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I-Scan uses electrical current consumption to diagnose failures on electronic and electrical boards. It makes the repair process more efficient by allowing users to implement a general diagnostic profile to any board. I-Scan requires an interface to couple the board to an acquisition card and external PC for processing. This allows the user to see any failures detected based on comparing the board's current consumption patterns to expected patterns for different device types on the board.
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Man power can also be reduced. The power usage of the customer will be automatically updated in the EB station so there is no need of man power to take meter reading in the user side. After every two months the reading will be automatically resetted.
07 chapter07 loop_diagrams
Loop diagrams are schematic representations of instrumentation and control circuits used in process control systems. They show all electrical, pneumatic and physical connections for a loop including signal, power and utility connections. Key elements shown are field devices, control panels, junction boxes and terminal identification. Instrument action (direct or reverse) and energy supplies such as air, power and hydraulic are also identified. Guidelines specify that one loop should be depicted per drawing and that standard symbols are used to represent components and connections.
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I scan
- 1. Diagnoses Electric and Electrical Devices
- 2. I-Scan uses the electrical current consumption of an electric device to diagnoses several different type of failures on both Electronic and Electrical Boards (EB) .
- 3. I-Scan makes the process of repairing much more feasible and efficient with a small adaptation of a general profile the user is able to implement it to any EB.
- 4. I-Scan also requires an interface which couples the given EB to be diagnoses. The needed information is then acquired using an acquisition card and processed by an external PC. A user interface allows the user to see the failure(s) on the EB being tested.
- 5. I-Scan’s Block Diagram Power Source Sensor Load Amplifier DAQ Control Control A1 A2 A3 A4 PC A5 A6 Profile
- 6. Programming algorithm flowchart of the signal processing steps as well as the user interface. I-Scan F(range setup) F(Section setup) Digital Filtering F(Compare) F(Display) F(Open Profile) A1 A2 A3 A4 A5 A6 A7 PC
- 7. RUN Power _ON Power Supply Analysis Power Supply OK? yesno Board defective Analysis of HCD’s and MCD’s Electric Energy Pattern I--SCAN Signal Acquisition Successful Analysis? Device(s) Defective no yes Waiting Time Analysis of LCD’s Electrical Energy Pattern Successful Analysis? I--SCAN Signal Acquisition no yes Device(s) Defective Good Board Signal Acquisition time established to analyze both HCD and MCD. Signal Acquisition time established to analyze LCD. Flowchart Software
- 8. In terms of electrical energy consumption there are three type of devices on a Given Electrical Board (EB) High Consumption Devices (HCD) HCD>15% of the total EB’s Energy Consumption Medium Consumption Devices (MCD) 5%<MCD<15% of the total EB’s Energy Consumption Low Consumption Devices (LCD) LCD<5% of the total EB’s Energy Consumption - A HCD, MCD, or LCD will be diagnosed as a Defective Device if its Energy consumption is 5% of its EEP - A HCD, MCD, or LCD will be diagnosed as a Good Device if its Energy consumption is 1% of its EEP - A given Device’s Electrical Energy Pattern (EEP) will be the range of consumption levels that the device will have to fall into; in order to be in a good working condition.