TW201938996A - Cascade ultrasonic water level detection module and water level gauge capable of being disposed in a city to detect a flood at a low cost - Google Patents
Cascade ultrasonic water level detection module and water level gauge capable of being disposed in a city to detect a flood at a low cost Download PDFInfo
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Description
本發明是有關於一種偵測模組及水位計，特別是指一種串接式的超音波水位偵測模組及整合該超音波水位偵測模組的水位計。The invention relates to a detection module and a water level gauge, in particular to a tandem ultrasonic water level detection module and a water level gauge integrated with the ultrasonic water level detection module.
習知的非接觸式水位計有超音波水位計和雷達波水位計二種技術。其中，雷達波水位計相較於超音波水位計具有儀器價格較昂貴且構造更精密的特性，不但使得採用的成本較高，且其後續維修也較為困難。而習知的超音波水位計隨著要量測的液體的水位高度的不同，當該液體的水位高度的變化幅度越大時，習知的超音波水位計的超音波傳感器 (Ultrasonic Transducer)所需要的規格也就隨之更嚴苛，例如需求的功率更大以能量測更遠的距離，如此一來，導致超音波水位計的成本也隨之變高，因此常用於河川或是水庫水位變動的量測。因此，是否具有其他成本更低且能廣為布設用於量測市區淹水之水位計便成為一個待解決的問題。The conventional non-contact water level gauge has two technologies: an ultrasonic water level gauge and a radar wave water level gauge. Among them, compared with ultrasonic water level gauges, radar wave water level gauges have the characteristics of more expensive instruments and more precise structures, which not only makes the cost higher, but also makes subsequent maintenance more difficult. The conventional ultrasonic water level gauge varies with the liquid level of the liquid to be measured. When the liquid level height changes more widely, the conventional ultrasonic water level gauge has an ultrasonic sensor (Ultrasonic Transducer). The required specifications are also more stringent. For example, more power is required to measure longer distances with energy. As a result, the cost of the ultrasonic water level gauge also increases, so it is often used in rivers or reservoirs. Measurement of water level changes. Therefore, whether to have other water level gauges with lower cost and which can be widely deployed for measuring urban flooding has become a problem to be solved.
因此，本發明的目的，即在提供一種成本低廉的串接式超音波水位偵測模組及水位計。Therefore, the object of the present invention is to provide a low-cost serial ultrasonic water level detection module and a water level meter.
於是，根據本發明之一觀點，提供一種水位計，適用於量測一液體的一水面高程，並包含一個超音波水位偵測模組及一個控制模組。Therefore, according to an aspect of the present invention, a water level gauge is provided, which is suitable for measuring a water surface elevation of a liquid, and includes an ultrasonic water level detection module and a control module.
該個超音波水位偵測模組包括N個超音波傳感器，並接收一個控制信號，以控制該M個超音波傳感器朝該液體的液面發射超音波，進而產生M個相關於該水位高度的量測信號，N是大於1的正整數，M是正整數且小於等於N。該N個超音波傳感器分別設置在不同的感測高程，且上下相鄰的兩個超音波傳感器之間的距離相關於該兩個超音波傳感器之其中位置較高者的最大有效量測距離。The ultrasonic water level detection module includes N ultrasonic sensors and receives a control signal to control the M ultrasonic sensors to emit ultrasonic waves toward the liquid surface, thereby generating M related to the water level height. For measurement signals, N is a positive integer greater than 1, and M is a positive integer and less than or equal to N. The N ultrasonic sensors are respectively set at different sensing heights, and the distance between two ultrasonic sensors adjacent to each other is related to the maximum effective measurement distance of the two ultrasonic sensors.
該控制模組電連接該超音波水位偵測模組，以產生該控制信號，並接收該M個量測信號，且根據該M個量測信號之其中一者，決定該液體的該水面高程。The control module is electrically connected to the ultrasonic water level detection module to generate the control signal, receive the M measurement signals, and determine the water surface elevation of the liquid according to one of the M measurement signals. .
在一些實施態樣中，其中，該控制模組包括一個儲存單元、一個通訊單元、及一個處理單元。該儲存單元儲存一個程式碼。該通訊單元適用於與一電腦主機建立連線。該處理單元電連接該儲存單元，以執行該程式碼，進而依照該程式碼設定的時間產生該控制信號，並將對應的該液體的該水面高程儲存至該儲存單元，且同時經由該通訊單元傳送至該電腦主機。In some embodiments, the control module includes a storage unit, a communication unit, and a processing unit. The storage unit stores a code. The communication unit is suitable for establishing a connection with a computer host. The processing unit is electrically connected to the storage unit to execute the code, and then generates the control signal according to the time set by the code, and stores the corresponding water surface elevation of the liquid to the storage unit, and at the same time via the communication unit Send to the host computer.
在一些實施態樣中，其中，該控制模組的該通訊單元以無線網路(Wi-Fi)或行動通訊的技術與該電腦主機建立連線。In some implementation forms, the communication unit of the control module establishes a connection with the computer host using a wireless network (Wi-Fi) or mobile communication technology.
在另一些實施態樣中，其中，該處理單元可以經由該通訊單元接收來自該電腦主機的資料，以更新該儲存單元所儲存的該程式碼。In other embodiments, the processing unit can receive data from the computer host through the communication unit to update the code stored in the storage unit.
在一些實施態樣中，其中，定義該N個超音波傳感器由水平高度最高至最低分別是第1超音波傳感器、第2超音波傳感器…第N超音波傳感器。該第i超音波傳感器與該第i+1超音波傳感器的距離小於等於該第i超音波傳感器所能偵測的最大有效量測距離，i=1、2…N-1。In some implementation forms, wherein the N ultrasonic sensors are defined from the highest to the lowest level to be the first ultrasonic sensor, the second ultrasonic sensor, and the N-th ultrasonic sensor, respectively. The distance between the i-th ultrasonic sensor and the i + 1-th ultrasonic sensor is less than or equal to the maximum effective measurement distance that the i-th ultrasonic sensor can detect, i = 1, 2 ... N-1.
在一些實施態樣中，其中，該控制模組根據該N個量測信號之其中該者，獲得該液體的液面與產生其中該量測信號的該超音波傳感器之間的一液面距離，再計算該超音波傳感器所設置的該感測高程減去該液面距離，而獲得該水面高程。In some embodiments, the control module obtains a liquid level distance between the liquid level of the liquid and the ultrasonic sensor that generates the measurement signal according to one of the N measurement signals. , And then calculate the sensing height set by the ultrasonic sensor minus the liquid surface distance to obtain the water surface elevation.
根據本發明之另一觀點，提供一種超音波水位偵測模組，適用於量測一液體的一水面高程，並包含N個超音波傳感器，且接收一個控制信號，以控制該N個超音波傳感器朝該液體的液面發射超音波，進而產生N個相關於該水面高程的量測信號，N是大於1的正整數。該N個超音波傳感器分別設置在不同的感測高程，且上下相鄰的兩個超音波傳感器之間的距離相關於該兩個超音波傳感器之其中位置較高者的最大有效量測距離。According to another aspect of the present invention, an ultrasonic water level detection module is provided, which is suitable for measuring a water surface elevation of a liquid, includes N ultrasonic sensors, and receives a control signal to control the N ultrasonic waves. The sensor emits ultrasonic waves towards the liquid surface of the liquid, and then generates N measurement signals related to the elevation of the water surface, where N is a positive integer greater than 1. The N ultrasonic sensors are respectively set at different sensing heights, and the distance between two ultrasonic sensors adjacent to each other is related to the maximum effective measurement distance of the two ultrasonic sensors.
在一些實施態樣中，其中，定義該N個超音波傳感器由水平高度最高至最低分別是第1超音波傳感器、第2超音波傳感器…第N超音波傳感器，該第i超音波傳感器與該第i+1超音波傳感器的距離小於等於該第i超音波傳感器所能偵測的最大有效量測距離，i=1、2…N-1。In some implementation forms, wherein the N ultrasonic sensors are defined from the highest to the lowest level to be the first ultrasonic sensor, the second ultrasonic sensor, ... the Nth ultrasonic sensor, the i-th ultrasonic sensor and the The distance of the i + 1th ultrasonic sensor is less than or equal to the maximum effective measurement distance that the ith ultrasonic sensor can detect, i = 1, 2 ... N-1.
本發明的功效在於：藉由該N個超音波傳感器以串接式地分別設置在離該液體的表面(液面)之高度距離不相同的位置，且上下相鄰的兩個超音波傳感器之間的距離相關於該兩個超音波傳感器之其中位置較高者的最大有效量測距離，使得該液體的該水位高度不論如何變化，該N個超音波傳感器之其中一者都能正確量測該液體的表面(液面)與其中該者之間的距離，進而獲得該液體的該水位高度。如此一來，只要採用多個規格與成本較低的超音波傳感器就能取代原本採用單一個規格與成本較高的超音波傳感器，即能達到成本低廉且準確度相同的水位計。The effect of the present invention is that the N ultrasonic sensors are arranged in series at positions with different height distances from the surface (liquid surface) of the liquid, and two ultrasonic sensors adjacent to each other are arranged in series. The distance between them is related to the maximum effective measurement distance of the two of the two ultrasonic sensors, so that no matter how the water level of the liquid changes, one of the N ultrasonic sensors can measure correctly. The distance between the surface (liquid surface) of the liquid and the person therein, thereby obtaining the water level height of the liquid. In this way, as long as the ultrasonic sensor with multiple specifications and lower costs can be used instead of the single ultrasonic sensor with higher specifications and costs, a low-cost and accurate water level gauge can be achieved.
在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.
參閱圖1，本發明水位計1的一個實施例，適用於量測一液體9的一水面高程L0，並包含一組超音波水位偵測模組2及一個控制模組3。該水面高程L0即是該液體的液面91相對於海平面93的高度。Referring to FIG. 1, an embodiment of a water level meter 1 according to the present invention is suitable for measuring a water surface level L0 of a liquid 9 and includes a set of ultrasonic water level detection modules 2 and a control module 3. The water surface elevation L0 is the height of the liquid surface 91 relative to the sea level 93 of the liquid.
該超音波水位偵測模組2包括N個超音波傳感器(Ultrasonic Transducer)，並接收來自該控制模組3的一個控制信號，以控制該N個超音波傳感器朝該液體9的液面91發射超音波，例如同時或逐一發射超音波，並接收其反射波，進而產生N個相關於該水面高程L0的量測信號，N是大於1的正整數。要特別強調的是：該N個超音波傳感器可以採用相同的規格，也可以部分或全部採用不同的規格，都不會限制本發明的技術手段。The ultrasonic water level detection module 2 includes N ultrasonic sensors (Ultrasonic Transducer), and receives a control signal from the control module 3 to control the N ultrasonic sensors to emit toward the liquid level 91 of the liquid 9 Ultrasonic waves, for example, emit ultrasonic waves at the same time or one by one, and receive the reflected waves, thereby generating N measurement signals related to the surface elevation L0, where N is a positive integer greater than 1. It should be particularly emphasized that the N ultrasonic sensors may adopt the same specifications, or may partially or totally adopt different specifications, which will not limit the technical means of the present invention.
該N個超音波傳感器分別設置在不同的感測高程，即離該液體9的液面91之距離不相同的高度位置，且上下相鄰的兩個超音波傳感器之間的距離相關於該兩個超音波傳感器之其中位置較高者的最大有效量測距離。The N ultrasonic sensors are set at different sensing heights, that is, at different height positions from the liquid surface 91 of the liquid 9, and the distance between two ultrasonic sensors adjacent to each other is related to the two The maximum effective measurement distance of one of the ultrasonic sensors.
定義該N個超音波傳感器由水平高度最高至最低分別是第1超音波傳感器、第2超音波傳感器…第N超音波傳感器，在本實施例中，該第i超音波傳感器與該第i+1超音波傳感器的距離等於該第i超音波傳感器所能偵測的最大有效量測距離，i=1、2…N-1。而在其他實施例中，該第i超音波傳感器與該第i+1超音波傳感器的距離也可以小於該第i超音波傳感器所能偵測的最大有效量測距離，但這樣的設計會使得該N個超音波傳感器所能偵測的該液體9的該水面高程L0的變化範圍較小。It is defined that the N ultrasonic sensors are the first ultrasonic sensor, the second ultrasonic sensor, and the nth ultrasonic sensor from the highest to the lowest level. In this embodiment, the i-th ultrasonic sensor and the i + The distance of the 1 ultrasonic sensor is equal to the maximum effective measurement distance that the i-th ultrasonic sensor can detect, i = 1, 2 ... N-1. In other embodiments, the distance between the i-th ultrasonic sensor and the i + 1th ultrasonic sensor may be smaller than the maximum distance that the i-th ultrasonic sensor can detect. The distance can be measured effectively, but such a design will make the range of variation of the water surface elevation L0 of the liquid 9 that can be detected by the N ultrasonic sensors smaller.
為方便說明起見，在本實施例中是以N=3為例作說明，該3個超音波傳感器由水平高度最高至最低分別是第1超音波傳感器21、第2超音波傳感器22、及第3超音波傳感器23，且其設置的位置分別是感測高程L1~L3，其中，感測高程L1~L3即是該第1超音波傳感器21、第2超音波傳感器22、及第3超音波傳感器23分別相對於海平面93的高度。該第1超音波傳感器21與該第2超音波傳感器22的距離等於該第1超音波傳感器21所能偵測的最大有效量測距離ha1。該第2超音波傳感器22與該第3超音波傳感器23的距離等於該第2超音波傳感器22所能偵測的最大有效量測距離ha2。For the convenience of description, in this embodiment, N = 3 is taken as an example for description. The three ultrasonic sensors are the first ultrasonic sensor 21, the second ultrasonic sensor 22 from the highest level to the lowest, and The third ultrasonic sensors 23 are located at sensing heights L1 to L3, and the sensing heights L1 to L3 are the first ultrasonic sensor 21, the second ultrasonic sensor 22, and the third ultrasonic sensor. The heights of the acoustic wave sensors 23 with respect to the sea level 93 are respectively. The distance between the first ultrasonic sensor 21 and the second ultrasonic sensor 22 is equal to the maximum effective measurement distance ha1 that can be detected by the first ultrasonic sensor 21. The distance between the second ultrasonic sensor 22 and the third ultrasonic sensor 23 is equal to the maximum effective measurement distance ha2 that can be detected by the second ultrasonic sensor 22.
該第3超音波傳感器23與地面92(即該液體9的底面)的距離d大於等於該第3超音波傳感器23所能偵測的最大有效量測距離ha3。舉例來說，當該液體9的最低水位高度可能低到零時，則該第3超音波傳感器23與地面92的距離d應小於等於該第3超音波傳感器23所能偵測的最大有效量測距離ha3，就能量測到水位高度等於零時的水面高程L0。而當該液體9的最低水位高度大於零時，例如50公分，則該第3超音波傳感器23與地面92的距離d可以大於該第3超音波傳感器23所能偵測的最大有效量測距離ha3，就能量測到最低水位高度大於零時的水面高程，例如該距離d小於等於該最大量測距離ha3加上最低水位高度(50公分)。The distance d between the third ultrasonic sensor 23 and the ground 92 (ie, the bottom surface of the liquid 9) is greater than or equal to the maximum effective measurement distance ha3 that can be detected by the third ultrasonic sensor 23. For example, when the minimum water level of the liquid 9 may be as low as zero, the distance d between the third ultrasonic sensor 23 and the ground 92 should be less than or equal to the maximum effective amount that the third ultrasonic sensor 23 can detect. Measure the distance ha3, and measure the water surface elevation L0 when the water level is equal to zero. When the minimum water level of the liquid 9 is greater than zero, for example, 50 cm, the distance d between the third ultrasonic sensor 23 and the ground 92 may be greater than the maximum effective measurement distance that the third ultrasonic sensor 23 can detect. ha3, the height of the water surface when the minimum water level height is greater than zero, for example, the distance d is less than or equal to the maximum measurement distance ha3 plus the minimum water level height (50 cm).
該控制模組3包括一個儲存單元32、一個通訊單元33、及一個處理單元31。該儲存單元32儲存一個程式碼。該通訊單元33適用於與一個另一電腦主機(或雲端伺服器) (圖未示)建立連線。該處理單元31電連接該儲存單元32，以讀取並執行該程式碼，進而依照該程式碼設定的時間產生該控制信號，並將對應的該液體9的該水面高程L0儲存至該儲存單元32，或同時經由該通訊單元33傳送至該另一電腦主機(或雲端伺服器)。The control module 3 includes a storage unit 32, a communication unit 33, and a processing unit 31. The storage unit 32 stores a code. The communication unit 33 is adapted to establish a connection with another computer host (or a cloud server) (not shown). The processing unit 31 is electrically connected to the storage unit 32 to read and execute the code, and then generates the control signal according to the time set by the code, and stores the water surface elevation L0 of the corresponding liquid 9 to the storage unit. 32, or transmitted to the other computer host (or cloud server) via the communication unit 33 at the same time.
該控制模組3的該通訊單元33以無線網路(Wi-Fi)或行動通訊(如4G)的技術與該另一電腦主機(或雲端伺服器)建立連線，但不在此限。該處理單元31可以經由該通訊單元33接收來自該另一電腦主機(或雲端伺服器)的資料，以更新該儲存單元32所儲存的該程式碼，例如作韌體更新或監控水位的量測時間的改變等等。舉例來說，該控制模組3及該另一電腦主機(或雲端伺服器)可以是一種Webduino的整合平台，該整合平台包含一個可以連網的Arduino電路板，及一個利用網頁(Web)開發程式的平台。其中，該Arduino電路板相當於該水位計1的該控制模組3，而執行該網頁開發程式的平台相當於前述的該另一電腦主機(或雲端伺服器)。如此一來，該水位計1的體積可以整合地相當小，且耗電與成本都低，相當適合可攜且能夠方便地設置與拆卸。舉例來說，該控制模組3可用電池、家用電源、電腦USB孔等方式連接供電(如1.5V-5V)。The communication unit 33 of the control module 3 uses a wireless network (Wi-Fi) or mobile communication (such as 4G) technology to establish a connection with the other computer host (or a cloud server), but not limited thereto. The processing unit 31 can receive data from the other computer host (or cloud server) via the communication unit 33 to update the code stored in the storage unit 32, for example, to perform firmware update or monitor water level measurement. Change of time and so on. For example, the control module 3 and the other computer host (or cloud server) may be a Webduino integration platform. The integration platform includes an Arduino circuit board that can be connected to the Internet, and a web development Program platform. The Arduino circuit board is equivalent to the control module 3 of the water level gauge 1, and the platform for executing the webpage development program is equivalent to the other computer host (or cloud server) described above. In this way, the volume of the water level gauge 1 can be integrated relatively small, and the power consumption and cost are low, which is quite suitable for portability and can be easily set up and disassembled. For example, the control module 3 can be connected to a power supply (such as 1.5V-5V) by using a battery, a household power source, or a computer USB port.
該處理單元31電連接該超音波水位偵測模組2的該等超音波傳感器，以產生該控制信號，並接收該N個量測信號，且根據該N個量測信號之其中一者，決定該液體9的該水面高程L0。The processing unit 31 is electrically connected to the ultrasonic sensors of the ultrasonic water level detection module 2 to generate the control signal, and receives the N measurement signals, and according to one of the N measurement signals, Determine the water surface elevation L0 of the liquid 9.
舉例來說，圖1的該液體9的液面91與該第1超音波傳感器21之間的距離[ha1+ha2+L]大於該第1超音波傳感器21所能偵測的最大有效量測距離ha1，因此，該第1超音波傳感器21所產生的該量測信號會是一個沒有意義或者預先設定的數值。同樣地，該液體9的液面91與該第2超音波傳感器22之間的距離[ha2+L]大於該第2超音波傳感器22所能偵測的最大有效量測距離ha2，因此，該第2超音波傳感器22所產生的該量測信號也會是該沒有意義或者預先設定的數值。只有該第3超音波傳感器23所產生的該量測信號才會表示一個有意義的數值，例如介於零與該最大有效量測距離ha3之間。當該控制模組3接收該3個量測信號，且判斷該第1超音波傳感器21與該第2超音波傳感器22的該二個量測信號是該沒有意義或者預先設定的數值，且判斷該第3超音波傳感器23的該量測信號是有意義的數值時，該處理單元31根據該第3超音波傳感器23的該量測信號，獲得該液體9的液面91與產生其中該量測信號的該超音波傳感器23之間的一液面距離L，再計算該超音波傳感器所設置的該感測高程L3減去該液面距離L，而獲得該水面高程L0。For example, the distance [ha1 + ha2 + L] between the liquid level 91 of the liquid 9 and the first ultrasonic sensor 21 in FIG. 1 is greater than the maximum effective measurement that the first ultrasonic sensor 21 can detect. The distance ha1, therefore, the measurement signal generated by the first ultrasonic sensor 21 will be a meaningless or preset value. Similarly, the distance [ha2 + L] between the liquid level 91 of the liquid 9 and the second ultrasonic sensor 22 is greater than the maximum effective measurement distance ha2 that the second ultrasonic sensor 22 can detect. Therefore, the The measurement signal generated by the second ultrasonic sensor 22 will also be a meaningless or preset value. Only the measurement signal generated by the third ultrasonic sensor 23 will represent a meaningful value, such as between zero and the maximum effective measurement distance ha3. When the control module 3 receives the three measurement signals and judges that the two measurement signals of the first ultrasonic sensor 21 and the second ultrasonic sensor 22 are the meaningless or preset values, and judges When the measurement signal of the third ultrasonic sensor 23 is a meaningful value, the processing unit 31 obtains the liquid level 91 of the liquid 9 and generates the measurement therein based on the measurement signal of the third ultrasonic sensor 23 A liquid level distance L between the ultrasonic sensors 23 of the signal is calculated by subtracting the liquid level distance L from the sensing height L3 set by the ultrasonic sensor to obtain the water surface level L0.
要特別補充說明的是：該量測信號可以是包含該超音波傳感器所發射的超音波與所接收的反射波之間的時間差，也可以是包含該超音波傳感器所偵測到的物體距離。該控制模組3的該處理單元31都能根據該量測信號而正確地獲得該液面距離L，例如將時間差乘以超音波的傳播速度而得到對應的距離。It should be particularly supplemented that the measurement signal may include the time difference between the ultrasonic wave emitted by the ultrasonic sensor and the received reflected wave, or the distance between objects detected by the ultrasonic sensor. The processing unit 31 of the control module 3 can correctly obtain the liquid surface distance L according to the measurement signal, for example, multiplying the time difference by the propagation speed of the ultrasonic wave to obtain a corresponding distance.
此外，在本實施例中，舉例來說，該N個超音波傳感器接收該控制信號以產生該N個量測信號，例如N=3。而在其他實施例中，該控制模組3的該處理單元31也可以藉由該控制信號輪流控制該N個超音波傳感器逐一發射超音波，以產生M個量測信號，M是正整數且小於等於N。舉例來說，該三個超音波傳感器可以依照其在空間中的位置由高至低或由低至高或任意順序，逐一接收該控制信號而發射超音波，以對應產生該量測信號，當該處理單元31在接收到該M個量測信號之其中一者，而決定出該水面高程時，即不再產生該控制信號，使得其餘未發射超音波的超音波傳感器保持不發射超音波，而能達到省電的功效。In addition, in this embodiment, for example, the N ultrasonic sensors receive the control signal to generate the N measurement signals, for example, N = 3. In other embodiments, the processing unit 31 of the control module 3 may also control the N ultrasonic sensors to emit ultrasonic waves one by one by using the control signal to generate M measurement signals, where M is a positive integer and less than Is equal to N. For example, the three ultrasonic sensors may receive the control signals one by one in accordance with their position in space from high to low or low to high or any order, so as to correspondingly generate the measurement signal. When the processing unit 31 receives one of the M measurement signals and determines the water surface elevation, the control signal is no longer generated, so that the remaining ultrasonic sensors that do not emit ultrasonic waves do not emit ultrasonic waves, and Can achieve the effect of power saving.
再參閱圖2，圖2的該液體9的液面91與該第1超音波傳感器21之間的距離ha1+L大於該第1超音波傳感器21所能偵測的最大有效量測距離ha1，同樣地，該第1超音波傳感器21所產生的該量測信號會是一個沒有意義或者預先設定的數值。由於該液體9已將該第3超音波傳感器23淹沒，因此，該第3超音波傳感器23與地面92的距離d已大於該第3超音波傳感器23所能偵測的最大有效量測距離ha3，同樣地，該第3超音波傳感器23所產生的該量測信號也會是該沒有意義或者預先設定的數值。只有該第2超音波傳感器22所產生的該量測信號才會表示一個有意義的數值，例如介於零與該最大有效量測距離ha2之間。Referring again to FIG. 2, the distance ha1 + L between the liquid surface 91 of the liquid 9 and the first ultrasonic sensor 21 in FIG. 2 is greater than the maximum effective measurement distance ha1 that the first ultrasonic sensor 21 can detect. Similarly, the measurement signal generated by the first ultrasonic sensor 21 will be a meaningless or preset value. Since the liquid 9 has submerged the third ultrasonic sensor 23, the distance d between the third ultrasonic sensor 23 and the ground 92 is greater than the maximum effective measurement distance ha3 that the third ultrasonic sensor 23 can detect. Similarly, the measurement signal generated by the third ultrasonic sensor 23 will also be a meaningless or preset value. Only the measurement signal generated by the second ultrasonic sensor 22 will represent a meaningful value, such as between zero and the maximum effective measurement distance ha2.
在圖2的例子中，該控制模組3的該處理單元31同樣地會以判斷該第2超音波傳感器22的該量測信號是有意義的數值，來據以計算該水面高程L0。但若圖2中的該第3超音波傳感器23與地面92之間的距離小於該第3超音波傳感器23所能偵測的該最大有效量測距離，即d＜ha3，使得該第3超音波傳感器23的該量測信號也會是一個有意義的數值，即介於零與該最大有效量測距離ha3之間。此時，因為該第2超音波傳感器22及該第3超音波傳感器23的該量測信號都是有意義的數值，該控制模組3的該處理單元31會以根據設置的位置較高的超音波傳感器(即第2超音波傳感器22)的量測信號，計算該水面高程L0。或者，因為該水面高程L0(或水位高度)的變化需要時間才會發生，該處理單元31可以以短時間內沒有發生變化的該量測信號排除的方式，判斷要以根據該第2超音波傳感器22的該量測信號，計算該水面高程L0。In the example of FIG. 2, the processing unit 31 of the control module 3 similarly determines that the measurement signal of the second ultrasonic sensor 22 is a meaningful value to calculate the water surface elevation L0. However, if the distance between the third ultrasonic sensor 23 and the ground 92 in FIG. 2 is smaller than the maximum effective measurement distance that can be detected by the third ultrasonic sensor 23, that is, d <ha3, the third ultrasonic sensor 23 The measurement signal of the sonic sensor 23 will also be a meaningful value, that is, between zero and the maximum effective measurement distance ha3. At this time, because the measurement signals of the second ultrasonic sensor 22 and the third ultrasonic sensor 23 are meaningful values, the processing unit 31 of the control module 3 will use a higher ultrasonic wave according to the set position. The measurement signal from the sonic sensor (ie, the second ultrasonic sensor 22) calculates the water surface elevation L0. Alternatively, because the change in the water surface elevation L0 (or water level height) takes time to occur, the processing unit 31 may determine in accordance with the second ultrasonic wave that the measurement signal has not changed in a short period of time to determine The measurement signal from the sensor 22 calculates the water surface elevation L0.
另外要特別補充說明的是：該處理單元31或是該另一電腦主機在獲得該水面高程L0之後，可以藉由該水位計1所設置的地面高程LG，計算該水面高程L0減去該地面高程LG，即能獲得該液體的水位高度h1或h2。也就是說，該水位計1及該超音波水位偵測模組2能夠偵測該液體的該水面高程L0，同樣地，也能偵測該水位高度h1或h2。In addition, it should be particularly added that after the processing unit 31 or the other computer host obtains the water surface elevation L0, it can calculate the water surface elevation L0 minus the ground by using the ground elevation LG set by the water level gauge 1. The elevation LG is the height h1 or h2 of the liquid. That is, the water level gauge 1 and the ultrasonic water level detection module 2 can detect the water surface elevation L0 of the liquid, and similarly, can also detect the water level height h1 or h2.
再者，該N個超音波傳感器有可能會被該液體淹沒，因此要採用防水的機構設計，才能在該液體的水面高程L0 (或水位高度)變化時，例如被該液體淹沒又再露出液體表面之後，還能持續正常地運作。再者，該超音波水位偵測模組2的該等超音波傳感器並不一定要朝該液體作垂直方向地發射超音波，也可以保持相對垂直方向有些許的角度(如15度)，此角度是由該等超音波傳感器的設計規格而定，並不會影響該超音波水位偵測模組2的量測結果。同樣地，每一超音波傳感器所能偵測的最大有效量測距離，也會因為其功率的不同，而有其對應的數值，這同樣可以參考其設計規格而知。Furthermore, the N ultrasonic sensors may be submerged by the liquid. Therefore, a waterproof mechanism design is needed to change the water surface level L0 (or water level height) of the liquid, such as being submerged by the liquid and then exposing the liquid. After the surface, it continues to function normally. Furthermore, the ultrasonic sensors of the ultrasonic water level detection module 2 do not necessarily emit ultrasonic waves in a vertical direction toward the liquid, and can also maintain a slight angle (such as 15 degrees) relative to the vertical direction. The angle is determined by the design specifications of the ultrasonic sensors and does not affect the measurement results of the ultrasonic water level detection module 2. Similarly, the maximum effective measurement distance that each ultrasonic sensor can detect will also have its corresponding value because of its different power, which can also be known by referring to its design specifications.
此外，本發明所述的串接式超音波水位偵測模組2是指該超音波水位偵測模組2所包含的該N個超音波傳感器，利用在空間位置上的不同，以串接的方式量測不同範圍的水位高度，使得整體能夠量測的水面高程L0 (或水位高度)的範圍變大。雖然圖1與圖2的該等超音波傳感器是以串接的方式表示電連接，但該等超音波傳感器也可以將其量測信號直接傳送至該控制模組3，也不會影響該水位計1的運作。In addition, the tandem ultrasonic water level detection module 2 according to the present invention refers to the N ultrasonic sensors included in the ultrasonic water level detection module 2 and utilizes the difference in spatial position to connect in series. The method of measuring the water level height in different ranges makes the range of the water surface elevation L0 (or water level height) that can be measured as a whole larger. Although the ultrasonic sensors of FIG. 1 and FIG. 2 are electrically connected in series, the ultrasonic sensors can also directly transmit their measurement signals to the control module 3 without affecting the water level. Count 1's operation.
綜上所述，藉由該超音波水位偵測模組以串接式地設置該等超音波傳感器及該控制模組可以藉由另一電腦主機(或雲端伺服器)修改其程式或韌體，該水位計可以具備體積小且成本低廉的特性，不但可以方便地設置，更可以方便地拆卸移置他處，使得該水位計可以廣泛地應用於企業防災或住家監測淹水等的課題上，故確實能達成本發明的目的。In summary, by using the ultrasonic water level detection module to set the ultrasonic sensors and the control module in series, it is possible to modify its program or firmware by another computer host (or cloud server). The water level gauge can have the characteristics of small size and low cost, not only can be conveniently set up, but also can be easily disassembled and moved elsewhere, so that the water level gauge can be widely used in issues such as corporate disaster prevention or home monitoring flooding, etc. , So it can indeed achieve the purpose of cost invention.
惟以上所述者，僅為本發明的實施例而已，當不能以此限定本發明實施的範圍，凡是依本發明申請專利範圍及專利說明書內容所作的簡單的等效變化與修飾，皆仍屬本發明專利涵蓋的範圍內。However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.
1‧‧‧水位計1‧‧‧ water level gauge
2‧‧‧超音波水位偵測模組2‧‧‧ Ultrasonic Water Level Detection Module
21‧‧‧第1超音波傳感器21‧‧‧The first ultrasonic sensor
22‧‧‧第2超音波傳感器22‧‧‧ 2nd ultrasonic sensor
23‧‧‧第3超音波傳感器23‧‧‧3rd Ultrasonic Sensor
3‧‧‧控制模組3‧‧‧Control Module
31‧‧‧處理單元31‧‧‧processing unit
32‧‧‧儲存單元32‧‧‧Storage unit
33‧‧‧通訊單元33‧‧‧Communication Unit
9‧‧‧液體9‧‧‧ liquid
91‧‧‧液面91‧‧‧Liquid level
92‧‧‧地面92‧‧‧ Ground
93‧‧‧海平面93‧‧‧Sea level
ha1‧‧‧最大有效量測距離ha1‧‧‧Maximum effective measurement distance
ha2‧‧‧最大有效量測距離ha2‧‧‧Maximum effective measurement distance
ha3‧‧‧最大有效量測距離ha3‧‧‧Maximum effective measurement distance
d‧‧‧距離d‧‧‧distance
h1‧‧‧水位高度h1‧‧‧water level
h2‧‧‧水位高度h2‧‧‧water level
L0‧‧‧水面高程L0‧‧‧ Surface elevation
L1‧‧‧感測高程L1‧‧‧sensing elevation
L2‧‧‧感測高程L2‧‧‧sensing elevation
L3‧‧‧感測高程L3‧‧‧sensing elevation
LG‧‧‧地面高程LG‧‧‧ ground elevation
L‧‧‧液面距離L‧‧‧Liquid level distance
本發明的其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是一個示意圖，說明本發明水位計的一個實施例；及 圖2是一個示意圖，說明該實施例的液體的水位在另一個高度的態樣。Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, wherein: FIG. 1 is a schematic diagram illustrating an embodiment of the water level gauge of the present invention; and FIG. 2 is a schematic diagram illustrating the implementation Example of the liquid level at another height.
Claims (8)
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