JPS58113087A - 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 device for preventing crimes using elevators.

Conventionally, there has been no appropriate means for preventing criminal acts such as violence inside an elevator car, and the only thing that has been done is to simply provide an emergency button inside the car. However, in such cases, it is not always possible for the victim to press the emergency button, and this has not been sufficient to prevent such violent acts.

By the way, the movement of passengers in an elevator car is normally slow, but in the event of an abnormal act of violence, the movement of passengers becomes sudden.Recently, many applicants have developed a device that prevents crime by detecting this movement. I applied for the application.

That-.

As a second example, for example, Japanese Patent Application No. 55-1785241 "Elevator Car Abnormality Detection Device" and Japanese Patent Application No. 56-10997
J-Situation Detection Device", etc. That is, these detect changes in the spatial distribution of brightness using a spatial filter or the principle of a spatial filter, and when the degree of change exceeds a predetermined value, it is considered that an abnormality has occurred, and the elevator is stopped at the nearest floor. This system is designed to ensure the safety of passengers by issuing warnings. However, these systems convert the luminance spatial distribution into an electrical signal, and if the frequency or amplitude level of this electrical signal exceeds a predetermined value, it is considered that an abnormality has occurred, so it is possible to detect various abnormalities within the cage. Therefore, it is not possible to determine whether an abnormality is abnormal or not, and as a result, the alarm system may sound even when there is no need to sound, causing the building manager or resident to There is a risk of causing inconvenience to others. From a crime prevention perspective, too much sounding of the alarm system has a negative effect.

Furthermore, recently, intelligent crimes have been increasing day by day, such as people with criminal intentions boarding the Gagoshichi elevator, freely operating the elevator, and attempting to steal cash while it is being transported. It is no longer possible to prevent crimes simply by detecting abnormalities within elevator cars.

The present invention has been developed in view of these points, and it determines changes in the brightness spatial distribution in more detail to determine the type and degree of abnormality in the car, selects the most appropriate treatment accordingly, and provides caution to passengers. The purpose of the present invention is to provide a device that prevents the occurrence of crimes by quickly alerting people and alerting those who intend to commit crimes.

The present invention will be explained below with reference to the drawings.

1 and 2 are block diagrams showing one embodiment of the present invention. In the figure, 1 is a device for detecting the spatial distribution of luminance within an elevator car, and 1a is its output signal. The device 1 for detecting this brightness spatial distribution is, for example, a wide solid angle prism 2.
It is composed of a 6° lens, a photoelectric element 4, etc., but the details thereof are explained in the above-mentioned Japanese Patent Application No. 55-178524, etc., so the explanation will be omitted here.

Reference numeral 5 designates an AC amplifier, from which the DC component is removed from the output signal 5a, and when an object moves within the field of view of the wide solid angle prism 2, a signal corresponding to the movement is obtained.

Reference numeral 6 denotes a DC amplifier, and the output signal 6a thereof is a voltage corresponding to the illuminance within the field of view of the wide solid angle prism 2. 7 is a bandpass filter that removes unnecessary signal components, and 8 is a sensitivity compensator IE that changes the degree of amplification according to the signal 6a depending on the illuminance and keeps the output signal 8a substantially constant regardless of changes in the illuminance.

Reference numeral 9 indicates an abnormality determination device that detects the type and degree of abnormality in the car using a signal 8a and outputs a corresponding signal; 10 indicates a signal 8;
The signal 8a is used to detect the frequency, amplitude, rate of change, etc. of a.
This is a feature detector that outputs as a feature signal 10a, and consists of a comparator, a differentiating circuit, and a waveform shaper. Reference numeral 11 denotes a motion discriminator that determines the degree of movement of people or objects in the car based on the characteristic signal 10a, and outputs a signal 11a if the movement is slight, a signal 11b if the movement is moderate, and a signal 11c if it is large. do. Still moving! One-time discrimination can be easily performed by detecting the frequency of the feature signal 10a. 12 is a knife discriminator that detects a knife from the characteristic signal 10a;
If the duration of the knife detection signal is short, a signal 12a is output, and if the duration is long, a signal 12b is output. Is 13 an output signal when the elevator stops outside the floor door opening zone?
14 is a door open detection device that emits an output signal 14a when the elevator car door is opened; 15 is an emergency door open detection device that emits an output signal 15a when the emergency exit on the elevator car is opened. device, 21-2
4 is an OR gate, 25.26 is an AND gate,
27 is a car top bell, 28 is a landing bell, 29 is a notification device to the manager's room, 3o is a notification device that activates a well-known automatic dialing device (not shown) and reports to the police station, and 31 is the nearest notification device. This is the nearest floor stopping device that stops the car at the floor and opens the car door.

The operation of the apparatus of the present invention will be explained below.

First, if a person intending to commit a crime enters the elevator just before the elevator doors close and commits a violent act against the passengers inside the elevator car, if a violent act is about to occur inside the elevator car, the person inside the elevator car may commit a violent act. The output signal 1a from the device 1 for detecting luminance spatial distribution has a waveform different from that in normal times, and this is the waveform of the output signal 1a from the device 1 for detecting the luminance spatial distribution. Unnecessary noise components are removed via a bandpass filter 7 and a sensitivity corrector 8, and the signal is input to an abnormality determination device 9 as a signal 8a.

In the abnormality determination device 9, a feature detector 1o receives an input signal 8a.
is converted into a pulse signal corresponding to its frequency and amplitude as a characteristic signal 10a, and the signal is output.Discriminators 11 and 12 determine the type and degree of abnormality in the car and output a signal corresponding to the type and degree of abnormality.

Depending on the type and degree of the abnormality, the selection circuit selects the most appropriate treatment to ensure the safety of passengers. For example, when a person or a part of the human body moves faster than normal in the car, it is detected by the discriminator 11 in the abnormality discriminator, and when the movement is slight, fg number i1a is output and the OR gate 21
The elevator car is actuated via the OR gate 24, and the nearest floor stopping device 31 is actuated via the OR gate 24 to stop the elevator car at the nearest floor.

Therefore, if the discriminator 11 is activated due to a criminal act, the passenger should be able to escape from the car while the criminal is startled by the sound of the buzzer.

However, if the movement is minor, it does not necessarily mean that an act of violence has occurred, so we will limit ourselves to the measures described above.

Next, if the movement is moderate, there is a strong possibility that a violent act has occurred, so the discriminator 11 outputs the signal 11b and outputs the signal 11b.
Via the R gate 22, the notification system rh to the hall 7 bell 28 and the manager's room is activated, and the volume of the car bell 27 is increased.

If the movement is even more intense, a serious abnormal situation may occur, so the discriminator 11 outputs a signal 11c and activates the reporting device 60 to the police station via the OR gate 26.
Report to luxury.

In the event that a knife or metal piece is taken out of the basket for a predetermined period of time or longer, it will be detected by the knife discriminator 12 regardless of the presence or absence of the output signal of the discriminator 11, and by emitting the signal 12b, it will be removed from the basket simultaneously. Bell 27, Hall bell 28. The notification device 29 to the manager's room and the notification device 30 to the police station are activated, and the nearest floor stopping device 31 causes the elevator car to stop at the nearest floor.

FIG. 3 is a block diagram showing details of one embodiment of the knife discriminator 12. Detection of a knife detects a sudden increase in light intensity due to uneven light reflection. In Figure 6, 4
1 is a frequency detection circuit which outputs a signal 41a if the signal 10a has a frequency equal to or higher than a predetermined value. 45 and 46 are level comparators, and the level of 45 is set higher than that of 46. 45a is an inverter, 47 is A
is an ND gate, so its output 47a is the signal 10a
It is emitted when the signal is within a certain level range. 48 is AN
It is a D gate, and its output 12a is emitted if the frequency of the signal 10a is above a predetermined value and within a certain level range.

If the range of this level is selected appropriately, it will be possible to distinguish it from the movement of a person and to detect that a knife has been taken out. A differential comparator 42 rectifies and differentiates the signal 10a (differentiation of the envelope of the signal wave layer), and outputs a signal 42a when the differential value of the waveform exceeds a certain level. 46 is a time comparator. For example, when the comparator is set to 5 seconds, a signal 43a is output when the duration of the signal 10a reaches 5 seconds. 4
9 is an AND gate. Therefore, when it is detected that a cutlery has been removed from the basket, a signal 12a is output, and if this state continues for a predetermined period of time or more, a signal 12b is output.

Next, we will discuss a case where a person intending to commit a crime gets on top of a car, operates an elevator, and commits a criminal act.

First, a person who intends to commit a crime attempts to enter the car by opening the car door or the emergency [■] of the car, but when the car stops outside the level, the car stops outside the level. The outside detection device 13 emits a signal 138L, which activates the car bell 27 via the OR gate 21, which causes the passengers in the car to be on guard and stops those who intend to commit a crime. It has a psychological effect on people. However, if the criminal tries to open the car door further and enter the car, the door open detection device 14 is activated and issues a signal 14a, which sends a notification to the hall bell 28 and the manager via the AND gate 25 and OR gate 22. 2
9 is activated, and the volume of the car bell 27 is increased. In addition, if the criminal attempts to open the emergency exit and enter the car, the emergency door open detection device 15 is activated and the signal 1 is activated.
5a, the hall bell 28 and the manager notification device 29 are activated via the OR gate 22 in the same manner as described above, and the volume of the car h bell 27 is increased. Furthermore, if the criminal enters the car and takes out a knife even momentarily and threatens the passengers, the AND Gate 26 and O
A notification device w30 to the police station is activated via the R gate 23 to request dispatch of the authorities.

By the way, when an elevator stops outside the level, it is not only due to a criminal act, but also due to a power outage or a malfunction of the control device.
2 will not be emitted unless activated, so unnecessary confusion can be avoided.0 Also, when the car is stopped outside the level due to a stoppage, etc., passengers may open the car door and try to escape with their own knife. If you do so, the volume of the bell on the car will increase, which will alert you.

As described above, according to the present invention, it is possible to prevent all kinds of crimes using elevators. It is also effective in preventing fall accidents.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing one embodiment of the elevator security device according to the present invention, and FIG. 3 is a block diagram showing one embodiment of the knife discriminator. Device 51 for detecting luminance spatial distribution. AC amplifier 61. DC amplifier 98. Abnormality determination device 111. Motion discriminator 120. Knife discriminator
131. Level valley detection device 1410 Door open detection device 150. Emergency door opening detection device 271. Car top bell 2810 Hall bell 290. Notification device 300 to the manager's room. Police station reporting device 310. Nearest Floor Stopping Device Patent Applicant: Fujichik Co., Ltd. No. 11, No. 7 Figure 8'2) Item 2 L----------------------1

Claims (1)

[Claims] A device a that detects the spatial distribution of brightness within the car and outputs a signal corresponding to the spatial distribution of brightness; An abnormality determination device that determines the degree of abnormality, a detection device that detects that the elevator car has stopped outside the level, a detection device that detects that an emergency door, etc. is opened, and an alarm device are provided,
A crime prevention device for an elevator, comprising a circuit that selects the most appropriate treatment depending on the form of crime based on a combination of the output of the abnormality determination device and the output of the detection device.