Swing door-based entrance system with automatic recognition of linkage reduction curve

Abstract

An entrance system (1) comprises a swing door member (10) having a door leaf (12), and a sensor unit (S1; S) mounted to the door leaf (12), the sensor unit comprising a door angle sensor (S1). The entrance system (1) further comprises an automatic door operator (30) having a motor (34) capable of causing movement of the door member (10), a controller (31) for controlling operation of the motor (34), and a linkage (40) connected to the automatic door operator (30) and the door leaf (12) for transferring torque generated by the motor (34) to the door leaf (12). The automatic door operator (30) is operable in a learn mode (60) and an operational mode (70). The controller (31) is configured, in the learn mode (60), to automatically establish a linkage reduction curve (65) by determining, for a movement of said door member (10) between a shut closed position (18) of said door leaf and a swung open position (19) of said door leaf, the torque required by said motor (34) to cause movement of said door leaf (12) at different door leaf angles (#), the different door leaf angles being determined from measurement readings of said door angle sensor (S1). The controller (31) is configured, in the operational mode (70), to compensate for a non-linear torque transfer characteristic of the linkage (40) by applying the linkage reduction curve (65) when controlling said motor (34) to cause the door member (10) to swing open.

Description

technical field [0001] The present invention generally relates to an entrance system having a swinging door member and an automatic door operator for causing movement of the swinging door member. More specifically, the present invention relates to an entry system having a linkage connected between an automatic door operator and a leaf of a swinging door member for transmitting torque generated by a motor of the automatic door operator to the leaf. The invention also relates to an associated method of operating an entrance system. Background technique [0002] Entry systems with automatic door operators are often used to provide automatic opening and closing of one or more movable door members to facilitate entry and exit to buildings, rooms, and other areas. The door member is usually a swing door. Other types of entry systems are, for example, sliding or revolving doors. [0003] In an entry system based on a swing door, there is at least one swing door component with a ...

AI Technical Summary

Problems solved by technology

[0011] First, it relies on manual selection of dip switch settings and is therefore prone to human error

[0012] Second, the number of available settings is limited and may not be sufficient to provide an accurate estimate of the predicted torque transfer characteristics of the connecting rod in a particular practical application

[0013] Third, but not least, critical components of an entry system (e.g., automatic door operators, linkages, and leaves hinged to the door frame) may not be installed in the way expected by a certain DIP switch setting

This could be due to human error or sloppiness during installation, or because the building where the entrance system is installed has limitations in terms of margins, size, available space, etc.

[0014] Due to these shortcomings, the entrance system may not meet the technical standard requirements

In turn, this may increase the risk of accidents, failure and excessive wear of components of the intake system

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