Platform door monitoring circuit, method and device

Abstract

The present invention provides a platform door monitoring circuit, method and device, the platform door monitoring circuit includes: a door closing relay assembly, the door closing relay assembly has an input end and a working output end; a monitoring relay assembly, the monitoring relay assembly has an input end and a working output end, and the monitoring relay assembly is a European standard safety relay; a platform door device, the input end of the door closing relay assembly is electrically connected to the platform door device, and is used to collect the switch state of the platform door, and the working output end of the door closing relay assembly is connected to the input end of the monitoring relay assembly to form a control loop; an interlocking device, the monitoring end of the interlocking device is electrically connected to the working output end of the monitoring relay assembly to form a monitoring loop. The platform door monitoring circuit, method and device provided by the present invention can enable the interlocking device to quickly monitor the switch state of the platform door, and can reduce the space occupancy, realize the miniaturization and integration of the monitoring circuit, and improve the safety performance.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a platform door monitoring circuit, method and device. Background Art

[0002] For urban rail transit, platform doors are often installed at the platform. During the operation of rail transit, the opening and closing status of the platform doors needs to be monitored. Currently, the opening and closing status of the platform doors can be monitored by the interlocking device through the door closing relay component connected to the platform door device. The opening and closing status of the platform door and the working status of the control circuit can be monitored by monitoring the opening and closing status of the door closing relay component.

[0003] At present, in urban rail transit, gravity-type relays are mainly used as monitoring relay components to monitor the switching status of door closing relay components. Gravity-type relays can force the contacts to open by the gravity of the armature when a fault occurs, thereby ensuring the safety of the monitoring circuit. However, gravity-type relays are large in size and occupy a large space in the installation cabinet, which is not conducive to the miniaturization and integration of the monitoring system. Summary of the invention

[0004] The present invention provides a platform door monitoring circuit, method and device, which are used to solve the defects of the prior art that the gravity-type relay is large in size and occupies a large space in the installation cabinet, which is not conducive to the miniaturization and integration of the monitoring system. The present invention enables the interlocking device to quickly monitor the switch status of the platform door, and can reduce the space occupancy rate, realize the miniaturization and integration of the monitoring circuit, and improve the safety performance.

[0005] The present invention provides a platform door monitoring circuit, which includes: a door closing relay component, the door closing relay component has an input end and a working output end; a monitoring relay component, the monitoring relay component has an input end and a working output end, and the monitoring relay component is a European standard safety relay; a platform door device, the input end of the door closing relay component is electrically connected to the platform door device for collecting the switching state of the platform door, and the working output end of the door closing relay component is connected to the input end of the monitoring relay component to form a control loop; an interlocking device, the monitoring end of the interlocking device is electrically connected to the working output end of the monitoring relay component to form a monitoring loop.

[0006] According to a platform door monitoring circuit provided by the present invention, the door closing relay component includes: a first door closing relay and a second door closing relay, the first door closing relay and the second door closing relay both have an input end and a working output end, the input end of the first door closing relay and the input end of the second door closing relay are both used to collect the switching state of the platform door, and the working output end of the first door closing relay and the working output end of the second door closing relay are connected in series to the control loop.

[0007] According to a platform door monitoring circuit provided by the present invention, the working output end of the first door closing relay, the input end of the monitoring relay assembly and the working output end of the second door closing relay are electrically connected in sequence to form the control loop.

[0008] According to a platform door monitoring circuit provided by the present invention, the monitoring relay assembly includes: a first monitoring relay and a second monitoring relay, the first monitoring relay and the second monitoring relay both have an input end and a working output end, the input end of the first monitoring relay and the input end of the second monitoring relay are connected in parallel and then connected to the control loop, and the working output end of the first monitoring relay and the working output end of the second monitoring relay are connected in series and then connected to the monitoring loop.

[0009] According to a platform door monitoring circuit provided by the present invention, the first monitoring relay also has a spare output end, the spare output end of the first monitoring relay is synchronized with the switching state of the working output end of the first monitoring relay, the monitoring circuit includes a first monitoring circuit and a second monitoring circuit, the interlocking device has a first monitoring end and a second monitoring end, the first monitoring end of the interlocking device, the working output end of the first monitoring relay and the working output end of the second monitoring relay are connected in series to form the first monitoring circuit, and the second monitoring end of the interlocking device, the spare output end of the first monitoring relay and the working output end of the second monitoring relay are connected in series to form the second monitoring circuit.

[0010] According to a platform door monitoring circuit provided by the present invention, the first monitoring circuit includes the first monitoring end of the interlocking device, the normally closed contact of the working output end of the first monitoring relay, and the normally closed contact of the working output end of the second monitoring relay connected in sequence; the second monitoring circuit includes the second monitoring end of the interlocking device, the normally open contact of the standby output end of the first monitoring relay, and the normally open contact of the working output end of the second monitoring relay connected in sequence.

[0011] The present invention also provides a platform door monitoring method, which is applied to the above-mentioned platform door monitoring circuit, and the method includes: obtaining a first switch status signal in a first monitoring loop and a second switch status signal in a second monitoring loop; based on the first switch status signal and the second switch status signal, determining the switch status of the door closing relay and monitoring the working status of the relay component.

[0012] The present invention also provides a platform door monitoring device, which is applied to the above-mentioned platform door monitoring circuit, and the device includes: an acquisition module, used to acquire a first switch status signal in a first monitoring loop and a second switch status signal in a second monitoring loop; a determination module, used to determine the switch status of the platform door and the working status of the monitoring relay component based on the first switch status signal and the second switch status signal.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the platform door monitoring methods described above are implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the platform door monitoring methods described above are implemented.

[0015] The platform door monitoring circuit, method and device provided by the present invention use European standard safety relays to form a monitoring relay assembly, electrically connect the input end of the door closing relay assembly to the platform door equipment, and electrically connect the input end of the monitoring relay assembly to the working output end of the door closing relay assembly. In this way, the interlocking device can quickly monitor the switching state of the platform door, reduce the space occupancy, realize the miniaturization and integration of the monitoring circuit, and improve the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a control loop of a platform door monitoring circuit provided by the present invention;

[0018] Figure 2 It is a structural schematic diagram of a monitoring loop of a platform door monitoring circuit provided by the present invention;

[0019] Figure 3 It is a flow chart of the platform door monitoring method provided by the present invention;

[0020] Figure 4 It is a structural schematic diagram of the platform door monitoring device provided by the present invention;

[0021] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention.

[0022] Reference numerals:

[0023] 10: interlocking device; 20: platform door device; 30: control circuit;

[0024] 40: monitoring loop; 41: first monitoring loop; 42: second monitoring loop;

[0025] M0: Door closing relay assembly; M1: First door closing relay; M2: Second door closing relay;

[0026] J0: monitoring relay assembly; J1: first monitoring relay; J2: second monitoring relay. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Combine the following Figures 1 to 5 The platform door monitoring circuit, method and device of the present invention are described.

[0029] like Figure 1 and Figure 2 As shown, the present invention provides a platform door monitoring circuit, which includes: a door closing relay component M0, a monitoring relay component J0, a platform door device 20 and an interlocking device 10.

[0030] The door closing relay assembly M0 has an input end and a working output end.

[0031] The door closing relay component M0 can be installed on the platform door device 20, and the input end of the door closing relay component M0 can be electrically connected to the platform door device 20. The platform door device 20 can have a door switch sensor, which can be installed on the platform door to monitor the switch state of the platform door. The door switch sensor can be a pressure sensor, a photoelectric sensor or a micro switch. The input end of the door closing relay component M0 can be connected in series with the door closing sensor in a circuit. When the switch state of the platform door changes, the door closing sensor can collect the corresponding electrical signal and transmit the electrical signal to the input end of the door closing relay component M0.

[0032] That is to say, the input end of the door closing relay component M0 can collect the switch status of the platform door.

[0033] The monitoring relay component J0 has an input terminal and a working output terminal, and the monitoring relay component J0 is a European standard safety relay.

[0034] The monitoring relay assembly J0 may be composed of one or more European standard safety relays. Compared with gravity type relays, European standard safety relays are lighter and smaller in size.

[0035] The traditional gravity-type relay is a fault-guided safety relay. When a relay fails, such as demagnetization or contact welding, the relay contacts can be forced open by the gravity of the armature, and the rear contacts of all contacts can be connected. At the same time, the relay circuit sets the rear contacts to the safety side state. After the external interface or interlocking device 10 output collects the rear contact state, the fault caused by the relay can be handled as the safety side.

[0036] The European standard safety relay is a reactive safety relay with a forced-guided contact structure and no defined safety side. The European standard safety relay currently selected for scattered circuits meets the forced-guide (mechanical connection) attribute: the design of the relay ensures that if any normally closed contact is closed, the forced guide ensures that all normally open contacts cannot be closed; if any normally open contact is closed, the forced guide ensures that all normally closed contacts cannot be closed. This function needs to be effective throughout the life cycle of the relay, even in certain reasonably foreseeable fault conditions. Reasonably foreseeable damage or wear of relay components should not affect the function of forced guidance. Within the specified life, the contact gap of the relay should be greater than 0.5mm for a single contact and greater than 0.3mm for a double contact. Forced guidance means that if any normally open contact sticks, all normally closed contacts cannot be closed when the relay loses power; if any normally closed contact sticks, all normally open contacts cannot be closed when the relay is energized.

[0037] Therefore, the current European standard safety relay can ensure the safety of the following two states: First, if welding occurs at any normally open contact, after the relay is powered on, due to the action of the forced guide rod, all normally closed contacts cannot be closed normally (normal gap > 1mm, this time the gap > 0.5mm), at this time the system can determine the relay fault by collecting the normally closed contact disconnection state; Second, if welding occurs at any normally closed contact, after the relay is powered on, due to the action of the forced guide rod, all normally open contacts cannot be closed normally (normal gap > 1mm, this time the gap > 0.5mm), at this time the system can determine the relay fault by collecting the normally open contact disconnection state.

[0038] The working output end of the door closed relay component M0 is connected to the input end of the monitoring relay component J0 to form a control loop 30. The input end of the monitoring relay component J0 and the working output end of the door closed relay component M0 can be connected in series in the control loop 30. In this way, the switching state of the working output end of the door closed relay component M0 can affect the switching state of the input end of the monitoring relay component J0, and then the door closed relay component M0 transmits the switching state of the platform door to the monitoring relay component J0.

[0039] The monitoring end of the interlocking device 10 is electrically connected to the working output end of the monitoring relay assembly J0 to form a monitoring loop 40 .

[0040] It can be understood that when the switching state of the input end of the monitoring relay component J0 changes, the working output end will be driven to produce a corresponding switching state change. Here, the working output end of the monitoring relay component J0 is electrically connected to the monitoring end of the interlocking device 10. The monitoring end of the interlocking device 10 can monitor the switching state of the working output end of the monitoring relay component J0, and then indirectly monitor the switching state of the platform door.

[0041] The platform door monitoring circuit provided by the present invention uses European standard safety relays to form a monitoring relay component J0, electrically connects the input end of the door closing relay component M0 to the platform door device 20, and electrically connects the input end of the monitoring relay component J0 to the working output end of the door closing relay component M0. In this way, the interlocking device 10 can quickly monitor the switching state of the platform door, reduce the space occupancy, realize the miniaturization and integration of the monitoring circuit, and improve the safety performance.

[0042] like Figure 1 and Figure 2As shown, in some embodiments, the door closing relay assembly M0 includes: a first door closing relay M1 and a second door closing relay M2, the first door closing relay M1 and the second door closing relay M2 both have an input end and a working output end, the input end of the first door closing relay M1 and the input end of the second door closing relay M2 are both used to collect the switching state of the platform door, and the working output end of the first door closing relay M1 and the working output end of the second door closing relay M2 are connected in series to the control loop 30.

[0043] It can be understood that the door closing relay component M0 can also be a European standard safety relay. Here, the door closing relay component M0 includes two relays, which are the first door closing relay M1 and the second door closing relay M2. The working output end of the first door closing relay M1 and the working output end of the second door closing relay M2 are connected in series in the control loop 30. Then the control loop 30 includes the working output end of the first door closing relay M1, the working output end of the second door closing relay M2 and the input end of the monitoring relay component J0.

[0044] The input end of the first door closing relay M1 and the input end of the second door closing relay M2 can be electrically connected to the platform door device 20, and the input end of the first door closing relay M1 and the input end of the second door closing relay M2 are both used to collect the switching status of the platform door. The input end of the first door closing relay M1 and the input end of the second door closing relay M2 can be connected in parallel and electrically connected to the platform door device 20, so that the first door closing relay M1 and the second door closing relay M2 can complement each other. When any one of them fails, the other can still respond to the switching status of the platform door.

[0045] like Figure 1 As shown, in some embodiments, the working output terminal of the first door-closing relay M1 , the input terminal of the monitoring relay assembly J0 , and the working output terminal of the second door-closing relay M2 are electrically connected in sequence to form a control loop 30 .

[0046] It can be understood that the input end of the monitoring relay component J0 is located in the control loop 30, between the working output end of the first door-closing relay M1 and the working output end of the second door-closing relay M2. That is to say, the working output end of the first door-closing relay M1 can control the power supply on one side of the input end of the monitoring relay component J0, and the working output end of the second door-closing relay M2 can control the power supply on the other side of the input end of the monitoring relay component J0. In this way, when a fault occurs in the first door-closing relay M1 or the second door-closing relay M2, the fault point can be quickly located.

[0047] like Figure 1 and Figure 2As shown, in some embodiments, the monitoring relay assembly J0 includes: a first monitoring relay J1 and a second monitoring relay J2, the first monitoring relay J1 and the second monitoring relay J2 both have an input end and a working output end, the input end of the first monitoring relay J1 and the input end of the second monitoring relay J2 are connected in parallel and connected to the control loop 30, and the working output end of the first monitoring relay J1 and the working output end of the second monitoring relay J2 are connected in series and connected to the monitoring loop 40.

[0048] It can be understood that the monitoring relay assembly J0 can include two European standard safety relays, namely the first monitoring relay J1 and the second monitoring relay J2. The input end of the first monitoring relay J1 and the input end of the second monitoring relay J2 are connected in parallel, so the input end of the first monitoring relay J1, the input end of the second monitoring relay J2 and the working output end of the door closing relay assembly M0 form a control loop 30. When the door closing relay assembly M0 produces a switch state change, the input end of the first monitoring relay J1 and the input end of the second monitoring relay J2 also undergo corresponding switch changes, which correspondingly drive the working output end of the first monitoring relay J1 and the working output end of the second monitoring relay J2 to produce corresponding switch changes. The working output end of the first monitoring relay J1 and the working output end of the second monitoring relay J2 can be connected in series, so the working output end of the first monitoring relay J1, the working output end of the second monitoring relay J2 and the monitoring end of the interlocking device 10 together form a monitoring loop 40.

[0049] The parallel design of the first monitoring relay J1 and the second monitoring relay J2 can make the first monitoring relay J1 and the second monitoring relay J2 complement each other. When any one of them fails, the other one can still respond to the switch status of the platform door.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments, the first monitoring relay J1 also has a spare output terminal, the spare output terminal of the first monitoring relay J1 is synchronized with the switching state of the working output terminal of the first monitoring relay J1, the monitoring circuit 40 includes a first monitoring circuit 41 and a second monitoring circuit 42, the interlocking device 10 has a first monitoring terminal and a second monitoring terminal, the first monitoring terminal of the interlocking device 10, the working output terminal of the first monitoring relay J1 and the working output terminal of the second monitoring relay J2 are connected in series to form the first monitoring circuit 41, and the second monitoring terminal of the interlocking device 10, the spare output terminal of the first monitoring relay J1 and the working output terminal of the second monitoring relay J2 are connected in series to form the second monitoring circuit 42.

[0051] It can be understood that the first monitoring relay J1 can have a backup output terminal that is synchronized with the switching state of the working output terminal. This is an inherent property of the European standard safety relay. When the switching state of the input terminal of the first monitoring relay J1 changes, the working output terminal and the backup output terminal of the first monitoring relay J1 can produce synchronized switching state changes.

[0052] The interlocking device 10 has a first monitoring end and a second monitoring end, and the corresponding monitoring circuit 40 is divided into a first monitoring circuit 41 and a second monitoring circuit 42. The first monitoring circuit 41 includes the first monitoring end of the interlocking device 10 connected in series, the working output end of the first monitoring relay J1 and the working output end of the second monitoring relay J2. The second monitoring circuit 42 includes the second monitoring end of the interlocking device 10 connected in series, the standby output end of the first monitoring relay J1 and the working output end of the second monitoring relay J2.

[0053] The dual-path connection of the first monitoring circuit 41 and the second monitoring circuit 42 can more completely present the fault forms of the first monitoring relay J1 and the second monitoring relay J2, making it easier to accurately locate the fault points of the first monitoring relay J1 and the second monitoring relay J2.

[0054] like Figure 1 and Figure 2 As shown, in some embodiments, the first monitoring circuit 41 includes the first monitoring end of the interlocking device 10, the normally closed contact of the working output end of the first monitoring relay J1, and the normally closed contact of the working output end of the second monitoring relay J2 connected in sequence; the second monitoring circuit 42 includes the second monitoring end of the interlocking device 10, the normally open contact of the standby output end of the first monitoring relay J1, and the normally open contact of the working output end of the second monitoring relay J2 connected in sequence.

[0055] It can be understood that the working output end of the first monitoring relay J1 has a normally open contact and a normally closed contact, the standby output end of the first monitoring relay J1 has a normally open contact and a normally closed contact, the working output end of the second monitoring relay J2 has a normally open contact and a normally closed contact, and the types of contacts of the first monitoring relay J1 and the second monitoring relay J2 connected to the first monitoring circuit 41 and the second monitoring circuit 42 are not the same. In this way, when the fault state cannot be determined, the fault type can be identified, which facilitates further accurate positioning of the fault point of the first monitoring relay J1 and the second monitoring relay J2.

[0056] like Figure 3 As shown, the present invention further provides a platform door monitoring method, which is applied to the above-mentioned platform door monitoring circuit, and the method includes the following steps 310 to 320.

[0057] Step 310 , obtaining a first switch status signal in the first monitoring loop 41 and a second switch status signal in the second monitoring loop 42 .

[0058] It can be understood that the executor of the platform door monitoring method can be the interlocking device 10, which can obtain the first switch status signal in the first monitoring loop 41 through the first monitoring end, and can obtain the second switch status signal in the second monitoring loop 42 through the second monitoring end.

[0059] The first switch state signal includes the switch state of the working output end of the first monitoring relay J1 and the switch state of the working output end of the second monitoring relay J2, and the second switch state signal includes the switch state of the standby output end of the first monitoring relay J1 and the switch state of the working output end of the second monitoring relay J2.

[0060] Step 320: Based on the first switch state signal and the second switch state signal, determine the switch state of the platform door and monitor the working state of the relay component J0.

[0061] It can be understood that the switch state of the platform door can be determined based on the first switch state signal and the second switch state signal, and the working state of the monitoring relay component J0 can also be obtained based on the first switch state signal and the second switch state signal. For example, it can be determined whether the monitoring relay component J0 has a fault and the type of fault.

[0062] It should be noted that the door closing relay assembly M0 is driven by the platform door device 20. The control circuit 30 composed of the door closing relay assembly M0 and the monitoring relay assembly J0 is no different from the original solution using a gravity-type relay, and the monitoring circuit 40 connected to the monitoring end of the interlocking device 10 is designed as a two-way monitoring, using normally open contacts and normally closed contacts to construct the corresponding monitoring circuit 40.

[0063] The following analysis is conducted from the aspects of relay contact adhesion, contact oxidation, and mixed acquisition lines.

[0064] First, relay contact adhesion analysis.

[0065] When all platform doors are "closed and locked", the platform door device 20 drives the door closing relay assembly M0 to energize and pick up:

[0066] 1. When one normally open contact of any relay in the monitoring relay assembly J0 sticks, then after the relay is powered off, due to the action of the forced guide rod, all normally closed contacts cannot be closed normally. In the closed state, the fault state cannot be confirmed. However, when the platform door is turned to the open state, the door closing relay assembly M0 loses power, and the interlocking device 10 collects the two sets of contact states (first monitoring circuit 41, second monitoring circuit 42) = (0, 0) at the working output end of the monitoring relay assembly J0, indicating that a fault state has occurred. The interlocking device 10 performs alarm processing, that is, it can realize that the fault can be identified when the normally open contact of the monitoring relay assembly J0 sticks for the first time.

[0067] 2. When one normally closed contact of any relay in the monitoring relay assembly J0 is stuck, then after the relay is energized, due to the action of the forced guide rod, all normally open contacts cannot be closed normally. When the door is open, the fault state cannot be confirmed. However, when the platform door is turned to the closed state, the door closed relay assembly M0 is energized, and the interlocking device 10 collects the two sets of contact states (first monitoring circuit 41, second monitoring circuit 42) = (0, 0) at the working output end of the monitoring relay assembly J0, indicating that a fault state has occurred. The interlocking device 10 performs alarm processing, that is, it can identify the fault when the normally closed contacts of the monitoring relay assembly J0 are stuck for the first time.

[0068] Second, relay contact oxidation analysis.

[0069] 1. When the normally open contact of the monitoring relay assembly J0 is oxidized, the platform door is in the closed state, the door closing relay assembly M0 is energized, and the interlocking device 10 collects the two groups of contact states (the first monitoring circuit 41, the second monitoring circuit 42) = (0, 0) at the working output end of the monitoring relay assembly J0, indicating that a fault state has occurred, and the interlocking device 10 performs alarm processing; when the normally closed contacts of the two groups of contact states (the first monitoring circuit 41, the second monitoring circuit 42) at the working output end of the monitoring relay assembly J0 are oxidized, the platform door is in the open state, the door closing relay assembly M0 loses power, and the interlocking device 10 collects the two groups of contact states (the first monitoring circuit 41, the second monitoring circuit 42) = (0, 0) at the working output end of the monitoring relay assembly J0, indicating that a fault state has occurred, and the signal system performs alarm processing.

[0070] Third, collect mixed line analysis.

[0071] When the normally open collection contacts of the monitoring relay component J0 are mixed and the door closing relay component M0 is energized, the interlocking device 10 collects the two groups of contact states (first monitoring circuit 41, second monitoring circuit 42) = (1, 1) at the working output end of the monitoring relay component J0, indicating that a fault state has occurred, and the interlocking device 10 performs alarm processing; when the single-channel collection monitoring relay component J0 is mixed and the door closing relay component M0 loses power, the interlocking device 10 collects the two groups of contact states (first monitoring circuit 41, second monitoring circuit 42) = (1, 1) at the working output end of the monitoring relay component J0, indicating that a fault state has occurred, and the interlocking device 10 performs alarm processing.

[0072] In summary, the monitoring relay assembly J0 can be composed of European standard safety relays, and the monitoring circuit 40 of the interlocking device 10 can adopt dual-channel acquisition, that is, the first monitoring relay J1 and the second monitoring relay J2 are normally open in series and normally closed in series. When the interlocking device 10 collects the relay state inconsistent with the driving expectation, it should perform alarm processing and feedback the alarm information to the user. The detection relay assembly has spare contacts output to the maintenance monitoring collection.

[0073] The platform door monitoring device provided by the present invention is described below. The platform door monitoring device described below and the platform door monitoring method described above can be referenced to each other.

[0074] like Figure 4 As shown, the present invention further provides a platform door monitoring device, which is applied to the above-mentioned platform door monitoring circuit. The device includes: an acquisition module 410 and a determination module 420.

[0075] The acquisition module 410 is used to acquire a first switch state signal in the first monitoring loop and a second switch state signal in the second monitoring loop.

[0076] The determination module 420 is used to determine the switch state of the door closing relay and monitor the working state of the relay component based on the first switch state signal and the second switch state signal.

[0077] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 communicate with each other through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the platform door monitoring method, which is applied to the platform door monitoring circuit in the above embodiment, and the method includes: obtaining a first switch state signal in a first monitoring loop and a second switch state signal in a second monitoring loop; based on the first switch state signal and the second switch state signal, determining the switch state of the door closing relay and monitoring the working state of the relay component.

[0078] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0079] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the platform door monitoring method provided by the above-mentioned methods. The platform door monitoring method is applied to the platform door monitoring circuit in the above-mentioned embodiment. The method includes: obtaining a first switch status signal in a first monitoring loop and a second switch status signal in a second monitoring loop; based on the first switch status signal and the second switch status signal, determining the switch status of the door closing relay and monitoring the working status of the relay component.

[0080] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the platform door monitoring method provided by the above-mentioned methods. The platform door monitoring method is applied to the platform door monitoring circuit in the above-mentioned embodiment. The method includes: obtaining a first switch status signal in a first monitoring loop and a second switch status signal in a second monitoring loop; based on the first switch status signal and the second switch status signal, determining the switch status of the door closing relay and monitoring the working status of the relay assembly.

[0081] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0082] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A platform door monitoring circuit, characterized in that: include: A door closing relay assembly, wherein the door closing relay assembly has an input end and a working output end; A monitoring relay component, wherein the monitoring relay component has an input end and a working output end, and the monitoring relay component is a European standard safety relay; Platform door equipment, the input end of the door closing relay assembly is electrically connected to the platform door equipment, and is used to collect the switch status of the platform door, and the working output end of the door closing relay assembly is connected to the input end of the monitoring relay assembly to form a control loop; An interlocking device, wherein a monitoring end of the interlocking device is electrically connected to a working output end of the monitoring relay assembly to form a monitoring loop; The door closing relay assembly includes: a first door closing relay and a second door closing relay, wherein the first door closing relay and the second door closing relay both have an input end and a working output end, the input end of the first door closing relay and the input end of the second door closing relay are both used to collect the switch state of the platform door, and the working output end of the first door closing relay and the working output end of the second door closing relay are connected in series to the control loop; The monitoring relay assembly comprises: a first monitoring relay and a second monitoring relay, wherein the first monitoring relay and the second monitoring relay both have an input end and a working output end, the input end of the first monitoring relay and the input end of the second monitoring relay are connected in parallel and then connected to the control loop, and the working output end of the first monitoring relay and the working output end of the second monitoring relay are connected in series and then connected to the monitoring loop; The first monitoring relay also has a spare output terminal, and the spare output terminal of the first monitoring relay is synchronized with the switching state of the working output terminal of the first monitoring relay. The monitoring circuit includes a first monitoring circuit and a second monitoring circuit. The interlocking device has a first monitoring terminal and a second monitoring terminal. The first monitoring terminal of the interlocking device, the working output terminal of the first monitoring relay and the working output terminal of the second monitoring relay are connected in series to form the first monitoring circuit. The second monitoring terminal of the interlocking device, the spare output terminal of the first monitoring relay and the working output terminal of the second monitoring relay are connected in series to form the second monitoring circuit.

2. The platform door monitoring circuit according to claim 1, characterized in that: The working output end of the first door-closing relay, the input end of the monitoring relay assembly and the working output end of the second door-closing relay are electrically connected in sequence to form the control loop.

3. The platform door monitoring circuit according to claim 1, characterized in that: The first monitoring circuit includes a first monitoring end of the interlocking device, a normally closed contact of a working output end of the first monitoring relay, and a normally closed contact of a working output end of the second monitoring relay, which are connected in sequence; The second monitoring circuit includes the second monitoring end of the interlocking device, the normally open contact of the standby output end of the first monitoring relay, and the normally open contact of the working output end of the second monitoring relay, which are connected in sequence.

4. A platform door monitoring method, characterized in that: Applied to the platform door monitoring circuit as claimed in claim 3, the method comprises: Acquire a first switch state signal in a first monitoring loop and a second switch state signal in a second monitoring loop; Based on the first switch state signal and the second switch state signal, the switch state of the door closing relay is determined and the working state of the relay component is monitored.

5. A platform door monitoring device, characterized in that: Applied to the platform door monitoring circuit as claimed in claim 3, the device comprises: An acquisition module, used to acquire a first switch state signal in a first monitoring loop and a second switch state signal in a second monitoring loop; A determination module is used to determine the switch state of the platform door and monitor the working state of the relay component based on the first switch state signal and the second switch state signal.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the platform door monitoring method as claimed in claim 4 are implemented.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the platform door monitoring method as claimed in claim 4 are implemented.

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