WO2019205582A1

WO2019205582A1 - Advance door opening module and elevator control system

Info

Publication number: WO2019205582A1
Application number: PCT/CN2018/115064
Authority: WO
Inventors: 余福斌
Original assignee: 苏州汇川技术有限公司
Priority date: 2018-04-26
Filing date: 2018-11-12
Publication date: 2019-10-31
Also published as: CN108423528A

Abstract

Disclosed are an advance door opening module and an elevator control system. The advance door opening module comprises multiple control channels and one door sealing path, wherein the door sealing path is connected in parallel to a door lock in a safety loop; each of the control channels is used for outputting a door lock short-circuit signal when an elevator speed is within a pre-set range and a door zone signal is valid; and the door sealing path short-circuits the door lock when all the control channels output the door lock short-circuit signal, so as to achieve advance door opening, so that the door opening efficiency of an elevator system is highest, and mutual verification is achieved, and the reliability of the entire system is improved. Since a control channel comprises a programmable controller, the timing sequence is simple, and the circuit is simple.

Description

Advance trick module and elevator control system

[0001] The present invention relates to the field of elevators, and more particularly to an early door opening module and an elevator control system.

Background technique

[0002] The early opening door module in the elevator system has an early door opening function, and FIG. 1 shows an implementation of an existing early door opening module. The early door opening scheme in Fig. 1 is a pure mechanical switch structure, and the function of opening the door ahead is realized by interlocking safety relays. This solution has the problem of low reliability. In addition, the scheme of Fig. 1 has the problem that the cost of the safety relay is high and the control timing is complicated.

technical problem

The technical problem to be solved by the present invention is to provide an early door opening module and an elevator control system in view of the above-mentioned low reliability defects of the prior art.

Problem solution

Technical solution

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing an early door opening module for an elevator system, the early door opening module comprising a plurality of control channels and a door closing path, the door closing path and the safety circuit The door locks are connected in parallel, and each of the control channels is configured to output a door lock shorting signal when the elevator speed is within a preset range and the door area signal is valid, and the door closing path outputs the door lock shorting signal when all the control channels output the door lock Shorten the door lock to open the door in advance.

[0005] In the early door opening module of the present invention, the door closing path includes a plurality of controllable switches connected in series, and the control ends of the plurality of controllable switches are respectively connected to the plurality of control channels in a one-to-one correspondence Each of the controllable switches is configured to switch from an off state to an on state when receiving a door lock shorting signal output by the corresponding control channel.

In the advance opening module of the present invention, the controllable switch includes a relay.

In the advance opening module of the present invention, each of the control channels includes a programmable controller.

[0008] In the early door opening module of the present invention, the door zone signal includes an upper leveling signal and a lower leveling signal; each of the programmable controllers receives an effective upper level within a preset time interval. Layer signal and effective Outputting a valid feedback signal to the control board when the lower level signal is received; the control board outputs a gate signal to each of the programmable signals when receiving an effective feedback signal of all programmable controllers and determining that the elevator speed is within a preset range a programmable controller; each of the programmable controllers outputs a door lock shorting signal when receiving the door closing signal.

[0009] In the pre-opening module of the present invention, the input of each of the programmable controllers includes an upper leveling signal input end, a lower leveling layer signal input end, and a door closing signal input end, all of the programmable control The upper level signal input end of the device is connected in common, the lower level signal input end is connected in common, and the gate signal input end is connected in common.

[0010] In the early opening module of the present invention, the method further includes:

[0011] a first isolation module is simultaneously connected to all of the upper level signal input ends of the programmable controller, the first isolation module is configured to externally connect an upper leveling sensor mounted on the car door and receive the The upper leveling signal output by the upper level sensor is sent to the programmable controller;

[0012] a second isolation module is simultaneously connected to all of the lower level signal input ends of the programmable controller, and the second isolation module is configured to externally connect the lower leveling sensor mounted on the car door and receive the lower leveling layer a lower level signal output by the sensor and sent to the programmable controller;

[0013] a third isolation module is connected to the gate signal input end of the programmable controller at the same time, and is connected to the control board, and the third isolation module is configured to receive the door issued by the control board. Signals are sent to the programmable controller.

[0014] In the pre-opening module of the present invention, all of the programmable controllers communicate with each other using a serial peripheral interface SPI bus, and any of the programmable controllers are connected through a fourth isolation module. The control board is configured to upload an effective feedback signal to the control board when both the upper leveling signal and the lower leveling signal are valid.

[0015] In the early door opening module of the present invention, a power module for supplying power to the entire early door opening module is further included.

[0016] The present invention also discloses an elevator control system including a control panel, a door zone signal sensor, and an advance door opening module as described above.

Advantageous effects of the invention

Beneficial effect

[0017] The pre-opening module and the elevator control system embodying the present invention have the following beneficial effects: When the speed of the elevator is lower than the preset low speed during the running stop, and the door area signal is valid, the early door opening module can maintain the elevator to continue running by shorting the door lock in the safety circuit, thereby realizing the door opening in advance, thereby enabling the elevator system to open the door efficiently. The highest, and in the present invention, a plurality of control channels are used to simultaneously control the opening of the door at the same time, and any one of the control channels cannot open the door, thereby realizing mutual verification and improving the reliability of the entire system; further, the control channel of the present invention Includes programmable controller, simple timing and simple circuit.

Brief description of the drawing

DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief description of the embodiments or the drawings used in the technical description, which will be apparent from the following description. The drawings are merely examples of the invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work:

1 is a schematic structural view of an early door opening module in the prior art;

2 is a schematic structural diagram of an early door opening module according to Embodiment 1 of the present invention;

3 is a schematic structural diagram of an early door opening module according to Embodiment 2 of the present invention;

4 is a timing chart of the operation of the second embodiment of the present invention.

Invention embodiment

Embodiments of the invention

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and comprehensive.

[0024] It should be noted that the words “simultaneously” or other similar terms are not limited to being absolutely equal or identical in mathematical terms, and may be engineering similar or acceptable in implementing the rights described in this patent. Within the error range. “Connected” or “connected” includes not only the direct connection of two entities, but also the indirect connection through other entities with beneficial improvements.

[0025] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terms used herein in the description of the invention are only It is intended to describe the specific embodiments and is not intended to limit the invention.

However, these constituent elements are not limited by these terms. The purpose of using these terms is simply to distinguish one component from another. For example, the first constituent element may be named as the second constituent element without departing from the scope of the invention, and similarly, the second constituent element may also be named as the first constituent element.

[0027] The general idea of the present invention is: constructing an early door opening module for an elevator system, comprising a plurality of control channels and a door closing path, the door closing path being parallel with the door locks in the safety circuit, each of the control channels The utility model is configured to output a door lock shorting signal when the elevator speed is within a preset range and the door area signal is valid, and the door closing path shorts the door lock when all the control channels output the door lock shorting signal to realize opening the door in advance

[0028] In order to better understand the above technical solutions, the above technical solutions will be described in detail in conjunction with the drawings and specific embodiments. It should be understood that the specific features of the embodiments and embodiments of the present invention are the technical solutions of the present application. The detailed description, rather than the limitation of the technical solution of the present application, can be combined with each other in the embodiments of the present invention and the technical features in the embodiments without conflict.

[0029] Embodiment 1

[0030] Referring to FIG. 2, the early door opening module in this embodiment includes a plurality of control channels and a door closing path, and the thick solid line portion indicates a door closing path, and the door closing path is connected in parallel with the door lock in the safety circuit. The control channel is configured to output a door lock shorting signal when the elevator speed is within a preset range and the door area signal is valid, and the door closing path shorts the door lock when all the control channels output the door lock shorting signal Realize the door opening in advance.

[0031] In this embodiment, the gate region signal can be detected by the gate region signal sensor, and the gate region signal includes an upper leveling signal and a lower leveling signal. Whether the elevator speed meets the requirements is judged by the control panel. A programmable controller is included in each of the control channels. Specifically, each of the programmable controllers outputs a valid feedback signal to the control board when receiving a valid upper leveling signal and a valid lower leveling signal within a preset time interval; the control board receives the The effective feedback signal of all programmable controllers and determining that the elevator speed is within a preset range (the preset range is generally a lower speed range, such as may be less than 0.3 m/s), outputting a gate signal to each of the described Programmable controller; each of the programmable controllers receives the The door lock shorting signal is output when the door closing signal is described.

[0032] Specifically, the input of each of the programmable controllers includes an upper leveling signal input end, a lower leveling layer signal input end, and a gate signal input end, and all of the programmable controller upper level signal input ends are connected And receiving the upper leveling signal, the lower leveling signal input end is connected and receiving the lower leveling signal, the sealing signal input end is connected in common and receiving the sealing signal, so that all the inputs of the programmable controller are completely consistent.

[0033] wherein the gated path includes a plurality of controllable switches connected in series, and the control ends of the plurality of controllable switches are respectively connected to the plurality of programmable controllers in one-to-one correspondence, and each of the controllable switches is used When the door lock shorting signal of the corresponding programmable controller output is received, it is switched from the off state to the on state. Since the plurality of controllable switches are connected in series, the gate path is only turned on when all of the controllable switches are turned on, thereby achieving system reliability.

[0034] The working principle of this embodiment is as follows: Referring to FIG. 2, the STO (Safe Torque Off) and the SBC (Safe Brake Control) respectively represent the running contactor and the brake contactor. ST0 and SBC are connected in series in the safety loop. In order for the elevator to operate normally, all safety switches in the safety circuit must be connected. Therefore, the ST0 and SBC can obtain power through the safety circuit, but if any safety switch in the safety circuit is broken, On, the power supply of the IjSTO and SBC will be disconnected and the elevator will not run. The door lock is a kind of safety switch of the safety circuit. The dotted arrow in Fig. 2 indicates the part of the safety circuit except the door lock. If the door lock is broken, the power supply of ST0 and SBC will be disconnected. When the door is opened normally, the door lock switch that controls the door lock is opened, so that the power supply of the door lock is disconnected, so that the door lock is in the open state in the safety circuit, and the door lock is broken, causing the safety circuit to be disconnected, thereby causing ST0 and SBC. The power supply is disconnected, eventually causing the elevator to stop running. In order to keep the elevator running, this embodiment adds a door closing path in parallel with the door lock, that is, as shown by the thick solid line in Fig. ₂ , the path will short the door lock when the elevator speed falls within the preset range, so When the door lock is opened, the safety circuit can be turned on by the path, so that the elevator can continue to operate without stopping due to the opening of the door lock switch, thereby achieving the door opening in advance.

[0035] Embodiment 2

[0036] Referring to FIG. 3, in the second embodiment, the programmable controller is specifically a microcontroller MCU. In this embodiment, two MCUs are used for description. Of course, it can be understood that the MCU is not limited to two, and can be customized according to requirements. set up. Correspondingly, the controllable switch adopts relays Relay 1 and Relay 2. MCU through control relay Whether the coil is powered or not, controls the opening and closing of the relay, and the MCU also monitors the status of the relay.

[0037] In this embodiment, the door area signal sensor includes an upper leveling sensor and a lower leveling sensor. The upper leveling signal FL1 and the lower leveling signal FL2 are respectively collected by an upper leveling sensor and a lower leveling sensor mounted on the car. Referring to FIG. 4, the gate signal Y, the upper leveling signal FL1, and the lower leveling signal FL2 are level signals, and both are active high.

[0038] Further, the early opening module in this embodiment further includes:

[0039] The first isolation module is simultaneously connected to the upper leveling signal input end of the plurality of MCUs, and is configured to externally connect the upper leveling sensor mounted on the car door and receive the upper leveling signal FL1 of the upper leveling sensor output And sending the upper leveling signal FL1 to the plurality of MCUs;

[0040] The second isolation module is simultaneously connected to the lower leveling signal input end of the plurality of MCUs, and is configured to externally connect the lower leveling sensor mounted on the car door and receive the lower leveling signal FL2 output by the lower leveling sensor, and lower the leveling signal Layer signal FL2 is sent to multiple MCUs;

[0041] The third isolation module is connected to the gate signal input end of the plurality of MCUs at the same time, and is connected to the control board for receiving the gate signal Y sent by the control board and sent to the plurality of MCUs.

[0042] Specifically, the first isolation module, the second isolation module, and the third isolation module may adopt an optocoupler isolator. 10 ports of the MCU selected by the upper level signal input end, the lower leveling signal input end, and the closing signal input end of the M CU.

[0043] Preferably, the SPI (Serial Peripheral Interface) bus communication is used between the two MCUs, so that the status check between the MCUs is implemented, and any MCU is connected through the fourth isolation module. The control board uploads a feedback signal to the control board when the door lock is shorted.

[0044] Further, the embodiment further includes a power module for supplying power to the entire early door opening module.

[0045] Further, the entire pre-opening module further includes a reset circuit and an electrically erasable programmable read only memory (EEPROM), reset ports of all MCUs. All are connected to the reset circuit, and the IIC interface of any one of the MCUs is connected to the EEPROM.

[0046] The working process of this embodiment is as follows: Referring to FIG. 3-4, after the system is powered on, when MCU1 and MCU2 detect that the upper leveling signal 1 (FL1) is valid, and the lower leveling signal 2 (FL2) is detected. When valid, the feedback signal is valid to the control board. The control board detects the valid feedback signal and determines that the elevator speed is at the preset. In the range, the output gate signal Y is supplied to the MCU1, MCU2, MCU1, and MCU2 to the coils of the relays Rela yl and Relay2, and the related contacts of Relay 1 and Relay 2 act to turn on the gate path, thereby shorting the door lock, STO and The SBC runs to achieve the effect of opening the door in advance. When the upper leveling signal 1 (FL1) is invalid or the lower leveling signal 2 (FL2) is invalid, the feedback signal is invalid and the gate signal is not output.

[0047] Embodiment 3

[0048] Embodiment 3 discloses an elevator control system including a control panel, a door zone signal sensor, and the early door opening module described above. The door zone signal sensor includes an upper leveling sensor and a lower leveling sensor. For the opening of the module in advance, refer to the first embodiment or the second embodiment, and details are not described herein again.

[0049] In summary, the early opening door module and the elevator control system embodying the present invention have the following beneficial effects: The present invention advances in the case where the speed of the elevator is lower than the preset low speed during the running stop and the door area signal is valid. The door opening module can maintain the elevator to continue running by shorting the door lock in the safety circuit, realizing the door opening in advance, so that the door opening efficiency of the elevator system is maximized, and the plurality of control channels are used in the invention to simultaneously control the door opening in advance, and any control channel has problems. The door can not be opened, so the mutual verification is realized, and the reliability of the whole system is improved. Further, the control channel of the invention includes a programmable controller, and the timing is simple and the circuit is simple.

Industrial applicability

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive. The skilled person is able to make various forms within the scope of the present invention without departing from the spirit and scope of the invention as claimed.

Claims

Claim

[Claim 1] An early door opening module for an elevator system, wherein the early door opening module includes a plurality of control channels and a door closing path, and the door closing path is parallel with the door locks in the safety circuit, each The control channel is configured to output a door lock shorting signal when the elevator speed is within a preset range and the door zone signal is valid, and the door closing path shorts the door lock when all the control channels output the door lock shorting signal In order to achieve early opening.

[Claim 2] The early door opening module according to claim 1, wherein the door closing path includes a plurality of controllable switches connected in series, a control end of the plurality of controllable switches and the plurality of control The channels are respectively connected in one-to-one correspondence, and each of the controllable switches is configured to switch from an off state to an on state when receiving a door lock shorting signal outputted by the corresponding control channel.

[Claim 3] The early door opening module according to claim 2, wherein the controllable switch comprises a relay.

[Claim 4] The early door opening module according to claim 1, wherein each of the control channels includes a programmable controller.

[Claim 5] The early door opening module according to claim 4, wherein the door zone signal comprises an upper leveling signal and a lower leveling signal; each of the programmable controllers is within a preset time interval Receiving a valid upper leveling signal and a valid lower leveling signal, outputting a valid feedback signal to the control board; the control board receives an effective feedback signal of all programmable controllers and determines that the elevator speed is within a preset range Internally, a gate signal is output to each of the programmable controllers; each of the programmable controllers outputs a door lock shorting signal upon receiving the gate signal.

[Claim 6] The early door opening module according to claim 5, wherein the input of each of the programmable controllers comprises an upper leveling signal input end, a lower leveling layer signal input end, and a door closing signal input end, all The upper level signal input end of the programmable controller is connected in common, the lower level signal input end is connected in common, and the gate signal input end is connected in common.

[Claim 7] The pre-opening module according to claim 6, further comprising:

a first isolation module is simultaneously connected to all of the upper level signal input ends of the programmable controller, and the first isolation module is used for externally connecting the upper leveling sensor mounted on the car door Receiving an upper leveling signal output by the upper leveling sensor, and sending the signal to the second isolation module of the programmable controller, and simultaneously connecting with the lower leveling signal input end of all the programmable controllers, the second The isolation module is configured to externally connect the lower leveling sensor mounted on the car door and receive the lower leveling signal output by the lower leveling sensor, and send the signal to the programmable controller

a third isolation module is connected to the gate signal input end of the programmable controller, and is connected to the control panel, and the third isolation module is configured to receive a gate signal sent by the control board, and Send to the programmable controller.

[Claim 8] The early door opening module according to claim 6, wherein all of the programmable controllers communicate with each other using a serial peripheral interface SPI bus, and any of the programmable controllers pass The fourth isolation module is connected to the control board, and uploads an effective feedback signal to the control board when both the upper leveling signal and the lower leveling signal are valid.

[Claim 9] The early door opening module according to claim 1, further comprising a power module for supplying power to the entire early door opening module.

[Claim 10] An elevator control system, comprising: a control panel, a door zone signal sensor, and the early door opening module according to any one of claims 1-9.