Biomechanics Gait Analysis Lab - Biomedical Engineering ...

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No current Open Circuit (No Pressure Applied) Closed Circuit (Pressure Applied) Figure 43: Open and Closed Circuit diagram Footswitch Input 10kO DC Output to Transmitter Figure 44: Pull-Down Resistor Set-up The LEMO connectors for the footswitches are similar to the FSR insoles, except they have five pins instead of four. The footswitches were purchased from B&L <strong>Engineering</strong> and came with the male LEMO connectors attached. The male LEMO connector (FGG.0B.305.CLAD52Z) is shown in Figure 45. Page 52
A B C D Figure 45: Male LEMO Connector The following table gives the dimensions for the LEMO connector shown in Figure 45. Metric A L M S1 S2 mm. 9.5 35.0 25.0 8.0 7.0 in. 0.37 1.38 0.98 0.31 0.28 Table 3: Measurements for Figure 45A The female LEMO connector was soldered to the printed circuited board in the transmitter box and is shown in Figure 46. The layout for the lead input is shown in Figure 47, which shows the sections of the foot coming into each pin as well as the input voltage. A B Figure 46: Female LEMO Connector Page 53
Page 1 and 2: Biomechanics Gait Analysis Lab Oper
Page 3 and 4: PARTS AND ACCESSORIES The following
Page 5 and 6: Table of Contents Section Page Numb
Page 7 and 8: The new laboratory utilizes a numbe
Page 9 and 10: Figure 4: FSR Insole The FSR’s ar
Page 11 and 12: Figure 8: Transmitter Box Figure 9:
Page 13 and 14: The receiver connects directly to t
Page 15 and 16: Figure 15:Footswitch Insoles LabVIE
Page 17 and 18: Figure 17: Men’s FSR Insoles LabV
Page 19 and 20: Figure 19:Womens FSR Insoles LabVIE
Page 21 and 22: 3. Place the fanny pack around the
Page 23 and 24: Figure 25: Footswitch Output Wire C
Page 25 and 26: 14. Press the OFF button on the blo
Page 27 and 28: Figure 30: Corrected Toe Sensor Dat
Page 29 and 30: 2. Place the transmitter box into t
Page 31 and 32: 8. Mark a start line on the floor w
Page 33 and 34: Battery Replacement 1. Turn both of
Page 35 and 36: 5. Place the 3v lithium battery in
Page 37 and 38: - Dry the cleaned area with a soft
Page 39 and 40: 3. Humidity The device should not b
Page 41 and 42: The footswitches and force sensitiv
Page 43 and 44: The sensors act as a force sensing
Page 45 and 46: 10-bit analog-to-digital conversion
Page 47 and 48: Figure 38: Microprocessor Circuit f
Page 49 and 50: Metric A L M S1 S2 mm. 9.5 35.0 25.
Page 51: to supply a very small voltage (les
Page 55 and 56: Telemetry: Transmitter Set-up Figur
Page 57 and 58: Figure 50: Receiver Circuit schemat
Page 59 and 60: The 418MHz transmitter/encoder chip
Page 61 and 62: Analog Inputs Digital Inputs Figure
Page 63 and 64: 4. Trouble-Shooting Problem Possibl
Page 65 and 66: 4- If no output coming out of the F
Page 67 and 68: 7. If the footswitches and the FSR'
Page 69 and 70: 10. If LabVIEW program is not worki
Page 71 and 72: 13. If the male LEMO connector is n
Page 73 and 74: 16. If LabVIEW program still not wo
Page 75 and 76: Page 75
Page 77: 20. If the circuit is working fine

Biomechanics Gait Analysis Lab - Biomedical Engineering ...

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