E703.15 Single Chip Ultrasonic Water Meter Solution

With the stepped water price, the policy of one household and one meter, and the promotion of the smart city construction of the Internet of Things, the requirements of water supply enterprises for water supply management are getting higher and higher, and the process of replacing traditional mechanical water meters with smart water meters will accelerate. Compared with mechanical water meters, ultrasonic water meters, which are the development direction of new technologies, have the advantages of high precision, wide range ratio, no moving parts, simple mechanical structure, etc. With the further promotion of major water meter manufacturers, ultrasonic water meters will usher in a fast development of.

This article mainly introduces the ultrasonic water meter scheme based on the integrated chip E703.15. Based on this chip, Zhou Ligong has developed a complete ultrasonic water meter solution that can quickly support the entire process from evaluation to mass production.

Highly integrated ultrasonic chip E703.15 Introduction:

E703.15 is a hybrid mode low-power ultrasonic flowmeter special chip introduced by ELMOS of Germany. It contains analog part and digital part. It integrates MCU, ultrasonic time interface part, temperature interface part and power management. It can be used in the fields of ultrasonic water meters, heat meters and gas meters. The single-chip solution simplifies the peripheral circuitry by simply connecting the power supply, clock and ultrasonic transducers.

Parameter characteristics:

Internally integrated 16-bit MCU with 32kB Flash and 5kB RAM;

Rich peripheral interfaces, UART, SPI, I 2C and PWM;

Internal voltage regulator for direct battery operation;

2-channel ultrasonic, 5-channel temperature ADC;

38ps ultrasonic measurement accuracy;

64-bit floating-point unit, internal curing ultrasound software library;

-40~+85°C operating temperature range;?

The whole system is less than 30μ A average operating current;

Scheme block diagram:

E703.15 Single-chip built-in MCU and rich peripheral interface, can carry out ultrasonic measurement and temperature measurement, data is transmitted internally by chip, high efficiency, high reliability, and simplified software and hardware design, suitable for ultrasonic water meter, ultrasonic heat meter and Ultrasonic gas meters, etc.

Evaluate the DEMO board:

Zhou Ligong can provide a one-stop solution for evaluating DEMO boards and including ultrasonic water pipes and PC software.

Demo board hardware interface:

USB to serial port;

Ultrasonic peripheral interface;

Temperature peripheral interface;

Infrared communication interface;

LCD segment LCD;

M-BUS interface;

The Chinese version of the PC software provides various parameter observation and modification functions to facilitate and speed up the development process. The software can observe the ultrasonic water meter to run various data (flow, flow rate, ultrasonic time, etc.);

Ultrasonic time curve display;

Flow rate curve display;

The total flow curve is displayed;

Calibration curve, etc.

to sum up:

The ultrasonic water meter solution based on the E703.15 high integration chip has high precision and stability, and the user does not need to add an MCU, which makes the peripheral circuit design simpler. In addition, Zhou Ligong can provide schematics, PCB reference, DEMO board, software routines, host computer debugging software, mass production tools and other services, which can help water meter enterprises quickly from evaluation to mass production.

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