SU843003A1 - Molecular-electronic sensor of mechanical signals - Google Patents

Description

. 1 - The invention relates to a measurement technique and can be used to record mechanical effects, such as soil movements, accelerations, and the like. Molecular electronic devices for recording mechanical effects are known based on electrokinetic or diffusion principles. The electrochemical transducer of mechanical influences is known, comprising a case, the internal volume of which is filled with electrolyte and divided into two compartments, in each of which an anode is placed. And a cathode located in the partition wall, two sensitive elements, tightly fixed on the ends of the case, a source of constant voltage. connected to the anode and cathode through a resistor, in parallel with which an electric measuring instrument is connected, in series with which an additional resistor and diode l} are connected. A disadvantage of the known device is low sensitivity. The closest in technical essence to the present invention is a sensor of mechanical effects, comprising a diffusion converter made in the form of a filler. The electrolyte enclosure, bounded from the front sides by membranes and containing a septum with a channel, divides the housing into two cavities with an electrode. in each of them. The sensor also contains an inertial mass, suspended on an elastic suspension and connected to the membrane of the G23 converter. The disadvantage of this sensor is limited sensitivity. Associated with a change in the characteristics of the membrane converter over time. In addition, the presence of membranes increases the overall stiffness of the elastic system, which also leads to a decrease in the sensitivity of the sensor. The purpose of the invention is to increase sensitivity. This goal is achieved by the fact that in the sensor of mechanical signals the diffusion converter is made in the form of a vertically oriented closed loop, part but filled with electrolyte, and the inertial mass is mounted on a hinge, the axis of rotation of the inertial mass is shifted relative to its center of gravity in the plane of the contour of the diffusion converter . Since the center of gravity of the inertial mass does not coincide with the axis of its rotation, then, in the presence of a mechanical one, the rotation of the inertial mass hinge takes place. In connection with the GIM KIM, the fastening of the inertial mass with the transducer also rotates the subgrid, and converting the converter into a contour and the presence of air volumes leads to a difference in the electrolyte levels, which creates a counteracting one. the period of pressure is turned, and this, in its own way, leads to an increase in the sensitivity of the sensor due to a decrease in resistance of electrolyte flow from one chamber to another, determined in known devices by the presence of membranes and an increase in the flow rate of electrolyte V DN-5c, which is the channel of the cross section converter 3j, which is determined not only by the value of the inertial mass M, but also by the distance d6 of the center of gravity from the axis of rotation I q de Ggde dN - the change in the electrolyte levels; L is the contour length of the transform; the suspension is; a - effective acceleration. The drawing shows schematically the design of the proposed molecular-electroin sensor of mechanical signals. . The molecular electron sensor contains a housing 1 inside which is placed a diffusion converter 2, made in the form of an emento, a view of the contour of a hollow body partially filled with electrolytes 3 and oriented in a vertical plane. In the lower part of the housing, a conversion element 4 is installed, which contains an anode and a cathode, the reversible redox system together with the electrolyte. The air chambers of housing 6 are connected by a capillary channel 9, the housing of converter 2 is rigidly connected to an inertial mass 5 suspended by means of an adjusting device 7 on an elastic suspension &, to the housing 1 and mounted on a string hinge 10. An elastic suspension can be mounted on any distance r - center t of the inertial mass tin 5. The point of attachment of the inertial mass 5 to the elastic suspension 8 and the axis of rotation of the inertial mass 5 are displaced on opposite sides of the center of the gravity of the inertial mass 5 in the plane of the contour 2. The inertial mass body 5 is connected with membranes electroosmotic transducer 11 the electrical signal into a mechanical performed guide part of the damping device, and calibrator with appropriate inclusion in scheme mu schityuani feedback element. The sensor works as follows. In the presence of an external mechanical action (mixing, speed, acceleration), directed vertically, the inertial mass 5, displaced on an elastic suspension relative to the casing 1, turned on a hinge due to the fact that the center of gravity of the inertial mass does not coincide with the axis of rotation . Together with the inertial mass, the diffusion converter 2 is rigidly connected with it. This changes the levels of electrolyte in the chambers of the converter and creates a pressure drop, determined by the difference of these levels. The electrolyte 3 flows through the channel of the transforming element. And 4 and an electric signal appears on the electrodes proportional to the input mechanical action. Thus, the output electric signal on the transforming element is formed as due to inertial forces acting on the electrolyte mass and is obtained by turning the contour converter

and due to the difference in electrolyte levels in the converter chambers.

With the dimensions of the Proposed Sensor 1 ,,,, and the same values of the remaining parameters (m, K, a), an increase in the electrolyte consumption and, consequently, sensitivity in ...

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the use of the proposed sensor allows the dynamic range to be measured to measure the mechanical signal; low level fishing

Claims (2)

1. Authors certificate of the USSR 8 353289, cl. H 01 G 9/22, 25.11.70. 2. Authors certificate of the USSR I 448766, cl. G 01, L 9/18, H2.12.72 (prototype).