Characteristics and Price Analysis of Aotai Automation Wireless Time Difference Ultrasonic Section Flow Meter

1、 Characteristics of FLOW METERs

（1） Time synchronization and measurement accuracy guarantee

1. Adopting Beidou satellite multi-mode timing technology to achieve high-precision synchronous timing between master and slave devices. This provides a solid foundation for accurately measuring the time difference of ultrasonic propagation, improves the accuracy of flow measurement, and has significant advantages compared to traditional methods, effectively reducing the impact of time measurement errors on flow calculation.

2. Equipped with specially customized high-sensitivity and high gain matrix acoustic underwater transducers, capable of receiving and transmitting ultrasonic signals, significantly improving signal quality, creating favorable conditions for accurate measurement, and further enhancing the accuracy and reliability of flow measurement.

（2） Data processing and transmission efficiency

1. By utilizing unique self-organizing broadband data link technology, audio signals and other types of data detected by the master and slave machines can be quickly transmitted. This ensures the real-time and accurate measurement data, enables timely updates of relevant equipment information, and guarantees the stability of data transmission.

2. Both master and slave computers have edge computing function, which can independently process data and interact with each other. This design significantly reduces the risk of data transmission delay and loss, improves the efficiency of data processing, accelerates the display speed of measurement results, and enables the device to respond more quickly to measurement changes, providing accurate measurement results in a timely manner.

（3） Display and monitoring functions

Both the master and slave machines are equipped with real-time color screen display. Not only can it present measurement results in real time, but it can also clearly display various data and audio waveforms, making it convenient for users to intuitively grasp the measurement status and data details, enhancing on-site monitoring capabilities, providing users with intuitive display of measurement information, and facilitating users to timely understand the equipment operation status and dynamic changes in measurement data.

（4） Host Integration and Function Expansion

1. The host comes with a terrain data input function, which can be directly converted into a flow signal based on the measured water level signal. No need to rely on other external devices for complex conversion processes, significantly simplifying the measurement process, improving work efficiency, and reducing errors and complexity that may arise from multi device collaborative work.

2. Relying on multiple patented technologies and software copyright programs, the product has uniqueness in terms of technological innovation. Its performance and quality are strongly guaranteed by technical patents, demonstrating the professionalism of the product and providing reliable technical support and guarantee for users.

（5） Connection and power supply mode

1. The host and slave are connected wirelessly, freeing them from the constraints of cables. This makes the installation of the equipment flexible, especially suitable for environments with wide rivers and complex terrain on both sides where wiring is difficult, reducing installation difficulty and cost, and improving the adaptability and deployability of the equipment.

2. It has a complete heavy-duty structure installation bracket for master-slave machines, which is sturdy and durable, and can adapt to various complex outdoor environments, effectively ensuring the stability and reliability of the equipment. At the same time, equipped with a complete solar power supply system, it can provide stable power supply, providing reliable energy support for the continuous and stable operation of equipment in remote areas or places where power lines are inconvenient to lay, ensuring the normal operation of equipment in different environments.

（6） Multi sensor collaboration and algorithm optimization

In addition to the time difference ultrasonic sensor, it is also equipped with a water level sensor, conductivity sensor, and water temperature sensor for sound speed correction. Multiple sensors working together can more accurately consider the factors affecting sound velocity, thereby improving the accuracy and reliability of flow measurement.

2. Matching special driving circuits and unique algorithms enables the device to measure data on wider river channels. For example, using pulse group recognition technology, it is suitable for calculating the time difference of sound waves at longer distances, further optimizing the measurement performance and improving the adaptability and measurement effect of the equipment in different scenarios.

（7） Wireless communication function

The built-in wireless 4G communication module can seamlessly upload measurement results to the hydrological service platform. Ensuring the stability of communication and the security of data transmission, remote transmission and real-time sharing of data have been achieved, providing convenience for hydrological monitoring and data analysis.

2、 Difference from traditional time difference flowmeter

（1） Differences in measurement ability

The Aotai wireless time difference ultrasonic section flowmeter can measure zero flow, low flow, and negative flow, while the traditional wired ultrasonic time difference flowmeter may have relatively limited measurement capabilities for these special flow rates, making it difficult to meet the measurement needs under complex water flow conditions.

（2） Different measurement ranges

1. In terms of flow velocity measurement, the Australian Thai flowmeter has a flow velocity measurement range of -5~10.000m/s, which may have a wider measurement range compared to traditional flowmeters and can adapt to a wider range of flow velocity changes.

2. In terms of water level measurement, the Aotai flowmeter comes with a water level sensor with a measurement range of 0-30m, which can provide more accurate data support for water level monitoring and differs from the water level measurement capability of traditional flowmeters.

3. In terms of applicable river channel width, the Aotai flowmeter is suitable for river channel widths ranging from 20 to 300m, significantly exceeding traditional time-of-flight flow meters and demonstrating its stronger adaptability in different river environments.

（3） Differences in equipment configuration

1. Transducers: The Aotai flowmeter adopts two sets of matrix high-sensitivity and high-power transducers. Compared with the traditional ordinary underwater acoustic transducers used in traditional wired time-of-flight flowmeters, it has higher sensitivity and power, and can better achieve signal reception and transmission.

2. Timing method: Aotai flowmeter adopts dual-mode timing synchronization of Beidou and GPS (combined with the multi-mode timing technology of Beidou satellite mentioned in the article, it can be reasonably inferred that GPS mode is included), while traditional wired time difference flowmeter does not have synchronous timing and is usually driven by a CPU at the same time, which has significant differences in time synchronization accuracy and reliability.

3. Base elevation setting: The Australian Thai flowmeter has a built-in 50 point base elevation setting, while wired time-of-flight section flowmeters usually do not have multi-point base elevation settings, which gives the Australian Thai flowmeter an advantage in terrain adaptability and measurement accuracy.

（4） Measurement and upload cycle difference

1. Upload cycle setting: The measurement cycle of Aotai flowmeter is 5 seconds, and the upload cycle can be flexibly set within 5 minutes (5 seconds~30 minutes can be set) according to actual needs, and the machine can decide independently. The upload cycle of traditional wired ultrasonic time-of-flight flow meters is usually not determined by the machine itself, and needs to be achieved through RS485 external Rtu. In terms of autonomy and flexibility in data transmission, Aotai flow meters have more advantages.

2. In terms of display and algorithm: The Aotai flowmeter master and slave machines have functions such as real-time color image display (which can reasonably be inferred to include seven inch color LCD dot matrix display function), and adopt unique algorithms such as pulse group recognition technology, which are suitable for calculating the time difference of sound waves at longer distances, improving recognition ability, measurement efficiency, and measurement reliability. The traditional wired ultrasonic time difference method flowmeter usually adopts the first wave measurement method, which has differences in display effect and algorithm performance compared to the Australian Thai flowmeter.

（5） Different ultrasonic characteristics

The ultrasonic frequency used in the Autai flowmeter is lower, with stronger penetration ability and better anti-interference ability. This enables it to work more stably in complex underwater environments and obtain more accurate measurement data, whereas traditional flow meters may be relatively weaker in this regard.

3、 Analysis of Price Influencing Factors

The price of high-precision and multifunctional flow meters like Aotai is influenced by various factors.

（1） Equipment hardware cost

The adoption of high-precision timing modules, such as hardware equipment related to the Beidou satellite multi-mode timing technology, has a relatively high cost to ensure high-precision time synchronization, which affects the overall price.

2. Configuration of high-performance sensors, including water level sensors, conductivity sensors, water temperature sensors, and high-sensitivity acoustic underwater transducers. The high quality and performance requirements of these sensors increase the cost of the equipment, which in turn affects the price.

3. Complex data processing chips and other core components need to adopt advanced chip technology in order to realize the data processing and edge computing functions of the equipment, and its cost has also raised the product price to a certain extent.

（2） R&D investment cost

The product relies on multiple patented technologies and software copyright programs, and the related expenses incurred during the research and development process need to be allocated to the product price. The increase in research and development costs leads to a corresponding increase in product prices, reflecting the value of technological innovation and R&D investment.

（3） Installation and operation costs

The labor and material costs during the installation process will have an impact on the overall price. Especially in special environments, installation may require more manpower and the use of special materials, thereby increasing installation costs.

2. The cost of on-site surveying is also one of the factors affecting the price. The complexity and accuracy requirements of on-site surveying and mapping vary, resulting in corresponding cost differences. For example, the cost of surveying complex terrain is usually high, which in turn affects the overall price of equipment.

The energy consumption, replacement of vulnerable parts, and the manpower and technical support required for maintenance during equipment operation constitute the operating and maintenance costs. High sensitivity equipment may require more specialized maintenance, and maintenance costs in remote areas may increase due to factors such as transportation and time, which will be reflected in the price.

（4） Advantages of independent research and system integration

The main components of this flow measurement system are independently developed and produced by Aotai Company. Therefore, the combination of various components in the entire system is reasonable and reliable, and the parts are well matched. This not only ensures the stability and consistency of the system's performance, but also reduces the risks and additional costs that may arise from compatibility issues with components from different manufacturers. At the same time, independent research and development and production enable Aotai to better control product quality and optimize production processes, further enhancing the overall value of the product, but also to some extent affecting the product's price positioning.

In summary, compared with traditional time difference flow meters, the wireless time difference ultrasonic section flow meter from Autai Automation has significant advantages in measurement performance, adaptability, and reliability due to its more advanced functions and technologies. However, its price may be higher. This is determined by its various cost factors and technological value. In practical applications, users need to consider and select suitable flow meter products based on their own needs and budget.