Safety interlocking monitoring system

Abstract

The utility model discloses a safety interlocking monitoring system. The safety interlocking monitoring system comprises a cabinet arranged beside a station track, a monitoring unit arranged on the cabinet, a cabinet control unit, an alarm unit, a first communication unit, a second communication unit and a dispatching center control unit, wherein the monitoring unit is in communication connection with the dispatching center control unit, and the first communication unit is in communication connection with the second communication unit; the monitoring unit is used for monitoring locomotive in-out / in-storage operation pictures and contact network power supply / outage operation pictures of on-site maintainers and sending the pictures to the dispatching center control unit; and the cabinet control unit is electrically connected with the alarm unit and is used for outputting alarm information to the alarm unit when the input operation instruction is inconsistent with the preset operation instruction. Interconnection confirmation between the maintainer and the dispatching center can be achieved, the problems of operation instruction errors, misoperation and misoperation and the like in the maintenance process are avoided, and it is guaranteed that the maintenance operation can be executed according to the specified operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of motor vehicle depot maintenance, in particular to a safety interlocking monitoring system. Background Art

[0002] The inspection depot of a locomotive depot is the area where locomotives are inspected and maintained. The contact network in the depot needs to be frequently powered on and off to meet the needs of the operation. Usually, maintenance personnel perform operations such as powering on and off the contact network according to the operation prompts and strictly follow the operating procedures. However, once any action outside the operating procedures is made due to human negligence, such as misoperation, it may cause a serious safety accident, directly leading to risks to personal safety and equipment safety. Utility Model Content

[0003] The utility model provides a safety interlock monitoring system to provide a safe and reliable supervision system, improve the safety and reliability of maintenance operations, and avoid causing safety risks.

[0004] According to one aspect of the utility model, a safety interlock monitoring system is provided, the safety interlock monitoring system comprising: a cabinet arranged beside a track, a monitoring unit, a cabinet control unit and an alarm unit arranged on the cabinet, as well as a first communication unit, a second communication unit and a dispatch center control unit;

[0005] Wherein, the monitoring unit is communicatively connected with the dispatch center control unit, and the first communication unit is communicatively connected with the second communication unit;

[0006] The monitoring unit is used to monitor the operation screen of the locomotive in / out operation and the overhead line power supply / off operation by the on-site maintenance personnel and send them to the control unit of the dispatching center;

[0007] The cabinet control unit is electrically connected to the alarm unit and is used to output alarm information to the alarm unit when the input operation instruction is inconsistent with the preset operation instruction.

[0008] Optionally, the safety interlock monitoring system also includes: an access control unit and a face recognition unit arranged on the cabinet; wherein the access control unit is electrically connected to the face recognition unit; and the face recognition unit is used to perform face information recognition during climbing operations.

[0009] Optionally, the safety interlock monitoring system further includes a card issuing machine, and the card issuing machine is electrically connected to the access control unit.

[0010] Optionally, the safety interlock monitoring system further includes a touch screen electrically connected to the cabinet control unit.

[0011] Optionally, the monitoring unit is a monitoring camera.

[0012] Optionally, the cabinet control unit is a PLC controller.

[0013] Optionally, the first communication unit and the second communication unit are walkie-talkies.

[0014] Optionally, the alarm unit is an audible and visual alarm.

[0015] Optionally, the cabinet is also provided with a contact network status indication unit, an isolating switch status indication unit, a grounding rod status indication unit, a maintenance depot door status indication unit and a ferry board status indication unit, and the contact network status indication unit, the isolating switch status indication unit, the grounding rod status indication unit, the maintenance depot door status indication unit and the ferry board status indication unit are all electrically connected to the cabinet control unit.

[0016] Optionally, a display unit is further provided on the cabinet, and the display unit is electrically connected to the monitoring unit.

[0017] The technical solution of the embodiment of the utility model provides a safety interlock monitoring system, which includes: a cabinet arranged beside the track, a monitoring unit, a cabinet control unit and an alarm unit arranged on the cabinet, as well as a first communication unit, a second communication unit and a dispatching center control unit; wherein the monitoring unit is communicatively connected with the dispatching center control unit, and the first communication unit is communicatively connected with the second communication unit; the monitoring unit is used for monitoring the operation screen of the locomotive in / out operation and the contact network power supply / off operation by on-site maintenance personnel and sending them to the dispatching center control unit; the cabinet control unit is electrically connected with the alarm unit, and is used for outputting alarm information to the alarm unit when the input operation instruction is inconsistent with the preset operation instruction. It can be seen that by setting up a monitoring unit, a cabinet control unit, a first communication unit, a second communication unit and a dispatching center control unit, real-time monitoring of the locomotive in / out of storage operations and the contact network power supply / off operations by on-site maintenance personnel can be achieved, and the on-site maintenance personnel and the dispatching center can be interconnected and confirmed through the first communication unit and the second communication unit to avoid problems such as errors in operating instructions and misoperations during the maintenance process, thereby ensuring that the maintenance work can be performed in accordance with the prescribed operating procedures, thereby improving the safety and reliability of the maintenance work.

[0018] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a principle structure block diagram of a safety interlock monitoring system provided in an embodiment of the utility model;

[0021] Figure 2 It is a side view structural diagram of a cabinet provided in an embodiment of the utility model;

[0022] Figure 3 It is a front view of the cabinet provided in the embodiment of the utility model;

[0023] Figure 4 It is a left view of the cabinet provided in the embodiment of the utility model;

[0024] Figure 5 is a top view of a cabinet provided in an embodiment of the utility model;

[0025] Figure 6 The cabinet provided in the embodiment of the utility model Figure 4 A-direction view in the figure;

[0026] Figure 7 is a rear view of a cabinet provided in an embodiment of the utility model;

[0027] Figure 8 It is a principle structure block diagram of another safety interlock monitoring system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Figure 1 It is a principle structure block diagram of a safety interlock monitoring system provided in an embodiment of the utility model. Figure 2 is a side view structural diagram of a cabinet provided in an embodiment of the utility model, Figure 3 is a front view of the cabinet provided in the embodiment of the utility model, Figure 4 It is a left view of the cabinet provided in the embodiment of the utility model. Figure 5 is a top view of a cabinet provided in an embodiment of the utility model, Figure 6 The cabinet provided in the embodiment of the utility model Figure 4 A-direction view in Figure 7 2 is a rear view of the cabinet provided in the embodiment of the utility model. Figures 1 to 7 The safety interlock monitoring system includes: a cabinet 100 arranged beside the track, a monitoring unit 10, a cabinet control unit 20 and an alarm unit 30 arranged on the cabinet 100, and a first communication unit 40, a second communication unit 50 and a dispatch center control unit 60; wherein the monitoring unit 10 is communicatively connected with the dispatch center control unit 60, and the first communication unit 40 is communicatively connected with the second communication unit 50; the monitoring unit 10 is used to monitor the operation screen of the locomotive in / out operation and the contact network power supply / off operation by the on-site maintenance personnel and send them to the dispatch center control unit 60; the cabinet control unit 20 is electrically connected with the alarm unit 30, and is used to output alarm information to the alarm unit 30 when the input operation instruction is inconsistent with the preset operation instruction.

[0031] The cabinet 100 can be arranged on the ground at both ends of the track in the maintenance depot of the motor vehicle depot. The cabinet 100 is welded and formed by international sheet metal material for installing all components.

[0032] For example, the dimensions of the cabinet may be: 800*630*2100 mm. In addition, the dimensions of the cabinet may also be other parameters, which may be set according to actual conditions and are not specifically limited here.

[0033] The preset operation instruction may be pre-set in the cabinet control unit 20. The cabinet control unit 20 may determine whether the input operation instruction is consistent with the preset operation instruction by using an existing comparison and judgment program, which will not be described in detail.

[0034] Among them, the preset operation instructions can be the prerequisites for contact network power supply / power off, the preparatory operations for locomotive entry / exit, and other instructions. They can be set according to actual conditions and are not specifically limited here.

[0035] The monitoring unit 10 is used to monitor and store the operation screen of the locomotive in / out operation and the contact network power supply / off operation by the on-site maintenance personnel in real time and send it to the dispatch center control unit 60. The first communication unit 40 and the second communication unit 50 are movable communication devices, which are used to realize the communication between the on-site maintenance personnel and the backstage dispatching personnel, so as to realize the interconnection confirmation of the information related to the locomotive in / out operation and the contact network power supply / off operation.

[0036] The monitoring unit 10 may be arranged on the top of the cabinet 100. Figure 2 As shown, in order to more comprehensively monitor the operation screen of on-site maintenance personnel.

[0037] Exemplarily, the first communication unit 40 is held by the on-site maintenance personnel, and the second communication unit 50 is held by the backstage dispatcher. Exemplarily, taking the locomotive storage operation as an example, the backstage dispatcher obtains the on-site maintenance personnel's operation screen for the locomotive storage operation from the dispatch center control unit 60 in real time (such as the preparation operation before the locomotive storage, etc., which can be set according to the actual operation requirements, and is not specifically limited here), and judges whether the operation of the on-site maintenance personnel meets the operation specification requirements according to the operation screen of the on-site maintenance personnel. If not, the dispatcher communicates with the on-site maintenance personnel through the second communication unit 50, and sends information such as operation errors to prompt the on-site maintenance personnel to make changes in time. If satisfied, the dispatcher communicates with the on-site maintenance personnel through the second communication unit 50, and sends a locomotive storage signal. The on-site maintenance personnel receives the locomotive storage signal sent by the dispatcher through the first communication unit 40, confirms whether the locomotive is stored on site, and after confirming that the locomotive is stored, reports to the dispatcher through the first communication unit 40, thereby completing the locomotive storage operation. It can be seen that by setting up the monitoring unit 10, the first communication unit 40, the second communication unit 50 and the dispatching center control unit 60, the interconnection confirmation between the on-site maintenance personnel and the background dispatching personnel can be achieved, thereby ensuring the smooth progress of the locomotive storage operation, avoiding safety accidents such as misoperation and misaction, and improving the safety, reliability and efficiency of the maintenance operation of the EMU.

[0038] Exemplarily, taking the locomotive outbound operation as an example, the backstage dispatcher obtains the operation screen of the locomotive outbound operation by the on-site maintenance personnel in real time from the dispatch center control unit 60 (such as the preparation operation before the locomotive is outbound, etc., which can be set according to the actual operation requirements, and is not specifically limited here), and judges whether the operation of the on-site maintenance personnel meets the operation specification requirements according to the operation screen of the on-site maintenance personnel. If not, the dispatcher communicates with the on-site maintenance personnel through the second communication unit 50, and sends information such as operation errors to prompt the on-site maintenance personnel to make changes in time. If satisfied, the dispatcher communicates with the on-site maintenance personnel through the second communication unit 50, and sends a locomotive outbound signal. The on-site maintenance personnel receives the locomotive outbound signal sent by the dispatcher through the first communication unit 40, confirms whether the locomotive is outbound on site, and after confirming that the locomotive is outbound, reports to the dispatcher through the first communication unit 40, thereby completing the locomotive outbound operation. It can be seen that by setting up the monitoring unit 10, the first communication unit 40, the second communication unit 50 and the dispatching center control unit 60, the interconnection confirmation between the on-site maintenance personnel and the background dispatching personnel can be achieved, thereby ensuring the smooth progress of the locomotive outbound operation, avoiding safety accidents such as misoperation and misaction, and improving the safety, reliability and efficiency of the EMU maintenance operation.

[0039] Exemplarily, taking the contact network power supply operation as an example, the background dispatching personnel obtains the operation screen of the contact network power supply operation of the on-site maintenance personnel in real time from the dispatching center control unit 60 (such as the preparatory work before the contact network power supply, etc., which can be set according to the actual operation requirements, and is not specifically limited here), and judges whether the operation of the on-site maintenance personnel meets the preconditions (such as the relevant specifications of the contact network power supply operation, etc., which can be set in advance in the cabinet control unit 20 through the program) according to the operation screen of the on-site maintenance personnel. If not satisfied, the dispatching personnel communicates with the on-site maintenance personnel through the second communication unit 50, and sends information such as failure to meet the preconditions or operation errors, and sends an alarm message through the alarm unit 30, and the next step can be performed after the alarm is eliminated. If satisfied, the dispatching personnel communicates with the on-site maintenance personnel through the second communication unit 50, and sends a contact network closing signal. After receiving the contact network closing signal sent by the dispatcher through the first communication unit 40, the on-site maintenance personnel perform operations such as power supply of the contact network disconnector, automatic power testing, and electric grounding rod hanging on the cabinet, and report to the dispatcher through the first communication unit 40 after the operation process is completed, thereby completing the contact network power supply operation. It can be seen that by setting the monitoring unit 10, the first communication unit 40, the second communication unit 50 and the dispatch center control unit 60, the interconnection confirmation between the on-site maintenance personnel and the background dispatcher can be realized, thereby ensuring the smooth progress of the contact network power supply operation, avoiding safety accidents such as misoperation and misoperation, and improving the safety, reliability and efficiency of the maintenance operation of the EMU.

[0040] Exemplarily, taking the contact network power-off operation as an example, the background dispatching personnel obtains the operation screen of the contact network power-off operation of the on-site maintenance personnel in real time from the dispatching center control unit 60 (such as the preparatory work before the contact network power-off, etc., which can be set according to the actual operation requirements, and is not specifically limited here), and judges whether the operation of the on-site maintenance personnel meets the preconditions (such as the relevant specifications of the contact network power-off operation, etc., which can be set in advance in the cabinet control unit 20 through the program) according to the operation screen of the on-site maintenance personnel. If not satisfied, the dispatching personnel communicates with the on-site maintenance personnel through the second communication unit 50, and sends information such as failure to meet the preconditions or operation errors, and sends an alarm message through the alarm unit 30, and the next step can be performed after the alarm is eliminated. If satisfied, the dispatching personnel communicates with the on-site maintenance personnel through the second communication unit 50, and sends a contact network trip signal. After receiving the contact network disconnection signal sent by the dispatcher through the first communication unit 40, the on-site maintenance personnel perform operations such as powering off the contact network disconnector, automatic power testing, and removing the electric grounding rod on the cabinet, and report to the dispatcher through the first communication unit 40 after the operation process is completed, thereby completing the contact network power-off operation. It can be seen that by setting the monitoring unit 10, the first communication unit 40, the second communication unit 50 and the dispatch center control unit 60, the interconnection confirmation between the on-site maintenance personnel and the background dispatcher can be realized, thereby ensuring the smooth progress of the contact network power supply operation, avoiding safety accidents such as misoperation and misoperation, and improving the safety, reliability and efficiency of the maintenance operation of the EMU.

[0041] The dispatch center control unit 60 may be a background host computer, etc., and may be specifically configured according to actual conditions, and is not specifically limited here.

[0042] The technical solution of this embodiment provides a safety interlock monitoring system, which includes: a cabinet arranged next to the track, a monitoring unit, a cabinet control unit and an alarm unit arranged on the cabinet, as well as a first communication unit, a second communication unit and a dispatching center control unit; wherein the monitoring unit is communicatively connected to the dispatching center control unit, and the first communication unit is communicatively connected to the second communication unit; the monitoring unit is used to monitor the locomotive in / out operation screen and the contact network power supply / off operation screen by on-site maintenance personnel and send them to the dispatching center control unit; the cabinet control unit is electrically connected to the alarm unit, and is used to output alarm information to the alarm unit when the input operation instruction is inconsistent with the preset operation instruction. It can be seen that by setting up a monitoring unit, a cabinet control unit, a first communication unit, a second communication unit and a dispatching center control unit, real-time monitoring of the locomotive in / out of storage operations and the contact network power supply / off operations by on-site maintenance personnel can be achieved, and the on-site maintenance personnel and the dispatching center can be interconnected and confirmed through the first communication unit and the second communication unit to avoid problems such as errors in operating instructions and misoperations during the maintenance process, thereby ensuring that the maintenance work can be performed in accordance with the prescribed operating procedures, thereby improving the safety and reliability of the maintenance work.

[0043] Figure 8 It is a principle structure block diagram of another safety interlock monitoring system provided in the embodiment of the utility model. Based on the above embodiment, optionally, refer to Figure 8 The safety interlock monitoring system also includes: an access control unit 70 and a face recognition unit 80 arranged on the cabinet 100; wherein the access control unit 70 is electrically connected to the face recognition unit 80; the face recognition unit 80 is used to perform face information recognition during the climbing operation.

[0044] The access control unit 70 and the face detection unit 80 are also connected to the cabinet control unit 20 .

[0045] Among them, maintenance personnel need to go through the registration and cancellation process before climbing to the top. During registration, the maintenance personnel perform facial recognition through the facial recognition unit 80, and enter the maintenance information (such as the maintenance personnel's work number, team information, etc.). The cabinet control unit 20 confirms whether the prerequisites for the climbing operation are met according to the pre-set procedure, and sends the climbing authority information to the access control unit 70 after confirmation. After obtaining the climbing authority, the maintenance personnel can directly perform facial recognition at the platform door (such as a three-story work platform). The access control control unit 70 opens the access control according to the climbing authority information and the acquired facial recognition information, so that the maintenance personnel can enter the climbing operation. Similarly, when the maintenance personnel complete the climbing operation, facial recognition is performed through the above method to cancel the record. The entire process forms a closed loop, and the operation information is archived. This can ensure the safety of information management of climbing operations in the EMU maintenance depot, avoid safety accidents such as misoperation in climbing operations, improve the intelligence, informatization and automation of the safety interlocking monitoring system, improve the work efficiency, safety and reliability of maintenance operations, ensure the safe operation of maintenance operations, and greatly improve the work efficiency of maintenance personnel, further enhancing the value of my country's locomotive maintenance technology.

[0046] Optionally, continue to refer to Figure 8 The safety interlock monitoring system also includes a card issuing machine, and the card issuing machine 90 is electrically connected to the access control unit 70.

[0047] Among them, after the maintenance personnel perform facial recognition through the facial recognition unit 80 and enter the maintenance information (such as the maintenance personnel's work number, team information, etc.), the cabinet control unit 20 confirms whether the pre-conditions for the climbing operation are met according to the pre-set program, and after confirmation, sends the climbing authority information to the access control unit 70 and the card issuing machine 90. The maintenance personnel can climb to the top by facial recognition or by collecting a card. Similarly, the maintenance personnel can cancel the record by facial recognition or by collecting a card. Therefore, by providing facial recognition and swiping a card to climb to the top or cancel the record, the work efficiency of the maintenance personnel can be improved.

[0048] Optionally, continue to refer to Figures 2 to 8 The safety interlock monitoring system also includes a touch screen 201 , which is electrically connected to the cabinet control unit 20 .

[0049] Among them, the touch screen is used for interconnection and mutual control operations when maintenance personnel perform operations according to the operating procedures.

[0050] Optionally, the monitoring unit is a monitoring camera.

[0051] Among them, the monitoring camera can be a high-precision camera, and the specific accuracy and model can be set according to actual conditions, and no specific restrictions are made here.

[0052] Optionally, the cabinet control unit is a PLC controller.

[0053] Optionally, the first communication unit and the second communication unit are walkie-talkies.

[0054] Optionally, the alarm unit is an audible and visual alarm.

[0055] Among them, the alarm unit can also be a voice alarm device, etc., which can be set according to actual conditions and is not specifically limited here.

[0056] Optionally, continue to refer to Figures 2 to 8 The cabinet is also provided with a contact network status indication unit 101, an isolating switch status indication unit 102, a grounding rod status indication unit 103, a maintenance depot door status indication unit 104 and a ferry status indication unit 105. The contact network status indication unit 101, the isolating switch status indication unit 102, the grounding rod status indication unit 103, the maintenance depot door status indication unit 104 and the ferry status indication unit 105 are all electrically connected to the cabinet control unit 20.

[0057] Among them, by setting the contact network status indication unit 101, the isolating switch status indication unit 102, the grounding rod status indication unit 103, the maintenance depot door status indication unit 104 and the ferry status indication unit 105, relevant personnel can be prompted when the corresponding operation (such as hanging and removing pole operations) makes an error or misoperation.

[0058] The contact network status indication unit 101 includes a contact network power indicator and a contact network power-off indicator. The disconnector status indication unit 102 includes a disconnector closing indicator and a disconnector opening indicator. The grounding rod status indication unit 103 includes a grounding rod unhooking indicator and a grounding rod hanging indicator. The maintenance depot door status indication unit 104 includes a door opening indicator and a door closing indicator. The bridge board status indication unit 105 includes a receiving position indicator.

[0059] In addition, the cabinet is also equipped with an emergency stop button and a power on and off button.

[0060] Optionally, continue to refer to Figures 2 to 8 A display unit 202 is also provided on the cabinet, and the display unit 202 is electrically connected to the monitoring unit 10.

[0061] Among them, by setting up the monitoring unit 10 and the display unit 202, the efficiency of the interconnection and mutual control between the on-site maintenance personnel and the dispatching personnel can be further increased, thereby ensuring the safe and reliable implementation of the maintenance work.

[0062] The operating environment of the safety interlock monitoring system is: it can be set up indoors; the ambient temperature is: -10℃-45℃; the relative humidity is less than or equal to 95%; the power supply conditions are: AC 220V (±10%), frequency 50Hz power supply.

[0063] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0064] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A safety interlock monitoring system, characterized in that: include: A cabinet arranged beside a track, a monitoring unit, a cabinet control unit and an alarm unit arranged on the cabinet, as well as a first communication unit, a second communication unit and a dispatch center control unit; Wherein, the monitoring unit is communicatively connected with the dispatch center control unit, and the first communication unit is communicatively connected with the second communication unit; The monitoring unit is used to monitor the operation screen of the locomotive in / out operation and the overhead line power supply / off operation by the on-site maintenance personnel and send them to the control unit of the dispatching center; The cabinet control unit is electrically connected to the alarm unit and is used to output alarm information to the alarm unit when the input operation instruction is inconsistent with the preset operation instruction.

2. The safety interlock monitoring system according to claim 1, characterized in that: Also includes: An access control unit and a face recognition unit arranged on the cabinet; wherein the access control unit is electrically connected to the face recognition unit; and the face recognition unit is used for performing face information recognition during climbing operations.

3. The safety interlock monitoring system according to claim 2, characterized in that: It also includes a card issuing machine, which is electrically connected to the access control unit.

4. The safety interlock monitoring system according to claim 1, characterized in that: It also includes a touch screen which is electrically connected to the cabinet control unit.

5. The safety interlock monitoring system according to claim 1, characterized in that: The monitoring unit is a monitoring camera.

6. The safety interlock monitoring system according to claim 1, characterized in that: The cabinet control unit is a PLC controller.

7. The safety interlock monitoring system according to claim 1, characterized in that: The first communication unit and the second communication unit are walkie-talkies.

8. The safety interlock monitoring system according to claim 1, characterized in that: The alarm unit is an audible and visual alarm.

9. The safety interlock monitoring system according to claim 1, characterized in that: The cabinet is also provided with a contact network status indication unit, an isolating switch status indication unit, a grounding rod status indication unit, a maintenance depot door status indication unit and a ferry board status indication unit. The contact network status indication unit, the isolating switch status indication unit, the grounding rod status indication unit, the maintenance depot door status indication unit and the ferry board status indication unit are all electrically connected to the cabinet control unit.

10. The safety interlock monitoring system according to claim 1, characterized in that: The cabinet is also provided with a display unit, and the display unit is electrically connected to the monitoring unit.

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