JPH08194019A - Electric potential detector - Google Patents

Abstract

PURPOSE: To provide an electric potential detector capable of detecting electric potential of a body to be detected as magnification of discharge voltage of neon tubes by way of using a plural number of the neon tubes. CONSTITUTION: A plural number of neon tubes 5a-5d are installed between an electric potential detecting electrode 3 to detect electric potential by way of coming into contact with a body to be detected and an amplifier 7 by way of serially connecting them to each other. An earth electrode 14 is installed on a ground G, and the number of connection of the neon tubes 5a-5d is selected by changing a change-over switch 6 over. When the neon tubes 5a-5d are discharged, an annunciating means 8 is actuated by outputting an electric potential detection signal from the amplifier 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric potential detector which can easily detect an electric potential value with respect to the earth within a predetermined range by contacting an object.

[0002]

2. Description of the Related Art In recent years, home electric potential therapeutic devices have been marketed and are in general use. This electric potential treatment device applies a high voltage of about −140 V to −600 V to a bed-like floor (hereinafter referred to as “electric floor”) to charge the human body on the electric floor to a negative potential, stiff shoulders, chronic constipation, insomnia, etc. It is a therapeutic instrument for treatment.

By the way, if the electric potential treatment device is installed in a place such as a home where there is no dedicated equipment, the insulation may be poor and the electric potential may be lowered due to discharge, whereby the therapeutic effect may not be exhibited. Therefore, conventionally, a voltage detector for detecting whether or not the potential is a negative potential by touching a potential tester, a person using the potential therapy device, or the like, has been developed.

[0004] For example, in the electroscope disclosed in Japanese Utility Model Publication No. 51-9266, a neon tube is interposed between a detector and an amplifier which come into contact with an object to be inspected, and the detector is electrified. The presence or absence of electrification is detected by amplifying the discharge with an amplifier and sounding a buzzer or causing a neon tube to emit light.

[0005]

By the way, the negative potential for the electric potential therapeutic device to exert a certain therapeutic effect is required to be a predetermined electric potential, for example, a negative electric potential of 280 V as described above. On the other hand, since the discharge start voltage of the neon tube is generally about 70V, the means disclosed in the above publication merely confirms that the test object has a voltage of 70V or higher. It is not possible to achieve the purpose of determining whether or not the test body is charged to a potential having a therapeutic effect.

The present invention has been made in order to solve the above-mentioned conventional problems, and uses a plurality of neon tubes and can detect the potential of the test object as a multiple of the discharge voltage of the neon tubes. It is intended to provide electric appliances.

[0007]

In order to achieve the above object, the structure of the potential detector of the present invention is to detect the discharge of the neon tube and the potential detection electrode for detecting the potential by touching the body to be detected. A plurality of neon tubes are connected in series with the amplifier, a ground electrode is attached to the ground of the amplifier, and when the neon tube discharges, a potential detection signal is output from the amplifier to activate the notification means. Is.

As the amplifier, a usual amplifying means can be used. In addition, the notification of the potential detection signal output by the amplifier is performed by lighting, blinking, or the like of a light emitting diode,
Conventionally used notification means such as a buzzer notification can be applied. The potential detector of the present invention can be formed so that the number of neon tubes connected in series can be switched. That is, a changeover switch that switches the number of neon tubes connected in series is provided between the plurality of neon tubes connected in series and the amplifier, and the potential is quantitatively detected within the range of the discharge voltage width of the neon tubes. can do.

[0009] The potential detector is formed in a small size so that it can be held by hand, a ground electrode is attached to the grip portion, and the operator of the voltage detector is grounded by holding the grip portion, and the potential detection electrode is attached to the object to be detected. It can be configured so as to come into contact and detect electricity. However, the potential detection electrode and the change-over switch may be provided separately from the main body of the voltage detector, or the ground electrode may be attached to the floor side of the electric floor, or the like, in various other modes.

The potential detector having the above-mentioned structure is applied not only to the detection of negative potential treatment but also to the detection of positive potential by exchanging the polarities of the potential detection electrode and the ground electrode. be able to.

[0011]

The means for connecting and attaching a plurality of neon tubes in series between the potential detecting electrode and the amplifier reaches a value at which the discharge start voltage of a predetermined neon tube is equal to or more than the voltage which is a multiple of the number of neon tubes connected in series. Can be determined. The means for switching the number of the neon tubes connected in series by using the changeover switch can easily detect the potential of the detection target within a range of a predetermined width. Therefore, it is possible to individually utilize a target whose potential is difficult to predict or a plurality of potentials.

The above-mentioned means for attaching the ground electrode to the grip portion is formed so that the potential detector can be held and used by hand.
Even a user who is not accustomed to handling the measuring instrument can easily and surely detect the potential.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. The electric potential detector 1 of this embodiment shown in FIG. 1 is designed to be held and operated by a detector operator 2 (FIG. 2) by hand, and its circuit configuration will be described with reference to FIG. Through the current limiting resistor 4 to the potential detection electrode 3,
The four neon tubes 5a, 5b, 5c, 5d (all of which have a discharge voltage of 70V are used) are connected in series, and the neon tubes 5
a of the electrode on the side of the current limiting resistance 4 of the a, between the neon tube 5a and the neon tube 5b, between the neon tube 5b and the neon tube 5c, between the neon tube 5c and the neon tube 5d, and the neon tube 5
The remaining poles of d were sequentially connected to the contacts 6a, 6b, 6c, 6d, 6e of the changeover switch 6 and the changeover contact 6f was connected to the input side of the amplifier 7, as shown in the figure.

The changeover switch 6 used in this embodiment is a slide type changeover switch, and the changeover contact 6f can be operated while holding the potential detector 1 by hand.
The present invention is not limited to this, and other types such as a rotary changeover switch can be used. The amplifier 7 is composed of a comparator and has a light emitting diode 8 on the output side.
An informing means 9 including a and a buzzer 8b was attached. A resistor 10 for limiting current is connected to the light emitting diode 8a.

The non-inverting input terminal of the amplifier 7 is connected to the switching contact 6f of the selector switch 6, and the inverting input terminal is supplied with a voltage obtained by dividing the voltage of the battery 11 by the resistors 12a and 12b. The inverting input terminal and the inverting input terminal are connected by a resistor 13, and when there is no input signal at the non-inverting input terminal of the amplifier 7, the inverting input terminal is short-circuited and the amplifier 7
There is no signal output from.

The earth electrode 14 is connected to the ground G of the amplifier 7 in terms of a circuit, but the potential detector 1 of this embodiment is formed in a rod shape as shown in FIG. 2, and is a casing 15 made of an electric insulator. The potential detecting electrode 3 was exposed to the tip side of the, and the back side was formed of a conductor, and this portion was used as the ground electrode 14. Therefore, the operator 2 of the electroscope standing on the floor 16 with bare feet can ground the ground G of the potential electroscope 1 by grasping the portion of the earth electrode 14.

Since the potential detector 1 is constructed as described above, when the contact 6a is selected and both the ground electrode 14 and the potential detection electrode 3 are touched, the non-inverting input of the amplifier 7 is given through the human body. It can be confirmed that the potential detector 1 is normally operated by lowering the voltage from the inverting input voltage, outputting the signal by the amplifier 7, and operating the notification means 8, that is, the light emitting diode 8a and the buzzer 8b.

Next, the changeover switch 6 is switched to the contact 6b, and the neon tube 5a is provided between the potential detecting electrode 3 and the earth electrode 14.
If the notification means 8 does not operate when only connected, the voltage of the test object (not shown in FIG. 1) is 70 V or less, and when the notification means 8 operates, the voltage is 70 V or more. , It can be useful for detecting the ground side and live line side of the power supply.

Further, when the changeover switch 6 is changed over to the contact 6d, three neon tubes 5a to 5c are connected in series between the potential detecting electrode 3 and the earth electrode 14, so that if the notifying means 8 does not operate, it is detected. The electric potential of the electric body is 210 V or less,
It can be determined that the subject is the live line of the 100V commercial AC power supply. Further, when the notification means 8 is activated, it is determined that the voltage of the test body is a high voltage exceeding 210V.

As described above, by connecting the changeover contact 6f of the changeover switch 6 to any of the contacts 6a to 6e, it is possible to know the value of the potential / voltage in a 70V width regardless of AC / DC. The potential detection electrode 3 and the ground electrode
If 14 is reversed, a positive potential can be used for detection. Next, a case where the electric potential detector 1 of this embodiment is inspected for the operating state of the electric potential treatment device will be described with reference to FIGS.
In FIG. 2, an electric floor 17 made of a conductor is placed on an electrically insulating mattress 18 and electrically insulated from the floor 16, and a negative high potential generator 19 is used, for example, a minus 300.
A V potential was applied.

As shown in FIG. 2, the human body 20 (in this case, the human body to be inspected) under electric potential treatment may take a posture such as sleeping so that the body is in sufficient contact with the electric floor 17. To examine the potential of the human body 20 during treatment, the operator 2 of the voltage detector holds the ground electrode 14 of the voltage detector 1 and detects the potential detection electrode 3 at the tip.
Should be brought into contact with the human body 20. Then, when the notifying means 8 is activated when the contact 6e of the changeover switch 6 is selected, the potential of the human body 20 is 280 V or higher, so it can be confirmed that the potential therapy device is operating normally.

The potential detector 1 described above is housed in one casing 15 so that it can be held and operated with one hand, but it may be a separate body depending on the purpose of use, and the earth electrode is directly grounded, The present invention can be carried out in an appropriate mode depending on the situation, such as enabling earthing without passing through the human body.

[0023]

As described above, the potential detector of the present invention can bring the following effects. The invention according to claim 1, wherein a plurality of neon tubes are connected in series, and the potential of the test body is detected by a multiple value of the discharge start voltage of the neon tubes. The simple detection of the potential / voltage of the object to be detected, such as detection and confirmation of the power supply voltage, can be performed easily and at low cost even by a person having no specialized knowledge such as a householder.

The invention according to claim 2 is characterized in that the number of neon tubes connected in series is switched by a changeover switch, and it is easy to determine whether or not the potential / voltage of the detection target is within a predetermined width. You can Therefore, it is possible to provide a target whose potential / voltage is difficult to predict and a voltage detector which detects a plurality of potentials. The invention according to claim 3, wherein the potential detector is formed so that it can be held and used by hand, and the ground electrode is attached to the grip portion, the user can check the potential of the potential therapy device even if the user is not accustomed to handling the measurement device. It can be done reliably.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a potential detector according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which the electric potential detector shown in FIG. 1 is formed so as to be operable with one hand and the electric potential of the electric potential therapeutic device is detected.

[Explanation of symbols]

1 Potential Detector 2 Detector Operator 3 Potential Detection Electrode 4 Current Limiting Resistor 5a Neon Tube 5b Neon Tube 5c Neon Tube 5d Neon Tube 6 Changeover Switch 7 Amplifier 8 Notification Means 8a Light Emitting Diode 8b Buzzer 9 Battery 14 Earth Electrode 15 Casing 16 Floor 17 Electric floor 18 Mattress 19 Negative high potential generator 20 Human body (test object) G Ground

Claims (3)

[Claims] 1. An electric potential detection electrode for detecting an electric potential by touching a test object, and an amplifier for detecting a discharge of a neon tube,
A potential detector in which a plurality of neon tubes are connected in series, a ground electrode is attached to the ground of the amplifier, and when the neon tube discharges, a potential detection signal is output from the amplifier to activate the notification means. 2. The changeover switch for switching the number of neon tubes connected in series between the potential detection electrode and the amplifier is interposed between the amplifiers and the plurality of neon tubes connected in series. Potential detector. 3. The potential detector is integrally formed so that it can be held and operated by hand, the ground electrode is attached to the grip, and the operator of the detector holds the grip and detects the potential detection electrode. The method according to claim 1 or 2, which is formed so as to contact an electric body.
The potential detector described.