CN115494785A - Signal isolation device and signal control system - Google Patents
Signal isolation device and signal control system Download PDFInfo
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- CN115494785A CN115494785A CN202211337355.0A CN202211337355A CN115494785A CN 115494785 A CN115494785 A CN 115494785A CN 202211337355 A CN202211337355 A CN 202211337355A CN 115494785 A CN115494785 A CN 115494785A
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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
- G05B19/048—Monitoring; Safety
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Abstract
The invention discloses a signal isolation device and a signal control system, wherein the signal isolation device comprises: the device comprises an input module, a control module and an output module; the input module is used for receiving an initial control signal sent by first equipment, generating a plurality of first control signals and sending the first control signals to the control module; the control module comprises a plurality of solid-state relays, each solid-state relay comprises a plurality of target contacts and is used for controlling the connection or disconnection of corresponding first control signals and sending the first control signals to the output module when the solid-state relays are connected; the output module is used for generating a second control signal corresponding to the first control signal and sending the second control signal to the second equipment. The invention realizes the signal control of the external control equipment to the field output equipment with one control more complex multi-channel and carries out various protection processing to the signals, greatly improves the quantity and the quality of the signals, and also realizes the switching of the active and passive working modes of the signal isolation device.
Description
Technical Field
The present invention relates to the field of signal processing, and in particular, to a signal isolation device and a signal control system.
Background
In a control system, an external control device needs to send a control signal to realize on-off control of an output signal of a field output device, and an isolation module with a relay is mostly adopted in the market at present to realize the function of on-off control.
However, most of the isolation modules in the current market adopt conventional relays designed in a single channel, and the number of signals is small, so that the isolation modules are single in use function, and can not divide one path of input control signals into multiple paths to be output, thereby realizing the signal control of one path of input control signals of an external control device to multiple complex multiple paths of field output devices.
Disclosure of Invention
The invention provides a signal isolation device and a signal control system, aiming at overcoming the defect of small signal quantity caused by the fact that an isolation module uses a conventional relay with a single-channel design in the prior art.
The invention solves the technical problems through the following technical scheme:
in a first aspect, the present invention provides a signal isolation apparatus, comprising: the device comprises an input module, a control module and an output module, wherein the input module and the output module are respectively and electrically connected with the control module;
the input module is used for receiving an initial control signal sent by first equipment, generating a plurality of first control signals according to the initial control signal and sending the first control signals to the control module;
the control module comprises a plurality of solid-state relays, each solid-state relay comprises a plurality of target contacts, and each solid-state relay controls the corresponding first control signal to be switched on or off according to the target contacts and sends the first control signal to the output module in a switching-on state;
and the output module is used for generating a second control signal corresponding to the first control signal and sending the second control signal to second equipment.
Preferably, the signal isolation device further comprises a conversion module, and the conversion module is electrically connected with the input module;
the conversion module is used for switching the initial control signal into an active signal or a passive signal.
Preferably, the conversion module comprises a straight pin header.
Preferably, the input module comprises a first alarm unit;
the first alarm unit is used for sending out a first alarm signal when the first equipment is disconnected with the input module;
and/or the presence of a gas in the atmosphere,
the output module comprises a second alarm unit;
and the second alarm unit is used for sending out a second alarm signal when the output module is disconnected with the second equipment.
Preferably, the input module further comprises a first protection unit and a first monitoring unit, and the first protection unit is electrically connected with the first monitoring unit;
the first protection unit is used for receiving the initial control signal, performing first preprocessing on the initial control signal and sending the generated first control signal to the control module; the first pretreatment comprises at least one of overcurrent protection treatment, overvoltage protection treatment and filtering protection treatment;
the first monitoring unit is used for monitoring the conduction relation between the input module and the control module.
Preferably, the output module further comprises a second protection unit and a second monitoring unit, and the second protection unit is electrically connected with the second monitoring unit;
the second protection unit is used for carrying out second preprocessing on the first control signal and sending the generated second control signal to the second equipment; the second pretreatment is TVS protection treatment;
and the second monitoring unit is used for monitoring the conduction relation between the control module and the output module.
Preferably, the first protection unit includes a current-limiting resistor, and the current-limiting resistor is used for performing overcurrent protection processing on the initial control signal;
and/or the presence of a gas in the gas,
the first protection unit comprises a divider resistor, and the divider resistor is used for performing overvoltage protection processing on the initial control signal.
Preferably, the first monitoring unit comprises a first indicator light, and the first indicator light is electrically connected with the control module.
Preferably, the second monitoring unit comprises a second indicator light, and the second indicator light is electrically connected with the control module.
In a second aspect, the present invention provides a signal control system comprising: a first device, a second device and a signal isolation apparatus as described in the first aspect;
the first equipment and the second equipment are respectively in communication connection with the signal isolation device;
the first device is used for sending an initial control signal to the signal isolation device;
the signal isolation device is used for generating a first control signal according to the initial control signal, controlling the first control signal to be switched on or off, and generating a second control signal based on the first control signal and sending the second control signal to the second equipment in a switching-on state.
The positive progress effects of the invention are as follows: the invention discloses a signal isolation device and a signal control system, wherein the signal isolation device comprises: the device comprises an input module, a control module and an output module; the input module is used for receiving an initial control signal sent by first equipment, generating a plurality of first control signals and sending the first control signals to the control module; the control module comprises a plurality of solid-state relays, each solid-state relay comprises a plurality of target contacts and is used for controlling the connection or disconnection of a corresponding first control signal and sending the first control signal to the output module when the first control signal is connected; the output module is used for generating a second control signal corresponding to the first control signal and sending the second control signal to the second equipment. The invention realizes the signal control of the external control equipment to the field output equipment with one control more complex multi-channel and carries out various protection processing to the signals, greatly improves the quantity and the quality of the signals, and also realizes the switching of the active and passive working modes of the signal isolation device.
Drawings
Fig. 1 is a block diagram of a signal isolation apparatus according to embodiment 1 of the present invention.
Fig. 2 is a diagram illustrating an application example of the signal isolation apparatus according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a signal control system according to embodiment 2 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the invention thereto.
Example 1
The present embodiment provides a signal isolation apparatus 1, as shown in fig. 1, the signal isolation apparatus 1 includes: the device comprises an input module 11, a control module 12 and an output module 13, wherein the input module 11 and the output module 13 are respectively and electrically connected with the control module 12.
The input module 11 is configured to receive an initial control signal sent by a first device, generate a plurality of first control signals according to the initial control signal, and send the first control signals to the control module 12.
And the control module 12, wherein the control module 12 comprises a plurality of solid-state relays 121, each solid-state relay 121 comprises a plurality of target contacts, each solid-state relay 121 controls the corresponding first control signal to be switched on or off according to the target contacts, and sends the first control signal to the output module 13 in a switched-on state. As shown in fig. 1, the present embodiment takes two solid-state relays 121 as an example, that is, the control module 12 includes two solid-state relays 121.
And the output module 13 is configured to generate a second control signal corresponding to the first control signal, and send the second control signal to the second device.
Specifically, the first device in this embodiment may select a control device or a control system for actually issuing a command, and the second device may be various civilian devices or nuclear power devices, and may be selected according to actual application requirements. The solid-state relay 121 in this embodiment may selectively adopt an optocoupler relay, each optocoupler relay has a plurality of target contacts therein, each target contact represents that one channel of the optocoupler relay is in a conducting state when being closed, and when a plurality of target contacts are closed simultaneously, a plurality of channels of the optocoupler relay are in a conducting state simultaneously. This embodiment carries out one minute more circuit design through the initial control signal all the way, has realized that input signal is many to the accuse of external output end signal, has adopted independent opto-coupler relay to have guaranteed also that the mutual independence between each signal channel has simultaneously, has also reduced the maintenance degree of difficulty in later stage.
As shown in fig. 1, the signal isolation apparatus further includes a conversion module 14, and the conversion module 14 is electrically connected to the input module 11.
And the conversion module 14 is used for switching the initial control signal into an active signal or a passive signal.
As shown in fig. 1, conversion module 14 includes a straight pin 141.
Specifically, in this embodiment, the signal isolation device is configured with two selectable signal source modes, namely an active mode and a passive mode, which can be switched by the conversion module 14. The straight PIN 141 may adopt two 3PIN straight PINs and an external power device to control a signal source, and when the straight PIN 141 is connected with the power device, the signal source is an active signal; when the straight pin 141 is not connected to an external power supply device and the straight pin 141 is short-circuited, the signal source is a passive signal, and the two modes can be switched according to the actual characteristics of the field device when in specific use. In practical application, the 3PIN direct-plug PIN is a jumper wire, namely, two groups of jumper wires are configured on the signal isolation device, and the active mode and the passive mode can be automatically switched and used according to the fact that whether power supply is needed or not in practical use.
As shown in fig. 1, the input module 11 includes a first alarm unit 111.
A first alarm unit 111, configured to send a first alarm signal when the first device is disconnected from the input module 11.
As shown in fig. 1, the output module 13 includes a second alarm unit 131.
And the second alarm unit 131 is used for sending out a second alarm signal when the output module 13 is disconnected with the second device.
Specifically, the first alarm unit 111 is configured to monitor a signal conduction relationship between the first device and the input module 11, and send a first alarm signal when the signal is disconnected; the second alarm unit 131 is used for monitoring the signal conduction relationship between the output module 13 and the second device, and sending out a second alarm signal when the signal is disconnected, which is helpful for field operators to perform troubleshooting and maintenance according to the actually sent alarm signal.
As shown in fig. 1, the input module 11 further includes a first protection unit 112 and a first monitoring unit 113, and the first protection unit 112 and the first monitoring unit 113 are electrically connected.
The first protection unit 112 is configured to receive the initial control signal, perform first preprocessing on the initial control signal, and send the generated first control signal to the control module 12; the first preprocessing includes at least one of an overcurrent protection processing, an overvoltage protection processing, and a filter protection processing.
The first monitoring unit 113 is configured to monitor a conduction relationship between the input module 11 and the control module 12.
Specifically, the input module 11 is electrically connected to the first device, and is configured to receive an initial control signal sent by the first device, generate a first control signal after first preprocessing in the first protection unit 112, and enter the input end of the solid-state relay 121, and monitor the conduction relationship between the first protection unit 112 and the solid-state relay 121 through the first monitoring unit 113. The first preprocessing in the first protection unit 112 mainly protects the initial control signal, and generates the first control signal by performing protection processing such as overcurrent protection processing, overvoltage protection processing, and filter protection processing on the initial control signal, so that the quality and stability of the first control signal are greatly improved.
As shown in fig. 1, the output module 13 further includes a second protection unit 132 and a second monitoring unit 133, and the second protection unit 132 and the second monitoring unit 133 are electrically connected.
The second protection unit 132 is configured to perform second preprocessing on the first control signal, and send the generated second control signal to the second device; the second preprocessing is a TVS protection processing. Among them, TVS (Transient Voltage super) protection processing, that is, transient suppression protection processing.
And a second monitoring unit 133, configured to monitor a conduction relationship between the control module 12 and the output module 13.
Specifically, the solid state relay 121 in the control module 12 serves as an interface for controlling on and off of a first control signal, when a target contact in one solid state relay 121 is closed, that is, one channel in the solid state relay 121 is on, the solid state relay 121 sends the first control signal to the input module 11, the first control signal is subjected to second preprocessing in the second protection unit 132 in the output module 13 and is generated into a second control signal, and the second control signal is sent to the second device, and the second monitoring unit 133 in the output module 13 can monitor a conduction relation between the second protection unit 132 and the second device, that is, on and off of the second device can be controlled by the initial control signal sent by the first device. The second preprocessing in the second protection unit 132 mainly protects the first control signal, and generates the second control signal after performing transient suppression protection processing on the first initial signal, thereby greatly improving the quality and stability of the second control signal.
The first protection unit 112 includes a current limiting resistor for performing an overcurrent protection process on the initial control signal.
The first protection unit 112 includes a voltage dividing resistor, and the voltage dividing resistor is used for performing an overvoltage protection process on the initial control signal.
Specifically, since the withstand voltage value of the employed optocoupler relay is relatively low, overcurrent protection processing and overvoltage protection processing are required for the initial control signal sent to the input module, and therefore, a current-limiting resistor and a voltage-dividing resistor are provided in the first protection unit 112, and in actual engineering application, resistors with different resistance values and numbers are employed for matching according to an actual threshold value.
The first monitoring unit 113 includes a first indicator light electrically connected to the control module 12.
The second monitoring unit 133 includes a second indicator light electrically connected to the control module 12.
In an alternative embodiment, the solid-state relay 121 is used as an interface, a portion in front of an input end of the solid-state relay 121 is used as an input end of the isolation device, a portion behind an output end of the solid-state relay 121 is used as an output end of the isolation device, and the input end and the output end are both provided with protection components for ensuring normal operation of circuits of the input end and the output end, that is, the first protection unit 112 is provided with an input protection circuit 1121 for performing first preprocessing on an initial control signal, and the second protection unit 132 is provided with an output protection circuit 1321 for performing second preprocessing on the first control signal.
In an alternative embodiment, as shown in fig. 2, the first monitoring unit 113 includes a first indicator light 1131, the first protection unit 112 includes an input protection circuit 1121 for performing first preprocessing on the initial control signal, the first indicator light 1131 is electrically connected to the input protection circuit 1121 and the solid-state relay 121 respectively, a conducting relationship between the input protection circuit 1121 and the solid-state relay 121 is determined by a bright-dark state of the first indicator light 1131, and when conducting, the first indicator light 1131 is bright, and when disconnecting, the first indicator light 1131 is not bright. The number of the first indicator lights 1131 corresponds to the number of the solid-state relays 121, and each first indicator light 1131 is configured to monitor a conduction relationship of one channel between the input protection circuit 1121 and one solid-state relay 121. This mode is through realizing the independent monitoring of isolated channel, easily judges when follow-up breaking down, has reduced the maintenance degree of difficulty in later stage.
In an alternative embodiment, as shown in fig. 2, the second monitoring unit 133 includes a second indicator light 1331, the second protection unit 132 includes an output protection circuit 1321 for performing second preprocessing on the first control signal, the second indicator light 1331 is electrically connected to the solid-state relay 121 and the output protection circuit 1321 respectively, the conduction relationship between the solid-state relay 121 and the output protection circuit 1321 is judged through the bright and dark states of the second indicator light, and when the conduction state is on, the second indicator light 1331 is bright, and when the disconnection state is off, the second indicator light 1331 is not bright. The number of the second indicator lights 1331 corresponds to the number of target contacts in the solid-state relays 121, and each second indicator light 1331 is used for monitoring the conduction relationship of one channel between one solid-state relay 121 and the output protection circuit 1321, and when there are multiple target contacts in one solid-state relay 121, the solid-state relay 121 can control the conduction or the disconnection of multiple channels. This mode is through realizing the independent monitoring of isolated channel, easily judges when follow-up breaking down, has reduced the maintenance degree of difficulty in later stage.
In an alternative embodiment, all of the devices employed in this embodiment may be configured for nationwide production.
The embodiment provides a signal isolation device, which generates a plurality of first control signals by receiving an initial control signal sent by first equipment and preprocessing the initial control signal, controls the on/off of the first control signals through a plurality of solid-state relays, and preprocesses the conducted first control signals to generate a corresponding number of second control signals and sends the second control signals to second equipment. The signal isolation device provided by the embodiment realizes signal control of one field output device by the external control device with multiple complex channels and multiple protection processing on signals, greatly improves the quantity and quality of the signals, and also realizes switching between an active working mode and a passive working mode of the signal isolation device.
Example 2
The present embodiment provides a signal control system, as shown in fig. 3, including: a first device 2, a second device 3 and a signal isolation apparatus 1 in embodiment 1.
Specifically, the first device 2 in this embodiment may select a control device or a control system for actually issuing a command, and the second device 3 may be various civil devices or nuclear power devices, and may be selected according to actual engineering application requirements.
The first device 2 and the second device 3 are each communicatively connected to the signal isolation arrangement 1.
A first device 2 for sending an initial control signal to the isolation arrangement 1.
And the signal isolation device 1 is configured to generate a first control signal according to the initial control signal, control on or off of the first control signal, and generate a second control signal based on the first control signal and send the second control signal to the second device 3 in an on state.
Specifically, the signal isolation device 1 receives an initial control signal sent by the first device 2, performs first preprocessing on the initial control signal to generate a plurality of first control signals, controls the on/off of the first control signal through a plurality of solid-state relays, performs second preprocessing on the first control signal after the on-state control signal to generate a corresponding number of second control signals, and sends the second control signals to the second device 3. Wherein the initial control signal comprises an active signal and a passive signal; the first pretreatment comprises at least one of overcurrent protection treatment, overvoltage protection treatment and filtering protection treatment; the second preprocessing is a TVS protection processing.
This embodiment provides a signal control system, through carrying out communication connection with first equipment and second equipment respectively with signal isolating device, this signal control system has realized the signal control of the many complicated multichannel of first equipment to second equipment accuse through using the solid state relay of different quantity at signal isolating device, has guaranteed the mutual independence of each signal channel simultaneously, has greatly improved the quantity of signal.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of this invention, and these changes and modifications are within the scope of this invention.
Claims (10)
1. A signal isolation apparatus, comprising: the device comprises an input module, a control module and an output module, wherein the input module and the output module are respectively and electrically connected with the control module;
the input module is used for receiving an initial control signal sent by first equipment, generating a plurality of first control signals according to the initial control signal and sending the first control signals to the control module;
the control module comprises a plurality of solid-state relays, each solid-state relay comprises a plurality of target contacts, and each solid-state relay controls the corresponding first control signal to be switched on or off according to the target contacts and sends the first control signal to the output module in a switching-on state;
and the output module is used for generating a second control signal corresponding to the first control signal and sending the second control signal to second equipment.
2. The signal isolation apparatus of claim 1, further comprising a conversion module electrically connected to the input module;
the conversion module is used for switching the initial control signal into an active signal or a passive signal.
3. The signal isolation device of claim 2, wherein the conversion module comprises a straight pin header.
4. The signal isolation device of claim 1, wherein the input module comprises a first alarm unit;
the first alarm unit is used for sending out a first alarm signal when the first equipment is disconnected with the input module;
and/or the presence of a gas in the gas,
the output module comprises a second alarm unit;
and the second alarm unit is used for sending out a second alarm signal when the output module is disconnected with the second equipment.
5. The signal isolation device of claim 1, wherein the input module further comprises a first protection unit and a first monitoring unit, the first protection unit and the first monitoring unit being electrically connected;
the first protection unit is used for receiving the initial control signal, performing first preprocessing on the initial control signal and sending the generated first control signal to the control module; the first pretreatment comprises at least one of overcurrent protection treatment, overvoltage protection treatment and filtering protection treatment;
the first monitoring unit is used for monitoring the conduction relation between the input module and the control module.
6. The signal isolation apparatus of claim 1, wherein the output module further comprises a second protection unit and a second monitoring unit, the second protection unit and the second monitoring unit being electrically connected;
the second protection unit is used for carrying out second preprocessing on the first control signal and sending the generated second control signal to the second equipment; the second pretreatment is TVS protection treatment;
and the second monitoring unit is used for monitoring the conduction relation between the control module and the output module.
7. The signal isolation device of claim 5, wherein the first protection unit comprises a current limiting resistor, the current limiting resistor is used for performing an over-current protection process on the initial control signal;
and/or the presence of a gas in the gas,
the first protection unit comprises a divider resistor, and the divider resistor is used for performing overvoltage protection processing on the initial control signal.
8. The signal isolation device of claim 5, wherein the first monitoring unit comprises a first indicator light, the first indicator light being electrically connected to the control module.
9. The signal isolation device of claim 6, wherein the second monitoring unit comprises a second indicator light, the second indicator light being electrically connected to the control module.
10. A signal control system, the control system comprising: a first device, a second device and a signal isolation apparatus as claimed in any one of claims 1 to 9;
the first equipment and the second equipment are respectively in communication connection with the signal isolation device;
the first device is used for sending an initial control signal to the signal isolation device;
the signal isolation device is used for generating a first control signal according to the initial control signal, controlling the first control signal to be switched on or off, and generating a second control signal based on the first control signal and sending the second control signal to the second equipment in a switching-on state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211337355.0A CN115494785A (en) | 2022-10-28 | 2022-10-28 | Signal isolation device and signal control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211337355.0A CN115494785A (en) | 2022-10-28 | 2022-10-28 | Signal isolation device and signal control system |
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| Publication Number | Publication Date |
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| CN115494785A true CN115494785A (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211337355.0A Pending CN115494785A (en) | 2022-10-28 | 2022-10-28 | Signal isolation device and signal control system |
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| CN (1) | CN115494785A (en) |
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- 2022-10-28 CN CN202211337355.0A patent/CN115494785A/en active Pending
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