水资源 / 洪水预警

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坎贝尔科学公司设计和建造标准ALERT、ALERT2、混合ALERT以及定制的洪水预警系统。这些系统包括全套的发射器,和额外的ALERT类型的罐形仪器机箱,用于标准管式安装。数据采集器是我们的系统的核心部件,数十年来已经在恶劣及偏远的环境中广泛验证。可以将我们的系统添加到已有的预警网络,或者我们也能为您的独特应用定制一个系统。 了解更多

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ALERT System

Our ALERT systems match all standard ALERT protocols, including ALERT2. Our data loggers, proven in thousands of applications worldwide, provide multiple types of inputs (pulse, analog, SDI-12, and others), which allow you to use almost any type of water-level sensor (including pressure transducers, shaft encoders, bubblers, and ultrasonic distance sensors). The onboard algorithms are able to calculate hourly and daily minimums, maximums, averages, totals, flow, or any other statistical value. These values can be stored onboard the system, providing you with a backup of the data. A solar panel provides continuous charge to the battery for your extended, unattended monitoring needs.

If you need additional sensors to measure soil moisture, water quality, or meteorological conditions, it is easy to integrate them. We can upgrade older systems—even those from other manufacturers—with the latest data logger and transmitter, often allowing you to use the same sensors and standpipe or enclosure.

ALERT2 Systems

The added performance of ALERT2 systems makes them a logical choice for new systems and for upgrading existing networks. The main advantage is the ability to have larger networks and greatly reduced data loss. When you upgrade an older ALERT network to ALERT2, you don't have to update the complete system all at once. Rather, you can complete the upgrade in phases to ease the cost and labor burdens. All the other functions and features of the original ALERT systems are still available with ALERT2.

Campbell Scientific equipment has been used for some of the largest and most widely used ALERT2 networks in the country. For an example of the performance of these systems, read the "Texas: Transitioning to ALERT2" case study.

Note: ALERT2 is a trademark of the National Hydrologic Warning Council.

Hybrid ALERT Systems

Our hybrid systems consist of an ALERT system integrated with additional sensors and communications peripherals. One or two radio frequencies can be used, depending on your needs. With a single frequency, two-way communications are avoided during storm events to allow more bandwidth for one-way ALERT communications. You may, however, choose to use two frequencies: one for ALERT and the other for a fully functional, two-way communications network. This provides the following inherent advantages:

  • Retries of missed packets
  • Diagnostics
  • Clock synchronization
  • Re-programming from the base station
  • Historical data collection (no holes in the data)
  • Interactive control capability
  • Voice modem call-out of alarms

If you are able to measure additional parameters at your ALERT site, or to integrate ALERT capabilities with another type of measurement site, it may be easier for you to collaborate with another organization. Collaboration may help keep your costs down.

Customized Flood Warning Network Using LoggerNet Software

A flood warning network that uses LoggerNet software takes advantage of two-way RF communications and the latest in network management software. LoggerNet is a client/server software program used for managing large networks of monitoring stations. A LoggerNet-based system is a viable solution for flood warning applications for two reasons:

  1. The speed at which LoggerNet can poll multiple RF stations
  2. The speed and versatility with which LoggerNet can make the data available to multiple interested parties 

When a "send data" command is broadcast to a group of remote stations, the stations transmit predefined data to the LoggerNet server in their own time window. Transmission windows can be as short as 100 ms, allowing multiple sites to be polled per second. As the data is collected, LoggerNet clients access it from LANs or via the Internet, making the data available to multiple users or agencies in near real time.

Other Resources and Options

To meet your application's specific needs, you can combine other resources and communications options with flood warning systems. It is common for local governments to combine resources to obtain the best possible system. In other situations, federal agencies are involved, which increases system coverage and robustness, and even helps with the budget. For example, GOES satellite transmitters can be added to stations to provide automated data archival through the National Weather Service (NOAA/NESDIS) and the U.S. Geological Survey (USGS). Multiple-purpose data-collection systems bring to bear the resources and expertise of environmental data experts.

案例研究

德克萨斯: 哈维飓风监测
In February of 2015, Campbell Scientific was awarded a bid to supply the Harris County......阅读更多
阿肯色州:洪水预警
Hot Springs, Arkansas, is a history-rich city located adjacent to Hot Springs National Park. The......阅读更多
北卡罗莱纳: 警报站升级
The Charlotte-Mecklenburg Flood Information and Notification System (FINS) consists of over 125 gaging stations spread......阅读更多
华盛顿: 警报站改造
The National Weather Service (NWS) operates a network of automated flood-warning stations around Mount St.......阅读更多
科罗拉多州: 道路天气警报系统
Networks using the ALERT protocol are designed to give immediate access to data that indicates......阅读更多
新西兰: 火山泥流监测
All of our years of effort have paid off. Wehave collected a world-class data set......阅读更多
肯塔基: 沃尔夫大坝修复
The Wolf Creek Dam near Jamestown, Kentucky, was constructed partially as a regular concrete hydroelectric......阅读更多
维吉尼亚州: 气象预警系统
In the late 1970s, the National Weather Service implemented the Integrated Flood Observing and Warning......阅读更多

常见问题解答

洪水预警: 1

  1. Most Campbell Scientific systems are built from individual components. This provides maximum flexibility for our customers, but it does not lend itself to pricing a "typical" system. Contact Campbell Scientific for assistance in pricing a system to meet the unique needs of the application.


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