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Intelligent measuring device automatically selecting measuring functions

An automatic selection and measurement technology, applied in multiple tester circuits, changing range circuits, etc., can solve problems such as damage to the measuring device and the measuring personnel, the injury of the measuring person, and the circuit damage of the measuring device.

Active Publication Date: 2012-11-28
CYRUSTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the input is a high-voltage signal, if the measurement function is selected incorrectly, not only the circuit in the measurement device will be damaged, but also the measurer may be injured.
Such a process will reduce the efficiency and inconvenience of the work, especially when the wrong choice is made, in addition to the time of doubt, it may also harm the measuring device and the measuring personnel

Method used

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  • Intelligent measuring device automatically selecting measuring functions
  • Intelligent measuring device automatically selecting measuring functions
  • Intelligent measuring device automatically selecting measuring functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Please refer to figure 1 , is a circuit function block diagram of the measuring device for automatically judging the type of the object to be tested according to the present invention, including a control unit (CONTROLLER) 10, a switching unit (SWITCH) 20, a detection unit (DUT TYPE DETECTOR) 30, an analog / digital conversion Circuit (AD / DA CONVERTER) 40, data processing circuit (DATA PROCESSING CIRCUIT) 50, display device (DISPLAY) 60, short circuit detection unit (SHORT DETECTOR) 70, buzzer (BUZZER) 80, gear control circuit (RANGECONTROL CIRCUIT) 90, protection circuit (PROTECTION CIRCUIT) 100, large voltage detection unit (LARGE VOLTAGE DETECTOR) 110, current detection unit (CURRENT DETECTOR) 120 and so on. In addition, V_in and I_in are input terminals of voltage and current respectively, and GND represents a ground.

[0029]The measurement process is mainly divided into a scan mode and a measure mode. The scan mode includes seven checking phases. The above-mention...

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Abstract

The invention discloses a measuring device which automatically judges the category of an object to be measured and selects measuring functions. The measuring device comprises a control unit which is used for sequentially providing a plurality of detection stages; a protection circuit in which one input terminal is connected with the measuring device and used for protecting the measuring device; aswitching unit which consists of a plurality of test circuits, is connected with the control unit, and sequentially connects output terminals of a plurality of test circuits and the output terminals of the protection circuit; a plurality of detection units which are connected with the switching unit, wherein, a plurality of comparison circuits sequentially compare the voltage at input terminals, and send comparison results back to the control unit so as to judge the category of the object to be measured; and a measuring unit which is connected with the control unit, measures the object to be measured according to judgment results of the control unit, and displays measurement results on a display device.

Description

technical field [0001] The present invention relates to a multi-functional testing device for a test object and its testing method, in particular to a measuring device capable of automatically judging the type of a test object without a selection switch and its testing method, for example A multi-meter for automatically judging the type of the object to be measured. Background technique [0002] At present, various automatic function selecting multi-meters (Automatic function selecting multi-meter) can display the measurement results in digital form, such as displaying DC voltage value or AC voltage value, resistance value or capacitance value. , diode or circuit path test results, etc. The above-mentioned functions are generally switched by a rotation knob or a button, and the user must judge and select the measurement function by himself, and manually switch to the measurement function to be executed. [0003] Although some multimeters have claimed to have an intelligent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R15/12G01R15/09
Inventor 黎俊良
Owner CYRUSTEK