1200 BPS HART MODEM
Smart Embedded Systems (SES), Inc., Silicon Valley Company, is offering 1200 bps modem capability using System on a Chip (SoC) and SES is the first company for having developed a very compelling and cost effective Patented Soft Modem technology (strictly firmware based) solution for Industrial Automation applications. Our modem design enables compliance with HART “FSK Physical Layer Specifications”. We support the Industry standard HART Communication Protocol (HART Stack 7.0).
OUR SOLUTION:
System on a chip (SoC) Based 1200 BPS (FSK)MODEM:
Our 1200 BPS modem is firmware based; implemented with Texas Instruments (TI) MS430 microcontroller. Besides modem functionality, we also offer the following on the same microcontroller:
HART Soft Modem
Benefits- Lower cost
- Lower power 400 uA FSK mode at VCC of 2.7V
- Works with any third party HART stack
- Low power table lookup based modulator using SES patented methods
- Smart Phase and Timing detection of incoming signals using SES patented methods
- High reliability
- Smaller footprint
System on a Chip (SOC) Based Solution
- Uses off-the-shelf microcontroller
- Uses Low voltage FRAM based microcontroller for low power
- SES HART 7.0 Stack can run on the same microcontroller
- Sensor Interface
HART FSK Modem Characteristics
Benefits- Binary Frequency Shift Keying
- Bits per symbol : 1
- Mark = 1200Hz; Space = 2200Hz ±1%
- Carrier Frequency : 1700Hz.
- Data Rate : 1200 Bits Per Second ±1%
- Supports Normal Analog Wiring
Modulator Characteristics
- Carrier Startup : Less than 3 symbols
- Carrier Stop : Less than 3 symbols
Demodulator Characteristics
- Dynamic Range : 15 dB minimum
- (150mV – 900mV)
- Receive Filtering for Analog signal Interference rejection: 20 dB minimum
- RX Signal CD On : 80mV - 120mV
- CD On time : 1ms - 4ms
- CD off time : 5ms - 10ms
- Rx Signal Level : 120mV - 1000mV
- A. Process control and factory automation
- B. Temperature sensors
- C. Flow transmitters
- D. Level transmitters
- E. Pressure transmitters
Board Support Package for Evaluation includes:
- A. Board
- B. Schematic
- C. BOM (Bill Of Materials)
- D. HART Stack Binary code
- E. SOFT Modem Binary code
SES has been awarded four patents related to its soft modem technology for HART devices: 9106488, 9184965, 9203665, 9281978 and additional patents pending.
SES has been awarded four patents related to its soft modem technology for HART devices: 9106488, 9184965, 9203665, 9281978 and additional patents pending.