DD219333A1 - TILTABLE AND ACCELERATED SWITCHING DEVICE - Google Patents

Abstract

The invention relates to a device for the electronic evaluation of an acceleration or inclination change, in particular for use in the security technology. The invention has for its object to provide a switching device with which a tilt or acceleration change from the Nullage out in any direction is electronically evaluated. According to the invention, the object is achieved in that a metal ball in a funnel-shaped receptacle supports a coil in the rest position and detums it in the event of inclination and acceleration. Through the use of a shell core, a resonance resistance change of 1: 3 is achieved, whereby the evaluation can be carried out safely in large temperature ranges and interference cancellation by foreign metal objects is avoided.

Description

Patent Application ": 1307 Berlin, 26. 10." 3

Inventor: Rüdiger Wenzel

Zustellungsbevollmäch / represented by:

VEB Funkwerk Köpenick

Operation of the VEB Kombinat Nachrichteneiektronik

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Title of the invention

Slope-dependent and acceleration-dependent switching device

Field of application of the invention .

The invention relates to a tilt-dependent or acceleration-dependent switching device, in particular for evaluating a change in position from the horizontal arrangement. '

Characteristic of the known technical solutions

Are known inclination-dependent or acceleration-dependent switches that bridge when changing position by means of a freely movable electrically conductive contactor (mercury ball, metal ball) insulated from each other two electrically conductive contacts, as described in DE-OS 3IIIO99 and DE-PS 2223683. A disadvantage is the use of these known switch a low reliability by corrosion and pollution and the risk of mercury poisoning by leaking mercury vapors at destruction of these switches. Special protective measures are therefore required for portable use. If you want to work with small switching currents, for example, in potentially explosive systems, the strongly changing one will work

Contact contact resistance as a function of the change in position particularly disadvantageous. Bin further disadvantage is the requirement for hochwertigen'.Kontaktwerkstoff s such as copper, silver, gold for this type "of scarf goal der'Erfindung '. ^'<

The aim of the invention is to eliminate the disadvantages of the prior art.

Explanation of the essence of the invention

The invention has for its object to provide a tilt and acceleration-dependent electrical switching device, with high switching reliability and low. Volume without sparking switches. 'According to the invention the object is achieved in that when tilt or acceleration change in an inductive sensor of the resonance resistance of a ground core resonant circuit coil is greatly changed by removing or approaching a steel ball · A funnel-shaped. Pickup for the steel ball · is therefore placed in the center of a mass core coil and mounted so that when idle, tilt and acceleration equal to 0, the ball is in the center of the coil and this damped. If the inclination or the acceleration is changed from the zero position in any direction, the steel ball rolls out of the rest position as a function of the opening angle of the funnel and the coil is steamed. The following states are evaluated:

At rest, the coil is damped by the steel ball, the oscillator does not oscillate.

In the working state, the coil is not steamed, the oscillator oscillates in a transistor oscillator bridge circuit with 'subsequent switching stage.

On the fly

The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawing shows: Figure 1 - the switching device according to the invention LIi

static state · Figure 2 - the switching device according to the invention in the dynamic state.

Sin Plastgehäuse 2 takes a metal ball 7 Ln example a ball bearing ball with 6 mm diameter, as well as the HaIbschalenkern 3 aiit coil 4-. By glued plastic housing cover 1 and 5, the steel ball 7> half shell core and the coil 4 are secured against falling out. By a clamping device, for example in the form of a clamp, this assembly can be mounted either on a vertical or horizontal mounting surface. By the appropriate choice of the opening angle oC , the inclination angle or the required acceleration value , at which the ball rolls out of the center, can be changed. Via the coil terminals 6, the switching device is connected to the 2-stage transistor oscillator bridge circuit 8.

In the static state of the switching device, the steel ball 7 is in the center of the half-shell core 3 and damps the coil 4 so strong that the oscillator does not vibrate. This state is converted by the switching stage 9 into a required output signal. By appropriate circuit design of the oscillator and the switching stage to be adjusted to operating voltage Ug various sizes. If, by changing the inclination or changing the acceleration of a body to be monitored, the switching device connected to this body is set in the dynamic state, the metal ball 7 rolls out of the center of the

shell core 3 and undid the coil 4. The oscillator 8 oscillates. This state is characterized in the switching stage 9 by a changed output signal at the switching output 10 with respect to the static state.

Claims (4)

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Fin rfin dun gsa η 's ρ smell 1. ITeigungsabhängige and acceleration-dependent switching device, in particular for use in the security technique , characterized in that a HaIbschalenkern (3) and a coil located thereon (4) directly with a, in a funnel-shaped receptacle of a plastic housing (2) with its opening angle ( cxO located steel ball (7) is connected. 2. tilt-dependent and acceleration-dependent switching device according to item 1, characterized in that the selected opening angle (oO) of the funnel-shaped receptacle of the plastic housing (2) can be made variable for corresponding applications. 3. slope-dependent and acceleration-dependent switching device according to item 1, characterized in that are avoided by the selected structure faulty circuits by externally additionally brought out metal objects that when occurring corrosion damage to the steel ball surface, the switching device remains functional and that the switching device is maintenance-free to a high degree. 4. Ueigungsabhängige and acceleration-dependent switching device according to item 1, characterized in that the changes of the resonance resistance of the coil 4 in the resonant circuit at least 1: 3 of unbe-. dampens to be damped amounts and thus a safe evaluation in a two-stage transistor oscillator circuit (8) can be done and the change of - O -     , - 6 - Resonance ratio is largely independent and thus an "evaluation of inclination changes or acceleration changes in very large temperature ranges is possible. Slope-dependent, and acceleration-dependent switching 'device according to item 1, characterized in that no sparks can occur during switching and thus can be used in explosive; fcen media. Slope-dependent and acceleration-dependent switching device according to item 1, characterized in that the inclination change or acceleration change from the horizontal position can take place in any direction and 'is always evaluated safely. For this 1 page drawing