VegeSense®mVMR1108 Smart Meter Reading Module

Description

1.1Typical Application

• Meter (water/gas/electricity etc.) reading
• Digital transformation of traditional instruments
• Object presence detection
• Posture Detection
• Optical Character Recognition Smart Pen and Smart Light
• QR code reading

1.2Meter Reader High Level Design

The mVMR1108 makes it easy to develop a variety of meter reader products. The following diagram shows the main components that make up a meter reader.

1.3Example of a gauge

 

 

 

 

 

 

 

Example of water representation

Example of numeric representation Example of pointer representation

1.4Product Specification

1.4.1Technical Specification

Diagnostic Property	Details	Remark
PCB Size	45(W) x 30(H) x 6.8(T) mm	T-shaped
Camera Size	9(W) x 12(H) x 5.6(T) mm
Operating Voltage	2.8 to 3.6 V
Operating Temperature	-20 to 50°C
Operating Humidity	0 to 95% RH	non-condensing
Optical Range	visible light	mVMR will automatically flash when taking photos
LED	2 x SMD0805 LEDs	Infrared or white light, < 20mA
Communication Interface*	TTL/UART, Compatible with AT commands	Default 115200/8/N/1

 

*TTL/UART serial port can be directly connected to the microcontroller, if you need to connect to the computer (USB or serial port), please use the appropriate adapter according to the actual physical interface (eg: ‘USB to TTL’ or ‘TTL to RS232″)

 

1.4.2Wiring Definitions

No.	Pinout	Desc.
1	RX	TTL RX
2	TX	TTL TX
3	3.3V	DC3.3V Input
4	GND	地

Note: Pin spacing is 2.0mm with a 90° pin connector unless otherwise noted.

1.4.3Current Consumption

The current consumption in different operating modes is shown in the table below.

Operating Mode	Mini. Value	Typical Value	Max. Value	Unit
Hibernation	13	27	35	uA
Initialisation and readiness		16		mA
Meter reading	19	52	65	mA
Executing other AT commands		20		mA