CN219657795U - Discharge tester - Google Patents

Abstract

The utility model relates to the technical field of discharge detection, in particular to a discharge tester. The automatic discharge detection device comprises a host and an acquisition probe used for acquiring discharge signals, wherein a detection circuit, an AD (analog-to-digital) converter, a calculation controller and a display screen are arranged in the host, the detection circuit is connected with the acquisition probe and used for acquiring detected current signals and transmitting the acquired current signals to the AD converter, the AD converter is used for converting the acquired current signals into digital values and transmitting the digital values to the calculation controller, and the calculation controller is used for calculating actually detected current values and transmitting the actually detected current values to the display screen which is used for displaying the detected current actual values. The method aims to solve the problem that in the prior art, whether the static eliminating rod has discharge capability and intensity are estimated by visually judging whether the static eliminating rod emits light and whether the static eliminating rod emits light or not, so that a measuring structure is inaccurate.

Description

Discharge tester

Technical Field

The utility model relates to the technical field of discharge detection, in particular to a discharge tester.

Background

The static eliminating rod is widely applied to the production industries of film making, papermaking, printing and the like and aims to eliminate static on the surface of a product. The static eliminating rod has weak discharging capacity after being used for a period of time, and the discharging capacity of the static eliminating rod needs to be tracked in order to ensure the quality of products.

At present, a test pencil point is generally used to be close to or contacted with a discharge needle of the static eliminating rod, and whether the static eliminating rod has the discharge capability or not is estimated by observing whether the test pencil emits light or not and whether the test pencil emits light or not. Moreover, the existing detection equipment has the following defects:

(1) Because the test pencil only can see whether the light is emitted or not, only whether the static electricity eliminating rod discharges or not can be measured, and accurate data is not available, so that inconvenience is brought to data analysis.

(2) Because the products of each factory are different or because of data, the applicable specification of the static eliminating rod cannot be accurately selected.

(3) The electroscope relies on individual perception to judge on observing light brightness, so actual result deviation is big.

Disclosure of Invention

First, the technical problem to be solved

The utility model mainly aims at solving the problems, and provides a discharge tester which aims at solving the problems that in the prior art, whether the discharge capability of a static eliminating rod exists or not and the strength of the static eliminating rod is estimated by visually judging whether the static eliminating rod emits light or not and whether the static eliminating rod emits light or not, so that the measurement structure is inaccurate.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a discharge tester, which comprises a host and an acquisition probe for acquiring a discharge signal, wherein a detection circuit, an AD (analog-to-digital) converter, a calculation controller and a display screen are arranged in the host, the detection circuit is connected with the acquisition probe and is used for acquiring a detected current signal and transmitting the acquired current signal to the AD converter, the AD converter is used for converting the acquired current signal into a digital quantity and transmitting the digital quantity to the calculation controller, the calculation controller is used for calculating an actually detected current value and transmitting the actually detected current value to the display screen, and the display screen is used for displaying the detected current actual value.

Further, a protection circuit is arranged between the detection circuit and the acquisition probe, the protection circuit comprises two Schottky diodes, the two Schottky diodes are connected in reverse parallel, and a grounding probe is arranged on the circuit of the two Schottky diodes.

Further, a power-on button for opening and closing the host and a power supply for providing electric energy are arranged on the panel of the host, the power supply is connected with the computing controller, and the input end of the power-on button is connected to a circuit connected with the computing controller.

Further, a double-pole double-throw switch switching circuit is further arranged in the host, one end of the double-pole double-throw switch switching circuit is connected with the acquisition probe and the grounding probe, and the other end of the double-pole double-throw switch switching circuit is connected with the two Schottky diodes.

Further, the acquisition probe comprises a needle tip, a coaxial cable and a plug, wherein the coaxial cable is connected with the needle tip and the plug.

Further, an insulating tube is arranged outside the needle point.

Further, the insulating tube is a transparent insulating tube.

Further, the acquisition probe comprises a probe plate, a coaxial cable and a plug, wherein the coaxial cable is connected with the probe plate and the plug.

Further, the acquisition probe also comprises an insulation detection box, and the probe plate is arranged in the insulation detection box.

Further, the insulation detection box is made of transparent materials.

Further, the schottky diode is IN5819.

(III) beneficial effects

Compared with the prior art, the discharge tester provided by the utility model can digitize a measurement result, and clearly and accurately calibrate the intensity of the function of the static elimination rod by measuring the ionic current value after the static elimination rod needle point discharges, and the current value is displayed in a digital form, thereby being beneficial to observation, evaluation and subsequent production adjustment.

Drawings

FIG. 1 is a block diagram of a discharge tester according to the present disclosure.

Fig. 2 is a circuit diagram of a discharge tester according to the present disclosure.

Fig. 3 is a schematic diagram of a host structure of a discharge tester according to the present disclosure.

Fig. 4 is a schematic view of the structure of a needle probe according to the present disclosure.

Fig. 5 is a schematic structural view of a zone probe according to the present disclosure.

Reference numerals shown in the drawings: 1. a host; 2. a needle probe; 3. a zone probe; 201. a needle tip; 202. a coaxial cable; 203. a plug; 204. an insulating tube; 301. a probe plate; 302. an insulating detection box.

Detailed Description

The following detailed description of the present utility model, taken in conjunction with the accompanying drawings, will clearly and fully describe the technical solutions of the embodiments of the present utility model, it being evident that the described embodiments are only some, but not all, embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a frame diagram of a discharge tester according to a preferred embodiment of the utility model is shown. In the embodiment shown in fig. 1, the discharge tester mainly comprises a host computer 1, an acquisition probe (a needle probe 2 and a regional probe 3) and a direct current power supply. The acquisition probe is connected in the jack on the host 1 and is used for acquiring discharge signals; as shown in fig. 2, a detection circuit, an AD analog-to-digital converter, a calculation controller and a display screen are arranged in the host 1, wherein the detection circuit is connected with the acquisition probe and is used for acquiring a detected current signal and transmitting the acquired current signal to the AD analog-to-digital converter, the AD digital-to-analog converter is used for converting the acquired current signal into a digital quantity and transmitting the digital quantity to the calculation controller, the calculation controller is used for calculating an actually detected current value and transmitting the actually detected current value to the display screen, and the display screen is used for displaying the detected current actual value.

In the embodiment, the discharge tester can display real-time reading, digitize the measurement result, and rapidly and clearly judge the performance of the static eliminating rod by measuring the ionic current resin after the static eliminating rod needle point discharges, and the current value is displayed in a digital form, thereby being beneficial to observation, evaluation and subsequent production adjustment and ensuring the product quality; furthermore, in order to read conveniently and accord with daily habits, the instrument design is displayed in decimal data.

As shown in fig. 1 and 2, a protection circuit is arranged between the detection circuit and the acquisition probe, the protection circuit comprises two schottky diodes which are reversely connected in parallel, a grounding probe is arranged on the circuit of the two schottky diodes, and if the measured current is too large (for example, greater than 1A), the current is discharged to the ground through the grounding probe, so that the protection effect on operators and instruments is achieved.

As shown in fig. 2, a power-on button for opening and closing the host 1 and a power supply for providing electric energy are arranged on a panel of the host 1, 4 sections of 1.5V rechargeable batteries can be used for supplying power to the whole machine, the power supply is connected with a computing controller, an input end of the power-on button is connected to a circuit of the power supply connected with the computing controller, and in addition, a zero clearing switch is arranged for clearing the last data or historical data.

The host computer 1 is also internally provided with a double-pole double-throw switch switching circuit, one end of the double-pole double-throw switch switching circuit is connected with the acquisition probe and the grounding probe, the other end of the double-pole double-throw switch switching circuit is connected with two Schottky diodes, forward and reverse currents can be measured, the forward and reverse currents can be easily converted through a switching button on a panel, and the line of the exchange probe is not required to be pulled out again.

It should be noted that, since the direct current has "+ -" polarity, the current can only display the current value from +in-out, but the electrostatic rod discharges with positive and negative charges, when positive charges are detected, the switch is switched on by the double-pole double-throw switch as shown in fig. 2; if negative charge is measured, the double pole double throw switch is turned on with the down switch to display the current value. Therefore, when the measurement is changed from one charge to another charge, the positions of the connection plug holes of the acquisition probes can be exchanged, and the double-pole double-throw switch can also be directly switched on the panel.

The acquisition probe may be a needle probe 2 or an area probe 3, such as the needle probe 2 shown in fig. 4, the needle probe 2 comprising a needle tip 201, a coaxial cable 202 and a plug 203, the coaxial cable 202 connecting the needle tip 201 and the plug 203. As shown in fig. 5, the area probe 3 includes a probe plate 301, a coaxial cable and a plug, the coaxial cable connects the probe plate 301 and the plug, and the probe plate 301 includes but is not limited to rectangular, circular, square. The needle probe 2 can collect the discharge current of a single needle tip on the static electricity eliminating rod, and the needle tip 201 can be designed by a transparent insulating tube 204, so that the observation is convenient; the area probe 3 is designed to collect the discharge current in a section of the static eliminating rod (including multiple needle points), and in some preferred embodiments, the probe plate 301 is installed in the insulation detection box 302 by arranging the insulation detection box 302, and the insulation detection box 302 can be designed by transparent materials, so that the observation is convenient.

The tester of the utility model has small volume (200 x 90 mm), light weight (230 g), can be held by a single person with one hand, and can not be limited by a measuring field. In another aspect of the utility model, 4 sections of No. 7 rechargeable batteries are adopted for power supply, and the plastic shell is in insulation design, so that the energy-saving and safe effects are realized.

It will be appreciated by those skilled in the art that the particular configuration of a discharge tester as shown in fig. 1-5 is not limiting of the discharge tester, and that the discharge tester may include more or less components than those shown, and that certain components may not be necessarily included in the discharge tester, may be omitted entirely or combined as desired within the scope of not changing the essence of the utility model.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. Several of the units or means recited in the apparatus claims may also be embodied by one and the same unit or means, either in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides a discharge tester, its characterized in that includes the host computer and is used for gathering discharge signal's acquisition probe, be provided with detection circuitry, AD analog-to-digital converter, calculation controller, display screen in the host computer, wherein, detection circuitry with the acquisition probe is connected for gather the current signal that detects, and will gather the current signal and give AD analog-to-digital converter, AD analog-to-digital converter is used for converting the current signal that gathers into digital quantity and transmits to calculation controller, calculation controller is used for calculating actual detected current numerical value, and transmits to the display screen, the display screen is used for showing the actual value of detected current.

2. The discharge tester according to claim 1, wherein a protection circuit is provided between the detection circuit and the acquisition probe, the protection circuit includes two schottky diodes, the two schottky diodes are connected in anti-parallel, and a ground probe is provided on the circuit of the two schottky diodes.

3. The discharge tester according to claim 1, wherein a power-on button for opening and closing the host and a power supply for supplying electric power are arranged on a panel of the host, the power supply is connected with the computing controller, and an input end of the power-on button is connected to a circuit connected with the power supply and the computing controller.

4. The discharge tester according to claim 2, wherein a double-pole double-throw switch switching circuit is further arranged in the host, one end of the double-pole double-throw switch switching circuit is connected with the acquisition probe and the grounding probe, and the other end of the double-pole double-throw switch switching circuit is connected with the two schottky diodes.

5. The discharge tester of claim 1, wherein the collection probe comprises a needle tip, a coaxial cable, and a plug, the coaxial cable connecting the needle tip and the plug.

6. The discharge tester of claim 5, wherein an insulating tube is disposed outside the tip.

7. The discharge tester of claim 6, wherein the insulating tube is a transparent insulating tube.

8. The discharge tester of claim 1, wherein the acquisition probe comprises a probe plate, a coaxial cable, and a plug, the coaxial cable connecting the probe plate and the plug.

9. The discharge tester of claim 8, wherein the acquisition probe further comprises an insulation detection box, and the probe plate is mounted in the insulation detection box.

10. The discharge tester of claim 9 wherein the insulation detection cartridge is a transparent material.