JP3635465B2 - Contact moisture detector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a contact-type moisture detector for instantaneously judging where on the surface of the detected part has a moisture content above a certain level by moving the detector while contacting the surface of the detected part. Is.
[0002]
This contact-type moisture detector can be used to detect whether or not there is a spill of water or juice in a passenger train seat or the like.
[0003]
[Prior art]
In general, a moisture measuring apparatus is configured by projecting a detection unit composed of two short axes at one end of the apparatus main body, and bringing both short axes, which are detection units, into contact with the surface of the detected part at a substantially right angle. Then, the moisture content of the surface is displayed on the display unit by a finger or digitally.
[0004]
However, when it is desired to instantaneously detect whether or not there is a place with a moisture content above a certain level on one of the surfaces of a relatively wide range, the work efficiency is very poor when this moisture measuring device is used. There was a problem.
(1). Since it is a format that reads the value shown on the display with the eye, it takes time to stabilize the shake of the needle in the needle indicating type meter, and even in the digital type, it takes about several seconds for A / D conversion and moisture content calculation, Whichever method is used, it takes time to make a decision.
(2). The result cannot be determined unless the display unit provided in the apparatus main body is directed toward the user side. In addition, the apparatus main body must be in a substantially perpendicular posture with respect to the surface of the detected part so that the two short axes are surely in contact with the surface of the detected part.
[0005]
[Problems to be solved by the invention]
Therefore, according to the present invention, (1) it can be instantaneously determined whether or not there is a place where the moisture content is above a certain level on the surface of the detected part, and (2) the direction of the apparatus main body with respect to the user and the apparatus with respect to the surface of the detected part. It is an object of the present invention to provide a contact-type moisture detector in which the posture of the main body is not restricted so much.
[0006]
[Means for Solving the Problems]
(Invention of Claim 1)
The present invention has a handle E that can be gripped by a user, and is used by the user holding the handle E with his / her hand, while the detection unit 2 is in contact with the seat and backrest of the seat. A contact-type moisture detector that is capable of instantaneously determining in which position of the seat portion and backrest of the seat a moisture content above a certain level by moving, the end portion of the apparatus body 1 A plurality of positive contacts 20 and negative contacts 21 are protruded from each other to form the detection unit 2, and all the positive contacts 20 and all the negative contacts 21 are electrically connected to each other. The apparatus main body 1 is provided with moisture detection display means 3 that is visually displayed when the resistance value between at least one of the positive contact 20 and the negative contact 21 falls below a certain value. 180 on one peripheral wall A contact-type moisture detector characterized in that the moisture detection display means 3 can be viewed from any direction during use by arranging the moisture detection display means 3 at intervals of less than or equal to the angle.
(Invention of Claim 2)
The contact-type moisture detector according to the present invention relates to the invention described in claim 1 above, and is formed by projecting a detection unit 2 at the end of the apparatus body 1, and the positive contact 20 and the negative contact 21 serving as the detection unit 2 are: Rods or plates are arranged side by side and the ridge line is formed in a substantially U shape or a substantially arc shape.
(Invention of Claim 3)
The contact-type moisture detector according to the present invention relates to the invention according to claim 1 or 2, wherein the power supply display means 4 which is in a non-display state when the voltage of the power supply 5 is lowered to a state where the moisture detection display means 3 cannot be displayed. The power supply display means 4 is set in number and position so that it can be seen from any direction during use.
(Invention of Claim 4)
The contact-type moisture detector according to the present invention relates to the invention according to any one of claims 1 to 3, wherein a detection signal generated when the resistance value between the positive contact 20 and the negative contact 21 becomes a certain value or less is not detected. A pulse signal having a time longer than the generation time of the detection signal is generated from the non-sinusoidal wave generation circuit by inputting to the sine wave generation circuit, and the moisture detection display means 3 is set in the output state only for the generation time of the pulse signal. The output time of the pulse signal from the non-sinusoidal wave generation circuit is 0.1 second to 1.0 second.
[0007]
The operation and effect of the contact-type moisture detector of the above invention will be described in the section of the embodiment of the invention below.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings shown as embodiments.
Embodiment 1
FIG. 1 is an overall perspective view of the contact-type moisture detector W of this embodiment, and FIG. 2 is a positive contact 20, a negative contact 21 of the contact-type moisture detector W, an LED 30 of the moisture detection display means 3, and a display for power supply. It is a figure which shows arrangement | positioning of LED which comprises the means 4, FIG. 3 is an electric circuit diagram used for the said contact-type moisture detector W. FIG.
(About the configuration of the contact-type moisture detector W)
As shown in FIGS. 1 and 3, the contact-type moisture detector W includes an apparatus main body 1, a detection unit 2, a moisture detection display unit 3, a power supply display unit 4, a power supply 5, and a threshold value. It comprises a setter 6, a transistor 7, and a switch 8, and as shown in the figure, three positive contacts 20 and three negative contacts 21 are provided at the end of the apparatus body 1 to detect the detector. 2, 2 and 2, and all the positive contacts 20 and all the negative contacts 21 are electrically connected to each other, and the resistance value between at least one positive contact 20 and the negative contact 21 is constant. When the following occurs, the moisture detection display means 3 is in a display state visually and audibly.
[0009]
As shown in FIG. 1, the apparatus body 1 is a cylindrical body made of synthetic resin, and has a dry cell storage chamber 10 formed therein.
[0010]
The detection unit 2 is composed of the three positive contacts 20 and the negative contact 21 as described above, and the positive contact 20 and the negative contact 21 have a tip portion that contacts the surface of the detected portion as shown in FIGS. It is composed of a spherical conductive metal rod. In this embodiment, as shown in FIG. 2, the positive contacts 20 and the negative contacts 21 are alternately arranged in a hexagonal shape.
[0011]
The moisture detection display means 3 comprises an LED 30 for instantaneously judging whether or not the surface of the detected part has a moisture content of a certain level or more, and a buzzer 31 for instantly judging auditorily. The LEDs 30 are arranged on the peripheral wall surface of the apparatus main body 1 at intervals of 120 ° (shown in FIG. 2), and the buzzers 31 are arranged on the apparatus main body 1 at intervals of 180 °. The LED 30 lights up in a green color, for example, when the surface of the detected part has a moisture content above a certain level, that is, when the resistance value between at least one plus contact 20 and the minus contact 21 is below a certain level. It is.
[0012]
The power supply display means 4 is constituted by an LED that is lit in red, and when the voltage of the power supply 5 is lowered to a state where the moisture detection display means 3 cannot display, the red lighting state is switched to the unlit state (non-display state). It will be. As shown in FIG. 1 and FIG. 2, the power supply display means 4 is arranged next to the LED 30 arranged on the peripheral wall surface of the apparatus body 1 and arranged at intervals of 120 °.
[0013]
As shown in FIG. 1, the power source 5 is constituted by two so-called AA batteries, and is housed in a dry battery housing chamber 10.
[0014]
As shown in FIG. 3, the threshold setting device 6 is formed of a variable resistor. By changing the resistance value of the threshold setting device 6, a set value at which the moisture detection display means 3 is changed from the non-display state to the display state is set. It can be changed. In this setting, when the humidity in the air is high, the moisture detection display means 3 is not brought into the display state only by the moisture rate of the humidity, and the moisture rate is such that moisture is felt when touched by hand. In some cases, it is important that the moisture detection display means 3 is in a display state.
[0015]
The transistor 7 is an NPN type as shown in FIG. 3, and a known commercially available transistor is used.
[0016]
The switch 8 is of a push button type, and is provided at the end of the apparatus body 1 opposite to the side where the contacts 20 and 21 are provided, as shown in FIG. The switch 8 is maintained in an “ON” state when pressed from a non-pressed state, and is in a non-pressed state and is in an “OFF” state when pressed again from the pressed state.
(Functions when using the contact-type moisture detector W)
(1). Whether or not the surface of the detected portion is above a certain moisture content can be determined by whether or not the LED 30 that is the moisture detection display means 3 is lit in green and whether or not the buzzer 31 is ringing. Can be done instantly.
(2). Since the LEDs 30 as the moisture detection display means 3 are arranged on the peripheral wall surface of the apparatus main body 1 at intervals of 120 °, the user can visually recognize at least one LED 30 from any direction. That is, the direction of the apparatus main body 1 with respect to the user is not restricted to a specific direction, and the usability is very good.
(3). Since the positive contacts 20 and the negative contacts 21 constituting the detection unit 2 are alternately arranged in a hexagonal shape, the positive contact 20 and the positive contact 20 are almost sure even when the posture of the apparatus main body is perpendicular, acute, or obtuse with respect to the surface of the detection unit. The negative contact 21 comes into contact with the surface of the detected part. That is, the posture of the apparatus main body with respect to the surface of the detected part is not so constrained and the usability is very good.
(About the mode of use of the contact-type moisture detector W)
For example, when used to detect whether water or juice spills on a passenger train seat, make sure that at least a pair of positive contacts 20 and negative contacts 21 are in contact with the seat and backrest of the seat. While moving the contact type moisture detector W.
[0017]
In the middle of the movement of the contact-type moisture detector W, the LED 30 is lit in green and the buzzer 31 sounds when reaching a position where water or the like spills.
[0018]
Therefore, the user can instantly know the spillage of water and the position thereof, and can take measures such as drying the portion.
[Embodiment 2]
FIG. 4 is a perspective view of one end portion of the contact-type moisture detector W according to the embodiment of the present invention.
[0019]
The contact-type moisture detector W of the second embodiment and that of the first embodiment have almost the same configuration, but are different in the shape of one end of the apparatus main body 1 and the detection unit 2.
[0020]
That is, in the second embodiment, one end portion of the apparatus main body 1 is formed in a truncated cone shape, and an annular plus contact 20, a minus contact 21, and a plus contact 20 are sequentially arranged on the slope, and a convex shape is formed on the upper end surface. A positive contact 20 and a negative contact 21 are arranged.
[0021]
Therefore, also for the contact-type moisture detector W, as in the first embodiment, it can be instantaneously determined whether or not the surface of the detected part has a certain moisture content or more, and the direction of the apparatus main body with respect to the user, It is obvious that the apparatus body has a function that the posture of the apparatus main body with respect to the surface of the detected part is not restricted so much.
[Embodiment 3]
FIG. 5 is an overall perspective view of the contact-type moisture detector W according to the embodiment of the present invention.
[0022]
The contact-type moisture detector W of the third embodiment and that of the first embodiment have almost the same configuration, but are different in the shape of one end of the apparatus main body 1 and the detection unit 2.
[0023]
That is, in the third embodiment, one end portion of the apparatus main body 1 is formed in a substantially spherical shape, and a large number of hemispherical plus contacts 20 and minus contacts 21 are arranged on the one end portion. Therefore, it is clear that the contact-type moisture detector W of this embodiment has the same function as that of the first and second embodiments.
[Embodiment 4]
FIG. 6 is a perspective view of one end portion of the contact-type moisture detector W according to the embodiment of the present invention.
[0024]
The contact-type moisture detector W of the fourth embodiment and that of the first embodiment are almost the same in configuration, but differ only in the detection unit 2.
[0025]
In other words, in this embodiment, the positive contact 20 and the negative contact 21 serving as the detection unit 2 are arranged in parallel with rod bodies (or plate bodies) and the ridge lines thereof are formed in a substantially U shape (may be a substantially arc shape). As a thing.
[Embodiment 5]
In this embodiment, as shown in FIG. 7, the two contact-type moisture detectors W and W of the above-described embodiment 4 are attached to the horizontal rail e of the T-shaped handle E. If it does in this way, it can be judged at once about a wide range whether the to-be-detected part surface has more than a fixed moisture content.
[0026]
In this embodiment, the contact-type moisture detectors W of the first, second, and third embodiments may be as described above, and the number of contact-type moisture detectors W attached to the handle E may be three or more.
[0027]
When the above configuration is adopted, a dry battery as a power source may be accommodated in the handle portion of the handle E.
[Embodiment 6]
In this embodiment, as shown in FIG. 8, the brush H is provided with the four contact moisture detectors W of the embodiment 4 so that moisture detection and cleaning can be performed simultaneously. On the handle of the brush H, an LED 30 serving as the moisture detection display means 3 and an LED serving as the power supply display means 4 are provided.
[0028]
Note that the contact-type moisture detector W may be that of the first, second, and third embodiments.
[Embodiment 7]
FIG. 9 is an overall perspective view of the contact-type moisture detector W according to the embodiment of the present invention.
[0029]
The contact-type moisture detector W of the third embodiment and that of the first embodiment have almost the same configuration, but are different in the shape of one end of the apparatus main body 1 and the detection unit 2.
[0030]
That is, in the seventh embodiment, one end portion of the apparatus main body 1 is formed in a substantially triangular plate shape, and four positive contacts 20 and negative contacts 21 are alternately arranged in a line on the surface corresponding to the bottom side. doing. And LED30 which is the moisture detection display means 3 is arrange | positioned by the 90 degree space | interval on the surrounding wall surface of the apparatus main body 1, and it can be visually recognized now by two LED30 at the time of use.
[0031]
Therefore, in addition to having the basic function of the present invention, it is possible to judge in a wide range whether or not the surface of the detected part has a certain moisture content or more compared to that of the fifth embodiment. It is.
[Embodiment 8]
The electric circuit shown in FIG. 3 adopted in the contact-type moisture detector W of the first to seventh embodiments can be replaced with the electric circuit shown in FIG.
[0032]
In the case where the electric circuit shown in FIG. 3 is employed, when the moisture content portion that can be detected on the surface of the detected portion passes over about 0.05 seconds or more, it is used for visual or / and auditory judgment. The means (LED 30, buzzer 31) is turned on only for the time required for the passage, and the operator (measurer) can reliably recognize the detection result.
[0033]
However, when the time required for the passage of the detectable moisture content portion is less than 0.05 seconds due to, for example, the operator quickly moving the contact-type moisture detector W, the time for the buzzer 31 to be quiet and sound Is short (in the case of LED30, the display time is short), a situation occurs in which it cannot be recognized.
[0034]
The electric circuit of FIG. 11 shown in this embodiment is such that even if the time required to pass the detectable moisture content portion is less than 0.05 seconds, the operator can reliably recognize the detection result. A monostable multivibrator circuit MV (non-sinusoidal wave generation circuit) comprising an IC chip 90 and an integrating circuit (consisting of a variable resistor 91 and a capacitor 92) externally attached thereto is provided. In this electric circuit, the output time can be controlled by changing the resistance value of the variable resistor 91. For example, the LED 97 and the buzzer 98 can be set to the output state for about 0.1 seconds to 1.0 seconds even when the time required for passing the detectable moisture content portion is less than 0.05 seconds. Therefore, the operator can surely recognize the detection result regardless of the moving speed of the contact-type moisture detector W or the range of the detectable moisture content.
[0035]
In FIG. 11, reference numerals 20 and 21 are contacts, reference numeral 93 is a variable resistor 93 for adjusting moisture detection sensitivity, reference numeral 94 is an amplifier 94 for output amplification, reference numeral 95 is a main switch, reference numeral 96 is an ON state. LED that lights up when it is in the position, symbol 97 is an LED that lights for the time set by the 1-stable multivibrator circuit MV after detecting moisture on the surface of the detected portion, and symbol 98 detects moisture on the surface of the detected portion A buzzer that emits sound for a time set by the first stable multivibrator circuit MV is shown.
[Other Embodiments]
In the first embodiment, the positive contacts 20 and the negative contacts 21 are alternately arranged in a hexagonal shape. However, the positive contacts 20 and the negative contacts 21 are alternately adjacent to each other and are not limited to this. , Regular octagons, positive even numbers, and circles.
[0036]
In this embodiment, the moisture detection display means 3 includes an LED 30 for instantaneously judging whether or not the surface of the detected part has a moisture content of a certain level or more, and a buzzer for instantly judging auditorily. However, the present invention is not limited to this, and either one may be used.
[0037]
On the other hand, it is good also as a structure which attaches a rod-shaped handle to the one end of the contact-type moisture detector W of the said Embodiment 1-4 detachably, and, as shown in FIG. The handle A may be attached via the member B, and the handle A and the contact-type moisture detector W may be folded via the member B.
[0038]
Furthermore, in all the embodiments described above, the LEDs 30 as the moisture detection display means 3 are arranged at intervals of 120 ° on the peripheral wall surface of the apparatus main body 1. However, when the LEDs 30 are arranged at intervals of 180 ° or less, in use. Visible from any direction. Moreover, when LED30 is provided in the edge part of switch 8, it can be visually recognized from which direction by one LED30 at the time of use.
[0039]
【The invention's effect】
Since the present invention is configured as described above, it has the following effects.
[0040]
As is apparent from the contents of the embodiment of the invention, (1) it can be instantaneously determined whether or not there is a place with a moisture content above a certain level on the surface of the detected part, and (2) the device body for the user. The contact type moisture detector in which the orientation and the posture of the apparatus main body with respect to the surface of the detected part are not so restricted can be provided.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a contact-type moisture detector according to Embodiment 1 of the present invention.
FIG. 2 is a diagram showing an arrangement of positive and negative contacts of the contact-type moisture detector, LEDs of moisture detection display means, and LEDs constituting power supply display means.
FIG. 3 is a diagram of an electric circuit used in the contact-type moisture detector.
FIG. 4 is a perspective view of one end of a contact-type moisture detector according to Embodiment 2 of the present invention.
FIG. 5 is an overall perspective view of a contact-type moisture detector according to Embodiment 3 of the present invention.
FIG. 6 is a perspective view of one end of a contact-type moisture detector according to Embodiment 4 of the present invention.
FIG. 7 is an overall perspective view of a contact-type moisture detector according to Embodiment 5 of the present invention.
FIG. 8 is an overall perspective view of a contact-type moisture detector according to Embodiment 6 of the present invention.
FIG. 9 is an overall perspective view of a contact-type moisture detector according to a seventh embodiment of the present invention.
FIG. 10 is an overall perspective view of a contact-type moisture detector according to another embodiment.
FIG. 11 is a diagram of an electric circuit according to another embodiment.
12 is an explanatory diagram of a monostable multivibrator circuit constituting the electric circuit of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus body 2 Detection part 3 Moisture detection display means 4 Power supply display means 5 Power supply
20 Positive contact
21 Negative contact MV 1 stable multivibrator circuit (non-sinusoidal wave generation circuit)

Claims (4)

  In addition to having a handle (E) that can be gripped by the user, the user uses the handle (E) with his / her hand, and the detection unit (2) contacts the seat and backrest of the seat. It is a contact type moisture detector which can instantaneously determine in which part of the seat portion and backrest of the seat the moisture content is above a certain level by moving the device body (1). ), A plurality of positive contacts (20) and a plurality of negative contacts (21) are projected to form the detection part (2), and all the positive contacts (20) and all the negative contacts (21) are in an electrically connected state, and when the resistance value between at least one positive contact (20) and negative contact (21) is below a certain level, The moisture detection display means (3) By disposing the moisture detection display means (3) on the peripheral wall surface of the apparatus body (1) at intervals of 180 ° or less, the moisture detection display means (3) can be viewed from any direction during use. A contact-type moisture detector.   The detection unit (2) is projected from the end of the apparatus body (1), and the positive contact (20) and the negative contact (21) serving as the detection unit (2) are arranged in parallel with a rod or plate. The contact type moisture detector according to claim 1, wherein the ridge line is formed in a substantially U shape or a substantially arc shape.   When the voltage of the power source (5) is lowered to a state where the moisture detection display means (3) cannot be displayed, a power supply display means (4) which is in a non-display state is provided, and the power supply display means (4) is in use. The contact type moisture detector according to claim 1 or 2, wherein the number and the position are set so as to be visible from any direction.   The detection signal generated when the resistance value between the positive contact (20) and the negative contact (21) falls below a certain value is input to the non-sine wave generation circuit, and the detection signal is generated from the non-sine wave generation circuit. A pulse signal of a long time is generated, and the moisture detection display means (3) is set in the output state only for the generation time of the pulse signal. The output time of the pulse signal from the non-sinusoidal wave generation circuit is 0. The contact moisture detector according to any one of claims 1 to 3, wherein the contact moisture detector is 1 second to 1.0 second.

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