| 摘要 |
1,092,933. Liquid resistors; transformers. KURATORIUM FœR VERKEHRSSICHERHEIT. March 12, 1965 [March 13, 1964; May 4, 1964], No. 10664/65. Headings HIS and H1T. [Also in Divisions G1, G4 and H2] A liquid resistor is used in apparatus for detecting acceleration (see Division G1) comprising an electrode 25 moving with a pendulum 11 (or the pendulum itself serves as an electrode) in a conducting liquid 27 contained in a stationary housing to which another electrode is secured. Since the resistance of the liquid 27 varies with the separation of the electrodes it can be used to detect the position of the pendulum under the influence of acceleration and, if properly selected, the viscosity of the liquid provides the necessary damping of the pendulum. In another embodiment, Fig. 6 (not shown), the liquid 27 serves as an inertia mass which moves relative to a suitably shaped housing (29) under acceleration and varies the cross-section of liquid 27 available to pass current between two electrodes (26, 28) fixed relative to the housing (29) whereby the resistance is increased and serves as a measure of the acceleration. A transformer in an acceleration detector, Fig. 3 (not shown), comprises a coupling coil (17) secured to a mass 11 moved under acceleration relative to another coupling coil (18) connected to an A.C. source so that the voltage induced in the coil (17) is a measure of its displacement relative to the coil (18). In another embodiment, Fig. 4 (not shown), a ferromagnetic body (24) of suitable shape acts as inertia mass and couples two coils anchored to the housing. The body (24) could be a disc extending into the space between the coils. |
