CN219627735U - Bus safety alarm system - Google Patents
Bus safety alarm system Download PDFInfo
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- CN219627735U CN219627735U CN202320234576.9U CN202320234576U CN219627735U CN 219627735 U CN219627735 U CN 219627735U CN 202320234576 U CN202320234576 U CN 202320234576U CN 219627735 U CN219627735 U CN 219627735U
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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 utility model discloses a bus safety alarm system, comprising: the system comprises a field bus, a connection testing device, an alarm and industrial control equipment, wherein the field bus is connected with the field equipment; the connection testing device is respectively connected with the field bus and the alarm and is used for testing the communication condition of the field bus and sending an alarm instruction to the alarm when communication abnormality occurs; the alarm is connected with the industrial control equipment, alarms when receiving an alarm instruction sent by the connection testing device, and sends an alarm signal to the industrial control equipment. The communication test device is arranged specially to conduct real-time communication test on the field bus so as to ensure that the communication condition of the field bus is known in time, and when the communication problem of the field bus is known, the communication fault of the field bus is reported to the industrial control equipment and operators nearby in time through the alarm, so that the operators can find and check the fault condition of the field bus in time.
Description
Technical Field
The utility model relates to the technical field of communication transmission, in particular to a bus safety alarm system.
Background
The industrial information industry has widely adopted field bus to communicate, so that the whole industrial information system can support high-speed data transmission and processing, and the system has higher compatibility and expandability and has a simple corresponding hardware structure.
For example, a field bus such as a VME bus can be used to connect each field device in an industrial field in series with a background industrial control device. Because VME buses are capable of transmitting data in harsh environments such as high vibration, high shock, or high interference, existing industrial information systems often use VME buses as fieldbuses. However, a large number of field devices (such as intelligent instruments and meters, controllers and executing mechanisms) need to be connected to industrial control equipment through a field bus such as a VME bus, if the field bus has a problem, the information transmission in the bus is greatly affected, or the industrial information transmission is blocked or the industrial information is leaked, so that the industrial information in the field bus is intercepted or even stolen. Although the field buses, such as VME buses, are provided with corresponding data transmission protocols, industrial information is difficult to decipher, the transmission protocols of the field buses are disclosed, so that the information transmitted by the field buses cannot be ensured to be safe, and the industrial information is in risk of leakage.
In a real situation, an operator needs to know the communication condition of the field bus in time and check the communication path of the field bus in time. In the prior art, the communication condition of the industrial control equipment is usually detected through the field bus, and the industrial control equipment is reported when the communication problem occurs, however, if the field bus has the communication problem, bandwidth blockage can be caused, so that the industrial control equipment is difficult to acquire the communication problem of the field bus in time, and the field bus fault is difficult to be checked in time.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is that potential safety hazards cannot be found in time when the communication condition of the field bus is in question, so that the bus safety alarm system is provided.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the embodiment of the utility model provides a bus safety alarm system, which comprises: a field bus, a connection testing device, an alarm and industrial control equipment, wherein,
the field bus is connected with the field device;
the connection testing device is respectively connected with the field bus and the alarm and is used for testing the communication condition of the field bus and sending an alarm instruction to the alarm when communication abnormality occurs;
the alarm is connected with the industrial control equipment, alarms when receiving the alarm instruction sent by the connection testing device, and sends an alarm signal to the industrial control equipment.
Optionally, the connection testing device comprises an instruction sending module and a feedback receiving module, wherein,
the instruction sending module is used for sending a test instruction to the field device through the field bus;
the feedback receiving module is used for receiving a feedback signal after the field device receives the test instruction.
Optionally, the connection testing device further includes a judging module, the judging module is a comparing circuit, a first input end of the comparing circuit is externally connected with a feedback signal sent by the field device, a second input end of the comparing circuit is externally connected with a preset alarm threshold, and an output end of the comparing circuit outputs an alarm instruction for judging whether the feedback signal is normal or not, and when the feedback signal is an abnormal signal, the comparing circuit sends the alarm instruction to the alarm.
Optionally, the field bus is in a tree network topology structure, and the field bus comprises multiple stages of switch nodes, and the last stage node in the switch nodes is connected with the field device.
Optionally, the bus security alarm system further includes: and the input end of the delay response module is connected with the field bus, and the output end of the delay response module is connected with the field device and is used for delaying response feedback signals.
Optionally, the delay response module is a delay relay.
Optionally, the connection testing device further includes: the delay detection module comprises a timer and a comparator, wherein,
the timer is respectively connected with the instruction sending module and the feedback receiving module and is used for collecting the delay feedback time of the field device;
the first input end of the comparator is externally connected with the delay feedback time acquired by the timer, the second input end of the comparator is externally connected with the delay time of the delay response module, and the output end of the comparator outputs an alarm instruction.
Optionally, the alarm comprises a first voice alarm and a second voice alarm, wherein,
the first voice alarm is arranged on one side of the industrial control equipment and is respectively connected with the connection testing device and the industrial control equipment;
the second voice alarm is arranged on one side of the field device and is connected with the connection testing device.
Optionally, the bus security alarm system further includes: the power module is respectively connected with the connection testing device and the alarm; the power module includes: the device comprises an alternating current plug, an alternating current-direct current converter, a power supply and a transformer; the input end of the alternating current-direct current converter is connected with the alternating current plug, and the output end of the alternating current-direct current converter is connected with the power supply; the input end of the transformer is connected with the power supply, and the output end of the transformer is connected with the connection testing device and the alarm respectively.
Optionally, the bus security alarm system further includes: a standby bus and a bus switching device, wherein,
the standby bus is connected with the field device;
the bus switching device is respectively connected with the field bus, the standby bus and the industrial control equipment and is used for switching the field bus into the standby bus through the bus switching device when the industrial control equipment receives an alarm instruction.
The technical scheme of the utility model has the following advantages:
the utility model provides a bus safety alarm system, comprising: the system comprises a field bus, a connection testing device, an alarm and industrial control equipment, wherein the field bus is connected with the field equipment; the connection testing device is respectively connected with the field bus and the alarm and is used for testing the communication condition of the field bus and sending an alarm instruction to the alarm when communication abnormality occurs; the alarm is connected with the industrial control equipment, alarms when receiving an alarm instruction sent by the connection testing device, and sends an alarm signal to the industrial control equipment. The communication test device is arranged specially to conduct real-time communication test on the field bus so as to ensure that the communication condition of the field bus is known in time, and when the communication problem of the field bus is known, the communication fault of the field bus is reported to the industrial control equipment and operators nearby in time through the alarm, so that the operators can find and check the fault condition of the field bus in time.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a bus security alarm system according to one embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a connection testing device according to an embodiment of the present utility model.
Reference numerals illustrate:
the system comprises a 1-field bus, a 2-connection testing device, a 301-first voice alarm, a 302-second voice alarm, 4-industrial control equipment, 5-field equipment, a 6-instruction sending module, a 7-feedback receiving module, an 8-bus switching device, a 9-standby bus, a 10-power module, a 1001-alternating current plug, a 1002-alternating current-direct current converter, a 1003-power supply and a 1004-transformer.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The embodiment of the utility model provides a bus safety alarm system, which is applied to the occasion of monitoring a field bus by an industrial information system, as shown in fig. 1, and comprises: the field bus 1, the connection testing device 2, the alarm and the industrial control equipment 4, wherein the field bus 1 is connected with the field equipment 5; the connection testing device 2 is respectively connected with the field bus 1 and the alarm and is used for testing the communication condition of the field bus 1 and sending an alarm instruction to the alarm when communication abnormality occurs. Specifically, the connection test apparatus 2 is configured to send a connection test signal to the fieldbus 1, and determine, based on the connection test signal, a connection condition of each field device 5 connected to the fieldbus 1, thereby determining whether the fieldbus 1 is a channel. Because the connection testing device 2 is independent of the industrial control equipment 4 and can independently test the communication condition of the field bus 1, the connection testing device 2 can avoid the problem that the industrial control equipment 4 is difficult to acquire the communication condition of the field bus 1 in time due to the fact that the information transmission is not timely caused by the fact that the field bus 1 tests the communication condition.
The alarm is connected with the industrial control equipment 4, alarms when receiving the alarm instruction sent by the connection testing device 2, and sends an alarm signal to the industrial control equipment 4. Specifically, when the connection testing device 2 determines that the fieldbus 1 is not connected, an alarm is given through an alarm, so that related operators are prompted to solve the connection problem of the fieldbus 1 as soon as possible. The alarm is connected with the industrial control equipment 4, and can timely send an alarm signal to the industrial control equipment 4 so that the industrial control equipment 4 can timely acquire the communication condition of the field bus 1. The alarm is a buzzer, a broadcast loudspeaker and/or a sound.
According to the bus safety alarm system provided by the utility model, the special connection testing device 2 is arranged to conduct real-time communication test on the field bus 1, so that the communication condition of the field bus 1 is timely known, when the communication problem of the field bus 1 is known, the communication fault of the field bus 1 is timely reported to the industrial control equipment 4 and operators nearby through the alarm, and therefore the operators can timely find and check the fault condition of the field bus 1.
In a specific embodiment, as shown in fig. 2, the connection testing apparatus 2 includes a command sending module 6 and a feedback receiving module 7, where the command sending module 6 is configured to send a test command to the field device 5 through the fieldbus 1; the feedback receiving module 7 is configured to receive a feedback signal after the field device 5 receives the test instruction. Specifically, by sending a test command and receiving feedback from the field device 5, when the test command fails to send, it is indicated that a problem occurs with the bus connected to the field device 5; when the test command is sent normally but no feedback signal is received, the disconnection of the field device 5 can be rapidly and accurately judged.
In a specific embodiment, the connection testing device 2 further includes a judging module, the judging module is a comparing circuit, a first input end of the comparing circuit is externally connected with the feedback signal sent by the field device 5, a second input end of the comparing circuit is externally connected with a preset alarm threshold, and an output end of the comparing circuit outputs an alarm instruction for judging whether the feedback signal is normal or not, and when the feedback signal is an abnormal signal, the comparing circuit sends the alarm instruction to the alarm. Specifically, there may be a case where the field bus 1 or the field device 5 fails but signal transmission is still possible, but the feedback signal in the failure state fluctuates compared with the normal value, so that the feedback signal can be timely found to alarm by comparing the feedback signal with the preset alarm threshold value through the judging module.
In one embodiment, the field bus 1 is a tree network topology, and the field bus 1 includes multiple stages of switch nodes, where the last stage of the switch nodes is connected to the field device 5. Specifically, the field bus 1 is in a tree network topology structure, has strong foldability, is easy to expand and isolate faults, can access a large number of field devices 5 by connecting the field devices 5 through the last-stage switch node, and only needs to cut off the connection with the last-stage switch node of one field device 5 when the field device 5 fails, so that the interference to other field devices 5 is effectively avoided.
In one embodiment, the bus security alarm system further includes: and the input end of the delay response module is connected with the field bus 1, and the output end of the delay response module is connected with the field device 5 and is used for delaying response feedback signals. Specifically, the delay response module can send test instructions with different delays to each field device 5, so that each field device 5 feeds back with different delay times, and the condition of bandwidth blockage of the field bus 1 is reduced.
In a specific embodiment, the delay response module is a delay relay. Specifically, the delay relay can freely adjust the delay time according to the requirement, and can also be other electronic devices capable of timing, and the delay relay is not particularly limited herein.
In a specific embodiment, the connection testing apparatus 2 further includes: the delay detection module comprises a timer and a comparator, wherein,
the timer is respectively connected with the instruction sending module 6 and the feedback receiving module 7 and is used for collecting the delay feedback time of the field device 5. Specifically, the timing is started after the test instruction is sent out, and the timing is stopped after the feedback information is received.
The first input end of the comparator is externally connected with the delay feedback time acquired by the timer, the second input end of the comparator is externally connected with the delay time of the delay response module, and the output end of the comparator outputs an alarm instruction. Specifically, the delay feedback time is compared with the delay time through the comparator, whether the feedback time is abnormal or not is judged, when the feedback time is abnormal, the fact that the interception equipment intercepts the data of the field bus 1 possibly exists is indicated, and the alarm is timely carried out so that staff can conveniently check the data.
In one embodiment, the alarm includes a first voice alarm 301 and a second voice alarm 302, wherein,
the first voice alarm 301 is disposed on one side of the industrial control device 4 and is connected to the connection testing device 2 and the industrial control device 4 respectively. Specifically, when the connection testing device 2 determines that the field bus 1 has a fault, an alarm signal is timely sent to the industrial control equipment 4 and operators on the side through the first voice alarm 301, and the operators are timely prompted that the field has the fault.
The second voice alarm 302 is disposed on one side of the field device 5 and connected to the connection testing apparatus 2. Specifically, when the connection testing device 2 detects that the field bus 1 has a fault, an operator at the field device 5 is timely prompted to timely troubleshoot the corresponding fault.
In one embodiment, the bus security alarm system further includes: the power module 10 is respectively connected with the connection testing device 2 and the alarm; the power module 10 includes: ac plug 1001, ac-dc converter 1002, power supply 1003, and transformer 1004; an input end of the ac/dc converter 1002 is connected to the ac plug 1001, and an output end is connected to the power supply 1003; the input end of the transformer 1004 is connected with the power supply 1003, and the output end is respectively connected with the testing device 2 and the alarm. Specifically, the ac plug 1001 is set to convert into dc power through the ac-dc converter 1002 to supply power to the power supply 1003, and the power supply 1003 respectively supplies power of different voltages to the connection test device 2 and the alarm device applicable to different voltages through the transformer 1004, so that long-time stable operation of the connection test device 2 and the alarm device is maintained.
In a specific embodiment, the bus security alarm system further includes: a backup bus 9 and a bus switching device 8, wherein the backup bus 9 is connected to the field device 5; the bus switching device 8 is respectively connected with the field bus 1, the standby bus 9 and the industrial control equipment 4, and is used for switching the field bus 1 into the standby bus 9 through the bus switching device 8 when the industrial control equipment 4 receives an alarm instruction. Specifically, when it is determined that the fieldbus 1 fails, in order to avoid inconvenience caused by difficulty in recovering to the field in a short time, all the field devices 5 are switched to the standby bus 9 by the bus switching device 8, and support for data transmission is provided by the standby bus 9, so that line breakdown caused by the failure of the fieldbus 1 is avoided.
In a specific embodiment, the bus security alarm system further includes: and the field bus on-off circuit is connected with the field bus. Specifically, the on-off circuit of the fieldbus includes a plurality of switches respectively provided on the fieldbus branches connected to the respective field devices, and not only can the line abnormality of the fieldbus 1 due to the long-time communication be avoided by the switch control, but also the on-off with the specific field device 5 can be cut off by the switch.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A bus security alarm system, comprising: a field bus, a connection testing device, an alarm and industrial control equipment, wherein,
the field bus is connected with the field device;
the connection testing device is respectively connected with the field bus and the alarm and is used for testing the communication condition of the field bus and sending an alarm instruction to the alarm when communication abnormality occurs;
the alarm is connected with the industrial control equipment, alarms when receiving the alarm instruction sent by the connection testing device, and sends an alarm signal to the industrial control equipment.
2. The bus security alarm system of claim 1, wherein the connection testing device comprises a command sending module and a feedback receiving module, wherein,
the instruction sending module is used for sending a test instruction to the field device through the field bus;
the feedback receiving module is used for receiving a feedback signal after the field device receives the test instruction.
3. The bus safety alarm system according to claim 2, wherein the connection testing device further comprises a judging module, the judging module is a comparing circuit, a first input end of the comparing circuit is externally connected with a feedback signal sent by the field device, a second input end of the comparing circuit is externally connected with a preset alarm threshold, and an output end of the comparing circuit outputs an alarm instruction for judging whether the feedback signal is normal or not, and when the feedback signal is an abnormal signal, the comparing circuit sends the alarm instruction to the alarm.
4. The bus safety warning system of claim 1 wherein the fieldbus is a tree network topology, the fieldbus comprising a plurality of stages of switch nodes, the last of the switch nodes being connected to the field device.
5. The bus security alarm system of claim 2, further comprising: and the input end of the delay response module is connected with the field bus, and the output end of the delay response module is connected with the field device and is used for delaying response feedback signals.
6. The bus security alarm system of claim 5 wherein the delay response module is a delay relay.
7. The bus security alarm system of claim 5, wherein the connection testing device further comprises: the delay detection module comprises a timer and a comparator, wherein,
the timer is respectively connected with the instruction sending module and the feedback receiving module and is used for collecting the delay feedback time of the field device;
the first input end of the comparator is externally connected with the delay feedback time acquired by the timer, the second input end of the comparator is externally connected with the delay time of the delay response module, and the output end of the comparator outputs an alarm instruction.
8. The bus security alarm system of claim 1 wherein the alarm comprises a first voice alarm and a second voice alarm, wherein,
the first voice alarm is arranged on one side of the industrial control equipment and is respectively connected with the connection testing device and the industrial control equipment;
the second voice alarm is arranged on one side of the field device and is connected with the connection testing device.
9. The bus security alarm system of claim 1, further comprising: the power module is respectively connected with the connection testing device and the alarm; the power module includes: the device comprises an alternating current plug, an alternating current-direct current converter, a power supply and a transformer; the input end of the alternating current-direct current converter is connected with the alternating current plug, and the output end of the alternating current-direct current converter is connected with the power supply; the input end of the transformer is connected with the power supply, and the output end of the transformer is connected with the connection testing device and the alarm respectively.
10. The bus security alarm system of claim 1, further comprising: a standby bus and a bus switching device, wherein,
the standby bus is connected with the field device;
the bus switching device is respectively connected with the field bus, the standby bus and the industrial control equipment and is used for switching the field bus into the standby bus through the bus switching device when the industrial control equipment receives an alarm instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320234576.9U CN219627735U (en) | 2023-02-06 | 2023-02-06 | Bus safety alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320234576.9U CN219627735U (en) | 2023-02-06 | 2023-02-06 | Bus safety alarm system |
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| Publication Number | Publication Date |
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| CN219627735U true CN219627735U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320234576.9U Active CN219627735U (en) | 2023-02-06 | 2023-02-06 | Bus safety alarm system |
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- 2023-02-06 CN CN202320234576.9U patent/CN219627735U/en active Active
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