A photosensitive tube-based information receiving device and information receiving method
An information receiving, photosensitive tube technology, applied in electromagnetic receivers and other directions, can solve problems such as failure to meet the set requirements, light and dark flickering, etc.
Inactive Publication Date: 2016-06-22
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology
If the light source is required to maintain normal illumination and at the same time carry out information transmission, the above-mentioned traditional visible light receiving methods will cause light and dark flickering phenomena detectable by the human eye, which cannot meet the set requirements
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[0026] The information receiving device based on the photosensitive tube of the present invention includes a housing, and a visible light information receiving circuit is arranged in the housing. Such as figure 1 As shown, the visible light information receiving circuit includes a phototransistor T1, an amplification and filtering circuit, and a single-chip microcomputer connected with a clock circuit. The collector of the phototransistor T1 is connected to the power supply, and the emitter of the phototransistor T1 is connected to the anode of the diode D1; the emitter of the phototransistor T1 is also grounded through the first resistor R1; the cathode of the diode D1 is connected to the base of the amplifying transistor T2, and the diode D1 The negative pole of the amplifying transistor T2 is also connected to the ground through the first capacitor C1; the collector of the amplifying transistor T2 is connected to the power supply through the second resistor; the collector o...
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The invention discloses an information receiving device based on a photosensitive tube, which includes a casing, in which a visible light information receiving circuit is arranged, and the visible light information receiving circuit includes a photosensitive triode, an amplification filter circuit and a single-chip microcomputer connected with a clock circuit. The invention utilizes the photosensitive triode to receive the LED lights generated by the lighting equipment with information transmission function driven by different frequency modulation signals, and controls the conduction and cut-off of the amplifying triode through the signal generated by the photosensitive triode, so that the amplifying triode is turned on and cut off in the single-chip microcomputer. The high and low levels generated by the counter input pin of the counter realize the signal input; then use a single-chip microcomputer connected with a clock circuit and a counter function to calculate the signal frequency received by the counter input pin in a fixed period, and correspond to the different signal frequencies in ASCII The encoded code values "0" and "1" finally obtain the transmitted information, which is automatically distinguished and stored.
Description
technical field [0001] The invention relates to an information receiving device and an information receiving method based on a photosensitive tube, belonging to the field of visible light wireless receiving, and in particular to an information receiving device and an information receiving method based on a photosensitive tube. Background technique [0002] At present, the traditional way of receiving visible light is mainly to receive the "presence or absence" of the light source light or the "strong or weak" light intensity through the photosensitive sensor to represent the two states of "0" and "1" of the signal. In this traditional way of sending and receiving information using visible light, the light source will inevitably produce bright and dark flickering phenomena during the information transmission process. If the light source is required to maintain normal illumination and transmit information at the same time, the above-mentioned traditional visible light receivin...
Claims
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IPC IPC(8): H04B10/69
Inventor 陈建明马强曹文思袁保合孙标周晓明赵明明刘子介陈嘉琦常瑞尚华徐燕王成凤
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER