CN202794958U - Circuit system for controlling external device - Google Patents
Circuit system for controlling external device Download PDFInfo
- Publication number
- CN202794958U CN202794958U CN201220475147.2U CN201220475147U CN202794958U CN 202794958 U CN202794958 U CN 202794958U CN 201220475147 U CN201220475147 U CN 201220475147U CN 202794958 U CN202794958 U CN 202794958U
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- signal
- external device
- plc controller
- circuit board
- functional module
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Abstract
The utility model relates to a circuit system for controlling an external device, which comprises a circuit board and a PLC (Programmable logic Controller), wherein the circuit board is connected with the PLC; a plurality of functional modules are arranged on the circuit board; the functional modules are used for expanding a port of the PLC connected with the external device; each functional module is connected with the external device through a detachable connection manner; the PLC is used for sending a control signal to the functional modules; the functional modules are used for controlling the functional mode of the external device according to the control signal; the functional modules are further used for feeding back a signal produced by the external device to the PLC; and the PLC is used for sending out a corresponding control signal to the functional modules again according to the received signal. The utility model provides a circuit system for using a new expansion manner so that the system is small in occupied space after expansion of the PLC, low in probability of wiring failures and convenient for maintenance.
Description
Technical field
The utility model relates to a kind of Circuits System, particularly a kind of Circuits System of using the PLC controller.
Background technology
PLC controller (Programmable logic Controller, programmable logic controller (PLC)) is the electronic system of a kind of digital operation operation, aims in industrial environment to use and design.It adopts a class programmable memory, be used for its internally stored program, the actuating logic computing, sequential control, regularly, the user oriented instructions such as counting and arithmetical operation, and by numeral or analog pattern input/output various types of machineries of control or production run, be the core of Industry Control.
The PLC controller after Industry Control enterprise buys the PLC controller, is realized control function at the concrete control program of inside input generally by the special manufacturer production in the world, sale.The control port of the PLC controller in the now key industry all is the plug-in type port, so the general mode of connection is the direct lead wire wiring in the industry.
Along with the development of society, in industry-by-industry, all need to use a large amount of equipment of Circuits System control to carry out work, the PLC controller then is the wider a kind of Circuits System PLC controller of applicability; When but the number of devices that needs control was too much, the port number of PLC controller self can not satisfy actual needs, so often will increase expansion module to increase the port number of PLC controller.
And existing expansion module is to engage with the PLC controller by the mode that makes up, and the volume of each expansion module is also larger, so the expansion module that increases is more, the space that takies is also larger; The more important thing is that PLC controller and expansion module are mode and the equipment connections by wiring, be that each port is drawn a connecting line, thereby the quantity of connecting line is huge, easy wrong when causing wiring, and when equipment need to overhaul, also being difficult to find out was which root circuit goes wrong.
The utility model content
The utility model purpose is to provide a kind of Circuits System of using new extended mode, so that occupying little space after the expansion of PLC controller, the probability that wiring makes mistakes reduces, and is convenient to safeguard.
Above-mentioned Circuits System for the control external device comprises the PLC controller of circuit board, plug-in type, is connected with PLC interface on the circuit board behind the external line of the interface of described PLC controller;
Described circuit board is provided with one or more functional modules, and described functional module is used for the port that the expansion technique of PLC controller is connected with external device; Described PLC controller is sent to functional module with control signal, functional module is according to the duty of control signal control external device, and the signal feedback that functional module also produces external device is to the PLC controller, and the PLC controller sends the corresponding functional module that controls signal to again according to the signal that receives;
Described functional module comprises digital input block, digital output unit, analog input unit, simulation output unit and communication unit;
Also be provided with on the circuit board and use the interface that is connected with the PLC controller, described interface comprises address decoding module, function decoding module and interface hardware; Described interface is connected with the unit of circuit module respectively;
Also be provided with on the circuit board and use a plurality of ports that are connected with external device, described port is with digital input block, digital output unit, analog input unit and be connected the corresponding connection of output unit.
Because functional module is used for the port that the expansion technique of PLC controller is connected with external device, so functional module is equivalent to the expansion module of prior art; But functional module is located at (in fact each functional module all is circuit modules that are welded on the circuit board) on the circuit board, so the volume of each functional module must be less than the volume of existing expansion module.
And circuit board and the connected mode of equipment are generally welding or winding displacement is connected, can not have a large amount of lead-in wires, so the probability that wiring makes mistakes descends naturally greatly, and circuit board are detected more than coming conveniently to leaded the detection one by one of institute.
Further, if system can not be out of service for a long time, can deal with problems by changing the new circuit board of monoblock, and this point is that existing PLC Circuits System institute is irrealizable; Even because the PLC controller that existing PLC system more renews, but owing to need rewiring, must spend the plenty of time, nor can guarantee the accuracy of wiring.
Preferably, described digital input block is by the photoelectric coupling Isolation input.
Preferably, described digital output unit is connected with relay switch, and digital output unit is by the duty of relay switch control external device.
Because the operating voltage of external device is usually higher, and the operating voltage of Circuits System is lower, adopt photoelectric coupling isolation or relay switch, all in order to avoid high-tension electricity that Circuits System is caused damage.
Preferably, described analog input unit is connected to sensor, the analog input unit transfers to analog to digital conversion circuit with the signal that sensor produces, analog to digital conversion circuit is delivered to the PLC controller after the signal that receives is converted to digital signal, and the PLC controller sends the corresponding functional module that controls signal to according to the signal that receives;
Described D/A converting circuit receives the control signal that the PLC controller sends, and be converted into simulating signal and deliver to the simulation output unit, described simulation output unit and external device join, and the simulation output unit is according to the duty of the signal controlling external device that receives.
Preferably, described analog input unit is by the photoelectric coupling Isolation input.
Choosing, described PLC controller removably connects by socket line and circuit board; Described circuit board removably connects by connection terminal and external device.
Connect by winding displacement, connection terminal, convenient and swift, make equipment maintenance, change simpler.
Preferably, the quantity of described functional module is 5.
5 functional modules are set, be equivalent to be provided with 5 expansion modules, and under prior art, the demand that 5 expansion modules can satisfy most control system is set, be in order to satisfy the demand of most of control system so the utility model arranges 5 functional modules.
Preferably, described circuit board is provided with expansion interface, and functional module is by described expansion mouthful access or pick out Circuits System.
Because functional module is to join by expansion interface and circuit board, so that the expansion of functional module and replacing; When the interface of PLC is not enough, just can meet the demands as long as increase more functional module; When functional module breaks down, as long as the functional module that more renews just can.
Description of drawings
Fig. 1 is the utility model circuit system structure synoptic diagram;
Fig. 2 is the utility model functional module structure synoptic diagram;
Fig. 3 is the utility model numeral input block work synoptic diagram;
Fig. 4 is the utility model numeral input block structural representation;
Fig. 5 is the utility model numeral output unit work synoptic diagram;
Fig. 6 is the utility model numeral output unit structural representation;
Fig. 7 is the utility model analog input cell operation synoptic diagram;
Fig. 8 is the utility model analog input cellular construction synoptic diagram;
Fig. 9 is the utility model simulation output unit work synoptic diagram;
Figure 10 is the utility model simulation output unit structural representation;
Figure 11 is the utility model communication unit work synoptic diagram;
Figure 12 is the utility model communication unit structural representation.
Embodiment
Embodiment of the present utility model comprises circuit board and PLC controller 1 as illustrated in fig. 1 and 2, and PLC controller 1 is fixed on the circuit board 2, and the port of PLC controller 1 is by the connection (namely with functional module 3 be connected) of pluggable winding displacement with circuit board 2.
Wherein, connect by winding displacement, convenient and swift, make equipment maintenance, change simpler.
Described circuit board 2 is provided with 5 functional modules 3, and each functional module 3 is a circuit module on the circuit board 2; And each functional module 3 includes digital input block, digital output unit, analog input unit, simulation output unit, analog to digital conversion circuit, D/A converting circuit and communication unit.
Wherein, 5 functional modules 3 are set, are equivalent to be provided with 5 expansion modules, and under prior art, the demand that 5 expansion modules 3 can satisfy most control system is set, and is in order to satisfy the demand of most of control system so the utility model arranges 5 functional modules 3.
Described digital input block can connect button, pressure switch, high temperature isolating switch or fireman's switch etc., the signal of input is delivered to digital input block after isolating by photoelectricity again, the numeral input block transfers to PLC controller 1 with the signal of input, and PLC controller 1 sends the corresponding functional module 3 that controls signal to according to the signal that receives.
Described digital output unit is connected to relay switch, and relay switch and external device join, and the cut-offfing of the control signal pilot relay switch that digital output unit sends according to PLC controller 1 is with the duty of this external device 4.
The external device that wherein joins with relay switch can be the equipment such as pressure fan, air-conditioning, bactericidal lamp, dehumidifier.
Described analog input unit is connected to sensor, the signal that sensor produces is delivered to the analog input unit after isolating by photoelectricity again, the analog input unit transfers to analog to digital conversion circuit with the signal that sensor produces, analog to digital conversion circuit is delivered to PLC controller 1 after the signal that receives is converted to digital signal, and PLC controller 1 sends the corresponding functional module 3 that controls signal to according to the signal that receives.
Wherein, described sensor can be humidity temperature pickup, differential pressure pickup etc.
Described D/A converting circuit receives the control signal that PLC controller 1 sends, and be converted into simulating signal and deliver to the simulation output unit, described simulation output unit and external device join, and the simulation output unit is according to the duty of the signal controlling external device 4 that receives.
Wherein can be used for control frequency converter frequency, valve opening and closing, humidifier humidity etc. with the simulation output unit.
Described communication unit is used for communication.
Wherein the course of work of above-mentioned modules and concrete structure are shown in Fig. 3 to 12.
As shown in Figure 3, the external switch amount is delivered to digital input block through behind the photoelectric coupling, and digital input block transfers to PLC with the signal that receives again, finally by PLC the signal that receives is processed.
As shown in Figure 5, PLC is sent to digital output unit with control signal, and digital output unit passes on the signal that receives, and the signal that passes on is delivered to relay after amplifying circuit amplifies, relay turns on and off according to the signal that receives, and controls the duty of external device with this.
As shown in Figure 7, the analog input unit carries out analog to digital conversion with the signal that receives, and the signal after the conversion carries out filtering again, and filtered signal is delivered to PLC, and PLC processes the signal that receives again.
As shown in Figure 9, PLC exports control signal, and the simulation output unit transfers the signal that receives to simulating signal, and simulating signal is delivered to external equipment after amplifying.
As shown in figure 11, PLC is sent to communication unit with control signal, and communication unit transfers to the address decoding module with the signal that receives, and the address decoding module compiles the signal that receives, with the address of determining that control signal is distributed; Behind the address compilation, control signal is sent to the function decoding module, and the function decoding module compiles after control is believed, exports corresponding signal to digital output unit and simulation output unit with this; In addition, the function decoding module is delivered to input signal in numeral input block and analog input unit, the function decoding module with its compiling, transfer to the address decoding module, the address decoding module is delivered to communication unit with its compiling again, last communication unit is delivered to PLC with the signal that receives.
Wherein, above-mentioned communication unit is DIP device.
Because functional module 3 is used for the port that expansion technique of PLC controller 1 is connected with external device, so functional module 3 is equivalent to the expansion module of prior art; But functional module 3 is located on the circuit board 2, so the volume of each functional module 3 must be less than the volume of existing expansion module.
And circuit board 2 is that winding displacement is connected with the connected mode of equipment, can not have a large amount of lead-in wires, thus the probability that wiring makes mistakes naturally greatly descend, and to circuit board 2 detect more than to institute leaded detect one by one to come to get convenient.
Further, if system can not be out of service for a long time, can deal with problems by changing the new circuit board 2 of monoblock, and this point is that existing PLC Circuits System institute is irrealizable; Even because the PLC controller that existing PLC system more renews, but owing to need rewiring, must spend the plenty of time, nor can guarantee the accuracy of wiring.
In addition, circuit board is provided with expansion interface, and functional module is by described expansion mouthful access or pick out Circuits System.
Because functional module is to join by expansion interface and circuit board, so that the expansion of functional module and replacing; When the interface of PLC is not enough, just can meet the demands as long as increase more functional module; When functional module breaks down, as long as the functional module that more renews just can.
The improved protection domain that also is considered as patent on the basis of above embodiment.
Claims (8)
1. Circuits System that is used for the control external device is characterized in that: comprise the PLC controller of circuit board, plug-in type, be connected with PLC interface on the circuit board behind the external line of the interface of described PLC controller;
Described circuit board is provided with one or more functional modules, and described functional module is used for the port that the expansion technique of PLC controller is connected with external device; Described PLC controller is sent to functional module with control signal, functional module is according to the duty of control signal control external device, and the signal feedback that functional module also produces external device is to the PLC controller, and the PLC controller sends the corresponding functional module that controls signal to again according to the signal that receives;
Described functional module comprises digital input block, digital output unit, analog input unit, simulation output unit and communication unit;
Also be provided with on the circuit board and use the interface that is connected with the PLC controller, described interface comprises address decoding module, function decoding module and interface hardware; Described interface is connected with the unit of circuit module respectively;
Also be provided with on the circuit board and use a plurality of ports that are connected with external device, described port is with digital input block, digital output unit, analog input unit and be connected the corresponding connection of output unit.
2. Circuits System according to claim 1 is characterized in that: described digital input block is by the photoelectric coupling Isolation input.
3. Circuits System according to claim 1, it is characterized in that: described digital output unit is connected with relay switch, and digital output unit is by the duty of relay switch control external device.
4. Circuits System according to claim 1 is characterized in that:
Described analog input unit is connected to sensor, the analog input unit transfers to analog to digital conversion circuit with the signal that sensor produces, analog to digital conversion circuit is delivered to the PLC controller after the signal that receives is converted to digital signal, and the PLC controller sends the corresponding functional module that controls signal to according to the signal that receives;
Described D/A converting circuit receives the control signal that the PLC controller sends, and be converted into simulating signal and deliver to the simulation output unit, described simulation output unit and external device join, and the simulation output unit is according to the duty of the signal controlling external device that receives.
5. Circuits System according to claim 4 is characterized in that: described analog input unit is by the photoelectric coupling Isolation input.
6. Circuits System according to claim 1, it is characterized in that: described PLC controller removably connects by socket line and circuit board; Described circuit board removably connects by connection terminal and external device.
7. Circuits System according to claim 1, it is characterized in that: the quantity of described functional module is 5.
8. Circuits System according to claim 1, it is characterized in that: described circuit board is provided with expansion interface, and functional module is by described expansion mouthful access or pick out Circuits System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475147.2U CN202794958U (en) | 2012-09-17 | 2012-09-17 | Circuit system for controlling external device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475147.2U CN202794958U (en) | 2012-09-17 | 2012-09-17 | Circuit system for controlling external device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794958U true CN202794958U (en) | 2013-03-13 |
Family
ID=47822193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220475147.2U Expired - Lifetime CN202794958U (en) | 2012-09-17 | 2012-09-17 | Circuit system for controlling external device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902227A (en) * | 2012-09-17 | 2013-01-30 | 广州市能迪自动化设备有限公司 | Circuit system for controlling external devices |
| CN103476172A (en) * | 2013-08-23 | 2013-12-25 | 颜成宇 | Control device for optical matrix |
-
2012
- 2012-09-17 CN CN201220475147.2U patent/CN202794958U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902227A (en) * | 2012-09-17 | 2013-01-30 | 广州市能迪自动化设备有限公司 | Circuit system for controlling external devices |
| CN102902227B (en) * | 2012-09-17 | 2016-01-27 | 广州能迪能源科技股份有限公司 | A kind of Circuits System for controlling external device |
| CN103476172A (en) * | 2013-08-23 | 2013-12-25 | 颜成宇 | Control device for optical matrix |
| CN103476172B (en) * | 2013-08-23 | 2016-05-11 | 颜成宇 | A kind of control device for light matrix |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU DINENG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGZHOU CANLEAD AUTOMATION EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 511442, Guangzhou, Panyu District, South Village Road, 16-18, No. Patentee after: GUANGZHOU CANLEAD ENERGY TECHNOLOGY Co.,Ltd. Address before: 511442, Guangzhou, Panyu District, South Village Road, 16-18, No. Patentee before: Guangzhou Nengdi Automation Equipment Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |