Accessible Infusion Pump User-Interface - Biomedical Engineering ...

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The specifications show that the module only requires 5 Volts DC for powerwhich will be supplied by the batteries, can pre-load 30 different phrases,doesn’t pull much current when in standby or talking phases, and can speakphrases of up to 81 characters when they’re input word by word.Table 2.2.2.7.2 Pin descriptions for pins that run parallel to the Winbond logo+5V - 5V Power Supply - up to 100mASDA -IC2 bus SDA connectionSCL -I2C bus SCL connectionNo Connect - Do not connect this pinGND -The 0 volt Ground lineSpare - Undefined pin - do not connectGND -The 0 volt Ground lineRS232 Rx - Connect to Tx on the PCRS232 Tx - Connect to Rx on the PCThese pins will be used in coordination with our microprocessor to supply therelevant information from our LCD for the overall voice output. When using theserial communications only three different pins will be used.2.2.2.8 Circuit ElementsThe physical link between the infusion pump and the interface will ideally bedone via a serial bus. Signals must be received from and sent to the infusionpump in a way that they are discernable by both devices. Figure 2.2.2.8.1 is abasic circuit element schematic. A more complex schematic cannot begenerated until the exact output signals from the various sensors in the infusionpump are known. This is not yet possible due to the lack of a deconstructableinfusion pump. Essentially input signals will be generated by input buttons andwill be relative to what is on the display. This data will be processed by amicroprocessor into signals which the infusion pump can comprehend. Thesignals will then be transmitted via a serial bus to the infusion pump itself wherethey will result in action being taken, such as a flow rate being set or infusionbeginning. The system must also work in reverse. Warnings and statusinformation from the infusion pump must be transmitted along the serial bus anddisplayed visually and audibly.45
Figure 2.2.2.8.1: Basic Circuit DesignOne disadvantage to the use of a microprocessor is that any graphics interfacemust be generated from scratch in assembly code. This can prove to be tediousand unnecessary given the many operating systems available with graphicsinterfaces already present. As an alternative, the Blackfin microprocessing chipallows a LabVIEW program to be embedded in a chip. This dramatically cutsdown the development time, yet still allows the use of a microprocessor tocoordinate all subassemblies in the device.Figure 2.2.2.8.2: Subassembly connection circuit46
Page 11 and 12: e connected to the microprocessor r
Page 13 and 14: acket will be mounted directly to t
Page 15 and 16: Circuit ElementsThe physical link b
Page 17 and 18: Top Level MenuSetting infusionrates
Page 19 and 20: misdosages is reduced by forcing th
Page 21 and 22: Figure 2.1.2.7: Graphic User Interf
Page 23 and 24: Figure 2.1.3.2: Engineering drawing
Page 25 and 26: Figure 2.1.3.4: Labview-base Blackf
Page 27 and 28: Figure 2.2.1.1: Basic Circuit Desig
Page 29 and 30: Figure 2.2.2.1.2: LCD DimensionsTab
Page 31 and 32: Figure 2.2.2.2.2: Engineering drawi
Page 33 and 34: Figure 2.2.2.4.1: Rechargeable Lead
Page 35 and 36: It is important that operation of t
Page 37 and 38: Specifications (Note: dimensions in
Page 39 and 40: Figure 2.2.2.6.2: Bracket top view
Page 41 and 42: On the casing that will contain the
Page 43 and 44: Figure 2.2.2.6.9: Casing mounting b
Page 45: death. This makes the auditory outp
Page 49 and 50: Figure 2.2.2.9.1: Display Screen Fl
Page 51 and 52: Audio Output: “Infusion Rate Inpu
Page 53 and 54: Audio Output: “Flow rate is” Ou
Page 55 and 56: Audio Output: “To start infusion,
Page 57 and 58: Audio Output: “Infusion Rate Inpu
Page 59 and 60: Audio Output: “Flow rate is” Ou
Page 61 and 62: Audio Output: “Infusion starting
Page 63 and 64: Figure 2.2.2.10.2: Labview-base Bla
Page 65 and 66: Figure 2.2.2.11.2: ABS Weld-On glue
Page 67 and 68: Figure 2.2.2.11.6: User Interface U
Page 69 and 70: Figure 2.2.2.12.1: Pump head assemb
Page 71 and 72: 2.2.2.13 Anaheim Automation PCL601
Page 73 and 74: Table 2.2.2.13.1: Specifications fo
Page 75 and 76: Figure 2.2.2.14.2 TM4500 dimensions
Page 77 and 78: The interface must also be evaluate
Page 79 and 80: Figure 2.3.3: Opening the Pumping U
Page 81 and 82: Figure 2.3.5: Back Panel Dismounted
Page 83 and 84: Figure 2.3.8: Connecting the Power
Page 85 and 86: The metal arm connecting the two mo
Page 87 and 88: Figure 2.3.13: Two of the Six Bolts
Page 89 and 90: LCD DisplayButtonJoystickFigure 2.3
Page 91 and 92: Figure 2.3.18: Charger and Female C
Page 93 and 94: BatteryFigure 2.3.21: BatteryFigure
Page 95 and 96: Figure 2.3.24: Pumping Unit Connect
Page 97 and 98:
Figure2.3.26: DriverTesting of the
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"strand” the user.• Give users
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surfaces and electric static discha
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through all necessary steps before
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Adding new components has brought w
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The next step was creating the all
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With the integration of a colored L
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http://www.metalsdepot.com/products
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12 Appendix12.1 Updated Specificati
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