CN112835338A - Channel module and control device - Google Patents
Channel module and control device Download PDFInfo
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- CN112835338A CN112835338A CN202110023609.0A CN202110023609A CN112835338A CN 112835338 A CN112835338 A CN 112835338A CN 202110023609 A CN202110023609 A CN 202110023609A CN 112835338 A CN112835338 A CN 112835338A
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- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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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
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33273—DCS distributed, decentralised controlsystem, multiprocessor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The application discloses channel module includes: the system comprises a processor, a first preset number of main channel conditioning circuits, a second preset number of standby channel conditioning circuits and a switch array; one path of the main channel conditioning circuit is connected with one path of external equipment signal access terminal, and the external equipment signal access terminals connected with the main channel conditioning circuit are different; each external equipment signal access terminal is connected with at least two spare channel conditioning circuits, and the external equipment signal access terminals are connected with the spare channel conditioning circuits through one switch in the switch array respectively. The channel module and the channel conditioning circuit do not need to be replaced manually, reliable operation of equipment can be effectively guaranteed, and cost is low. The application also discloses a control device, which has the technical effect.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a channel module; also relates to a control device.
Background
Distributed control systems, programmable logic controllers, and the like have become indispensable automatic control devices in industrial fields. The signals (such as voltage, current, pressure, liquid level, etc.) of the site measuring points are connected into the control device through cables, and are processed, stored and displayed by the control device. The control device is generally composed of a control module and a channel module. And a field measuring point signal is connected into the channel module through a cable. The channel module generally includes a processor and multiple channel conditioning circuits, each channel conditioning circuit corresponds to one of the measurement point signals, and when a certain channel conditioning circuit fails, the channel module cannot process the measurement point signal.
In view of the above situation, one technical solution adopted at present is to manually replace a channel conditioning circuit or the entire channel module when the channel conditioning circuit in the channel module is faulty. However, since the channel conditioning circuit or the channel module needs to be replaced by a means, not only the workload is increased, but also the control device installed at a high risk such as a cooling tower, a boiler top end, and the like needs to be replaced by a high altitude operation after the equipment is shut down, which causes a production loss and requires a high maintenance cost. Another technical solution adopted at present is to provide a redundant channel module, as shown in fig. 1, two identical channel modules are provided, one channel module is in operation, and the other channel module is in standby. When one of the channel modules fails, the other channel module operates. However, when the two channel modules have a fault of the channel conditioning circuit, it cannot be guaranteed that the signals of the measuring points can be accessed. And the use of two channel modules increases the cost.
In view of the above, how to solve the above technical defects has become an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at providing a passageway module need not manual change passageway module and passageway conditioning circuit, can effectively ensure the reliable operation of equipment, and the cost is lower. Another object of the present application is to provide a control device that also has the above technical effects.
In order to solve the above technical problem, the present application provides a channel module, including:
the system comprises a processor, a first preset number of main channel conditioning circuits, a second preset number of standby channel conditioning circuits and a switch array; one path of the main channel conditioning circuit is connected with one path of external equipment signal access terminal, and the external equipment signal access terminals connected with the main channel conditioning circuit are different; each external equipment signal access terminal is connected with at least two spare channel conditioning circuits, and the external equipment signal access terminals are connected with the spare channel conditioning circuits through one switch in the switch array respectively.
Optionally, the number of the main channel conditioning circuits is equal to the number of the standby channel conditioning circuits.
Optionally, the main channel conditioning circuit is connected to the corresponding external device signal access terminal through one switch in the switch array.
Optionally, each external device signal access terminal is connected to each spare channel conditioning circuit.
Optionally, each switch connected to the same standby channel conditioning circuit is in an interlocking relationship, so that when one of the switches connected to the standby channel conditioning circuit is closed, the other switches connected to the standby channel conditioning circuit are all continuously turned off.
Optionally, each switch connected to the same external device signal access terminal is in an interlocking relationship, so that when one of the switches connected to the external device signal access terminal is closed, the other switches connected to the external device signal access terminal are all continuously turned off.
Optionally, each of the main channel conditioning circuits and each of the standby channel conditioning circuits are respectively connected to an indicator light, so as to indicate a signal access state of the main channel conditioning circuit and the standby channel conditioning circuit through the indicator light.
In order to solve the above technical problem, the present application further provides a control device, which includes a control module and the channel module as described in any one of the above.
The application provides a channel module, includes: the system comprises a processor, a first preset number of main channel conditioning circuits, a second preset number of standby channel conditioning circuits and a switch array; one path of the main channel conditioning circuit is connected with one path of external equipment signal access terminal, and the external equipment signal access terminals connected with the main channel conditioning circuit are different; each external equipment signal access terminal is connected with at least two spare channel conditioning circuits, and the external equipment signal access terminals are connected with the spare channel conditioning circuits through one switch in the switch array respectively.
It can be seen that, in the channel module provided by the application, the channel conditioning circuit in the channel module is in a redundant arrangement, not only is a main channel conditioning circuit arranged, but also a standby channel conditioning circuit is arranged, and the standby channel conditioning circuit is connected with the external equipment signal access terminal through a switch. When the main channel conditioning circuit is normal, the standby channel conditioning circuit does not work in standby mode, when the main channel conditioning circuit fails, one standby channel conditioning circuit which can take over the failed main channel conditioning circuit can be selected optionally, corresponding switches can be controlled to be closed remotely, the selected standby channel conditioning circuit can take over the failed main channel conditioning circuit to work, personnel do not need to arrive at the site, manual replacement of a channel module or the channel conditioning circuit is not needed, reliable operation of equipment can be effectively guaranteed, cost is low, and channel maintenance-free is achieved to a certain extent.
The control device that this application provided has above-mentioned technological effect equally.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art channel scheme;
fig. 2 is a schematic diagram of a channel module according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of another channel module provided in an embodiment of the present application;
fig. 4 is a schematic diagram of another channel module provided in the embodiment of the present application.
Detailed Description
The core of the application is to provide a channel module, the channel module and a channel conditioning circuit do not need to be replaced manually, reliable operation of equipment can be effectively guaranteed, and the cost is low. Another core of the present application is to provide a control device, which also has the above technical effects.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2, fig. 2 is a schematic view of a channel module according to an embodiment of the present application, and referring to fig. 2, the channel module mainly includes:
processor 10, a first predetermined number of main channel conditioning circuits 20, a second predetermined number of standby channel conditioning circuits 30, and switch array 40; one main channel conditioning circuit 20 is connected with one external device signal access terminal, and the external device signal access terminals connected with the main channel conditioning circuits 20 are different; each external device signal access terminal is connected to at least two spare channel conditioning circuits 30, and the external device signal access terminal and the spare channel conditioning circuits 30 are connected through one switch in the switch array 40.
Specifically, the channel module provided by the present application mainly includes a processor 10, a main channel conditioning circuit 20, a standby channel conditioning circuit 30, and a switch array. The processor 10 is mainly responsible for controlling the main channel conditioning circuit 20 and the standby channel conditioning circuit 30, performing operations on channel data, and transmitting the operation results to a control module in the control device.
Each main channel conditioning circuit 20 is connected to one external device signal access terminal, and the external device signal is accessed to the main channel conditioning circuit 20 connected to the external device signal access terminal through the external device signal access terminal. Since the main channel conditioning circuits 20 correspond to the external device signal access terminals one to one, the number of the main channel conditioning circuits 20 is equal to the number of the external device signal access terminals. For example, the number of the main channel conditioning circuits 20 is 8, and the number of the external device signal access terminals is 8.
Referring to fig. 3, in a specific embodiment, the main channel conditioning circuit 20 is connected to the corresponding external device signal access terminal through a switch in the switch array 40. For example, the number of the main channel conditioning circuits 20 is 8, the main channel conditioning circuit 1 is connected to the external device signal access terminal 1 through a switch, the main channel conditioning circuit 2 is connected to the external device signal access terminal 2 through a switch, and so on, and the main channel conditioning circuit 8 is also connected to the external device signal access terminal 8 through a switch.
In addition to main channel conditioning circuit 20, the channel module provided herein also includes a backup channel conditioning circuit 30. Each external device signal access terminal is connected with at least two standby channel conditioning circuits 30, and the external device signal access terminal is connected with the standby channel conditioning circuit 30 through a switch. Thus, when the switch between the external device signal connection terminal and a certain backup path conditioning circuit 30 is closed, the external device signal connection terminal is connected to the backup path conditioning circuit 30, and the external device signal is connected to the backup path conditioning circuit 30 by the external device signal.
For example, referring to fig. 4, taking as an example that each external device signal access terminal is connected to two backup channel conditioning circuits 30, the external device signal access terminal 1 is connected to the backup channel conditioning circuit 1 through a switch K1, and the external device signal access terminal 1 is connected to the backup channel conditioning circuit 2 through a switch K2. When the switch K1 is closed, the external device signal access terminal is connected to the standby channel conditioning circuit 1, and the external device signal is accessed to the standby channel conditioning circuit 1 from the external device signal access terminal 1.
Under normal conditions, that is, under the condition that each main channel conditioning circuit 20 is normal, each external device signal is accessed to the corresponding main channel conditioning circuit 20 through the corresponding external device signal access terminal. When one of the main channel conditioning circuits 20 is abnormal, one of the switches between the external device signal access terminal connected to the abnormal main channel conditioning circuit 20 and the standby channel conditioning circuit 30 is closed, so that the external device signal that should be accessed to the abnormal main channel conditioning circuit 20 is accessed to the standby channel conditioning circuit 30.
For example, referring to fig. 4, when the main channel conditioning circuit 1 is abnormal, any one of the switch K1 and the switch K3 may be closed at this time. When the switch K1 is closed, the signal of the external device that should be connected to the main channel conditioning circuit 1 is connected to the standby channel conditioning circuit 1. When the switch K3 is closed, the external device signal that should be connected to the main channel conditioning circuit 1 is connected to the standby channel conditioning circuit 2.
In one embodiment, each external device signal access terminal is connected to each spare channel conditioning circuit 30.
Specifically, in this embodiment, each external device signal access terminal is connected to each standby channel conditioning circuit 30 in addition to one main channel conditioning circuit 20. Therefore, when the main channel conditioning circuit 20 connected to a certain external device signal access terminal is abnormal, one of the standby channel conditioning circuits 30 can be selected from all the standby channel conditioning circuits 30, and the corresponding switch is remotely closed, so that the selected standby channel conditioning circuit 30 is connected with the external device signal access terminal.
Further, in one embodiment, the number of primary channel conditioning circuits 20 is equal to the number of backup channel conditioning circuits 30, i.e., the first predetermined number is equal to the second predetermined number. For example, main channel conditioning circuit 20 and standby channel conditioning circuit 30 are each 8-way. At this time, if one main channel conditioning circuit 20 is provided, one spare channel conditioning circuit 30 may be selected from among the 8 spare channel conditioning circuits 30, so as to access the external device signal that should be accessed to the abnormal main channel conditioning circuit 20 to the selected spare channel conditioning circuit 30. In this embodiment, the number of the main channel conditioning circuits 20 is equal to the number of the standby channel conditioning circuits 30, so that it can be ensured that signals of each external device can be accessed even when all the main channel conditioning circuits 20 are abnormal, and the external device is prevented from being out of control.
Of course, the number of main channel conditioning circuits 20 and the number of standby channel conditioning circuits 30 may also be different, i.e. the first predetermined number is not equal to the second predetermined number. Where the number of main channel conditioning circuits 20 and backup channel conditioning circuits 30 is unequal, the number of backup channel conditioning circuits 30 can be less than the number of main channel conditioning circuits 20. For example, main channel conditioning circuit 20 has 8 channels and backup channel conditioning circuit 30 has 6 channels. At this time, if one main channel conditioning circuit 20 is provided, one spare channel conditioning circuit 30 may be selected from the 6 spare channel conditioning circuits 30, so as to connect the external device signal that should be connected to the abnormal main channel conditioning circuit 20 to the selected spare channel conditioning circuit 30.
Or the number of standby channel conditioning circuits 30 may be greater than the number of primary channel conditioning circuits 20. For example, main channel conditioning circuit 20 has 8 channels and standby channel conditioning circuit 30 has 10 channels. At this time, if one main channel conditioning circuit 20 is provided, one spare channel conditioning circuit 30 may be selected from the 10 spare channel conditioning circuits 30, so as to connect the external device signal that should be connected to the abnormal main channel conditioning circuit 20 to the selected spare channel conditioning circuit 30.
Further, on the basis of the above embodiment, as a preferred implementation manner, the switches connected to the same standby channel conditioning circuit 30 are in an interlocking relationship, so that when one switch connected to the standby channel conditioning circuit 30 is closed, the other switches connected to the standby channel are all continuously turned off.
Specifically, in order to avoid that the same standby channel conditioning circuit 30 simultaneously accesses two or more external device signals, in this embodiment, the switches connected to the same standby channel conditioning circuit 30 are in an interlocking relationship, that is, when one of the switches connected to the same standby channel conditioning circuit 30 is closed, the other switches connected to the standby channel conditioning circuit 30 are all continuously turned off, so that only one of the switches connected to the standby channel conditioning circuit 30 is in a closed state.
For example, the standby channel conditioning circuit 1 is connected to the external device signal access terminal 1 through the switch 1, the standby channel conditioning circuit 1 is connected to the external device signal access terminal 2 through the switch 2, when the switch 1 is closed, the switch 2 is continuously in the off state, and when the switch 2 is closed, the switch 1 is continuously in the off state.
Further, on the basis of the above embodiment, as a preferred implementation manner, the switches connected to the same external device signal access terminal are in an interlocking relationship, so that when one of the switches connected to the external device signal access terminal is closed, the other switches connected to the external device signal access terminal are all continuously turned off.
Specifically, in order to avoid that the same external device signal access terminal is simultaneously connected to the two or more standby channel conditioning circuits 30, in this embodiment, the switches connected to the same external device signal access terminal are in an interlocking relationship, that is, when one of the switches connected to the same external device signal access terminal is closed, the other switches connected to the external device signal access terminal are all continuously turned off, so that only one of the switches connected to the external device signal access terminal is in a closed state.
For example, the external device signal access terminal 1 is connected to the standby channel conditioning circuit 1 through the switch 1, the external device signal access terminal 1 is connected to the standby channel conditioning circuit 2 through the switch 3, the switch 3 is continuously in the off state when the switch 1 is closed, and the switch 1 is continuously in the off state when the switch 3 is closed.
Further, on the basis of the above embodiment, as a preferred implementation manner, each of the main channel conditioning circuits 20 and each of the standby channel conditioning circuits 30 are respectively connected with an indicator light, so as to indicate the signal connection status of the main channel conditioning circuit 20 and the standby channel conditioning circuit 30 through the indicator light.
Specifically, in order to facilitate visual inspection of the signal access states of each main channel conditioning circuit 20 and each standby channel conditioning circuit 30, in this embodiment, each main channel conditioning circuit 20 and each standby channel conditioning circuit 30 are respectively connected to an indicator lamp, so as to indicate the signal access states of each main channel conditioning circuit 20 and each standby channel conditioning circuit 30 through the bright and dark states of the indicator lamps. For example, when the main channel conditioning circuit 20 accesses the external device signal, the corresponding indicator light is on, and when the main channel conditioning circuit 20 does not access the external device signal, the corresponding indicator light is off.
It should be noted that, for the specific structure of the channel conditioning circuit, details are not described herein, and reference may be made to the prior art.
In summary, in the channel module provided in the present application, the channel conditioning circuit in the channel module is provided with redundancy, and not only the main channel conditioning circuit but also the standby channel conditioning circuit are provided, and the standby channel conditioning circuit is connected to the external device signal access terminal through the switch. When the main channel conditioning circuit is normal, the standby channel conditioning circuit does not work in standby mode, when the main channel conditioning circuit fails, one standby channel conditioning circuit which can take over the failed main channel conditioning circuit can be selected optionally, corresponding switches can be controlled to be closed remotely, the selected standby channel conditioning circuit can take over the failed main channel conditioning circuit to work, personnel do not need to arrive at the site, manual replacement of a channel module or the channel conditioning circuit is not needed, reliable operation of equipment can be effectively guaranteed, cost is low, and channel maintenance-free is achieved to a certain extent.
The application also provides a control device, which comprises a control module and the channel module. For the control device provided in the present application, details of the control device are not described herein, and reference may be made to the above embodiment of the channel module.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The channel module and the control device provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A channel module, comprising:
the system comprises a processor, a first preset number of main channel conditioning circuits, a second preset number of standby channel conditioning circuits and a switch array; one path of the main channel conditioning circuit is connected with one path of external equipment signal access terminal, and the external equipment signal access terminals connected with the main channel conditioning circuit are different; each external equipment signal access terminal is connected with at least two spare channel conditioning circuits, and the external equipment signal access terminals are connected with the spare channel conditioning circuits through one switch in the switch array respectively.
2. The channel module of claim 1, wherein the number of primary channel conditioning circuits is equal to the number of backup channel conditioning circuits.
3. The channel module of claim 1, wherein the main channel conditioning circuit is connected to the corresponding external device signal access terminal through a switch of the switch array.
4. The channel module of claim 1, wherein each of said peripheral device signal access terminals is connected to each of said backup channel conditioning circuits.
5. The channel module of claim 1, wherein the switches connected to the same backup channel conditioning circuit are interlocked such that when one of the switches connected to the backup channel conditioning circuit is closed, the other switches connected to the backup channel conditioning circuit are continuously turned off.
6. The channel module of claim 1, wherein the switches connected to the same external device signal access terminal are interlocked, such that when one of the switches connected to the external device signal access terminal is closed, the other switches connected to the external device signal access terminal are continuously turned off.
7. The channel module of claim 1, wherein each of the main channel conditioning circuits and each of the standby channel conditioning circuits are respectively connected to an indicator light, so as to indicate the signal access status of the main channel conditioning circuits and the standby channel conditioning circuits through the indicator lights.
8. A control device comprising a control module and a channel module as claimed in any one of claims 1 to 7.
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| CN202110023609.0A CN112835338B (en) | 2021-01-08 | 2021-01-08 | Channel module and control device |
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| CN202110023609.0A CN112835338B (en) | 2021-01-08 | 2021-01-08 | Channel module and control device |
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