CN201083513Y - Deep water level high precision sensor device - Google Patents

Abstract

A high-precision sensor device for deep water level belongs to the technical field of sensors for liquid level measurement. The utility model utilizes two water pressure sensors with good consistency, and fixes them on the determined height difference under the water area to be monitored. And ensure that the other side of the measuring surface of the two sensors is consistent with the atmospheric pressure, that is, the other side is communicated with the air on the water surface through the pipeline, thereby forming a measuring device that is not affected by the atmospheric pressure. A low-cost water level measurement system can be formed by using this device, and a set of very accurate and efficient automatic measurement system can be formed by cooperating with current embedded computer technology, computer network or GPRS network technology, so as to realize real-time monitoring and water regime monitoring of the whole river basin. Report. So as to provide basic measurement means and support for automatic monitoring of water regime.

Description

Deep water level high precision sensor device

technical field

The utility model relates to a high-precision sensor device for deep water level measurement.

Background technique

At present, the most important water level measurement in the hydrological measurement of rivers, rivers, lakes and reservoirs, the measurement error of the water conservancy department is required to reach ±1cm. The main theoretical basis for measuring the water level is P=ρgh. From the formula P=ρgh, it can be known that the static pressure of water is related to the density of water, the acceleration of gravity, and the height of the water level. Changes, such as changes in temperature, density, purity, location, etc., will cause changes in ρ and g. Due to the unpredictability of this change, it is difficult to meet the measurement error requirements of the water conservancy department with this method. In order to ensure the accuracy of measurement, manual observation is generally used, which greatly affects the efficiency of water regime monitoring and the development of water regime informatization. Although there are many related automated measurement solutions, none of them can guarantee the measurement results in the case of deep water level and large-scale fluctuation of water level.

Contents of the invention

The purpose of the utility model is to provide a sensor device that can overcome the problems of atmospheric pressure interference and liquid density fluctuation, etc., and provide a sensor device for high-precision deep liquid level measurement.

The purpose of this utility model is achieved in this way: a deep water level high-precision sensor device, including a sensor 1 and a sensor 2, one end of the sensor 1 and the sensor 2 is in direct contact with the water pressure, and the other end is connected to the air pipe 4 integrated with the cable 3 The atmosphere is connected, and a certain height difference is maintained between sensor 1 and sensor 2. Sensor 1 and sensor 2 adopt basically the same parameter characteristics.

The deep water level high-precision sensor device provided by the utility model uses two water pressure sensors with good consistency, and fixes them on the determined height difference under the water area to be monitored. And ensure that the other side of the measuring surface of the two sensors is consistent with the atmospheric pressure, that is, the other side is communicated with the air on the water surface through the pipeline, thereby forming a measuring device that is not affected by the atmospheric pressure. A low-cost water level measurement system can be formed by using this device, and a set of very accurate and efficient automatic measurement system can be formed by cooperating with current embedded computer technology, computer network or GPRS network technology, so as to realize real-time monitoring and water regime monitoring of the whole river basin. Report. So as to provide basic measurement means and support for automatic monitoring of water regime.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model adopts the following structure: a deep water level high-precision sensor device, including a sensor 1 and a sensor 2, one end of the sensor 1 and the sensor 2 is in direct contact with the water pressure, and the other end communicates with the atmosphere through the air pipe 4 integrated with the cable 3, A certain height difference is maintained between sensor 1 and sensor 2. Sensor 1 and sensor 2 adopt basically the same parameter characteristics.

The principle of the utility model is: the sensor 1 and the sensor 2 have good consistency, they are fixed on the height difference H determined under the water area to be monitored, and ensure that the other side of the measuring surface of the two sensors is consistent with the atmospheric pressure. Keep consistent, that is, the other side is communicated with the air on the water surface through the pipeline 4, thereby constituting a measuring device that is not affected by atmospheric pressure. The water surface height can be calculated by obtaining the measurement data of the two sensors and the difference between their relative positions. And because the two sensors are in the same environment, they are basically affected by the same external factors. When the parameter characteristics of the two sensors are basically the same, the difference can be used to reduce the error caused by the external factors. When combined with related measurement schemes, multiple measurement results can be obtained with higher accuracy than measuring water pressure alone. The data obtained by the sensor is transmitted to the embedded computer, computer network or GPRS network through the cable 3, and a set of very accurate and efficient automatic measurement system can be formed to realize real-time monitoring and water situation reporting of the whole river basin. So as to provide basic measurement means and support for automatic monitoring of water regime.

Claims (2)

1. A deep-water level high-precision sensor device, including a sensor (1) and a sensor (2), is characterized in that: one end of the sensor (1) and the sensor (2) is in direct contact with the water pressure, and the other end is integrated with the cable (3) The air duct (4) communicates with the atmosphere, and a certain height difference is maintained between the sensor (1) and the sensor (2). 2. The deep-water level high-precision sensor device according to claim 1, characterized in that: the sensor (1) and the sensor (2) adopt parameter characteristics that are basically the same.

Images