JPS6330272B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for preventing crime in an elevator.

Recently, crimes committed inside elevator cars have been occurring frequently and have become a social problem. There are many causes for these crimes, the first of which is the lack of suitable detectors to detect crimes. In other words, the reason why crimes are committed in elevator cars is that even though elevators are public vehicles, they are closed rooms and crimes are difficult to detect by third parties.

Therefore, recently, it has been considered to detect that the behavior of the passengers in the car is different from normal, and to activate an alarm device or stop the car at the nearest floor. As this detector, for example, a portable detector having a push button is used, and it is configured so that it can be stored in a passenger's clothing pocket or the like and easily activated by pressing the push button from above the passenger's clothing. There is. If a passenger is attacked by a thug in the car, if the passenger presses the push button with his hand over his clothes or by pressing his body against the side wall of the car, an abnormal signal will be sent and the alarm system will be activated. or stop the car at the nearest floor. This helps in reporting the crime to the building manager without the culprit noticing and giving the culprit an opportunity to be caught red-handed. It also becomes possible to escape from the hands of the criminal at an early stage.

However, when using a detector such as the one described above, it is possible that an abnormality may be detected by mistake. For example, if a detector is used that has a push button or is activated by pressure when a passenger presses his or her body against the side wall of the car, if the passenger moves his or her body unconsciously, his or her hand or baggage may accidentally come into contact with the sensor. If this occurs, the detector may be activated and an abnormal signal may be generated. In addition, if a detector is used that detects the capacitance of a passenger when another person approaches or comes in contact with the passenger, the detector will detect when the passenger passes another passenger when getting on or off the train. may operate and generate an abnormal signal. Due to such malfunction,
If the alarm system is activated or the car stops at the nearest floor, it will cause inconvenience to the manager and other passengers.

This invention is intended to improve the above-mentioned problem, and by making it possible to erroneously judge passenger behavior as abnormal by emitting an abnormal signal when the detector operates continuously for a predetermined period of time or longer or intermittently operates for a certain period of time. The purpose of the present invention is to provide a crime prevention device for an elevator that prevents theft from occurring.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In the figure, 1 is a portable detector that a passenger in the car carries in his or her clothes pocket and easily closes by pressing it from above his clothes. 2 is a portable detector that responds when detector 1 closes. a transmitter that emits a signal, 2
A is a switch connected to detector 1, 2B is a power supply connected to switch 2A, 2C is an oscillator operated by power supply 2B, 2D is an amplifier that amplifies the signal of oscillator 2C, and 2E is an air propagation signal of amplifier 2E. A transmitting antenna that converts into a signal 2a, 3 a receiver installed on the cage, 3A an air propagation signal 2a
(The receiving antenna 3A is installed on the ceiling of the car room so that it can easily receive the airborne signal 2a), 3B is an amplifier that amplifies the signal of the receiving antenna 3A, and 3C is the signal from the transmitter 2 from the amplifier 3B. When the output signal 3a is detected, the output signal 3a becomes “H”.
4 is a reset button installed in the control room, 4a is its signal, 5 is a constant value signal representing a predetermined time T (for example, 2 seconds), 6 is an abnormal signal output device, and 6a is its output. Abnormal signal, 6A is
NOT gate, 6B is a timer that counts and outputs the time while input I is "H", and its contents are reset to zero when input R becomes "H", 6C is input X
A comparator whose output is "H" only when the input is Y,
6D is an R-S flip-flop (hereinafter referred to as memory), 7 is an alarm device such as a bell or buzzer that is installed in the control room and activated by the abnormal signal 6a, and 8 is an elevator operation that operates by the abnormal signal 6a and stops the car at the nearest floor. 10a and 10b are abnormality detection relay contacts that close when the abnormality signal 6a becomes "H"; 11 to 15 are car position contacts that close when the car enters a predetermined upper and lower range from the 1st floor to the 5th floor, respectively; 21
~25 is a call registration relay contact that closes when a call for the 1st to 5th floors is registered, and 26 is a stop decision relay that closes instantaneously when the car reaches a point a distance corresponding to the deceleration distance from the floor where the car is scheduled to stop. Contacts 27 are travel relay contacts that close while the car is running; 28 is a stop command relay that decelerates and stops the car when energized; 28a and 28b are normally open contacts; 29 is a relay contact that closes when the car is running; 30 is a door opening time setting time relay contact that closes when the car is running and opens when a certain period of time (for example, 4 seconds) has elapsed since the car stopped and the door opened; 31 is a door opening relay that opens the door when energized.
31a is its normally open contact, and (+) and (-) are DC power supplies.

Next, the operation of this embodiment will be explained.

The switch 2A is always closed, but the detector 1 is never pressed, so the signal 3a is "L".
, the output of NOT gate 6A becomes "H",
The contents of timer 6B have been reset to zero. Therefore, the output of the comparator 6C becomes "L", the memory 6D is not set, and the abnormal signal 6a becomes "L".
It remains as it is.

If the car is currently running in response to a call from the third floor, the call registration relay contact 23, travel relay contact 27, and door opening time setting time relay contact 30 for the third floor are closed. When the car reaches the third floor, the third floor car position contact 13 closes, and the stop decision relay contact 26 closes instantaneously. Now (+)−
The stop command relay 28 is energized by the circuit 13-23-26-28-(-) and self-holds by closing the contact 28a. Further, the contact 28b is also closed. When the car enters the door-openable section on the third floor, the door-openable section detection switch 29 closes, and the (+)-28b
The door opening relay 31 is energized by the circuit -29-31-(-), and self-holds by closing the contact 31a. The door begins to open when the door opening relay 31 is energized. When the car stops, the running relay 27 is opened, so the stop command relay 28 is deenergized, and the contact 2
8a and 28b are open. 4 seconds after the door is fully opened, the time relay contact 30 opens, so
The door opening relay 31 is deenergized. This will energize the door opening relay (not shown) and the door will begin to close, but the details will be omitted. The above is normal operation.

Next, suppose a passenger is attacked by a thug inside the car.
The passenger can activate the detector 1 by pushing with his hand over his clothes or by pressing his body against the side wall of the car. Such behavior is extremely natural and does not make the criminal aware that the detector 1 has been pressed.

In this way, when the detector 1 is pressed, the oscillator 2C operates, and its signal passes through the amplifier 2D and the transmitting antenna 2E, and an air propagation signal 2a is emitted. This is received by the receiving antenna 3A, and the signal 3 is transmitted through the amplifier 3B and the detector 3C.
a becomes "H". The time that this signal 3a is at "H" is counted by the timer 6B, and when the duration time _t2 exceeds the predetermined time T, the comparator 6C
The output becomes "H", the memory 6D is set, and its output, the abnormal signal 6a, becomes "H" as shown in FIG. The alarm device 7 then operates and notifies the manager that the passenger has committed a crime. Further, the abnormality detection relay contacts 10a and 10b are closed. By closing the contact 10a, when the car reaches a point before the nearest floor by a distance corresponding to the deceleration distance and the stop decision relay contact 26 closes, (+)
-10a-26-28-(-) circuit energizes the stop command relay 28, and the car stops at the nearest floor. When the car enters the area where the door can be opened on the nearest floor,
As described above, the door opening relay 31 is energized and (+)-
The circuit 31a-10b-31-(-) holds the door open. When 4 seconds have elapsed after the door is fully opened, the time relay contact 30 opens, but since the contact 10b is closed, the door opening relay 31 is held and the door continues to open. This gives the passenger an opportunity to escape from inside the car. Afterwards, when the reset button 4 is pressed, the signal 4a becomes "H" and the memory 6D
is reset, and the abnormal signal 6a becomes "L".
As a result, abnormality detection relay contacts 10a, 10b
is open. Opening of contact 10b deenergizes door opening relay 31 and closes the door as described above. Thereafter, the elevator operating device 8 returns to its normal state.

Now, a passenger carrying detector 1 accidentally accidentally
Assume that the detector 1 is activated for about a second. The duration time t ₁ (0.5 seconds) of the signal 3a at this time is counted by the timer 6B, but since it is shorter than the predetermined time T (2 seconds), the output of the comparator 6C remains "L". ,
Memory 6D is not reset and no abnormality is detected as shown in FIG.

In this way, the output of the detector 1 is maintained for a predetermined time T
Since the abnormality signal 6a does not become "H" unless the above-mentioned malfunctions occur continuously, it is possible to prevent the malfunction from being judged as abnormal and causing trouble to the manager or other passengers.

FIGS. 5 and 6 show other embodiments of the invention.

In the figure, 6E is a pulse counter that counts the contents one by one when the input I changes from "L" to "H" and resets the contents to zero when the input R changes to "H".
F is a comparator similar to comparator 6C, 33 is a fixed time
A constant value signal 34 represents a constant value N (for example _, 3 times). Other than the above, it is the same as in FIGS. 1 to 4.

Since detector 1 is not pressed at all times, signal 3a remains "L" and NOT gate 6A
Since the output of timer 6B is "H", the output of timer 6B is an extremely large value. Therefore, the output of the comparator 6C becomes "H", the contents of the pulse counter 6E has been reset to zero, the output of the comparator 6F becomes "L", the memory 6D is not set, and the abnormal signal 6a is It is marked "L".

Next, as shown in _FIG .
If it becomes "H" continuously at intervals of t ₃ , signal 3a
When the signal changes from "L" to "H", the contents of the timer 6B are reset to zero, so the output of the comparator 6C becomes "L". Therefore, the contents of the pulse counter 6E are added from zero to one. However, since it is still smaller than the constant value signal value N (3 times),
The output of the comparator 6F remains at "L". next,
When signal 3a changes from "H" to "L", the
Since the output of the NOT gate 6A becomes "H", the duration time _t1 is counted by the timer 6B. Passage time t ₁
<During certain time T1 (output of comparator 6C is “L”)
Then, when the signal 3a changes from "L" to "H" again,
Although the contents of the pulse counter 6E are added from 1 to 2, the output of the comparator 6F still remains at "L". When the signal 3a changes from "H" to "L" again, the timer 6B counts the duration _t2 , but the signal 3a repeats during the duration _t2 < constant time T1.
When a goes from "L" to "H", the contents of the pulse counter 6E are incremented from 2 to 3. Now, the output of the comparator becomes "H", the memory 6D is set, and the abnormal signal 6a becomes "H". If the duration _t2 is longer than the certain time T1, the comparator 6
Since the output of C becomes "H", the pulse counter 6
The contents of E are reset to zero, and no abnormality is detected after all.

In this way, the output of detector 1 becomes T1 for a short time
Since the abnormality signal 6a does not become "H" unless the abnormality signal 6a continues N times or more at shorter intervals, it is possible to reduce the number of erroneous determinations of abnormality.

Note that a case where the signal 3a continues for a certain period of time may be detected as an abnormality.

In each of the above embodiments, constant value signals 5, 33, 34
The values of were set to 2 seconds, 3 seconds, and 3 times, respectively, but
It is not limited to this, but it is desirable to set it according to the number of floors of the building, the type of detector 1, etc.

In addition to detecting abnormalities within the car,
It is also possible to install the receiver 3 at the landing to expand the effective range of abnormality detection.

Furthermore, since the detector 1 is portable, it can be said to be desirable in that the passenger can operate it without being noticed by the criminal. However, it is clear that the detector 1 is not necessarily limited to portable use, and can also be applied when installed inside a car or at a landing.

As explained above, in this invention, a portable detector is provided which is activated by the behavior of the passenger, and in response to this detector, an air propagation signal is emitted, which is received at the car or landing. Since the system is designed to issue an abnormality signal when the system operates for more than a predetermined time or continues to operate for a certain period of time, it reduces the possibility of erroneously detecting the passenger's unconscious behavior as an abnormality, creating an easy-to-use crime prevention device. can do.

Furthermore, it is possible to construct a detector that can be used by passengers regardless of their position and can be operated without being noticed by the criminal.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing one embodiment of an elevator security device according to the present invention, and FIG.
3 is a block circuit diagram of the abnormal signal output device shown in the figure, FIG. 3 is an output waveform diagram of each part of FIG. 2, FIG. 4 is a circuit diagram of the elevator operating device of FIG. 1, and FIG. 5 is another embodiment of the present invention. FIG. 6 is a block circuit diagram of an example abnormal signal output device, and FIG. 6 is an output waveform diagram of each part of FIG. 5. In the figure, 1...detector, 2...transmitter, 2
a...Air propagation signal, 3...Receiver, 6...Abnormal signal output device, 6a...Abnormal signal, 7...Alarm device, 8...Elevator operating device, 33...Constant value (time) signal, 34... Constant value (number of times) signal. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1. A detector carried by a passenger and activated by the passenger's behavior, a transmitter that emits an airborne signal in response to the output of this detector, a receiver installed in a car or landing that receives the airborne signal, and this reception. an abnormal signal output device that emits an abnormal signal when the output of the device is emitted continuously for a predetermined period of time or more or intermittently within a certain period of time; and a crime prevention control device that is activated by the abnormal signal. Elevator security device.