Voltage and current test combined instrument

Abstract

The utility model relates to the technical field of electronic and electrical detection, and discloses a voltage and current test combined instrument, which comprises a shell and a circuit substrate arranged in the shell, a battery is arranged on the circuit substrate and is used for providing electric energy, a plurality of current test modules and a plurality of voltage test modules are arranged on the circuit substrate, and the current test modules and the voltage test modules are connected with the shell. The side edge of the circuit substrate is provided with a plurality of SMA voltage shielding interfaces and a plurality of SMA current shielding interfaces, each SMA voltage shielding interface is connected with one voltage test module, each SMA current shielding interface is connected with one current test module, the circuit substrate is further provided with a signal output port, and the signal output port is used for being connected with an upper computer. According to the utility model, voltage detection and weak current detection are integrated on one instrument, so that the static voltage and the discharge weak current of the clothing fiber can be accurately measured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic and electrical testing, in particular to a voltage and current testing combined instrument. Background Art

[0002] During textile testing, the electrostatic discharge voltage is measured as an indicator of textile products. This is used to measure the real-time static electricity and accumulated static electricity during the testing of synthetic fibers, as well as the voltage change during the discharge process. At the same time, the weak current during the discharge process is also tested to test the electrochemical properties of clothing fibers.

[0003] Existing electrostatic voltage detection and discharge weak current detection are completed by voltage detection equipment and weak current detection equipment respectively. Since the voltage and weak current of the discharge process must be detected simultaneously during the electrostatic discharge process, detection errors between different devices and signal asynchrony problems greatly reduce the accuracy of the detection data.

[0004] In addition, when detecting electrostatic voltage and discharge current, some signal lines must be shared, which also brings problems to the detection between different instruments. The signal line branching setting increases the length of the signal line. In particular, the weak current detection process is greatly affected by external interference, which directly affects the detection accuracy. Utility Model Content

[0005] The purpose of this utility model is to solve the above problems and provide a voltage and current test combination instrument, which integrates voltage detection and weak current detection into one instrument to achieve accurate measurement of clothing fiber static voltage and discharge weak current.

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

[0007] A voltage and current test combination instrument is characterized in that it includes a shell and a circuit substrate installed in the shell, a battery is installed on the circuit substrate, the battery is used to provide electrical energy, multiple current test modules and voltage test modules are provided on the circuit substrate, a plurality of SMA voltage shielding interfaces and a plurality of SMA current shielding interfaces are provided on the side of the circuit substrate, each SMA voltage shielding interface is connected to a voltage test module, and each SMA current shielding interface is connected to a current test module, and a signal output port is also provided on the circuit substrate, and the signal output port is used to connect to a host computer.

[0008] Furthermore, a plurality of SMA voltage shielding interfaces and a plurality of SMA current shielding interfaces are located on the side of the shell and extend out of the shell.

[0009] Furthermore, the number of the SMA voltage shielding interfaces is 8, which are arranged side by side on the side of the shell, and the number of the SMA current shielding interfaces is 8, which are arranged side by side on the side of the shell.

[0010] Furthermore, the current testing module includes a plurality of jack sockets arranged on a circuit substrate, a current signal board is inserted into each jack socket, each SMA current shielding interface corresponds to a jack socket, the current signal board is used to process the current signal, and the jack socket is used to connect the current signal board and the circuit substrate.

[0011] Furthermore, an output interface is provided at the rear of the housing, and the output interface is used to connect to a host computer.

[0012] Furthermore, the weak current tested by the current testing module is 0.1mA to 1nA, and the electrostatic voltage tested by the voltage testing module is 0-100V.

[0013] Furthermore, the battery is a 9V stacked battery, which is fixedly mounted on the circuit substrate.

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

[0015] (1) Integrating voltage detection and weak current detection into one instrument, with low interference and high detection accuracy;

[0016] (2) Multiple voltage and current signals are detected simultaneously and output to the host computer for graphical analysis;

[0017] (3) The current signal board separation design of the weak current detection module provides a convenient solution for switching and updating for multi-channel current testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 It is a front view of the instrument housing;

[0019] Attachment Figure 2 is a side view of the instrument housing;

[0020] Attachment Figure 3 This is a plan view of a circuit board.

[0021] The reference numerals in the accompanying drawings are:

[0022] 1. Housing; 2. SMA voltage shielding interface;

[0023] 3.SMA current shielding interface; 4.Circuit board;

[0024] 5.Battery; 6.Current test module;

[0025] 7. Voltage test module; 8. Current signal board;

[0026] 9. Output interface. DETAILED DESCRIPTION

[0027] The specific implementation of the voltage and current test combination instrument of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] See attached Figure 1 、 2 The voltage and current test combination instrument has voltage input interface holes on its housing 1, located on one side of the housing 1. The housing 1 is sealed to prevent external electrical signal interference. A metal or partial metal housing can be used to reduce external electrical signal interference. The interface holes can be located on different sides of the housing 1, depending on its layout.

[0029] See attached Figure 3 A circuit substrate 4 is installed in the housing 1, and a battery 5 is installed on the circuit substrate 4. The battery 5 is used to provide electrical energy. The battery 5 is a 9V laminate battery and is fixedly installed on the circuit substrate 4. The circuit connection is achieved through the battery 5 buckle.

[0030] The circuit substrate 4 is provided with multiple current test modules 6 and voltage test modules 7. Several SMA voltage shielding interfaces 2 are provided on one side of the circuit substrate 4, and each SMA voltage shielding interface 2 is connected to one voltage test module 7. Several SMA current shielding interfaces 3 are provided on the other side of the circuit substrate 4, and each SMA current shielding interface 3 is connected to one current test module 6. A signal output port is also provided on the circuit substrate 4, and the signal output port is used to connect to the host computer.

[0031] The SMA voltage shielding connector 2 and SMA current shielding connector 3 extend from the interface holes in the housing 1 and are used to connect the acquisition terminal cables on the garment. The acquisition terminal connection terminal is female, and the shielding connector on the circuit board 4 is male. The location of the SMA voltage shielding connector 2 and SMA current shielding connector 3 can be optimized based on the housing 1 and circuit board 4 and is not limited to the side or front edges.

[0032] Attachment Figure 3 There are eight SMA voltage shielding connectors 2 arranged side by side on the side of the housing 1, and eight SMA current shielding connectors 3 arranged side by side on the front of the housing 1. This allows for simultaneous measurement of eight sets of voltage and current values. The SMA voltage shielding connectors 2 and SMA current shielding connectors 3 are arranged separately, with the corresponding holes on the housing 1 also located on both sides, as different embodiments.

[0033] See the attached Figure 3The current test module 6 includes multiple jacks disposed on the circuit substrate 4. Each jack is plugged into a current signal board 8. Each SMA current shielding interface 3 corresponds to a jack. The current signal board 8 is used to process current signals, and the jack is used to connect the current signal board 8 to the circuit substrate 4. Each current signal board 8 measures only one current signal line.

[0034] On the rear side of the circuit board 4, an output interface 9 is provided, extending from the rear end of the housing 1, and is used to connect to a host computer. The current test module 6 of this patent tests weak currents of 0.1mA to 1nA, and the voltage test module 7 tests electrostatic voltages of 0-100V.

[0035] 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. A voltage and current test combination instrument, characterized by: It includes a shell and a circuit substrate installed in the shell. A battery is installed on the circuit substrate, and the battery is used to provide electrical energy. The circuit substrate is provided with multiple current test modules and voltage test modules. Several SMA voltage shielding interfaces and several SMA current shielding interfaces are provided on the side of the circuit substrate. Each SMA voltage shielding interface is connected to a voltage test module, and each SMA current shielding interface is connected to a current test module. A signal output port is also provided on the circuit substrate, and the signal output port is used to connect to a host computer.

2. The voltage and current test combination instrument according to claim 1, characterized in that: A plurality of SMA voltage shielding interfaces and a plurality of SMA current shielding interfaces are located on the side of the shell and extend out of the shell.

3. The voltage and current test combination instrument according to claim 2, characterized in that: The number of the SMA voltage shielding interfaces is 8 and they are arranged side by side on the side of the shell. The number of the SMA current shielding interfaces is 8 and they are arranged side by side on the side of the shell.

4. The voltage and current test combination instrument according to any one of claims 1 to 3, characterized in that: The current testing module includes multiple jack sockets arranged on a circuit substrate, each jack socket is plugged into a current signal board, each SMA current shielding interface corresponds to a jack socket, the current signal board is used to process the current signal, and the jack socket is used to connect the current signal board and the circuit substrate.

5. The voltage and current test combination instrument according to any one of claims 1 to 3, characterized in that: An output interface is provided at the rear of the housing, and the output interface is used to connect to a host computer.

6. The voltage and current test combination instrument according to any one of claims 1 to 3, characterized in that: The current testing module tests a weak current of 0.1 mA to 1 nA, and the voltage testing module tests an electrostatic voltage of 0-100 V.

7. The voltage and current test combination instrument according to any one of claims 1 to 3, characterized in that: The battery is a 9V stacked battery and is fixedly mounted on the circuit substrate.

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