CN210835696U - Expansion IO output device - Google Patents
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- CN210835696U CN210835696U CN201921849044.6U CN201921849044U CN210835696U CN 210835696 U CN210835696 U CN 210835696U CN 201921849044 U CN201921849044 U CN 201921849044U CN 210835696 U CN210835696 U CN 210835696U
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Abstract
The utility model discloses an extension IO output device, include: the main control module is provided with an output bus; the connecting module is electrically connected with the output bus bar to receive the control signal; the communication dial switch is electrically connected with the connecting module to receive the control signal and output a communication link signal; the address dial switch is used for forming and sending a configuration address signal; the IO expander is electrically connected with the communication dial switch and the address dial switch to receive the communication link signal and the configuration address signal and output a selection signal; the driving module is electrically connected to the IO expander to receive the selection signal and send a driving signal; the output interface is electrically connected with the driving module to receive the driving signal and select a control signal corresponding to the output interface to access the main control module. The corresponding selection signal is formed according to the communication link signal and the configuration address signal, and the driving module drives the corresponding output interface to send the control signal according to the selection signal, so that the expansion of the output interface is realized, and the driving and the control of more peripheral equipment are met.
Description
Technical Field
The utility model belongs to the technical field of automated control's technique and specifically relates to an extension IO output device is related to.
Background
At present, the PLC, a programmable Logic Controller (Progr, an extended IO output device mm, an extended IO output device ble Logic Controller, PLC for short) is widely used in automation in the field of industrial control. The programmable controller is modularly assembled by an internal CPU, an instruction and data memory, an input/output unit, a power module, a digital analog unit and the like. The user can edit the corresponding user program according to the requirement to meet different automatic production requirements. But with high costs, the benefit is not obvious, if with the multi-functional demand that coexists of PLC control will greatly increase the cost of this equipment in same equipment, anchor clamps, tool, shielded cell, also because the space size of equipment needs to consider the variety and the degree of difficulty of mounting means equally.
In practical applications, a large or medium-sized control system often has to be considered, and in this time, a lot of loads need to control driving, and it is obvious that a main board or a main module is difficult to meet the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an extension IO output device can extend a plurality of output interface to satisfy the signal transmission of daily medium and large-scale observing and controlling project system.
In a first aspect, an embodiment of the present invention provides an extended IO output device: an extended IO output device comprising:
the master control module is connected with an output bus bar and sends a control signal through the output bus bar;
the connecting module is electrically connected with the output bus bar to receive a control signal;
the communication dial switches are electrically connected with the connecting module to receive the control signals and select different communication link signals according to the control signals;
an address dial switch for forming and transmitting a configuration address signal;
the IO expander is electrically connected with the communication dial switch and the address dial switch to receive the communication link signal and the configuration address signal and output a selection signal;
the driving module is electrically connected to the IO expander to receive a selection signal and send a driving signal;
and the output interface is electrically connected with the driving module to receive the driving signal and select a control signal corresponding to the output interface and accessed to the main control module.
The utility model discloses an extension IO output device has following beneficial effect at least: the IO expander outputs a selection signal according to a communication link signal of the communication dial switch and a configuration address signal of the address dial switch, and the driving module controls the corresponding output interface to drive according to the selection signal so as to output a control signal of the main control module, so that the rapid expansion of an output port is realized, the running speed of the main control module is not influenced, and the drive and control of more peripheral equipment are met.
According to the utility model discloses an extension IO output device of other embodiments, kind extension IO output device, its characterized in that still includes opto-coupler isolation module, opto-coupler isolation module electricity connect in the IO expander with between the drive module with receive selection signal and general sword cutting edge of a sword pulse signal among the control signal that main control module sent keeps apart.
According to the utility model discloses an extension IO output device of other embodiments, an extension IO output device still include the filter module, the filter module electricity connect in between opto-coupler isolation module and the drive module with will high frequency pulse signal filtering among the control signal that main control module sent.
According to the utility model discloses an extension IO output device of other embodiments, an extension IO output device, a serial communication port, still include indicating module, indicating module electricity connect in drive module is in order to receive drive signal and output indication signal.
According to the utility model discloses an extension IO output device of other embodiments, the opto-coupler isolation module includes a plurality of opto-coupler isolation units, the opto-coupler isolation unit includes: the device comprises a first isolation resistor, a second isolation resistor, an acceleration resistor, a photoelectric coupler, a first isolation capacitor and a second isolation capacitor;
one end of the first isolation resistor is connected with a power supply, and the other end of the first isolation resistor is connected with a first input end of the photoelectric coupler;
one end of the second isolation resistor is connected with the first output end of the photoelectric coupler, and the other end of the second isolation resistor is connected with a power supply;
one end of the acceleration resistor is connected with a power supply, and the other end of the acceleration resistor is connected with a second input end of the photoelectric coupler and the IO expander;
one end of the first isolation capacitor is connected between the second isolation resistor and the first output end of the photoelectric coupler, and the other end of the first isolation capacitor is grounded;
one end of the second isolation capacitor is connected with the second output end of the photoelectric coupler and the driving module, and the other end of the second isolation capacitor is grounded.
According to the utility model discloses an extension IO output device of other embodiments, the filtering module includes a plurality of filtering units, filtering unit includes: the filter capacitor, the filter resistor and the filter diode;
one end of the filter capacitor is connected with the drive module and the second output end of the photoelectric coupler, and the other end of the filter capacitor is connected with the drive module;
one end of the filter resistor is connected with one end of the drive module and one end of the filter resistor, and the other end of the filter resistor is grounded;
the positive pole of the filter diode is connected with the driving module and the output interface, and the negative pole of the filter diode is connected with the power supply.
According to another embodiment of the present invention, the indication module includes a plurality of indication units, and each indication unit includes an indication resistor and a light emitting diode;
one end of the indicating resistor is connected with a power supply, and the other end of the indicating resistor is connected with the anode of the light-emitting diode;
and the cathode of the light emitting diode is connected with the output interface.
According to another embodiment of the present invention, the driving module includes a plurality of driving units, and each driving unit includes a MOS transistor;
the grid electrode of the MOS tube is connected with the second output end of the photoelectric coupler;
the drain electrode of the MOS tube is connected with the output interface;
and the source electrode of the MOS tube is grounded.
According to the utility model discloses an extension IO output device of other embodiments, the model of IO expander is TCA 9535.
Drawings
Fig. 1 is a block diagram of an embodiment of an extended IO output device according to the present invention;
fig. 2 is a schematic circuit diagram of a connection module in an embodiment of an extended IO output device according to the present invention;
fig. 3 is a schematic circuit diagram of a communication dial switch and an address dial switch in an embodiment of an extended IO output device;
fig. 4 is a schematic circuit diagram of an IO expander in an embodiment of an extended IO output device of the present invention;
fig. 5 is a schematic circuit diagram of an opto-isolator module in an embodiment of an extended IO output device;
fig. 6 is a schematic circuit diagram of an optocoupler isolated connection module in an embodiment of an extended IO output device of the present invention;
fig. 7 is a schematic circuit diagram of a driving module and a filtering module in an embodiment of an extended IO output device according to the present invention;
fig. 8 is a schematic circuit diagram of an indicating module in an embodiment of an extended IO output device.
Reference numerals: 100. a main control module; 200. a connection module; 300. a communication dial switch; 400. an address dial switch; 500. an IO expander; 600. a drive module; 700. an output interface; 800. an opto-coupler isolation module; 900. a filtering module; 110. and indicating the module.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Referring to fig. 1, the embodiment of the utility model discloses an extension IO output device, include: the intelligent control system comprises a main control module 100, a connection module 200, a plurality of communication dial switches 300, an address dial switch 400, an IO expander 500, a driving module 600 and an output interface 700, wherein the main control module 100 is provided with an output bus, the main control module 100 sends out a control signal in the main control module 100 through the output bus, and the connection module 200 is connected with the output bus to receive and transmit the control signal; the plurality of communication dial switches 300 are electrically connected with the connection module 200 to receive the control signals and select different communication link signals according to the control signals; the address dial switch 400 is used to form and transmit a configuration address signal; the IO extender 500 is electrically connected to the plurality of communication dial switches 300 and the address dial switch 400 to receive the communication link signal and the configuration address signal and output a selection signal; the driving module 600 is electrically connected to the IO extender 500 to receive the selection signal and output the driving signal, the output interface 700 is electrically connected to the driving module 600 to receive the driving signal, drives the corresponding output interface 700 to start according to the driving signal so that the output interface 700 sends out a control signal corresponding to the main control module 100, wherein the control signal comprises a preset program signal and an output control signal, the preset program signal is mainly used for controlling a communication link signal and a configuration address signal between the communication dial switch 300 and the address dial switch 400, the IO extender 500 receives the communication link signal and the configuration address signal to form a selection signal, the selection signal is used to correspondingly select which output interface 700 to transmit the output control signal, and then the driving module 600 drives the corresponding output interface 700 to start transmitting the control signal, in this way, only the preset program needs to be set, and the corresponding output interfaces 700 can be selected one by one according to the preset program to send the control signal. A plurality of output extensions can be realized without affecting the operating efficiency of the main control module 100, and it can be ensured that a plurality of peripheral devices are centralized on one main control module 100 for control.
The utility model provides an extension IO output device still includes opto-coupler isolation module 800, filtering module 900 and indicating module 110, the electrical connection IO expander 500 of opto-coupler isolation module 800 is in order to keep apart the sword pulse signal among the control signal that main control module 100 sent between drive module 600, filtering module 900 electricity is connected between opto-coupler isolation module 800 and drive module 600 in order to filter the high frequency pulse signal among the control signal that main control module 100 sent, indicating module 110 electricity is connected in drive module 600 in order to receive drive signal and output instruction signal, the sword pulse signal of control signal is kept apart through opto-coupler isolation module 800, filtering module 900 filters the high frequency pulse signal among the control signal, it is clean, stable to guarantee to export the control signal of peripheral equipment.
In summary, the preset program signals in the control signals are used to control the plurality of communication dial switches 300 and the address dial switches 400 to select the corresponding communication link signals and the corresponding configuration address signals, the IO extender 500 forms the corresponding selection signals according to the communication link signals and the configuration address signals, and the driving module 600 drives the corresponding output interfaces 700 to start according to the selection signals, so that the control signals can be output by different output interfaces 700 through the preset program, thereby implementing a plurality of output extensions and implementing centralized control of the whole system.
Example two: referring to fig. 1 and 2, the connection module 200 includes a connector, a first connection capacitor C01, a second connection capacitor C02, a third connection capacitor C03, a fourth connection capacitor C04, a fifth connection capacitor C06 and a sixth connection capacitor C06, where the connector is a connector with 20 ports, one end of the first connection capacitor C01 is connected to the other end of the nineteenth pin of the connector and is grounded, one end of the third connection capacitor C03 is grounded to the other end of the nineteenth pin of the connector, one end of the second connection capacitor C02 is grounded to the other end of the fourteenth pin of the connector, the fifth connection capacitor C05 is connected in parallel to the second connection capacitor C02, one end of the fourth connection capacitor C04 is connected to the other end of the eighteenth pin of the connector and is grounded, and the signal transmitted by the connector is more stable due to the arrangement of the first connection capacitor C01 and the sixth connection capacitor.
Referring to fig. 1 and 3, in the present embodiment, four communication dip switches 300 are provided, one address dip switch 400 is provided, and four communication dip switches 300 are provided, and the connection relationship of the four dip switches is shown in the figure. The four communication dial-up switches 300 may select different communication links according to the control of the communication dial-up switches 300 to determine corresponding protocol channels. The configuration mode of the address dial switch 400 is "00", "01", "10" and "11", each channel can be configured with four addresses, and each address corresponds to 16 paths of output of the output port, so that 256 paths of loads or control and drive of output signals are met through matching of the communication dial switch 300 and the address dial switch 400, and the signal control requirements of medium and large measurement and control project systems in the industry can be met.
Referring to fig. 1 and 4, the IO extender 500 has a model of TCA9535, and a total of 8 registers inside the TCA9535 chip have the following specific functions: according to the communication link signal accessed by the reading SCL end and the SDA end and the configuration address signal of the a0 end, one of the P00-P07 and the P10-P17 is set as an output, and when the TCA9535 needs to set the P00 port as an output, the write P00 port is called in the application logic of the program to light the corresponding indicator lamp in the indication module 110. The port of the IO expander 500 includes a connection end, an SCL end, an SDA end, an a0 end and an a1 end, the connection end is connected to the opto-isolator module 800, the SCL end and the SDA end are connected to the 4 communication dial switches 300, and the a0 end and the a1 end are connected to the address dial switch 400. After different communication links are selected through the communication dial switch 300, protocol channels of the SCL end and the SDA end are determined, and then different addresses are configured by the address dial switch 400 to be sent through the a0 end and the a1 end, so that the IO expander 500 selects a corresponding connection end to output a selection signal according to the communication links and the configured addresses.
Referring to fig. 1, 5 and 6, the optical coupling isolation module 800 includes a plurality of optical coupling isolation units, and 16 optical coupling isolation units are provided corresponding to the connection section of the IO extender 500 in this embodiment, and the optical coupling isolation units include: in the present embodiment, the first isolation resistor corresponds to one of the first hundred resistor R100 to the first hundred-seven resistor R107, the first hundred-eight resistor R108 to the first hundred-fifteen resistor R115 in the drawings. The second isolation resistor is one of twenty-first resistor R21 to twenty-eighth resistor R28, and twenty-ninth resistor R29 to thirty-sixth resistor R36. The accelerating resistor is one of a hundred forty-first resistor R140 to a hundred forty-seventh resistor R147 and a hundred forty-nine resistor R149 to a hundred fifty-eighteen resistor R158. The first isolation capacitor is one of a thirty-third capacitor C30 through a forty-fifth capacitor C45, and the second isolation capacitor is one of a forty-sixth capacitor C46 through a sixty-first capacitor C61. One end of the first isolation resistor is connected with the power supply, and the other end of the first isolation resistor is connected with a first input end of the photoelectric coupler; one end of the second isolation resistor is connected with the first output end of the photoelectric coupler, and the other end of the second isolation resistor is connected with a power supply; one end of the acceleration resistor is connected with the power supply, and the other end of the acceleration resistor is connected with the second input end of the photoelectric coupler and the IO expander 500; one end of the first isolation capacitor is connected between the second isolation resistor and the first output end of the photoelectric coupler, and the other end of the first isolation capacitor is grounded; one end of the second isolation capacitor is connected to the second output terminal of the photoelectric coupler and the driving module 600, and the other end is grounded. Can play the current-limiting effect to photoelectric coupler through first isolation resistor and second isolation resistor, and resistance mainly used increases IO expander 500's driving force and quick response ability with higher speed, and high frequency pulse signal in the control signal that IO expander 500 transmission was come is passed through to the main filtering of first isolation capacitor and second isolation capacitor, can intelligent house photoelectric coupler's hole interference ability, and the driving force also becomes more stable.
Referring to fig. 1 and 7, the driving module 600 includes a plurality of driving units, and in this embodiment, 16 driving units are provided, each driving unit includes an MOS transistor, a gate of the MOS transistor is connected to the second output terminal of the photocoupler, a drain of the MOS transistor is connected to the output interface 700, and a source of the MOS transistor is grounded. In this embodiment, the model of the MOS transistor is 30N06, the main control module 100 outputs the signals to the optical coupler isolation module 800 through the connection module 200 and the IO expander 500, the optical coupler isolates the xiphoid pulse signals in the control signals and outputs the signals to the gate of the MOS transistor, the corresponding output interface 700 is communicated after the corresponding MOS transistor is controlled to be closed, and the output interface 700 outputs the corresponding control signals to realize the expansion of multiple outputs.
The filtering module 900 includes a plurality of filtering units, and the filtering units corresponding to this embodiment are sixteen, and the filtering units include: the filter capacitor corresponds to one of sixty-second capacitors C62 to seventy-seventh capacitors C77 in the figure, the filter resistor corresponds to one of thirty-seventh resistors R37 to fifty-second resistors R52 in the figure, and the filter diode corresponds to one of first diodes DK1 to sixteenth diodes DK16 in the figure. One end of the filter capacitor is connected with the driving module 600 and the second output end of the photoelectric coupler, and the other end of the filter capacitor is connected with the driving module 600; one end of the filter resistor is connected with the driving module 600 and one end of the filter resistor, and the other end is grounded; the anode of the filter diode is connected with the driving module 600 and the output interface 700, and the cathode of the filter diode is connected with the power supply. The filter diode is mainly used for rapidly absorbing or discharging voltage pulses generated by the inductive load when the inductive load is switched on or switched off, and is used for releasing reverse potential generated by the coil.
Referring to fig. 1 and 8, the indication module 110 includes a plurality of indication units, each of the indication units includes an indication resistor and a light emitting diode, wherein the indication resistor is one of the one hundred twenty-th resistor R120 to the one hundred thirty-fifth resistor R135 in the figure, the light emitting diode is one of the tenth light emitting diode LED10 to the eighteenth light emitting diode LED18 in the figure, one end of the indication resistor is connected to the power supply, the other end of the indication resistor is connected to the anode of the light emitting diode, and the cathode of the light emitting diode is connected to the output interface 700. The current output and driving state is displayed through the display of the light emitting diode, so that a user or a maintenance person can quickly find problems.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. An extended IO output apparatus, comprising:
the master control module is connected with an output bus bar and sends a control signal through the output bus bar;
the connecting module is electrically connected with the output bus bar to receive a control signal;
the communication dial switches are electrically connected with the connecting module to receive the control signals and select different communication link signals according to the control signals;
an address dial switch for forming and transmitting a configuration address signal;
the IO expander is electrically connected with the communication dial switch and the address dial switch to receive the communication link signal and the configuration address signal and output a selection signal;
the driving module is electrically connected to the IO expander to receive a selection signal and send a driving signal;
and the output interface is electrically connected with the driving module to receive the driving signal and select a control signal corresponding to the output interface and accessed to the main control module.
2. An extended IO output device according to claim 1, further comprising an optical coupling isolation module electrically connected between the IO extender and the driving module to receive a selection signal and isolate a xipho pulse signal in a control signal sent by the main control module.
3. The extended IO output device of claim 2, further comprising a filtering module electrically connected between the optical coupling isolation module and the driving module to filter a high-frequency pulse signal in the control signal sent by the main control module.
4. The extended IO output device of claim 3, further comprising an indication module electrically connected to the driving module to receive the driving signal and output an indication signal.
5. An extended IO output device according to claim 3, wherein the optical coupling isolation module includes a plurality of optical coupling isolation units, and the optical coupling isolation units include: the device comprises a first isolation resistor, a second isolation resistor, an acceleration resistor, a photoelectric coupler, a first isolation capacitor and a second isolation capacitor;
one end of the first isolation resistor is connected with a power supply, and the other end of the first isolation resistor is connected with a first input end of the photoelectric coupler;
one end of the second isolation resistor is connected with the first output end of the photoelectric coupler, and the other end of the second isolation resistor is connected with a power supply;
one end of the acceleration resistor is connected with a power supply, and the other end of the acceleration resistor is connected with a second input end of the photoelectric coupler and the IO expander;
one end of the first isolation capacitor is connected between the second isolation resistor and the first output end of the photoelectric coupler, and the other end of the first isolation capacitor is grounded;
one end of the second isolation capacitor is connected with the second output end of the photoelectric coupler and the driving module, and the other end of the second isolation capacitor is grounded.
6. The extended IO output device of claim 5, wherein the filtering module comprises a plurality of filtering units, and the filtering units comprise: the filter capacitor, the filter resistor and the filter diode;
one end of the filter capacitor is connected with the drive module and the second output end of the photoelectric coupler, and the other end of the filter capacitor is connected with the drive module;
one end of the filter resistor is connected with one end of the drive module and one end of the filter resistor, and the other end of the filter resistor is grounded;
the positive pole of the filter diode is connected with the driving module and the output interface, and the negative pole of the filter diode is connected with the power supply.
7. The extended IO output device of claim 4, wherein the indication module includes a plurality of indication units, and each indication unit includes an indication resistor and a light emitting diode;
one end of the indicating resistor is connected with a power supply, and the other end of the indicating resistor is connected with the anode of the light-emitting diode;
and the cathode of the light emitting diode is connected with the output interface.
8. The extended IO output device of claim 5, wherein the driving module includes a plurality of driving units, and the driving units include MOS transistors;
the grid electrode of the MOS tube is connected with the second output end of the photoelectric coupler;
the drain electrode of the MOS tube is connected with the output interface;
and the source electrode of the MOS tube is grounded.
9. An extended IO output device according to claim 1, wherein the IO extender is of the type TCA 9535.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849044.6U CN210835696U (en) | 2019-10-30 | 2019-10-30 | Expansion IO output device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849044.6U CN210835696U (en) | 2019-10-30 | 2019-10-30 | Expansion IO output device |
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| CN210835696U true CN210835696U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117149687A (en) * | 2023-09-05 | 2023-12-01 | 浙江东开半导体科技有限公司 | Signal transfer guarantee device |
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2019
- 2019-10-30 CN CN201921849044.6U patent/CN210835696U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117149687A (en) * | 2023-09-05 | 2023-12-01 | 浙江东开半导体科技有限公司 | Signal transfer guarantee device |
| CN117149687B (en) * | 2023-09-05 | 2024-04-09 | 浙江东开半导体科技有限公司 | Signal transfer guarantee device |
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Inventor after: He Jiang Inventor after: Wang Heli Inventor before: He Jiang Inventor before: Wang Wenhe |
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| CB03 | Change of inventor or designer information |