Unlock instant, AI-driven research and patent intelligence for your innovation.

Device for detecting the state of a switch

A technology of switch status and detection equipment, which is applied in the direction of switch equipment status indication, electric switch, emergency protection device for automatic disconnection, etc., and can solve safety problems and other problems

Active Publication Date: 2009-04-15
AIRBUS OPERATIONS (SAS)
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, a "pitch trim" sensor (switch) mounted on the pilot's or co-pilot's stick in the cockpit of the aircraft restores the pitch of the aircraft: if this sensor is not functioning properly, the steering information from the stick cannot correctly arrives in the flight computer, which in particular may raise safety concerns

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for detecting the state of a switch
  • Device for detecting the state of a switch
  • Device for detecting the state of a switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0079] According to an embodiment of the present invention, shaping circuit 7 (see Figure 4 ) comprising a Schmitt trigger circuit 18 : FIG. 9 shows a representation of a known type of circuit 18 . The circuit 18 increases the input voltage V of the detection circuit 4 D level so that it is compatible with the output voltage received at the input when necessary V D circuit compatible. In the above example of this description, the switch is a position sensor connected with the flight calculator through the FPGA: the output voltage V of the detection circuit can be improved by means of the flip-flop circuit 18 D , used to optimize data processing, and in this example to improve rising and falling edges as described above. The output voltage threshold level of the flip-flop depending on the power supply 19 is typically around +3.3 volts. selects the threshold of the flip-flop circuit 18 V haut so that V pullup >V haut .

[0080] Figure 10 shows the output voltage value o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The method according to the present invention relates to a device for detecting the state of a switch (1). The device comprises a detection circuit (4) delivering a signal of determined value (VpullUp) when the value of an electric quantity (Rint) characterising the state of the switch is less than a threshold called the lower threshold (Rclosed) and / or a signal of different value when the value of the electric quantity is greater than a threshold different from the lower threshold, called the upper threshold (Ropen). The present invention also relates to flight control systems in which the device is implemented and the aircraft comprising the systems.

Description

[0001] The invention relates to a switch state detection device capable of accurately detecting the opening and / or closing of a switch. technical field [0002] The switch in the present invention is an electrical device capable of interrupting or allowing the flow of electric current. There are different types of switches such as mechanically actuated switches, electromagnetically actuated switches, relays. The invention is applicable to all types of switches between the open and closed states of the switch, in electrical quantities such as the voltage across the switch, the resistance of the switch, the current flowing through the switch, the energy dissipated by the switch... There are measurable differences. Background technique [0003] Normally, when the open switch 1 ( figure 1 )closure( figure 2 ), the voltage U at the terminals of the switch is 0 (U=0) or practically 0. However, the switch may no longer function properly when it is not used frequently: if ima...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/16H01H1/60H01H71/04H02H3/04
CPCH01H71/04H02H3/04H01H9/167H01H1/605
Inventor G·博奈特M·迪洛尔
Owner AIRBUS OPERATIONS (SAS)