Ultrasonic Sensor Module for a Robot

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Product Description

HG-M40/HG-L40 Series Ultrasonic Sensor Module Description

1. Module

① Transceiver(D) :
• Not only it works as Transceiver module but also it can be used as transmitter or receiver with different wire connection. Transceiver can detect from 30cm~40cm and farther since it has to transmit the ultrasonic waves and wait until it returns. However, it is possible to perceive whether objects are there or not.
② Transmitter(T) : Only transmits the ultrasonic waves.
③ Receiver(R) : Only receives the ultrasonic waves.
※ 1~2cm of close detection is available when 2 or more sets of transmitters and receivers are used.
※ In the same way, even in the case of Transceiver, when it is used as either Transmitter or Receiver independently, it can measure an obstacle as nearest as 1~2Cm.

2. Mode
① Trigger Input Mode (M-type)
② Burst Input Mode (L-type)

3. Difference between M-type and L-type.

Trigger Input Mode	Burst Input Mode
- Built in 40kHz oscillator - Always ‘Standby’ - Wave occurs one by one with external trigger pulse. - Pulse frequency is adjustable but trigger burst and  duration time(approx. 1mS) are fixed. - Strong ultrasonic wave with low click noise.	- Simple structure with only amplifier and output circuitry  (No oscillator). - External 40 kHz burst signal must be given to operate.  (external oscillator or software is needed to make signal) - Changeable pulse frequency, duration time and  radio frequency at user's convenience. - Multi channel available with CPU circuit or S/W.

HG-M40/HG-L40 Series Ultrasonic Sensor Module for a Robot Features
• Object Detector and Range Finder
• Medium Range
• Various Directivities
• Low 'Click Noise'
• Indoor Environment
• Minimum Dead Zone
• Real-Time Signal(5V TTL)
• Operates at 40kHz
• 3 types of Modules
  - Transceiver(HG-M40D)
  - Transmitter(HG-M40T)
  - Receiver(HG-M40R)

HG-M40/HG-L40 Series Ultrasonic Sensor Module for a Robot Specifications

Frequency (KHz)	40±2
Input Pulse	TTL or Pulse (2 V ~ 10 V)
Repetition Rate of Input Pulse	10 Hz ~ 30 Hz
Input DC Power (Vdc)	10 V ~ 16 V
Driving Voltage for Sensor	60~70 Vpp at 12V Vdc
Output Signal	5 V TTL
Available for a transmitter only, a receiver only or a dual type (both a transmitter and a receiver)

HG-M40/HG-L40 Series Ultrasonic Sensor Module for a Robot Product Line-Up

Type	Mode	Module	Model Name	Directivity (°)	Distance (m)
Conventional (C)	Trigger Input	Duplex Transmitter Receiver	HG-M40DC HG-M40TC HG-M40RC	65	0.4 ~ 4.5m 0 ~ 6m 0 ~ 6m
	Burst Input	Duplex Transmitter Receiver	HG-L40DC HG-L40TC HG-L40RC		0.4 ~ 6m 0 ~ 6m 0 ~ 6m
Anistropic (A)	Trigger Input	Transmitter Receiver	HG-M40TA HG-M40RA	H : 160 V : 65	0 ~ 3.5m
	Burst Input	Transmitter Receiver	HG-L40TA HG-L40RA
Broad (B)	Trigger Input	Transmitter Receiver	HG-M40TB HG-M40RB	150	0 ~ 2m
	Burst Input	Transmitter Receiver	HG-L40TB HG-L40RB
Narrow Type1 (N1)	Trigger Input	Duplex	HG-M40DN1	12	0.4 ~ 9m
	Burst Input	Duplex	HG-L40DN1
Narrow Type2 (N2)	Trigger Input	Duplex	HG-M40DN2	25	0.4 ~ 7m
	Burst Input	Duplex	HG-M40DN2