Today, I will introduce a national invention authorized patent-a temperature-measuring ultrasonic water meter based on LoRa communication. The patent was applied for by Jining Wukexing Meter Co., Ltd., and the authorization was announced on August 10, 2018.
Content descriptionThe product involved in the utility model belongs to fluid metering equipment, in particular a temperature measuring ultrasonic water meter based on LoRa communication.
Background of the inventionThe ultrasonic water meter is a new type of water meter that detects the time difference caused by the speed change when the ultrasonic sound beam propagates in the water upstream and downstream, analyzes and processes the water velocity, and further accumulates the water flow rate. Compared with mechanical water meters, it has the characteristics of high accuracy, good reliability, wide range ratio, long service life, no moving parts, no need to set parameters, and installation at any angle.
At present, similar products have complex ultrasonic reflection structure, large pressure loss, and low precision; the water meter does not operate or display in low temperature environment, and there is no temperature compensation link, which results in different measurement accuracy under different temperature environments, resulting in measurement deviation.
The existing ultrasonic water meters mostly use wired communication, or the existing wireless communication function, but the communication quality is poor and the data packet loss is serious.
Summary of the inventionIn order to solve the shortcomings of the prior art, the present utility model proposes a temperature measuring ultrasonic water meter based on LoRa communication.
![[New patent introduction] Temperature measurement ultrasonic water meter based on LoRa communication](http://i.bosscdn.com/blog/o4/YB/AF/t03ViAQVxrAABvSOJHgTY184.png)
The utility model adopts the following technical scheme: a temperature measuring ultrasonic water meter based on LoRa communication, including a base meter, a temperature measuring device, and a LoRa module. The left and right ends of the base meter are provided with flanges for connecting with the pipeline, and the base surface is equipped with The temperature measuring hole is installed in the temperature measuring device. The temperature measuring device is installed in the temperature measuring hole. There are transducer channels on the front and rear sides of the base meter. The transducer channels are embedded with transducers and transducers. The transmission and collection of ultrasonic waves between the two are through the beam type, the base watch and the watch case are fixed by the watch case base watch connection device, and the circuit board is fixed inside the watch case.
The temperature measuring device is connected to the circuit board, and the temperature measuring device detects the temperature of the water flowing through the base meter in real time and transmits it to the circuit board.
The LoRa module is fixed on the circuit board through pins, and the LoRa module includes a LoRa module antenna and a LoRa module circuit board.
Further, an infrared communication indicating device and a display screen are welded on the upper part of the circuit board through pins, and the infrared communication indicating device and the display screen are connected to the circuit board. The transducer is sealed in the transducer channel through an O-ring. A battery is fixed inside the watch case, and the battery is connected to the circuit board. The upper part of the watch case is provided with an upper cover, and a sealing ring for waterproof and dust intrusion is sandwiched between the upper cover and the watch case. The LoRa module antenna is a spirally processed antenna.
The beneficial technical effects obtained by adopting the above technical scheme are: the transducer in the pipeline adopts an embedded design, the device is embedded in the inner wall of the pipeline without other combined parts, and the pressure loss is reduced; the ultrasonic transmission and collection of the transducer adopts the opposite beam, reducing The small signal attenuation enhances the accuracy and stability of measurement. The base meter part has a separate hole to connect to the temperature measuring device, the temperature signal is transmitted to the circuit board in real time and displayed on the display screen in real time, and the temperature compensation link is added during the measurement to improve the measurement accuracy. The hardware circuit and liquid crystal display on the circuit board adopt industrial-grade components, which can be continuously operated in an environment as low as minus 25°C. The hardware circuit is connected to the LoRa wireless transmission module, which can wirelessly transmit various parameters to the upper-level management equipment.
The utility model reduces the pressure loss in the pipeline, improves the energy utilization rate; improves the measurement accuracy and stability; has good adaptability to the environment and can increase the service life of the product.
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Yuheng Optics Co., Ltd.(Changchun) , https://www.yhenoptics.com