JPH11118412A - Electric signal generating device corresponding to position displacement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the development of a practical device which can detect static displacement other than acceleration with accuracy and has simple structure and great freedom in design according to the purpose. SOLUTION: This device includes an electrolyte 3 in a container 2, electric elements R1 and R2 electrically connected between a plurality of dielectric structural bodies 11 and 12 having respective electrodes impregnated in the electrolyte 3 or a electrode simple substance 5 and the electrodes of the plurality of dielectric structural bodies 11 and 12 , or between the electrodes 11 and 12 and the electrode simple substance 5, and a power source 4. A change in capacitance value presented between the electrodes 11 and 12 or between the electrode 5 and the electrodes 11 and 12 by application of an alternating current voltage to the electrodes 11 and 12 by the power source 4 and change in the contact area between the electrolyte 3 and electrodes 11 and 12 .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric signal generator corresponding to positional displacement, and more particularly, to an electrolytic solution and a dielectric structure immersed in the electrolytic solution, focusing on the operation principle of an aluminum electrolytic capacitor for alternating current. The change of the capacitance value developed by the change of the contact area is taken out as the change of the voltage signal,
The present invention relates to a novel electric signal generator using this as an electric signal of position displacement.

[0002]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric signal generator corresponding to a positional displacement which has a simple structure, has a large degree of freedom in design, and facilitates development of a practical device according to the purpose. In addition, when the period of the fluctuation is slow, that is, in addition to the acceleration, the static displacement can be detected steadily, and the variable capacitance type capacitors and toys, as well as the detection of the crustal deformation and the attitude control of the ship, etc. It is an object of the present invention to provide an electric signal generator corresponding to a position displacement applicable to a wide range of technical fields.

[0003]

In order to achieve the above-mentioned object, the present invention utilizes a novel structure in which the developed capacitance is made variable by a combination of an electrolytic solution and a plurality of dielectric structures immersed therein. Is what you do. That is, while pursuing the operation principle of aluminum electrolytic capacitors, and particularly, of aluminum electrolytic capacitors for AC, in the laboratory, the idea was obtained, and as a result of various experiments, the present invention was completed. It is a thing.

As is well known, the principle of an aluminum electrolytic capacitor for alternating current is that, as shown in FIG. 9, a dielectric oxide film is formed on the entire surface of an aluminum foil having a substantially increased surface area by etching. Is used as a dielectric structure with electrodes, and the two dielectric structures 1 ₁ , 1 ₂ are placed in a container 2 and a liquid medium 3 for passing electricity (hereinafter referred to as an electrolyte 3). immersed in, C by applying an alternating voltage by a power supply 4, now, if the expression capacitances respectively C _1, C ₂ per dielectric structure 1 _1, 1 _2, as total capacitance C The principle is to exhibit a function as a capacitor having a capacitance value of = C ₁ × C ₂ / C ₁ + C ₂ . Of course, the AC electrolytic capacitors that are actually sold on the market as products have a more complicated structure, and usually the separator paper is placed between aluminum chemical oils to form a wound element. It is well known that the liquid is impregnated and hermetically sealed in an aluminum can.

[0005] The present invention uses the operating principle of the above-mentioned AC electrolytic capacitor to change the capacitance developed by the contact area between the electrolytic solution and the dielectric structure having electrodes immersed in the electrolytic solution. By utilizing the principle that the voltage distributed to the plurality of dielectric structures by connecting the plurality of body structures electrically varies with the developed capacitance,
The present invention provides an electrolytic solution placed in a container, a plurality of dielectric structures each having an electrode immersed in the electrolytic solution, or an electrode alone, and between the electrodes of the plurality of dielectric structures, or An electric element for electrical connection between the electrodes of the plurality of dielectric structures and the electrode alone, preferably an electric element showing an impedance of at least 0.1 times or more the lowest value of the impedance shown by the variable capacitance. A power supply for electrical connection between the electrodes of the plurality of dielectric structures, an AC voltage is applied to the electrodes of the plurality of dielectric structures by the power supply, and the electrolytic solution and the plurality of dielectrics By changing the contact area with the structure, a change in the capacitance value developed between the electrodes of the plurality of dielectric structures or between the electrode alone and the electrodes of the plurality of dielectric structures causes a change in the voltage signal. Taken out as a change And it is characterized in formation.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the present invention relates to two dielectric structures 1 each having an electrode 5 in contact with an electrolytic solution 3 contained in a container 2 and an electrode such as aluminum conversion foil. ₁ , 1 ₂
When an AC voltage is applied from the power supply 4 to the circuit in which the resistors R ₁ and R ₂ which are electric elements are connected between the power supply 4 and the container 2 is tilted, the following phenomena are actively generated. It is used for That is, in FIG. 1, if the dielectric structure 1 _1, 1 ₂ and the contact area with the electrolyte 3 and S _1, S ₂ respectively, and S _1> S _2, the respective expression capacitance C
_{If 1} and C ₂ , then C ₁ > C ₂ . In this case, if R ₁ = R ₂ , the voltage v ₁ is shared by the resistor R ₁ and the voltage v ₂ is shared by the resistor R ₂ , and v ₂ > v ₁ . V = v ₁ + v ₂ . Thus, the dielectric structures 1 ₁ , 1 ₂ due to the positional displacement
The changes in the capacitances C ₁ , C ₂ are extracted as changes in the voltages v ₁ , v ₂ via the resistors R ₁ , R _2, and are converted into electrical signals. Further, from the viewpoint of the power supply 4, since the combined capacitance value changes due to the inclination of the electrolytic solution 3 due to the inclination of the container 2, the dielectric structure 11 ₁ ,
The combined capacitance value can also be continuously varied by changing the contact area with the electrolytic solution 3 by vertically moving ₁₂ in some way. In addition, even when three or more dielectric structures are arranged, it goes without saying that the above-described phenomenon is brought about, and this further enhances the utility value of the present invention.

[0007]

The embodiment will be described in further detail. Referring to FIG. 2 as a second embodiment, an electrolytic solution 3 in which ammonium borate is dissolved in ethylene glycol is put in a container 2, and two dielectrics are contained in the electrolytic solution 3. the structure 1 _1, 1 ₂ and spaced, to measure the capacitance value expressed in LCR meter 6.
Dielectric structure 1 _1, 1 ₂ are known in advance to exhibit 5μF when measured capacitance value by immersing the whole respectively.
To the electrolyte solution 3, as shown by the solid arrow, if the dielectric structure 1 _1, 1 ₂ was moved vertically at random each capacitance values observed in LCR meter 6 0~2.5μ
F.

[0008] In FIG. 3 of Example 3, was placed the electrolytic solution 3 into the container 2 of the spherical, immersed spaced two dielectric structure 1 _1, 1 ₂ apart electrolyte solution 3, further dielectric structure ₁ 1, 1 100 V as an electric element between _2, 600W
The electrode unit 5 was immersed and arranged as a neutral point via the incandescent lamps 7 and 8 described above. In response to this, the power supply 4
When V was applied and the container 2 was shaken as indicated by a solid arrow, the incandescent lamps 7 and 8 became brighter or darker each other. The incandescent lamp 7 having a smaller contact area between the dielectric structure 1 ₁ (or the dielectric structure 1 ₂ ) and the electrolyte 3
(Or incandescent bulb 8) glowed brighter than the other incandescent bulbs.

In FIG. 4 as a fourth embodiment, a cylindrical container 2 has support shafts 9 and 1 fixed to both outer sides in the diameter direction.
0 to the base 11 so as to be swingable, the container 2
Is filled with an electrolyte 3 and two dielectric structures 1 ₁ ,
1 ₂ are immersed at intervals, and the dielectric structures 1 ₁ ,
1 Between ₂ was immersed disposed resistors R _1, R ₂ electrolyte 3 electrically connected via the electrode alone 5 as neutral as an electrical element, by applying an AC voltage from the power source 4 When the pedestal 11 is shaken in the direction indicated by the solid arrow, the voltage v corresponding to the shake
_1, v variation of ₂ was observed. Here, it is necessary to provide securing the system to be a different criteria than the motor system of the dielectric structure 1 _1, 1 ₂ pedestal 11. In the present embodiment, the pedestal 11 was shaken by hand while being fixed to an experimental column. According to the present embodiment, it is suitable for detecting horizontal movement or acceleration.

FIG. 5 as a fifth embodiment shows a case in which the vertical movement or acceleration is detected by using the inertia of the weight. In FIG. 5, the container 2 is mounted on a substantially U-shaped integrated block 12. stationary, and places the electrolyte solution 3 to the container 2, to which two dielectric structure 1 _1, 1 ₂ and immersed spaced further resistor between the dielectric structure 1 _1, 1 ₂ The electrode unit 5 was connected as a neutral point through the bodies R ₁ and R ₂ and immersed in the electrolyte 3. Then, an AC voltage was applied from the power supply 4 to this. When no force acts on the weight 13 in the vertical direction indicated by the solid line arrow, the movable beam 15 having the fulcrum 14 is maintained in balance by the balance spring 16.
When a force is applied in the vertical direction, the dielectric structures 1 ₁ and 1 ₂ move up and down due to the inertia of the weight 13, causing a potential difference between the voltages v ₁ and v ₂ generated in the resistors R ₁ and R _2. Becomes

In the above embodiment, two dielectric structures are used. However, if three or more dielectric structures are used, more complicated signals can be extracted. FIG. 6 as Example 6 shows a case where three dielectric structures are used. In FIG. 6, three dielectric structures 11 ₁ , 1 ₂ , 1 ₃ is electrically connected via resistors R ₁ and R ₂ , immersed and arranged, and an AC voltage is applied to the
The voltages generated at the resistors R ₁ and R ₂ are detected by voltage detectors 17 and 18.
, It is possible to detect how the liquid level of the electrolytic solution 3 is. Of course in this case, the dielectric structure 1 _1, 1 _2, 1 ₃ and the electrical circuit connection, must be immobilized to another reference system is a motor system that is placed the container 2. In the experiment, the container 2 was fixed on a laboratory stand and the container 2 was shaken by hand.

1 and FIGS. 3 to 6, FIG.
In order to effectively perform voltage separation by the resistors R ₁ and R _{2 as} electric elements and the incandescent lamps 7 and 8, the impedance indicated by the variable capacitance of the dielectric structure, that is, the minimum value of 1 / ωC is required. It is desirable to select a resistance value having an impedance of at least 0.1 times or more, preferably 10 times or more of the value. This means that, as shown in FIGS. 7 and 8, the capacitance C ₁ = 5 μF, the capacitance C ₂ = 1 μF, and the connection resistance R ₀
When the variable resistors R were connected in parallel to the capacitances C ₁ and C ₂ and the variable resistors R were shaken, the voltages v ₁ and v ₂ appearing on the variable resistors R were measured. It has been found that in order to detect a change in capacitance as a difference in voltage value, an electrical element having a resistance value that is 0.1 times or more, preferably 10 times or more the impedance indicated by the capacitance is required.

[0013]

As described above, according to the present invention, a position displacement is detected as an electric signal by utilizing a change in capacitance which is generated in proportion to the contact area between the electrolyte and the dielectric structure. Therefore, while being able to detect position displacement with high accuracy,
The structure is simple, the degree of freedom of design is large, and the development of practical equipment according to the purpose is easy. That is, according to the present invention, since the capacitance value can be changed continuously within a certain range, it is needless to say that the capacitance value can be used as a variable capacitance type capacitor. It can be detected steadily, and it can be applied to fields such as toys, such as changing the intensity of light according to the inclination, changing the intensity of sound, and further increasing the distance between dielectric structures Thus, the accuracy of detecting the position displacement can be improved, so that the present invention can be applied to a wide range of technical fields such as detection of crustal deformation and attitude control of a ship.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of an example of an electric signal generator corresponding to a position displacement according to the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment.

FIG. 3 is an explanatory diagram showing a third embodiment.

FIG. 4 is an explanatory diagram showing a fourth embodiment.

FIG. 5 is an explanatory diagram showing a fifth embodiment.

FIG. 6 is an explanatory diagram showing a sixth embodiment.

FIG. 7 is a circuit diagram for measuring a resistance value of an electric element for effectively performing voltage separation by the electric element.

FIG. 8 is an explanatory diagram showing a measurement result in the circuit according to FIG. 7;

FIG. 9 is a diagram illustrating the principle of an aluminum electrolytic capacitor for AC.

[Explanation of symbols]

1 ₁ , 1 ₂ , 1 ₃ Dielectric structure 2 Container 3 Electrolyte 4 Power supply 5 Single electrode 7, 8 Electric element (incandescent lamp) R ₁ , R ₂ Electric element (resistor)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G01P 15/125 G01D 5/24 S

Claims (2)

[Claims] 1. An electrolytic solution contained in a container, a plurality of dielectric structures each having an electrode immersed in the electrolytic solution, or a single electrode, and between the electrodes of the plurality of dielectric structures, or An electric element for electrical connection between the electrodes of the plurality of dielectric structures and the electrode alone; and a power supply for electrical connection between the electrodes of the plurality of dielectric structures; Is applied to the electrodes of the plurality of dielectric structures, and by varying the contact area between the electrolyte and the plurality of dielectric structures, between the electrodes of the plurality of dielectric structures, or with the electrode alone An electrical signal generator corresponding to positional displacement, characterized in that a change in capacitance value developed between the electrodes of the plurality of dielectric structures is extracted as a change in voltage signal. 2. The apparatus according to claim 1, wherein the electric element is an electric element having an impedance of at least 0.1 times or more of a minimum value of the impedance indicated by the variable capacitance. Electric signal generator.