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Legs Conditioning Platform

1. 18. 2. 17. 3. 16. 4. 15. PIC1 8 F 1320. 5V. LM7805. 5. 14. 6. 13. 22 m f. 2.2 m f. 7. 12. 8. 11. 9. 10. Straight Gauge An0. CS Strain. A 0 /AN 0. B3 /AN1 /CCP1. Curved Gauge An1. A 1 /AN 1. B2 / INT2. 10K. A4 /AN4. A7/Osc1. A6/Osc2. MCLR / RA5/ Vpp. 5V.

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Legs Conditioning Platform

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  1. 1 18 2 17 3 16 4 15 PIC18F1320 5V LM7805 5 14 6 13 22mf 2.2mf 7 12 8 11 9 10 Straight Gauge An0 CS Strain A0 /AN0 B3 /AN1/CCP1 Curved Gauge An1 A1 /AN1 B2/INT2 10K A4 /AN4 A7/Osc1 A6/Osc2 MCLR/RA5/Vpp 5V VSS VDD Accel. X An2 CS Accel. A2/AN2 B7/PGD Accel. Y An3 DO A3/AN3 B6/PGC CLK B0/AN4/INT0 B5 B1/AN5/TXINT1 B4/AN6/RX 100 nf 820Ω 820Ω 5V 5V Conditioned Output Connector 9 Straight Gauge An0 Leg Conditioning Platform Vers. 1.0 Curved Gauge An1 + + RS232Connector Accel. Y An2 Virgilio Mattoli Aug/24/04 Accel. X An3 1 BDML pag. 1/5 Legs Conditioning Platform +7 / +15 V

  2. 5V 5V Refernce Voltage 10K LM6152(1/2) LM6152 (1/2) 5V X 10 X 10 10K Ref AMPs Ref DACs Leg Input Connector 5V 1 CurvedInput Accel. X Input 9 Straight Input _ _ Accel. Y Input 5V 5V + + MAX 5154 MAX 5154 DAC 1 1 16 16 2 2 15 15 Straight DAC OutPut Accel. X DAC OutPut Curved DAC OutPut Accel. Y DAC OutPut 3 3 14 14 5V 5V 4 4 13 13 Ref DACs Ref DACs Ref DACs Ref DACs 5 5 12 12 10K 10K 6 6 11 11 CS Strain CS Accel. 7 7 10 10 DO DO 8 8 9 9 CLK CLK Leg Conditioning Platform Vers. 1.0 DAC Virgilio Mattoli Aug/24/04 BDML pag. 2/5 Legs Conditioning Platform 100nf

  3. 5V Straight Input Straight DAC OutPut Straight Gauge An0 1,5K Ref AMPs 220nf 5V 5V AD623 AD623 AD623 AD623 Accel. Y Input CurvedInput Accel. Y DAC OutPut Curved DAC OutPut Curved Gauge An1 Accel. Y An2 1,5K 1,5K Ref AMPs Ref AMPs 1 Rg 1 Rg 1 Rg 1 Rg Rg 8 Rg 8 Rg 8 Rg 8 220nf 220nf 2 In - 2 In - 2 In - 2 In - Vdd 7 Vdd 7 Vdd 7 Vdd 7 3 In + 3 In + 3 In + 3 In + Out 6 Out 6 Out 6 Out 6 4 Vss 4 Vss 4 Vss 4 Vss Ref 5 Ref 5 Ref 5 Ref 5 5V Accel. X An3 Leg Conditioning Platform Vers. 1.0 Accel. X Input Accel. X DAC OutPut 1,5K Virgilio Mattoli Aug/24/04 Ref AMPs 220nf BDML pag. 3/5 Legs Conditioning Platform 156 Ω G = X 642 156 Ω G = X 642 25K G = X 5 25K G = X 5

  4. PC-TX PC-RX PC-GND MAX233 T2in R2out 1 20 T1in R2in 2 19 R1out T2out 3 18 1 2 3 4 5 R1in V- 4 17 T1out C2- 5 16 Serial RS232 DB9 Connector (Female) 6 7 8 9 GND C2+ 6 15 Vcc V+ 7 14 C1+ C1- PIC Tx 8 13 GND V- PIC Rx 9 12 C2- C2+ Gnd 10 11 5V (In) Leg Conditioning Platform Vers. 1.0 Virgilio Mattoli Aug/24/04 BDML pag. 4/5 Legs Conditioning Platform RS 232 CABLE To RS232Connector

  5. Leg Conditioning Platform Vers. 1.0 Virgilio Mattoli Aug/24/04 BDML pag. 5/5 Legs Conditioning Platform RS232 REMOTE CONTROL Connection with standard RS232 protocol: 9600kbps, 1 stop bit, No handsk Command PC -> Device ASCII Chr “9” = 57 = START Acquisition Data ASCII Chr “8” = 56 = STOP Acquisition Data ASCII Chr “5” = 53 = Autozero Gauges ASCII Chr “6” = 54 = Autozero Accelerometers ASCII Chr “0” = 48 = Set DAC Straight Gauge = 2.5V ASCII Chr “1” = 49 = Set DAC Curve Gauge = 2.5V ASCII Chr “2” = 50 = Set DAC X Acc = 2.5V ASCII Chr “3” = 51 = Set DAC Y Acc = 2.5V Device -> Command PC When received START command, device send acquired value for Gauges and Accelerometers: Each value is four digit in hexadecimal representation (the first oneis ever equal to zero), ranging form 0x0000 = 0V to 0X03FF = 5V . The values are separated by tabulation (9 in ASCII).Each acquisition is separated by a carriage return (13, 10 in ASCII) The order of rows is:Straight gauge value – TAB – Curve gauge value – TAB – Acc X value – TAB – Acc Y value – CR The acquisition can be done configuring in suitable way the the Windows HyperTerminal

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