JPH0445085A - Safety device for elevator - Google Patents

Abstract

PURPOSE:To prevent a cage from moving at discretion by checking the presence of on-trouble at time of power making or mode selecting, and if it exists, nullifying the functions of the pushbutton or the like. CONSTITUTION:When power is made in circuit, respective on-off signals of both up and down pushbuttons 1, 2 are inputted, and if this up pushbutton 1 is turned on, a function of this up pushbutton 1 is nullified, and if it is off, it is made available. As for the down pushbutton 2, it is in the same way. Whether an auto-manual selector switch 3 is turned to the auto side or not is judged, and successively whether the up pushbutton 1 is off or not is judged, and if off is the case, the function of the up pushbutton 1 is made effective. Next, whether the down pushbutton 2 is off or not is judged, and if off is the case, the function of the down pushbutton 2 is made valid. Then, whether an operation mode is of manual mode or not is judged, and if it is not the manual mode, a determination of the travel direction by an automatic mode is executed. On the other hand, if it is the manual mode, whether both these pushbuttons 1, 2 are on or not judged as well, thereby generating a low-speed up command or low-speed down command.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention detects abnormalities in automatic reset type switches such as push buttons for maintenance operation of elevators and car call buttons, and prevents accidents from occurring. (It concerns Ruyu [Beta's safety device.

[Conventional technology]

The elevator is provided with a push button for maintenance and inspection installed on the car, a car call button, a push button for driver-assisted operation, etc. installed on the operation panel inside the car. By the way, if these push buttons, etc. are kept pressed due to mechanical auctions (this is a state in which the push button does not return to its original state even after the pressure is removed, hereafter simply referred to as auction), etc.6. If a failure in a similar condition (hereinafter referred to as a FON failure) occurs, it will lead to a very dangerous situation and may even lead to an accident.

Therefore, in the past, four timer circuits i, j, push buttons, etc. were turned on.
A method has been considered in which if the state continues for a predetermined period of time, the function of the push button, etc. is disabled.

However, when the driver operates the up push button and down push button used in manual operation (manual mode),
In the case of a pushbutton, etc. that has the function of causing the car to continue rising or falling while the car continues to rise or fall, the above-mentioned Conventional methods could not be used.

Therefore, in manual mode, if an ON failure occurs while the driver is operating the up button, each time the driver operates the down button, the function of the up button is disabled, and vice versa. A method has been considered in which when the down push button is turned on, the down push button is disabled by operating the up push button.

[Problems to be solved by invention]

However, the conventional means (1) N
This was based on the assumption that a failure would occur, and no countermeasures had been taken in the event that a GN failure had already occurred before the start of operation.

For example 1. While operating in automatic mode, if a war occurs on the F-1 up push button or down push button, or an ON failure occurs due to a short circuit in the internal wiring of the button, switch to manual mode. If the switch is switched, the car will start moving on its own without having to press the push button, creating a very dangerous situation. In addition, if an ON failure occurs while the power is turned off, if the power is turned on with the operation mode set to movable -F, the car will start moving automatically when the power is turned on.

[Means to solve the problem]

The present invention is aimed at solving the above problems, and checks whether there is an ON failure when turning on IIT #1 or switching modes, and if there is an ON failure, disables the function of the push button etc. It was designed to do so.

〔Example〕

Embodiments of the present invention will be described with reference to FIGS. 1 to 5. In this example, ta! This is a countermeasure against the ON failure of the rise and fall pushbuttons at the time of input, and Fig. 1 is a diagram showing an overview of the machine/beta control device, Fig. 2 is an explanatory diagram showing the entire program of the device in Fig. 1, 3 to 5 are flowcharts showing the main routines of the program shown in FIG. 2.

In Fig. 1, 1 is an up push button that is provided on the car or car operation panel, etc. and functions in manual mode, 2 is also a down push button, 3 is an automatic/manual changeover switch, 4 is an input interface, and 5 is an output. Interfugos, 6ba R, O
M (Reaa 0rily Memory), 7 is R
,AM (Random Access Memory
), 8 is MPU (Micro Processing
9 is a low speed ascending operation command, 10 is also a descending operation command, 11 is a speed M control device, 12 is a hoisting device, and 13 is a main lobe that connects the car 14 and the counterweight 15.

Next, the operation of this embodiment will be explained.

As shown in Figure 2, when the power is turned on and the program starts 20, 1.1 Ascent and descent pushbuttons 1 and 2 are turned on.
, an input process 21 in which an OFF signal is input, and then an initialization process 22 is executed. In this initialization process 22, as shown in FIG. 3, it is determined whether or not the up pushbutton 1 is already turned on (step 221), and if it is turned on and is 2, that is, an ON failure has occurred. If so, set the disable flag of the up push button 1 (step 222), that is, disable the function of the up push button 1, and if it is OFF, set the disable flag of the up push button 1 (step 223). ,
That is, the function of the upper screen push button 1 is enabled. Next, in the same way as above, for the lower push button 2, determine whether it is ON or not (Step 224). If it is ON, set the invalid flag (Step 225), and if it is OFF, reset the invalid flag. (step 226).

Next 1. The operation mode is determined 24 through an input process 23 for inputting signals from switches, other devices, etc., including the up and down pushbuttons 1.2. In this operation mode determination step 24, as shown in FIG.
41), if it is on the automatic side, set the operation mode to automatic mode 2 (step 242), and if not on the automatic side, set it to manual "Y-i" (step 243); , instead of determining whether the automatic/manual changeover switch 3 is on the automatic side, it may be determined whether the automatic/manual changeover switch 3 is on the manual side.
In addition, the automatic mode in step 242 means not only normal fully automatic operation but also operation other than manual mode, such as controlled operation in the event of an earthquake or fire, or driver-assisted operation.

Next, detection 25 of a travel command is executed. The detection 25 of this running command is performed by first determining whether or not the ha push button 1 is C) FF, as shown in FIG.
), if it is QFF, reset the invalid flag of the up push button 1 (step 252), that is, enable the S function of the up push button 1, and if ') is FF, leave it as is and proceed to the next step 253 Step 253
), if it is OFF, the invalid flag of the 1st push button 2 is reset (step 254), that is, the function of the lower push button 2 is enabled a: t, .

If it is not OFF, the next step 255'c is executed in the state of A':fO,1. Next step 25
In step 5, determine whether the driving mode is 1-movement mode or old mode. The running direction is determined by jl→-.about.1' (step 256), and if it is manual mode, step 25T is executed. In step 251, it is determined whether or not push button 1 is ON. If it is ON, step 258 is executed, and if it is not ON, step 259 is executed. In step 258, it is determined whether the invalid flag of pushbutton 1 is set or not, and if it is set, step 259 is executed.
If it is not set, issue low speed 1 to increase commands 4 (step 260).Step 259.2
61.263 i-no.

) Press the button 2 and go to step 1, step 257.25.
Perform the same processing as 8260. That is, lower pushbutton 2
If it is OFF, execute step 262; if it is ON, execute step 2 if the invalid flag is set.
Step 62 is executed, and if it is not "cented", step 26 is executed.
Execute 3. Step 263 is a step for generating a low-speed descending command, and step 262 is a step for not generating a command.

When the travel command detection 25 is executed, the travel processing 26 is executed.
, door opening/closing command detection 27, door opening/closing processing 282.6. .

(Omitted)...Output processing 29 is executed. In this output processing 29, the results processed in each of the above routines are output to the outside via the output interface 5.

Next, the process returns to the input process 23 again, and the same process as above is repeatedly executed.

Next, the operation of the above embodiment will be explained based on a specific example.

First, before turning on the power, both the up and 1 down buttons 12 should be turned off.
A case will be explained in which the automatic/manual changeover switch 3 is set to the manual side in the FF.

When the power is turned on and the program starts 20, it executes an input process 21 and then an initialization process 22.

Since both the up and down pushbuttons 1.2 are OFF,
In this initialization process 22, in FIG.
21-223-224-226, the invalidation flags of the up and down pushbuttons 1.2 are both reset. Next, through an input process 23, an operation mode determination 24 is executed. Since the automatic/manual changeover switch 3 is on the manual side, steps 241 to 243 in FIG. 4 are executed 2 to set the operation mode to manual. Next, detection 25 of a travel command is executed. Here, as is clear from Figure 5, step 2
51 = 252-・253・2F)4-・25S)-
257, 259, and 262, the travel processing 26 to output processing 29 are executed for 6 or more times in which no travel command is generated, and the process returns to the input processing 23 and repeats the same processing.

In the above state, when top screen pushbutton 1 is turned on, 1
, in FIG. 5, steps 251- and 253 = 2
Execute steps 54-255 to 257 and 258-260 to generate a low-speed ()-4 command, then run process 26 to output process 2
Is 9 real f'? Then, the car 14 is raised one level at a low speed. 14
When F push button 1 is turned OFF, steps 251→252→253→254→255-h257 in FIG.
- Since 259→262 is executed, the ascending command disappears and the car 14 stops.

Also, when the drying push button 2 is turned on, the same process as above is performed.

Next, before the power is turned on, the up push button 1 is ON, the down push button 2 is OFF, the automatic/manual switching switch, and /3 are the manual switching switches.11. If there is, i, 76 ri ζ゛Explanation 4'.

When the power is turned on, the system starts [20], goes through input processing 21, and executes initialization processing 22. At this time, 4. Ma 1, steps 221-222-
・Execute 224-226 L"'tj, set the invalid flag of 1-7 up push button 1, set the invalid flag of lower push button 2 (set). Next, go through manual processing 23. At the legal value 24 of driving 1, -1', steps 241-243 are executed '4' in the same manner as in the above-mentioned embodiment. Detection 25Y" of the next running command is a snap 251→253~÷2!,
i 4◆255←257 replacement 258 (・259~+262
In order to execute the command, no command is issued.

Therefore, even if the lift push button 1 is turned on before the power is turned on, the car 14 will not start moving when the power is turned on, so it is safe.

In the above situation f41, 1 rise pushbutton 1 changes from ON to O.
When FF is restored, step 252 is executed in FIG. 5, so the invalidation flag of the up push button 1 is reset, and the up push button 1 becomes valid.

Also, there is a lower pushbutton 2, or a rise and fall pushbutton 1.
Both of 2 are (1) N K even before the power is turned on.

The same is true when you are at °.

The above is power-on - 1ζ゛1, automatic/manual switching switch.

7. Switch 3 to manual mode. If there is i,,′: jib τI explained, if it is on the automatic side, number 1,′,y
and -1- The lower push buttons 1 and 2 have the function 1, so their explanation will be omitted.

'', as mentioned above, according to the actual failure υ', even if a power failure occurs before the power is turned on using the up and down pushbuttons, or both of the 14 can be prevented from starting to move on its own.

Next, a second embodiment of the present invention will be explained.

This embodiment is a countermeasure against the ON failure of the up and down pushbuttons, which occurs when the operation mode is switched from automatic mode 1 to manual mode.

FIG. 6 is a flowchart of the operation mode determination 24, which corresponds to FIG. 4, and FIG.
This is a flowchart corresponding to FIG. 5, and the rest is the same as the above-mentioned embodiment, except that ON/OFF determination of the up and down pushbuttons 1 and 2 when the power is turned on is not performed. Therefore, the routines 21 and 22 shown in FIG. 2 are not included.

Now, the automatic/manual switch 7-3 is operating on the automatic side, that is, in the automatic mode, and the ``up'' and ``down'' buttons 112
If both are OFF, the program in Figure 2 is
A loop of input processing 23 to operation mode determination 24 - output processing 29 and input processing 23 is repeatedly executed. At this time, in determining the driving mode 24, as shown in FIG. 6, step 301 is first executed in which the previous driving need is stored as the "previous mode." Here, since the loop of input processing 24 to output processing 29 is executed with the automatic/manual changeover switch 3 set to the automatic side, in step 301, the automatic mode is memorized as the previous mode.

Next, in step 302, it is determined that the automatic/manual changeover switch 3 is on the automatic side, and in step 303, the current driving mode is set to automatic mode.

Next, in the travel command detection 25, as shown in FIG. 7, it is determined in step 311 whether or not the current driving mode is manual. If so, since the mode is automatic mode, the running force direction is determined in automatic mode in step 312. Furthermore, run processing 26 to output processing 29 are executed, and input processing 2
3- Return and repeat the same process as above.

Next, when the automatic/manual changeover switch 3 is switched to the manual side in the above state, in the operation mode determination 24, as shown in FIG. 6, the automatic mode is memorized as the previous mode (step 301). It is determined that the automatic/1-motion selector switch 3 is not on the automatic side (step 302), and the current driving mode is set to manual mode (step 304). Next, in the detection 25 of the driving command, as shown in FIG. Step 311-
313-・314-316-318-=320・321
No command is issued to execute the command. Furthermore, driving processing 26
After going through ~output processing 29~input processing 23 and returning to the operation mode determination 24, the manual mode is stored as the previous mode in step 301 of FIG.
Execute 04. Therefore, in FIG. 7, step 31
1-313→322-323-=324-325→31
B-320-321 is executed, no command is issued, and the invalid flags of the up and down pushbuttons 1 and 2 are simply reset in steps 323 and 325, that is, the up and down pushbuttons 12 are reset. It only enables the function. Thereafter, the processes from the traveling process 26 to the output process 29 and from the input process 23 are repeated seven times.

Therefore, even if the automatic/manual changeover switch 3 is switched to the manual side, the functions of the lift and thousand push buttons 1 and 2 are only enabled, and the car 14 does not start moving.

In this state, when one push button 1 is turned on, steps 311-→313-322 to 324-
325→31El-319-32B is executed to generate a low speed raising command to raise the car 14. Then, when the rise pushbutton 1 is turned OFF, step 311-31.3
-322-323-324-325-→318-320
-321 is executed, and the "-ascend command" disappears, so car 1
4 stops. Further, when the lower push button 2 is turned on, the same processing as above is performed.

Next, press the top screen pushbutton 1 while operating in the automatic mode above.
A case in which an N failure occurs will be explained.

During operation in the automatic mode, even if an ON failure occurs in one pushbutton 7, it will not affect the operation itself.1. Here, when the automatic/lower movement selector switch 3 is switched from the automatic side to the manual side for maintenance inspection etc., in Fig. 6, the previous mode is remembered as the automatic mode 7 (step 301), and then the automatic It is determined that the manual changeover switch 7 is not on the automatic side. Step 302) ζ゛.

Step 304 and the like are executed to set the current operation to manual mead.

Next, in FIG. 7, step 311-=313-31
4→315→316-318-31.9・320・32
No command is issued to execute step 1, but step 3
15"--invalid puff of push button 1 is set.

Further, the process returns to the input process 23 through the travel process 26 to the output process 29, and a portrait driving mode determination 24 is executed. This operation mode determination step 24 is the same as described above except that the previous mode is stored as the manual mode in step 301.

Next, in the travel command detection 25, in FIG.
In order to execute steps 18 and 319+320-321, the invalid flag of the crushing push button 2 is reset in step 325, and no command is issued. Furthermore, the processes after the traveling process 26 are executed in the same manner as described above.

Therefore, when an ON failure occurs in the guest pushbutton 1, even if you switch from the automatic mode F' to the manual mode, the invalid flag of the up pushbutton 1 will only be turned off, and the car 1
4 will never start moving.

In the above state, the rise pushbutton 1 changes from ON to OFF.
In FIG. 7, steps 311-31
3-322→323→32L-325→318～→32
0◆321 is executed, the invalid flag of the up push button 1 is reset, and the up push button 1 becomes valid.

In addition, the lower push button 2, or the rise and lower push button 1,
The case where an ON failure occurs in both of 2 and 7 is also the same as in L.

As described above, according to this second embodiment, even if an ON failure occurs in one or both of the up and down pushbuttons 1.2 while operating in the automatic mode, the automatic mode can be switched to the manual mode. The invalid flag of the push button is only set, and the car 14 does not start moving.

Above, countermeasures for the ON failure of the up and 'F lower push buttons, C at power-on, and ON failure countermeasures at mode switching have been shown separately. Also, countermeasures against the ON failure of the land push button 1.2 can be realized as follows.

In this third embodiment, FIG. 3 is a flowchart of the initialization process 22 in FIG. 2, FIG. 6 is a flowchart of the operation mode determination 24, and FIG. 7 is a flowchart of the driving command detection 25. use.

First, a case will be described in which the power is turned on with the rise and F pushbuttons 1.2 in the OFF state and the automatic/manual changeover switch 3 in the manual side. Program start 20 - input processing 2
3 is the same as in the first embodiment described above. Next, in the operation mode determination 24, in FIG.
- Execute 302 → 304.

At this time, after tlffilff, step 301
Since there is no previous mode in ζ, the previous mode is assumed to be indeterminate (2.
313-314-316-318-320- and 321 are executed, and no command is issued.

Next, when the loop from the traveling process 26 is executed and the operation mode determination 24 is performed again at step 30, the previous mode F'4 is determined to be the manual mode at step 301 in FIG.

From then on, press 1 and press button 1.24 ON.

The process of turning off and lowering the car 14 is the same as in the second embodiment described above.

Next, raise and push buttons 1 and 2 are turned OFF.

Assume that the power is turned on with the automatic/manual selector switch 3 set to the automatic side. The processing from program start 20 to input processing 23 is the same as above, and since the previous mode in step 301 of FIG. The rest is the same as the second embodiment described above. Therefore, when operating in automatic mode, one or both of the up and down pushbuttons 1.2 are activated.
N Even if a failure occurs, when the automatic mode is switched to the manual mode, the invalid flag of the pushbutton is set to 7, and the basket 14 will not move and start hot water.

Also, when turning on the power, press L) f and up button 1, 2.
Even if there is an ON failure in one or both of the
As in the case of the first embodiment, in the initialization process 22 shown in A1 in FIG.
does not move on its own.

In each of the above embodiments, the ON failure of the upper shoulder push button 1 and the ON failure of the lower push button 2 are handled separately, but an ON failure occurs in either the up or down push button 1 or 2. You can then disable both pushbuttons. Furthermore, in the above explanation, the upper and lower pushbuttons l and 2
Even if an ON failure occurs, the function is enabled once it is turned OFF7, but when an ON failure occurs, the function is activated.
The pushbutton may remain disabled until the tm is shut off. In addition, if the up and down pushbuttons 1.2 that function in manual mode also serve as floor call registration buttons, etc. used in automatic mode, when the invalid flag for the up and down pushbuttons is set, You may disable only the function of the button in manual mode, i.e., the function to perform low speed hJl and descent, or you may disable all functions of the button, i.e., the function in manual mode and the function in automatic mode. You can also do it.

Additionally, the present invention provides manual mode up and down pushbuttons 11.
The present invention can be applied not only to the automatic return type switch but also to other pushbuttons, such as a call registration button in automatic mode, a door opening/closing button, or a lever switch used during driver-assisted driving. Further, when an ON failure occurs, not only the pushbutton is disabled, but also an alarm or an alarm message may be issued.

〔Effect of the invention〕

As explained above, according to the present invention, even if an ON failure occurs in the automatic reset type switch, the car is prevented from starting to move automatically when the power is turned on or when switching modes, thereby preventing accidents from occurring. can do.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention. A diagram showing an overview of the dual-control device;
Fig. 2 is an explanatory diagram showing the entire program of the device shown in Fig. 1, Figs. 3 to 5 are flowcharts showing the main routines of the program shown in Fig. FIG. 7 is a diagram showing another embodiment of the invention. 1... J6 lift push button used in manual mode 2...
Lower pushbutton used in manual mode 3...Auto/manual changeover switch 4...Input interface 5...Output interface 6...ROM 7...RAM 8...MPU 9...Low speed Ascending operation command 10...Low speed descending operation command 11...Speed control m device patent applicant Fujichik Co., Ltd. Sanyozu ￥ Zukozu

Claims (4)

[Claims] (1) An elevator having an automatically reset type switch that is manually operated is characterized by having a means for disabling the function of the switch if the switch is ON from the time the power is turned on. Elevator safety equipment. (2) In an elevator with an automatically reset switch that is manually operated, when the elevator operation mode switches from an operation mode in which the switch does not function to an operation mode in which the switch functions,
A safety device for an elevator, comprising means for disabling the function of the switch if the switch is turned on. (3) The elevator according to claim 1 or 2, further comprising means for enabling the function of the switch when the switch is turned off while the elevator is operated in an operation mode in which the switch functions. 2. The elevator safety device described in 2. (4) The elevator safety device according to any one of claims 1 to 3, further comprising means for issuing an alarm when the function of the switch is disabled.