JPS6111873B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator car position display device that detects and controls the car position by adding/subtracting pulses generated in synchronization with the elevator car's ascent and descent.

In an elevator, a signal representing the car position is the most important and fundamental signal for elevator control. Conventionally, a mechanical floor selector has been used to detect such a car position.
This mechanical floor selector is a scaled-down model of an elevator installed in a machine room, and includes a synchronous moving body that shrinks and operates in synchronization with the lifting and lowering of the actual car.
It consists of a movable brush that is fixed to this synchronous moving body and moves together with the synchronous movable body, a fixed brush that is fixed to the frame, and the like. This fixed brush is provided corresponding to the generation position of a signal necessary for controlling each floor or elevator, and when the movable brush comes into contact with this fixed brush, a signal corresponding to the ascending and descending position of the car is obtained. ing. However, since such a device uses a reduced model, it is difficult to make adjustments to accurately detect the car position, and since it is composed of mechanical elements, maintenance is time-consuming.

For this reason, recently, electronic flooring has been developed that outputs a pulse signal in synchronization with the raising and lowering of the car, and detects the car position by adding or subtracting the pulse signal according to the direction of movement. A selector is considered.

However, the display contents of conventional elevator position display devices of this type display floors 1, 2, 3, etc. corresponding to each floor, and when the car is located between floors, the exact position is displayed. It cannot be displayed. In other words, with such display contents, it is impossible to distinguish whether the car is running or stopped while the display does not change, which causes a sense of irritation to customers waiting at the landing. In addition, in the event of an abnormality such as a breakdown or power outage, if the car stops at a location other than the floor location and becomes unable to run, it would be possible to reliably detect that the distance between the nearest floor and the car is shorter than a predetermined distance. For example, a caretaker can instruct a passenger in a car how to forcefully open the door over an intercom or the like, allowing the passenger to quickly escape. However, if you cannot reliably determine the distance between the nearest floor and the car, wait for the arrival of maintenance personnel with specialized knowledge and stop the car based on the positional relationship between the floor selector's synchronous movable body and the fixed brush. The location must be estimated and, if necessary, manually or by other auxiliary means, the car must be moved to the nearest floor, the door opened, and the passenger rescued. For this reason, it takes a long time to carry out the rescue operation, and the passengers trapped inside the car are unnecessarily frightened. Furthermore, mechanical floor selectors reduce the movement of cars in an analog manner, so they can determine the position of cars that have stopped between floors, but electronic floor selectors only display floors, so It is not possible to accurately detect the stopping position of a stopped car, which makes it extremely difficult to rescue passengers.

The present invention was made in view of the above-mentioned circumstances, and detects and controls the position of a car by adding/subtracting pulses generated in synchronization with the elevator car's lifting and lowering, even when the car is located between floors. It is an object of the present invention to provide an elevator car position display device that can accurately detect and display the position. Hereinafter, one embodiment of the present invention will be described in detail with reference to the block diagram shown in FIG. First, in synchronization with the running of the car, a car running pulse signal A generated by, for example, a pulse generator is outputted in accordance with the moving direction of the car, and an addition/subtraction count command signal B that instructs the counting direction of the counter is sent to the first addition/subtraction counter 1. Give and count. and the count output of the first addition/subtraction counter 1 representing the car position;
That is, the car position signal C is applied to the first decoder 2, and the decoded output, that is, the inter-floor passing pulse signal D, is applied to the second addition/subtraction counter 3 for counting. The second addition/subtraction counter 3 also receives the addition/subtraction count instruction signal B to instruct the counting direction. Then, the count output of the second addition/subtraction counter 3, that is, the car position display signal E, is applied to the landing area of each floor and a floor indicator provided inside the car to display the car position. Further, the car position display signal E of the second addition/subtraction counter 3 is supplied to the memory 5, and the floor position signal F corresponding to each display floor stored in the memory 5 is provided.
get. This floor position signal F and the car position signal C of the first addition/subtraction counter 1 are then applied to a subtraction circuit 4 for subtraction. Then, from the subtraction circuit 4, the sign of the calculation result, that is, the vertical position signal H representing the upper or lower position of the car position with respect to the nearest floor, and the calculated value, that is, the distance signal G between car floors representing the distance between the car and the nearest floor, are obtained. . In addition, the car position display signal E of the second addition/subtraction counter 3 representing the nearest floor is
is applied to the decoder 6 and decoded, and the nearest floor signal J
get. Then switch 1 to switch the car floor distance signal G, the vertical position display signal H, and the nearest floor signal J.
1 to the display devices 7, 8, 9, and 10. The display 7 is provided in the machine room, the display 8 is provided in the car room, the display 9 is provided in the manager's room, and the display 10 is shown as a representative set provided in the landing on each floor. Each display 7, 8, 9, 10 has a display section of 3 sections, the first section 7j, 8
The nearest floor signal J, that is, the nearest floor is displayed at j, 9j, and 10j, and the second section 7h, 8h, and 9
The vertical position display signal H, that is, whether the car is above or below the nearest floor is displayed at h and 10h, and the third section 7g, 8g, 9
g and 10g display the car floor distance signal G, that is, the distance between the nearest floor and the car. Note that the circuit that generates the car running pulse signal A and the addition/subtraction command signal B to be applied to the first addition/subtraction counter 1 is backed up due to battery even during a power outage.

In this way, while the car is moving upward, the addition/subtraction count command signal B becomes "1" and an addition/subtraction command is issued to the first and second addition/subtraction counters 1 and 3. Then, the addition/subtraction counter 1 adds and counts the car running pulse A, and when this count output, that is, the car position signal C coincides with the intermediate position of each floor, the decoder 2
An interfloor passing pulse D is emitted from the floor. On the other hand, the second
The addition/subtraction counter 3 counts this interfloor passing pulse D and outputs a car position display signal E. For example, if the car passes an intermediate position between the second and third floors while ascending, the second addition/subtraction counter 3 will add one pulse, and the car position display signal E will change from the second floor signal to the third floor signal. Change. On the other hand, since the memory 5 stores the position data of each floor, it outputs the floor position signal F indicated by the car position display signal E. Then, the position of the car rises towards the third floor within the zone where the car position display signal E indicates the third floor, that is, within the zone from the middle position between the second and third floors to the middle position between the third and fourth floors. If the car is running, the floor position signal F is the position data for the third floor, and since the car position signal C is smaller than the floor position signal F, the negative signal of the calculation result of the subtraction circuit 4 is the vertical position display signal. The calculated value is output as a distance signal G between car floors. Here, switch 11 is
Display device 1 installed on each floor in ON or display state
A display example is shown in FIG. 2a for the case where the nearest floor signal J is 3 floors, the vertical position display signal H is negative, and the car floor distance signal G is 1.38 m. That is, the first section 10j of the display 10 displays "3F", the second section 10h displays "lower", and the third section 10j displays "3F".
section 10g displays "1.38M".
As the car approaches the third floor, the car floor distance signal G approaches 0, and when the car passes the third floor and rises further, the calculation result of the calculation circuit 4 becomes positive, and the car floor distance signal G approaches 0. Here, the nearest floor signal J is the 3rd floor, the vertical position display signal H is positive, and the distance signal G between car floors is
A display example for 0.25m is shown in Figure 2b. For example, the first section 10j of the display 10 displays "3F", the second section 10h displays "upper", and the third section 10j displays "3F".
Section 10g displays "0.25M".
That is, if the switch 11 is ON and in the display state, the car position can be accurately displayed even if it is in the middle of the floor. In addition, if the car stops within the display zone on the third floor after passing through the third floor due to a malfunction, for example, and the passenger is unable to get out, an alarm will be issued through the appropriate circuit and the manager will be notified so that the passenger can be quickly removed. can be rescued. In other words, the manager checks the display and, if the distance between the car and the nearest floor is closer than a predetermined distance, uses the intercom etc. to instruct the passenger to push open the door and escape, and if it is farther than the predetermined distance, maintenance is carried out. The car can be moved manually or by appropriate auxiliary means to the nearest floor, stopped at the correct floor position, and the passengers can escape. In addition, by backing up the car running pulse generation circuit and display circuit with a battery in case of an emergency such as a power outage, it is possible to safely cope with an emergency such as a power outage. In this case, battery consumption can be reduced by turning off the switch 11 and turning off the indicators 7, 8, 9, and 10. In addition, maintenance staff will maintain the elevator,
When performing inspection work, maintenance personnel can be informed of the exact position of the car, including between floors, and the work can be carried out efficiently.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, during the ascending and descending process, a predetermined reference floor,
Alternatively, the position of the basket from the lowest floor may be displayed as a decimal number, a fraction, or the like. FIG. 2c is an example in which a basket located on the third floor by 8/10 of the inter-floor distance from the second floor is expressed as a decimal number.

Further, in the above embodiment, the car travel pulses are processed by a hard logic circuit, but it goes without saying that they may be processed by a program using, for example, a microprocessor.
In addition, the displays 7, 8, 9, 10 include alphanumeric characters,
An appropriate display method can be used using arrows, symbols, etc., and distance display units such as m, cm, mm, etc. can be used as appropriate. Furthermore, by installing the display on the top of the car, it is extremely convenient to work on the top of the car.

In this way, the movement of the car can be displayed almost continuously, helping to reduce the frustration of customers waiting at the landing area.In addition, in the event of a breakdown, the exact position of the car can be known, allowing rescue work to be carried out quickly and safely. can be done. Furthermore, in this case, the passengers in the car can be informed of the position of the car and how the car is moving toward the nearest floor, allowing the rescue work to be carried out smoothly without causing any sense of anxiety. Furthermore, by turning off the display on the display, battery operating power can be reduced and long-term operation can be achieved.

As detailed above, the present invention detects and controls the position of an elevator car by counting pulses generated in synchronization with the movement of the elevator car, and displays the position of the car including between floors. It was designed to do so. Therefore, even if the car is located between floors, the position of the car can be accurately detected and displayed, and the elevator car position can be used to rescue passengers in the event of a breakdown and to perform maintenance and inspection safely and easily. A display device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIGS. 2a and 2b are diagrams showing display examples of the above embodiment, and FIG. 2c is a diagram showing a display example of another embodiment of the present invention. 1, 3... Addition/subtraction counter, 2, 6... Decoder, 4
...Subtraction circuit, 5...Memory, 7, 8, 9, 10...Display device, 11...Switch.

Claims (1)

[Scope of Claims] 1. In an apparatus that detects and controls the position of an elevator car by adding/subtracting pulses generated in synchronization with the travel of the elevator car, the car travel pulse and the direction of movement correspond to the travel speed of the elevator car. A pulse generator that outputs an addition/subtraction count command corresponding to the output signal of the pulse generator, a nearest floor signal representing the floor closest to the car by adding/subtracting the output signal of this pulse generator, and an upper/lower signal representing the relative position of the car with respect to the nearest floor. a counter for obtaining a directional position display signal and a distance signal between car floors representing the distance between the nearest floor and the car; a display for displaying the nearest floor signal, the vertical position display signal and a distance signal between car floors; An elevator car position display device comprising: 2. In what is stated in claim 1,
a first addition/subtraction count for obtaining a car position signal by adding/subtracting the output pulses of the pulse generator; a first decoder for decoding the count output of the first addition/subtraction counter to obtain an interfloor passing pulse; a second addition/subtraction counter that obtains a car position display signal by adding/subtracting the output of the first decoder; a memory for obtaining a position signal; a subtraction circuit for obtaining a vertical position display signal and a car floor distance signal from the count value of the first addition/subtraction counter and the floor position signal of the memory; An elevator car equipped with a second decoder that decodes a car position display signal to obtain a nearest floor signal, and a display that displays the nearest floor signal, a vertical position display signal, and a car floor distance signal. Position display device. 3 In a device that detects and controls the position of an elevator car by adding/subtracting pulses generated in synchronization with the running of the elevator car, car running pulses corresponding to the running speed of the elevator car and addition/subtraction counting commands corresponding to the moving direction. A pulse generator that outputs a pulse generator, a nearest floor signal that indicates the floor closest to the car by adding and subtracting the output signal of this pulse generator, and a vertical position display signal that indicates the relative position of the car with respect to the nearest floor. A counter that obtains a distance signal between car floors that represents the distance between the parking floor and the car, and a counter that receives this count value and displays the nearest floor on either the upper or lower side of the car, and converts the position between the floors into a decimal or fraction. 1. An elevator car position display device, comprising: a display device that displays the position of an elevator car.