JPS60183478A - Burglarproof device for elevator - 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 The present invention relates to a crime prevention device for an elevator, which uses a device for measuring the number of people from infrared rays emitted by human bodies according to the present invention.

According to a survey compiled by the National Police Agency regarding elevator crimes, there were 71 cases recognized or cleared in 1956 and 85 cases in 1957 involving violent crimes (robbery and rape) and forcible indecency, but there were 85 cases in 1957 involving minor mischief, etc. is expected to reach a considerable number. In fact, as a result of a survey on crime damage reported at the Architectural Institute of Japan, 68% of the respondents (380 people) in a housing complex in Kyoto Prefecture were female, according to Koyoru G (Assistant Professor Akiko Seto, Department of Housing, Nara Women's University). It has suffered some kind of damage (5B, 9.27 Asahi Shimbun). The victims of these elevator crimes are all women, and in most cases there is only one male perpetrator (there was one incident in 1956 with two victims, and most of the cases involved two people in the elevator car). ).

Next, looking at the hours of crime announced by the National Police Agency (FY 1956), 70% of the crimes occur between 6pm and 6am, and of these, 6pm to 7pm and 1am to 2am are the most common. This is said to be a dangerous period for using elevators. Furthermore, 40% of the damage occurred late at night after 10 pm, and the victims were workers in the entertainment industry and late-night restaurants.

Traditionally, the security devices for elevators include (1) reporting device (intercom), (2) forced stop device for each floor, and (3) glass window door.For residential elevators, the above (1) and (2) are required by the Building Standards Act. 1 (3) requires administrative guidance. Of these, (2) Forced stop of each floor 1 - device is 1. When this device is activated, 1 If the destination button in the car is pressed, the passenger can enter and leave the car regardless of his or her will [1] It stops on the floor one after another and moves up and down while automatically opening and closing the door. In order to ensure the safety of users when driving late at night, Kone has been switched to operating with this device at the discretion of the administrator, and in the unlikely event that a criminal attacks the victim, the victim will have an increased chance of escaping. The aim is to make it easier for criminals to touch the clothes of outsiders, preventing them from being locked away and making it harder for them to commit crimes. In the high-rise apartment complexes of the Japan Housing Corporation, a timer automatically switches to this operation late at night. However, switching to this mode of operation can be very irritating to passengers (generally late at night, there are often only one passenger and fewer people sharing a car with strangers), so it is psychologically safer to drive directly. There is also an opinion that this is the case, and since there are many cases where there is only one passenger, there are also complaints from tenants about the forced suspension of service on each floor, so many places have not switched to operating eight devices. According to an investigation by the National Police Agency, approximately 70% of the elevators involved in the damage did not have this device in operation, which is a crime prevention problem and 1. I keep pointing this out. The National Police Agency (Security Department Crime Prevention Division) has implemented the following immediate crime prevention measures: (1) At times when there are few users, especially at night, a forced stop device on each floor will be activated to automatically shut down each floor.

(2) Non? We will make sure that everyone knows how to use bells and intercoms.

(3) The door is made of wired glass so that the inside can be seen.

We recommend and provide guidance.

On the other hand, the applicant had previously published Japanese Patent Application No. 57-172379 ``Crowding Degree Detection Device'' with the aim of detecting the number of people with high precision from the infrared rays emitted by the human body with a simple and inexpensive configuration. No. 192763 proposes a "crowding degree detection device". Although detailed explanations of these will be omitted, one embodiment of the basic configuration is shown in FIG.

In FIG. 1, 11 is an optical system housing case that houses a condensing lens 2, a flat reflecting mirror 3 that rotates at a constant period, and a detection element 4 that responds to changes in the incident infrared rays; 6 is a preamplifier; 7 is a bandpass filter for removing noise components; 8 is a main amplifier; 19 is a humpator that outputs a pulse signal with an input signal of a predetermined level or higher; 1o is a preamplifier; A multiplexer circuit 11 is a counting circuit which outputs an output as a sequence of clock pulses corresponding to the pulse width of the pulse signal. In the above configuration, one field of view is set by detecting the rotational position of the plane reflector B using a disc with a slit (not shown) and a photo interrupter (not shown) installed coaxially with the plane reflector A. Using the relationship that the width of the waveform of the output signal of the detection element 4 obtained by scanning the field of view with the reflecting mirror 3 is approximately proportional to the number of people being measured, the number of clock pulses that is the output of one multiplexer 10 is counted, and the field of view is It measures the number of people in the group.

Note that FIG. 1 shows one detection element 4 and only one channel is shown, and other channels are not shown.

This congestion detection device is effective in detecting waiting passengers in elevator halls, but by installing it inside the elevator car, it can be used to detect the number of passengers in the car and the positional relationship of the passengers as described below. It is also possible to know.

The present invention has been made in view of the above points, and its purpose is to effectively utilize the forced stop device on each floor by using the congestion level detection device. The purpose is to activate the forced stop d and Z devices on each floor in case there are two passengers on board and the passengers are extremely close to each other. Also, it would be even more effective if a display was displayed in the manager's room or elevator hall at this time, or if the intercom was fully activated so that people could know what was going on inside.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 2 is a block diagram showing the configuration of the present invention. 1 Components that are the same as those in FIG. 1 are designated by the same reference numerals. In the figure, 6a is the output signal of the preamplifier B, 9a is the output signal of the amplifier 9, and 20 is a distance detection circuit that outputs a signal 20a when a passenger in the car approaches within a predetermined distance. , 3D counts the number of clock pulses that are the output of the multibutton/cusa 10, and outputs the signal 30a only when there are two passengers in the car.
The number of people detection circuit 140 that outputs is an AND game), 40a
41 is an output circuit, and 42 is a forced stop device for each floor. In addition, in Figure 2, only one channel is shown and the other channels are omitted, but below we will explain the case where it is composed of 6 channels, 1st to 3rd, and explain each channel of 16 signals. The correspondence between ``Hefeiji'' and ``Hefeiji'' is distinguished by adding lowercase letters 1 to ot at the end.

FIG. 5(a) shows the preamplifier 6 when two passengers are standing apart within the field of view of the first channel and when no one is present.
and the output signals 6a1 and 9a1 of the comparator 9, respectively, and FIG. 6(b) similarly shows the signals in the first channel when two people are standing very close to each other, when there is only one person, and when there is no person. 6a1 and 9a1 are shown respectively. From Fig. 6, the comparator output signal 9
The distance between passengers can be detected by detecting the pulse width of a□ or the interval between pulse torsions/I/s. Furthermore, if there are different channels G, it is sufficient to consider the adjacent channels 1j. Assuming that there is one person in the first channel and one person in the second channel, the preamplifier output signals 6a, 1 and 6a
2. The comparator output signals 9a, 1 and 9a2 are respectively as shown in Fig. 4(a) when two people are far apart, and as shown in Fig. 4(1) when 12 people are close to each other. ) 8 will no longer be shown. Therefore, in this case as well, the distance of the passenger can be known from the interval of pulses that are the output signals of the comparator.

Figure 5 is a block diagram showing the details of this distance detection circuit.
In the figure, -9a, 1 to 9a3 are the first channels, respectively.
Output signals of the comparators of the second channel, 21 and 2
7 is an AND gate, -22 is a first channel distance comparison circuit consisting of a monostable multivibrator 23, a delay circuit 24, and an AND gate 25; similarly, 26 and 28 are second and sixth channel distance comparison circuits, respectively; 29 is an OR gate. The distance comparison circuit 22 outputs "G" when a person is present in the first channel.

This will be explained with reference to FIG. FIG. 6(a) is a diagram showing the signal waveforms of each part of the distance comparison circuit 22 in the state of FIG. 3(a), where 23a is the output signal of the monostable multivibrator 2, and 24a is the delay circuit 24. The output signal 125a of (delay time τ) is the output signal of the AND gate 25. The AND gate 25 connects the signal 9a1 and the signal A of the signal 24a.
Since the pulse interval of one signal 9al is 1 or more than a predetermined value determined by time T and τ, that is, the distance between people is more than 1-1, the signal 25a is not output. -, where \time T +jl, i
It can be set arbitrarily by appropriately selecting the values of the external resistor (not shown) and capacitor (not shown) of the stable multivibrator, and approximately T = 0.5 i;~t (however, 15 is a signal for one person) 9a1 width), delay time τ
-1 or 2 T is appropriate.

FIG. 5(b) is a diagram showing waveforms of various parts of the distance comparison circuit 22 corresponding to the state of FIG. 6(b). When two people are lined up very close together, the width of signal 9a1 is approximately twice as wide as when there is only one person, so in this case, signal 25a is
will be output. Similarly, in the second channel and the sixth channel, when a person is present in close proximity, a signal is outputted by the distance comparison circuit 26 or 28.

Also, as shown in Figure 1, when there are people in close proximity to other channels, % A, ND gate 21
Alternatively, the signal will be outputted by 27. Therefore, the distance detection circuit 20 outputs a signal 20a when a passenger is present in the elevator car. Note that the distance detection circuit 20 outputs the signal 20a not only when there are two people but also when there are people with a distance of 6 Å or more in close proximity, but the signal 30a is output only when there are two passengers in the car. Therefore, by passing through the AND gate 40, the output 40a is generated only when there are two passengers in the car. In addition,
It is detailed in the above-mentioned earlier application that the output of the multiplexer 10 is a train of clock pulses corresponding to the number of people in the field of view, and based on this number of pulses, the signal 30a is output only when there are two passengers in the car. Since the number of people detection circuit that outputs the number of people can be easily realized by a counting circuit, the explanation thereof will be omitted. The output 40a is inputted to each floor forced stop circuit 42 via an output circuit 41, and the elevator is stopped at each floor. Also, at this time, it would be even better if the intercom switch was turned on at the same time so that the conversation inside the car could be heard, and the elevator hall and manager's room were notified that this device was working and security operation was being carried out. Effective.

Furthermore, the forced stop device on each floor can be easily set to operate only during predetermined hours when crimes are likely to occur, using a one-time clock device.

As described above, according to the present invention, the operation is switched to stop operation on each floor only when two passengers in the car approach each other by a predetermined distance or more, so if there is only one passenger, direct operation can actually ensure safety. Therefore, it is possible to provide an effective crime prevention device that can eliminate user dissatisfaction with the forced stop device on each floor.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the configuration of a conventional congestion level detection device - Fig. 2 is a diagram showing the configuration of the present invention, and Figs. 6 and 4 explain the relationship between passengers in the car and output signal waveforms. FIG. 1 is a block diagram showing details of the distance detection circuit, and FIG. 6 is a diagram explaining the operation of the distance comparison circuit. Ro1. Plane reflector 41. Detection element 60. Preamplifier 71. Bandpass filter 80. Main amplifier 90. Comparator 109. Multiplexer circuit 209. Distance detection circuit 6019 Number of people detection circuit 40,,
AND gate 410. Output circuit 420. Patent applicant for forced stop device on each floor Fujichik Co., Ltd. Fig. 1 Fig. 71 ta> Ji 3 Fig. (θ) 6θ1 (10) Section 4 Fig. 5 (lo)

Claims (1)

[Claims] A detection element that responds to changes in incident infrared rays, a scanning mirror that rotates at a constant cycle and scans the inside of the elevator car 1. Detects that there are two passengers in the car from the waveform of the output signal of the detection element. a number of people detection circuit; a distance detection circuit that detects from the waveform of the output signal of the detection element that passengers in the car have approached by a predetermined distance or more;
A crime prevention device for an elevator, comprising a forced stop device for each floor, which causes the elevator to stop operating at each floor when a person approaches the elevator by a predetermined distance or more.