JP2018115882A - Detection output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately measure and output the strength and direction of a flow field density of a DC electric field or an ion flow, and to make it easy for a user to grasp the strength and direction. Provided is a detection output device which is excellent in invasiveness and spatial resolution. A detection output device (1) for displaying the intensity and direction of a detection target includes an upper electrode (2a) and a lower electrode (2b) which are substantially rectangular plate electrodes, and electric charges induced in the upper electrode (2a) and the lower electrode (2b). A virtual ground type current detector 3 for detecting a DC current generated by, an integrator 4 for time-integrating the current value of the detected DC current, and four LEDs 5 in which the number of emitted light changes according to the intensity of the detection target, A virtual ground type current detector 3, an integrator 4, and a battery 6 for driving the LED 5 are provided. [Selection diagram] Fig. 1

Description

  The present invention is simple and quick to measure and detect physical quantities such as invisible electric field strength and direction, ion flow velocity density and direction, and to output the detection result. The present invention relates to a detection output device that is excellent in accuracy and non-invasiveness and can easily grasp 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 have been widely used. In addition, positively or negatively charged ions are floating in the atmosphere, and a strong electric field may be generated by natural phenomena such as static electricity or lightning. However, invisible physical quantities and chemical activities such as electric fields and ions are not easy to quickly and accurately grasp the target electric fields and ions, even if they are experts or experts. It is difficult for a user of technology or equipment who has no specialized knowledge about electric fields and ions to understand and imagine the target electric field and ions. For example, as an example of using an electric field, there is an electric potential treatment apparatus that applies a high voltage to an insulated human body and performs treatment using a biostimulation action by an electric field formed around the human body. When using such a device, it is difficult for the patient to recognize that an electric field is created around him. In addition, DC electric fields are generated during the use of DC power transmission and dust collectors, used in electrostatic coating that uses the property of moving charged liquids and powders by electrostatic force, and friction of clothes, etc. However, it is difficult to visually recognize this phenomenon. Furthermore, examples of using ions include a static eliminator that ionizes air molecules to neutralize static electricity, a deodorizer, and a health device, but it is difficult to recognize ions released into the space.

  In this way, 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 order to suppress invasiveness, this electric field measurement device connects the probe tip made of an electro-optic crystal to a light detection system with an optical fiber cable, and inserts the probe tip into an electric field to detect and measure electric fields. 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 a reference point is measured and used as a reference potential, and the difference (voltage) from a reference potential is measured for one point in the vicinity of an arbitrary measurement object and the value divided by the distance between the two points is the electric field. A voltage detector is known that detects and notifies the formed electric field (see, for example, Patent Document 2). This voltage detector discriminates 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 high invasiveness is manifested. For this reason, the inventor of the present application has proposed an electric field detection output device including an output unit using a plurality of LEDs or the like between flat electrodes (see, for example, Patent Document 3). In this electric field detection output device, when electric charges are induced in electrodes due to an electric field and a current flows between the electrodes, the current value is detected by a virtual ground type current detector, and the number of LEDs to be lit is determined according to the current value. By changing, the strength of the electric field is displayed.

  Other examples of recognizing a DC electric field include a surface potential measurement method for measuring the surface potential of a measured object such as a conductor or an insulator, and examples of recognizing ions in the air, such as a flow path through which a gas flows. An atmospheric ion concentration measuring device provided with a device is known (for example, see 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.

JP 2012-053017 A Japanese Patent No. 4562587 WO2015 / 111656 gazette Japanese Patent Application Laid-Open No. 07-104019 JP 2010-071652 A

  By the way, although the electric field measuring apparatus described in Patent Document 1 is reduced in invasiveness, the configuration is complicated, and the apparatus is large, so that it is difficult to carry and does not have simplicity. . In addition, the voltage detector described in Patent Document 2 is for determining the presence or absence of an electric field, and cannot measure the electric field with high accuracy to grasp the strength. Furthermore, 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, an accurate measurement of the electric field strength can be obtained without a configuration for calculating a time integral value of the calculated current value. It became clear that it was not possible. 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 do not have simplicity because the apparatus is enlarged.

  Therefore, in the present invention, when the electric field, in particular, the electric field is a DC electric field, the flow velocity density and direction of the ion flow are simply and accurately measured and output, and the user can easily grasp it. An object of the present invention is to provide a detection output device that is excellent in simplicity, quick reportability, accuracy, and noninvasiveness and excellent in spatial resolution.

  In order to solve the above problems, the invention described in claim 1 is a flat detection output device that detects an invisible detection target in a space and outputs the detection result, and is arranged substantially in parallel. Two virtual flat plate-shaped electrodes, a virtual ground type current detector disposed between the two electrodes and detecting a current generated when the detection target is detected by the two electrodes, and the two An output unit disposed between the electrodes and configured to output in accordance with the current; and a power source disposed between the two electrodes and configured to supply power to the light emitting device driving circuit and the output unit. The virtual ground current detector includes an integration circuit that performs time integration of current generated between the two electrodes.

  In the present invention, when a charge is induced in the electrode by the electric field, a current flows between the two electrodes, so that the virtual ground current detector detects this current. The output means outputs when the virtual ground current detector detects the electrode current and determines that the threshold value has reached a certain threshold value. The virtual ground current detector includes an integration circuit that performs time integration of current generated between two electrodes.

  According to a second aspect of the present invention, in the detection output device according to the first aspect, the integration circuit is an analog integration circuit including an operational amplifier, a resistor, and a capacitor.

  The invention according to claim 3 is a flat detection output device that detects an invisible detection target in the space and outputs the detection result, and includes two flat electrodes arranged substantially in parallel. A virtual ground current detector that is disposed between the two electrodes and detects a current generated when the detection target is detected by the two electrodes; and between the two electrodes, Output means for performing output in accordance with the current; and a power supply disposed between the two electrodes and supplying power to the virtual ground current detector and the output means, the virtual ground current The detector can detect a change in the detection target caused by a predetermined operation for detecting the detection target.

  According to a fourth aspect of the present invention, in the detection output device according to any one of the first to third aspects, the virtual ground current detector includes a bipolar amplifier and a bias that respond to positive and negative polarities of the current. A circuit is provided.

  The invention according to claim 5 is the detection output device according to any one of claims 1 to 4, wherein the detection target is an electric field, and the two electrodes detect the intensity of the electric field. It is characterized by that.

  According to a sixth aspect of the present invention, in the detection output device according to any one of the first to fourth aspects, the detection target is ions, and the two electrodes are flow velocity densities of the ion flow to be attached. It is characterized by detecting.

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

  According to an eighth aspect of the present invention, in the detection output device according to any one of the sixth or seventh aspect, a refresh device that removes the ions when the ions adhere to the two electrodes more than a predetermined amount. It is provided, It is characterized by the above-mentioned.

  According to a ninth aspect of the present invention, in the detection output device according to any one of the first to eighth aspects, the output means includes a plurality of light emitting elements, and the number of the different numbers corresponding to the detection target. The light emitting element emits light.

  A tenth aspect of the present invention is the detection output device according to any one of the first to eighth aspects, wherein the output means emits light in different hues corresponding to the detection target. .

  According to an eleventh aspect of the present invention, in the detection output device according to any one of the first to eighth aspects, the output means is a light emitting element, and the light emitting element is disposed between the two electrodes. And emitting light in a direction perpendicular to the surfaces of the two electrodes.

  A twelfth aspect of the present invention is the detection output device according to any one of the first to eleventh aspects, further comprising a grip portion formed of an insulator and projecting outward from the two electrodes. It is characterized by that.

  According to the first aspect of the present invention, since the integration circuit that performs time integration of the current generated between the two electrodes is provided, for example, the electric field strength can be accurately measured with sensitivity independent of the frequency of the electric field. The data can be output and the user can easily grasp it. In addition, the virtual grounding current detector equipped with this integration circuit is arranged between two flat electrodes, so it has excellent simplicity, quick reporting, accuracy, noninvasiveness, and excellent spatial resolution. It is possible to provide a detection output device.

  According to the second aspect of the present invention, since the analog integration circuit including the operational amplifier, the resistor, and the capacitor is provided, the DC electric field can be detected and output.

  According to the third aspect of the present invention, since the virtual ground current detector is configured to be able to detect a change in the detection target caused by a predetermined operation for detecting the detection target, for example, the detection target is an electrostatic field. In this case, since the electric field to be detected does not flow in the space, the intensity can be detected and output by changing the predetermined operation from the zero electric field position. In addition, when the detection target is an ion, the detection target ion may flow in the space or may float, so that when the ion is flowing in the space, a predetermined operation is performed in the space. It is possible to detect and output the intensity, and when the ions are floating in the space, the intensity is detected by changing the position of the predetermined operation. It becomes possible to output. Furthermore, this virtual grounding current detector is arranged between two flat electrodes, so that a detection output device with excellent simplicity, quick reporting, accuracy, non-invasiveness and excellent spatial resolution can be obtained. It becomes possible to provide.

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

  According to the fifth aspect of the present invention, 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 thereby. It becomes possible to apply to an output device.

  According to the invention described in claim 6, the detection target is ions, and the two electrodes detect the flow velocity density of the ion flow adhering to the electrodes. Therefore, the detection output device of the present invention is applied to the ion detection output device. It becomes possible to do.

  According to the seventh aspect of the present invention, the two electrodes are covered with the 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 is possible to provide a non-invasive detection output device.

  According to the eighth aspect of the present invention, it is possible to reset the charge-up due to the ions by providing the refresh device for removing the ions when the ions adhere to the two or one electrode more than a predetermined amount. Become. As a result, when the ion flux is large, the accumulated amount of ions becomes excessive, and it is possible to prevent the influence of the subsequent ion flow or saturation of the detection circuit, and to stably measure the flow velocity density of the ion flow. it can.

  According to the ninth aspect of the present invention, the output means includes a plurality of light emitting elements, and a different number of light emitting elements emit light corresponding to the detection target, so that a detection output device with excellent quickness and accuracy is realized. It becomes possible.

  According to the tenth aspect of the present invention, since the output means emits light in different hues corresponding to the detection target, it is possible to realize a detection output device with excellent quickness and accuracy.

  According to the eleventh aspect of the present invention, the output means is composed of a light emitting element, and the light emitting element is disposed between the two electrodes so as to emit light in a direction perpendicular to the surface of the electrode. 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 twelfth aspect of the present invention, since the grip portion that is formed of an insulator and protrudes outward from the two electrodes is provided, the operator's hand or the like directly in the space for detecting the detection target Therefore, it is possible to realize an electric field detection output device that is excellent in noninvasiveness.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline of the detection output device 1 which concerns on Embodiment 1 of this invention, the perspective view (a) which shows the external appearance of the detection output device 1, and the block block diagram (b) which shows the function of the detection output device 1 It is. FIG. 2 is a circuit diagram showing an example in which a bipolar amplifier and a bias circuit are provided as the virtual ground current detector 3 of FIG. 1. 3 is a circuit diagram illustrating an example in which a circuit 3A is provided as the virtual ground current detector 3 and the integrating unit 4 of FIG. It is a circuit diagram which shows the example provided with 4 A of integration parts as the integration part 4 of FIG. It is a circuit diagram which shows the example provided with the integration part 4B as the integration part 4 of FIG. It is the schematic which shows the state which inserted the detection output apparatus 1 of FIG. 1 in the orthogonal | vertical direction with respect to the electric field direction. It is the schematic which shows the example which inserted 1 A of detection output apparatuses which concern on Embodiment 2 of this invention in the ion current. It is a block block diagram which shows the function of 1 A of detection output apparatuses of FIG. FIG. 8 is a schematic diagram illustrating an example in which ions attached to the detection output device 1A of FIG. FIG. 8 is a schematic diagram showing an example of detecting ions using the detection output device 1A of FIG. 7, a schematic diagram (a) showing an example of detecting flowing ions I using the detection output device 1A, and the detection output device. It is the schematic (b) which shows the example which detects the 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, and is a perspective view (a) which shows the external appearance of the detection output device 1B, and sectional drawing (b) which shows the internal structure of the detection output device 1B It is.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
1 to 6 show Embodiment 1 of the present invention. FIG. 1 is a perspective view (a) showing an appearance of a detection output device 1 and a block configuration diagram showing functions of the detection output device 1 (FIG. 1). b). FIG. 2 is a circuit diagram showing an example in which a bipolar amplifier and a bias circuit are provided as the virtual ground current detector 3 of FIG. The detection output device 1 according to Embodiment 1 of the present invention emits a numerical value, intensity, direction, or flow of a detection target existing in this space by being inserted into a predetermined space. For example, a device that displays the intensity of a direct-current electric field as a detection target is displayed by light emission of a light-emitting element, and the device is scanned in the space to grasp the distribution of the electric field. It is a device for grasping the direction of the electric field by rotating and scanning inside. Here, the DC electric field is not limited to the case where it always shows a constant current value, but the polarity of the electric current, as in the case where the electric field strength is measured in an AC electric field having a small frequency within a quarter cycle. This concept includes cases where there is no change and there is no change in the current value, and cases where the current gradually changes from zero to a constant value, such as a 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 8 is attached. The functional block configuration of the detection output device 1 includes, for example, as shown in FIG. 1B, an electrode 2, a virtual ground current detector 3, an integration unit (integration circuit) 4, an LED 5, and a battery. (Power supply) 6 and a short-circuit switch 7, and a virtual ground current detector 3, an integration 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. 1 (a), the electrode 2 is two substantially rectangular flat plate electrodes that are arranged substantially parallel to each other, and includes an upper electrode 2a and a lower electrode 2b. It is formed by setting the electrode interval d and the electrode area s. The size (electrode interval d, electrode area s) and shape of the upper electrode 2a and the lower electrode 2b are set according to the constraints of the space to be detected, etc., and virtual ground type current detection is performed according to the size and shape. The device 3, the integrating unit 4, the LED 5, the battery (power source) 6, and the short-circuit switch 7 are selected and determined so as to be accommodated. Specifically, the electrode interval d is set to, for example, several mm or less, and the electrode area s is set to about 50 cm ² or less, for example, to be about the size of a business card.

  As shown in FIG. 1B, the virtual ground current detector 3 detects a current generated when charges are induced in the upper electrode 2a and the lower electrode 2b, and the upper electrode 2a and the lower electrode 2b. And a detector connected to the signal line for detecting current. For example, as shown in FIG. 2, the virtual ground current detector 3 includes an operational amplifier (operational amplifier) 31 having virtual ground characteristics and resistors 32, 33, and 34. The upper electrode 2a is connected to the input terminal of the input (−), the lower electrode 2b is connected to the input terminal of the non-inverting input (+), and the integrating unit 4 is connected to the output terminal of the operational amplifier 31, respectively. It is operated with a negative power supply voltage -Vcc. The operational amplifier 31 has virtual ground characteristics, and the voltages at the input terminals of the non-inverting input (+) and the inverting input (−) are always equal, that is, 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 ground type current detector 3, the upper electrode No potential difference is generated between 2a and the lower electrode 2b. The operational amplifier 31 is composed of a bipolar amplifier that determines the polarity of the electric field. The resistors 33 and 34 constitute a bias circuit.

  Since the input terminal of the virtual ground current detector 3 is connected to the upper electrode 2a and the lower electrode 2b by conducting wires, when the detection output device 1 is left in the electric field, the upper electrode 2a and the lower electrode 2b are connected to each other. In this case, charges having different polarities are induced, and currents generated at that time are detected. At this time, due to the virtual ground characteristic of the virtual ground 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 considered.

The integration unit 4 is a device for time-integrating the current value detected by the virtual ground type current detector 3, and this integration unit 4 converts the current value into the following equation when the electric field to be measured is DC. Calculated by Here, I is a current value, t is a time, ε is a dielectric constant, s is an electrode area, and E (t) is an 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, examples of other circuit configurations in the virtual ground 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 ground current detector 3 and the integrating unit 4 of FIG. The circuit 3A includes an operational amplifier 31 having virtual ground characteristics, resistors 33 and 34, and a capacitor 35. The upper electrode 2a is provided at the input terminal of the inverting input (−) of the operational amplifier 31, and the non-inverting input (+). The lower electrode 2b is connected to the input terminal, and the LED 5 is connected to the output terminal of the operational amplifier 31, and is 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 constitute an integrator. Even with such a circuit configuration, the same effect as the virtual ground 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 integrating unit 4 in FIG. The circuit 4A includes an operational amplifier 41, a capacitor 42, and resistors 43, 44, and 45, and constitutes an analog integration circuit. The inverting input (−) input terminal of the operational amplifier 41 is connected to the virtual ground current detector 3 via the resistor 43, and the non-inverting input (+) input terminal is connected to the positive power supply voltage Vcc via the resistors 44 and 45. LED 5 is connected to the output terminal of the operational amplifier 41 and is operated by the positive power supply voltage Vcc and the negative power supply voltage -Vcc. Even with such a circuit configuration, an effect similar to that of the integrating unit 4 can be obtained.

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

  The LED 5 is a device that performs output (for example, light emission) according to the current value detected by the virtual ground current detector 3 and calculated by the integration unit 4, and includes, for example, LEDs 5a, 5b, 5c, and 5d. ing. The LEDs 5a, 5b, 5c, and 5d emit light when the current value detected by the virtual ground current detector 3 and calculated by the integrating unit 4 is from zero to a predetermined value, for example. If the current value detected by the virtual ground 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 according to the magnitude of the current value, that is, the electric field strength. , 5c emit light, and LEDs 5a, 5b, 5c, and 5d emit light, and the number of LEDs that emit light changes.

  As shown in FIG. 1 (b), the battery 6 supplies power to the virtual ground current detector 3, the integrating unit 4, and the LED 5, and is formed 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 that can be used to reset an offset of charge accumulation caused by noise or the like by closing, and to detect at a zero electric field level by opening. When the detection output device 1 is left in the DC electric field in a state where the detection at the zero electric field level is started by opening the short-circuit switch 7, the accumulated charge also increases according to the gradually increasing DC electric field value. Current is also detected, and its integrated value indicates the electric field value. When the detection output device 1 is moved to a place where there is no electric field, the accumulated charge is also canceled. At this time, there should be no charge accumulation or charge bias in the upper electrode 2a and the lower electrode 2b, but charge accumulation or charge bias may occur due to noise or the like, which affects the next measurement. Sometimes. In order to reset such charge accumulation and charge bias, a short-circuit switch 7 is provided.

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

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

  FIG. 6 is a schematic diagram 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 interval d is set to be sufficiently smaller than the distance L. 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 to be sufficiently smaller than the area S. Furthermore, an 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, as shown in FIG. 6, the user inserts the detection output device 1 in the electric field formed by the electric field electrodes 100a and 100b in a direction perpendicular to the electric field direction. And leave it alone. At this time, electric charges are induced in the upper electrode 2a and the lower electrode 2b, and a current generated when the induced electric charge is changed is detected by the virtual ground current detector 3, and is integrated by time by the integrating unit 4 to obtain a current value. Is calculated. Based on the current value detected by the virtual ground type current detector 3 and calculated by the integration unit 4, only the LED 5a emits light, the LEDs 5a and 5b emit light, the LEDs 5a, 5b and 5c emit light, or the LEDs 5a, 5b and 5c. , 5d emit light in stages, such as light emission, the user can grasp the electric field strength from the number of LEDs emitting light at this time.

  If the user does not know the direction of the electric field, if the user inserts the detection output device 1 into the electric field formed by the electric field electrodes 100a and 100b in an oblique direction with respect to the electric field direction, A charge is induced in the electrode 2a and the lower electrode 2b, and a current generated when the induced charge is changed is detected by the virtual ground current detector 3. The electric field detection output device 1 has the orientation shown in FIG. As compared with the case where the charge is reduced, a reverse current is generated as the electric charge is reduced. Therefore, the current value is calculated by integrating the current value with the integration unit 4 over time. For example, when the electric field detection output device 1 is inserted in the direction shown in FIG. 6 and the LEDs 5a, 5b, 5c, and 5d emit 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, 5b emit light, or the LEDs 5a, 5b, 5c emit light. Therefore, the user can grasp that the electric field strength is weak according to the number of LEDs emitting light at this time. In addition, by moving the electric field detection output device 1 on the spot, the number of LEDs 5a, 5b, 5c, 5d that emit light 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 leaves it stationary, the stationary direction of the upper electrode 2a and the lower electrode 2b. Since the electric field direction coincides with the electric field direction, the electric charge is not induced. Therefore, the electric charge does not change, and the electric current value is calculated by time integration of the electric current value by the integrating unit 4, but when the electric current value is zero, the electric current value is calculated. Even if the value is integrated over time, it is 0, so no current is detected. Therefore, the LEDs 5a, 5b, 5c, and 5d remain in a 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 by the non-light emitting state of the LEDs 5a, 5b, 5c, and 5d. Accordingly, it is possible to use as a visualization device that displays and records a state of light emission by detecting an electric field superimposed on an optical image as a diagram 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 thereby becomes 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. I can grasp it. Therefore, by reducing the size of the entire electric field detection output device 1 while maintaining the aspect ratio between the length of the electrode side and the distance between the two electrodes, non-invasiveness by the device in the electric field is maintained. As a result, since the resolution is improved as compared with the conventional electric field detection output device, it is possible to realize an electric field detection output device excellent in simplicity, quick reporting, accuracy, and noninvasiveness.

  In addition, since the integration unit 4 is provided, the current value detected in accordance with the increase or decrease of the charge is time-integrated to detect the electric field, so that even if the detection target is a DC electric field, the detection output device 1 is provided. It becomes possible to use. Furthermore, since the virtual ground current detector 3 includes the operational amplifier 31 that responds to both positive and negative polarities, the polarity of the electric field can be determined by rotating the detection output device 1.

  Further, since the grip portion 8 is provided, the electric field is prevented from being disturbed, so that it is possible to realize a non-invasive electric field detection output device.

(Embodiment 2)
FIG. 7 is a schematic diagram showing an example in which the detection output device 1A according to Embodiment 2 of the present invention is inserted into the ion flow 201. FIG. 8 is a block diagram showing the function of the detection output device 1A of FIG. FIG. 9 is a schematic diagram showing an example in which ions attached to the detection output device 1A of FIG. As shown in FIG. 7, this detection output device 1A is a device for detecting the flow velocity density of ions I by being inserted into an ion flow 201 generated by emitting ions I from an ion source 200 in the direction of an arrow. is there. As shown in FIG. 8, the detection output device 1A is not provided with the integration unit 4 of the detection output device 1 according to the first embodiment, and the electrode 2 is covered with an insulating film. 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 I from corroding due to the direct attachment of 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 neutralizing the ions I attached to the detection output device 1A. The electrode 2a and the lower electrode 2b are used in contact with each other. If the ion flux of the ions I attached to the upper electrode 2a and the lower electrode 2b of the detection output device 1A is large, the charge removal pad 300 causes an excessive amount of ions I to be accumulated and affects the subsequent ion flow. This is provided to prevent the detection circuit from becoming saturated. About another structure, it is the same as that of the electric field detection output device 1 which concerns on Embodiment 1. FIG.

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

  FIG. 10 is a schematic diagram showing an example of detecting ions using the detection output device 1A of FIG. 7, and a schematic diagram (a) showing an example of detecting flowing ions I using the detection output device 1A. FIG. 4B is a schematic diagram (b) showing an example of detecting stationary ions I using the detection output device 1A. Here, in the ion flow 201 shown in FIG. 7, there are a case where the ion I flows in a predetermined direction and a case where the ion I floats in a certain space.

  As shown in FIG. 10A, when the ions I are flowing in a predetermined direction as indicated by an arrow Y, the detection output device 1A is left in the ion flow 201 (predetermined operation), whereby the ions I 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 ground current detector 3. Based on the current value detected by the virtual ground current detector 3, some or all of the LEDs 5a, 5b, 5c, 5d emit light. Thereby, the user can grasp | ascertain the flow velocity density of an ion flow with the number of LED currently light-emitted at this time.

  Further, as shown in FIG. 10B, when the ions I are floating, the ions I are moved to the electrodes 2 by moving the detection output device 1A in the direction of the arrow Z in the ion flow 201 (predetermined operation). 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 ground current detector 3. Based on the current value detected by the virtual ground current detector 3, some or all of the LEDs 5a, 5b, 5c, 5d emit light. Thereby, the user can grasp | ascertain the flow velocity density of an ion flow with the number of LED currently light-emitted at this time.

  As described above, according to the electric field detection output device 1A, the electrode 2 is covered with the insulating film, and is fixed in the ion flow 201 or moved in the direction of the arrow Z in the ion flow 201. By performing the operation, it becomes possible to detect ions. Further, by providing the static elimination pad 300, it is possible to reset the charge-up due to ions. As a result, when the ion flux is large, the accumulated amount of ions becomes excessive, and it is possible to prevent the influence of the subsequent ion flow or saturation of the detection circuit, and to stably measure the flow velocity density of the ion flow. it can.

(Embodiment 3)
FIG. 11: 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 external appearance of the detection output device 1B, and the cross section which shows the internal structure of the detection output device 1B FIG. Similar to the detection output device 1 according to Embodiment 1, this detection output device 1B is inserted into a predetermined space, whereby the intensity of a detection target (for example, a DC electric field) existing in this space is detected. Is a device for displaying the light emission color or light intensity of a light emitting element, scanning the device in the space to grasp the distribution of the electric field, and rotating the space in the space to grasp the direction of the electric field. . 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. LED 5B is provided instead of 5b, 5c, 5d, the virtual ground current detector 3, the integrating unit 4, the LED 5B, the battery 6, and the circuit unit 10 constituting the short-circuit switch 7, and the optical waveguide diffusion unit 8 is different from the detection output device 1 according to the first embodiment in that it includes 8. In addition, illustration of the virtual ground type current detector 3, the integrating unit 4, the battery 6, and the short-circuit switch 7 is omitted.

  The upper electrode 2Ba and the lower electrode 2Bb are two flat plate electrodes that face each other and are substantially parallel to each other, and are formed in a substantially circular shape, for example. The electrode spacing and the electrode area of the upper electrode 2Ba and the lower electrode 2Bb are set according to restrictions on the space to be detected, as with the upper electrode 2a and the lower electrode 2b. In addition, a substantially circular through hole is provided at a substantially central portion of the upper electrode 2Ba as shown in FIG.

  The LED 5 </ b> B is a light emitting element that emits light according to the current value detected by the virtual ground current detector 3. For example, the LED 5 </ b> B changes the emission color according to the current value detected by the virtual ground current detector 3. It is an RGB type light emitting element or a monochromatic light emitting element that changes the light emission intensity in accordance with the current value. This LED 5B is embedded and disposed in the circuit unit 10, and the emitted light passes through the optical waveguide diffusion unit 8 in the direction of 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 that it may emit light.

  The optical waveguide diffusing unit 8 is a device that diffuses the light emitted from the LED 5B in the direction of the upper surface side of the upper electrode 2Ba, and includes, for example, a light guide plate. The optical waveguide diffusing section 8 is disposed between the upper electrode 2Ba and the lower electrode 2Bb so as to be fitted into the through hole of the upper electrode 2Ba.

  The circuit unit 10 is a flat substrate constituting the virtual ground current detector 3, the integrating unit 4, the LED 5B, the battery 6, and the shorting switch 7, and is disposed between the upper electrode 2Ba and the lower electrode 2Bb. It is formed in a ring shape.

  The method of using this 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 disposed between the upper electrode 2Ba and the lower electrode 2Bb, and is provided so as to emit light in the direction of the through hole. Since it is possible to recognize that light is 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 diffusing portion 8 is disposed between the upper electrode 2Ba and the lower electrode 2Bb so as to be fitted into the through hole of the upper electrode 2Ba, the detection output is obtained by diffusing the light of the LED 5B. The visibility of the device 1B can be further improved. In this embodiment, the upper electrode 2Ba is provided with a through hole. However, the lower electrode 2Bb is provided with a through hole to expose the optical waveguide diffusion portion 8, and the light emitted from the LED 5B is emitted from the lower surface side of the lower electrode 2Bb. Further, through holes may be provided in both the upper electrode 2Ba and the lower electrode 2Bb to expose both upper and lower end surfaces of the optical waveguide diffusion portion 8, and light emitted from the LED 5B may be emitted from the upper surface of the upper electrode 2Ba. The diffusion may be performed in both directions on 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 embodiment, and even if there is a design change or the like without departing 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. However, the detection target is not limited to an electric field or ions, but an electric field, a magnetic field, invisible light, Other physical quantities and chemical activities such as numerical values or intensities and directions of sound fields, radiation, environmental substances, etc. can be detected. By replacing the upper electrode 2a and the lower electrode 2b with a sensor or the like suitable for the detection target, other physical quantities and chemical activities can be set as the detection target.

  The detection output devices 1 and 1A are configured to include four LEDs 5a, 5b, 5c, and 5d as output means. However, two, three, or five or more LEDs may be provided, and light emission It may be configured by an RGB type light emitting element capable of changing color, and may be configured to change the hue when light is emitted according to the electric field intensity. Furthermore, the configuration is not limited to such a configuration. For example, a configuration in which an external device outputs the signal via radio waves may be used. Further, in the detection output device 1B, the upper electrode 2Ba and the lower electrode 2Bb are formed in a substantially circular shape. However, the shape is not limited to this shape, and the through-hole provided in the upper electrode 2Ba is not limited to the substantially central portion of the upper electrode 2Ba. Furthermore, it is not limited to a substantially circular shape.

  Further, a plurality of detection output devices 1 and 1A may be arranged in an array, and detection by the plurality of detection output devices 1 and 1A may be performed simultaneously. By simultaneously observing the brightness of the LEDs at a plurality of locations, the electric field or ion flow velocity density at each location where the detection output devices 1 and 1A are disposed can be identified 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 is increased as compared with the conventional case, so that discrimination at narrower intervals becomes possible.

  As described above, the detection output device according to the present invention is, for example, a potential treatment device that applies a high voltage to an insulated human body and performs treatment using a biostimulation effect by an electric field formed around the human body. Equipment for generating electric fields, equipment for detecting electric fields around parts and units of electrical products, equipment for detecting electrostatic charge in production lines, equipment for detecting electric fields in medical equipment, school education, 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 facilities for learning electricity in a museum or the like. In addition, in electrostatic coating using the property of moving charged liquids and powders by electrostatic force, the distribution of applied static electricity can be visually recognized, so that the state of the effect of electrostatic fields on liquids and powders can be understood. This is useful because it becomes possible.

DESCRIPTION OF SYMBOLS 1 Detection output device 2, 2B Electrode 2a, 2Ba Upper electrode 2b, 2Bb Lower electrode 3 Virtual ground type current detector 4 Integration part (integration circuit)
5, 5a, 5b, 5c, 5d, 5B LED (output means / light emitting element)
6 Battery (Power)
7 Short-circuit switch 8 Optical waveguide diffusion part 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 Field electrode 200 Ion source 201 Ion flow 300 Static elimination pad (refresh device)
I ion

Claims (12)

A plate-like detection output device that detects an invisible detection target in space and outputs the detection result,
Two flat electrodes arranged substantially in parallel;
A virtual ground current detector that is disposed between the two electrodes and detects a current generated when the detection target is detected by the two electrodes;
An output means disposed between the two electrodes and configured to output in accordance with the current;
A power source disposed between the two electrodes and supplying power to the light emitting device drive circuit and the output means,
The virtual ground current detector includes an integration circuit that performs time integration of a current generated between the two electrodes.
A detection output device characterized by that. The integration circuit is an analog integration circuit composed of an operational amplifier, a resistor, and a capacitor.
The detection output device according to claim 1. A plate-like detection output device that detects an invisible detection target in space and outputs the detection result,
Two flat electrodes arranged substantially in parallel;
A virtual ground current detector that is disposed between the two electrodes and detects a current generated when the detection target is detected by the two electrodes;
An output means disposed between the two electrodes and configured to output in accordance with the current;
A power source disposed between the two electrodes and supplying power to the virtual ground current detector and the output means,
The virtual ground current detector is capable of detecting a change in the detection target caused by a predetermined operation for detecting the detection target.
A detection output device characterized by that. The virtual ground 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 claim 1, wherein the detection output device is a detection output device. 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 4, wherein The detection target is ions,
The two electrodes detect the flow velocity density of the ion stream attached;
The detection output device according to any one of claims 1 to 4, wherein The two electrodes are covered with an insulating film and detect a flow velocity density of the ion flow attached to the insulating film.
The detection output device according to claim 6. When the ions adhere to the two electrodes more than a predetermined amount, a refresh device is provided to remove the ions.
The detection output device according to claim 6, wherein the detection output device is a detection output device. The output means includes a plurality of light emitting elements, and a different number of the light emitting elements emit light corresponding to the detection target.
The detection output device according to claim 1, wherein the detection output device is a detection output device. The output means emits light in different hues corresponding to the detection target.
The detection output device according to claim 1, wherein the detection output device is a detection output device. The output means is a light emitting element;
The light emitting element is disposed between the two electrodes and emits light in a direction perpendicular to the surface of the two electrodes.
The detection output device according to claim 1, wherein the detection output device is a detection output device. It is formed of an insulator and includes a gripping part that protrudes outward from the two electrodes.
The detection output device according to claim 1, wherein the detection output device is a detection output device.

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