JP6851590B2 - Detection output device - Google Patents

Description

The present invention simply and accurately measures and detects physical quantities such as the strength and direction of an invisible electric field, the flow velocity density and direction of an ion flow, and outputs the detection result. The present invention relates to a detection output device having excellent accuracy and non-invasiveness and capable of easily grasping an invisible physical quantity.

In recent years, technologies and devices that use electric fields and ions, and technologies and devices that generate electric fields and ions are widely used. In addition, positively or negatively charged ions are suspended in the atmosphere, and a strong electric field may be generated by a natural phenomenon such as static electricity or lightning. However, invisible physical quantities and chemical activities such as electric fields and ions make it difficult for even experts and experts to quickly and accurately grasp the target electric fields and ions. It is difficult for those who do not have specialized knowledge about electric fields and ions, such as users of technology and equipment, to understand and imagine the target electric fields and ions. For example, as an example of using an electric field, there is an electric potential treatment device that applies a high voltage to an insulated human body and performs treatment by utilizing the biostimulating action of the electric field formed around the human body. When using such a device, it is difficult for the subject to recognize that an electric field is formed around them. In addition, DC electric field is generated in DC power transmission and dust collectors, used in electrostatic coating that utilizes the property of moving charged liquids and powders by electrostatic force, friction of clothes, etc. It is generated in the form of static electricity, but it is difficult to visually recognize this. Further, as an example of using ions, there are a static eliminator that ionizes air molecules to eliminate static electricity, a deodorizer, a health appliance, and the like, but it is difficult to recognize the ions released in the space.

As a method for recognizing that an electric field is formed as an example of an invisible physical quantity, for example, a probe capable of detecting an electric field is used, and a metal probe is connected to a detection system via a metal cable. An electric field measuring device is known (see, for example, Patent Document 1). In this electric field measuring device, in order to suppress invasiveness, a probe tip made of an electro-optical crystal is connected to an optical detection system with an optical fiber cable, and the tip of the probe is inserted into an electric field for electric field detection and measurement. Is to do. Here, invasiveness refers to the property that the electric field to be measured is disturbed by an external factor.

In addition, the potential of the reference point is measured to be the reference potential, the difference (voltage) from the reference potential is measured for one point near an arbitrary measurement target, and the value obtained by dividing it by the distance between the two points is the electric field. There is known a voltage detector that detects and notifies the formed electric field (see, for example, Patent Document 2). This voltage detector determines the presence or absence of an electric field.

However, when a metal probe is inserted into an electric field, the electric field to be measured is disturbed by the probe or cable, and highly invasiveness is exhibited. Therefore, the inventor of the present application has proposed an electric field detection output device provided with output means by a plurality of LEDs or the like between flat electrode-shaped electrodes (see, for example, Patent Document 3). In this electric field detection output device, when electric charge is induced in the electrodes by the electric field and a current flows between the electrodes, the current value is detected by the virtual ground type current detector, and the number of LEDs to be turned on according to the current value is determined. By changing it, the strength of the electric field is displayed.

In addition, as an example of recognizing a DC electric field, a surface potential measuring method for measuring the surface potential of an object to be measured such as a conductor or an insulator, and as an example of recognizing ions in the air, for example, a flow path through which a gas flows. There is known an atmospheric ion concentration measuring device provided with the above (see, for example, Patent Documents 4 and 5). This atmospheric ion concentration measuring device includes an inner cylinder for measuring the concentration of atmospheric ions in the flow path, a current value detector, and a wind speed sensor for detecting the wind speed in the flow path.

Japanese Unexamined Patent Publication No. 2012-053017 Japanese Patent No. 4562587 WO2015 / 111656 Japanese Unexamined Patent Publication No. 07-104019 Japanese Unexamined Patent Publication No. 2010-071652

By the way, the electric field measuring device described in Patent Document 1 has reduced invasiveness, but has a complicated configuration, is difficult to carry due to the large size of the device, and is not convenient. .. Further, the voltage detector described in Patent Document 2 determines the presence or absence of an electric field, and cannot accurately measure the electric field to grasp the strength. Further, in the electric field detection output device described in Patent Document 3, when a DC electric field such as static electricity is to be detected, if there is no configuration for calculating the time integral value of the calculated current value, the electric field strength can be accurately measured. It became clear that it could not be done. Furthermore, the surface potential measuring method described in Patent Document 4 and the atmospheric ion concentration measuring device described in Patent Document 5 also have a problem that they are not convenient because the device becomes large in size.

Therefore, in the present invention, in order to easily and accurately measure and output an electric field, particularly when the electric field is a DC electric field, or the flow velocity density and direction of an ion flow, the user can easily grasp it. It is an object of the present invention to provide a detection output device having excellent convenience, promptness, accuracy, non-invasiveness, and excellent spatial resolution.

In order to solve the above problems, the invention according to claim 1 is a flat plate-shaped detection output device that detects an invisible detection target in space and outputs the detected result, and is arranged substantially in parallel. A virtual ground-type current detector, which is arranged between the two flat plate-shaped electrodes and detects a current generated when the detection target is detected by the two electrodes, and the above two electrodes. It is provided with an output means arranged between the electrodes to output according to the current, and a power source arranged between the two electrodes to supply power to the light emitting device drive circuit and the output means. The virtual grounded current detector is characterized by including an integrating circuit that time-integrates the current generated between the two electrodes.

In the present invention, when an electric charge is induced in an electrode by an electric field, a current flows between the two electrodes, and a virtual grounded current detector detects this current. The output means outputs when the virtual grounded current detector detects the electrode current and determines that it has reached a certain threshold value. In addition, the virtual grounded current detector includes an integrator circuit that integrates the current generated between the two electrodes over time.

The invention according to claim 2 is characterized in that, in the detection output device according to claim 1, the integrator circuit is an analog integrator circuit composed of an operational amplifier, a resistor, and a capacitor.

The invention according to claim 3 is the detection output device according to any one of claims 1 or 2 , wherein the virtual grounded current detector is a bipolar amplifier and a bias circuit that respond to both positive and negative polarities of the current. It is characterized by having.

The invention according to claim 4 is the detection output device according to any one of claims 1 to 3 , wherein the detection target is an electric field, and the two electrodes detect the strength of the electric field. It is characterized by that.

The invention according to claim 5 is the detection output device according to any one of claims 1 to 3 , wherein the detection target is an ion, and the two electrodes adhere to the flow velocity density of the ion flow. It is characterized by detecting.

According to a sixth aspect of the present invention, in the detection output device according to the fifth aspect , the two electrodes are covered with an insulating film, and the flow velocity density of the ion flow adhering to the insulating film is detected. It is a feature.

The invention according to claim 7 is the detection output device according to any one of claims 5 or 6 , wherein when the ions adhere to the two electrodes more than a predetermined amount, the refresh device removes the ions. It is characterized in that it is provided.

The invention according to claim 8 is the detection output device according to any one of claims 1 to 7 , wherein the output means includes a plurality of light emitting elements, and a different number of the detection output means correspond to the detection target. The light emitting element emits light.

The invention according to claim 9 is characterized in that, in the detection output device according to any one of claims 1 to 7 , the output means emits light in different hues corresponding to the detection target. ..

The invention according to claim 10 is the detection output device according to any one of claims 1 to 7 , wherein the output means is a light emitting element, and the light emitting element is arranged between the two electrodes. It is provided and is characterized in that it emits light in a direction perpendicular to the surfaces of the two electrodes.

The invention according to claim 11 includes a grip portion formed of an insulator and projecting outward from the two electrodes in the detection output device according to any one of claims 1 to 10. , Characterized by.

According to the invention of claim 1, since the integrator circuit for time-integrating the current generated between the two electrodes is provided, for example, the electric field strength can be accurately measured with a sensitivity independent of the frequency of the electric field. It can be output and the user can easily grasp it. In addition, since the virtual grounded current detector equipped with this integrator circuit is arranged between the two flat electrodes, it is excellent in convenience, promptness, accuracy, non-invasiveness, and excellent spatial resolution. It becomes possible to provide a detection output device.

According to the second aspect of the present invention, since the analog integrator circuit including the operational amplifier, the resistor, and the capacitor is provided, it is possible to detect and output the DC electric field.

According to the third aspect of the present invention, since the virtual grounded current detector includes a bipolar amplifier and a bias circuit that respond to both positive and negative polarities of the current, it is possible to determine the polarity of the electric field.

According to the invention of claim 4 , the detection target is an electric field, and electric charges are induced in the two electrodes, and the electric field is detected from the current value of the current generated by the electric charges. Therefore, the detection output device of the present invention detects the electric field. It can be applied to the output device.

According to the invention of claim 5 , since the detection target is an ion and the two electrodes detect the flow velocity density of the ion flow adhering to the electrode, the detection output device of the present invention is applied to the ion detection output device. Will be possible.

According to the invention of claim 6 , the two electrodes are covered with an insulating film, and the flow velocity density of the ion flow adhering to the insulating film is detected. Since the polar charge is charged, it becomes possible to provide a detection and output device having excellent non-invasiveness.

According to the invention of claim 7 , when two or more ions adhere to one or more electrodes more than a predetermined value, the charge-up due to the ions can be reset by providing the refresh device for removing the ions. Become. As a result, when the ion flux is large, the amount of accumulated ions becomes excessive, which prevents the subsequent ion flow from being affected or the detection circuit from being saturated, and the flow velocity density of the ion flow can be measured stably. it can.

According to the invention of claim 8 , since the output means includes a plurality of light emitting elements and a different number of light emitting elements emit light according to the detection target, a detection output device having excellent promptness and accuracy is realized. Will be possible.

According to the invention of claim 9 , since the output means emits light in different hues according to the detection target, it is possible to realize a detection output device having excellent breaking news and accuracy.

According to the invention of claim 10 , the output means is composed of a light emitting element, and the light emitting element is arranged between the two electrodes so as to emit light in a direction perpendicular to the surface of the electrodes. Since it is possible to recognize that light is emitted from the surface side of the electrode, it is possible to improve the visibility of the detection output device.

According to the invention of claim 11 , since the grip portion formed of an insulator and projecting outward from the two electrodes is provided, the measurer's hand or the like directly with respect to the space for detecting the detection target or the like. It is possible to realize an electric field detection output device having excellent non-invasiveness because there is no need to insert.

It is a figure which shows the outline of the detection output device 1 which concerns on Embodiment 1 of this invention, is the perspective view (a) which shows the appearance of the detection output device 1, and block block diagram (b) which shows the function of the detection output device 1. Is. It is a circuit diagram which shows the example which includes the bipolar amplifier and the bias circuit as the virtual ground type current detector 3 of FIG. It is a circuit diagram which shows the example which includes the circuit 3A as the virtual ground type current detector 3 and the integration part 4 of FIG. It is a circuit diagram which shows the example which includes the integration part 4A as the integration part 4 of FIG. It is a circuit diagram which shows the example which includes the integration part 4B as the integration part 4 of FIG. It is the schematic which shows the state which inserted the detection output device 1 of FIG. 1 in the direction perpendicular to the electric field direction. It is the schematic which shows the example which inserted the detection output device 1A which concerns on Embodiment 2 of this invention into an ion flow 201. It is a block block diagram which shows the function of the detection output device 1A of FIG. It is a schematic diagram which shows the example of staticifying the ion adhering to the detection output device 1A of FIG. 7 using the static elimination pad 300. FIG. 7 is a schematic view showing an example of detecting ions using the detection output device 1A of FIG. 7, a schematic view (a) showing an example of detecting a flowing ion I using the detection output device 1A, and a detection output device. It is a schematic diagram (b) which shows the example of detecting a stationary ion I using 1A. It is a figure which shows the outline of the detection output device 1B which concerns on Embodiment 3 of this invention, the perspective view (a) which shows the appearance of the detection output device 1B, and the sectional view (b) which shows the internal structure of the detection output device 1B. Is.

Hereinafter, the present invention will be described based on the illustrated embodiment.

(Embodiment 1)
1 to 6 show a first embodiment of the present invention, and FIG. 1 is a perspective view (a) showing the appearance of the detection output device 1 and a block configuration diagram showing the functions of the detection output device 1. b). Further, FIG. 2 is a circuit diagram showing an example in which a bipolar amplifier and a bias circuit are provided as the virtual ground type current detector 3 of FIG. The detection output device 1 according to the first embodiment of the present invention emits a numerical value, an intensity, a direction, or a flow of a detection target existing in this space by being inserted into a predetermined space. It is a device for displaying by the number of light emitting elements to be detected. For example, the strength of a DC electric field is displayed by the light emission of the light emitting element as a detection target, and the distribution of the electric field is grasped by scanning this device in space. It is a device for grasping the direction of the electric field by rotating scanning inside. Here, the DC electric field is not limited to the case where a constant current value is always exhibited, and the polarity of the current is defined as in the case where the electric field strength is measured within a quarter cycle of an AC electric field having a low frequency. It is a concept that includes the case where there is no change and the approximate current value does not change, or the case where the electric field gradually approaches a constant value from zero, such as the change in the electric field in the state transition process immediately after the DC switch is turned on. ..

As shown in FIG. 1A, the detection / output device 1 mainly includes an electrode 2 and an LED (output means / light emitting element) 5, and a grip portion 8 is attached to the detection / output device 1. Further, the functional block configuration of the detection output device 1 is, for example, as shown in FIG. 1B, an electrode 2, a virtual ground type current detector 3, an integrating unit (integrating circuit) 4, an LED 5, and a battery. It is composed of a (power supply) 6 and a short-circuit switch 7, and a virtual ground-type current detector 3, an integrating unit 4, an LED 5, a battery 6, and a short-circuit switch 7 are formed so as to be housed between two electrodes 2. ..

As shown in FIG. 1A, the electrode 2 is two substantially rectangular flat plate electrodes arranged so as to face each other substantially in parallel, and is composed of an upper electrode 2a and a lower electrode 2b. It is formed by setting the electrode spacing d and the electrode area s. The size (electrode spacing d, electrode area s) and shape of the upper electrode 2a and the lower electrode 2b are set according to restrictions such as the space to be detected, and virtual grounding type current detection is performed according to the size and shape. The device 3, the integrating unit 4, the LED 5, the battery (power supply) 6, and the short-circuit switch 7 are selected and determined so as to be accommodated. Specifically, the electrode spacing d is set to, for example, several mm or less, and the electrode area s is set to, for example, about 50 cm ² or less so as to be about the size of a business card.

As shown in FIG. 1B, the virtual grounded current detector 3 detects the current generated when an electric charge is induced in the upper electrode 2a and the lower electrode 2b, and detects the upper electrode 2a and the lower electrode 2b. It is connected to a signal line and is configured to include a detector to detect current. As shown in FIG. 2, for example, the virtual ground type current detector 3 includes an operational amplifier (operational amplifier) 31 having virtual ground characteristics and resistors 32, 33, and 34, and inverts the operational amplifier 31. An upper electrode 2a is connected to the input terminal of the input (-), a lower electrode 2b is connected to the input terminal of the non-inverting input (+), and an integrating unit 4 is connected to the output terminal of the operational amplifier 31, and the positive power supply voltage Vcc and It is operated by the negative power supply voltage-Vcc. Further, the operational amplifier 31 has a virtual ground characteristic, and the voltages of the input terminals of the non-inverting input (+) and the inverting input (−) are always equal, that is, they have the same potential. That is, since the lead wires connected to the upper electrode 2a and the lower electrode 2b are connected to the input terminals (non-inverting input (+) and inverting input (-)) of the virtual grounded current detector 3, the upper electrode No potential difference is generated between 2a and the lower electrode 2b. Further, the operational amplifier 31 is composed of a bipolar amplifier that determines the polarity of the electric field. The resistors 33 and 34 form a bias circuit.

Since the input terminal of the virtual grounded current detector 3 is connected to the upper electrode 2a and the lower electrode 2b by a conducting wire, when the detection output device 1 is placed in an electric field, the upper electrode 2a and the lower electrode 2b become Are induced to have different polarities, and the current generated at that time is detected. At this time, due to the virtual grounding characteristic of the virtual grounding type current detector 3, no potential difference is generated between the upper electrode 2a and the lower electrode 2b, so that the detection output device 1 operates as a metal plate having a thickness d. Can be regarded as.

The integrating unit 4 is a device for time-integrating the current value detected by the virtual ground type current detector 3, and when the electric field to be measured is a direct current, the integrating unit 4 uses the following equation for the current value. Calculated by. Here, I is the current value, t is the time, ε is the dielectric constant, s is the electrode area, and E (t) is the electric field strength. That is, the calculated time integral value of the current value I is proportional to the electric field strength E (t).

Here, an example of another circuit configuration in the virtual ground type current detector 3 will be described. FIG. 3 is a circuit diagram showing an example in which a circuit 3A is provided as the virtual grounded current detector 3 and the integrating unit 4 of FIG. This circuit 3A includes an operational amplifier 31 having virtual ground characteristics, resistors 33 and 34, and a capacitor 35, and an upper electrode 2a is provided at the input terminal of the inverting input (-) of the operational amplifier 31 as a non-inverting input (+). The lower electrode 2b is connected to the input terminal of, and the LED 5 is connected to the output terminal of the operational amplifier 31, and they are operated by the positive power supply voltage Vcc and the negative power supply voltage −Vcc. The operational amplifier 31 and the resistors 33 and 34 are the same as the operational amplifier 31 and the resistors 33 and 34 shown in FIG. 2, and the operational amplifier 31 and the capacitor 35 form an integrator. Even with such a circuit configuration, the same effect as that of the virtual grounded current detector 3 and the integrating unit 4 can be obtained.

FIG. 4 is a circuit diagram showing an example in which an integrator 4A is provided as the integrator 4 of FIG. This circuit 4A includes an operational amplifier 41, a capacitor 42, and resistors 43, 44, 45, and constitutes an analog integrator circuit. The virtual ground type current detector 3 is connected to the input terminal of the inverting input (-) of the operational amplifier 41 via a resistor 43, and the positive power supply voltage Vcc is connected to the input terminal of the non-inverting input (+) via resistors 44 and 45. And negative power supply voltage-Vcc, LED5 is connected to the output terminal of the operational amplifier 41, respectively, and is operated by positive power supply voltage Vcc and negative power supply voltage-Vcc. Even with such a circuit configuration, the same effect as that of the integrating unit 4 can be obtained.

FIG. 5 is a circuit diagram showing an example in which the integrator 4B is provided as the integrator 4 of FIG. This circuit 4B includes an MPU (Micro Processing Unit) 46. The MPU 46 has a circuit configuration as shown in FIG. 4 implemented by an integrated circuit. Even with such a circuit configuration, the same effect as that of the integrating unit 4 can be obtained.

The LED 5 is a device that outputs (for example, emits light) according to the current value detected by the virtual grounding type current detector 3 and calculated by the integrating unit 4, and is composed of, for example, LEDs 5a, 5b, 5c, and 5d. ing. When the current values of the LEDs 5a, 5b, 5c, and 5d detected by the virtual grounding type current detector 3 and calculated by the integrating unit 4 are zero to a predetermined value, the LEDs 5a, 5b, 5c, and 5d emit light. However, when the current value detected by the virtual ground type current detector 3 is larger than the predetermined value, only the LED 5a emits light, the LEDs 5a and 5b emit light, and the LEDs 5a and 5b depend on the magnitude of the current value, that is, the electric field strength. , 5c emits light, LEDs 5a, 5b, 5c, 5d emit light, and so on, the number of emitting LEDs changes.

As shown in FIG. 1B, the battery 6 supplies electric power to the virtual grounded current detector 3, the integrating unit 4, and the LED 5, and is composed of, for example, a coin-type battery.

The short-circuit switch 7 is a switch for short-circuiting between the upper electrode 2a and the lower electrode 2b. The short-circuit switch 7 is a device used to reset the offset of charge accumulation generated by noise or the like by closing it, and to enable detection at a zero electric field level by opening it. When the detection output device 1 is allowed to stand in the DC electric field with the short-circuit switch 7 opened and the detection at the zero electric field level started, the accumulated charge increases according to the gradually increasing DC electric field value, and the accumulated charge increases accordingly. The current is also detected, and its integrated value indicates the electric field value. Then, when the detection output device 1 is moved to a place where there is no electric field, the accumulated charges are also canceled out. At this time, the upper electrode 2a and the lower electrode 2b should not have charge accumulation or charge bias, but there is a possibility that charge accumulation or charge bias may occur due to noise or the like, which affects the next measurement. Sometimes. A short-circuit switch 7 is provided in order to reset such charge accumulation and charge bias.

The grip portion 8 is a rod-shaped member for the operator to move the detection output device 1. The grip portion 8 is formed so as to project outward from the upper electrode 2a and the lower electrode 2b, but is formed so as to project sufficiently away from the upper electrode 2a and the lower electrode 2b. desirable.

Next, the usage and operation of the detection output device 1 will be described.

FIG. 6 is a schematic view showing a state in which the detection output device 1 of FIG. 1 is inserted in a direction perpendicular to the electric field direction of the DC electric field formed by the electric field electrodes 100a and 100b. Here, the electric field electrodes 100a and 100b are each formed of a flat plate, and the two electric field electrodes 100a and 100b are arranged so as to form a predetermined angle. Here, the distance L indicates a length at which the electric field to be measured can be regarded as a constant value, and the electrode spacing d is set so as to be sufficiently smaller than this distance L. Further, the area S indicates an area where the electric field to be measured can be regarded as a constant value, and the electrode area s is set so as to be sufficiently smaller than this area S. Further, the arrow X between the electric field electrodes 100a and 100b is a line of electric force, indicating that an electric field is generated in this direction.

When the user already knows the electric field direction, the user inserts the detection output device 1 in the electric field formed by the electric field electrodes 100a and 100b in the direction perpendicular to the electric field direction, as shown in FIG. And let it stand still. At this time, electric charges are induced in the upper electrode 2a and the lower electrode 2b, and the current generated when the induced electric charges change is detected by the virtual grounded current detector 3, time-integrated by the integrating unit 4, and the current value. Is calculated. Based on the current value detected by the virtual grounded current detector 3 and calculated by the integrating unit 4, only the LED 5a emits light, the LEDs 5a, 5b emit light, the LEDs 5a, 5b, 5c emit light, or the LEDs 5a, 5b, 5c. , 5d emits light in stages, so that the user can grasp the electric field strength by the number of LEDs emitting light at this time.

Further, when the user does not know the electric field direction, when the user inserts the detection output device 1 diagonally with respect to the electric field direction into the electric field formed by the electric field electrodes 100a and 100b and stands still, the upper part is formed. An electric charge is induced in the electrode 2a and the lower electrode 2b, and the current generated when the induced electric charge changes is detected by the virtual ground type current detector 3, and the electric field detection output device 1 is oriented as shown in FIG. Since a reverse current is generated as the electric charge decreases, the current value is calculated by time-integrating this current value with the integrating unit 4. For example, when the electric field detection output device 1 is inserted in the direction shown in FIG. 6, and both LEDs 5a, 5b, 5c, and 5d are emitting light, when the electric field detection output device 1 is inserted in an oblique direction, for example, Only the LED 5a emits light, the LEDs 5a and 5b emit light, or the LEDs 5a, 5b and 5c emit light. Therefore, the user can grasp that the electric field strength is weak depending on the number of LEDs emitting light at this time. Further, by moving the electric field detection output device 1 on the spot, the number of emitting lights of the LEDs 5a, 5b, 5c, and 5d changes, so that the electric field direction can be grasped by the change.

Further, for example, when the user inserts the detection output device 1 in the electric field formed by the electric field electrodes 100a and 100b in a direction parallel to the electric field direction and stands still, the standing direction of the upper electrode 2a and the lower electrode 2b Since the electric field coincides with the electric field direction, the electric charge is not induced, so that the electric charge does not change, and the current value is calculated by time-integrating this current value by the integrating unit 4, but when the current value is 0, the current value is calculated. Even if the value is time-integrated, it is 0, so no current is detected. Therefore, the LEDs 5a, 5b, 5c, and 5d remain in the non-light emitting state. Therefore, the user can grasp that the electric field direction coincides with the stationary direction of the upper electrode 2a and the lower electrode 2b due to the non-emission state of the LEDs 5a, 5b, 5c, and 5d. This makes it possible to use it as a visualization device that superimposes a state in which an electric field is detected and emits light on an optical image and displays and records it as a figure on one screen.

As described above, according to the detection output device 1, when the electric field detection output device 1 is inserted into the electric field, electric charges are induced in the upper electrode 2a and the lower electrode 2b, and the current generated by this is a virtual ground type. When detected by the current detector 3, any or all of the LEDs 5a, 5b, 5c, and 5d emit light based on the electric field strength of the electric field. Can be grasped. Therefore, by reducing the size of the entire device of the electric field detection output device 1 while maintaining the aspect ratio between the length of the side of the electrode and the distance between the two electrodes, the non-invasiveness of the device in the electric field is maintained. As a result, the resolution is improved as compared with the conventional electric field detection output device, so that it is possible to realize an electric field detection output device excellent in convenience, promptness, accuracy, and non-invasiveness.

Further, since the integrating unit 4 is provided, the detected current value is time-integrated according to the increase / decrease in electric charge to detect the electric field. Therefore, even if the detection target is a DC electric field, the detection output device 1 can be used. It will be possible to use it. Further, since the virtual ground type current detector 3 is provided with an operational amplifier 31 that responds to both positive and negative polarities, it is possible to determine the polarity of the electric field by rotationally scanning the detection output device 1.

Further, since the grip portion 8 is provided to prevent the electric field from being disturbed, it is possible to realize an electric field detection output device having excellent non-invasiveness.

(Embodiment 2)
FIG. 7 is a schematic view showing an example in which the detection output device 1A according to the second embodiment of the present invention is inserted into the ion flow 201. FIG. 8 is a block configuration diagram showing the functions of the detection output device 1A of FIG. 7. Further, FIG. 9 is a schematic view showing an example in which the ions adhering to the detection output device 1A of FIG. 7 are statically eliminated by using the static elimination pad 300. As shown in FIG. 7, the detection output device 1A is a device for detecting the flow velocity density of ions I by being inserted into the ion flow 201 generated by emitting ions I from the ion source 200 in the direction of the arrow. is there. As shown in FIG. 8, the detection output device 1A is implemented in that it does not include the integrating unit 4 of the detection output device 1 according to the first embodiment and that the electrode 2 is covered with an insulating film. It is different from the detection output device 1 according to the first embodiment. The reason why the electrode 2 is covered with an insulating film is to prevent the electrode from being corroded by directly adhering ions I having high chemical activity to the metal electrode.

Further, as shown in FIG. 9, the detection output device 1A is provided with a static elimination pad (refresh device) 300 for removing static ions I attached to the detection output device 1A, and is provided on the upper part of the detection output device 1A. It is used by bringing the electrode 2a and the lower electrode 2b into contact with each other. In this static elimination pad 300, if the ion flux of ions I attached to the upper electrode 2a and the lower electrode 2b of the detection output device 1A is large, the accumulated amount of ions I becomes excessive and affects the subsequent ion flow. It may cause saturation of the detection circuit and is provided to prevent this. Other configurations are the same as those of the electric field detection output device 1 according to the first embodiment.

Next, the usage method and operation of the detection output device 1A will be described.

FIG. 10 is a schematic view showing an example of detecting ions using the detection output device 1A of FIG. 7, and is a schematic view (a) showing an example of detecting flowing ions I using the detection output device 1A. It is a schematic diagram (b) which shows an example of detecting a stationary ion I using the detection output device 1A. Here, in the ion flow 201 shown in FIG. 7, the ion I may flow in a predetermined direction or may be suspended in a certain space, and each case will be described.

As shown in FIG. 10A, when the ion I is flowing in the predetermined direction as shown by the arrow Y, the ion I is allowed to stand in the ion flow 201 (predetermined operation) by placing the detection output device 1A in the ion flow 201. Will adhere to the electrode 2. Then, electric charges are induced in the upper electrode 2a and the lower electrode 2b to generate a current, which is detected by the virtual grounded current detector 3. Based on the current value detected by the virtual grounded current detector 3, some or all of the LEDs 5a, 5b, 5c, and 5d emit light. As a result, the user can grasp the flow velocity density of the ion flow from the number of LEDs emitting light at this time.

Further, as shown in FIG. 10B, when the ion I is suspended, the ion I moves in the direction of the arrow Z (predetermined operation) in the ion flow 201 in the detection output device 1A, so that the ion I becomes the electrode 2. Will adhere to. Then, electric charges are induced in the upper electrode 2a and the lower electrode 2b to generate a current, which is detected by the virtual grounded current detector 3. Based on the current value detected by the virtual grounded current detector 3, some or all of the LEDs 5a, 5b, 5c, and 5d emit light. As a result, the user can grasp the flow velocity density of the ion flow from the number of LEDs emitting light at this time.

As described above, according to the electric field detection output device 1A, the electrode 2 is covered with an insulating film, and is set to stand still in the ion flow 201 or moves in the ion flow 201 in the arrow Z direction. By performing the operation, it becomes possible to detect ions. Further, by providing the static elimination pad 300, it becomes possible to reset the charge-up by ions. As a result, when the ion flux is large, the amount of accumulated ions becomes excessive, which prevents the subsequent ion flow from being affected or the detection circuit from being saturated, and the flow velocity density of the ion flow can be measured stably. it can.

(Embodiment 3)
FIG. 11 is a diagram showing an outline of the detection output device 1B according to the third embodiment of the present invention, a perspective view (a) showing the appearance of the detection output device 1B, and a cross section showing the internal structure of the detection output device 1B. FIG. (B). Similar to the detection output device 1 according to the first embodiment, the detection output device 1B is inserted into a predetermined space to obtain the strength of a detection target (for example, a DC electric field) existing in this space. Is displayed according to the emission color or light intensity of the light emitting element, and the distribution of the electric field is grasped by scanning this device in space, and the direction of the electric field is grasped by rotating scanning in space. .. As shown in FIG. 11, the detection output device 1B includes an upper electrode 2Ba and a lower electrode 2Bb instead of the upper electrode 2a and the lower electrode 2b of the detection output device 1 according to the first embodiment, LED5a, An LED 5B is provided instead of the 5b, 5c, and 5d, a virtual ground type current detector 3, an integrating unit 4, an LED 5B, a battery 6, and a circuit unit 10 constituting a short-circuit switch 7 are provided, and an optical waveguide diffusion unit. 8 is provided, which is different from the detection output device 1 according to the first embodiment. The virtual ground type current detector 3, the integrating unit 4, the battery 6, and the short-circuit switch 7 are not shown.

The upper electrode 2Ba and the lower electrode 2Bb are two flat plate electrodes arranged so as to face each other in substantially parallel manner, and are formed in a substantially circular shape, for example. The electrode spacing and electrode area of the upper electrode 2Ba and the lower electrode 2Bb are set according to restrictions such as the space to be detected, similarly to the upper electrode 2a and the lower electrode 2b. Further, as shown in FIG. 11B, a substantially circular through hole is provided at a substantially central portion of the upper electrode 2Ba.

The LED 5B is a light emitting element that emits light according to the current value detected by the virtual grounded current detector 3, and changes the emission color according to the current value detected by the virtual grounded current detector 3, for example. It is an RGB type light emitting element or a monochromatic light emitting element that changes the light emitting intensity according to the current value. The LED 5B is embedded in the circuit unit 10 and arranged, and the emitted light passes through the optical waveguide diffusion unit 8 in the direction toward the upper surface side of the upper electrode 2Ba (perpendicular to the surfaces of the upper electrode 2Ba and the lower electrode 2b). It is provided so as to emit light in the direction of).

The optical waveguide diffusion unit 8 is a device that diffuses the light emitted by the LED 5B toward the upper surface side of the upper electrode 2Ba, and is composed of, for example, a light guide plate or the like. The optical waveguide diffusion unit 8 is arranged between the upper electrode 2Ba and the lower electrode 2Bb so as to be fitted in the through hole of the upper electrode 2Ba.

The circuit unit 10 is a flat plate-shaped substrate constituting the virtual grounded current detector 3, the integrating unit 4, the LED 5B, the battery 6, and the short-circuit switch 7, and is arranged between the upper electrode 2Ba and the lower electrode 2Bb. It is formed in a ring shape so as to be.

The method of using the detection output device 1B is the same as that of the detection output device 1 according to the first embodiment. According to the detection output device 1B, the upper electrode 2Ba is provided with a through hole, and the LED 5B is arranged between the upper electrode 2Ba and the lower electrode 2Bb so as to emit light in the direction of the through hole. Since it is possible to recognize that light is being emitted from the upper electrode 2Ba side, it is possible to improve the visibility of the detection output device 1B. Further, since the optical waveguide diffusion unit 8 is arranged between the upper electrode 2Ba and the lower electrode 2Bb so as to be fitted in the through hole of the upper electrode 2Ba, the light of the LED 5B is diffused to detect and output. It becomes possible to further improve the visibility of the device 1B. In the present embodiment, the upper electrode 2Ba is provided with a through hole, but the lower electrode 2Bb is provided with a through hole to expose the optical waveguide diffusion portion 8, and the light emitted by the LED 5B is emitted from the lower surface side of the lower electrode 2Bb. It may be diffused in the direction, and further, through holes are provided in both the upper electrode 2Ba and the lower electrode 2Bb to expose both the upper and lower end faces of the optical waveguide diffusion portion 8, and the light emitted by the LED 5B is emitted from the upper surface of the upper electrode 2Ba. It may be diffused in both the side and the lower surface side of the lower electrode 2Bb.

Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range that does not deviate from the gist of the present invention. Included in the invention. For example, in the above embodiment, the detection target of the detection output device 1 is an electric field, and the detection target of the detection output device 1A is an ion. It is possible to detect numerical values or intensities of sound fields, radiation, environmental substances, and other physical quantities and chemical activities such as directions. By replacing the upper electrode 2a and the lower electrode 2b with a sensor or the like suitable for the detection target, it is possible to set other physical quantities and chemical activity as the detection target.

Further, although the detection output devices 1 and 1A are configured to include four LEDs 5a, 5b, 5c, and 5d as output means, two, three, or five or more LEDs may be provided, and light emission may be provided. It may be composed of an RGB type light emitting element whose color can be changed, and may be configured to change the hue when emitting light according to the electric field strength. Further, the configuration is not limited to such a configuration, and for example, a configuration may be configured in which an external device is output via radio waves. Further, in the detection output device 1B, the upper electrode 2Ba and the lower electrode 2Bb are formed in a substantially circular shape, but the shape is not limited to this, and the through hole provided in the upper electrode 2Ba is not limited to the substantially central portion of the upper electrode 2Ba. Moreover, it is not limited to a substantially circular shape.

Further, a plurality of detection and output devices 1, 1A may be arranged in an array, and detection may be performed by the plurality of detection and output devices 1, 1A at the same time. By observing the brightness of the LED at a plurality of locations at the same time, the flow velocity density of the electric field or the ion flow at each location where the detection output devices 1 and 1A are arranged can be discriminated at a glance, and the detection of the present invention can be performed. By using the output devices 1 and 1A, the number of display devices that can be arranged per unit area increases as compared with the conventional case, so that discrimination can be performed at narrower intervals.

As described above, the detection output device according to the present invention is, for example, an electric potential treatment device that applies a high voltage to an insulated human body and performs treatment by utilizing the biostimulation action of an electric field formed around the human body. Devices that generate electric fields, devices that detect electric fields around electrical product parts and units, devices that detect electrostatic charges on production lines, devices that detect electric fields in medical equipment, school education, etc. It is useful as a device for recognizing that an electric field is formed in a device for detecting an electric field generated by teaching materials and equipment for learning electricity in a museum or the like. In addition, in electrostatic coating that utilizes the property of moving charged liquids and powders by electrostatic force, the distribution of applied static electricity can be visually recognized to understand how the electrostatic field affects the liquids and powders. Is useful because it enables.

1 Detection output device 2, 2B Electrodes 2a, 2Ba Upper electrodes 2b, 2Bb Lower electrodes 3 Virtual grounded current detector 4 Integrator (integrator circuit)
5,5a, 5b, 5c, 5d, 5B LED (output means / light emitting element)
6 Battery (power supply)
7 Short-circuit switch 8 Optical waveguide diffuser 10 Circuit board 31 Operational amplifier 32,33,34 Resistance 35 Capacitor 41 Operational amplifier 42 Capacitor 43,44,45 Resistance 46 MPU
100a, 100b Electric field electrode 200 Ion source 201 Ion flow 300 Static elimination pad (refresh device)
I ion

Claims (11)

It is a flat plate-shaped detection output device that detects an invisible detection target in space and outputs the detection result.
Two flat plate-shaped electrodes arranged substantially in parallel,
A virtual grounding type current detector that is arranged between the two electrodes and detects the current generated when the detection target is detected by the two electrodes.
An output means that is arranged between the two electrodes and outputs according to the current, and
A power source, which is arranged between the two electrodes and supplies power to the light emitting device drive circuit and the output means, is provided.
The virtual grounded current detector includes an integrator circuit that integrates the current generated between the two electrodes over time.
A detection and output device characterized by this. The integrator circuit is an analog integrator circuit composed of an operational amplifier, a resistor, and a capacitor.
The detection output device according to claim 1. The virtual grounded current detector includes a bipolar amplifier and a bias circuit that respond to both positive and negative polarities of the current.
The detection output device according to any one of claims 1 or 2. The detection target is an electric field.
The two electrodes detect the strength of the electric field.
The detection output device according to any one of claims 1 to 3 , wherein the detection output device is characterized. The detection target is an ion,
The two electrodes detect the flow velocity density of the adhering ion stream.
The detection output device according to any one of claims 1 to 3 , wherein the detection output device is characterized. The two electrodes are covered with an insulating film and detect the flow velocity density of the ion flow adhering to the insulating film.
The detection output device according to claim 5. When the ions adhere to the two electrodes more than a predetermined amount, a refresh device for removing the ions is provided.
The detection output device according to any one of claims 5 or 6, wherein the detection output device is characterized. The output means includes a plurality of light emitting elements, and different numbers of the light emitting elements emit light according to the detection target.
The detection output device according to any one of claims 1 to 7 , wherein the detection output device is characterized. The output means emits light in different hues corresponding to the detection target.
The detection output device according to any one of claims 1 to 7 , wherein the detection output device is characterized. The output means is a light emitting element.
The light emitting element is arranged between the two electrodes and emits light in a direction perpendicular to the surfaces of the two electrodes.
The detection output device according to any one of claims 1 to 7, wherein the detection output device is characterized. It is made of an insulator and has a grip portion that projects outward from the two electrodes.
The detection output device according to any one of claims 1 to 10.

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