阅读说明：本技术 一种基于蠕动泵的雨量传感器在线校准系统 (On-line calibration system for rainfall sensor based on peristaltic pump ) 是由 徐炜 芮婷 严家德 张颢恬 霍达 于 2020-07-16 设计创作，主要内容包括：本发明公开了一种基于蠕动泵的雨量传感器在线校准系统,包括上位机和校准仪,所述校准仪与翻斗式雨量计连接,所述上位机与校准仪无线连接,所述校准仪包括单片机、蠕动泵和电磁阀,所述蠕动泵的一端通过进水管与储水室连接,所述蠕动泵的另一端通过出水管与翻斗式雨量计的承水器连接,所述电磁阀设于所述翻斗式雨量计和所述储水室之间,所述蠕动泵和电磁阀与所述单片机电连接。本发明实现了自动模拟并检定各类雨强,最后收集信号进行数据处理,上位机可以进行多站点信息的统一管理；并且用无线通信技术解决了远程控制问题,有效提高了检定的精度和工作效率,具有更好的户外适应性。(The invention discloses an online calibration system of a rainfall sensor based on a peristaltic pump, which comprises an upper computer and a calibrator, wherein the calibrator is connected with a tipping bucket type rainfall meter, the upper computer is wirelessly connected with the calibrator, the calibrator comprises a single chip microcomputer, a peristaltic pump and an electromagnetic valve, one end of the peristaltic pump is connected with a water storage chamber through a water inlet pipe, the other end of the peristaltic pump is connected with a water bearing device of the tipping bucket type rainfall meter through a water outlet pipe, the electromagnetic valve is arranged between the tipping bucket type rainfall meter and the water storage chamber, and the peristaltic pump and the electromagnetic valve are electrically connected with the single chip microcomputer. The invention realizes automatic simulation and detection of various rain intensities, and finally collects signals for data processing, and the upper computer can perform unified management of multi-site information; and the problem of remote control is solved by using a wireless communication technology, the verification precision and the working efficiency are effectively improved, and the outdoor adaptability is better.)

1. The utility model provides an online calibration system of rainfall sensor based on peristaltic pump, its characterized in that, includes host computer (1) and calibrator (2), calibrator (2) are connected with tipping bucket formula rain gauge (5), host computer (1) is connected through wireless communication module (13) with calibrator (2), calibrator (2) include singlechip (4), peristaltic pump (10) and solenoid valve (12), the one end of peristaltic pump (10) is passed through the inlet tube and is connected with reservoir chamber (8), the other end of peristaltic pump (10) passes through the outlet pipe and is connected with the water-holding ware of tipping bucket formula rain gauge (5), solenoid valve (12) are located tipping bucket formula rain gauge (5) with between reservoir chamber (8), peristaltic pump (10) and solenoid valve (12) with singlechip (4) electricity is connected.

2. The peristaltic pump based rainfall sensor online calibration system according to claim 1, wherein the calibrator (2) further comprises a temperature and humidity sensor (16), and the temperature and humidity sensor (16) is used for judging whether the environment meets the calibration conditions.

3. The peristaltic pump based rainfall sensor online calibration system according to claim 1, wherein the calibrator (2) further comprises a clock module (14), and the clock module (14) is used for controlling the single chip microcomputer (4) to send a calibration instruction at regular time.

4. The peristaltic pump based rainfall sensor online calibration system according to claim 1, wherein the calibrator (2) further comprises an ultrasonic ranging module (7), and the ultrasonic ranging module (7) is used for judging whether the water volume of the water storage chamber (8) meets the calibration condition.

5. An on-line calibration system for a peristaltic pump based rain sensor according to claim 1 or 2, wherein the calibrator (2) further comprises a rain sensor (3), and the rain sensor (3) is used for judging whether the environment meets the certification condition.

6. The peristaltic pump-based rainfall sensor on-line calibration system of claim 1, wherein the wireless communication module (13) is a GSM/GPRS wireless communication module.

Technical Field

The invention belongs to the technical field of tipping bucket type rain gauge calibration devices, and particularly relates to an online calibration system for a rain sensor based on a peristaltic pump.

Background

A general calibration method of the rain gauge comprises the steps of taking a fixed amount of water, enabling the fixed amount of water to flow into a water bearing funnel of the rain gauge at a fixed speed in a specified time length, simulating precipitation record values of the rain gauge in precipitation environments with different rain intensities, and determining the accuracy of the rain gauge after comparing the precipitation record values with calibration values. The existing rain gauge calibration and calibration device is divided into an outdoor field calibration device and an indoor calibration device according to use occasions, and the two devices have the following different defects:

the prior on-site rain gauge calibration and calibration device generally depends on manual calibration or simple addition of a counter, and the specific method is to take a certain amount of water, control the water to flow into the rain gauge in a specified time length through manual control or by adopting a flow-limiting valve, so that the working conditions of the rain gauge under different rainfalls are simulated. Such products have the following drawbacks:

(1) the precision is poor, the difference between the water flow speed and the water flow speed is large, the water flow time length is unstable, and different rain intensities cannot be accurately simulated;

(2) the operation is basically operated manually, and the operation is complicated, time-consuming and labor-consuming;

(3) the data acquisition is greatly influenced by human factors of an operator, misoperation is difficult to avoid sometimes, and uncertain factors are more;

(4) the archive can not be automatically established, and the integrity of long-term verification data is difficult to ensure;

(5) the self precision of the calibrating device changes along with time, and the calibrating effect is influenced.

The prior calibrating device used indoors has the defects of low automation degree, large volume, heavy weight, incomplete software function, high manufacturing cost, incapability of being used for outdoor field calibration and the like although the precision is ensured to a certain extent.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an online calibration system of a rainfall sensor based on a peristaltic pump, which can automatically calibrate and calibrate the precision of a tipping bucket type rain gauge in a remote way.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an online calibration system of rainfall sensor based on peristaltic pump, includes host computer and calibrator, the calibrator is connected with tipping bucket formula rain gauge, host computer and calibrator wireless connection, the calibrator includes singlechip, peristaltic pump and solenoid valve, the one end of peristaltic pump is passed through the inlet tube and is connected with the reservoir chamber, the other end of peristaltic pump passes through the outlet pipe and is connected with the water-holding device of tipping bucket formula rain gauge, the solenoid valve is located tipping bucket formula rain gauge with between the reservoir chamber, peristaltic pump and solenoid valve with the monolithic is electromechanical to be connected.

In order to optimize the technical scheme, the specific measures adopted further comprise:

further, the calibrator further comprises a temperature and humidity sensor, and the temperature and humidity sensor is used for judging whether the environment meets the verification conditions.

Furthermore, the calibrator further comprises a clock module, wherein the clock module is used for controlling the single chip microcomputer to send the verification instruction at regular time.

Furthermore, the calibrator further comprises an ultrasonic ranging module, and the ultrasonic ranging module is used for judging whether the water quantity of the water storage chamber meets the verification condition.

Further, the calibrator further comprises a rainfall sensor, and the rainfall sensor is used for judging whether the environment meets the verification condition.

Further, the wireless communication module is a GSM/GPRS wireless communication module.

The invention has the beneficial effects that:

according to the online calibration system for the rainfall sensor based on the peristaltic pump, the upper computer is in wireless communication with the single chip microcomputer, the rotation speed and the step number of the peristaltic pump are controlled through the single chip microcomputer, so that automatic simulation and detection of various rainfall intensities are achieved, signals are collected for data processing, and the upper computer can perform unified management of multi-site information; and the problem of remote control is solved by using a wireless communication technology, the verification precision and the working efficiency are effectively improved, and the outdoor adaptability is better.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the calibrator of the present invention.

Fig. 3 is a schematic diagram of the structure of the single chip microcomputer of the invention.

In the figure: the device comprises a host computer 1, a calibrator 2, a rainfall sensor 3, a singlechip 4, a skip bucket type rain gauge 5, a filter screen 6, an ultrasonic ranging module 7, a water storage chamber 8, a water outlet 9, a peristaltic pump 10, a water inlet 11, an electromagnetic valve 12, a GPRS wireless communication module 13, a clock module 14, a stepping motor 15, a temperature and humidity sensor 16 and a pin 17.

Detailed Description

The invention will now be described in further detail with reference to the accompanying figures 1-3.

It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the essential changes.

As shown in fig. 1 and 2, in one embodiment of the present invention, an online calibration system for a rainfall sensor based on a peristaltic pump is characterized by comprising an upper computer 1 and a calibrator 2, wherein the calibrator 2 is connected with a skip-bucket type rainfall meter 5, the upper computer 1 is connected with the calibrator 2 through a wireless communication module 13, the calibrator 2 comprises a single chip microcomputer 4, a peristaltic pump 10 and an electromagnetic valve 12, one end of the peristaltic pump 10 is connected with a water storage chamber 8 through a water inlet pipe, the other end of the peristaltic pump 10 is connected with a water receiver of the skip-bucket type rainfall meter 5 through a water outlet pipe, the electromagnetic valve 12 is arranged between the skip-bucket type rainfall meter 5 and the water storage chamber 8, and the peristaltic pump 10 and the electromagnetic valve 12 are electrically connected with the single chip microcomputer 4.

In this embodiment, the control end of the upper computer 1 is connected with the control panel of the single chip microcomputer 4 through the wireless communication module 13, and is used for remotely controlling each module and receiving returned data. The inlet pipe in the main machine of the calibrator 2 is connected with a peristaltic pump 10 and a water storage chamber 8. Water in the water storage chamber 8 is pumped out by a peristaltic pump 10 and is conveyed to a water bearing device of the tipping bucket type rain gauge 5 from a water outlet 9. The peristaltic pump 10 sends water according to corresponding rotating speed and time under the verification mode selected by the upper computer 1, and precipitation conditions of different rains are simulated. The pulse signal generated by the rain gauge 5 is transmitted back to the control end of the upper computer 1 through the singlechip 4 connected with the signal wire. In 2 host computers of calibrator, peristaltic pump 10 one end is connected to reservoir chamber 8 through water inlet 11, and the other end is connected to the water-holding ware of tipping bucket formula rain gauge 5 through delivery port 9, and the flow of water between tipping bucket formula rain gauge 5 and the reservoir chamber 8 is disconnected by the on-off control of solenoid valve 12, and when solenoid valve 12, peristaltic pump 10 opened, the inside hydrologic cycle that forms of calibrator 2: the rainfall simulated by the verification enters the water storage chamber 8 after being filtered by the filter screen 6 through the tipping bucket type rain gauge 5, and a water path in the water storage chamber 8 enters the tipping bucket type rain gauge 5 through the peristaltic pump 10, so that the automatic verification is realized.

As shown in fig. 2 and 3, in one embodiment of the present invention, the calibrator 2 further includes a temperature and humidity sensor 16, a clock module 14, an ultrasonic ranging module 7, and a rain sensor 3.

In this embodiment, the rainfall sensor 3 and the temperature and humidity sensor 16 communicate with the single chip microcomputer 4 through an I2C protocol, and are used for detecting whether the environment meets the verification condition or not and feeding back the detection condition to the control end of the upper computer 1 in real time. The ultrasonic ranging module 7 communicates with the singlechip 4 through an I2C protocol, and transmits the water quantity condition of the water storage chamber 8 back to the control end of the upper computer 1. When the ultrasonic ranging module 7 judges that the rainfall of the water storage chamber 8 is insufficient, pulse signals of the rainfall sensor 3 and the tipping bucket type rain gauge 5 are collected to simultaneously judge whether the rainfall is insufficient, the electromagnetic valve 12 is opened during the rainfall to fill the water in the water storage chamber 8, and the electromagnetic valve 12 is closed when the ultrasonic ranging module 7 detects that the water amount reaches a specified water level. After the time interval is set by the clock module 14, the calibrator 2 automatically sends a calibration instruction to the single chip microcomputer 4 at regular time to calibrate the dump-bucket rain gauge 5.

In one embodiment of the invention, a working method of an online calibration system of a rainfall sensor based on a peristaltic pump is as follows:

the ultrasonic ranging module 7 judges whether the water volume of the water storage chamber 8 meets the verification conditions, if not, an error is reported to the control end of the upper computer 1, and the verification program is stopped.

The rainfall sensor 3 and the temperature and humidity sensor 16 judge whether the environment meets the verification conditions, if not, an error is reported to the control end of the upper computer 1, and the verification program is stopped.

If the verification conditions are met, the control end of the upper computer 1 selects a verification mode (three rain intensities of light rain, medium rain and heavy rain) and starts a verification process.

The upper computer 1 sends out an instruction, the electromagnetic valve 12 and the peristaltic pump 10 are opened, the peristaltic pump 10 injects water into the tipping bucket rain gauge 5 at the rotating speed and time under the selected mode, and pulse signals output by the tipping bucket rain gauge 5 are collected.

When the set rainfall is reached, the peristaltic pump 10 is closed, the pulse signals output by the tipping bucket type rain gauge 5 are collected continuously until the signals are not generated any more, and the electromagnetic valve 12 is closed. And (6) finishing detection. The clock module 13 restarts the timing.

The singlechip 3 uploads the number of the pulse signals to the control end of the upper computer 1 through the wireless communication module 13, compares the number with an ideal value, gives a result, analyzes errors and visually displays the result and the errors on an interface of the upper computer 1.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.