JPS58500039A - Method and device for detecting objects in the path of a closing sliding door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Inspection equipment Technical field The present invention is based on the object being located at a predetermined location, especially at a location such as an elevator entrance. The present invention relates to a device for detecting.

Background technology Elevators usually have seven or more sliding doors that open and close automatically. Ru. Therefore, immediately before or during the automatic closing of the sliding door, there should be no obstruction between the sliding doors. In other words, the device is controlled using a device that detects the presence of a passenger. If the door does not close any further, try opening the door again. is normal.

Such a device shines a beam of light across the path across the opening of the sliding door and uses a separator to create an obstruction. It is designed to detect the interruption of the light beam that occurs when a harmful object is between the sliding doors. next When it detects a blockage, it sends a signal to the control mechanism of the self-sliding door to shut down the sliding door normally. change the function of the sliding door, preferably re-opening the sliding door.

Typically, such devices have a line of light sources on one side of the doorway, with a height Provide different parallel beams of light and expose a corresponding line of light to the other entrance and exit. A sex detector is placed to detect these rays and thus detect the strangeness in the darkness of the sliding door. The stem is configured such that it can detect objects of interest. maximum sensitivity In order to obtain It is designed to respond to the source.

This device is generally satisfactory, but because the beams are separated from each other, It has the disadvantage that objects between the beams are not detected. For example, A stretched arm cannot be detected.

Of course, for example, by further reducing the distance between parallel rays, there is essentially no break. Sensitivity can be improved by providing light. However, the equipment is It is expensive to increase the temperature and maintain sensitivity, and light deviated from one sensor may be transmitted to an adjacent sensor. This prevents light from reaching the wrong sensor and not reaching the correct sensor. The rays must be highly parallel in order to stop. The large number required for this Of course, the photodetector and the optical system for collimating the light beams are extremely expensive. will be added.

A mirror is used to stretch the path length of the light ray from the light source to reach the photodetector The light beam can be made to cross the sliding door opening many times before. however , this can reduce the number of photodetectors needed, but each detector The intensity of the light rays arriving at the do.

Parallel beams spaced in a row are therefore the best in terms of safety, efficiency, and cost. It has been widely accepted as a compromise solution.

Disclosure of invention A device for detecting objects at an entrance/exit of an elevator according to the present invention is separated from each other. a plurality of emitters placed and capable of emitting radiation; each emitter having one emitter; a plurality of sensors that emit signals in response to radiation received from the emitter; The sensors are spaced apart from each other and along a path extending between each sensor and each emitter. are spaced apart from each emitter; and a device for activating said sensor in response to the optionally activated emitter. a device for detecting a signal emitted by any of said emitters; any one of the beams extending between any one of the sensors and one of said sensors; Obstacles appearing during said sequence can be detected.

Brief description of the drawing FIG. 1 shows the emitter of the present invention mounted on the pulley of an adjacent cooperating elevator. FIG. 2 is a schematic diagram showing the arrangement of cells.

FIG. 2 shows the arrangement of FIG. 1 when the sliding doors are close together.

Figures 3, 4 and S show alternative arrangements of the sensor and emitter of the present invention. Ru.

BEST MODE FOR CARRYING OUT THE INVENTION 1 and 2 show the first elevator door 10 and the first elevator door 10. has been done. These doors are shown open in FIG. When the door 10 is closed, the closing edge 11 of the door 10 contacts the closing edge 21 of the door 20. touch

A plurality of elements consisting of emitters 12 and 22 and sensors 13 and 23 are closed. Chain edge 11.21 defines the VC first and second sequences.

The first array includes emitters 12 spaced apart from each other along the edge 11; It is composed of a processor 13 at the top and bottom.

The second arrangement of adjacent closing edges 21 (on door 20) It is composed of an emitter 22 and a sensor 23.

The emitter may be an incandescent lamp, an LED device or any suitable radiation generating device. For example, the emitted radiation can be distinguished from the surrounding background radiation. It can be a tuned infrared emitter.

Similarly, se/sum is sensitive to radiation from the emitter and sensitive to radiation from sources other than the emitter. Any suitable device may be used that is not sensitive to the Therefore, as a center Photodiodes, phototransistors, etc. can be used, and these increase the sensitivity. You may also add a dart synchronized with the emitter adjusted for this purpose.

When using a light source and detector as a pair, it is necessary to make the light parallel to improve sensitivity. Unlike previous methods where the radiation from this emitter is parallel to Not yet. Therefore, each cell actually has one sensor and one emitter as shown in Figure 1. It will be exposed to radiation from a plurality of e-spaces extending between the two.

Figures 1 and 2 show multiple gases extending between the emitter and the sensor. has been done. Each gusu has an alphabet indicating ce/su and an emoticon at the end of the zosu. They are distinguished by a number indicating the data. As is clear from Figure 2, these parameters intersect and form an i-twork in the space between the closing edges 11 and 21 of the door. However, the space between these 74' spaces is smaller than that of conventional devices.

When the circuit is set up and each emitter is activated, it emits radiation in the first order, and each sensor The seven sensors are monitored in order, and whenever the seven 'x' transmitters are activated, are now being monitored. For example, if each emitter 12 operates sequentially, Then, one of the sensors 23 is monitored. Then the emitters 22 are When activated, one of the processors 13 is monitored. Then emitter 12 is When each operates continuously again, the other sensor (sensor 23) is monitored. Ru. Then, when the emitter 22 is activated again in succession, the other sensor (co-sensor 13) ) are monitored. The exact order is not important, but the preferred basic operations For each emitter-sensor combination, the /' The robots are operated and monitored repeatedly in 7 seconds in a certain order.

Each pass is thus monitored for obstacles in the overall order. Ma The sensor that was installed does not receive radiation from other emitters and the other emitters are not activated. For this reason, sensors are extremely sensitive to obstacles. Each gas is connected to the sensor and emitter. Since it consists of a single combination, the sensitivity of the sensor must be adjusted to maximize the sensitivity. It can be adjusted in synchronization with the operation of the transmitter. For example, the signal from sensor 13 The gain of the receiving amplifier is increased by one emitter 22 than when operating A6. It can be high when the other emitter 22 is activating path C7.

FIG. 2 will be explained. FIG. 2 shows the embodiment of FIG. 1, but with the door When the doors are close together, the luminous flux density in the space increases. It is clear that it will add.

The present invention in its simplest form is as shown in FIGS. 3, 4 and S. Contains Mr. Furthermore, emitters can be obtained at a lower cost than sessa. It will be appreciated by those skilled in the art that many geometric arrangements are possible within the scope of the present invention. This is probably something that would be recognized.

Create a signal such that only one sensor/emitter combination is active at any time. It is desirable to release it. However, the sensor and emitter combination must operate simultaneously. You can also choose. e.g. emitter on one edge and sensor on the other edge at the same time. It is also possible to activate the sensor on one edge and the emitter on the other edge. can.

The circuitry necessary to make embodiments of the invention can vary widely as will be apparent to those skilled in the art from the above description. techniques can be used.

Additionally, embodiments of the present invention not only monitor elevator entrances and exits, but also monitor certain parts of the elevator. As a safety device that monitors the In order to detect that a person is getting on and off the vehicle properly or that a person is getting on and off the vehicle properly , or relatedly, to detect the presence of an object at a predetermined location. It can be used for different purposes such as

Various modifications are made to the above embodiments of the present invention within the scope of the present invention. This is obvious to those skilled in the art.

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Claims (1)

[Claims] / In a device for detecting an object in a passage, at least one edge of the passage a plurality of radiation emitters spaced apart along and capable of emitting radiation; at the edge of the passageway opposite the one edge and responsive to radiation from each emitter; at least seven radiation cells providing an output signal corresponding to the output signal. a first device for activating each emitter in a predetermined order; in response to activation of said first device; It is assumed that there is an object within the space between the above-mentioned emitter and each space. activating a particular emitter by applying a detection signal indicating The above-mentioned device is characterized in that it is provided with a third device for providing an output signal of no output signal. Place. λ sensors at said opposite edge of the passage. providing said detection signal in response to actuation of a particular emitter and of said two sensors; said first device comprising a device to indicate the absence of an output signal from one side; The apparatus according to claim 1. 3. The emitters are arranged at both edges of the passage; two or more of the emitters are arranged in the front. At each edge of the passageway; The first device is responsive to actuation of a predetermined emitter at one edge of the passageway. of the Ω sensors on the opposite edge of the passageway giving a far signal and in Qr fixed order. Claim 1 comprising means for providing that there is no output signal from each. equipment. q At each edge, put a first setter on the top, a second setter on the bottom of the edge, Claim 3: A plurality of emitters are provided between the first sensor and the first user sensor. The equipment described in section.