KR910008135Y1 - Device protecting play of elevator - Google Patents

Abstract

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Description

Elevator mischief prevention device

1 is a conventional cage call registration circuit diagram.

Figure 2 is a relay drive circuit for unattended detection in the cage of the present invention.

3 is a cage call registration circuit diagram of the present invention.

4 is an input voltage waveform diagram of a second degree comparator when a passenger boards a lift.

5 is an input voltage waveform diagram of a second degree comparator when the passengers get off the elevator.

* Explanation of symbols for main parts of the drawings

BT _1- BTn: Cage call registration button D ₁ -Dn: Cage call registration relay

Ctt ₁ : Hatch Door Sensor Contact Ctt ₂ : K-Door Sensor Contact

1, 2: comparators 3, 4: latch

5, 6: counter 7: subtractor

I ₁ -I ₂ : Inverter OR ₁ , OR ₂ : Oagate

NOR ₁ : Noah gate TR ₁ : Transistor

E: Relay for unattended detection SW ₁ : Manual switch

The present invention relates to an elevator mischief prevention device that can automatically cancel all cage call registrations when there are no passengers in the cage, thereby stopping the unmanned operation of the elevator due to mischief of the passenger.

In the conventional cage call registration circuit, as shown in FIG. 1, the magnet brake drive detection relay contact B _b and the call detection relay contact C _a connected in parallel with the safety detection relay contact A _a are connected. It was configured by common connection to the contacts (D _1a -D _na ) of each cage call registration button (BT ₁ -BT _n ) and cage call registration relay (D ₁ -D _n ) through.

In the conventional call registration circuit configured as described above, when the elevator arrives at the target floor, the magnet brake driving detection relay is driven so that its contact point B _b is opened, and when there is no upper cage call registration, the call detection relay contact point Since (C _a ) is open, the power applied to each layer call registration relay (D ₁ -D _n ) is cut off, and all call registrations below the target layer are canceled.

However, if the upper cage call is registered due to the misoperation or mischief of the passenger after all the passengers have arrived at the destination floor and the passengers have unloaded, the lift detection relay contact (C _a ) remains connected, There was a drawback that the power consumption was increased and the driving efficiency was lowered because it operated without a cage call registration floor.

In view of the above, the present invention measures the number of passengers in the elevator and the number of passengers coming out of the elevator, and detects the absence of passengers in the cage from the signal of both coefficients. As it will be described in detail by the accompanying circuit diagram of the present invention as follows.

2, the safety relay contacts for detection as shown in Fig. 3 and Fig. (A _a) a cage call registration relay (D ₁ -D _n) a cage call registration button (BT ₁ -BT _n) each connected in common to the And a cage call registration circuit commonly connected to the contacts D _1a -D _na of the cage call registration relays (D ₁ -D _n ), wherein the connection points of the hatch door sensor contacts (Ctt ₁ ) and the resistor (R ₁ ) are compared. The common terminal is connected to the input terminals (a) and (a) of (1) and (2), and the enable terminal of the comparator 2 and the latch 4 through the inverter I ₂ ( ), ( ) And the connection point of the cage sensor contact (Ctt ₂ ) and the resistor (R ₂ ) to the input terminals (b) and (b) of the comparators (1) and (2), and the inverter (I _1). Enable terminal of the comparator 1 and the latch 3 ), ( ), And the output terminals (a> b) and (a = b) of the comparator 1 are connected to the input terminal D of the latch 3 through the oragate OR ₁ and the comparator 2 Output terminals (a = b) and (a> b) are connected to an input terminal (D) of the latch (4) through an oragate (OR ₂ ), and the output terminals (3) of the latches (3) and (4). Q) and (Q) are connected to the input terminals CP ₀ and CP ₀ of the counters 5 and 6, respectively, and the output terminals A ₀ -A ₃ of the counters 5 and 6, respectively. ), (B ₀ -B ₃ ) are connected to the input terminals 1A-4A and (1B-4B) of the subtractor 7, respectively, and then the output terminals 1Q-4Q are connected through the NOA gate (NOR ₁ ). In addition to the common connection to the reset terminals (MR ₁ , MR ₂ ), (MR ₁ , MR ₂ ) of the counters (5), (6) together with the manual switch (SW ₁ ) through the resistor (R ₃ ) again It is connected to the base of the transistor TR ₁ , and the undetectable relay E is connected to its collector, and the contact E _a of the unattended detection relay E is connected with the safety detection relay contact A _a . , Each floor It is configured by connecting between the contact registration button (BT ₁ -BT _n ) and the contacts (D _1a -D _na ) of the cage call registration relays (D ₁ -D _n ), wherein the comparator 1 has its input terminal ( When the voltage applied to a) is greater than the voltage applied to the input terminal (b), a high potential signal is output to its output terminal (a> b), and its output terminal when the voltage applied to both input terminals (a) is the same. A high potential signal is output to (a = b), and the comparator 2 is applied to its output terminal a> b when the voltage applied to its input terminal a is lower than the voltage applied to the input terminal b. Outputs a high-potential signal, and outputs a high unit signal to its output terminal (a = b) when the voltages applied to both input terminals (a) and (b) are equal, and the counters (5) and (6) When a high potential signal is applied to the input terminal CP ₀ and a low potential signal is applied, the subtractor 7 counts the input terminal 1B-4B at its value applied to its input terminals 1A-4A. It is to subtract the added value.

In addition, the sensor contact point (Ctt ₁ ) and the cage door sensor contact point (Ctt ₂ ) in the hatch diagram are contacts of a prosensor connected when the passenger passes through the hatch door and the cage door. ) Is the contact that is connected when the relay is driven, and the b contact ( ) Is the contact point when the relay is not driven.

In the description of the drawings, reference numeral B + denotes a power supply terminal, and 8 denotes a display for displaying an output signal of the subtractor 7. FIG.

Referring to the effects of the present invention configured in this way in detail as follows.

When the passenger boards the elevator while the power is applied, the passenger passes through the hatch door first and then the cage door, so the hatch door sensor contact (Ctt ₁ ) is connected first and the cage door sensor contact (Ctt ₂ ) is connected. After the connection, the hatch door sensor contact (Ctt ₁ ) is opened first and the cage door sensor contact (Ctt ₂ ) is opened later.

Accordingly, a square wave signal as shown in Fig. 4a is applied to the input terminals a of the comparators 1 and 2, and a square wave signal as shown in Fig. 4b is applied to the input terminals b. .

At this time, while the high potential signal is applied only to the input terminals (a) of the comparators (1) and (2) (t ₁ -t ₂ ), the high potential signal is inverted into a low potential signal in the inverter (I ₂ ) and thus the comparator ( 2) and the latch 4 are enabled, but a high potential signal is applied to the input terminal a of the comparator 2 and a low potential signal is applied to the input terminal b so that its output terminal a = b. ) and (a <b), the low potential signal is output, and the low potential signal is also output to the output terminal Q of the latch 4.

In addition, the low potential signal applied to the input terminals b of the comparators 1 and 2 is inverted into a high potential signal in the inverter I ₁ to make the comparator 1 and the latch 3 disabled. Therefore, the low potential signal is also output to the output terminal Q of the latch 3. Accordingly, the counter 5, the input terminal of the (6) (CP _0), is applied to the low potential, the continued signals (CP ₀₎ does not perform the count.

Thereafter, while the high potential signal is applied to both the input terminals (a) and (b) of the comparators (1) and (2) (t ₂ -t ₃ ), the high potential signal is the inverter (I ₁ ), (I ₂ ), the comparator (1), (2) and latches (3) and (4) are enabled by inverting to a low potential signal, so that the output terminals (a = b) of the comparators (1) and (2), (a = b) is input to the input terminals (D) and (D) of the latches (3) and (4) through the oragates (OR ₁ ) and (OR ₂ ), respectively, after a high potential signal is output. yiettara latch (3), so is the output terminal (Q), (Q), there is output a high potential signal, the counter 5, the input terminal (CP _0), (CP ₀₎ of 6 (4) count Do not.

after. While the high potential signal is applied only to the input terminals b of the comparators 1 and 2 (t _{3 to} t ₄ ), the comparator 2 and the latch 4 are disabled in the above manner. The output terminal Q of the latch 4 continues to output a high potential signal as a previous signal, and the comparator 1 and the latch 3 are in an enabled state, so the output terminal (a> b) of the comparator 1 and (a = b), the low potential signal is output, and the low potential signal is also output to the latch (3) output terminal (Q). Accordingly, the high potential signal is applied to the input terminal CP ₀ of the counter 5, and the low potential signal is applied, thereby counting them.

In this way, when a passenger boards the elevator, the number of boardings is counted by the counter 5 and output to the output terminals A ₀ -A _{3. For} example, when three passengers board the elevator, the counter ( 5), the high potential signal is output to its output terminals (A ₀ ) and (A ₁ ), and the low potential signal is output to the output terminals (A ₂ ) and (A ₃ ) so that the input terminal of the subtractor 7 (1A), (2A), (3A), and (4A), and at this time, a low potential signal is output to the output terminals B ₀ -B ₃ of the counter 6 so that the input terminal of the subtractor 7 ( 1B to 4B, high potential signals are output to the output terminals 1Q and 2Q, and low potential signals are output to the output terminals 3Q and 4Q. It is applied to the input terminal of the (NOR _1), yiettara is a low potential signal outputted to the output terminal of the NOR gate (NOR ₁₎ off the transistor (TR ₁₎ sikimeu For unattended detection relay (E) is not to be driven his contact point (E _b) maintains a connected state.

Therefore, at this time, the passenger who is wet in the cage can press the cage call registration button BT ₁ -BT _n to register the cage call.

On the contrary, when the passenger gets out of the elevator, the passenger passes through the cage door first and then through the hatch door, so the cage door sensor contact (Ctt ₂ ) is connected first and the hatch door sensor contact (Ctt ₁ ) is connected afterwards. The door sensor contact (Ctt ₂ ) opens first and the hatch door sensor contact (Ctt ₁ ) opens later.

Accordingly, square wave signals as shown in Figs. 5A and 5B are applied to the input terminals a and b of the comparators 1 and 2, respectively.

At this time, the comparator (1), as there in the same way as the (t ₁ -t ₂₎ over which is applied the input terminal (b) the high potential signal of only 2 comparator (2), (4) is in a disabled state The low potential signal is continuously outputted to the output terminal Q of the latch 4, and the comparator 1 and the latch 3 are enabled, but the low potential is also continued to the output terminal Q of the latch 3. The signal is output.

Thereafter, while high potential signals are applied to the input terminals (a) and (b) of the comparators (1) and (2), the output terminals Q of the latches (3) and (4) are applied to (t ₂ -t ₃ ). ) And (Q) are all high-potential signals, and if the high-potential signal is applied only to the input terminals (a) of the comparators (1) and (2), the output terminal (Q) of the latch (3) before The high potential signal, which is a signal, is continuously output, and the low potential signal is output to the output terminal Q of the latch 4.

Therefore, the high potential signal is applied to the input terminal CP ₀ of the counter 6 and the low potential signal is applied, thereby counting them.

In this way, when the passengers get off the elevator, the number of the passengers getting off is counted by the counter 6 and output to the output terminals B ₀ -B _3. Therefore, when all passengers boarding the elevator get off, the counter outputs the counter 6. The signal is equal to the count output signal of the counter 6, and accordingly, the signal applied to the input terminals 1A-4A of the subtractor 7 and the signal applied to the input terminals 1B-4B are the same, and their output terminals ( 1Q-4Q) outputs a low potential signal, so a high potential signal is output to the output terminal of the NOR gate NOR ₁ , and this high potential signal turns on the transistor TR ₁ to drive the unmanned detection relay E. Therefore, the contact point E _b is opened to cancel all the cage call registration.

On the other hand, the high potential signal output from the NOA gate NOR ₁ resets the counters 5 and 6.

During maintenance or inspection, the manual switch SW ₁ is connected so that the transistor TR ₁ remains open regardless of the output signal of the NOA gate NOR ₁ so that the contact point E of the relay E for unmanned detection relay E is maintained. _b ) will remain connected.

As described above, the present invention cancels all the cage call registrations when all the passengers in the cage are dropped, so that it is possible to completely prevent the unmanned operation of the elevator due to misoperation or mischief of the passenger, thus eliminating unnecessary power consumption and operating efficiency of the elevator. There is an advantage to improve it.

Claims (2)

In the cage call registration circuit in which the cage call registration relays (D ₁ -D _n ) are driven by pressing the cage call registration buttons (BT ₁ -BT _n ), the hatch door sensor contacts (Ctt ₁ ) and the cage door sensor contacts ( Ctt ₂ ) is commonly connected to the input terminals (a) and (b) of the comparators (1) and (2), and the comparator (2) and the latches are connected through the inverters (I ₁ ) and (I ₂ ), respectively. (4) Enable terminal ( ) And the enable terminals of the comparator 1 and the latch 3 ) And (a = b, a> b), (a = b, a <b) of the comparators (1) and (2), respectively, oragate (OR ₁ ) and (OR ₂ ), respectively. Connected to the input terminals D of the latches 3 and 4, and the output terminals Q of the latches 3 and 4 are input terminals CP ₀ of the counters 5 and 6. Connected to the respective output terminals A ₀ -A ₃ and (B ₀ -B ₃ ) to the input terminals 1A-4A, 1B-4B of the subtractor 7, and then to the output terminals 1Q of the The -4Q is commonly connected to the reset terminals MR ₁ and MR ₂ of the counters 5 and 6 and the base side of the transistor TR ₁ through the NOA gate NOR ₁ , and this transistor TR _1. Elevator unconnected detection relay (E) to the collector of the elevator (E _b ) and the cage call registration button (BT _1- BT _n ), characterized in that the elevator mischief prevention device characterized in that the configuration. The elevator mischief prevention device according to claim 1, wherein a manual switch (SW ₁ ) is connected to the base of the transistor (TR ₁ ).