Measurement circuit capable of detecting performances of lamp

Abstract

The invention relates to a measurement circuit capable of detecting performances of a lamp. The measurement circuit is characterized by comprising a single chip microcomputer, a voltage measurement circuit, a current measurement circuit, a light intensity detection circuit and a display drive circuit, wherein the single chip microcomputer is provided with eight paths of A / D (analog-digital) inputs, the six paths of the A / D inputs are divided into three groups, two of the three groups of the A / D inputs are used for detecting voltage and current of a power supply seat load, voltage inductance passes through a voltage transformer, the voltage transformer is connected with a loading circuit in series, and current passing through a load is inducted by a current transformer; and the measurement circuit is provided with three groups of current transformers and three groups of voltage transformers, the three groups of current transformers and the three groups of voltage transformers are used for measuring signals amplified by an amplifier and transmitting the signals into a port of the single chip microcomputer with the eight paths of A / D inputs, and the single chip microcomputer converts the analog quantity of the current and the voltage into digital quantity and transmits a digital voltage value, a digital current value and a power value to be displayed on an LCD (liquid crystal display) through an LCD drive circuit. The measurement circuit capable of detecting the performances of the lamp, disclosed by the invention, has the advantages that a lamp circuit is provided with a detecting circuit for detecting the voltage and the current and a light detecting circuit for detecting the light intensity, and the current of a load connected with the lamp and the loaded voltage are displayed on the display in one step, so that a consumer can conveniently know the lamp to select a required lamp required by a consumer; and a plurality of lamps are detected and displayed in one step so that the vision effect is more remarkable.

Description

technical field [0001] The invention relates to a measurement circuit for performance detection of lamps, which is used for comparison of different lamps. Background technique [0002] Lamps from different manufacturers, such as energy-saving lamps and LED lamps, have a nominal value such as power and lumens. Due to the different technologies used in the lamps, the actual power and lumens are quite different. Generally speaking, the higher the power, the greater the number of lumens. But with the same power, these two values ​​should be similar when they are of the same model. For users, they seldom care about the number of lumens, but only about the number of power. The power of LED lights on the market is 12w, but the actual light power is 7w. In fact, LED lights also have different light effects. For example, the same white LED adopts different specifications, and its lumens are also different. Contents of the invention [0003] The object of the present invention i...

AI Technical Summary

Problems solved by technology

In fact, LED lamps also have different light effects. For example, the same white LED adopts different specifications, and its lumens are also different. This provides convenience for manufacturers to mix up and make consumers deceived without knowing the truth.

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