JP2589025B2 - Automatic door pinch accident prevention system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for preventing an automatic door from being pinched by using a mat switch (and an auxiliary switch such as a light switch) as a start switch.

[0002]

2. Description of the Related Art An automatic door using a mat switch or a light switch as an activation switch is such that a person steps on a mat switch 1 or 2 buried under the floor in a normal operation or crosses an entrance as shown in FIG. The door 5 is automatically opened / closed by setting a predetermined door open / hold time by a timer based on a signal output when the light beam switch 3 or 4 provided across the light switch 3 or 4 is crossed. FIG. 13A shows a plan view, and FIG. 13B shows a front view.

[0003]

Although there is usually no particular problem even with such a fixed time setting, in the case of a slow-moving person such as an elderly person, an infant or a disabled person (hereinafter referred to as a weak person). When the mat switches 1 and 2 are turned on and the door 5 is opened and before the door 5 passes through the doorway, the open / hold timer expires, and there is a risk that the door 5 will be pinched. For this reason, the conventional automatic door requires a longer open holding time for the weak, and in this case, the door remains open more than necessary after passing through the entrance for the passage of people who perform normal operations. become.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to safely and minimize the necessary number of doors according to the operation until a person steps on a mat, opens a door, and passes through an entrance. It is an object of the present invention to provide a system for holding open. In other words, it is intended to provide a relatively short opening time to a normal person and a relatively long opening time to a weak person such as a child, and to carry out safety management for the weak person.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a sensor output from a mat switch provided at an entrance of an automatic door and an auxiliary switch provided in a dead zone of the mat switch at the center of the automatic door. The present invention relates to an automatic door that automatically opens and closes a door by processing a signal. The object of the present invention is to operate a safety timer for a predetermined safety setting period from the time when a mat switch that first detects a pedestrian is turned on, and If the pedestrian is detected within the predetermined safety setting period, the automatic door is closed for a door opening and holding time required for a normal walking operation, and the auxiliary switch is closed within the predetermined safety setting period. If the pedestrian is not detected, the automatic door is kept open until the auxiliary switch is turned on. Sandwiched with automatic doors so as to close the second safety setting period after the automatic door that requires the walking movement is achieved by accident prevention systems.

[0006]

The walking operation is identified based on the length of each start switch signal, the two-shot operation, the interrelationship between the signals, and the like, and the corresponding safety timer is automatically operated. In particular, it aims to prevent the pinch accidents against the weak.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The arrangement of a start switch used in the present invention is shown in FIG.
The conventional automatic door switch arrangement shown in FIG. 3 can be used as it is. Here, the mat switch 1, the mat switch 2, the light switch 3, and the light switch 4 are assumed to be MatA, MatB, RayA, and RayB, respectively. FIGS. 8 to 12 show flowcharts for processing signals and information from these start switches by a computer or the like and controlling door opening and closing. The operation of each part of the path will be described in detail with reference to the time charts of FIGS.

FIG. 1 is a diagram for explaining a two-shot operation. When a reflected light switch or the like senses a person in a normal operation in a start switch, a start signal is given by one ON signal as shown in FIG. Usually, the signal is issued. However, in the case of a slow operation, the start signal is not generated once, but a second ON signal may be generated as shown in FIG. This operation is called a two-shot operation.

FIG. 2 shows how to detect a weak person by detecting a two-shot operation. As shown in FIG.
N, then, when MatA is turned off, the hold timer and the MatA two-shot timer start (FIGS. (C) and (B)), and the same as when MatA is turned on until the MatA two-shot timer becomes larger than the setting A. Works. That is, this operation is performed by the mat switch OF
Chattering at F will be taken. Next, the second O
If the two-shot timer of MatA, which was started by turning on and off the first MatA at the time of the N signal at the rising time, is smaller than the setting B, the operation is regarded as a weak operation.
The safety timer is started when atA is turned off (FIG. 2E). The above operation is the same for MatB.

FIG. 3 shows how a weak person is judged by a slow motion. Slow operation means that when a rubber mat switch or electronic mat switch is used as a start switch, the mat switch is normally pressed for only about 1 second to step on the mat and pass through the door, but if the action is slow, the mat switch must be pressed. Paying attention to the fact that the pressing time becomes long, if the time is long, it is one of the weak person determinations. The operation is as follows. Turning on MatA (FIG. 3A) starts the slow A timer (FIG. 3B).
When the time of the Mat A two-shot timer becomes larger than the setting A and the slow A timer time is longer than the setting C, the safety flag is set (FIG. (D)). If smaller, the safety flag is not set. Then, the slow A timer is started (reset). This operation is the same for MatB.

FIG. 4 is a diagram for explaining the operation of the safety timer. The safety timer and the safety operation timer are started by the safety flag set in FIGS. 2 and 3, and the safety flag is cleared. Next, when the safety flag is set when the safety operation timer is not END, the safety timer is reset as the safety second timer, and the safety timer and the safety operation timer are started. If the safety operation timer is E
The safety timer is also set as the safety second timer and the safety timer is started when RayA is turned ON when ND is not performed. Then, when the safety operation timer has ended, the safety timer is ended. That is, the safety timer started by the two-shot operation or the like becomes the safety second timer by RayA. Here, the safety timer> the safety second timer.

FIGS. 5 and 6 are diagrams for explaining the operation of RayA and RayB. In FIG. 5, when RayA is turned ON, if the safe operation time is not END, the safety timer is set as the second safety timer and the safety timer is started. At the same time, the hold timer and the infant determination timer are started, and the infant safety timer is ended. That is, if MatA, MatB, etc. are determined to be weak and start the safety timer, the safety timer becomes the second safety timer by turning on RayA.

Next, as shown in FIG. 6, when RayB is turned ON, an infant safety timer is started. Also, its RayB
When the timer is turned off, the hold timer is started.
If the infant determination timer started at yA is not END, the infant safety timer does not start.

The above operation is performed when the door is in the open state or in the open / close operation.
The operation by ayB is different. As shown in FIG. 7, the operation of the child safety timer, the safety timer, and the hold timer is ended, and MatA, MatB, RayA, Ray are performed.
When B is turned off, the safe operation timer, the infant determination timer, and the operation end A timer are ENDed, the safety second timer flag is reset, the operation end B timer is started, and the door enters a closed state. If RayB is turned on before the operation end B timer ends, the door starts to open, and if the operation end B timer ends, RayB turns on.
Turns on, the operation end A timer is started, and the
When B is turned off, MatA, MatB, and RayA are not monitored until the operation end A timer reaches END, and the opening of the door is prohibited. This is similar to a baby walking or entering from a switch dead zone beside a door.
Turn on RayB without turning on A, MatB and RayA
If it does, close it so that it is not fanned by the door or pulled into the door pocket.

FIGS. 8 to 12 are flowcharts showing an operation example of the present invention. It is determined whether or not MatA is ON (step S1). If it is ON, it is determined whether or not MatA is rising. (Step S2) If rising, M
It is determined whether or not the atA two-shot timer is larger than the setting A (step S3). If the MatA two-shot timer is larger than the setting A, it is further determined whether the MatA two-shot timer is smaller than the setting B (step S4), and if smaller, a safety flag is set (step S5). After the safety flag is set, or when the rising is not performed in step S2, Ma is determined in step S3.
If the tA two-shot timer is less than or equal to the setting A, and if the MatA two-shot timer is more than the setting B in step S4, the MatA two-shot timer is set (step S6). If MatA is OFF (step S1), it is determined whether the MatA two-shot timer is smaller than setting A (step S8). If so, the process skips to step S7; It is determined whether the timer is greater than the setting C (step S10), and if so, the safety flag is set (step S11). After that, or the slow A timer is set to C
In the following cases, the slow A timer is started (step S12), and it is determined whether or not the safety flag is set (step S13). If it is set, it is determined whether or not the safety operation timer is END (step S13). Step S14), EN
If not, set the safety second timer (step S
15). Thereafter, or when the safety operation timer is END, the safety timer is started (step S16), the safety operation timer is started (step S17), and the safety flag is cleared (step S18).

Thereafter, or if the safety flag is not set in step S13, it is determined whether or not MatB is ON (step S20), and the same processing as in FIG. 8 is performed. That is, FIG. 9 shows MatB, Ma
It shows the operations of the tB two-shot timer and the slow B timer, and is the same as FIG. 8 showing the operations of the MatA, the MatA two-shot timer, and the slow A timer.

Thereafter, the operation shifts to the operation of FIG. 10. First, it is determined whether or not the safety operation timer is END (step S40). If it is END, the safety timer is set to END (step S41). 2 The timer is reset (step S42), and thereafter, it is determined whether or not RayA is ON (step S43). Step S4 above
If 0 and the safety operation timer is not END, it is determined whether or not RayA is ON (step S44), and if ON, the safety timer is started (step S45),
The safety second timer is set (step S46). After that, or if RayA is ON in step S43, the hold timer is started (step S4).
7) Then, the infant determination timer is started (step S48), and the infant safety timer is set to END (step S49). Thereafter, or if RayA is OFF in steps S43 and S44, it is determined whether or not RayB is ON (step S50). If RayB is ON, the hold timer is started (step S51), and the infant determination timer Is END or not (step S5).
2) If END, start the infant safety timer (step S53). After that, or in step S50
If RayB is OFF, or if the infant determination timer is not END in step S52, it is determined whether the safety timer is END (step S54).
If it is not D, it is determined whether or not the second safety timer is set (step S55). If the safety second timer is set, it is determined whether the safety timer is larger than the safety second timer (step S58). If not, it is determined whether the safety timer is larger than the safety first timer. A determination is made (step S56), and the above step S5
6. If the safety timer is larger than the first safety timer and the second safety timer in S58, the safety timer is set to END (step S57). Otherwise, or if the safety timer is END in step S54, FIG. Move to the operation of.

First, it is determined whether or not the child safety timer is set to END (step S60). If it is END, it is determined whether or not the safety timer is set to END (step S6).
1) If END, it is determined whether or not the hold timer is END (step S62). If END, Ma is determined.
It is determined whether or not tA is OFF (step S6).
3) If it is OFF, it is determined whether or not MatB is OFF (step S64).
It is determined whether or not A is OFF (step S65),
If it is OFF, it is determined whether or not RayB is OFF (step S66). Then, the above steps S60-
If it is not END in S62, the above steps S63 to S6
If it is ON in step 6, the output is turned ON (step S6).
7), and return to step S1 in FIG. If RayB is OFF in step S66, the safety operation timer is set to END (step S70).
The timer is reset (step S71), the infant determination timer is END (step S72), and the operation end A timer is EN.
D (step S73), the operation end B timer is started (step S74), and the output is turned off (step S7).
5).

Thereafter, the operation shifts to the operation of FIG.
It is determined whether or not tA is ON (step S80),
If it is OFF, it is determined whether MatB is ON (step S81). If it is OFF, it is determined whether RayA is ON (step S82).
It is determined whether or not yB is ON (step S8)
3). If RayB is ON, it is determined whether or not the operation end B timer is END (step S84).
If it is END, the operation end A timer is started (step S90), and it is determined whether or not the operation end A timer is END (step S91). If it is END, the process returns to step S80. If it is not END, Ra is returned.
It is determined whether or not yB is ON (step S92),
If it is OFF, the process returns to step S91, and it is ON.
If so, the process returns to step S90. If the timer is ON in steps S80 to S82, and if the operation end B timer is not END in step S84, the slow A timer and the slow B timer are started (steps S85 and S86), and the process returns to step S1 in FIG. I do. In the above embodiment, the light switch is used as the auxiliary switch, but an ultrasonic switch or the like may be used.

[0020]

As described above, according to the method of the present invention, not only the weakness is judged based on the ON time of the start switch, but also the walking based on the characteristics of the start switch signal and the relative relationship between the signals. The operation can be identified, and the door can be safely held open according to the situation.

[Brief description of the drawings]

FIG. 1 is a time chart of a start switch signal.

FIG. 2 is a time chart showing an operation example of the present invention when a weak person is determined from a two-shot operation.

FIG. 3 is a time chart illustrating an operation example of the present invention when a weak person is determined by a slow motion.

FIG. 4 is a time chart illustrating the operation of a safety timer.

FIG. 5 is a time chart for explaining the operation of RayA.

FIG. 6 is a time chart illustrating the operation of RayB.

FIG. 7 is a time chart for explaining the operation of RayB when the door is closed.

FIG. 8 is a flowchart illustrating an example of signal processing according to the present invention.

FIG. 9 is a flowchart illustrating an example of signal processing according to the present invention.

FIG. 10 is a flowchart illustrating an example of signal processing according to the present invention.

FIG. 11 is a flowchart illustrating an example of signal processing according to the present invention.

FIG. 12 is a flowchart illustrating an example of signal processing according to the present invention.

FIG. 13 is a plan view and a front view showing an outline of an automatic door using a conventional mat switch and light switch.

[Explanation of symbols]

 1 mat switch (MatA) 2 mat switch (MatB) 3 ray switch (RayA) 4 ray switch (RayB) 5 door

Claims (1)

(57) [Claims] An automatic door is processed by processing sensor signals output from mat switches provided at entrances and exits of an automatic door and auxiliary switches provided in a dead zone of these mat switches at the center of the automatic door. In the automatic door that opens and closes, the O of the mat switch that first detects the pedestrian
From the time point N, the safety timer is operated for a predetermined safety setting period,
When the auxiliary switch detects the pedestrian within the predetermined safety setting period, closes the automatic door for an open holding time of the door required for a normal walking operation, and within the predetermined safety setting period. If the auxiliary switch does not detect the pedestrian, the automatic door is kept open until the auxiliary switch is turned on, and the auxiliary switch is turned on.
An automatic door pinch accident prevention system, wherein the automatic door is closed after a second safety setting period required for the walking motion of the weak.