阅读说明：本技术 基于量水槽检测装置及量水槽流量检测方法 (Measuring tank based detection device and measuring tank flow detection method ) 是由 吴文勇 刘恬恬 胡雅琪 马蒙 于 2021-01-20 设计创作，主要内容包括：本发明公开了一种基于量水槽检测装置及量水槽流量检测方法,通过采用超声波探头矩阵,使得数据的采集更加准确,可以实现需水预测、灌溉决策、定量供水等功能。根据本发明提供的方法,分别计算超声波探头矩阵的探头故障、正常情况下的流量,在故障时,分连续及不连续的情况计算流量,使得测量数据更加准确,同时对数据进行实时监测及报警,也可以采用终端APP、无线通讯模块及报警器的方式,将数据进行实时的传输,实现远程参数设置和数据监控。(The invention discloses a measuring tank based detection device and a measuring tank flow detection method, which can enable data acquisition to be more accurate and can realize the functions of water demand prediction, irrigation decision, quantitative water supply and the like by adopting an ultrasonic probe matrix. According to the method provided by the invention, the probe fault and the flow under the normal condition of the ultrasonic probe matrix are respectively calculated, and the flow is calculated under the continuous and discontinuous conditions during the fault, so that the measured data is more accurate, and meanwhile, the data is monitored and alarmed in real time, and the data can be transmitted in real time by adopting a terminal APP, a wireless communication module and an alarm, so that the remote parameter setting and the data monitoring are realized.)

1. A measuring tank detecting device is characterized by comprising: the device comprises a water measuring tank, an ultrasonic probe matrix, a vertical rod, a controller, a liquid level sensor, a wireless communication module, an intelligent acquisition chip and an alarm;

the water measuring tank is used for connecting a section channel;

the ultrasonic probe matrix is arranged on the outer surfaces of vertical plates on two sides of the water measuring tank and is used for acquiring the sound wave propagation time of different sound channels and the length of a sound wave propagation channel;

the liquid level sensor is arranged in the water measuring tank and used for acquiring and measuring the depth of the water surface in real time;

the controller, the intelligent acquisition chip and the alarm are arranged in the upright rod; the intelligent acquisition chip is used for acquiring the water depth in the measuring flume, the elevation of the bottom plate of the runner of the measuring flume, the width of the measuring flume, the number of submerged runners and the height of the measuring flume; the controller comprises a memory and a processor, the processor calculates the linear average flow velocity and the water tank flow in real time according to the measurement parameters of the ultrasonic probe matrix, the liquid level sensor and the intelligent acquisition chip, and the memory is used for storing the calculation data of the controller;

and the alarm is used for giving an alarm when the controller detects that the probes of the ultrasonic probe matrix are damaged or failed.

2. The sink testing device of claim 1, further comprising: a terminal APP and a wireless communication module;

the wireless communication module is arranged in the upright rod;

and the terminal APP performs data transmission with the controller through the wireless communication module.

3. A flume detector apparatus according to claim 1 or 2, further comprising: solar cell panel, solar cell panel sets up the top of pole setting, solar cell panel connects ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm are the ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm power supply.

4. A method for measuring a flow rate of a sink, the method being based on the device of any one of claims 1 to 3, the method comprising:

calculating the section average flow velocity of the corresponding sound channel according to the line average flow velocity of different sound channels;

judging whether the channel is full of pipes or not according to the water depth in the flume and the height of the flume, and respectively calculating the total flow of the cross section under the conditions of full pipes and non-full pipes according to the average flow rate of the cross section of each sound channel;

and when the probe of the ultrasonic probe matrix is abnormal, calculating the total flow of the cross section according to the sound channel correlation coefficient.

5. The method of claim 4, wherein the linear average flow velocity of different sound channels is calculated by the following formula:

Δt＝t₂-t₁

wherein, v_iIs the line average flow velocity, l, over the i channel_iIs the length of the acoustic propagation channel, theta is the acoustic channel angle, t₁Time of forward propagation of sound wave, t₂Is the time of the reverse propagation of the sound wave, delta t is the difference value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the reverse direction,the average value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the upstream direction is shown.

6. The method for detecting the flow of a measuring flume according to claim 5, wherein the average flow velocity of the corresponding cross section of different sound channels is calculated by the following formula:

wherein the content of the first and second substances,is the i-th part cross-sectional average flow velocity, k_iIs the correction coefficient of the ith channel.

7. The method for measuring a flow rate of a sink according to claim 6,

when h is generated_iWhen the pipe is full or more than D, the total flow of the section is calculated by the following formula:

when 0 < h_iWhen < D is not full, the total flow of the cross section is calculated by the following formula:

h_i＝H_i-d

wherein Q is the cross-section calculated flow, h_iFor measuring the depth of water in the water tank H_iThe depth of the water surface measured by the liquid level sensor, d is the elevation of the bottom plate of the runner of the measuring flume, b is the width of the measuring flume, n is the number of the submerged runners, C_iThe coefficient is not full pipe, D is the height of the measuring tank.

8. The method for measuring the flow of water according to claim 7, wherein the time h is_i>When water exists in the channel 0, v for preset times is continuously collected_iIf the number of the alarm signals is 0, alarming; when h is generated_iContinuously collecting v of preset times when no water exists in a channel less than or equal to 0_iAnd if the values are all larger than 0, alarming.

9. The method for measuring flume flow according to claim 8, wherein when the probe of the ultrasonic probe matrix is discontinuous and abnormal, the average flow velocity of the section of the i-th part is calculated according to the following process

The probes of the ultrasonic probe matrix are numbered, and the numbers of the probes are 1, 2, …, i, i +1, …, n-1 and n from the bottom of the equipment along the longitudinal direction;

when the probe numbered 1 fails,

when the probe numbered i fails,

when a probe numbered n fails,

wherein, g_iIs the correlation coefficient of the i channel.

10. The method for detecting the flow rate of a measuring tank according to claim 8, wherein when a plurality of consecutive probes are abnormal, and the missing probe is numbered j, j +1, …, j + n, then:

at this time, the cross section calculates the flow rate

Technical Field

The invention relates to the technical field of ultrasonic detection, in particular to a measuring tank based detection device and a measuring tank flow detection method.

Background

With the increasing shortage of water resources in the world, the high-efficiency utilization of water resources becomes a problem to be solved urgently in all countries in the world, and currently, the current situation of water resource shortage in China is severe, and the water resource shortage in China is caused by the characteristics of uneven space-time distribution, unmatched water and soil resources, low utilization rate, water waste, water source pollution and the like.

The irrigation area is the basis of regional agricultural development, the shortage of water resources becomes an important problem restricting the development of local economy at present, and the utilization of an intelligent channel irrigation flow monitoring system is the key for improving the agricultural water efficiency of the area in terms of water management that seventy percent of agricultural irrigation water in China loses and falls behind. However, irrigation areas have more channels, measuring points are widely distributed, manual reading of data wastes manpower and is low in precision, the current method is to divide a flow measurement range into a limited number of correction sections, the correction sections are respectively corrected by different correction coefficients, and in practical application, due to the fact that too many correction points exist, the problems of low accuracy of measured data, poor real-time performance and incapability of timely alarming exist.

Disclosure of Invention

Therefore, the measuring tank-based detection device and the measuring tank flow detection method provided by the invention overcome the defects of low accuracy of measured data, poor real-time performance and incapability of timely alarming in the prior art.

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

in a first aspect, an embodiment of the present invention provides a measuring tank detection apparatus, including: the device comprises a water measuring tank, an ultrasonic probe matrix, a vertical rod, a controller, a liquid level sensor, a wireless communication module, an intelligent acquisition chip and an alarm;

the water measuring tank is used for connecting a section channel;

the ultrasonic probe matrix is arranged on the outer surfaces of vertical plates on two sides of the water measuring tank and is used for acquiring the sound wave propagation time of different sound channels and the length of a sound wave propagation channel;

the liquid level sensor is arranged in the water measuring tank and used for acquiring and measuring the depth of the water surface in real time;

the controller, the intelligent acquisition chip and the alarm are arranged in the upright rod; the intelligent acquisition chip is used for acquiring the water depth in the measuring flume, the elevation of the bottom plate of the runner of the measuring flume, the width of the measuring flume, the number of submerged runners and the height of the measuring flume; the controller comprises a memory and a processor, the processor calculates the linear average flow velocity and the water tank flow in real time according to the measurement parameters of the ultrasonic probe matrix, the liquid level sensor and the intelligent acquisition chip, and the memory is used for storing the calculation data of the controller;

and the alarm is used for giving an alarm when the controller detects that the probes of the ultrasonic probe matrix are damaged or failed.

In one embodiment, the method further comprises: a terminal APP and a wireless communication module;

the wireless communication module is arranged in the upright rod;

and the terminal APP performs data transmission with the controller through the wireless communication module.

In an embodiment, solar cell panel sets up the top of pole setting, solar cell panel connects ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm supply power for ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm.

In a second aspect, an embodiment of the present invention provides a measuring tank flow rate detection method, based on the measuring tank detection device in the first aspect, the detection method includes: calculating the section average flow velocity of the corresponding sound channel according to the line average flow velocity of different sound channels;

judging whether the channel is full of pipes or not according to the water depth in the flume and the height of the flume, and respectively calculating the total flow of the cross section under the conditions of full pipes and non-full pipes according to the average flow rate of the cross section of each sound channel;

and when the probe of the ultrasonic probe matrix is abnormal, calculating the total flow of the cross section according to the sound channel correlation coefficient.

In one embodiment, the line average flow velocity for the different channels is calculated by the following formula:

Δt＝t₂-t₁

wherein, v_iIs the line average flow velocity, l, over the i channel_iIs the length of the acoustic propagation channel, theta is the acoustic channel angle, t₁Time of forward propagation of sound wave, t₂Is the time of the reverse propagation of the sound wave, delta t is the difference value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the reverse direction,the average value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the upstream direction is shown.

In one embodiment, the average flow velocity of the corresponding cross-section of the different channels is calculated by the following formula:

wherein the content of the first and second substances,is the i-th part cross-sectional average flow velocity, k_iIs the correction coefficient of the ith channel.

In one embodiment, when h_iWhen the pipe is full or more than D, the total flow of the section is calculated by the following formula:

when 0 < h_iWhen < D is not full, the total flow of the cross section is calculated by the following formula:

h_i＝H_i-d

wherein Q is the cross-section calculated flow, h_iFor measuring the depth of water in the water tank H_iThe depth of the water surface measured by the liquid level sensor, d is the elevation of the bottom plate of the runner of the measuring flume, b is the width of the measuring flume, n is the number of the submerged runners, C_iThe coefficient is not full pipe, D is the height of the measuring tank.

In one embodiment, when h_i>When water exists in the channel 0, v for preset times is continuously collected_iIf the number of the alarm signals is 0, alarming; when h is generated_iContinuously collecting v of preset times when no water exists in a channel less than or equal to 0_iAnd if the values are all larger than 0, alarming.

In one embodiment, when the probe discontinuity of the ultrasonic probe matrix is abnormal, the average flow velocity of the i-th part section is calculated according to the following process

The probes of the ultrasonic probe matrix are numbered, and the numbers of the probes are 1, 2, …, i, i +1, …, n-1 and n from the bottom of the equipment along the longitudinal direction;

when the probe numbered 1 fails,

when the probe numbered i fails,

when a probe numbered n fails,

wherein, g_iIs the correlation coefficient of the i channel.

In one embodiment, when a plurality of consecutive probes are abnormal, the missing probe is numbered j, j +1, …, j + n, then:

at this time, the cross section calculates the flow rate

The technical scheme of the invention has the following advantages:

the invention discloses a measuring tank flow detection device and a measuring tank flow detection method, which are based on the ultrasonic probe matrix, so that data can be acquired more accurately, meanwhile, a terminal APP, a wireless communication module and an alarm are adopted to transmit data in real time, and the terminal APP and the alarm are jointly applied to realize the functions of water demand prediction, irrigation decision, quantitative water supply and the like. According to the method provided by the invention, the probe fault and the flow under the normal condition of the ultrasonic probe matrix are respectively calculated, and the flow is calculated under the continuous and discontinuous conditions during the fault, so that the measured data is more accurate, and meanwhile, the data is monitored and alarmed in real time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block diagram illustrating an exemplary measuring tank detecting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a vertical rod of the measuring tank detecting device according to the embodiment of the present invention;

FIG. 3 is a schematic diagram of measurement data of a measuring tank detecting device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating another embodiment of a measuring tank detecting device according to an embodiment of the present invention;

fig. 5 is a flowchart of a specific example of a measuring tank flow detection method according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

An embodiment of the present invention provides a measuring tank detection apparatus, as shown in fig. 1 and 2, including: the device comprises a water measuring tank, an ultrasonic probe matrix, a vertical rod, a controller, a liquid level sensor, a wireless communication module, an intelligent acquisition chip and an alarm; the water measuring tank is used for connecting a section channel; the ultrasonic probe matrix is arranged on the outer surfaces of vertical plates on two sides of the water measuring tank and is used for acquiring the sound wave propagation time of different sound channels and the length of a sound wave propagation channel; the liquid level sensor is arranged in the water measuring tank and used for acquiring and measuring the depth of the water surface in real time; the controller, the intelligent acquisition chip and the alarm are arranged in the upright rod; the intelligent acquisition chip is used for acquiring the water depth in the measuring flume, the elevation of the bottom plate of the runner of the measuring flume, the width of the measuring flume, the number of submerged runners and the height of the measuring flume; as shown in fig. 3, the lower part of the measuring flume is also provided with a thickness, which is not directly a river bed, wherein H is the measured depth of water in the measuring flume, H is the measured depth of water surface, and the depth of water surface is the height from the bottom of the river bed to the surface of a river; the controller comprises a memory and a processor, the processor calculates the linear average flow velocity and the water tank flow in real time according to the measurement parameters of the ultrasonic probe matrix, the liquid level sensor and the intelligent acquisition chip, and the memory is used for storing the calculation data of the controller; and the alarm is used for giving an alarm when the controller detects that the probes of the ultrasonic probe matrix are damaged or failed. By adopting the ultrasonic probe matrix, the data acquisition is more accurate, and the real-time alarm and monitoring are carried out on the thread condition.

In an embodiment of the present invention, as shown in fig. 4, the measuring tank detecting device further includes: a terminal APP and a wireless communication module; the wireless communication module is arranged in the upright rod; the terminal APP performs data transmission with the controller through the wireless communication module; terminal APP can be for cell-phone end or computer end, only with this example, does not use this as the limit, carries out corresponding selection to the terminal according to the actual demand in practical application, through with data go up the demonstration again on the terminal, guarantees channel managers and low reaches water peasant household real-time supervision water level flow information, really realizes the excellent water, meticulous irrigation and drainage.

In an embodiment of the present invention, the measuring tank detecting device further includes: solar cell panel, solar cell panel sets up the top of pole setting, solar cell panel connects ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm are for the power supply of ultrasonic probe matrix, controller, level sensor, wireless communication module, intelligent acquisition chip and alarm, have embodied green and sustainable development's theory.

The measuring tank detection device provided by the embodiment of the invention has the advantages that the data acquisition is more accurate by adopting the ultrasonic probe matrix, meanwhile, the terminal APP, the wireless communication module and the alarm are adopted to transmit the data in real time, and the terminal APP and the alarm are jointly applied to realize the functions of water demand prediction, irrigation decision, quantitative water supply and the like, so that not only is hardware equipment support provided for intelligent water regulation and control and management of a field irrigation unit, but also the detection device provided by the embodiment can be used for remotely monitoring and managing water conditions of channels, irrigation area scheduling, irrigation area management, system management and other functional modules in real time on line.

Example 2

As shown in fig. 5, the measuring tank detection device according to embodiment 1 includes:

step S1: and calculating the section average flow velocity of the corresponding sound channel according to the line average flow velocities of different sound channels.

In the embodiment of the present invention, the measuring tank detecting device in embodiment 1 is used to collect relevant data, and the line average flow velocity of different sound channels is calculated by the following formula:

Δt＝t₂-t₁

wherein, v_iIs the line average flow velocity, l, over the i channel_iIs the length of the acoustic propagation channel, theta is the acoustic channel angle, t₁Time of forward propagation of sound wave, t₂Time (t) of reverse propagation of sound wave₁、t₂All measured values), delta t is the difference value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the upstream direction,the average value of the propagation time of the sound wave in the downstream direction and the propagation time of the sound wave in the upstream direction is shown.

In the embodiment of the invention, the average flow velocity of the corresponding sections of different sound channels is calculated by the following formula:

wherein the content of the first and second substances,is the i-th part cross-sectional average flow velocity, k_iAnd correspondingly selecting a correction coefficient, namely a flow field correction factor, of the ith channel according to actual requirements in practical application.

Step S2: and judging whether the channel is full of pipes or not according to the water depth in the water measuring tank and the height of the water measuring tank, and respectively calculating the total flow of the cross section under the conditions of full pipes and non-full pipes according to the average flow velocity of the cross section of each sound channel.

In the embodiment of the invention, when h_iWhen the pipe is full or more than D, the total flow of the section is calculated by the following formula:

when 0 < h_iWhen < D is not full, the total flow of the cross section is calculated by the following formula:

h_i＝H_i-d

wherein Q is the cross-section calculated flow, h_iFor measuring the depth of water in the water tank H_iThe depth of the water surface measured by the liquid level sensor, d is the elevation of the bottom plate of the runner of the measuring flume, b is the width of the measuring flume, n is the number of the submerged runners, C_iThe coefficient is not full pipe, D is the height of the measuring tank.

In the embodiment of the invention, when h_i>When water exists in the channel 0, v for preset times is continuously collected_iIf the number of the alarm signals is 0, alarming; when h is generated_iContinuously collecting v of preset times when no water exists in a channel less than or equal to 0_iIf the number of the alarm signals is more than 0, alarming is carried out, and the preset times are correspondingly selected according to actual requirements without limitation.

In one embodiment, when there is water in the channel, h_i>At the time of 0, the number of the first,

(5 continuous numbers are all equal to 0), alarming the ith channel fault, and alarming once;

(5 continuous numbers are all equal to 0), alarming for 1 st channel failure, and alarming once;

(5 continuous numbers are all equal to 0), alarming the jth channel fault, and alarming once;

if 2 or more than 2 channels fail, the alarm is given once.

In one embodiment, when there is no water in the channel, if(the number of the continuous 10 is more than 0), the data is abnormal, and the alarm is given once.

Step S3: and when the probe of the ultrasonic probe matrix is abnormal, calculating the total flow of the cross section according to the sound channel correlation coefficient.

In the embodiment of the invention, when the probe of the ultrasonic probe matrix is in discontinuous abnormity, namely under the condition of probe missing or fault, the average flow velocity of the section of the i-th part is calculated according to the following process

The probes of the ultrasonic probe matrix are numbered, and the numbers of the probes are 1, 2, …, i, i +1, …, n-1 and n from the bottom of the equipment along the longitudinal direction;

when the probe numbered 1 fails,

when the probe numbered i fails,

when a probe numbered n fails,

wherein, g_iThe value of the correlation coefficient of the i channel is determined when the equipment leaves a factory, different values are selected according to different equipment, and at the moment, the correlation coefficient is calculated according to the valueAnd according to the actual condition of the channel, bringing the channel into a formula of full pipe or non-full pipe to calculate the flow rate of the section.

In the embodiment of the present invention, when a plurality of consecutive probes are abnormal, and the missing probe is numbered j, j +1, …, j + n, then:

at this time, the cross section calculates the flow rate

According to the measuring flume flow detection method provided by the embodiment of the invention, the section average flow velocity of the corresponding sound channel is calculated according to the line average flow velocity of different sound channels; judging whether the channel is full of pipes or not according to the water depth in the flume and the height of the flume, and respectively calculating the total flow of the cross section under the conditions of full pipes and non-full pipes according to the average flow rate of the cross section of each sound channel; and when the probe of the ultrasonic probe matrix is abnormal, calculating the total flow of the cross section according to the sound channel correlation coefficient. According to the method provided by the embodiment of the invention, the probe fault and the flow under the normal condition of the ultrasonic probe matrix are respectively calculated, and the flow is calculated under the continuous and discontinuous conditions during the fault, so that the measured data is more accurate.

In the embodiment of the invention, the measuring tank can be directly and remotely controlled through the mobile phone APP to monitor and obtain data in real time, and the parameters which can be set through the APP are shown in the following table:

in the embodiment of the invention, automatic control can also be realized, and the specific process is as follows:

during water level control: if H is₀≥H_iThen, the mobile phone APP sends out an alarm: the water level setting value is not reasonable! "; when satisfying (1-w) H_i≤H₀≤(1+w)H_iAnd then, displaying by the mobile phone APP: "Water level set value is reasonable! ", w is an allowable error, and the mobile phone APP is set to be generally 0.05, which is only used as an example, but not limited thereto, and a corresponding numerical value is selected according to actual requirements in actual applications. In the formula, H_iM for real-time monitoring of the target water level; h₀To set the target water level value, m, w are the allowable errors.

In the flow control process: if Q₀≥Q_iThen, the mobile phone APP sends out an alarm: the flow rate setting is unreasonable! "; when (1-w) Q is satisfied_i≤Q₀≤(1+w)Q_iAnd then, displaying by the mobile phone APP: "flow set point reasonable! ", w is the tolerance, and the mobile phone APP is set, generally 0.05. In the formula, Q_iFor monitoring the target flow in real time, m³/s；Q₀To set the target flow rate value, m³And w is an allowable error.

The measuring trough flow detection method provided by the embodiment of the invention ensures that channel managers and downstream water-using farmers monitor water level flow information in real time, and realizes fine water use and fine irrigation and drainage.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.