Piezoelectric acceleration pick-up
First Claim
1. Vibration and acceleration pick-up comprising a mass sensor arrangement coupled with an electronic amplifier, the mass sensor arrangement and electronic amplifier being disposed within a synthetic material housing, the mass sensor arrangement being coaxially arranged about a support screw means with a mushroom shaped head which is anchored in the synthetic material housing and retains, spaces and stresses the sensor arrangement, the amplifier and a cover for the synthetic material housing in one unit, the inner surface of the synthetic material housing being provided with a conducting layer which is connected to the cable screening of an output cable of the electronic amplifier.
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Accused Products
Abstract
The invention relates to an acceleration pick-up which can be produced at favorable cost in large numbers, for which new constructional means are used. The apparatus consists of a mushroom-shaped support screw (6,56), which is inserted directly in the synthetic material housing (8) of the measuring device and which mounts and retains both the mass sensor arrangement (1, 2, 3, 4), the printed circuit board (15) as well as the housing cover (9). In the immediate vicinity of the mushroom-shaped head (7) at least one flat holding magnet (30) is likewise inserted directly in the synthetic material housing (8). In order to screen the sensor arrangement against disturbance effects, the inside of the synthetic material housing is coated with a conducting metal layer (26,28,66) for inner screening, which is connected to the screening of the connecting cable piezoelectric, piezoresistive, inductive or other systems can be used as sensor elements.
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Citations
9 Claims
- 1. Vibration and acceleration pick-up comprising a mass sensor arrangement coupled with an electronic amplifier, the mass sensor arrangement and electronic amplifier being disposed within a synthetic material housing, the mass sensor arrangement being coaxially arranged about a support screw means with a mushroom shaped head which is anchored in the synthetic material housing and retains, spaces and stresses the sensor arrangement, the amplifier and a cover for the synthetic material housing in one unit, the inner surface of the synthetic material housing being provided with a conducting layer which is connected to the cable screening of an output cable of the electronic amplifier.
Specification