JPH09110347A - Door open controller of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of signal lines of a tail code as securing reliability and responsiveness to the signal by a door-open request signal composition means which composing each individual output signal of plural trouble detecting sensors installed in a carto one integrated door-open request signal as each individual door-open request signal, and transmitting it to a control panel. SOLUTION: Aside from a door-open command signal out of a door-open button 7 installed in a control panel, each signal out of respective trouble detecting sensors including a mechanical door safety 8 operating when a door tip is pushed is inputted into a door-open request signal composing means 12, integrating it to one integrated door-open request signal S1 hereat. Then this signal S1 is inputted into a door-open request signal input processing means 14 via a transfer passage 4c. Here, on the basis of each individual door-open request signal and the integrated door-open request signal S1 and so on from a transfer processing means 6, a door-open signal S2 is generated, is output it to a door controller 18 via another transfer passage 4d. This door controller 18 drives and controls a door motor 19 for opening or closing the door by this door-open signal S2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening control device.

[0002]

2. Description of the Related Art In order to smoothly and safely get in and out of an elevator car, a door opening button is provided on the operation panel in the car, and the door is kept open while the button is pushed, and the tip of the door is attached to the door. Anomaly detection such as mechanical door safety that operates when is pressed, photoelectric tube door safety that operates by blocking the optical axis stretched to the left and right of the door, ultrasonic door safety that detects obstacles near the door by reflection of ultrasonic waves A sensor is provided, and when at least one of these is operated, the door is kept open to prevent a person or thing from being caught in the door.

Further, an overload detector which operates when the load in the car exceeds a predetermined value, for example, a rated value, so that the car does not run in a state where the load in the car exceeds a predetermined limit value. If this is activated, the door is kept open when it operates and the car buzzer sounds to suspend the running.

[0004]

As exemplified above, there are many signals for maintaining the door open state, and these signals are important ones. The opening operation must be reliably responded.

Further, when the detection signal is issued while the door is closed, the response time until the door is opened must be as short as possible. Especially in door safety operation, a slow response may make passengers fear.

Therefore, there is a situation in which the number of tail code signal lines is reduced by transmitting the transmission signal between the car and the control panel via a common multiplex transmission line, for example, a time division multiplex transmission line. However, as in the past, all safety signals for maintaining the door open state are actually transmitted via dedicated lines, that is, space-division type transmission lines, so the number of signal lines included in the tail cord is gradually reduced. do not do. If the number of signal lines of the tail cord is large, not only the cost of the tail cord is increased but also the number of installation steps is increased. Therefore, from this aspect as well, there is a strong demand for reducing the number of signal lines of the tail cord.

Therefore, an object of the present invention is to provide an elevator door opening control device capable of reducing the number of tail cord signal lines while ensuring reliability and responsiveness to a signal that keeps the car door open. is there.

[0008]

In order to achieve the above object, the present invention is laid between a car controller provided in a car and a control panel provided in a machine room, and is provided for each individual signal. An individual door open request for each output signal of a plurality of space division type transmission lines and at least one multiplex transmission line provided in common for a plurality of signals and a plurality of abnormality detection sensors provided in the car. 1 as a signal
A door opening request signal synthesizing means for synthesizing into one integrated door opening request signal and transmitting it to the control panel via the space division type transmission line; and means for transmitting an individual door opening request signal to the control panel via the multiple transmission line,
An elevator door opening control device comprising a door opening request signal input processing means for performing door opening / closing control by using an integrated door opening request signal transmitted to a control panel as a main signal and an individual door opening request signal as a backup signal. It is provided.

Further, according to the present invention, a plurality of space division type transmission lines and a plurality of signals which are laid between a car controller provided in a car and a control panel provided in a machine room and provided for each signal are provided. A tail cord that includes at least one multiplex transmission line that is provided in common with each other, and individual output signals of a plurality of abnormality detection sensors that are provided in the car are combined into an integrated door opening request signal as an individual door opening request signal. Door opening request signal synthesizing means for transmitting to the control panel via the space division type transmission line, means for transmitting individual door opening request signal to the control panel via multiple transmission lines, and transmission abnormality for detecting abnormality of the multiple transmission lines The detection means and the integrated door opening request signal transmitted to the control panel are used as the main signal and the individual door opening request signal is used as a backup signal to control the opening and closing of the door. When There is detected, and a door-open request signal input processing means for ignoring an integrated door open request signals only during the door-opening, and provides a door-open control device for an elevator.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of an elevator door opening control device according to the present invention. A car controller 2 provided in an elevator car (not shown) and a control panel 3 provided in a machine room (not shown) are connected via a transmission line included in the tail cord 4.
The tail code 4 includes a multiplex transmission line (eg, time division multiplex transmission line) 4a and space division type transmission lines 4b, 4c, 4d.
And are included. The multiplex transmission line 4a is provided for transmitting a plurality of signals through one transmission line, and the transmission processing means 5 provided on the car controller 2 side.
Signals are transmitted and received via the transmission processing means 6 provided on the control panel 3 side.

In addition to the transmission processing means 5, the car controller 2 is provided with door opening request signal synthesizing means 12. In addition to the door opening command signal from the door opening button 7 provided on the operation panel in the elevator car, mechanical door safety 8 that operates when the tip of the door is pressed, when the optical axis stretched to the left and right of the door is blocked Phototube door safety 9 that operates, ultrasonic door safety 1 that detects obstacles near the door by reflection of ultrasonic waves
0 and each signal from each abnormality detection sensor of the overload detector 11 that detects the overload of the car are input to both the transmission processing means 5 and the door opening request signal synthesizing means 12. A plurality of signals for safety monitoring are input from the transmission processing means 5 to the door opening request signal synthesizing means 12 as described in detail with reference to FIG.

FIG. 2 is a functional block diagram of the door opening request signal synthesizing means 12. The synthesizing means 12 includes five NAND circuits 21-25 and five AND circuits 26-3.
It is composed of 0 and one OR circuit 31. The output signals of the door opening button 7, the mechanical door safety 8, the photoelectric tube door safety 9, the ultrasonic door safety 10 and the overload detector 11 in FIG.
It is input to one input terminal of each of the ND circuits 26 to 30. Other input signals are given from the control panel 3 side through the multiplex transmission line 4a. The output signals of the NAND circuits 21 to 25 are input to the other input terminals of the AND circuits 26 to 30, respectively. The five output signals of the AND circuits 26 to 30 are one signal via the OR circuit 31, that is, the integrated door opening request signal S.
Integrated into 1. The integrated door opening request signal S1 is transmitted through the transmission line 4
It is input to the door opening request signal input processing means 14 of the control panel 3 via c. A transmission normal signal that is turned on when the multiplex transmission is normal is commonly input to one of the input terminals of each of the NAND circuits 21 to 25. A door open button prohibition signal is input to the other input terminal of the NAND circuit 21, and the same applies to the NAND circuit 2
The mechanical door safety prohibition signal, the photoelectric tube door safety prohibition signal, the ultrasonic door safety prohibition signal, and the overload detection prohibition signal are input to the other input ends of 2 to 25, respectively.

As is well known, the NAND circuit outputs "0" when both inputs are "1", and outputs "1" under other input conditions. That is, the NAND circuit 21
25 are output as "0" when the transmission normal signal is "1" and each inhibition signal is "1", and AND circuits 26 to 3
Although 0 is blocked, when at least one of the transmission normal signal and each inhibition signal is "0", "1" is output and the block is released, and the door open signal and each safety monitoring signal are passed.

The control panel 3 is provided with an elevator control device, but the illustration thereof is omitted here. In addition to the transmission processing unit 6, the control panel 3 includes a door opening request signal input processing unit 14 and a driving operation processing unit 1.
5, and transmission abnormality detection means 16 are provided.

The output signal of the mechanical door safety 8 is also input to the door opening request signal input processing means 14 of the control panel 3 via the transmission path 4b. The output signals of the door opening button 7, the photoelectric tube door safety 9, the ultrasonic door safety 10, and the overload detector 11, which are individual door opening request signals, are controlled from the transmission processing means 5 of the car controller 2 via the transmission path 4a. It is sent to the transmission processing means 6 of the panel 3 and transferred from there to the door opening request signal input processing means 14. The door opening request signal input processing means 14 synthesizes the door opening signal based on each input information,
It is output to the driving operation processing means 15. The driving operation processing means 15 generates the above-mentioned individual door opening request prohibition signal and sends it to the car controller 2 via the transmission processing means 6 and the transmission path 4a. The individual door opening request prohibition signal sent to the car controller 2 is sent to the door opening request signal synthesizing means 12 via the transmission processing means 5. When there is an abnormality in the multiplex transmission line 4a, the transmission abnormality detection means 16 detects the abnormality and outputs a transmission abnormality detection signal to the door opening request signal input processing means 14. The door opening request signal input processing means 14 receives the individual door opening request signal given from the transmission processing means 6, the transmission abnormality detection signal given from the transmission abnormality detecting means 16, and the door opening request signal synthesizing means 12 via the transmission path 4c. A door opening signal S2 is generated based on the input integrated door opening request signal S1 and the output signal of the mechanical door safety 8, and the door opening signal S2 is generated via the transmission path 4d.
The detailed operation will be described with reference to FIG. The door controller 18 controls the drive of the door motor 19 to open and close the door by the door open signal S2.

FIG. 3 is a flow chart showing the operation of the door opening request signal input processing means 14. The door opening request signal input processing means 14 is closing the door when the output signal of the transmission abnormality detecting means 16 indicates that the transmission is normal (step 41 “NO”) and when the transmission is abnormal (step 41 “YES”). In the case of (step 42 "NO"), as the door opening request signal S3 to be output to the driving operation processing means 15, the integrated door opening request signal S1 transmitted via the transmission path 4c and the transmission via the transmission path 4a. The logical sum (OR) of the individual door opening request signal and the mechanical door safety signal transmitted via the transmission path 4b is calculated (step 43). This is because the integrated door opening request signal S1 is used as the main signal transmitted through the space division type transmission line 4c, and further reliability is ensured against abnormalities such as disconnection of the transmission line and contact failure related to this signal. Since it is necessary, the reliability is improved by backing up with the individual door opening request signal via the multiplex transmission path 4a. If the transmission is abnormal (step 41 "YES") and the door is open (step 42 "YES"), the transmission path 4b
Utilizing only the mechanical door safety 8 transmitted via (step 44). This is because there is a high possibility that the prohibition will not be effective for the signal synthesized by the car door opening request signal synthesizing means 12 when the transmission is abnormal. It tries to prevent people from continuing to open the door.
In particular, the aim is to prevent the situation where the photoelectric tube door safety 9 continues to malfunction due to smoke from fire.

FIG. 4 shows a modification of the embodiment shown in FIG. In this embodiment, when it is difficult for the transmission abnormality detecting means 16 to determine the transmission abnormality, the elevator is highly likely to be abnormal due to the abnormality of the signal on the multiplex transmission line 4a. Therefore, instead of step 41 of FIG. To
An elevator failure is detected (step 51), and the transmission line 4a may be active even when the elevator fails (step 51 “YES”), so the door is open (step 52 “Y”).
After the confirmation of "ES"), when the door opening request is processed, the individual door opening request is added to the mechanical door safety 8 to obtain the logical sum of the two (step 54). It is possible to reduce the number of signal lines of the tail cord while ensuring reliability and responsiveness to the signal that keeps the car door open, and also to secure reliability and safety even when there is an abnormality in the multiplex transmission line. You can

[0018]

According to the present invention, the number of signal lines of the tail cord can be reduced while ensuring the reliability and responsiveness to the signal that keeps the car door open, and the elevator is inexpensive and has a short installation time. It is possible to provide a door opening control device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a door opening control device of the present invention.

FIG. 2 is a block diagram showing a function of a door opening request signal synthesizing unit of the apparatus shown in FIG.

3 is a flowchart showing the operation of door opening request signal input processing means of the apparatus of FIG.

FIG. 4 is a flowchart showing an operation of door opening request signal input processing means in another embodiment of the door opening control device of the present invention.

[Explanation of symbols]

 2 Car controller 3 Control panel 4 Tail code 4a Multiplex transmission line 4b-4d Space division type transmission line 5,6 Transmission processing means 7 Door open button 8 Mechanical door safety 9 Photoelectric door safety 10 Ultrasonic door safety 11 Overload detector 12 Door Opening Request Signal Combining Means 14 Door Opening Request Signal Input Processing Means 15 Driving Operation Processing Means 16 Transmission Abnormality Detection Means 18 Door Controller 19 Door Motor

Claims (4)

[Claims] 1. A plurality of space division type transmission lines, which are laid between a car controller provided in a car and a control panel provided in a machine room, and are provided for each individual signal, and are common to a plurality of signals. And a tail code including at least one multiplex transmission line provided in the car, and individual output signals of the plurality of abnormality detection sensors provided in the car are combined as one individual door open request signal into one integrated door open request signal. Door opening request signal synthesizing means for transmitting to the control panel via a split type transmission path, means for transmitting the individual door opening request signal to the control panel via the multiplex transmission path, and transmission to the control panel A door opening control device for an elevator, comprising: a door opening request signal input processing means for performing door opening / closing control using the integrated door opening request signal as a main signal and the individual door opening request signal as a backup signal. 2. A plurality of space division type transmission lines, which are laid between a car controller provided in a car and a control panel provided in a machine room and provided for each individual signal, and are common to a plurality of signals. And a tail code including at least one multiplex transmission line provided in the car, and individual output signals of the plurality of abnormality detection sensors provided in the car are combined as one individual door open request signal into one integrated door open request signal. Door opening request signal synthesizing means for transmitting to the control panel via a split type transmission path, means for transmitting the individual door opening request signal to the control panel via the multiplex transmission path, and abnormality of the multiplex transmission path A transmission abnormality detecting means for detecting the door opening / closing control by using the integrated door opening request signal transmitted to the control panel as a main signal and the individual door opening request signal as a backup signal, and transmitting the transmission difference. A door opening control device for an elevator, comprising: a door opening request signal input processing means for ignoring the integrated door opening request signal only during door opening when an abnormality of the multiplex transmission line is detected by the normal detection means. 3. A driving operation processing means for generating each prohibiting signal for the individual door opening request signal and sending it to the door opening request signal synthesizing means via the multiplex transmission path. Or the door opening control device described in 2. 4. When the transmission abnormality detecting means detects an abnormality in the multiplex transmission path, the door opening request signal synthesizing processing means performs prohibiting signal processing of the individual door opening request, prohibiting each individual door opening request. 4. The elevator door opening control device according to claim 3, wherein the signal is reset.