Elevator door lock circuit detection device and elevator

Abstract

The application relates to an elevator door lock loop detection device and an elevator, wherein the door lock loop comprises a hall door lock loop and a car door lock loop connected in series, the door lock loop detection device comprises: a plurality of detection circuits, each detection circuit comprises a detection switch, each detection switch is connected with a corresponding hall door lock or car door lock; a controller connected with the input end of each detection circuit, used for sending a detection signal to the detection switch of the corresponding hall door lock and car door lock according to a door machine door opening signal, so as to control the closing of the corresponding detection switch; and collecting a feedback signal at the output end of the corresponding detection circuit, and determining the short-circuit state of the corresponding hall door lock and car door lock according to the feedback signal, so that independent detection of the short-circuit state of each door lock is realized.

Description

Technical Field

[0001] This application relates to the field of elevator technology, and in particular to an elevator door lock circuit detection device and an elevator. Background Technology

[0002] Three-sided elevators are increasingly in demand due to their high space utilization and flexible passenger flow. However, the electrical control of multi-door structures is complex and difficult to design. The safety verification and door lock circuit detection of multi-door structures lack unified judgment standards and are structurally complex, which can easily lead to the following problems: conflicting actions of multiple door operators, resulting in unstable control logic; and the lack of unified judgment standards for safety verification and door circuit detection of multi-door structures.

[0003] Currently, three-door elevators on the market are all custom-developed for different construction sites, with stringent applicable conditions. Different door opening floor schemes require non-standard customization. For example, some manufacturers still use a double-door scheme, simply treating the third door as either a rear or front door in series to achieve three door openings. This scheme is only suitable for simultaneous opening on every floor, and has significant safety hazards in door circuit detection, as well as other drawbacks such as stringent applicable conditions.

[0004] Figure 1 This is a typical design scheme for a three-door lock circuit in related technologies. Although this scheme can identify the short circuit of each door lock individually, it cannot detect the situation where two doors are shorted at the same time, which poses a great safety hazard. For example, if HC-J02 and HC-J04 are shorted at the construction site, that is, the front door and the rear door are shorted at the same time with a single wire, this scheme will not detect the door lock being shorted. Or, if the elevator manufacturer short-circuits HC-J02 and HC-J04 when manufacturing the control cabinet or when repairing the elevator door at the construction site, due to the defect of this scheme, the control system cannot detect the simultaneous shorting of two doors. This will lead to the elevator continuing to operate normally even if the front hall door or the rear hall door is opened separately during normal operation, which can easily cause personnel injury accidents and poses a great safety hazard.

[0005] There is currently no effective solution to the problem that the door locks of multi-door elevators cannot be detected individually in related technologies. Utility Model Content

[0006] Therefore, it is necessary to provide an elevator door lock circuit detection device and an elevator that can be used for door lock circuit detection in multi-door elevators, in order to address the above-mentioned technical problems.

[0007] This utility model provides an elevator door lock circuit detection device. The door lock circuit includes a hall door lock circuit and a car door lock circuit connected in series. The hall door lock circuit includes at least three hall door lock sub-circuits in different locations, and each hall door lock sub-circuit is connected in series, including hall door locks for each floor connected in series. The car door lock circuit includes at least three car door locks in different locations, and each car door lock is connected in series. The door lock circuit detection device includes:

[0008] Multiple detection circuits, each of which includes a detection switch, and each detection switch is respectively connected to the corresponding hall door lock or the car door lock;

[0009] The controller, connected to the input terminals of each of the detection circuits, is used to send detection signals to the detection switches of the corresponding hall door lock and the car door lock according to the door closing signal, so as to control the corresponding detection switches to close; and to collect the feedback signals from the output terminals of the corresponding detection circuits, and determine the short-circuit state of the corresponding hall door lock and the car door lock according to the feedback signals.

[0010] In one embodiment, the detection switch includes a first normally closed contact, a second normally closed contact, a first normally open contact, and a second normally open contact;

[0011] The first normally closed contact and the second normally closed contact are connected in series at both ends of the hall door lock or the car door lock; the first normally open contact and the second normally open contact are connected in parallel at both ends of the hall door lock or the car door lock.

[0012] The controller sends a detection signal to the corresponding detection switch based on the door closing signal, and controls the first normally open contact and the second normally open contact of the corresponding detection switch to close.

[0013] In one embodiment, the detection switch includes a contactor or a relay.

[0014] In one embodiment, the controller further includes a plurality of I / O input ports, each of which is connected to the output terminal of the corresponding detection circuit, and each of the I / O input ports is used to collect the feedback signal from the output terminal of the corresponding detection circuit.

[0015] In one embodiment, the feedback signal includes a voltage signal.

[0016] In one embodiment, when the voltage signal is high, the corresponding hall door lock or car door lock is short-circuited; when the voltage signal is low, the corresponding hall door lock or car door lock is not short-circuited.

[0017] In one embodiment, the door closing signal is generated by the elevator control system after the elevator door has opened to the correct position and after the waiting time for the door to open has ended.

[0018] In one embodiment, the door lock circuit detection device further includes an alarm installed inside the elevator car. The alarm is connected to the controller and is used to issue an alarm when the hall door lock or the car door lock is short-circuited.

[0019] In one embodiment, the hall door lock circuit includes a hall door lock detection point for outputting a hall door lock signal, and the car door lock circuit includes a car door lock detection point for outputting a car door lock signal. The controller is also used to determine, based on the hall door lock signal, whether a hall door lock in the hall door lock circuit is short-circuited after the elevator door has opened to the correct position, and to determine, based on the car door lock signal, whether a car door lock in the car door lock circuit is short-circuited.

[0020] Secondly, this utility model also provides an elevator, including: a door lock circuit and a door lock circuit detection device as described in the first aspect above.

[0021] This utility model provides an elevator door lock circuit detection device and an elevator. The door lock circuit includes a hall door lock circuit and a car door lock circuit connected in series. The hall door lock circuit includes at least three hall door lock sub-circuits in different locations, each connected in series, and each hall door lock sub-circuit includes hall door locks for each floor connected in series. The car door lock circuit includes at least three car door locks in different locations, each connected in series. The door lock circuit detection device includes multiple detection circuits, each detection circuit including a detection switch. The test switches are connected to the corresponding hall door locks or car door locks respectively; the controller is connected to the input terminal of each of the detection circuits, and is used to send detection signals to the detection switches of the corresponding hall door locks and car door locks according to the door closing signal, so as to control the corresponding detection switches to close; and to collect the feedback signals of the output terminal of the corresponding detection circuits, and determine the short-circuit state of the corresponding hall door locks and car door locks according to the feedback signals, thereby realizing independent detection of the short-circuit state of each lock, and can be directly extended to independent detection of locks with four or more doors. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a circuit diagram of a three-door lock circuit in related technologies;

[0024] Figure 2 This is a structural block diagram of a door lock circuit detection device in one embodiment;

[0025] Figure 3 This is a control principle diagram of an elevator control system in one embodiment;

[0026] Figure 4 This is a circuit diagram of a door lock circuit detection device for a three-door elevator in one embodiment;

[0027] Figure 5 This is a circuit diagram of a hall door lock circuit detection device for a three-door elevator in one embodiment;

[0028] Figure 6 This is a circuit diagram of a car door lock circuit detection device for a three-door elevator in one embodiment;

[0029] Figure 7 This is a schematic diagram illustrating the triggering principle of the door lock detection contactor in one embodiment. Detailed Implementation

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0031] It should be understood that when a unit or module is described as "connected" or "coupled" to other units, modules, or blocks, it may refer to a direct connection or coupling, or communication with other units, modules, or blocks, or the presence of intermediate units, modules, or blocks, unless the context explicitly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0032] In view of the significant safety hazards and the inability to test each door lock individually in the aforementioned door lock circuit detection, this utility model proposes an elevator door lock circuit detection device, which solves the safety hazards of current multi-door door lock circuit detection solutions on the market and fills the gap in the market for multi-door elevator door lock circuit detection.

[0033] This utility model provides an elevator door lock circuit detection device. The door lock circuit includes a hall door lock circuit and a car door lock circuit connected in series. The hall door lock circuit includes at least three hall door lock sub-circuits in different positions, and each hall door lock sub-circuit is connected in series. Each hall door lock sub-circuit includes hall door locks of each floor connected in series. The car door lock circuit includes at least three car door locks in different positions, and each car door lock is connected in series.

[0034] like Figure 2 As shown, the door lock circuit detection device includes multiple detection circuits 10 and a controller 20. Each detection circuit 10 includes a detection switch, and each detection switch is connected to the corresponding hall door lock or car door lock, that is, each hall door lock and car door lock in the door lock circuit is connected to a detection switch. The controller 20 is connected to the input terminal of each detection circuit 10 and is used to send detection signals to the detection switches of the corresponding hall door lock and car door lock according to the door closing signal, so as to control the corresponding detection switches to close; and to collect the feedback signal from the output terminal of the corresponding detection circuit 10, and determine the short-circuit state of the corresponding hall door lock and car door lock according to the feedback signal.

[0035] In this embodiment of the application, the door closing signal is generated by the elevator control system after the elevator door has opened to the correct position and after the waiting time for the door to open has ended. For example... Figure 3As shown, the elevator control system sends door system signals to the door system and receives external call signals from the external call system, as well as internal call signals from the internal call system. In the control system of a three-door elevator, the door system signals sent by the elevator control system to the door system include: DO (front door open signal), RDO (rear door open signal), LDO (side door open signal), DC (front door close signal), RDC (rear door close signal), and LDC (side door close signal). These door system signals are used to control the opening or closing of the front, rear, and side doors respectively. The signals received by the elevator control system from the external call system include: HB (front door external call signal), RHB (rear door external call signal), and LHB (side door external call signal). The signals received by the elevator control system from the internal call system include: CB (front door internal call signal), RCB (side door internal call signal), and LCB (side door internal call signal). The door system also sends the following signals to the control system: DOL (front door open signal), RDOL (rear door open signal), LDOL (side door open signal), input signals DCL (front door closed signal), RDCL (rear door closed signal), LDCL (side door closed signal), LRD (front door light curtain signal), RLRD (rear door light curtain signal), and LLRD (side door light curtain signal). The door lock circuit detection device of this application is designed into the door system to identify whether the hall door lock and the car door lock are short-circuited.

[0036] Wherein: HB represents the front door call signal, HB1, HB2, HB3, ..., HBN represent the front door call signals for floors 1, 2, 3, ..., N respectively; RHB represents the rear door call signal, RHB1, RHB2, RHB3, ..., RHBN represent the rear door call signals for floors 1, 2, 3, ..., N respectively; LHB represents the side door call signal, LHB1, LHB2, LHB3, ..., LHBN represent the side door call signals for floors 1, 2, 3, ..., N respectively. Number; CB represents the internal call signal for the front door, CB1, CB2, CB3, ..., CBN represent the internal call signals for the 1st, 2nd, 3rd, ..., Nth floors of the front door respectively; RCB represents the internal call signal for the rear door, RCB1, RCB2, RCB3, ..., RCBN represent the internal call signals for the 1st, 2nd, 3rd, ..., Nth floors of the rear door respectively; LCB represents the internal call signal for the side door, LCB1, LCB2, LCB3, ..., LCBN represent the internal call signals for the 1st, 2nd, 3rd, ..., Nth floors of the side door respectively.

[0037] This invention uses the door closing signal to control the door lock detection action, thereby triggering the door lock circuit detection. It does not involve protocol or communication control, but only relies on external signal input. It is completely unrestricted by the control system and can be compatible with different control systems from different manufacturers. There is no need to develop a custom door lock detection logic protocol.

[0038] Furthermore, the feedback signal includes a voltage signal. By detecting whether each detection circuit 10 outputs a voltage signal, it is determined whether the corresponding door lock is short-circuited. A voltage signal output indicates that the door lock is short-circuited, while no voltage output indicates that the door lock is not short-circuited. Of course, in other embodiments, the feedback signal can also be other signals.

[0039] In one embodiment, the detection switch includes a first normally closed contact, a second normally closed contact, a first normally open contact, and a second normally open contact; the first normally closed contact and the second normally closed contact are connected in series at both ends of the hall door lock or the car door lock; the first normally open contact and the second normally open contact are connected in parallel at both ends of the hall door lock or the car door lock; the first normally open contact or the second normally open contact of the detection switch is connected to a power supply; the controller 20 sends a detection signal to the corresponding detection switch based on the door closing signal, and controls the first normally open contact and the second normally open contact of the corresponding detection switch to close.

[0040] The detection switch includes a contactor or a relay.

[0041] In one specific embodiment, the circuit diagram of the door lock circuit detection device for a three-door elevator is as follows: Figure 4 As shown, the door lock circuit includes a hall door lock circuit for the front door, rear door, and side door, and a car door lock circuit. The hall door lock circuit and the car door lock circuit are connected in series. The hall door lock circuit includes a front hall door lock sub-circuit, a rear hall door lock circuit, and a side hall door lock circuit. The front hall door lock sub-circuit includes front hall door locks DS for each floor, and the front hall door locks DS are connected in series. The rear hall door lock sub-circuit includes rear hall door locks RDS for each floor, and the rear hall door locks RDS are connected in series. The side hall door lock circuit includes side hall door locks LDS for each floor, and the side hall door locks LDS are connected in series. The car door lock circuit includes a front car door lock GS, a rear car door lock RGS, and a side car door lock LGS connected in series.

[0042] The detection switch includes a contactor, and each door lock is connected to a contactor MS. The first normally closed contact (1, 2) and the second normally closed contact (7, 8) of the contactor MS are connected in series at both ends of the door lock; the first normally open contact (3, 4) and the second normally open contact (5, 6) are connected in parallel at both ends of the door lock; the first normally open contact (3, 4) is connected to the door lock detection power supply, and the short-circuit output of the second normally open contact (5, 6) is connected to the controller 20 for collecting voltage signals.

[0043] The advantages of this door lock circuit arrangement design in this application embodiment are as follows: First, it simplifies the design, allowing for future expansion to elevators with more doors, such as four doors, by simply adding an additional door circuit to both the hall door lock circuit and the car door lock circuit. This is suitable for directly expanding to four or more doors. Second, it ensures that all door locks are detected completely independently, without interference, with each door lock circuit designed separately. Third, this solution achieves individual detection for each door lock circuit simply by adding a door lock contactor, simultaneously resolving the issue of multiple doors being simultaneously connected and thus undetectable, rather than requiring a custom-developed door lock detection board. Figure 3 The solution adds six contactors (MS1, MS2, MS3, MS4, MS5, and MS6) to independently detect their respective door locks and determine if a door lock has been short-circuited. The advantage of this solution is that it can detect both single and multiple short-circuited door locks. Furthermore, the cost is low due to the addition of contactors, eliminating the need for custom development of a dedicated door lock detection system. This not only solves the safety hazard of existing solutions failing to detect simultaneous connection of two door lock circuits, but also easily expands the number of doors that can be opened. For example, for a four-door system, only an additional MS7 and MS8 door lock contactor need to be added to the hall door circuit and car door circuit respectively, all at a low cost. Fourth: The solution uses the door closing signal to control the door lock detection contactor, thereby triggering the door lock circuit detection. This does not involve protocol or communication control, relying solely on external signal input, making it completely independent of the control system and compatible with different manufacturers' control systems. There is no need to develop a custom door lock detection logic protocol.

[0044] In one example embodiment, the circuit diagram of the detection device for the hall door lock circuit is as follows: Figure 5 As shown, the circuit diagram of the detection device for the car door lock circuit is as follows: Figure 6 As shown, the specific detection principle is as follows: when the elevator control system issues a door closing command, it triggers the corresponding door lock contactor to operate. By identifying whether the corresponding door lock short-circuit output signal is present, it can be determined whether the corresponding hall door or car door lock is short-circuited.

[0045] When the elevator's front door closes, the front door closing DC signal triggers the MS1 and MS4 door lock contactors, which in turn triggers the short-circuit output signals of the front hall door lock DS and the front car door lock GS. By identifying whether there are signals at the DS and GS short-circuit outputs, it can be determined whether the front hall door DS and the front car door lock GS are short-circuited. Similarly, when the elevator's rear door closes, the rear door closing RDC signal triggers the MS2 and MS5 door lock contactors, which in turn triggers the short-circuit output signals of the rear hall door lock RDS and the rear car door lock RGS. By identifying whether there are signals at the RDS and RGS short-circuit outputs, it can be determined whether the rear hall door RDS and the rear car door RGS are short-circuited. When the elevator side door closes, the side door closing LDC signal triggers the MS3 and MS6 door lock contactors to operate, which in turn triggers the short-circuit output signals of the side hall door lock LDS and the side car door lock LGS. By identifying whether there are signals in the short-circuit output of LDS and LGS, it can be determined whether the side hall door LDS and the side car door LGS are short-circuited.

[0046] Please see Figure 5 and Figure 6 When the front door closes, the control system sends a front door closing signal DC to the door system. After receiving the closing signal DC, the door system controller 20 sends a detection signal to contactors MS1 and MS4 based on the door closing signal, triggering contactors MS1 and MS4 to operate. This causes contacts 3 and 4 of contactor MS1 to conduct, and contacts 5 and 6 to conduct. The door lock detection power supply passes through contacts 3 and 4 of MS1, H2-H1, and then through contacts 6 and 5 of contactor MS1 to the DS short-circuit output signal. If the front hall door locks H1 and H2 are short-circuited at this time (where H1 and H2 represent the hall door lock contacts, the same below), the entire circuit is conducting, and the DS short-circuit output signal is output, indicating that the front hall door locks DS are short-circuited. Conversely, if the front hall door locks H1 and H2 are not short-circuited, this circuit will not conduct, indicating that the front hall door locks are not short-circuited. Similarly, when contacts 3 and 4 of the MS4 contactor are turned on, and contacts 5 and 6 are turned on, the door lock detection power supply passes through contacts 3 and 4 of the MS4 contactor, through C2 and C1, and then through contacts 6 and 5 of the MS4 contactor to the GS short-circuit output signal. If the front car door locks C1 and C2 are short-circuited at this time, the entire circuit is turned on, and the GS short-circuit output signal will have a signal output, which means that the front car door locks GS are short-circuited. Conversely, if the front car door locks C1 and C2 are not short-circuited (where C1 and C2 represent the front car door lock contacts, the same below), this circuit will not be turned on, which means that the front car door locks are not short-circuited.

[0047] In one embodiment, the hall door lock circuit includes a hall door lock detection point for outputting a hall door lock signal, and the car door lock circuit includes a car door lock detection point for outputting a car door lock signal. The controller is also used to determine, based on the hall door lock signal, whether a hall door lock in the hall door lock circuit is short-circuited after the elevator door has opened to the correct position, and to determine, based on the car door lock signal, whether a car door lock in the car door lock circuit is short-circuited.

[0048] For details, please refer to Figures 4 to 6 The hall door lock circuit includes a hall door lock detection point for outputting a hall door lock signal DW. This detection point is used to detect whether the front hall door lock DS, rear hall door lock RDS, and side hall door lock LDS in the hall door lock circuit are short-circuited. The car door lock circuit includes a car door lock detection point for outputting a car door lock signal DFC. This detection point is used to detect whether the front car door lock GS, rear car door lock RGS, and side car door lock LGS in the car door lock circuit are short-circuited.

[0049] Please see Figure 5 If a single jumper wire is used to short-circuit multiple hall doors simultaneously, such as directly shorting H1 and H4, which simultaneously shorts the front hall door lock and the rear hall door lock, a signal input will be detected at the hall door lock detection point when either the front or rear door is opened, or when both doors are opened simultaneously. This indicates that the hall door lock is short-circuited. If H1 and H4 are not short-circuited, there will be no signal input at the hall door lock detection point, indicating that the lock is not short-circuited. Similarly, the detection principle is the same when simultaneously shorting three door locks (front hall door lock, rear hall door lock, and side hall door lock) or any two hall door locks. However, if multiple jumper wires are used to short-circuit two or more door locks simultaneously, not only can the DW or DFC signals be used for identification, but the corresponding door lock short-circuit output signal can also be used for identification.

[0050] The specific testing principles for the hall door lock testing point and the car door lock testing point are as follows:

[0051] The controller 20 receives the hall door lock signal DW output from the hall door lock detection point and the car door lock signal DFC output from the car door detection point. After the elevator door is in position, the controller 20 determines whether the hall door lock circuit is short-circuited based on the hall door lock signal DW and whether the car door lock circuit is short-circuited based on the car door lock signal DFC. If the controller 20 does not detect the hall door lock signal DW input (i.e., the hall door lock detection point is open), it means that the hall door lock is not short-circuited. If the controller 20 detects the hall door lock signal DW input (i.e., the hall door lock detection point is not open), it means that the hall door lock is short-circuited. If the controller 20 does not detect the car door lock signal DFC input (i.e., the car door lock detection point is open), it means that the car door lock is not short-circuited. If the controller 20 detects the car door lock signal DFC input (i.e., the car door lock detection point is not open), it means that the car door lock is short-circuited.

[0052] This utility model's elevator door lock circuit detection device, after the elevator door is fully open, first checks whether the hall door lock detection point and the car door lock detection point are normally disconnected. If they are not normally disconnected, it detects the input of the hall door lock signal DW and / or the car door lock signal DFC, determining that the door lock is short-circuited. The hall door lock detection point not being disconnected indicates that the hall door lock is short-circuited, and the car door lock detection point not being disconnected indicates that the car door lock is short-circuited. If the controller detects that the hall door lock detection point and the car door lock detection point are normally disconnected, it proceeds to the next detection step. After the elevator door is fully open and the door opening waiting time ends, the elevator control system sends a door closing signal. Upon receiving the door closing signal, the controller sends detection signals to the corresponding detection switches of the hall door lock and the car door lock to control the corresponding detection switches to close; it also collects the feedback signal from the output of the corresponding detection circuit and determines the short-circuit state of the corresponding hall door lock and the car door lock based on the feedback signal, thereby achieving redundant detection.

[0053] Figure 7 This is a schematic diagram of the triggering principle of the door lock detection contactor for the hall and sedan doors, such as... Figure 7 As shown, the door lock contactor is activated by the door closing signal. The DC24V shown in the diagram is just an illustration and is not limited to 24V contactors. In actual design, any voltage can be used, and contactors of different voltages can be selected according to the voltage level of your control system.

[0054] In one embodiment, the controller 20 further includes a plurality of I / O input ports, each of which is connected to the output terminal of the corresponding detection circuit 10, and each of the I / O input ports is used to collect the feedback signal of the corresponding output terminal of the detection circuit 10.

[0055] This application defines multiple IO input ports in the controller 20, and connects different shorting output points to the corresponding IO input ports. A signal input to an input port indicates that the corresponding door lock is shorted. Alternatively, the corresponding hall and car door shorting output points can be directly connected to the hall door lock detection points and car door lock detection points, simplifying the wiring.

[0056] In one embodiment, when the voltage signal is high, the corresponding hall door lock or car door lock is short-circuited; when the voltage signal is low, the corresponding hall door lock or car door lock is not short-circuited.

[0057] In a real-world elevator operation scenario, taking the example of a passenger needing to take the elevator from the side door (1st floor) to the front door (3rd floor), the elevator door lock circuit detection process is as follows:

[0058] Step 1: When a passenger arrives at the elevator door on the 1st floor of the side door, they press the LHB1 call signal to call the elevator to this floor. The elevator door will then open. (The call control logic is the same for the front door, back door, and side door. However, since the control system signals correspond to HB, RHB, and LHB respectively, the control system will automatically identify whether the pressed call signal belongs to HB, RHB, or LHB, and then call the elevator to the destination floor and control the corresponding elevator door to open.)

[0059] Step Two: After the elevator arrives at the 1st floor and the side door opens, once the elevator door is fully open, the system will first check whether the hall door lock detection point and the car door lock detection point are properly disconnected. If they are not properly disconnected, it is determined that the door locks are short-circuited. A not disconnected hall door lock detection point indicates that the side hall door lock is short-circuited, and a not disconnected car door lock detection point indicates that the side car door lock is short-circuited. If the system detects that the car door lock detection points are properly disconnected, it will proceed to the next step of the check.

[0060] Step 3: After the elevator door opens to the designated position, and the waiting time ends, the elevator issues a side door closing command (LDC). Upon receiving the door closing signal (LDC), door lock detection contactors MS3 and MS6 are energized, causing them to engage. This closes contacts 3 and 4 of MS3, and contacts 5 and 6 of MS3. The door lock detection power supply passes through contacts 3 and 4 of MS3, H6 and H5, and then through contacts 6 and 5 of MS3 to the LDS short-circuit output signal. If the side hall door lock (H6 and H5) is short-circuited at this time, the entire circuit is complete, and the LDS short-circuit output signal is active, indicating that the side hall door lock is engaged. If LDS is short-circuited, then if the side door locks H6 and H5 are not short-circuited, this circuit will not be connected, indicating that the side door locks are not short-circuited. Similarly, after the MS6 contactor is energized, contacts 3 and 4 of the MS6 contactor are connected, and contacts 5 and 6 are connected. The door lock detection power supply passes through contacts 3 and 4 of MS6, through C6 and C5, and then through contacts 6 and 5 of the MS6 contactor to the LGS short-circuit output signal. If the side car door locks C6 and C5 are short-circuited at this time, then the entire circuit is connected, and the LGS short-circuit output signal is output, indicating that the side car door locks LGS are short-circuited. Conversely, if the side car door locks C6 and C5 are not short-circuited, this circuit will not be connected, indicating that the side car door locks are not short-circuited.

[0061] Step 4: After the passenger enters the car, register the CB3 car call command. The elevator will automatically call to the 3rd floor and open the 3rd floor elevator door. (The control logic for the car call signals for the front door, rear door, and side door is the same. However, since the signals connected to the control system correspond to CB, RCB, and LCB respectively, the control system will automatically identify whether the pressed call signal belongs to CB, RCB, or LCB, and then run the elevator to the destination floor and control the corresponding elevator door to open.)

[0062] Step 5: After the elevator arrives at the 3rd floor and the front door opens, once the elevator door is fully open, the system will first check whether the hall door lock detection point and the car door lock detection point are normally disconnected. If they are not normally disconnected, it is determined that the door locks are short-circuited. If the car door lock detection point is not disconnected, it means that the side hall door lock is short-circuited; if the car door lock detection point is not disconnected, it means that the side car door lock is short-circuited. If the system detects that the car door lock detection point and the car door lock detection point are normally disconnected, it will proceed to the next step of the test.

[0063] Step Six: After the elevator door opens to the designated position, and the waiting time ends, the elevator issues a front door closing command DC. Upon receiving the door closing signal DC, door lock detection contactors MS1 and MS4 are energized, causing them to engage. This closes contacts 3 and 4 of MS1, and contacts 5 and 6 of MS1. The door lock detection power supply passes through contacts 3 and 4 of MS1, then through H2 and H1, and finally through contacts 6 and 5 of MS1 to the DS short-circuit output signal. If the front hall door locks H2 and H1 are short-circuited at this time, the entire circuit is complete, and the DS short-circuit output signal indicates that the front hall door lock is engaged. If DS is short-circuited, then if the front door locks H2 and H1 are not short-circuited, this circuit will not be connected, indicating that the front door locks are not short-circuited. Similarly, after the MS4 contactor, contacts 3 and 4 of the MS4 contactor are connected, and contacts 5 and 6 are connected. The door lock detection power supply passes through contacts 3 and 4 of MS4, through C2 and C1, and then through contacts 6 and 5 of the MS4 contactor to the GS short-circuit output signal. If the front car door locks C2 and C1 are short-circuited at this time, then the entire circuit is connected, and the GS short-circuit output signal has a signal output, indicating that the front car door locks GS are short-circuited. Conversely, if the front car door locks C2 and C1 are not short-circuited, this circuit will not be connected, indicating that the front car door locks are not short-circuited.

[0064] Step 7: After the passenger exits the elevator at the front door on the 3rd floor, the elevator closes normally after detecting that the door lock is not short-circuited on the 3rd floor.

[0065] Among them, the internal call elevator signals CB, RCB, and LCB can be designed according to the situation. Whether three signals are needed at the same time is up to the situation. For example, if the front door, back door, and side door are opened at the same time on each floor, then only one CB signal needs to be designed to call the elevator to the target floor and open all the doors.

[0066] Furthermore, the door lock circuit detection device also includes an alarm, which is installed inside the elevator car and connected to the controller 20. The alarm is used to issue an alarm when the hall door lock or the car door lock is short-circuited.

[0067] This utility model also provides an elevator, including a door lock circuit and a door lock circuit detection device as described in any of the above embodiments.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An elevator door lock circuit detection device, characterized in that, The door lock circuit includes a hall door lock circuit and an elevator door lock circuit connected in series. The hall door lock circuit includes at least three hall door lock sub-circuits in different locations, all of which are connected in series. Each hall door lock sub-circuit includes hall door locks for each floor connected in series. The elevator door lock circuit includes at least three elevator door locks in different locations, all of which are connected in series. The door lock circuit detection device includes: Multiple detection circuits, each of which includes a detection switch, and each detection switch is respectively connected to the corresponding hall door lock or the car door lock; The controller, connected to the input terminals of each of the detection circuits, is used to send detection signals to the detection switches of the corresponding hall door lock and the car door lock according to the door closing signal, so as to control the corresponding detection switches to close; and to collect the feedback signals from the output terminals of the corresponding detection circuits, and determine the short-circuit state of the corresponding hall door lock and the car door lock according to the feedback signals.

2. The door lock circuit detection device according to claim 1, characterized in that, The detection switch includes a first normally closed contact, a second normally closed contact, a first normally open contact, and a second normally open contact; The first normally closed contact and the second normally closed contact are connected in series at both ends of the hall door lock or the car door lock; the first normally open contact and the second normally open contact are connected in parallel at both ends of the hall door lock or the car door lock. The controller sends a detection signal to the corresponding detection switch based on the door closing signal, and controls the first normally open contact and the second normally open contact of the corresponding detection switch to close.

3. The door lock circuit detection device according to claim 1, characterized in that, The detection switch includes a contactor or a relay.

4. The door lock circuit detection device according to claim 1, characterized in that, The controller also includes multiple I / O input ports, each of which is connected to the output terminal of the corresponding detection circuit. Each I / O input port is used to collect the feedback signal from the output terminal of the corresponding detection circuit.

5. The door lock circuit detection device according to claim 1, characterized in that, The feedback signal includes a voltage signal.

6. The door lock circuit detection device according to claim 5, characterized in that, When the voltage signal is high, the corresponding hall door lock or car door lock is short-circuited; when the voltage signal is low, the corresponding hall door lock or car door lock is not short-circuited.

7. The door lock circuit detection device according to claim 1, characterized in that, The door closing signal is generated by the elevator control system after the elevator door has opened to the correct position and after the waiting time for the door to open has ended.

8. The door lock circuit detection device according to claim 1, characterized in that, The door lock circuit detection device also includes an alarm, which is installed inside the elevator car and connected to the controller. The alarm is used to issue an alarm when the hall door lock or the car door lock is short-circuited.

9. The door lock circuit detection device according to claim 1, characterized in that, The hall door lock circuit includes a hall door lock detection point for outputting a hall door lock signal, and the car door lock circuit includes a car door lock detection point for outputting a car door lock signal. The controller is also used to determine, based on the hall door lock signal, whether there is a short circuit in the hall door lock circuit and whether there is a short circuit in the car door lock circuit after the elevator door has opened to the correct position.

10. An elevator, characterized in that, include: The door lock circuit detection device as described in any one of claims 1 to 9.

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