JP2005349972A - Safety control device of vehicular door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety control device of a vehicular door, superior in operational reliability and stability, by extremely reducing fear of failure even if an opening-closing frequency of a door is high, by largely shortening processing time and speed until its release from detection of an opening-closing abnormal situation of the vehicular door. <P>SOLUTION: A pressure sensor is added to a door end part of the slidingly opening-closing vehicular door for converting pressure into an electric signal by detecting the pressure of an obstacle contacting with the door. A transmission means electrically connected to the pressure sensor and converting its detecting signal into a light signal, is arranged in a door side part near this pressure sensor. A door opening-closing control means is arranged in a vehicle side part for sending a control command to a separately arranged door opening-closing driving device on the basis of the electric signal by converting the light signal into the electric signal by receiving the light signal sent from its transmission means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention detects whether a passenger door that opens and closes in a vehicle for mass transportation of passengers such as trains, trains, and buses is normally opened and closed. The present invention relates to a vehicle door safety control device that detects a state and controls a door opening / closing drive device in a predetermined manner to cancel an abnormal situation so as to achieve safe driving of the vehicle.
The present invention can greatly reduce the processing time and speed from the detection of an abnormal situation to the cancellation thereof by devising the transmission / reception means for the detection signal of the opening / closing abnormality in the passenger door. It relates to a safety control device for a vehicle door, which is extremely unlikely to break down even if it is high and has excellent operation reliability and stability.

  In vehicles intended for mass transportation of passengers such as trains, trains, and buses, it is extremely dangerous to drive with a part of the human body or foreign objects such as clothes or bags in between the doors that open and close sliding. It is. Various means have been tried in the past as means for detecting the occurrence of an abnormal situation and canceling it when such a door is not normally opened and closed, as shown in FIG. 7 and FIG. Things are an example.

FIG. 7 shows that the switches 3 and 3 ′ are brought into contact with and separated from the projections 2 and 2 ′ provided on the double sliding doors 1 and 1 ′ and the switches 3 and 3 ′ provided at a predetermined position on the vehicle side. The door 1 or 1 'opening / closing abnormality is detected by operating either on or off. That is, for example, the switches 3 and 3 'are off when the door is open as shown in FIG. 11A, and the doors 1 and 1' are normally closed as shown in FIG. When the switch 3 or 3 'is turned on when the object 2 or 2' and the switch 3 or 3 'come into contact with each other at a predetermined position, a foreign matter is caught between the doors and a certain time elapses regardless of the door closing command. Even if the switches 3 and 3 'are not turned on, it is detected that an abnormal situation has occurred, and the abnormal situation is canceled by opening the door via the door opening / closing drive device.
However, in this case, it takes time to detect an abnormal situation of door opening and closing, and there is a problem that the processing speed for releasing it is slow.

The one shown in FIG. 8 shortens the detection time by detecting a door opening / closing abnormality with a pressure sensor. In this case, pressure sensors 4 and 4 'are disposed at the door ends of the double sliding doors 1 and 1'. As shown in FIG. 9, the pressure sensors 4 and 4 'have a structure in which an air chamber having electrical contacts c and d is connected to a synthetic rubber pipe, and an obstacle is in contact with the synthetic rubber pipe. When the pressure is applied, the air pressure is sent to the air chamber as shown in the right sectional view (abnormal state), the electrical contacts c and d are closed, and the pressure by the pressure is converted into an electrical signal. Obstacle contact is detected. Therefore, when a foreign object comes into contact with the pressure sensors 4 and 4 'disposed on the doors 1 and 1' and pressure is applied, the pressure is converted into an electrical signal, and an opening / closing abnormality of the door is detected. It is electrically connected to the pressure sensor and sent to the door opening / closing control means 7 and 7 'via the transmission means 5 and 5' disposed on the door side and the connection cables 6 and 6 '. The abnormal situation is canceled by opening the doors 1 and 1 'via the door opening / closing drive device according to the command.
However, in this case, connection cables 6 and 6 'for signal transmission are provided between the transmission means 5 and 5' disposed on the door side and the control means 7 and 7 'disposed on the vehicle side. Because the doors of vehicles that are installed and used for mass transportation of passengers are very frequently opened and closed, the connection cables 6 and 6 'are liable to break down with repeated use, so that the operation is reliable and stable. There is a drawback that there is a lack of gender.

Some use a photocoupler for transmission of a detection signal of door opening / closing abnormality (see Patent Document 1). In the claims of Patent Document 1, the term “photoelectric conversion element 3” connected in parallel to each door switch 2 is used, and the signal of the open / closed state of the door detected by this photoelectric conversion element 3 is used as a logic circuit 8. In this case, the door opening / closing drive circuit 7 is compared with the signal to detect the door opening / closing abnormality. However, in the detailed description of the invention, only the use of a photocoupler is disclosed as a specific one for transmitting a signal indicating whether the door is open or closed, and the use of the term photoelectric conversion element is inappropriate. . Therefore, in Patent Document 1, transmission / reception of a signal indicating whether the door is open or closed is based on an electrical signal, and is not based on an optical space transmission system using a light emitting element and a light receiving element. Therefore, in Patent Document 1, it is necessary to install electrical wiring for signal transmission / reception, and therefore this also has the same difficulty as the conventional example using a connection cable for signal transmission.
Japanese Patent Laid-Open No. 5-8723

  The present invention has been made in order to solve the various problems of the prior art, and in particular, in view of the peculiarity that the door opening and closing frequency is extremely high in vehicles intended for mass transportation of passengers. By devising the means for transmitting and receiving the detection signal of the abnormal opening / closing in the system, the processing time and speed from the detection of the abnormal situation to its cancellation can be greatly shortened. The object of the present invention is to provide a vehicle door safety control device that is extremely low in operation and excellent in operation reliability and stability.

  In order to achieve the above object or problem, the present invention employs the following means.

  In the invention according to claim 1, in a vehicle intended for mass transportation of passengers such as trains, trains, buses, etc., the pressure of an obstacle contacting the door is detected at the door end portion of the sliding door that opens and closes. And a pressure sensor for converting the signal into an electric signal, and a transmission means for connecting the pressure sensor to the pressure sensor and converting the detection signal into an optical signal and transmitting the signal at the door side near the pressure sensor. The door opening / closing control means for receiving the optical signal sent from the transmitting means and converting it into an electrical signal and sending a control command to a separately provided door opening / closing drive device based on the light signal sent from the transmission means Features.

  In the invention according to claim 2, in a vehicle intended for mass transportation of passengers such as trains, trains, buses, etc., the pressure of an obstacle contacting the door is detected at each door portion of the double door that opens and closes. Each of the pressure sensors for converting to an electric signal is provided, and a transmitting means for electrically connecting to the pressure sensor and converting the detected signal into an optical signal and transmitting it is provided at each door side portion close to each pressure sensor. And a door opening / closing drive provided separately on the vehicle side corresponding to each transmission means on each door side, receiving the optical signal sent from each transmission means and converting it to an electrical signal. The door opening / closing control means for sending a control command to the apparatus is provided.

  In the invention according to claim 3, the transmission means for transmitting the optical signal respectively disposed on the double-open door that opens and closes the slide, and the vehicle-side portion corresponding to the transmission means on each door side are disposed respectively. In two sets of optical signal transmission / reception systems consisting of door opening / closing control means that receives optical signals from each transmission means and sends control commands to a door opening / closing drive device provided separately, optical signals of different wavelengths were used. The other structure is the same as that of the invention according to claim 2.

  In the invention according to claim 4, in a vehicle intended for mass transportation of passengers such as trains, trains, buses, etc., the pressure of an obstacle contacting the door is detected at each door portion of the double door that opens and closes. Each of the pressure sensors for converting to an electric signal is provided, and a transmitting means for electrically connecting to the pressure sensor and converting the detected signal into an optical signal and transmitting it is provided at each door side portion close to each pressure sensor. In addition, an optical signal of the same wavelength sent from each transmission means is received and converted into an electrical signal at a portion on the vehicle side corresponding to the transmission means on either one of the doors. A single door opening / closing control means for sending a control command to the door opening / closing drive device is provided.

  In the invention which concerns on Claim 5, in the vehicle aiming at mass transportation of passengers, such as a train, a train, and a bus, the pressure of the obstacle which contacted the door is detected in each door end part of the double door which opens and closes. Each of the pressure sensors for converting to an electric signal is provided, and a transmitting means for electrically connecting to the pressure sensor and converting the detected signal into an optical signal and transmitting it is provided at each door side portion close to each pressure sensor. In addition, the vehicle side portion corresponding to either one of the door side transmission means receives optical signals of different wavelengths sent from the respective transmission means, converts them into electric signals, and separately arranges them based on the received signals. A door opening / closing control means for sending a control command to the door opening / closing drive apparatus is provided.

  Since the present invention has the above-described configuration, it solves the above-mentioned problems of the prior art and has the following specific effects.

In the invention according to claims 1 to 5, a pressure sensor for detecting the pressure of an obstacle in contact with the door and converting it into an electric signal is disposed at the door tip portion of the door for getting on and off which slides open and close, As a means for transmitting and receiving the detection signal from the pressure sensor in order to cancel the abnormal situation, an optical space transmission system that converts the detection signal of the pressure sensor into an optical signal and transmits and receives it as an optical signal is used. The processing time and speed from detection to release thereof can be greatly reduced, and connection cables and electrical wiring are not required for signal transmission, and operation reliability and stability are excellent.
In vehicles intended for mass transportation of passengers such as trains, trains, buses, etc., the frequency of opening and closing of the entrance door is extremely high. Therefore, transmission means provided on the door to be opened and received and reception provided on the stationary vehicle side. The ability to eliminate the need for signal transmission connection cables and electrical wiring to connect between the control means and the control means eliminates problems due to the occurrence of the failure and increases operational reliability and stability. It is extremely useful.

  And since these optical signal transmission / reception devices are often installed so as not to be exposed to the outside from the viewpoint of appearance and passenger safety, light used for optical space transmission leaks to the outside. Without disturbing other optical devices. On the contrary, since it is hardly affected by an external optical device, safe and stable operation can be obtained.

  Further, the signal transmission / reception means using the optical space transmission method using the optical signal is extremely less likely to be adversely affected by the mutual interference of the external electric device than the space transmission method using the radio wave. The price of parts is generally lower than that of a space transmission method using radio waves.

  In the invention according to claim 3, in the two transmission / reception systems of the respective transmission means arranged on each side of the double door and the corresponding control means arranged on the vehicle side, the wavelengths different from each other. Therefore, the possibility of mutual interference in the two transmission / reception systems can be reliably avoided, which is more preferable in terms of operational reliability and stability.

  In the invention according to claim 4, an optical signal having the same wavelength is transmitted from each transmission means arranged on each door side of the double door, and the optical signal from each transmission means corresponds to one door side. Since reception is made by a single control means arranged on the vehicle side, it is preferable to implement when there is a restriction that only one control means can be installed due to the structure of the vehicle.

  In the invention which concerns on Claim 5, each control means 10 and 10 'which receives the optical signal from each transmission means 9 and 9' provided in each door of double opening on the structure of a vehicle is provided on either door side. This corresponds to the case where there is a restriction that can be disposed only in the part on the vehicle side corresponding to the above, and as in the case of claim 3, the optical signals transmitted from the respective transmission means should have different wavelengths. As a result, the detection signals individually detected by the pressure sensors provided at the doors with double doors are individually processed by the respective control means, and the stability of the operation can be ensured.

In vehicles for the purpose of mass transportation of passengers such as trains, trains, buses, etc., from the viewpoint of safe driving, the occurrence of an abnormal situation such as an obstacle coming into contact with the passenger door is promptly detected and quickly and reliably There is a demand for the realization of a safety control device that can eliminate the abnormal situation, and because of the particularity that the frequency of opening and closing the door is extremely high, there is no possibility of failure in the operation of the device, and it is excellent in reliability and stability. Requested.
In the present invention, a pressure sensor that detects the pressure of an obstacle contacting the door and converts it into an electric signal is attached to each door portion of the double door that opens and closes. Each part is provided with transmission means that is electrically connected to the pressure sensor and converts the detection signal into an optical signal and transmits it, and the vehicle side part corresponding to each transmission means on each door side A door opening / closing control means for receiving an optical signal sent from each transmission means, converting it into an electrical signal, and sending a control command to a door opening / closing drive device provided separately based on the optical signal is provided. In each of the two sets of optical signal transmission / reception systems composed of the means, the above-described requirements can be satisfied by forming a control device using optical signals of different wavelengths.

FIG. 1 shows Example 1 of the present invention.
Pressure sensors 4 and 4 'for detecting the pressure of the obstacle 8 in contact with the door and converting it into an electric signal are respectively attached to the door ends of the double doors 1 and 1' that open and close the slide, and are close to the pressure sensors. Transmitting means 9 and 9 'for electrically connecting to the pressure sensor and converting the detection signal into an optical signal and transmitting the same are disposed at each door side.
A door opening / closing drive device provided on the vehicle side corresponding to each transmission means 9 and 9 'on each door side receives an optical signal sent from each transmission means, converts it into an electric signal, and is separately arranged based on the received signal. Door opening / closing control means 10 and 10 'for sending a control command to are respectively provided.

  As the pressure sensors 4 and 4 ′, those having the structure shown in FIG. 9 described above or others are used.

The specific configurations of the transmission means 9, 9 'and the door opening / closing control means 10, 10' are, for example, those shown in FIG.
In FIG. 6, 12 is a pressure sensor (corresponding to 4, 4 '), 13 is a transmission means (corresponding to 9, 9'), and 14 is a door opening / closing control means (corresponding to 10, 10 ').
The transmission means 13 electrically connected to the pressure sensor 12 includes a one-shot timer, a one-chip microcomputer, an amplifier (AMP), and a light emitting diode (LED), and an electric signal of the pressure detected by the pressure sensor 12 is obtained. It converts into an optical signal and transmits to the control means 14 via space. A battery is used as the power source of the transmission means 13.
The control means 14 comprises an optical transistor, an amplifier (AMP), a one-chip microcomputer, an amplifier (AMP), and a control signal generator. The control means 14 receives an optical signal from the transmission means 13 and converts it into an electrical signal. Based on this, a control signal is sent to a door opening / closing drive device provided separately to control it. As this power source, either an external power source as shown in the figure or an internal power source such as a battery may be used.

  As light, generally, infrared rays, visible light rays, and ultraviolet rays over a considerable range of wavelength bands are used, each having its own characteristics and being properly used according to various applications. In the case of optical space transmission in the present invention, infrared rays are most easily used, and in particular, those in the short wavelength band near 850 nm and those in the long wavelength band near 1300 nm are widely used.

FIG. 2 shows a second embodiment of the present invention.
In this case, in the structure shown in the first embodiment, the optical signals having different wavelengths between the transmission / reception means by the two sets of optical signals composed of the transmission means 9, the control means 10, and the transmission means 9 ′ and the control means 10 ′. Transmission / reception is performed using (λ1 and λ2). For example, the infrared rays in the short wavelength band near 850 nm and the long wavelength band near 1300 nm described above are used as the optical signals of λ1 and λ2.
As a result, problems due to mutual interference between the two transmission / reception means that may occur due to the control method, vehicle structure, and other constraints can be completely avoided, further improving the reliability and stability of operation. Can be expected.

FIG. 3 shows Example 3 of the present invention.
In this case, the vehicle entry / exit door is implemented as a sliding door that is open to the wall surface 11. A pressure sensor 4 is attached to the door end portion of the door 1, and a transmission means 9 for converting the electrical signal of the pressure detected by the pressure sensor into an optical signal and transmitting it is disposed on the door portion in the vicinity thereof. A control means 10 is provided for receiving an optical signal transmitted to the vehicle side portion, converting it into an electrical signal, and sending a control signal to a door opening / closing drive device provided separately based on the received optical signal.

FIG. 4 shows Example 4 of the present invention.
In this case, it corresponds to the case where there is a restriction such that the control means for receiving the optical signal and controlling the door opening / closing drive device can be installed only at one place due to the structure of the vehicle, and it is arranged at each double door. The optical signal transmitted from the transmission means 9, 9 'is received by a single control means 10 provided on the vehicle side corresponding to one door side, and the wavelength of the optical signal is the same. Is used.

FIG. 5 shows Example 5 of the present invention.
In this case, the vehicle corresponding to one of the doors of each of the control means 10 and 10 'for receiving an optical signal from each of the transmission means 9 and 9' provided on each double door due to the structure of the vehicle. This corresponds to the case where there is a restriction that can be arranged only on the side portion, and as in the second embodiment, optical signals having different wavelengths (λ1, λ2) are used as the optical signals transmitted from the respective transmitting means. As a result, the detection signals individually detected by the pressure sensors provided in the double doors are individually processed by the respective control means so as to ensure the stability of the operation.

  The pressure sensor used in the above embodiment is not limited to the one shown in FIG. 9, but the present invention can be implemented even if another type or structure is used. However, the pressure sensor of FIG. 9 is considered to be one of the most suitable sensors for the present invention among existing pressure sensors.

It is a perspective view which shows Example 1 of this invention. FIG. 6 is a perspective view showing Example 2 of the present invention. It is a perspective view which shows Example 3 of this invention. It is a perspective view which shows Example 4 of this invention. It is a perspective view which shows Example 5 of this invention. It is a block diagram which shows an example of a structure of the pressure sensor of this invention, a transmission means, and a control means, and a mutual relationship. It is a perspective view which shows an example of a prior art, (a) is at the time of door opening, (b) is a thing at the time of door closing. It is a perspective view which shows the other example of a prior art. It is structure and operation | movement explanatory drawing of a pressure sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Vehicle entrance / exit door 2, 2' Protrusion 3, 3 'Switch 4, 4' Pressure sensor 5, 5 'Transmission means 6, 6' Connection cable 7, 7 'Door opening / closing control means 8 Obstacle 9 , 9 'transmission means 10, 10' control means 11 wall 12 pressure sensor 13 transmission means 14 control means

Claims (5)

  In vehicles intended for mass transportation of passengers such as trains, trains, buses, etc., a pressure sensor that detects the pressure of an obstacle that touches the door and converts it into an electrical signal at the door end of the sliding door that opens and closes. A transmission means is provided on the door side close to the pressure sensor and is electrically connected to the pressure sensor, and the detection signal is converted into an optical signal and transmitted, and the transmission is transmitted to the vehicle side. The door door opening / closing control means for receiving the optical signal sent from the means and converting it into an electric signal and sending a control command to the door opening / closing drive device provided separately based on the light signal is provided. apparatus.   In vehicles intended for mass transportation of passengers such as trains, trains, buses, etc., pressure sensors that detect the pressure of obstacles that touch the door and convert them into electrical signals are respectively provided at the door ends of the double doors that slide open and close. In addition, transmission means for electrically connecting to the pressure sensor, converting the detection signal into an optical signal and transmitting it are disposed in the door side portion close to each pressure sensor, and for each door side. Door opening / closing control that receives the optical signal sent from each transmission means, converts it into an electrical signal, and sends a control command to a separately installed door opening / closing drive device on the vehicle side corresponding to each transmission means A vehicle door safety control device, characterized in that each means is provided.   Transmitting means for transmitting an optical signal disposed on each double door that opens and closes a slide, and receiving an optical signal from each transmitting means disposed on a vehicle side corresponding to each transmitting means on the door side. 3. An optical signal transmission / reception system comprising two sets of optical signal transmission / reception systems each comprising a door opening / closing control means for sending a control command to a separately provided door opening / closing drive device, wherein optical signals having different wavelengths are used. Safety control device for vehicle doors.   In vehicles intended for mass transportation of passengers such as trains, trains, buses, etc., pressure sensors that detect the pressure of obstacles that touch the door and convert them into electrical signals are respectively provided at the door ends of the double doors that slide open and close. In addition, each of the doors close to each pressure sensor is provided with transmission means that is electrically connected to the pressure sensor, converts the detection signal into an optical signal, and transmits the optical signal. The vehicle side part corresponding to the door side transmission means receives the optical signal of the same wavelength sent from each transmission means, converts it to an electrical signal, and sends a control command to the door opening / closing drive device provided separately based on it. A vehicle door safety control device comprising a single door opening / closing control means.   In vehicles intended for mass transportation of passengers such as trains, trains, buses, etc., pressure sensors that detect the pressure of obstacles that touch the door and convert them into electrical signals are respectively provided at the door ends of the double doors that slide open and close. In addition, each of the doors close to each pressure sensor is provided with transmission means that is electrically connected to the pressure sensor, converts the detection signal into an optical signal, and transmits the optical signal. The vehicle-side portion corresponding to the door-side transmission means receives optical signals of different wavelengths sent from the transmission means, converts them into electrical signals, and sends a control command to the door opening / closing drive device provided separately based on the received signal. A door safety control device for a vehicle, wherein a door opening / closing control means is provided.

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