | Multi-channel switch control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110647060A true CN110647060A (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810666900.8A Pending CN110647060A (en) | 2018-06-26 | 2018-06-26 | Multi-channel switch control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689410U (en) * | 2009-06-15 | 2010-12-29 | 王晓庆 | Multiplex switching value bus transmission module |
| CN202085097U (en) * | 2011-02-17 | 2011-12-21 | 博耳(宜兴)电力成套有限公司 | Intelligent controller for photovoltaic confluence box |
| CN202384834U (en) * | 2011-11-23 | 2012-08-15 | 广州东芝白云菱机电力电子有限公司 | Feeder line switch amount inspection device of DC power supply cabinet |
| CN202586901U (en) * | 2012-05-31 | 2012-12-05 | 西安科技大学 | Contactless low-voltage heavy-current ignition-pulse distributor |
| JP5650863B1 (en) * | 2014-08-06 | 2015-01-07 | 豊 今野 | Line-connected multi-path multi-pattern switch control system |
| CN206833211U (en) * | 2017-06-20 | 2018-01-02 | 安徽南瑞继远电网技术有限公司 | Multi-channel switch amount detection control circuit based on Cortex M0 frameworks |
-
2018
- 2018-06-26 CN CN201810666900.8A patent/CN110647060A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689410U (en) * | 2009-06-15 | 2010-12-29 | 王晓庆 | Multiplex switching value bus transmission module |
| CN202085097U (en) * | 2011-02-17 | 2011-12-21 | 博耳(宜兴)电力成套有限公司 | Intelligent controller for photovoltaic confluence box |
| CN202384834U (en) * | 2011-11-23 | 2012-08-15 | 广州东芝白云菱机电力电子有限公司 | Feeder line switch amount inspection device of DC power supply cabinet |
| CN202586901U (en) * | 2012-05-31 | 2012-12-05 | 西安科技大学 | Contactless low-voltage heavy-current ignition-pulse distributor |
| JP5650863B1 (en) * | 2014-08-06 | 2015-01-07 | 豊 今野 | Line-connected multi-path multi-pattern switch control system |
| CN206833211U (en) * | 2017-06-20 | 2018-01-02 | 安徽南瑞继远电网技术有限公司 | Multi-channel switch amount detection control circuit based on Cortex M0 frameworks |
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Application publication date: 20200103 |
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