TWI731706B - Measuring device and system for water level and method thereof - Google Patents

Abstract

A measuring technology for water level is disclosed in the present invention. The measuring technology includes a measuring device, a measuring system, and a measuring method. The measuring technology at least includes a step motor and a supersonic sensor. The step motor is utilized to make the supersonic sensor move to a plurality of reference locations from a first setting location. The supersonic sensor is utilized to sense a water level reference distance at each reference location. The measuring technology is utilized to compute the height of the water level with the water level reference distances to improve the accuracy and stability of measurements, in which the height of the water level is a vertical distance between first setting location and a reference location.

Description

Water level measuring device, measuring system and measuring method

The present invention relates to a design of a water level height measuring device, and in particular to a design of a water level height measuring device with interactive operation of ultrasonic wave and stepping motor.

In the prior art, the measurement method of the long-distance water level measuring device mainly uses ultrasonic waves or lasers. The use of ultrasonic sensing components for water level measurement is easily limited by the resolution of the ultrasonic sensing components themselves, which limits the measurement distance and the accuracy of water level measurement. To increase the measurement distance of the ultrasonic sensing component, a large amount of cost is bound to increase. Although the laser sensing component has a longer measurement distance and higher accuracy, the cost of using it is also relatively expensive. Therefore, the water level measurement in the prior art has room for improvement.

In view of the prior art, the measurement distance and accuracy of the ultrasonic sensor components are limited by the resolution, and the cost of using the laser sensor components is too expensive. One of the main objectives of the present invention is to provide a design of a long-distance water level height measuring device with the interactive operation of ultrasonic and stepping motors to solve at least one of the problems in the prior art.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention are to provide a water level height measuring device for measuring a water level height in an effective height measurement interval, including an ultrasonic sensing component and a transmission Components and a stepping motor.

The ultrasonic sensing component is arranged at an initial setting position to be driven to move from the initial setting position to a measurement initial position and a plurality of reference positions sequentially along a first direction, and perform at least one measurement at the initial measurement position In the initial measurement, at least one test water level distance is measured, and at least one water level reference distance corresponding to each reference position is measured, thereby measuring a plurality of the above water level reference distances corresponding to the reference positions. The transmission component is connected to the ultrasonic sensing component. The stepping motor is connected to the transmission component to drive the transmission component and drive the ultrasonic sensing component to sequentially move to the initial measurement position and each reference position.

Wherein, the initial measurement position and the reference position are both within the effective height measurement interval, and the water level height is a vertical distance between the initial position and a water level surface.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the water level measuring device further include a supporting component. The supporting component has a supporting height for the transmission component to set up and utilize the support The height determines the initial position of the ultrasonic sensing component.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the supporting component of the water level measuring device include a vertical extension, and the vertical extension is along a direction opposite to the first direction. Extend in the second direction.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the supporting component of the water level measuring device further include a horizontal extension section connected to the vertical extension section and along the first and second sections. The two directions are perpendicular to the third direction.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the transmission component of the water level measuring device include a conveyor belt and a plurality of gears.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the water level measuring device further include a position sensing component, which is used to sense the initial position of the ultrasonic sensing component. .

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the water level measuring device further include a solar cell module for receiving a sunlight and converting it into at least one Used to provide the stored electric energy to the stepping motor.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention is to additionally provide a water level height measuring system, which includes a water level height measuring device and a controller. The water level height measuring device includes an ultrasonic sensing component, a transmission component and a stepping motor.

The ultrasonic sensing component is arranged at an initial setting position to be driven to move from the initial setting position to a measurement initial position and a plurality of reference positions sequentially along a first direction, and perform at least one measurement at the initial measurement position In the initial measurement, at least one test water level distance is measured, and at least one water level reference distance corresponding to each reference position is measured, thereby measuring a plurality of the above water level reference distances corresponding to the reference positions. The transmission component is connected to the ultrasonic sensing component. The stepping motor is connected to the transmission component to drive the transmission component and drive the ultrasonic sensing component to sequentially move to the initial measurement position and each reference position.

The controller communicates with the ultrasonic sensing component of the water level height measuring device and the stepping motor, which is used to control the stepping motor and receive and set the initial position, measure the initial position, test the distance of the water level, the reference position and the reference distance of the water level. To calculate the height of the water level.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the controller in the water level measurement system include a signal receiving and converting module, and the signal receiving and converting module is connected to the ultrasonic sensing component in communication. , To receive and set the initial position, measure the initial position, test the distance of the water level, the reference position and the reference distance of the water level.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the controller in the water level measurement system further include a distance calculation module, and the distance calculation module is electrically connected to the signal receiving and converting module The group is used to receive and set the initial position, measure the initial position, test the water level distance, the reference position and the water level reference distance, and calculate the water level height with a built-in calibration rule.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the built-in correction rule in the water level measurement system, which is one of an arithmetic mean, a geometric mean, and a weighted mean. By.

Based on the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the controller in the water level measurement system further include a communication module and a communication control module. The communication module is used to transmit the initial setting position, the initial measurement position, the test water level distance, the reference position, the water level reference distance and the water level height. The communication control module is electrically connected to the signal receiving and conversion module, the distance calculation module, and the communication module to control the communication module to transmit the initial setting position, the initial measurement position, the test water level distance, the reference position, the water level reference distance, and the The height of the water level.

Based on the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the controller in the water level measurement system further includes a motor control module, and the motor control module is used to control the stepping motor.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the controller in the water level measurement system further include a main control module, and the main control module is electrically connected to the signal receiving and converting mode The group, distance calculation module, motor control module and communication control module are used to control the signal receiving and conversion module, distance calculation module, motor control module and communication control module.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention is to provide another method for measuring the height of water level, which is implemented using the above-mentioned water level height measurement system, including: (a) confirming that the ultrasonic sensing component is in a position In the normal state, use a position sensing component to sense the initial position of the ultrasonic sensing component, and use the stepping motor to drive the transmission component to drive the ultrasonic sensing component to move in the first direction; (b) Use the controller to confirm the ultrasonic When the sonic sensing component is in the initial measurement position within the effective height measurement interval, the ultrasonic sensing component is used to perform initial measurement to measure the test water level distance; (c) Use the controller to confirm that the test water level distance is within an error range After inside, use the stepping motor to drive the transmission assembly to drive the ultrasonic sensing assembly to move to each reference position along the first direction, and use the ultrasonic sensing assembly to measure the water level reference distance; and (d) use the controller to receive the setting Initial position, measurement initial position, test water level distance, reference position and water level reference distance, and calculate the water level height accordingly.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is the water level height measurement method in the water level height measurement method. After step (d), it further includes: (e) using the controller to change Set the initial position, measurement initial position, test water level distance, reference position, water level reference distance, and water level height to a cloud platform.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is a method for measuring the height of the water level. After step (d), it further includes: (f) using a stepping motor to drive the transmission assembly to drive the ultrasonic sensor The test component moves back to the initial position.

In summary, the water level measuring device, water level measuring system, and water level measuring method provided by the present invention utilize the interaction of a stepping motor and an ultrasonic sensing component to obtain a more accurate The height of the water level.

The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagram. According to the following description and the scope of patent application, the advantages and features of the present invention will be more clear. It should be noted that the drawings all adopt a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

Please refer to the first and second figures. The first figure is a block diagram showing the water level measurement system provided by the preferred embodiment of the present invention; and the second figure is the block diagram showing the preferred embodiment of the present invention. Schematic diagram of the water level height measuring device. As shown in the figure, a water level measuring system 100 includes a water level measuring device 1, a controller 2, a cloud platform 3, and a motor driving circuit 4.

The water level measuring device 1 includes an ultrasonic sensing component 11, a transmission component 12, a stepping motor 13, a supporting component 14, a position sensing component 15 and a solar cell module 16. Generally speaking, the ultrasonic sensing component 11 usually includes an ultrasonic sensor and its required components.

The controller 2 includes a signal receiving and converting module 21, a distance calculating module 22, a communication module 23, a communication control module 24, a motor control module 25 and a main control module 26. The controller 2 communicates with the ultrasonic sensing component 11, the position sensing component 15, the cloud platform 3 and the motor driving circuit 4.

Please refer to Figures 1 to 8 together. Figure 3 is a schematic diagram showing the movement of the ultrasonic sensing component of the water level measurement system provided by the preferred embodiment of the present invention from its initial position; Figure 4 It is a schematic diagram showing the ultrasonic sensing component of the water level height measurement system provided by the preferred embodiment of the present invention at the initial measurement position; and, the fifth to eighth figures show the preferred embodiment of the present invention. The schematic diagram of the ultrasonic sensing component of the water level height measurement system at the reference position. As shown in the figure, the water level height measuring system 100 is used to measure the water level height of a water level surface.

The ultrasonic sensing component 11 is arranged at an initial setting position LS, and is driven by the transmission component 12 to move along a first direction D1. The transmission assembly 12 is connected to the ultrasonic sensing assembly 11 and is disposed on the support assembly 14. The stepping motor 13 is connected to the transmission assembly 12 and drives the transmission assembly 12 so as to move the ultrasonic sensing assembly 11 along the first direction D1.

In this embodiment, the transmission assembly 12 includes a conveyor belt 121 and a plurality of gears 122. The supporting assembly 14 has a supporting height and includes a vertical extension section 141 and a horizontal extension section 142. The vertical extension 141 extends along a second direction D2 opposite to the first direction D1. The horizontal extension section 142 is connected to the vertical extension section 141 and extends along a third direction D3 perpendicular to the second direction D2. The support height is related to the set initial position LS.

The position sensing component 15 is used to sense the initial position LS of the ultrasonic sensing component 11. Preferably, the position sensing component 15 also senses the reference position and the amount of change between the reference position. In practice, the position sensing component 15 can use laser or ultrasonic methods for sensing, and includes multiple position sensing units, but not limited to this, the position sensing component 15 can also use acceleration, gravity or It is other sensing methods for sensing. The position sensing unit may be respectively disposed in the ultrasonic sensing component 11, the transmission component 12 and the stepping motor 13, so as to sense the set initial position LS, the reference position, and the amount of change between the reference position.

The solar cell module 16 is used to receive sunlight and convert it into a stored electrical energy for at least the stepping motor 13. Preferably, the stored electrical energy can be provided to the entire water level measuring system 100. In practice, the solar cell module 16 usually includes a solar charging board and a capacitor.

The controller 2 communicatively connects the ultrasonic sensing component 11 and the stepping motor 13 of the water level measuring device 1 to control the distance measured by the stepping motor 13 and the receiving ultrasonic sensing component 11, and further calculate The height of the water level. In addition, the controller 2 can also communicate with the cloud platform 3 so as to transmit the above-mentioned information to the cloud platform 3.

In more detail, when the ultrasonic sensing component 11 is at the initial setting position LS, the controller 2 will first confirm whether the ultrasonic sensing component 11 is in a normal state. If the ultrasonic sensing component 11 is in an abnormal state, for example, the distance cannot be measured, the signal cannot be transmitted, the signal cannot be received, etc., the controller 2 will not perform the following control actions.

After the controller 2 confirms that the ultrasonic sensing component 11 is in a normal state, the motor control module 25 will control the stepping motor 13 so that the ultrasonic sensing component 11 will move from the initial position LS along the first direction D1 until it exceeds the limit. The acoustic wave sensing component 11 is located in the effective height measurement interval. In practice, the motor control module 25 is usually electrically connected to the motor driving circuit 4, and the stepping motor 13 is controlled and driven by the motor driving circuit 4.

The controller 2 judges whether the ultrasonic sensing element 11 is located within the effective height measurement interval according to the distance measured by the ultrasonic sensing element 11 at each position. When the ultrasonic sensing element 11 is located at an invalid measurement position LE, the distance measured by the ultrasonic sensing element 11 will be less than the actual distance WE. At this time, the ultrasonic sensing element 11 is not at the effective height for measurement. Within the interval. Practically speaking, the specification of the ultrasonic sensing component 11 itself has a recommended measurement range, and the recommended measurement range of the specification can define the effective height measurement range of the invention.

In practice, because the actual distance WE is not known, the controller 2 uses the distance received by the signal receiving and converting module 21 to make a judgment. For example, if the maximum measurement distance of the ultrasonic sensing component 11 is 8 meters, and the measurement distances received by the signal receiving conversion module 21 are all 8 meters, the controller 2 will determine that the ultrasonic sensing component 11 Not within the effective height measurement range. Until the measurement distance received by the signal receiving conversion module 21 starts to be less than 8 meters, the controller 2 will determine that the ultrasonic sensing component 11 is located within the effective height measurement interval. Together with the illustration, the actual distance WE in the third figure may be 9 meters, 15 meters, etc., because the actual distance WE exceeds the maximum measurement distance of the ultrasonic sensing component 11, so the ultrasonic sensing component 11 The measured distances at the invalid measurement position LE are all 8 meters. The controller 2 will determine that the ultrasonic sensing component 11 is not within the effective height measurement range.

Then, the ultrasonic sensing component 11 will continue to move along the first direction D1 until the controller 2 determines that the ultrasonic sensing component 11 is within the effective height measurement interval. Continuing the above example, when the measurement distance received by the signal receiving conversion module 21 is less than 8 meters, the controller 2 can determine that the ultrasonic sensing component 11 is within the effective height measurement interval. Preferably, the controller 2 It can be determined that the ultrasonic sensing component 11 is located within the effective height measurement interval when the measurement distance received multiple times by the signal receiving conversion module 21 is less than 8 meters. At this time, the ultrasonic sensing component 11 is located at an initial measurement position L0. A test water level distance W0 measured by the ultrasonic sensor component 11 at the initial measurement position L0 will be less than the maximum measurement distance of the ultrasonic sensor component 11. Continuing the above example, the test water level distance W0 will be less than 8 meter. There is a distance X between the measured initial position L0 and the set initial position LS.

Preferably, the controller 2 controls the ultrasonic sensing component 11 to perform multiple measurements at the initial measurement position L0, and confirms whether the multiple test water level distances W0 obtained from the multiple measurements are within an error range. To further ensure the measurement stability of the ultrasonic sensing component 11. The error range can be calculated by various statistical methods, such as averaging all test water level distances W0, and taking the average as the reference value plus or minus 3% as the error range, calculating the standard deviation of all test water level distances W0, and taking the average Each plus or minus one standard deviation is calculated as the margin of error or calculated by other statistical methods.

After the controller 2 determines that the test water level distance W0 is within the error range, the motor control module 25 controls the stepping motor 13 to drive the ultrasonic sensing component 11 to move a fixed distance Y, so that the ultrasonic sensing component 11 Move to a reference position L1. The ultrasonic sensing component 11 measures a water level reference distance W1 at the reference position L1.

Then, the motor control module 25 controls the stepping motor 13 and drives the ultrasonic sensing component 11 from the reference position L1 to move a fixed distance Y to the reference position L2. The ultrasonic sensing component 11 measures the water level reference distance W2 at the reference position L2.

The motor control module 25 controls the stepping motor 13 to drive the ultrasonic sensing assembly 11 to move N times, each time it moves a fixed distance Y to move to N reference positions. The ultrasonic sensing component 11 measures a water level reference distance at each reference position.

In this embodiment, four movements are drawn and a water level reference distance is measured at each reference position for illustration, but it is not limited to this. As shown in the figure, the ultrasonic sensing component 11 will continue to move a fixed distance Y to the reference position L3 and measure the water level reference distance W3, and continue to move the fixed distance Y to the reference position L4 and measure the water level reference distance W4.

The signal receiving and converting module 21 receives all the distances measured by the ultrasonic sensing component 11, including the test water level distance W0 and the water level reference distances W1, W2, W3, and W4. In addition, the signal receiving and converting module 21 can also receive the set initial position LS, the measured initial position L0, and the reference positions L1, L2, L3, and L4 sensed by the position sensing component 15. The signal receiving and converting module 21 receives each position mainly to know the distance X and the fixed distance Y. In addition, the distance X and the fixed distance Y can also be obtained by the controller 2 by converting the angle of rotation of the stepping motor 13 and the number of turns. In practice, the angle and number of turns can be obtained by the feedback of the stepping motor 13, or the angle and number of turns of the stepping motor 13 can be obtained simply by the motor control module 25 in the controller 2.

The distance calculating module 22 is electrically connected to the signal receiving and converting module 21, and is based on the setting initial position LS, measuring initial position L0, testing water level distance W0, reference positions L1, L2, L3, L4, and water level reference distances W1, W2, W3, W4, and calculate the water level height.

For example, the distance calculation module 22 will add the distance X, the fixed distance Y and the water level reference distance W1 to calculate a first water level measurement height; add the distance X, two fixed distances Y and the water level reference distance W2 to calculate Calculate a second water level measurement height; add the distance X, three fixed distances Y and the water level reference distance W3 to calculate a third water level measurement height; compare the distance X, four fixed distances Y to the water level reference distance W4 Plus calculate a fourth water level measurement height. Next, the distance calculation module 22 will average the first water level measurement height, the second water level measurement height, the third water level measurement height, and the fourth water level measurement height to calculate the water level height, but it is not limited to this. .

The distance calculation module 22 can also use other built-in calibration rules to calculate the water level. For example, the weighted average is used. Because of the element characteristics of the ultrasonic sensing component 11, when the ultrasonic sensing component 11 is within the effective height measurement interval and the distance from the water level H is shorter, the measured distance The more accurate it will be. Therefore, the distance calculation module 22 can also multiply the fourth water level measurement height by a higher weight value, multiply the first water level measurement height by a lower weight value, and multiply each water level measurement height by the weight value. Add and divide by the total weight value to get the water level height by using the weighted average. In addition, after the distance calculation module 22 calculates the water level height, the water level height can be used to further calculate other distances, such as the distance between the shore and the water level, the distance between the shore and the ultrasonic sensing component, and so on.

Preferably, the main control module 26 is electrically connected to the signal receiving and converting module 21, the distance calculating module 22, the communication control module 24, and the motor control module 25 to control the actions of these modules.

In addition, the ultrasonic sensing component 11 can also perform multiple measurements at each reference position, and a plurality of water level reference distances are measured, and the distance calculation module 22 can receive a plurality of water level reference distances at a single reference position, and use The average, median, or other statistical method is used to obtain an advanced reference distance of water level, and the advanced reference distance of water level obtained by multiple reference distances of water level at each reference position is used to calculate the water level height. Generally speaking, if the water level of the measured water level fluctuates greatly, it is better to perform multiple measurements at the same location; if the water level of the measured water level fluctuates less, it is better at the same location. It is also possible to perform the measurement only once.

In addition, the communication module 23 transmits all the above-mentioned measurement results and calculation results to the cloud platform 3 for storage, and can also be used for viewing by a remote user. The communication control module 24 is electrically connected and controls whether the communication module 23 should transmit the results. In practice, if the communication control module 24 wants to control the communication module 23 to transmit these results or to communicate with other communication devices, it will first drive the communication module 23, and then control the communication module 23 to communicate with other communication devices and transmit These results.

Next, please refer to the first to the ninth B, wherein the ninth A and the ninth B show the flow chart of the water level height measurement method provided by the preferred embodiment of the present invention. As shown in the figure, the water level height measuring method is implemented using the water level height measuring system 100 and the water level height measuring device 1 as shown in the first and second figures, and includes the following steps S101 to S108. It should be noted that the circle A, circle B, and circle C in the ninth A figure are continued to the circle A, the circle B, and the circle C in the ninth B figure.

Step S101: Confirm whether the ultrasonic sensing component is in a normal state.

Use the controller 2 as shown in the first figure to confirm whether the ultrasonic sensing component 11 is in a normal state, and when it is confirmed that the ultrasonic sensing component 11 is in a normal state, go to step S102; after confirming that the ultrasonic sensing component 11 is in a normal state, In the abnormal state, the water level height measurement method is ended.

Step S102: Use the position sensing component to sense the initial position of the ultrasonic sensing component, and use the stepping motor to drive the transmission component to drive the ultrasonic sensing component to move in the first direction.

The position sensing component 15 in the second figure is used to sense the initial position LS of the ultrasonic sensing component 11, and the stepping motor 13 in the second figure is used to drive the transmission component 12 to drive the ultrasonic sensing component 11 along. Move in the first direction D1.

Step S103: Use the controller to confirm the ultrasonic sensing group Whether the piece is located in the initial measurement position within the effective height measurement interval.

Use the controller 2 as shown in the first figure to confirm whether the ultrasonic sensing component 11 is located at the initial measurement position L0 within the effective height measurement interval, and when confirming that the ultrasonic sensing component 11 is located at the initial measurement position L0, enter Step S104; and when it is determined that the ultrasonic sensing component 11 is not within the effective height measurement interval, return to step S102, and the stepping motor 13 drives the transmission component 12 to drive the ultrasonic sensing component 11 to continue along the first direction D1 mobile.

Step S104: Use the ultrasonic sensing component to perform initial measurement, so as to measure the distance of the test water level.

The ultrasonic sensing component 11 is used to measure a plurality of test water level distances W0.

Step S105: Use the controller to determine whether the test water level distance is within an error range.

The controller 2 as shown in the first figure is used to determine whether all the test water level distances W0 are within an error range. The error range can be calculated by various statistical formulas. When the judgment is yes, go to step S106; and when the judgment is no, the water level height measurement method is ended.

Step S106: Use the stepping motor to drive the transmission assembly to drive the ultrasonic sensing assembly to move to each reference position along the first direction, and measure the reference distance of each water level.

The stepping motor 13 is used to drive the transmission assembly 12 to drive the ultrasonic sensing assembly 11 to sequentially move along the first direction D1 to the reference positions L1, L2, L3, and L4. The ultrasonic sensing component 11 will correspondingly measure a water level reference distance W1, W2, W3, W4 at each reference position L1, L2, L3, L4.

Step S107: Use the controller to receive and set the initial position, measure the initial position, test the water level distance, the reference position and the water level reference distance, and calculate the water level height accordingly.

Use the controller 2 as shown in the first figure, preferably the distance calculation module 22, based on setting the initial position LS, measuring the initial position L0, testing the water level distance W0, reference positions L1, L2, L3, L4 and the water level reference Distance W1, W2, W3, W4, calculate the water level height. The built-in calculation rule of the distance calculation module 22 can be an arithmetic mean, a geometric mean, a weighted mean, or other statistical formulas.

Step S108: Use the controller to transmit the set initial position, the measured initial position, the test water level distance, the reference position, the water level reference distance, and the water level height to the cloud platform, and use the stepper motor to drive the transmission component to drive the ultrasonic sensing component to move back Set the initial position.

Finally, the controller 2 can transmit the set initial position LS, the measured initial position L0, the test water level distance W0, the reference position L1, L2, L3, L4, the water level reference distance W1, W2, W3, W4 and the water level height to the cloud platform , And store the above-mentioned data on the cloud platform, which can also be viewed by a remote user. The stepping motor 13 can also further drive the transmission assembly 12 to drive the ultrasonic sensing assembly 11 to move back to the set initial position LS to complete the above-mentioned measurement. And wait for the next measurement.

The water level calculated according to the present invention is confirmed by experimental data and is indeed more accurate than the previous technology. Please refer to the table below.

This experiment first uses standard measurement tools to confirm the position of the ultrasonic sensing component in the prior art, that is, the actual water level height, and record the current water level measured by the ultrasonic sensing component. The present invention uses a standard measurement tool to confirm that the initial position LS of the ultrasonic sensing component 11 is 500mm, 1000mm, 1500mm, and 2000mm, respectively, and performs the measurement according to the above-mentioned measurement methods and calculates them respectively. The height of the water level.

It can be clearly known from the experimental data that regardless of the actual water level height, the error rate between the water level height and the actual water level height obtained by the present invention is indeed lower than that of the prior art.

In summary, the water level measuring device, water level measuring system, and water level measuring method provided by the present invention utilize the interaction of a stepping motor and an ultrasonic sensing component to obtain a more accurate The height of the water level.

Based on the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalent arrangements within the scope of the patent for which the present invention is intended.

100: Water level height measurement system 1: Water level height measuring device 11: Ultrasonic sensing components 12: Transmission components 121: Conveyor belt 122: Gear 13: stepping motor 14: Support components 141: Vertical extension 142: Horizontal extension 15: Position sensing components 16: Solar cell module 2: Controller 21: Signal receiving conversion module 22: Distance calculation module 23: Communication module 24: Communication control module 25: Motor control module 26: Main control module 3: Cloud platform 4: Motor drive circuit D1: First direction D2: second direction D3: Third party H: water level L0: Measure the initial position L1, L2, L3, L4: reference position LE: Invalid measurement position LS: Set initial position W0: Test water level distance W1, W2, W3, W4: water level reference distance WE: Actual distance X: distance Y: fixed distance

The first figure is a block diagram showing the water level height measurement system provided by the preferred embodiment of the present invention; The second figure is a schematic diagram showing the water level height measuring device provided by the preferred embodiment of the present invention; The third figure is a schematic diagram showing the movement of the ultrasonic sensing component of the water level height measurement system provided by the preferred embodiment of the present invention from its initial position; The fourth figure is a schematic diagram showing the ultrasonic sensing component of the water level height measurement system provided by the preferred embodiment of the present invention in the initial measurement position; Figures 5 to 8 are schematic diagrams showing the ultrasonic sensing components of the water level height measurement system provided by the preferred embodiment of the present invention at the reference position; and Figures ninth A and ninth B are flowcharts of the water level measurement method provided by the preferred embodiment of the present invention.

100: Water level height measurement system

11: Ultrasonic sensing components

13: stepping motor

15: Position sensing components

2: Controller

21: Signal receiving conversion module

22: Distance calculation module

23: Communication module

24: Communication control module

25: Motor control module

26: Main control module

3: Cloud platform

4: Motor drive circuit

Claims (17)

A water level height measuring device is used to measure a water level height in an effective height measurement interval, including: An ultrasonic sensing component is set at an initial setting position to be driven to move from the initial setting position to a measurement initial position and a plurality of reference positions sequentially along a first direction, and in the measurement Perform at least one initial measurement at the initial position to measure at least one test water level distance, and measure at least one water level reference distance corresponding to each of the reference positions, so as to measure a plurality of reference positions corresponding to the reference positions The above water level reference distance; A transmission component connected to the ultrasonic sensing component; and A stepping motor connected to the transmission assembly for driving the transmission assembly to drive the ultrasonic sensing assembly to sequentially move to the measurement initial position and each of the reference positions; Wherein, the measurement initial position and the reference positions are both located within the effective height measurement interval, and the water level height is a vertical distance between the set initial position and a water level surface. The water level height measuring device according to claim 1, further comprising a supporting component having a supporting height for the transmission component to be set, and using the supporting height to determine the ultrasonic sensing component Set the initial position. The water level measuring device according to claim 2, wherein the supporting component includes a vertical extension section, and the vertical extension section extends in a second direction opposite to the first direction. The water level measuring device according to claim 3, wherein the support assembly further includes a horizontal extension section connected to the vertical extension section and extending along a third direction perpendicular to the second direction . The water level height measuring device according to claim 1, wherein the transmission assembly includes a conveyor belt and a plurality of gears. The water level height measuring device according to claim 1, further comprising a position sensing component, and the position sensing component is used to sense the set initial position of the ultrasonic sensing component. The water level measuring device according to claim 1, further comprising a solar cell module for receiving a sunlight and converting it into a stored electric energy at least for supplying to the stepping motor . A water level height measurement system is used to measure a water level height in an effective height measurement interval, including: A water level height measuring device, including: An ultrasonic sensing component is located at an initial setting position for driving to move from the initial setting position to a measurement initial position and a plurality of reference positions sequentially along a first direction, and in the initial measurement At least one initial measurement of the position is performed to measure at least one test water level distance, and at least one water level reference distance is correspondingly measured at each of the reference positions, so as to measure a plurality of the above-mentioned reference positions corresponding to the reference positions. Water level reference distance; A transmission component connected to the ultrasonic sensing component; and A stepping motor connected to the transmission component for driving the transmission component to drive the ultrasonic sensing component to move to each of the reference positions; and A controller communicatively connects the ultrasonic sensing component of the water level measuring device and the stepping motor, for controlling the stepping motor and receiving the set initial position, the measurement initial position, and the at least one test The water level distance, the reference distances between the reference positions and the water level, and the water level height is calculated accordingly; Wherein, the measurement initial position and the reference positions are both located in the effective height measurement interval, and the water level height is a vertical distance between the set initial position and a water level surface. The water level height measurement system according to claim 8, wherein the controller includes a signal receiving and converting module, and the signal receiving and converting module is communicatively connected to the ultrasonic sensing component for receiving the set initial position , The initial measurement position, the distances of the test water levels, the reference distances between the reference positions and the water levels. The water level height measurement system according to claim 9, wherein the controller further includes a distance calculation module, and the distance calculation module is electrically connected to the signal receiving conversion module for receiving the set initial position , The measurement initial position, the test water level distances, the reference positions and the water level reference distances, and the water level height is calculated by a built-in calibration rule. The water level height measurement system according to claim 10, wherein the built-in calibration rule is one of an arithmetic average, a geometric average, and a weighted average. The water level height measurement system according to claim 10, wherein the controller further includes: A communication module for transmitting the set initial position, the measurement initial position, the at least one test water level distance, the reference positions, the water level reference distances, and the water level height; and A communication control module is electrically connected to the signal receiving conversion module, the distance calculation module and the communication module to control the communication module to transmit the set initial position, the measured initial position, and the at least A test water level distance, the reference positions, the water level reference distances, and the water level height. The water level height measurement system according to claim 12, wherein the controller further includes a motor control module, and the motor control module is used to control the stepping motor. The water level height measurement system according to claim 13, wherein the controller further includes a main control module, and the main control module is electrically connected to the signal receiving conversion module, the distance calculation module, and the The motor control module and the communication control module are used for controlling the signal receiving and converting module, the distance calculating module, the motor control module and the communication control module. A method for measuring water level height, which is implemented using the water level height measurement system as described in claim 8, including: (a) When confirming that the ultrasonic sensing component is in a normal state, use a position sensing component to sense the initial position of the ultrasonic sensing component, and use the stepping motor to drive the transmission component to drive the ultrasonic The sensing component moves along the first direction; (b) When the controller is used to confirm that the ultrasonic sensing component is located at the initial measurement position within the effective height measurement interval, the ultrasonic sensing component is used to perform the at least one initial measurement, thereby measuring the At least one test water level distance; (c) After using the controller to confirm that the test water level distances are within an error range, use the stepping motor to drive the transmission assembly to drive the ultrasonic sensing assembly to move along the first direction to each of the reference positions, And use the ultrasonic sensing component to measure the water level reference distances; and (d) Using the controller to receive the set initial position, the measured initial position, the at least one test water level distance, the reference positions and the water level reference distances, and calculate the water level height accordingly. The water level height measurement method described in claim 15, after this step (d), further includes: (e) Using the controller to transmit the set initial position, the measured initial position, the at least one test water level distance, the reference positions, the water level reference distances, and the water level height to a cloud platform. The water level height measurement method described in claim 15, after this step (d), further includes: (f) Using the stepping motor to drive the transmission assembly to drive the ultrasonic sensing assembly to move back to the set initial position.

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