Isolated safety barrier system, control method and device for isolated safety barrier system

Abstract

The application provides an isolated safety barrier system, a control method and device of the isolated safety barrier system. The system comprises: an isolated safety barrier unit for isolating a plurality of mining devices; a switch unit, the switch unit and the isolated safety barrier unit are electrically connected through a plurality of channels, so that the switch unit switches the channels when the channels fail; and a PLC controller, the PLC controller is used for controlling the switch unit to switch the channels when the channels fail. The scheme separates the switch unit from the isolated safety barrier unit, which is equivalent to that the channels of the isolated safety barrier can be externally arranged on the isolated safety barrier. When the channels are switched, two modes can be adopted, one is manual switching of the channels, and the other is PLC program switching of the channels. Regardless of which mode is adopted, the switch cabinet door does not need to be frequently opened and closed, the channels can be directly switched externally, and the service life of the explosion-proof door of the isolated safety barrier is improved.

Description

Technical Field

[0001] This application relates to the field of maintenance technology for isolated safety barriers, and more specifically, to an isolated safety barrier system, a control method for the isolated safety barrier system, and an apparatus. Background Technology

[0002] For coal production enterprises, especially in the explosion-proof areas of coal preparation, the supporting production subsystems with independent functions, such as belt sampling machines, used in the production process, all require on-site installation for power distribution and control. Their power distribution and control cabinets are usually explosion-proof enclosures. Due to the explosion-proof requirements and the special design, daily operations such as inspection and maintenance inside the cabinets are time-consuming and labor-intensive.

[0003] Therefore, the stability and reliability of the control system inside the explosion-proof enclosure are crucial. However, such systems typically use proximity switches as sensors for speed or position detection. This results in a high frequency of switch operation for speed detection in high-speed operating parts, causing the associated isolation safety barriers to operate synchronously. The large number and high frequency of switching signal inputs and conversions shorten the lifespan of the isolation safety barrier signal channel or cause premature fatigue damage. Replacing the signal channel or the isolation safety barrier requires opening the explosion-proof enclosure, a time-consuming and laborious process. For example, the explosion-proof control cabinet for a sampling machine has 40 fixing bolts on the cabinet door, all of which must be removed before the door can be opened. Although the equipment is relatively easy to diagnose and repair, the cumbersome opening process reduces repair efficiency and directly impacts normal production operations, resulting in a shorter lifespan for the explosion-proof enclosure. Summary of the Invention

[0004] The main objective of this application is to provide an isolated safety barrier system, a control method for the isolated safety barrier system, and an apparatus for such a system, so as to at least solve the problem of the short service life of explosion-proof boxes in the prior art.

[0005] To achieve the above objectives, according to one aspect of this application, an isolated safety barrier system is provided, comprising: an isolated safety barrier unit for isolating multiple mining devices; a switching unit electrically connected to the isolated safety barrier unit via multiple channels, such that the switching unit can be controlled to switch the channels in the event of a channel failure; and a PLC controller electrically connected to the isolated safety barrier unit, the PLC controller being used to control the switching unit to switch the channels in the event of a channel failure.

[0006] Optionally, the switching unit includes: a first switch, wherein when the first switch is closed, the mining equipment is electrically connected to a first input terminal of the isolated safety barrier unit via a first channel; a second switch, wherein when the second switch is closed, the mining equipment is electrically connected to a second input terminal of the isolated safety barrier unit via a second channel; a third switch, wherein when the third switch is closed, the mining equipment is electrically connected to a third input terminal of the isolated safety barrier unit via a third channel; and a fourth switch, wherein when the fourth switch is closed, the mining equipment is electrically connected to a fourth input terminal of the isolated safety barrier unit via a fourth channel.

[0007] Optionally, the isolated safety barrier unit includes: a first output terminal electrically connected to the PLC controller, the first output terminal being used to output the signal of the first channel to the PLC controller, and the first output terminal being configured corresponding to the first input terminal; a second output terminal electrically connected to the PLC controller, the second output terminal being used to output the signal of the second channel to the PLC controller, and the second output terminal being configured corresponding to the second input terminal; a third output terminal electrically connected to the PLC controller, the third output terminal being used to output the signal of the third channel to the PLC controller, and the third output terminal being configured corresponding to the third input terminal; and a fourth output terminal electrically connected to the PLC controller, the fourth output terminal being used to output the signal of the fourth channel to the PLC controller, and the fourth output terminal being configured corresponding to the fourth input terminal.

[0008] According to another aspect of this application, a control method for any of the aforementioned isolated safety barrier systems is provided. The method includes: acquiring an alarm signal, wherein the alarm signal is a signal generated when the PLC controller alarms; controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit; determining the alarm cause based on whether the alarm signal is acquired again, wherein the alarm cause is a fault in the mining equipment or a fault in the channel of the isolated safety barrier unit, and switching the channel connecting the switching unit and the isolated safety barrier unit again.

[0009] Optionally, before acquiring the alarm signal, the method further includes: during initialization operation, controlling the initial switch to close, and connecting the switch unit and the isolated safety barrier unit using an initial channel, wherein the initial switch is any one of the switches in the switch unit, and the initial channel is the channel through which the mining equipment is electrically connected to the input terminal of the isolated safety barrier unit when the initial switch is closed.

[0010] Optionally, controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit includes: when the Nth channel is used to connect the switching unit and the isolated safety barrier unit, controlling the Nth switch to continue to close and controlling the N+Kth switch to continue to open, where N≥1 and K>1; controlling the N+1th switch to close, and using the Nth channel and the N+1th channel to operate in parallel.

[0011] Optionally, the cause of the alarm is determined based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolated safety barrier unit, and the channel connecting the switch unit and the isolated safety barrier unit is switched again, including: if the alarm signal is received again, determining that the cause of the alarm is a fault in the mining equipment, controlling the N+1 switch to open, and using the Nth channel to connect the switch unit and the isolated safety barrier unit; if the alarm signal is not received, determining that the cause of the alarm is a fault in the channel of the isolated safety barrier unit, controlling the Nth switch to open, controlling the N+1 switch to remain closed, and using the N+1 channel to connect the switch unit and the isolated safety barrier unit.

[0012] Optionally, after controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit, the method further includes: generating a prompt message when the Mth channel is a fault-free channel and all channels other than the Mth channel are faulty, and the alarm signal is obtained again, wherein the prompt message is used to indicate that the mining equipment has malfunctioned or that the channel of the isolated safety barrier unit has malfunctioned, M is the maximum value of the number of channels, and M≥N.

[0013] Optionally, before acquiring the alarm signal, the method further includes: acquiring the operating information of the mining equipment, wherein the operating information includes one or more of speed, power, and temperature; generating the alarm signal when the operating information is greater than or equal to a preset threshold; and generating the alarm signal when the duration for which the operating information of the mining equipment has not been acquired reaches a target duration.

[0014] According to another aspect of this application, a control device for any of the aforementioned isolated safety barrier systems is provided. The device includes: a first acquisition unit for acquiring an alarm signal, wherein the alarm signal is a signal generated when the PLC controller alarms; a control unit for controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit; and a first processing unit for determining the alarm cause based on whether the alarm signal is acquired again, wherein the alarm cause is a fault in the mining equipment or a fault in the channel of the isolated safety barrier unit, and switching the channel connecting the switching unit and the isolated safety barrier unit again.

[0015] By applying the technical solution of this application, the switching unit and the isolated safety barrier unit are separated. This is equivalent to the channel of the isolated safety barrier being placed outside the isolated safety barrier. There are two ways to switch channels: the first is manual channel switching, and the second is PLC program channel switching. Regardless of the channel switching method, there is no need to frequently open and close the cabinet door. Channel switching can be done directly from the outside, thereby improving the service life of the explosion-proof door of the isolated safety barrier. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of the isolation barrier safety barrier system of this application is shown;

[0018] Figure 2 A schematic diagram showing the connection relationship between the switching unit, the input terminal of the isolation barrier, and the output terminal of the isolation barrier is provided.

[0019] Figure 3 A hardware structure block diagram of a mobile terminal for implementing a control method for an isolated safety barrier system according to an embodiment of this application is shown.

[0020] Figure 4 A schematic flowchart of a control method for an isolated safety barrier system according to an embodiment of this application is shown.

[0021] Figure 5(a) shows a schematic diagram of the first part of the PLC controller logic of this application;

[0022] Figure 5(b) shows a schematic diagram of the second part of the PLC controller logic of this application;

[0023] Figure 6A structural block diagram of a control device for an isolated safety barrier system provided according to an embodiment of this application is shown.

[0024] The above figures include the following reference numerals:

[0025] 102. Processor; 104. Memory; 106. Transmission equipment; 108. Input / output devices; 10. Isolated safety barrier unit; 20. Mining equipment; 30. Switching unit; 40. PLC controller. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] In light of the current state of explosion-proof equipment use in coal production enterprises, an urgent problem to be solved is to enable the rapid switching and modification of the signal channels of vulnerable isolation safety barriers, and to quickly restore their original functions and roles by utilizing intact, modified backup channels, so as to ensure that the system can achieve rapid fault recovery and provide strong support for safe and stable production.

[0030] As described in the background section, the service life of explosion-proof boxes in the prior art is relatively short. To solve the above problems, the embodiments of this application provide an isolated safety barrier system, a control method and device for the isolated safety barrier system.

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] This application provides an isolated safety barrier system, such as Figure 1 As shown, it includes:

[0033] An isolation safety barrier unit 10 is used to isolate multiple mining equipment 20;

[0034] The switching unit 30 is electrically connected to the isolated safety barrier unit through multiple channels, so as to control the switching unit to switch the channels when the channels fail.

[0035] The PLC controller 40 is electrically connected to the aforementioned isolated safety barrier unit. The PLC controller is used to control the aforementioned switching unit to switch the aforementioned channel when the aforementioned channel fails.

[0036] In the above system, the switching unit and the isolated safety barrier unit are separated. This means that the channel of the isolated safety barrier can be placed outside the isolated safety barrier. There are two ways to switch channels: the first is to switch channels manually, and the second is to switch channels through a PLC program. Regardless of which way you switch channels, you no longer need to frequently open and close the cabinet door. You can switch channels directly from the outside, thereby improving the service life of the explosion-proof door of the isolated safety barrier.

[0037] Specifically, this solution independently processes and converts the vulnerable proximity switch signals of the isolated safety barrier channels. This replaces the original situation where multiple signals share one isolation barrier and multiple channels are used in parallel with one isolation barrier per signal, forming a working mode where one channel is in use and three channels are in hot standby. The manual channel switching method involves placing the channel switching switch outside the explosion-proof control cabinet, so that when channel 1 fails, the operating mode can be manually or automatically switched to channel 2, channel 3, or channel 4. The automatic channel switching mode uses a PLC program with an external intermediate relay to effectively control the activation and deactivation of each channel, thus realizing a new approach to quickly and safely resolve faults.

[0038] Specifically, the isolated safety barrier unit includes multiple isolated safety barriers, and the switch unit can include multiple switches. The number of isolated safety barriers and the number of switch units are corresponding, with one switch corresponding to one isolated safety barrier. If one channel is damaged, other channels can still be used.

[0039] Specifically, the solution proposed in this application can reduce the number of times the explosion-proof control box associated with equipment needs to be opened for maintenance, thereby not only improving the enterprise's safety management level but also effectively extending the service life of the explosion-proof box. It enables rapid isolation of fault points and achieves the effect of quickly restoring normal equipment operation by replacing various protection bypasses, thus truly improving efficiency and reducing failures. It can also solve the problem of wasted production costs caused by multiple signals sharing a single isolation barrier, insufficient spare channels, and frequent maintenance and replacement of spare parts.

[0040] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the aforementioned switch unit includes a first switch K0, a second switch K1, a third switch K2, and a fourth switch K3. When the first switch is closed, the mining equipment is electrically connected to the first input terminal IN-1 of the isolated safety barrier unit via a first channel. When the second switch is closed, the mining equipment is electrically connected to the second input terminal IN-2 of the isolated safety barrier unit via a second channel. When the third switch is closed, the mining equipment is electrically connected to the third input terminal IN-3 of the isolated safety barrier unit via a third channel. When the fourth switch is closed, the mining equipment is electrically connected to the fourth input terminal IN-4 of the isolated safety barrier unit via a fourth channel.

[0041] In this scheme, the switching signals of mining equipment can be transmitted to the input terminal of the isolated safety barrier unit through the closing of the switch in the switching unit. This achieves one signal per isolation barrier, forming a working mode of one channel in use and three channels in hot standby. This further ensures that the switching unit in this scheme can be placed outside the isolated safety barrier unit, without having to open the cabinet door of the isolated safety barrier unit to switch channels.

[0042] Specifically, proximity switches can be used to detect operational information in mining equipment.

[0043] In one specific embodiment, such as Figure 1 and Figure 2As shown, the aforementioned isolated safety barrier unit includes a first output terminal OUT0, a second output terminal OUT1, a third output terminal OUT2, and a fourth output terminal OUT3. The first output terminal is electrically connected to the PLC controller and is used to output the signal of the first channel to the PLC controller. The first output terminal is correspondingly configured with the first input terminal. The second output terminal is electrically connected to the PLC controller and is used to output the signal of the second channel to the PLC controller. The second output terminal is correspondingly configured with the second input terminal. The third output terminal is electrically connected to the PLC controller and is used to output the signal of the third channel to the PLC controller. The third output terminal is correspondingly configured with the third input terminal. The fourth output terminal is electrically connected to the PLC controller and is used to output the signal of the fourth channel to the PLC controller. The fourth output terminal is correspondingly configured with the fourth input terminal.

[0044] In this scheme, each output terminal of the isolated safety barrier unit is electrically connected to the PLC controller. This allows the PLC controller to control the corresponding channel to open or close, thereby ensuring that the signal sent by the switching unit can be transmitted to the PLC controller through the output terminal. Subsequently, the PLC controller can automatically switch channels without having to open the cabinet door of the isolated safety barrier unit to switch channels.

[0045] Specifically, the switching signals measured by the proximity switches can be connected to the four input terminals IN-1 to IN-4 of the hazardous area of ​​the isolated safety barrier via an external switching unit. The corresponding four output terminals OUT0 to OUT3 of the safe area are connected in parallel to the PLC controller. During later use, replacement can be carried out in conjunction with other equipment inspections and maintenance before all four channels are exhausted.

[0046] For the isolated safety barrier used for independent signal channel switching, the optimal solution to further reduce the number of times the original system's explosion-proof control cabinet needs to be opened is to place it externally in an easily accessible maintenance location. Similarly, the four-position toggle switch (switch unit) mentioned in the modification also needs to be externally placed in an easily accessible maintenance location because it cannot be modified or have holes drilled in the explosion-proof control cabinet. In summary, the isolated safety barrier for independent signal channel switching and the explosion-proof four-position toggle switch should be independently installed in a newly added small explosion-proof control box. The control cable for the channel modification should then be connected to the control system via a spare lead device. This achieves the goal of maintaining the original functionality while enabling rapid fault handling, fully ensuring the system's safety and reliability and facilitating maintenance.

[0047] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 3This is a hardware structure block diagram of a mobile terminal for a control method of an isolated safety barrier system according to an embodiment of the present invention. Figure 3 As shown, a mobile terminal may include one or more ( Figure 3 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 3 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown.

[0048] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the device information display method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0049] This embodiment provides a control method for an isolated safety barrier system that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0050] Figure 4 This is a flowchart illustrating a control method for an isolated safety barrier system according to an embodiment of this application. Figure 4 As shown, the method includes the following steps:

[0051] Step S201: Obtain an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered;

[0052] Specifically, the PLC controller generates an alarm signal during operation. This alarm signal is a comprehensive alarm signal, which will be generated regardless of whether it is a fault in the mining equipment or a fault in the passage. However, it is impossible to distinguish whether it is a fault in the mining equipment or a fault in the passage.

[0053] Step S202: Control the switch unit to switch the channel connecting the switch unit and the isolated safety barrier unit.

[0054] Specifically, regardless of the type of fault that causes the alarm signal generated by the PLC controller, the channel must be switched first. This way, the channel fault can be determined.

[0055] Step S203: Determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0056] Specifically, if the PLC controller continues to alarm after switching channels, then the channel is not faulty; the problem lies with the mining equipment. Continue using the original channel. If the PLC controller stops alarming after switching channels, then the mining equipment is not faulty; the problem lies with the original channel. In this case, use the new channel and discontinue using the faulty original channel.

[0057] In this embodiment, when the PLC controller alarms, the channel can be switched automatically. If the alarm persists after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm stops after switching channels, the cause of the PLC controller alarm is a channel fault. This automated channel switching method eliminates the need for manual inspection by opening the isolation barrier and safety barrier, thus extending the service life of the explosion-proof door of the isolation safety barrier and significantly reducing labor and time costs.

[0058] Specifically, the entity executing the above control method can be a PLC controller.

[0059] Specifically, the external four-position selector switch (switch unit) in the manual channel switching mode is replaced with four intermediate relays (switches) from K0 to K3. Using PLC programming, when a fault is detected in the first channel signal, the PLC output controls the first channel to disconnect and automatically closes the second channel; when a fault is detected in the second channel signal, the PLC output controls the second channel to disconnect and automatically closes the third channel; when a fault is detected in the third channel signal, the PLC output controls the third channel to disconnect and automatically closes the fourth channel; when a fault is detected in the fourth channel signal, the PLC output prompts the host computer to replace the isolated safety barrier.

[0060] In the specific implementation process, before acquiring the alarm signal, the above method also includes the following steps: under the condition of initialization operation, control the initial switch to close, and use the initial channel to connect the above switch unit and the above isolated safety barrier unit, wherein the above initial switch is any one of the switches in the above switch unit, and the above initial channel is the channel through which the mining equipment and the input terminal of the above isolated safety barrier unit are electrically connected when the above initial switch is closed.

[0061] In this solution, the initial channel is used to connect the switch unit and the isolation safety barrier unit in the initial state. Generally, there are no obstacles when the system is first started, so any channel can be used. This allows the switch unit and the isolation safety barrier unit to be connected during the initial switch without having to open the isolation safety barrier for connection. This further improves the service life of the explosion-proof door of the isolation safety barrier and further reduces labor and time costs.

[0062] Specifically, as shown in Figures 5(a) and 5(b), in the initial state, the default relay K0 is closed, and high-frequency detection signal processing is performed using the isolation channel -0. At the same time, the decrement counter automatically decrements by 1, recording that three channels are still available.

[0063] In the specific implementation process, controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit can be achieved through the following steps: when the Nth channel is used to connect the switching unit and the isolated safety barrier unit, control the Nth switch to continue to close and control the N+Kth switch to continue to open, where N≥1 and K>1; control the N+1th switch to close, and use the Nth channel and the N+1th channel to operate in parallel.

[0064] In this solution, when the PLC controller alarms, the connection channel between the switch unit and the isolated safety barrier unit can be switched. This allows the cause of the alarm to be determined after the PLC controller continues to alarm, without having to open the safety barrier again to reconnect.

[0065] To automatically determine the cause of an alarm, this application determines the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolated safety barrier unit, and switches the channel connecting the switch unit and the isolated safety barrier unit again. This can be achieved through the following steps: if the alarm signal is received again, determine that the cause of the alarm is a fault in the mining equipment, control the N+1 switch to open, and connect the switch unit and the isolated safety barrier unit using the Nth channel; if the alarm signal is not received, determine that the cause of the alarm is a fault in the channel of the isolated safety barrier unit, control the Nth switch to open, control the N+1 switch to remain closed, and connect the switch unit and the isolated safety barrier unit using the N+1 channel.

[0066] In this solution, if the alarm persists after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm does not occur after switching channels, the cause of the PLC controller alarm is a channel fault. This allows for automated channel switching to check the cause of the alarm, eliminating the need for manual inspection by opening the isolation barrier and safety barrier. This further extends the service life of the explosion-proof door of the isolation safety barrier and significantly reduces labor and time costs.

[0067] Specifically, as shown in Figures 5(a) and 5(b), when only channel-0 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks the closed relay K1 and uses the parallel operation of isolation channel-0 and isolation channel-1 to determine the high-frequency detection signal fault point.

[0068] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-1 is unlocked, so that relay K1 is disconnected and channel-0 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-0 is faulty. The output corresponding to channel-0 is automatically unlocked, so that relay K0 is disconnected and channel-1 is used to maintain the working position.

[0069] When relay K1 is closed, high-frequency detection signal processing is performed using isolation channel -1, and the decrement counter automatically decrements by 1, recording that two channels are still available.

[0070] When only channel-1 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks and closes relay K2, and uses isolation channel-1 and isolation channel-2 to operate in parallel to determine the high-frequency detection signal fault point.

[0071] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-2 is unlocked, so that relay K2 is disconnected and channel-1 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-1 is faulty. The output corresponding to channel-1 is automatically unlocked, so that relay K1 is disconnected and channel-2 is used to maintain the working position.

[0072] When relay K2 is closed, high-frequency detection signal processing is performed using isolation channel -2, and the decrement counter automatically decrements by 1, recording that there is still one channel available.

[0073] When only channel-2 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks and closes relay K3, and uses isolation channel-2 and isolation channel-3 to operate in parallel to determine the high-frequency detection signal fault point.

[0074] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-3 is unlocked, so that relay K3 is disconnected and channel-2 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-2 is faulty. The output corresponding to channel-2 is automatically unlocked, so that relay K2 is disconnected and channel-3 is used to maintain the working position.

[0075] When relay K3 is closed, high-frequency detection signal processing is performed using isolation channel -3, and the decrement counter automatically decrements by 1, indicating that no backup channel is available.

[0076] In some embodiments, after controlling the switching unit to switch the channel connecting the switching unit and the isolation safety barrier unit, the method further includes the following steps: if the Mth channel is a fault-free channel and all channels other than the Mth channel are faulty, and the alarm signal is obtained again, a prompt message is generated, wherein the prompt message is used to indicate that the mining equipment has malfunctioned or that the channel of the isolation safety barrier unit has malfunctioned, M is the maximum value of the number of channels, and M≥N.

[0077] In this solution, if the alarm persists after switching channels, but there are no remaining fault-free channels, and the cause of the alarm cannot be determined, a prompt message can be generated to alert staff that the alarm is still present, allowing them to come and inspect the system.

[0078] Specifically, as shown in Figures 5(a) and 5(b), when only channel -3 is in use and a high-frequency detection signal fault alarm occurs, it is impossible to effectively and reliably determine whether the fault is in the safety barrier channel or the field proximity switch. An effective alarm must be issued and a field fault assessment performed. If the fault is in the barrier channel, there are no other channels available for replacement, and an alarm to update the barrier must be triggered. Once the fault has been resolved and the barrier replaced, clicking the system reset button will clear the fault and restore the decrement counter's backup channel reminder function.

[0079] Specifically, the relay mentioned above in this solution is the same as the switch mentioned above.

[0080] In some embodiments, before acquiring the alarm signal, the method further includes the following steps: acquiring the operating information of the mining equipment, wherein the operating information includes one or more of speed, power, and temperature; generating the alarm signal when the operating information is greater than or equal to a preset threshold; and generating the alarm signal when the duration for which the operating information of the mining equipment has not been acquired reaches a target duration.

[0081] In this solution, it is possible to determine whether the operating status of the mining equipment is abnormal or whether the operating information of the mining equipment has not been received for a long period of time. In either of these two situations, the PLC controller will generate an alarm signal. However, this alarm signal is a comprehensive alarm and cannot distinguish which situation caused it. Therefore, the above-mentioned solution of this application is used to determine the cause of the alarm.

[0082] Specifically, mining equipment includes excavators, loaders, mining trucks, and mining drilling rigs. These machines may malfunction if their rotational speed, power, or temperature exceeds a certain range.

[0083] Specifically, abnormal speed of mining equipment generally refers to excessively high or low speed, and the specific value may vary depending on the type of equipment. For example, abnormal speed of an excavator generally refers to a speed exceeding the rated speed by more than 10% or falling below the rated speed by more than 10%.

[0084] Abnormal power output in mining equipment generally refers to power exceeding or falling below the rated power by more than 10%. Specific values ​​may vary depending on the type of equipment. For example, abnormal power output in a loader may occur when it exceeds or falls below the rated power by more than 10%.

[0085] Temperature anomalies in mining equipment generally refer to equipment temperatures exceeding or falling below the rated temperature by more than 10%. The specific temperature range may vary depending on the type of equipment. For example, temperature anomalies in mining drilling rigs may occur when the temperature exceeds or falls below the rated temperature by more than 10%.

[0086] Specifically, the target duration can be 1 hour, 3 minutes, or other values.

[0087] This application also provides a control device for an isolated safety barrier system. It should be noted that the control device for the isolated safety barrier system in this application can be used to execute the control method for the isolated safety barrier system provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0088] The control device for the isolated safety barrier system provided in the embodiments of this application will be described below.

[0089] Figure 6 This is a structural block diagram of a control device for an isolated safety barrier system according to an embodiment of this application. Figure 6 As shown, the device includes:

[0090] The first acquisition unit 100 is used to acquire an alarm signal, wherein the alarm signal is a signal generated when the PLC controller alarms.

[0091] Specifically, the PLC controller generates an alarm signal during operation. This alarm signal is a comprehensive alarm signal, which will be generated regardless of whether it is a fault in the mining equipment or a fault in the passage. However, it is impossible to distinguish whether it is a fault in the mining equipment or a fault in the passage.

[0092] The control unit 200 is used to control the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit.

[0093] Specifically, regardless of the type of fault that causes the alarm signal generated by the PLC controller, the channel must be switched first. This way, the channel fault can be determined.

[0094] The first processing unit 300 is used to determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and to switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0095] Specifically, if the PLC controller continues to alarm after switching channels, then the channel is not faulty; the problem lies with the mining equipment. Continue using the original channel. If the PLC controller stops alarming after switching channels, then the mining equipment is not faulty; the problem lies with the original channel. In this case, use the new channel and discontinue using the faulty original channel.

[0096] In this embodiment, when the PLC controller alarms, the channel can be switched automatically. If the alarm persists after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm stops after switching channels, the cause of the PLC controller alarm is a channel fault. This automated channel switching method eliminates the need for manual inspection by opening the isolation barrier and safety barrier, thus extending the service life of the explosion-proof door of the isolation safety barrier and significantly reducing labor and time costs.

[0097] Specifically, the entity executing the above control method can be a PLC controller.

[0098] Specifically, the external four-position selector switch (switch unit) in the manual channel switching mode is replaced with four intermediate relays (switches) from K0 to K3. Using PLC programming, when a fault is detected in the first channel signal, the PLC output controls the first channel to disconnect and automatically closes the second channel; when a fault is detected in the second channel signal, the PLC output controls the second channel to disconnect and automatically closes the third channel; when a fault is detected in the third channel signal, the PLC output controls the third channel to disconnect and automatically closes the fourth channel; when a fault is detected in the fourth channel signal, the PLC output prompts the host computer to replace the isolated safety barrier.

[0099] In the specific implementation process, the above-mentioned device also includes a second processing unit. The second processing unit is used to control the initial switch to close during initialization operation before acquiring the alarm signal, and to connect the switch unit and the isolation safety barrier unit through an initial channel. The initial switch is any one of the switches in the switch unit, and the initial channel is the channel through which the mining equipment is electrically connected to the input terminal of the isolation safety barrier unit when the initial switch is closed.

[0100] In this solution, the initial channel is used to connect the switch unit and the isolation safety barrier unit in the initial state. Generally, there are no obstacles when the system is first started, so any channel can be used. This allows the switch unit and the isolation safety barrier unit to be connected during the initial switch without having to open the isolation safety barrier for connection. This further improves the service life of the explosion-proof door of the isolation safety barrier and further reduces labor and time costs.

[0101] Specifically, as shown in Figures 5(a) and 5(b), in the initial state, the default relay K0 is closed, and high-frequency detection signal processing is performed using the isolation channel -0. At the same time, the decrement counter automatically decrements by 1, recording that three channels are still available.

[0102] In the specific implementation process, the control unit includes a first control module and a second control module. The first control module is used to control the Nth switch to continue to close and the N+Kth switch to continue to open when the Nth channel is used to connect the above-mentioned switch unit and the above-mentioned isolated safety barrier unit, where N≥1 and K>1. The second control module is used to control the N+1th switch to close, and the Nth channel and the N+1th channel are used to operate in parallel.

[0103] In this solution, when the PLC controller alarms, the connection channel between the switch unit and the isolated safety barrier unit can be switched. This allows the cause of the alarm to be determined after the PLC controller continues to alarm, without having to open the safety barrier again to reconnect.

[0104] To automatically determine the cause of the alarm, the first processing unit of this application includes a first processing module and a second processing module. The first processing module is used to determine that the cause of the alarm is a fault in the mining equipment when the alarm signal is received again, control the N+1 switch to open, and connect the switch unit and the isolation safety barrier unit using the Nth channel. The second processing module is used to determine that the cause of the alarm is a fault in the channel of the isolation safety barrier unit when the alarm signal is not received, control the Nth switch to open, control the N+1 switch to remain closed, and connect the switch unit and the isolation safety barrier unit using the N+1 channel.

[0105] In this solution, if the alarm persists after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm does not occur after switching channels, the cause of the PLC controller alarm is a channel fault. This allows for automated channel switching to check the cause of the alarm, eliminating the need for manual inspection by opening the isolation barrier and safety barrier. This further extends the service life of the explosion-proof door of the isolation safety barrier and significantly reduces labor and time costs.

[0106] Specifically, as shown in Figures 5(a) and 5(b), when only channel-0 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks the closed relay K1 and uses the parallel operation of isolation channel-0 and isolation channel-1 to determine the high-frequency detection signal fault point.

[0107] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-1 is unlocked, so that relay K1 is disconnected and channel-0 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-0 is faulty. The output corresponding to channel-0 is automatically unlocked, so that relay K0 is disconnected and channel-1 is used to maintain the working position.

[0108] When relay K1 is closed, high-frequency detection signal processing is performed using isolation channel -1, and the decrement counter automatically decrements by 1, recording that two channels are still available.

[0109] When only channel-1 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks and closes relay K2, and uses isolation channel-1 and isolation channel-2 to operate in parallel to determine the high-frequency detection signal fault point.

[0110] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-2 is unlocked, so that relay K2 is disconnected and channel-1 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-1 is faulty. The output corresponding to channel-1 is automatically unlocked, so that relay K1 is disconnected and channel-2 is used to maintain the working position.

[0111] When relay K2 is closed, high-frequency detection signal processing is performed using isolation channel -2, and the decrement counter automatically decrements by 1, recording that there is still one channel available.

[0112] When only channel-2 is in use and a high-frequency detection signal fault alarm occurs, the program automatically locks and closes relay K3, and uses isolation channel-2 and isolation channel-3 to operate in parallel to determine the high-frequency detection signal fault point.

[0113] (1) If a high-frequency detection signal fault alarm occurs again, it is not a safety barrier channel fault. The alarm is a field proximity switch fault. At the same time, the output corresponding to channel-3 is unlocked, so that relay K3 is disconnected and channel-2 is used to maintain the working position. (2) If no high-frequency detection signal fault alarm occurs again within 1 hour during normal system operation, it is considered that the safety barrier channel-2 is faulty. The output corresponding to channel-2 is automatically unlocked, so that relay K2 is disconnected and channel-3 is used to maintain the working position.

[0114] When relay K3 is closed, high-frequency detection signal processing is performed using isolation channel -3, and the decrement counter is automatically decremented by 1 to indicate that no backup channel is available.

[0115] In some embodiments, the above-mentioned device further includes a first generation unit, which is used to generate a prompt message after the control of the switch unit to switch the channel connecting the switch unit and the isolation safety barrier unit, when the Mth channel is a fault-free channel and all channels other than the Mth channel are faulty and the alarm signal is obtained again, wherein the prompt message is used to indicate that the mining equipment has malfunctioned or that the channel of the isolation safety barrier unit has malfunctioned, M is the maximum value of the number of channels, M≥N.

[0116] In this solution, if the alarm persists after switching channels, but there are no remaining fault-free channels, and the cause of the alarm cannot be determined, a prompt message can be generated to alert staff that the alarm is still present, allowing them to come and inspect the system.

[0117] Specifically, as shown in Figures 5(a) and 5(b), when only channel -3 is in use and a high-frequency detection signal fault alarm occurs, it is impossible to effectively and reliably determine whether the fault is in the safety barrier channel or the field proximity switch. An effective alarm must be issued and a field fault assessment performed. If the fault is in the barrier channel, there are no other channels available for replacement, and an alarm to update the barrier must be triggered. Once the fault has been resolved and the barrier replaced, clicking the system reset button will clear the fault and restore the decrement counter's backup channel reminder function.

[0118] Specifically, the relay mentioned above in this solution is the same as the switch mentioned above.

[0119] In some embodiments, the above-mentioned device further includes a second acquisition unit, a second generation unit, and a third generation unit. The second acquisition unit is used to acquire the operating information of the mining equipment before acquiring the alarm signal, wherein the operating information includes one or more of speed, power, and temperature. The second generation unit is used to generate the alarm signal when the operating information is greater than or equal to a preset threshold. The third generation unit is used to generate the alarm signal when the duration for which the operating information of the mining equipment has not been acquired reaches a target duration.

[0120] In this solution, it is possible to determine whether the operating status of the mining equipment is abnormal or whether the operating information of the mining equipment has not been received for a long period of time. In either of these two situations, the PLC controller will generate an alarm signal. However, this alarm signal is a comprehensive alarm and cannot distinguish which situation caused it. Therefore, the above-mentioned solution of this application is used to determine the cause of the alarm.

[0121] Specifically, mining equipment includes excavators, loaders, mining trucks, and mining drilling rigs. These machines may malfunction if their rotational speed, power, or temperature exceeds a certain range.

[0122] Specifically, abnormal speed of mining equipment generally refers to excessively high or low speed, and the specific value may vary depending on the type of equipment. For example, abnormal speed of an excavator generally refers to a speed exceeding the rated speed by more than 10% or falling below the rated speed by more than 10%.

[0123] Abnormal power output in mining equipment generally refers to power exceeding or falling below the rated power by more than 10%. Specific values ​​may vary depending on the type of equipment. For example, abnormal power output in a loader may occur when it exceeds or falls below the rated power by more than 10%.

[0124] Temperature anomalies in mining equipment generally refer to equipment temperatures exceeding or falling below the rated temperature by more than 10%. The specific temperature range may vary depending on the type of equipment. For example, temperature anomalies in mining drilling rigs may occur when the temperature exceeds or falls below the rated temperature by more than 10%.

[0125] Specifically, the target duration can be 1 hour, 3 minutes, or other values.

[0126] The control device for the aforementioned isolated safety barrier system includes a processor and a memory. The first acquisition unit, control unit, and first processing unit are all stored as program units in the memory, and the processor executes these program units stored in the memory to achieve the corresponding functions. All of the above modules are located in the same processor; alternatively, the modules may be located in different processors in any combination.

[0127] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem of the short lifespan of explosion-proof enclosures in existing technologies.

[0128] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0129] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the isolated safety barrier system.

[0130] Specifically, the control methods for the isolated safety barrier system include:

[0131] Step S201: Obtain an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered;

[0132] Step S202: Control the switch unit to switch the channel connecting the switch unit and the isolated safety barrier unit.

[0133] Step S203: Determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0134] This invention provides a processor for running a program, wherein the program executes the control method of the isolated safety barrier system.

[0135] Specifically, the control methods for the isolated safety barrier system include:

[0136] Step S201: Obtain an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered;

[0137] Step S202: Control the switch unit to switch the channel connecting the switch unit and the isolated safety barrier unit.

[0138] Step S203: Determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0139] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0140] Step S201: Obtain an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered;

[0141] Step S202: Control the switch unit to switch the channel connecting the switch unit and the isolated safety barrier unit.

[0142] Step S203: Determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0143] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0144] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0145] Step S201: Obtain an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered;

[0146] Step S202: Control the switch unit to switch the channel connecting the switch unit and the isolated safety barrier unit.

[0147] Step S203: Determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and switch the channel connecting the switch unit and the isolation safety barrier unit again.

[0148] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0149] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0150] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0151] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0152] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0153] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0154] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0155] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0156] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0157] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0158] 1) The isolated safety barrier system of this application separates the switching unit from the isolated safety barrier unit. This is equivalent to the channel of the isolated safety barrier being placed outside the isolated safety barrier. There are two ways to switch channels: the first is manual channel switching, and the second is PLC program channel switching. Regardless of the channel switching method, there is no need to frequently open and close the cabinet door. Channel switching can be done directly from the outside, thereby improving the service life of the explosion-proof door of the isolated safety barrier.

[0159] 2) The control method of the isolated safety barrier system of this application can automatically switch channels when the PLC controller alarms. If the alarm still occurs after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm does not occur after switching channels, the cause of the PLC controller alarm is a channel fault. In this way, the cause of the alarm can be checked by automatically switching channels, eliminating the need to manually open the isolated safety barrier for inspection. This improves the service life of the explosion-proof door of the isolated safety barrier and greatly reduces labor and time costs.

[0160] 3) The control device of the isolated safety barrier system of this application can automatically switch channels when the PLC controller alarms. If the alarm still occurs after switching channels, the cause of the PLC controller alarm is a fault in the mining equipment. If the alarm does not occur after switching channels, the cause of the PLC controller alarm is a channel fault. In this way, the cause of the alarm can be checked by automatically switching channels, eliminating the need to open the isolated safety barrier for manual inspection. This improves the service life of the explosion-proof door of the isolated safety barrier and greatly reduces labor and time costs.

[0161] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An isolated safety barrier system, characterized in that, include: An isolated safety barrier unit, comprising multiple isolated safety barriers, is used to isolate multiple mining equipment. A switching unit is electrically connected to the isolated safety barrier unit via multiple channels, so as to control the switching unit to switch the channel when the channel fails; A PLC controller is electrically connected to the isolated safety barrier unit. The PLC controller is used to control the switching unit to switch the channel when the channel fails. The switching unit is separated from the isolated safety barrier unit. The isolated safety barrier unit is installed inside the explosion-proof cabinet, and the switching unit is installed outside the explosion-proof cabinet. The switching channel is divided into two methods: manual switching channel and PLC program switching channel. The switching unit includes: a first switch, wherein when the first switch is closed, the mining equipment is electrically connected to the first input terminal of the isolated safety barrier unit through a first channel; The second switch, when closed, connects the mining equipment to the second input terminal of the isolated safety barrier unit via a second channel; the third switch, when closed, connects the mining equipment to the third input terminal of the isolated safety barrier unit via a third channel; the fourth switch, when closed, connects the mining equipment to the fourth input terminal of the isolated safety barrier unit via a fourth channel; the number of isolated safety barriers corresponds to the number of switches, with one switch corresponding to one isolated safety barrier, forming a working mode of one channel in use and three channels in hot standby.

2. The isolated safety barrier system according to claim 1, characterized in that, The isolated safety barrier unit includes: The first output terminal is electrically connected to the PLC controller. The first output terminal is used to output the signal of the first channel to the PLC controller. The first output terminal is configured to correspond to the first input terminal. The second output terminal is electrically connected to the PLC controller. The second output terminal is used to output the signal of the second channel to the PLC controller. The second output terminal is configured to correspond to the second input terminal. The third output terminal is electrically connected to the PLC controller. The third output terminal is used to output the signal of the third channel to the PLC controller. The third output terminal is configured to correspond to the third input terminal. The fourth output terminal is electrically connected to the PLC controller. The fourth output terminal is used to output the signal of the fourth channel to the PLC controller. The fourth output terminal is configured to correspond to the fourth input terminal.

3. A control method for the isolated safety barrier system as described in claim 1 or 2, characterized in that, The method includes: Acquire an alarm signal, wherein the alarm signal is a signal generated by the PLC controller when an alarm is triggered; Control the switching unit to switch the channel connected between the switching unit and the isolated safety barrier unit; Based on whether the alarm signal is received again, the cause of the alarm is determined, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolated safety barrier unit, and the channel connecting the switching unit and the isolated safety barrier unit is switched again. Controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit includes: when the Nth channel is used to connect the switching unit and the isolated safety barrier unit, controlling the Nth switch to continue to close and controlling the N+Kth switch to continue to open, where N≥1 and K>1; controlling the N+1th switch to close, and using the Nth channel and the N+1th channel to operate in parallel.

4. The method according to claim 3, characterized in that, Before acquiring the alarm signal, the method further includes: During initial operation, the initial switch is closed, and the initial channel connects the switch unit and the isolated safety barrier unit. The initial switch is any one of the switches in the switch unit, and the initial channel is the channel through which the mining equipment is electrically connected to the input terminal of the isolated safety barrier unit when the initial switch is closed.

5. The method according to claim 3, characterized in that, Based on whether the alarm signal is received again, the cause of the alarm is determined, wherein the cause of the alarm is a malfunction of the mining equipment or a channel malfunction of the isolated safety barrier unit, and the channel connecting the switching unit and the isolated safety barrier unit is switched again, including: If the alarm signal is received again, and the cause of the alarm is determined to be a fault in the mining equipment, the N+1th switch is controlled to open, and the Nth channel is used to connect the switch unit and the isolated safety barrier unit. If no alarm signal is received, the cause of the alarm is determined to be a channel failure of the isolated safety barrier unit. The Nth switch is controlled to open, and the N+1th switch is controlled to remain closed. The N+1th channel is used to connect the switch unit and the isolated safety barrier unit.

6. The method according to claim 3, characterized in that, After controlling the switching unit to switch the channel connecting the switching unit and the isolated safety barrier unit, the method further includes: If the Mth channel is a fault-free channel and all channels other than the Mth channel are faulty, and the alarm signal is received again, a prompt message is generated. The prompt message is used to indicate that the mining equipment has malfunctioned or that the channel of the isolation safety barrier unit has malfunctioned. M is the maximum number of channels, and M≥N.

7. The method according to claim 3, characterized in that, Before acquiring the alarm signal, the method further includes: Obtain the operating information of the mining equipment, wherein the operating information includes one or more of the following: rotational speed, power, and temperature; When the operating information is greater than or equal to a preset threshold, the alarm signal is generated; If the duration for which the operating information of the mining equipment has not been obtained reaches the target duration, the alarm signal is generated.

8. A control device for an isolated safety barrier system as described in claim 1 or 2, characterized in that, The device includes: The first acquisition unit is used to acquire an alarm signal, wherein the alarm signal is a signal generated when the PLC controller alarms; A control unit is used to control the switching unit to switch the channel connected between the switching unit and the isolated safety barrier unit; The first processing unit is configured to determine the cause of the alarm based on whether the alarm signal is received again, wherein the cause of the alarm is a fault in the mining equipment or a fault in the channel of the isolation safety barrier unit, and to switch the channel connecting the switching unit and the isolation safety barrier unit again.

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