CN110386524B

CN110386524B - Universal arrival clock

Info

Publication number: CN110386524B
Application number: CN201910760668.9A
Authority: CN
Inventors: 钱良楚; 史世江; 张永东; 钱亚平; 杨淑晏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2024-05-10
Anticipated expiration: 2039-08-16
Also published as: CN110386524A

Abstract

The invention discloses a universal arrival clock, which comprises a power supply module, a voltage detection module, and a reminding module, wherein the voltage detection module is used for monitoring the power supply voltage of a main motor of an elevator and sending out a signal when the power supply voltage is reduced, and the reminding module is used for reminding according to the signal. The invention can be installed on any type of elevator to provide arrival reminding for users.

Description

Universal arrival clock

Technical Field

The invention relates to a station clock, in particular to a universal station clock which is not limited by the type of an elevator.

Background

The arrival clock is an important component of the elevator, and when the elevator arrives at the floor selected by the customer, a sound or photoelectric effect can be generated to remind the user of arrival. At present, the drive signal of the arrival clock of any elevator car in the prior art is provided by a Programmable Logic Controller (PLC) or a single chip Microcomputer (MCU) of an elevator control system, and a special hardware interface and corresponding software drive are needed to provide the arrival signal, so that the 1-2 output contacts of the elevator PLC or MCU are occupied without exception, and a special interface is also needed to be matched. Secondly, because the structures of the elevator cars of all brands are different, the models of a Programmable Logic Controller (PLC) or a single chip Microcomputer (MCU) adopted by an elevator control system are also different, the elevator cars of all brands cannot be directly used in common, and inconvenience is brought to elevator manufacturers in selecting and matching the elevator cars to the station clocks or installing the elevator cars to the station clocks of old elevators.

Disclosure of Invention

The invention aims to provide a universal arrival clock aiming at the defect that the arrival clock in the prior art is not universal.

The arrival clock provided by the invention comprises a power supply module, a voltage detection module for monitoring the power supply voltage of a main motor of an elevator and sending out a signal when the power supply voltage is reduced, and a reminding module for reminding according to the signal.

Preferably, the power module is a power module of an elevator or a rechargeable power module independent of an elevator.

Preferably, the system further comprises a signal processing module for signal processing, wherein the signal processing module comprises a bridge rectifier sub-module, a filtering sub-module and a voltage reduction sub-module.

Preferably, the signal processing module is connected with the reminding module through a photoelectric coupler.

Specifically, the reminding module comprises an audio module and/or a photoelectric module.

Specifically, the sound module comprises a voice chip, a power amplifier module, an audio transformer and a loudspeaker which are sequentially connected behind the photoelectric coupler.

The invention can acquire the driving signal of the elevator car to the stop clock without occupying the software and hardware resources of the control system of the elevator, and can be applied to any brand of elevator to provide stop reminding for people.

Drawings

Fig. 1 shows a schematic structure of the present invention.

Fig. 2 shows an emphasized circuit diagram of the present invention.

Detailed Description

The invention is described in detail below with reference to the drawings and examples, and the examples described are only some, but not all, examples of the invention.

FIG. 1 shows a detailed hardware block diagram of a preferred embodiment of the present invention. The arrival clock comprises a power supply module, a voltage detection module, a signal processing module and a reminding module.

The power module provides power for all components of the access clock, and can be connected with the power supply of the elevator to realize power supply, or can be used independently of the rechargeable power module of the elevator to realize power supply, such as a rechargeable storage battery and the like.

The voltage detection module is connected to a dragging power supply of the main motor of the elevator, monitors the power supply voltage of the main motor of the elevator and uses the voltage change signal as an elevator arrival signal when the power supply voltage drops. The voltage detection module comprises an interface composed of two power lines and a fuse connected with the interface in series.

The signal processing module comprises a bridge rectifier sub-module, a filter sub-module and a voltage regulating sub-module. The sub-modules are used for carrying out bridge rectification, filtering, voltage regulation and other treatments on the elevator arrival signals. The voltage regulating sub-module comprises a voltage regulating resistor connected between the filtering sub-module and the bridge rectifier sub-module.

The reminding module is connected with the signal processing module through a photoelectric coupler. The reminding module can be an acoustic module, a photoelectric module or a combination of the acoustic module and the photoelectric module. The sound module comprises a voice chip, a power amplifier module, an audio transformer and a loudspeaker which are sequentially connected behind the photoelectric coupler. The photoelectric module can adopt a flashing red-green double-color lamp and the like.

When the elevator car is required to run, the dragging power supply supplies power normally, so that the main motor can drag the elevator car to move, the voltage detection module is used for detecting the change of the power supply voltage, the elevator is stopped to run no matter what electric dragging mode the main motor of the elevator is in, the power supply voltage starts to be reduced, the voltage change signal is used as an elevator arrival signal, the signal is subjected to bridge rectification, filtering, voltage regulation and other measures, the photoelectric coupler is used for triggering a voice chip storing arrival sound to work, the signal of the voice chip is amplified by the power amplifier and then is boosted by the audio transformer, then the signal is sent to the elevator car top by the elevator trailing cable, finally the audio transformer positioned at the car top is connected, and the signal is reduced by the audio transformer and then connected to the loudspeaker for sounding. The elevator stops running after about 2-4 seconds after the loudspeaker makes the arrival sound, so that the elevator arrival clock meets the requirement of making the arrival clock sound in advance. When the elevator is in maintenance operation, as the power supply voltage on the main motor of the elevator is lower, and the arrival clock judges that the power supply voltage at the moment is smaller than a preset value, the elevator can be known to be not in operation of the elevator car, so that the operation of the voltage detection module can be insufficient, the arrival sound can not be emitted before the elevator stops operating, and the characteristic that the elevator stops operating and does not emit the arrival sound when the common elevator arrives at the station clock in maintenance operation is met.

As shown in fig. 2, J5 in the drawing is a universal interface composed of two power lines, the universal interface is connected with the power supply of the main motor of the elevator, the power supply of the main motor of the elevator generally has three lines, the universal interface can be connected with any two lines, or the universal interface is not needed, and the universal interface can also be directly connected with any two lines of the main power supply of the elevator by adopting the power lines. Then pass through two fuses F1, F2 that prevent short circuit, pass through the wave filter that constitutes by electric capacity C11, C12 and transformer L1 again and come the high frequency clutter, for example the clutter that is greater than 50 Hz, then pass through voltage regulating resistor RP1, voltage regulating resistor RP1 is here the effect in order to match any elevator, because the voltage of different elevators has high or low, make this voltage to the station clock circuit can adapt to the voltage of any elevator through voltage regulating resistor RP1, afterwards pass through bridge rectifier and carry out the rectification, pass through the steady voltage tube and stabilize the voltage, pass through photoelectric coupler, when elevator normal operation, this time photoelectric coupler communicates, when the elevator is about to arrive the station and slow down, the main motor voltage reduces, at this time photoelectric coupler breaks, can trigger a signal from IO1 to the chip that controls the broadcast to the station clock sound, the speech signal that this chip sent is weaker, pass through the step-up transformer after the amplification of pronunciation power amplifier circuit, so that can be through the travelling cable of elevator (can adopt the spare cable in the travelling cable) and carry out the long distance transmission, then pass through the photoelectric coupler, and then step down horn is passed to the station through to the loudspeaker before the step-down, the warning station is carried out by the loudspeaker to the final warning station. The photoelectric coupler is adopted to realize the electric isolation function between the elevator main motor power supply (high voltage) and the local station clock.

Specifically, the invention removes various high-frequency interference through a filtering submodule consisting of a common-mode inductance filter and a capacitor from a power supply voltage (whether alternating current or direct current) directly collected from a power supply line of a main motor of the elevator, rectifies the voltage (whether alternating current or direct current) signal into a direct-current voltage signal through a bridge rectifier submodule, reduces the voltage into a voltage of a plurality of volts through a resistor, adjusts the voltage to a proper voltage value through a sampling potentiometer to drive a photoelectric coupler, and can transmit the signal to the next stage through the photoelectric coupler, thereby realizing electric isolation. Meanwhile, the photoelectric coupler can be applied to different voltage occasions, and the photoelectric coupler at the position which is adjusted to the optimal proper voltage by adjusting the sampling potentiometer can not work in advance or in retard, so that the phenomenon of advance or retard is avoided. The output signal of the photoelectric coupler drives a voice chip (several sounds can be stored in advance) to send out a voice signal to a station, the signal is amplified by a voice power amplifier, the amplified signal is raised to about 100 volts by an audio transformer to be convenient for long-distance transmission, the voice signal is transmitted to a car part of an elevator through a travelling cable of the elevator, and finally the audio voltage is reduced to 1.5 volts by an audio step-down transformer of the car top part to be provided for a loudspeaker to send out the sound to the station. The normal speed operation and the maintenance speed operation of the same elevator have larger power supply voltage difference of the main motor of the elevator, the position of the main motor is adjusted to the optimal voltage by adjusting the sampling potentiometer, the arrival clock sound is not generated when the elevator is maintained and stopped, and the arrival reminding is carried out only when the normal speed operation of the elevator starts to be decelerated.

The above examples are only for illustrating specific embodiments of the present invention. It should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit of the invention, and these modifications and variations should be considered to be within the scope of the invention.

Claims

1. The universal arrival clock is characterized by comprising a power supply module, a voltage detection module, a reminding module and a control module, wherein the voltage detection module is used for monitoring the power supply voltage of a main motor of an elevator and sending out a signal when the power supply voltage drops;

The voltage detection module includes: the power supply system comprises a universal interface, a short-circuit-preventing fuse F1 and a short-circuit-preventing fuse F2, a filter, a voltage regulating resistor RP1, a bridge rectifier circuit, a voltage stabilizing tube and a photoelectric coupler, wherein the universal interface consists of two power lines and is used for connecting a power supply of a main motor of an elevator, the fuse F1 and the fuse F2 are sequentially connected behind the universal interface, and the filter consists of capacitors C11 and C12 and a transformer L1 and is used for filtering high-frequency clutter; when the elevator normally operates, the photoelectric coupler is communicated at the moment; when the elevator is about to arrive at a station for speed reduction, the voltage of the main motor is reduced, at the moment, the photoelectric coupler is disconnected, the voice chip storing the arrival sound is triggered to work, the signal of the voice chip is amplified by the power amplifier and then is boosted by the audio transformer, then the signal is sent to the elevator car roof by the elevator trailing cable, finally, the signal is connected with the audio transformer positioned at the car roof, and the signal is connected to the loudspeaker for sounding after being reduced by the audio transformer.

2. The universal access clock of claim 1, wherein the power module is a power module of an elevator or a rechargeable power module independent of an elevator.

3. The universal docking station of claim 1, further comprising a signal processing module for signal processing, the signal processing module comprising a bridge rectifier sub-module, a filter sub-module, and a buck sub-module.

4. A universal docking station as recited in claim 3, wherein the signal processing module is coupled to the reminder module via a photocoupler.

5. The universal docking station as recited in claim 4, wherein the reminder module comprises an audio module and/or a photovoltaic module.

6. The universal docking station of claim 5, wherein the sound module comprises a voice chip, a power amplifier module, an audio transformer, and a speaker connected in sequence after the optocoupler.

7. The universal docking station as recited in claim 1, wherein the voltage detection module comprises an interface comprised of two power lines, a fuse in series with the interface.

8. A universal docking station as recited in claim 3, wherein the voltage regulating sub-module includes a voltage regulating resistor connected between the filtering sub-module and the bridge rectifier sub-module.