Intelligent insect counting and information transmission device
An information transmission and intelligent technology, applied in the fields of trapping or killing insect devices, counting mechanisms/items, messages/mailboxes/announcements, etc. issues of reliability, reliability, and possibility
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Embodiment 1
[0047] Such as figure 2 , Emitting part of the circuit, choose a straw hat type 840nm infrared emission tube with a emission angle of 120°, and connect the emission tube through a 5V power supply through a current-limiting resistor.
Embodiment 2
[0049] Such as image 3 , the receiving part of the circuit, the LED infrared receiving tube, connects the generated current to a 1k sliding rheostat through an analog switch, here is 500 ohms, the function of the sliding rheostat is to convert the current into a voltage, 300ua×(500+500Ω)=0.3 v, due to the pressure division effect of the internal resistance of the analog switch, there is a voltage of 0.15v. Amplify the voltage by 30 times and make it a high level. Considering individual differences, the feedback resistance of the second-stage op amp is 50k, and the magnification of the connection resistor 1k is 50 times. The pre-stage op amp is connected as a voltage follower to shield Remove the pre-resistor, LM324 is powered by dual power supply. The -5V power supply is converted by the ICL7660 negative voltage chip, and the 104 capacitor and the 10uf capacitor between the power supply and the ground filter high frequency and low frequency respectively. Then AD conversion ...
Embodiment 3
[0051] Such as Figure 4 , the peripheral circuit of the single-chip microcomputer, the STC90C516AD single-chip microcomputer is selected, the crystal oscillator selected for the clock circuit is 11.0592MHZ (if you use the serial port of the single-chip microcomputer, it is best to choose 11.0592MHZ here, because the baud rate of many serial ports is 9600, there is no error in choosing 11.0592), the capacitance of the crystal oscillator It is 33pf (about 30pf is enough). The reset circuit is a typical button reset circuit with a resistance of 10k and a capacitance of 10uf. Note that pin 31 is connected to high level and does not access external memory. The other ports and serial ports of P0, P2, and P1 are all connected to the terminal block (connected with other modules through DuPont lines), and the digital tube display is driven by dynamic scanning.
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