JPS5930634B2 - Elevator running command speed pattern generation circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator running command speed pattern generation circuit which generates an elevator running command speed pattern when the elevator is stopped and checks its function.

Elevators are required to be extremely safe due to their function of transporting people.

Therefore, if the reliability of the operation of the equipment in the elevator control system cannot be guaranteed, it is necessary to take measures such as not operating the elevator.

Among the elevator running command speed pattern generation circuits included in the elevator control system, those with conventional mechanical and electrical elements are relatively unlikely to fail when the elevator is not running; It used to be difficult to check the case, but recently this technique 1.'
Beta travel command speed pattern generation circuits with many electronic elements have been proposed.

The part consisting of electronic elements is used to control the running of the elevator,
The probability of a failure occurring there is considered to be the same regardless of whether it is stopped.

Based on the above facts, this invention automatically checks the generation function of the elevator running command speed pattern when stopped,
If the function is not guaranteed, a signal to prohibit the start of the elevator is output, thereby guaranteeing the safety of the elevator.

Examples of the present invention will be described below.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In this figure, 1 is a car position detection circuit that detects changes in the position of the elevator car and generates one pulse when a certain position change is detected, and 2 is a time reference pulse used to generate an elevator running command speed pattern. 3 is based on time when accelerating (independent variable is only time), and when decelerating it is based on the remaining distance to the desired stop position at the corner of the elevator (remaining distance is incorporated as an independent variable). 4 is a current position counter for storing the position of the elevator car; and 5 is an elevator travel target position generating circuit.

Reference numeral 6 denotes a check time pulse generation circuit, which generates a faster time pulse than the time pulse generation circuit 2 used for actual running.

Reference numeral 7 denotes a checking position pulse generation circuit which receives as input the travel pattern (analog) output from the elevator travel pattern generation circuit, and is composed of a VF converter.

Reference numeral 8 denotes a check travel interval generation circuit which supplies the elevator travel pattern generation circuit 3 with the current position and the target travel position when checking the elevator travel pattern so that the rated speed is achieved.

Reference numeral 9 denotes an elevator running pattern check circuit that checks the pattern when the rated speed is reached, and if there is an abnormality in the pattern, it generates an elevator start prohibition signal.

10 is a switch SW1. when the elevator is stopped. SW2. S
W3. SW4. This is a check sequence controller that controls the check sequence of the pattern generation circuit by turning SW to the u T pp side and to the pa E''' side when the elevator is running.

FIG. 2 is a block diagram showing the internal configuration of the elevator running pattern check circuit 9. As shown in FIG.

In this figure, reference numeral 91 is a check time pulse counter that counts up the check pattern memory address counter 92 which counts up the check pattern memory 93 every fixed number of times.

Reference numeral 94 converts the analog pattern voltage output from the elevator running pattern generating circuit 3 of FIG. 1 into a digital quantity.

95 detects whether the difference between the data in the check pattern memory 93 and the digitized pattern is within a certain level, either absolutely or relatively, and if it exceeds a certain level, generates a signal to prohibit starting the elevator. This is a pattern comparison circuit that allows

3 and 4 show the check pattern memory 93 shown in FIG.
shows the relationship between the address and its contents.

The check pattern memory 93 stores patterns such that the rated speed is instantaneously achieved at every time interval Δt.

Next, the operation of the embodiment shown in FIG. 1 will be explained.

When the elevator is to run, the check sequence controller 10 turns the switches SW1 to SW to the 'E' side as shown in the figure, and the elevator running pattern generation circuit 3 receives the current position signal and car car as the output of the current position counter 4. A car distance pulse is input as the output of the position detection circuit 1, a time pulse as the output of the time pulse generation circuit 2, and a travel target position signal from the travel target position generation circuit 5 are input, and the elevator travel pattern generation circuit 3 receives these input signals. Generates an elevator running pattern.

This running pattern signal is input to an elevator speed control device (not shown) via switch SW3.

If the elevator is not run yet, the check sequence controller 10 sets switches SW1 to SW5.
is input to the T'' side, and the elevator running pattern generation circuit 3 outputs the check time pulse from the check time pulse generation circuit 6 instead of the time pulse, and the output from the check position pulse generation circuit 7 instead of the car distance pulse. Instead of the check distance pulse, current position signal, and travel target position signal, the output check current position signal and check travel target position signal of the check travel interval generation circuit 8 are input, and elevator travel is performed in the same way as when traveling. The pattern generation circuit 3 generates a running pattern.

This travel pattern is input to the elevator travel pattern check circuit 9 via switch SW3.

The elevator running pattern check circuit 9 checks whether the relationship between this pattern and the check time pulse is normal or not, and if it is not normal, generates an elevator start disabling signal.

As explained in detail above, if an abnormality occurs in the elevator running pattern generating circuit, this invention can detect it while the elevator is stopped and make it impossible to start the elevator, so it can continue to run as before. Elevators can be operated more safely than those detected from

Furthermore, although the stopping time of an elevator may be shorter than the time required for the elevator to run at its rated speed, in this invention it is possible to generate a running pattern using a time pulse faster than the time pulse used for actual running. Because you can
There are advantages such as being able to check the elevator pattern generation circuit in a short time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
Figure 2 is a block diagram showing the internal configuration of the elevator running pattern check circuit in Figure 1, and Figures 3 and 4 are
FIG. 3 is a diagram showing the relationship between addresses and contents of the check pattern memory shown in the figure. In the figure, 1 is a car position detection circuit, 2 is a time pulse generation circuit, 3 is an elevator travel pattern generation circuit, 4 is a current position counter, 5 is a travel target position generation circuit, 6 is a check time pulse generation circuit, and 7 is a 8 is a check position pulse generation circuit; 8 is a check travel interval generation circuit; and 10 is a check sequence controller.

Claims (1)

[Scope of Claims] 1. Elevator running equipped with an elevator running pattern generating circuit that has a car position pulse generating means and a time pulse generating means, and receives the time pulse, position pulse, and distance to the destination floor as inputs. The command speed pattern generation circuit includes means for generating a check position pulse and a check time pulse, and when the elevator is stopped, the check time pulse is used in place of the time pulse, and the check time pulse is used in place of the position pulse. An elevator travel command speed pattern generation circuit, comprising means for inputting a check position pulse into the elevator travel pattern generation circuit. 2. The elevator running command speed pattern generation circuit according to claim 1, wherein the time pulse during the test is faster than the time pulse during the normal time. 3. The commanded speed pattern for the test when the elevator is stopped is a pattern in which the rated speed is instantaneously sampled at equal time intervals, which is then stored and generated from now on. The elevator running command speed pattern generation circuit described above.