FR2849887A1 - Control and detection system for medical industry, has radio transmitter transmitting opening order of shutter to activating organs and maintains organs in open position till transmitter find person in reception zone of receiver - Google Patents

Abstract

The system has a radio transmitter cooperating with a radio receiver placed on a body of a vehicle. The transmitter transmits an opening order of a shutter to automatic activating organs and maintains the activating organs in an open position till the transmitter find a person in a reception zone of the receiver. The transmitter and the receiver establishes a communication between a door and the vehicle.

Description

The present invention relates to a control and detection system

  making it possible to prevent a collision between a person or a vehicle, in particular a handling machine and the curtain or the leaf (s) of a door, in particular an industrial door provided with automatic actuating members that is to say automatic operation within the meaning of standard NFP 25362.

  Such automatic doors within the meaning of standard NFP 25362 are widely used in factories, workshops, stores, ...; they are distinguished by the presence of a curtain or of movable leaves which are capable of being very quickly moved by lowering or vertical lifting (folding in accordion (stacking), winding, etc.) or by opening and lateral closing, or by opening said to the French (pivoting of leaves around vertical axes).

  The operating speed of the moving masses of automatic doors with rapid opening and closing and the associated kinetic energy can be a source of danger when they strike a person or an obstacle during their movement.

  These doors are in particular subject to shocks with different types of vehicles such as in particular motorized handling carts with a carried or accompanying driver.

  To minimize such risks, the authorities have been led to establish very strict standards which industrial doors must meet, in particular the NFP 25362 standard.

  In addition to the aforementioned dangers for people, collisions between automatic doors and vehicles can have harmful consequences not only for the doors themselves (deterioration of the curtains, or even of the complete door) but also on the production circuits (blocking).

  The risk of impact with the curtain or the leaves of these automatic doors is mainly linked to their automatic operating cycle, which is generally as follows: Opening order; possible notice of 2 seconds (in the case of doors accessible to the public); door opening; time delay for keeping the door open; door closing.

  The closing of the door is therefore not linked to the absence of people and / or vehicles in the dangerous zone of the door but to the execution of an automatic cycle, the expiration of a time delay "d ' high inversion "causing the door to close.

  It should be noted that a shock can occur not only when closing but also when the door is opened, if this opening is not complete when the person or vehicle arrives.

  Such a situation is often the result of the physical impossibility of installing the control elements for opening the door (radar, push button, pull tab, magnetic detection) sufficiently upstream of the door.

  Security relating to the closing of the door is ensured by presence or contact detection defined by standard NFP 25362.

  However, it is not possible to guarantee the security of the entire door closing area.

  Depending on the mass of the moving elements and the field of use of the door (in particular its accessibility to the public), the aforementioned standard does indeed provide for the obligation to provide the door with additional contact security obtained by equipping the threshold or the edges thereof with a sensitive edge so as to stop its closing and to control its opening in the event of an impact.

  The shocks thus generated, however, remain dangerous for people and property.

  In this context, the object of the present invention is to remedy these drawbacks by proposing a control and detection system allowing the prevention of a collision between a person or a vehicle, in particular a handling machine and the curtain or ( the) wing (s) of a door, in particular an industrial door provided with automatic actuating members.

  According to the invention, this system is characterized in that the person, the vehicle, or / a person on board the vehicle or accompanying the latter is equipped with a permanent radio transmitter cooperating with a permanent radio receiver placed on the door for transmitting to the automatic actuating members an order to open the curtain or the leaves and to keep them in the open position as long as the transmitter is in the reception area of the receiver.

  This characteristic makes it possible to establish a radio link between a vehicle and an industrial door.

  It is thus possible, in addition to the opening of the door, also to manage the automatic closing of the latter after the passage of a vehicle, whereas according to the conventional method the door was closed after an adjustable delay in the absence of a new order ordering its opening regardless of the position of the person or the vehicle.

  This system is particularly advantageous in the case of doors provided with airlocks delimiting prohibited access areas, such as are frequently found in drug production factories: in fact, when such doors are closed automatically 10 after a delay, it is not uncommon for people to be locked in the airlock.

  The system according to the invention also makes it possible to associate with a given transmitter a signature which can be memorized so as to manage the right of access of a given vehicle to different automatic doors.

  According to another characteristic of the invention, the radio transmitter and receiver are transmitter-receivers.

  This characteristic makes it possible to establish a permanent dialogue between a door and a series of vehicles so as to manage not only the risks of collision between the door and a vehicle, but also the risks of collision between different vehicles in particular by informing a vehicle. the presence of a priority vehicle having requested the opening of the door beforehand.

  According to another characteristic of the invention, parameters related to the latter are detected or collected on the vehicle such as its dimensions, its speed or its distance from the door and signals representative of this information are transmitted to the actuating members. of the curtain or the leaves of the door which control in response parameters linked to the door such as the speed, the height or the width of opening of the curtain 30 or of the leaves of the latter.

  We can thus adapt the opening speed of the curtain or the leaves of a door to the speed and dimensions of a vehicle approaching it.

  This characteristic therefore has the intrinsic advantage 35 of making it possible to adapt the speed and the width or the opening height of an industrial door to real needs, which has the consequence of reducing the fatigue of the automatic actuating members. and motorization thereof, and therefore a lowering of the wear speed of these members.

  Another advantage linked to this characteristic corresponds to a lowering of the noise level.

  It should also be noted that control of the door opening parameters can also be used to improve the sound insulation of a room or to reduce heat losses through the door and thus obtain savings. energy.

  According to the invention, it is also possible to transmit in return to the vehicle signals representative of the parameters detected, in particular excessive speed information.

  This characteristic therefore makes it possible to "empower" the drivers of vehicles, and if necessary to provide the latter with "black box" type storage devices enabling them to be monitored.

  Consequently, the invention makes it possible to carry out complete management of an automatic door or of a group of automatic doors (control of the passage of handling equipment, possible shock hours, etc.).

Claims (3)

R E V: E N D I C A T I O N S   1) Control and detection system allowing the prevention of a collision between a person or a vehicle, in particular a handling machine, and the curtain or the leaf (s) of a door, in particular of a door provided with automatic actuating members, characterized in that the person, the vehicle or a person on board the vehicle or accompanying the latter is equipped with a permanent radio transmitter cooperating with a permanent radio receiver placed on the door for transmitting to the automatic actuating members an order to open the curtain or the leaves and to keep them in the open position as long as the transmitter is in the reception area of the receiver.   2) System according to claim 1, characterized in that the transmitter and the radio receiver are transceivers so as to allow establishing a dialogue between the door and the vehicle, in particular to inform it of the presence of a priority vehicle having previously requested the opening of the door.   30) System according to claim 2, characterized in that parameters related to the latter are detected or collected on the vehicle such as its dimensions, its speed or its distance from the door and signals representative of these are transmitted. information to the curtain or door leaf actuators which control in response to parameters related to the door such as the speed, height or width of opening of the curtain or of the leaves. 30