JPH0321474B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator control operation device that gives commands to a control operation device provided to prevent damage caused by earthquakes and strong winds.

[Conventional technology]

2. Description of the Related Art Acceleration type earthquake sensors are known as conventional vibration sensing devices for controlled operations that issue commands to controlled operating devices during earthquakes and strong winds. This acceleration type seismic sensor was used in a patent application filed in 1983 because it often malfunctions, especially when used in elevators for skyscrapers.
A wave energy seismic sensor was proposed in No. 49259.

High-grade earthquake detectors such as wave energy type earthquake detectors are used in elevators in skyscrapers. For example, in the event of a large earthquake, they can appropriately judge the situation and issue commands to the control operation equipment to prevent damage to the elevator. In addition to minimizing vibrations, it is also possible to send commands to control operation equipment to control elevator groups even with small vibrations that do not cause any damage to elevators, as was the case with conventional acceleration-type seismic sensors. This is because it is expected that unnecessary stoppages will not occur.

[Problem that the invention seeks to solve]

Wave energy seismic detectors have made it possible to appropriately judge the strength of vibration and give commands, but the wave energy coefficient, or ``development of a wave energy seismic sensor'' by Mr. Onoda et al.
In order to calculate the physical quantity proportional to wave energy, which is detailed in Hitachi Review VOL67, No. 6, P65-70, 1985-6, the device has a fairly complicated circuit configuration. And one of the parts that make up the circuit
If one of the elevators is damaged, a control signal may be issued erroneously, which may cause a situation where all elevators controlled by the control operation device are stopped, disrupting traffic within the building. It ends up. Furthermore, even if the circuit was normal, there was a problem in that if a shock was accidentally applied to the sensor section that detects vibrations, a control signal would be generated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration sensing device for controlled operation that has improved reliability by not issuing commands to the controlled operation device even if a malfunction occurs.

[Means for solving problems]

A feature of the present invention is that an elevator control operation device includes a vibration sensor for controlled operation that determines the strength of vibration and issues a control operation command to the control operation device.
It has a micro-vibration sensor that operates at a lower level of vibration than the above-mentioned vibration sensor, and when both the micro-vibration sensor and the vibration sensor for controlled operation operate, the controlled operation is output from the vibration sensor for controlled operation. The vibration sensor for controlled operation, the minute vibration sensor, and the controlled operation device are connected to transmit the command to the controlled operation device.

[Effect]

Since the present invention has the above-described configuration, only when both the micro vibration sensor and the vibration sensor for controlled operation detect vibration, the signal is input to the control operation device, and the vibration for controlled operation is inputted to the control operation device. If only the sensor detects vibration, it is considered an internal malfunction and no command is transmitted. Microvibration detectors detect even the slightest vibrations in buildings due to earthquakes or strong winds, and are used to detect vibrations of up to 20 times per year on the top floors of ordinary skyscrapers.
Such vibrations only occur within hours. Therefore, the minute vibration sensor detects only 0.2% of the time in a year.
In this case, the probability that the control operation vibration sensor malfunctions at the same time is extremely low. Moreover, since the micro-vibration sensor can detect even the slightest vibration,
The structure is extremely simple and highly reliable, and the reliability of the vibration sensing device for controlled operation as a whole can be improved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram, in which a vibration sensor for control operation such as a wave energy seismic sensor 2 has a sensor 1, and outputs the detection signal of the sensor 1 in three stages, for example, to coil a relay. 3, 4, and 5 are excited. By energizing the coils 3, 4, 5, each relay closes its contacts 6, 7, 8. A contact 11 is connected in series with each coil, and each coil is energized only when this contact 11 is closed. Contact 1
1 is normally open and is closed only when the sensor 10 of the minute vibration sensor 13 is activated. Each contact 6, 7, 8 is connected to a control operation device 9,
Based on the contact information, the control operation device 9 performs a predetermined control operation.

Now, if vibration occurs in the building due to an earthquake or strong wind, the vibration is applied to the sensor 1 and the sensing body 10, and the contact 11 is closed by the micro vibration sensor 13. On the other hand, the wave energy seismic sensor 2 analyzes the signal from the sensor 1 and determines whether the signal is sufficient to issue a command to the control operation device 9. When the judgment result does not require a command, the coils 3, 4, 5 are not excited and the contacts 6, 7,
8 remains open. However, if the vibration is so strong that it is determined that a command should be given to the control operation device 9, the coils 3, 4,
5 is excited. That is, when the vibration is not so large, only the coil 3 is energized by closing the contact 11, and the contact 6 is closed. Therefore, the control operation device 9 causes the elevator group to wait at the nearest floor for a predetermined period of time, and then automatically resumes operation.

If the vibration is even stronger, the coils 3 and 4 are energized to close the contacts 6 and 7. Therefore, the control operation device 9 stops the elevator group at the nearest floor, suspends the operation, and resumes operation after inspection by a maintenance engineer.

Furthermore, when the vibration is extremely strong, coils 3, 4,
All contacts 5 are energized and contacts 6, 7, and 8 are closed. Therefore, the control operation device 9 brings the elevator group to an emergency stop.

By the way, high-performance vibration sensors for control operation, such as wave energy seismic sensors, have complicated circuit configurations for data processing, have a large number of parts, and have a high probability of failure. As a result, a command may be issued to excite the coil even though the building is not vibrating at all, but if there is no actual vibration, the sensing element 10 of the micro vibration sensor 13 is not activated, so contact 11 is open and none of coils 3, 4, 5 are energized. In this case, since a command has been issued from the wave energy seismic sensor 2, an alarm such as the alarm buzzer 12 or a display device is activated to make it clear that there is a malfunction.

In addition, if the wave energy seismic sensor 2 malfunctions by accidentally applying a shock to the sensor 1 even though it is not malfunctioning at all, the micro-vibration sensor 13 installed nearby may not operate. Since the contact point 11 is open, the coils 3, 4, and 5 are not excited, and the control operation device 9 does not operate.

As described above, according to the present embodiment, it is possible to reliably prevent malfunction of a control operation sensor having a complicated circuit configuration, such as the wave energy type earthquake sensor 2, and improve reliability. Since the minute vibration sensor 13 is extremely simple and operates when there is vibration, it is generally extremely reliable and rarely breaks down. Since this micro-vibration sensor 13 is inexpensive, in other embodiments, a plurality of these can be arranged side by side and their contacts connected in parallel, and this micro-vibration sensor 13 can be used as the overall control operation vibration sensor. It does not reduce reliability.

〔Effect of the invention〕

As explained above, the present invention is provided with a minute vibration sensor, and the command of the vibration sensing device for controlled operation is transmitted to the controlled operation device only when this and the vibration sensor for controlled operation are activated. Failures in the driving vibration sensing device itself can be distinguished, and overall reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a vibration sensing device for controlled operation according to an embodiment of the present invention. 1...Sensor, 2...Wave energy type earthquake sensor, 9...Control operation device, 10...Sensing body,
11...Contact, 13...Minimum vibration sensor.

Claims (1)

[Claims] 1. In an elevator control operation system that has a vibration sensor for controlled operation that determines the strength of vibration and issues a control operation command to the control operation device, a minute vibration sensor that operates at a lower level of vibration than the vibration sensor mentioned above is installed. A vibration sensor for controlled operation is configured to transmit a controlled operation command output from the vibration sensor for controlled operation to the controlled operation device when both the micro vibration sensor and the vibration sensor for controlled operation operate. , a control operation device for an elevator, characterized in that a minute vibration sensor and a control operation device are connected.