Difference between revisions of "Component: Ultrasonic (EBM019) (EBM Modules)"
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Revision as of 11:49, 3 February 2023
| Author | Matrix TSL |
| Version | 1.0 |
| Category | EBM Modules |
Contents
Ultrasonic component
This board has both an ultrasonic transmitter and receiver. The transmitter is driven by an on-board 40KHz oscillator which is enabled by the host microprocessor. The receiving sensor signal is amplified and provided as an analogue signal to be processed by a single channel ADC of the microprocessor. By measuring the time delay between enabling a transmit pulse and receiving an echo the distance of objects in a range of around 3cm to 3m can be determined.
Component Source Code
Please click here to download the component source project: FC_Comp_Source_EBM019v1.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_EBM019v1.fcfx
Detailed description
No detailed description exists yet for this component
Examples
Sample program using the EBM019 - Ultrasonic sensor.
Sends out a pulse and determines distance from time taken to receive reflection.
Macro reference
GetDistance
|
GetDistance |
| Sends a pulse and processes the echo. Returns a object distance in cm | |
 - UINT
|
Return |
SetDelayTime
|
|
SetDelayTime |
| Set the delay time before sampling for the echo, in microseconds | |
| - UINT
|
delay |
| delay time in microseconds | |
 - VOID
|
Return |
SetDetectionValue
|
|
SetDetectionValue |
| Set the delta value for echo detection | |
 - BYTE
|
value |
| trigger point for echo detection | |
| - VOID
|
Return |
SetPulseWidth
|
|
SetPulseWidth |
| Set the output pulse width, in microsecond (0-255uS) | |
| - BYTE
|
pulse |
| width of pulse in microseconds | |
| - VOID
|
Return |
Initialise
|
|
Initialise |
| Setup the device. This sets the control output to logic 0 | |
| - VOID
|
Return |
Property reference
|
Properties |
|
Output Pulse Pin |
| Pin used for controlling the output pulse | |
|
Echo ADC channel |
| ADC channel used to monitor the echo | |
|
Pulse Width (uS) |
| Output ultrasonic pulse width in microseconds | |
|
|
Read Delay (uS) |
| Time delay in microseconds before sampling for echo | |
|
|
Pulse Detection Value |
| Detection ADC delta trigger value A lower value is more sensitive | |
