KR19990054777A - Elevator floor recognition device - Google Patents

Abstract

The present invention utilizes a potentiometric matrix circuit composed of a plurality of resistors and switches, without using a conventional dip switch, encoding gate array, and decoding gate array, thereby simplifying the construction of the switchboard and simplifying installation work. Regarding the floor recognition apparatus for elevator of,

Installed on each floor, the rising signal generator and the falling signal generator for outputting the operation signal of the rising or falling corresponding to each floor as a pressure value in response to the user's button press, the rising signal generator and the falling signal generator And a microcomputer that determines the selection state of each layer while receiving an output signal, and determines a rising or falling state, wherein the rising signal generator and the falling signal generator respectively include a reference resistor connected between a supply power source and an output terminal, and the output terminal. A plurality of voltage distribution means for dividing the supply power by being connected in series and having a predetermined resistance value, and a plurality of switches, one end of which is connected to the voltage distribution means and the other end of which is grounded.

Description

Elevator floor recognition device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator floor recognition device, and more particularly to an elevator floor recognition device using a potential difference matrix circuit formed by a plurality of resistors and capacitors.

In general, an elevator is installed in a high-rise building for rapid movement of a person or cargo, and an elevator floor recognition device is included to accurately and quickly recognize which floor is selected in the elevator's main control system.

1 is a block diagram showing the configuration of a floor recognition device of an elevator according to the prior art.

Referring to FIG. 1, a conventional floor recognition apparatus of an elevator is provided with a plurality of dip switches installed on each floor and outputting a unique floor signal when a floor signal value is set by a installation engineer and selected by a user. (1), a plurality of first gate arrays (2) attached to each of the dip switches (1) for encoding layer signals according to selection, and an output signal of each of the first gate arrays (2) It is composed of a main board (3) to determine which floor has been selected.

At this time, the main board 3 includes a second gate array 3a as the encoded layer signal and a microcomputer 3b which recognizes the selected layer using the decoded layer signal.

Referring to the operation of the prior art configured as described above in detail.

First, the floor signal of each floor is set in advance by the installation engineer to the dip switch 1, and when a specific floor is selected by the user, the floor switch 1 of the corresponding floor outputs the floor signal. In this case, the floor signal may include an operation signal meaning up or down selected by an up / down button (not shown) input by a user.

When the layer signal is encoded by the first gate array 2 and sent to the second gate array 3a of the main board 3, the layer signal and the operation signal are decoded by the second gate array 3b. do. The decoded signal is then used to recognize the selected layer by the microcomputer 3.

For example, when the user presses the lift button of the elevator on the second floor, the floor signal meaning the second floor and the operation signal meaning the rising are encoded in the first gate array 2 and the second gate array 3a. Detoxify). Using this decrypted signal, the microcomputer 3b recognizes that the rising key is pressed on the second floor.

The floor recognition apparatus of the elevator of the prior art as described above requires a dip switch and a first gate array for each floor, so that the configuration of the switch board increases, so that the switch assembly increases, and the second gate array increases in number of floors. There is a problem in that several ports are required to receive the signal of the first gate array.

In addition, since communication is performed through various steps from the dip switches of each layer to the microcomputer of the main board, there is a possibility that noise is more likely to be included and a malfunction may occur.

In addition, there is a problem that the installation takes a lot of time because the engineer must set the dip switch for each floor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and its purpose is to use a potentiometric matrix circuit composed of a low cost resistor and a capacitor. The replacement of the switchboard simplifies the configuration of the switchboard and provides an elevator floor recognition device that eliminates the need for the installation engineer to set a dip switch on each floor.

1 is a block diagram of a floor recognition device of an elevator according to the prior art,

2 is a circuit diagram showing a first embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

A: rising signal generator B: falling signal generator

E: power supply R00, R10: reference resistance

C1, C2: Chattering prevention capacitor

R01, R02, ..., R0n, R11, R12, ..., R1n: Voltage distribution resistor

B01, B02, ..., B0n, B11, B12, ..., B1n: Floor selection switch

According to a first aspect of the present invention for realizing the above object, the rising signal generating unit is installed in each floor and outputs an operation signal of rising or falling corresponding to each floor as a contact pressure value according to a user's button presses; In the elevator floor recognition device including a falling signal generator, and a microcomputer to determine the selected state of each floor at the same time receiving the output signal of the rising signal generator and the falling signal generator,

The rising signal generator and the falling signal generator respectively include a reference resistor connected between a supply power supply and an output terminal, a plurality of voltage distribution means for dividing the supply power by being connected in series with the output terminal and having a predetermined resistance value; It provides an elevator floor recognition device consisting of a plurality of switches, one end is connected to the voltage distribution means and the other end is grounded.

In addition, according to the second aspect of the present invention, the voltage distribution means is composed of a resistor having a different resistance value, respectively, and the output terminal is configured by connecting a capacitor for preventing chattering of the output voltage value.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a circuit diagram showing the configuration of the present invention.

Referring to Figure 2, the floor recognition device of the elevator of the present invention is installed on each floor, the rising signal generator (A) for outputting the operation signal of the rising or falling corresponding to each floor as a pressure value in response to the user presses a button (A ) And a microcomputer that determines a rising or falling state while determining a selection state of each floor by receiving output signals of the falling signal generator B and the rising signal generator A and the falling signal generator B; Not shown).

In this case, the rising signal generator A has a reference resistance (4: R00) connected between the supply power (E) and the output terminal, respectively, and is connected in series with the output terminal to have a predetermined resistance value, thereby providing the supply power (E). ) A plurality of contact distribution resistors R01, R02, ..., R0n for dividing) and a plurality of lifts having one end connected to the plurality of resistors R01, R02, ..., R0n and the other end being grounded. A signal generating switch (B01, B02, ..., B0n) and a first capacitor (6: C1) connected to the output terminal to prevent chattering of the output voltage value.

In addition, the falling signal generator (B) is similar to the rising signal generator (A), the reference resistance (5: R10), a plurality of voltage distribution resistors (R11, R12, ..., R1n), and A falling signal generating switch (B11, B12, ..., B1n) and a second capacitor (7: C2) connected to the output terminal to prevent chattering of the output voltage value.

The resistors of the rising signal generator A and the falling signal generator B may be installed to correspond to each layer, and may have different resistance values so as to output different voltage values at the output terminal.

Referring to the operation of the present invention configured as described above are as follows.

In FIG. 2, the voltage applied to the analog / digital terminal of the microcomputer when the n-th switch Bn is selected from the plurality of switches may be obtained by Equation 1 below.

In this case, R0 is a reference resistor, Rk is an arbitrary voltage distribution resistor, and Vn represents a voltage applied to the analog / digital terminal of the microcomputer.

Here, when the maximum tolerance of the resistance value is 5%, the minimum value Vn.min and the maximum value Vn.max of the voltage Vn can be obtained using Equations 2 and 3 below.

For example, in the case of a nine-story building, nine switches are installed in each of the up button portion A or the down button portion B, and the supply voltage E is 5V and the minimum voltage is 0.4V. If the maximum voltage is set to 4.6V, the voltage interval between layers at this time is as shown in Equation 4 below.

When the resistance values of the reference resistor and the voltage divider resistor are designed to have the above voltage interval, the voltage interval between the layers is input to the analog / digital terminal of the microcomputer, so that the microcomputer can distinguish between the rising / falling and in several layers. Simultaneously recognize whether a button was pressed.

At this time, if the voltage distribution resistors RO1 to ROn and R11 to R1n are variable resistors, the voltage intervals between the layers can be easily adjusted.

In addition, in the above operation, the capacitors C1 and C2 prevent chattering of output voltage values generated when the switches B01 to B0n and B11 to B1n are pressed.

According to the floor recognition device of the elevator of the present invention as described above, because the low-cost resistors and capacitors are used to replace the conventional dip switches and gate arrays, the configuration is simple, and the reliability of operation can be improved. This eliminates the need for engineers to install dip switches, which simplifies installation.

Claims (2)

Installed on each floor, the rising signal generator and the falling signal generator for outputting the operation signal of the rising or falling corresponding to each floor as a pressure value in response to the user's button press, the rising signal generator and the falling signal generator In the floor recognition device of an elevator comprising a microcomputer receiving the output signal to determine the selected state of each floor and at the same time determine the rising or falling state, The rising signal generator and the falling signal generator respectively include a reference resistor connected between a supply power supply and an output terminal, a plurality of voltage distribution means for dividing the supply power by being connected in series with the output terminal and having a predetermined resistance value; Elevator floor recognition device characterized in that composed of a plurality of switches, one end is connected to the voltage distribution means and the other end is grounded. The method of claim 1, The voltage distribution means is composed of a resistor having a different resistance value, each of the floor recognition device of the elevator, characterized in that the output terminal is connected to a capacitor for preventing chattering of the output voltage value.