Chip tester and test method thereof

Abstract

The invention provides a chip tester and a test method thereof. The tester comprises a case which is provided with a detection needle and a detection result display device, wherein the case is provided with a circuit board provided with a first detection unit, the first detection unit is provided with a microcontroller and a storage, the storage stores preset data, the circuit board is provided with a second detection unit which comprises a frequency comparer, and one output end of the second detection unit is connected with the detection needle. The method comprises the following steps: outputting a first detection signal and a second detection signal by the detection needle via the microcontroller; after receiving a first feedback signal and a second feedback signal, judging whether data represented by the first feedback signal is coincident with the preset data; meanwhile, inputting the second feedback signal to the frequency comparer; judging whether the input frequency is within the error range of frequency output by a frequency generator by the frequency comparer; and outputting the detection result. The invention can detect whether the piezoelectric sensor of an ink box can normally work nor not, and ensures that the ink box can be normally used.

Description

technical field [0001] The invention relates to a tester, in particular to a chip tester for testing ink cartridge chips and a test method for the chip tester. Background technique [0002] Inkjet printers are common printing devices that provide great convenience for modern offices. Existing inkjet printers mainly use ink cartridges detachably installed in the printing carriage to spray ink to paper to form required characters and patterns on paper. [0003] An existing ink cartridge such as figure 1 As shown, the ink cartridge 1 has a casing 11 , the casing 11 encloses a cavity containing ink, and an ink outlet 12 is provided below the cavity through which the ink in the cavity flows out. [0004] In order for the inkjet printer to display the current usage of the ink cartridge 1 , the ink cartridge 1 is mostly equipped with a chip that stores data related to the ink cartridge 1 . Such as figure 1 As shown, a chip 14 is provided on a side wall 13 of the housing 11 of t...

AI Technical Summary

Problems solved by technology

[0010] However, the existing chip tester is only equipped with a detection unit for judging whether the electronic module is correctly written in data, and cannot detect whether the piezoelectric sensor or similar components are working normally. Once the ink cartridge with a defective piezoelectric sensor is installed in the inkjet printer On the contrary, the inkjet printer will think that the ink in the ink cartridge is insufficient and cannot work, which will bring great inconvenience to the user

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