Intelligent multi-meter with automatic function selection
First Claim
1. A measuring device with function of automatically selecting measuring function, comprising:
- a controller for sequentially providing a plurality of checking phases;
a protection circuit with a first end connecting to an input end connected with DUT and a second end connecting to said controller, performing switching action according to signal of said controller;
a switch composed of a plurality of test circuits, with a first end connecting to third end of said protection circuit, a second end connecting to said controller and sequentially performing switching action according to said plurality of checking phases for sequentially connecting said plurality of test circuits with said protection circuit, and said third end connecting to a current input end; and
a DUT type detector with a first end connecting to a third end of said switch, sequentially comparing voltage of said input end with a comparison circuit and transmitting the result of comparison to said controller with a second end;
wherein said controller determines type of DUT according to result of comparison transmitted by said DUT type detector.
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Accused Products
Abstract
A measuring device with the function of automatically determining the type of device under test (DUT) and selecting measuring function. The measuring device having a controller for sequentially providing a plurality of checking phases; a protection circuit connecting to input end and protecting the measuring device; a switch composed of a plurality of test circuits, being connected to the controller and sequentially connecting the plurality of test circuits with the output end of the protection circuit; a plurality of DUT type detectors, connecting to the switch and comparing the voltage of input end sequentially through a plurality of comparison circuits, transmitting the result of comparison to the controller for determining the type of DUT; and a measurement unit connecting to the controller, measuring the DUT according to the result of determination of the controller and displaying the result of measurement on a display.
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Citations
20 Claims
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1. A measuring device with function of automatically selecting measuring function, comprising:
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a controller for sequentially providing a plurality of checking phases; a protection circuit with a first end connecting to an input end connected with DUT and a second end connecting to said controller, performing switching action according to signal of said controller; a switch composed of a plurality of test circuits, with a first end connecting to third end of said protection circuit, a second end connecting to said controller and sequentially performing switching action according to said plurality of checking phases for sequentially connecting said plurality of test circuits with said protection circuit, and said third end connecting to a current input end; and a DUT type detector with a first end connecting to a third end of said switch, sequentially comparing voltage of said input end with a comparison circuit and transmitting the result of comparison to said controller with a second end; wherein said controller determines type of DUT according to result of comparison transmitted by said DUT type detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A measuring device with function of automatically selecting measuring function, comprising:
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a controller for sequentially providing a plurality of checking phases; a protection circuit with a first end connecting to an input end connected with DUT and a second end connecting to said controller, performing switching action according to signal of said controller; a switch composed of a plurality of test circuits, with a first end connecting to third end of said protection circuit, a second end connecting to said controller and sequentially performing switching action according to said plurality of checking phases for sequentially connecting said plurality of test circuits with said protection circuit, and a third end connecting to a current input end; a DUT type detector with a first end connecting to said third end of said switch, sequentially comparing voltage of said input end with a comparison circuit and transmitting the result of comparison to said controller with a second end; and a measurement unit, connecting to said controller for performing measurement on said DUT. - View Dependent Claims (19, 20)
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Specification