Circuit, method and device for detecting temperature sensing bulb

Abstract

The invention discloses a circuit, a method and a device for detecting a temperature sensing bulb. The circuit comprises a power supply circuit, a temperature compensation correction circuit and a resistance detection circuit, wherein the power supply circuit is used for providing electric energy for the circuit for detecting the temperature sensing bulb; the temperature compensation correction circuit comprises one or a plurality of detection circuits and a voltage acquisition circuit; each detection circuit comprises a power supply interface, a serial interface and a standard resistance circuit; each power supply interface is connected with the power supply circuit and is used for acquiring electric energy of the power supply circuit; the standard resistance circuit is connected with the serial interface; the detected temperature sensing bulb is connected in series with the detection circuits by the serial interfaces; change rates of the standard resistance circuits and the detected temperature sensing bulb along with the temperature are the same; the voltage acquisition circuit is connected with the serial interfaces and is used for acquiring series voltages of the serial interfaces; and the resistance detection circuit is connected with the voltage acquisition circuit and is used for acquiring testing results of the series voltages and a reference voltage. By adopting the circuit, the method and the device for detecting the temperature sensing bulb, the technical problem of low efficiency of detecting the resistance of the temperature sensing bulb and sorting in the prior art is solved and rapid and accurate detection on the resistance of the temperature sensing bulb and sorting are realized.

Description

technical field [0001] The invention relates to the field of temperature sensing package detection, in particular to a temperature sensing package detection circuit, method and device. Background technique [0002] At present, the temperature sensing package used in the frequency conversion has various specifications such as 15K, 20K, and 50K, and the temperature sensing package used in the frequency conversion external machine also connects the temperature sensing package of 15K, 20K, and 30K to the same terminal. The resistance value of the temperature sensing package at 25°C is its most important parameter. This test value determines whether the temperature sensing package is qualified. At present, these temperature sensing packages are tested by measuring their resistance with a multimeter to determine whether they are qualified. However, the environment Temperature will affect the measured resistance value of the temperature-sensing package. Therefore, to check whether ...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a temperature-sensing package detection circuit, method and device to at least solve the technical problems of detecting the resistance value of the temperature-sensing package and low sorting efficiency in the prior art

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