Wheel Speed Sensor

The Wheel Speed Sensor is an FPGA-based wheel speed sensor simulator card by Concurrent. This PCIe card provides functionalities such as:

Generation of Wheel Speed Sensor Signal

Arbitrary Pulse Pattern Configuration with less than 0.006° resolution.
4 channel output with individually programable pulse patterns.
Pulse pattern with upto 100 teeth

I/O Card Model Number

CP-PWM-1204

I/O Driver Model Number

No driver needed

I/O Module License

ICS-SWB-1281

Breakout Board Assembly Number

CX-LFH60-OUT

Typical Wheel Speed Sensor Waveform

Pinout

Pin	Pin Name	Function	Pin	Pin Name	Function	Pin	Pin Name	Function	Pin	Pin Name	Function
1	NC	-	16	NC	-	31	GND	GND	46	NC	-
2	NC	-	17	NC	-	32	GND	GND	47	NC	-
3	NC	-	18	NC	-	33	GND	GND	48	NC	-
4	NC	-	19	NC	-	34	GND	GND	49	NC	-
5	NC	-	20	NC	-	35	GND	GND	50	NC	-
6	NC	-	21	NC	-	36	GND	GND	51	NC	-
7	NC	-	22	NC	-	37	GND	GND	52	NC	-
8	NC	-	23	NC	-	38	GND	GND	53	OUT7	Rollover 4
9	NC	-	24	NC	-	39	NC	-	54	OUT6	Rollover 3
10	NC	-	25	NC	-	40	NC	-	55	OUT5	Rollover 2
11	NC	-	26	NC	-	41	NC	-	56	OUT4	Rollover 1
12	NC	-	27	NC	-	42	NC	-	57	OUT3	Wheel 4
13	NC	-	28	NC	-	43	NC	-	58	OUT2	Wheel 3
14	NC	-	29	NC	-	44	NC	-	59	OUT1	Wheel 2
15	NC	-	30	NC	-	45	NC	-	60	OUT0	Wheel 1

NC - No connection

Beakout Board Setup

Breakout Board Pinout

P2 OUTPUT

Pin	Pin Name
1	OUT1
2	GND
3	OUT2
4	GND
5	OUT3
6	GND
7	OUT4
8	GND
9	OUT5
10	GND
11	OUT6
12	GND
13	OUT7
14	GND
15	OUT8
16	GND


Wheel Configuration Specify wheel configuration, on a per-wheel basis. Select Wheel: Wheel number, specified as an integer in the [1 4] range. Number of Teeth: Number of teeth in wheel, specified as an integer in the [4 60] range. Tips: Use the and buttons to customize the wheel teeth. However, note that using these buttons results in values of the Number of Teeth and Default Tooth Size fields being inapplicable. You can also specify custom values for each tooth transition by double-clicking the table entry and entering the desired value. Press enter. Right-click on the table to invoke a menu to set the starting point of the tooth profile. Default Tooth Size: Angular width of each tooth, specified in the (0,360/num_crank_teeth)° range. Polarity: Output signal polarity, specified as "Active High" or "Active Low". The signal will be inverted when its active low. Copy to all 4 wheels: Copies wheel 1 tooth profile to all the wheels.

I/O Mapping: For each wheel, you can map the RPM to an analog output RTDB variable. RPM range is +10000 to -10000 with a resolution of 0.01 RPM. Negative RPM indicates the wheel is moving in the reverse direction.

Output Signals: The tooth wheel profiles are output on channels OUT1 to OUT4 on the breakout board. Every 360 degree rotation a rollover pulse is output for each wheel on channels OUT5 to OUT 8. Typical waveforms are shown below