Electrostatic voltage test unit

Abstract

The utility model relates to the technical field of electronic and electrical detection, and discloses a static voltage testing unit, which comprises a sampling end, voltage dividing units, a voltage amplifying unit and an upper computer, the sampling end is arranged at a clothing sampling part, the sampling end samples a group of high and low potentials, and the high and low potentials are respectively divided by one voltage dividing unit and then are amplified by the voltage amplifying unit. And after being amplified by the voltage amplification unit, the voltage division signal is sent to an upper computer to be displayed, and the voltage signal sampled by the sampling end is 0-100V. According to the utility model, the sampling voltage is subjected to voltage division amplification and then is subjected to real-time processing display and board division by the upper computer, so that the electrostatic generation, maintenance and extinction processes of clothes are comprehensively monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic and electrical detection, in particular to an electrostatic voltage testing unit. Background Art

[0002] During the textile testing process, the electrostatic discharge voltage must be measured as an indicator of textile products. It is used to measure the real-time static electricity amount, cumulative static electricity amount, and voltage change process during the discharge process of synthetic fibers.

[0003] Since the electrostatic discharge process is fast and the voltage changes greatly, conventional instruments cannot detect it at all. There are few technologies in the existing technology that can perform real-time voltage detection on the electrostatic voltage of textile fibers during the discharge process.

[0004] In the field of fine textiles, high-voltage electrostatic discharge can also damage the fiber structure, causing discomfort to users. How to quantitatively detect electrostatic discharge in the early stages of fiber research will undoubtedly provide early predictions for fine textiles. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and provide an electrostatic voltage testing unit, which comprehensively monitors the static electricity generation, maintenance and elimination process of clothing by dividing and amplifying the sampled voltage and then performing real-time host computer processing, display and board division.

[0006] The technical solution adopted by this utility model is:

[0007] An electrostatic voltage test unit is characterized in that it includes a sampling end, a voltage divider unit, a voltage amplification unit and a host computer. The sampling end is arranged at a sampling position of clothing. The sampling end samples a group of high and low potentials, and after being divided by one of the voltage divider units respectively, the voltage division signal is amplified by the voltage amplification unit and sent to the host computer for display. The voltage signal sampled by the sampling end is 0-100V.

[0008] Furthermore, the voltage divider unit includes a first voltage divider resistor and a second voltage divider resistor, a voltage divider signal line is connected between the two voltage divider resistors, the voltage amplification unit includes a positive and negative potential, the voltage divider signal line is connected between a positive and negative potential, a first forward diode is connected between the negative potential and the voltage divider signal line, a second forward diode is connected between the voltage divider signal line and the positive potential, the voltage divider signal line is connected to a capacitor and then grounded, and the voltage divider signal line outputs the amplified voltage to the host computer.

[0009] Furthermore, the second forward diode is eliminated.

[0010] Furthermore, the positive and negative potentials are +2.5V and -2.5V respectively.

[0011] Furthermore, the voltage signal sampled by the sampling end is 0-100V, and the resistance ratio of the first voltage-dividing resistor to the second voltage-dividing resistor is 30:1 to 40:1.

[0012] Furthermore, the voltage signal sampled by the sampling end is 0-50V, and the resistance ratio of the first voltage-dividing resistor to the second voltage-dividing resistor is 15:1 to 20:1.

[0013] Furthermore, the voltage testing unit includes a multi-channel sampling terminal, a voltage dividing unit, a voltage amplifying unit, and is finally connected to a host computer.

[0014] The beneficial effects of the utility model are:

[0015] (1) The circuit is simple, the detection accuracy is high, and it is less affected by external interference;

[0016] (2) The voltage is boosted through the voltage divider resistor, diode capacitor boost circuit and then transmitted to the host computer in real time for display and analysis;

[0017] (3) Multiple detection modules operate simultaneously to conduct full-area detection of all parts of the clothing to fully understand the static electricity situation of the clothing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 This is a 0-100V static detection circuit diagram;

[0019] Attachment Figure 2 This is a 0-100V static detection circuit diagram;

[0020] Attachment Figure 3 This is a common detection circuit diagram of multiple detection circuits. DETAILED DESCRIPTION

[0021] The specific implementation of the electrostatic voltage testing unit of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] See attached Figure 1 、 2 ,The electrostatic voltage test unit collects static electricity on clothing through the ,sampling end. The sampling end is a bimetallic electrode that is ,arranged at two points on the clothing. The metal electrode wire is ,leaded out through the SMA interface shielded wire.

[0023] The SMA interface shielded cable is divided into two paths, connecting the voltage divider unit consisting of the first voltage divider resistor and the second voltage divider resistor. For the 0-100V electrostatic voltage test, the resistance ratio of the first voltage divider resistor to the second voltage divider resistor is 30:1 to 40:1. Figure 1The two resistors in the circuit are 390KΩ and 10KΩ respectively. For the 0-50V electrostatic voltage test, the resistance ratio of the first voltage divider resistor to the second voltage divider resistor is 15:1 to 20:1. Figure 2 The two resistors in the circuit have values of 158KΩ and 8.2KΩ respectively.

[0024] The voltage-divided signal line, after voltage division, is located between two diodes connected by a positive and negative potential, and finally connected to ground through a capacitor, forming a voltage amplification unit. A first forward diode is connected between the negative potential of the positive and negative potential and the voltage-divided signal line, and a second forward diode is connected between the voltage-divided signal line and the positive potential. The voltage-divided signal line is connected to a capacitor and then to ground. The voltage-divided signal line outputs the amplified voltage to the host computer.

[0025] Where high precision is required, the second forward diode is removed and only the second forward diode is retained. The positive and negative potentials are +2.5V and -2.5V.

[0026] The working principle is that the signal receives the estimated electrostatic voltage on the clothing. After voltage division, due to the real-time change of the electrostatic voltage signal, it fluctuates rapidly. The positive and negative conduction control of the two diodes and the capacitor are used to amplify the voltage signal. The amplified voltage signal is input to the host computer. The host computer calculates the actual electrostatic voltage data based on the voltage division and amplification parameters, and displays it in the form of charts.

[0027] See attached Figure 3 In this application, multiple detection points are set at various locations on the garment. The figure shows eight detection points, forming multiple sampling terminals, voltage dividers, and voltage amplifiers, which are then connected to the host computer. The multiple detection points do not interfere with each other, and the host computer outputs them separately.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An electrostatic voltage test unit, characterized in that: It includes a sampling end, a voltage divider unit, a voltage amplification unit and a host computer. The sampling end is set at the sampling part of the clothing. The sampling end samples a group of high and low potentials, and after being divided by one of the voltage divider units respectively, the voltage divided signal is amplified by the voltage amplification unit and sent to the host computer for display. The voltage signal sampled by the sampling end is 0-100V.

2. The electrostatic voltage testing unit according to claim 1, wherein: The voltage divider unit includes a first voltage divider resistor and a second voltage divider resistor, a voltage divider signal line is connected between the two voltage divider resistors, the voltage amplification unit includes a positive and negative potential, the voltage divider signal line is connected between a positive and negative potential, a first forward diode is connected between the negative potential and the voltage divider signal line, a second forward diode is connected between the voltage divider signal line and the positive potential, the voltage divider signal line is connected to a capacitor and then grounded, and the voltage divider signal line outputs the amplified voltage to the host computer.

3. The electrostatic voltage testing unit according to claim 2, wherein: The second forward diode is cancelled.

4. The electrostatic voltage testing unit according to claim 2, wherein: The positive and negative potentials are +2.5V and -2.5V respectively.

5. The electrostatic voltage testing unit according to claim 2, wherein: The resistance ratio of the first voltage-dividing resistor to the second voltage-dividing resistor is 30:1 to 40:

1.

6. The electrostatic voltage testing unit according to claim 2, wherein: The voltage signal sampled by the sampling end is 0-50V, and the resistance ratio of the first voltage-dividing resistor to the second voltage-dividing resistor is 15:1 to 20:

1.

7. The electrostatic voltage testing unit according to any one of claims 1 to 3, characterized in that: The voltage testing unit includes a multi-channel sampling terminal, a voltage dividing unit, a voltage amplifying unit, and is finally connected to a host computer.

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