CN1245325C

CN1245325C - Controller for gate of elevator

Info

Publication number: CN1245325C
Application number: CN 01105789
Authority: CN
Inventors: 刘玉斌
Original assignee: Shanghai Mitsubishi Elevator Co Ltd
Current assignee: Shanghai Mitsubishi Elevator Co Ltd
Priority date: 2001-03-27
Filing date: 2001-03-27
Publication date: 2006-03-15
Anticipated expiration: 2021-03-27
Also published as: CN1376629A

Abstract

The present invention relates to an elevator door controller which comprises a pulse counter for proportionally moving an elevator door, a device capable of obtaining the operating speed of the door according to the counting values, a device for integrating time when the operating speed of the elevator door is detected after the door begins to open or close, a judgment device for judging the abnormality of a door switch when the detected integral value reaches a preset value, and a decelerator for fast decelerating the operating speed of the door and slowly opening or closing the door. The elevator door controller of the present invention can ensure the switch of the elevator door to be under control, and ensure passengers' safety even when the pulse counter and a speed instruction generator are in malfunction.

Description

The control setup of elevator door

Technical field

The present invention relates to a kind of control setup of elevator door, relate in particular to the fault that can prevent and cause the control device for elevator door that door is out of control because of detecting the mobile location counter of door.

Background technology

Control device for elevator door in the past to counting with the ratiometric output pulse count that is moved into of door, according to the speed command of this count value generator gate, is taken this, and makes door switch and closes acceleration and slow down, and carries out the Push And Release action of door.

But, as mentioned above, in control device for elevator door in the past, the speed command of door switch is by producing with the count value that is moved into the ratiometric output signal of door, therefore, at the counting circuit et out of order of output signal or when misoperation occurring, concerning the people who uses elevator, be breakneck, thereby there is unsafe like this factor in control setup in the past.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of control device for elevator door that can guarantee elevator user's safety.

For solving the problems of the technologies described above, the control setup of elevator door of the present invention, comprise electrical motor, be arranged on the coder on the electrical motor, the output signal of this coder inputs to speed arithmetical circuit and position operation counter, described position operation counter is used for the impulse singla of coder is counted, and described speed arithmetical circuit is used for the running velocity of calculating motor;

The speed command producer is connected with the position operation counter, is used to produce the speed value of elevator door operation;

The velocity deviation arithmetical circuit is connected with speed command producer, speed arithmetical circuit, is used for the velocity deviation of calculating motor;

Current controller is connected with the velocity deviation arithmetical circuit, is used for the control motor operation;

Wherein: also comprise the rate integrating arithmetical circuit, it is connected with the speed arithmetical circuit, is used for the running velocity of electrical motor is carried out integral operation, judges whether the operation of elevator door is normal;

The speed command limit circuit is connected with the rate integrating arithmetical circuit, is used to send urgent deceleration instruction;

The integrated value that calculates when the rate integrating arithmetical circuit reaches predetermined value and just is judged as the elevator door operation exception when above, and the speed command limit circuit sends urgent deceleration instruction to current controller, and motor braking is stopped.

The present invention is conceived in common door switch action, and the door running velocity of each door complete shut-down-standard-sized sheet realizes that to the integrated value of time defined is arranged, when the electrical motor real-world operation velocity product score value after the schedule time is judged as when predetermined value is above unusually.In this case, the urgent deceleration reduces the moving velocity of door, or motor braking stopped.Thereby guarantee safety.

Description of drawings

Describe in order in more detail technology of the present invention to be constituted, as follows below in conjunction with description of drawings:

Fig. 1 is the block scheme of the control setup of elevator door of the present invention;

Fig. 2 is the action specification figure of the control setup of elevator door of the present invention.

The specific embodiment

Below, with reference to description of drawings one embodiment of the present of invention.Fig. 1 is the block scheme of embodiments of the invention.Among the figure, the 1st, detect the switch of a complete shut-down, the 2nd, detect the switch of a standard-sized sheet, the 3rd, the rate integrating operational loop, after its took place according to the instruction of opening the door or close the door, the computation speed integrated value was when this integrated value reaches predetermined value when above, make the unusual judgement of switch, according to the action timing reset of full cut-off switch 1 or standard-sized sheet switch 2.The 4th, the electrical motor of driving gate action, the 5th, produce the proportional output pulse coder of number of revolutions with electrical motor 4, the 6th, the speed operational loop, calculate the running velocity of electrical motor according to pulse count, the 7th, the location counter that door moves, the 8th, to answering the door out or door closes instruction, speed value from the operation of the count value generator gate of position operation counter 7, the 9th, the velocity deviation arithmetic and logic unit, the 10th, the speed command limits value, it is as speed reduction gearing, and certain limit is exported in the output in corresponding speed integral operation loop, to avoid a moving velocity to exceed essential value, in other words at rate integrating operational loop 3 decision gate switches when being unusual, make that door is urgent to slow down, make door carry out switch with low velocity, the 11st, current controller, it is according to the velocity deviation value of velocity deviation arithmetic and logic unit 9 and the limits value of speed command limit circuit 10, output motor 4 necessary signals, and the 13rd, produce the elevator control panel of the instruction of opening the door or close the door.

Below with reference to Fig. 2 action of the present invention is described.Among Fig. 2, be the usual action of closing the door (a), the action of closing the door when being unusual (b).

In conjunction with (a) among Fig. 2, under normal circumstances, the output speed command value that loop 8 takes place speed command is that the count value according to position operation counter 7 produces, normal motor speed figure such as v1, at t1 constantly, speed pattern integrated value S1=∫ vldt just is made as s1 to t1 rate integrating predetermined value constantly.So analogize, just can obtain the rate integrating predetermined value of a plurality of moment point.Again in conjunction with (b) among Fig. 2, under abnormal condition, position operation counter 7 hinders and the positional value of the electrical motor exported during with regard to mal for some reason, the speed value that speed command takes place to export in loop 8 can be incorrect yet, the actual speed figure of electrical motor just may be as v2, and the high-speed cruising time is elongated, even also do not slow down when contract fully, thereby, be dangerous state to the user of elevator.At t1 constantly, velocity product score value S2=∫ v2dt is greater than rate integrating predetermined value S1=∫ vldt, and rate integrating operational loop 3 can be judged to be the remarkable action of closing the door.In this case, speed command limit circuit 10 produces urgent deceleration instruction, a running velocity is reduced, or motor braking is stopped.By this, even position operational loop 7 et out of orders, it is unstable that the door switch speed command becomes, and the operation of elevator door can be not out of control yet.

As mentioned above, according to the present invention, the in service simultaneous pulse count of elevator door is being counted and from the control device for elevator door of this count value generator gate running velocity instruction, include and detect the speed detection device of opening or closing the door from door, when being higher than predetermined value, this velocity product score value just is judged as the unusual judgment means of door switch, respond the output of this judgment means and make the very fast deceleration of a running velocity, make the speed reduction gearing of door with low speed switch, thereby, can guarantee user's safety.

Claims

1, a kind of control setup of elevator door, comprise electrical motor, be arranged on the coder on the electrical motor, the output signal of this coder inputs to speed arithmetical circuit and position operation counter, described position operation counter is used for the impulse singla of coder is counted, and described speed arithmetical circuit is used for the running velocity of calculating motor;

It is characterized in that: also comprise the rate integrating arithmetical circuit, it is connected with the speed arithmetical circuit, is used for the running velocity of electrical motor is carried out integral operation, judges whether the operation of elevator door is normal;