Application development of technology of electron of power source module
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- source:GERMAN CNC Machining
0, P1.
1 port is used at changing join of the SCK of chip HX711 pin, DOUT with high accuracy A/D, receive digital signal; P1.
5 port are used at calling the police to hint, be linked together with buzzer circuit; P0 port is used at transmitting signal with liquid crystal LCD1602. Weighing heavy sensor is one kind can feel pressure and the pressure that feels signal is changed into with be measured the sensor that object weight proportionate can use at outputting signal, the key that regards an electron as the balance forms one of parts, the option that weighs heavy sensor is very important, of its function good with bad, decided electronic balance measures the dependability of data and accuracy on great rate. To realize the high accuracy that electronic balance designs, tall stability asks, in saying numerously to weigh sensor, this products plan chose BF350 to say to weigh sensor, its strain gauge factor is 2.
00-2.
20, accuracy class is 0.
02 class, limit of meet an emergency is 2.
0% , and power comsumption is low, come loose easily stickup and hot, simple, solder convenient, can remove the effect that temperature change and tiny wave motion bring, the static state that realizes tall stability is measured. To achieve the high accuracy of this design and tall stability demand, the system is used piece inside of the circuit such as oscillator of compositive regulated power supply, clock tall compositive HX711 of degree of core of 24 A/D changeover, its process designing is simple, answer speed fast, when using need not outside receive component, have electrify automatic restoration function. The imitate voltage signal that calls heavy sensor output passes choice A or B passageway transmits HX711, among them of A passageway but process designing gain is 128 or 64, b passageway is fixed 32 gain. The sheet of HX711 and back end piece machine interface circuit is simple, need DOUT, SCK to receive sheet only piece on the I/O mouth of machine, can undertake signal is transmitted. CNC Milling