TWM595752U - Water level monitoring equipment - Google Patents

Abstract

This creation discloses a water level monitoring device for monitoring the water level in a water reservoir, and controlling the start and shut down of a water supply device, which is connected to the water reservoir through an inlet pipe. The water level monitoring equipment includes a water level sensing device, a controller, and a waterless water cutoff sensing device. The water level sensing device is installed in the water reservoir and can detect a plurality of water levels in the water reservoir. The controller is electrically connected to the water level sensing device. The water supply device is started when the water level is low, and the water supply is turned off when the water level is full Device. After the water supply device is started, the waterless water cutoff sensing device can detect the condition of no water or water cutoff and shut off the water supply device in time to avoid damage to the water supply device.

Description

Water level monitoring equipment

This creative department relates to a monitoring device, especially to a water level monitoring device applied to a water storage system.

In order to supply water for residences, water towers are usually installed on the top floor, and motors are used to transport water to the water tower for storage. In order to let managers or residents know the water level in the water tower, a water level sensor is usually installed in the water tower, such as the automatic monitoring device for the water tower disclosed by Chinese Patent CN 203376031U, which includes 11 water level contacts, including 10 water level contacts Point and one overflow contact, the conductive resistance floating with the water level is used to contact one of the 10 water level contacts and the overflow contact respectively, and form a loop with the water level monitoring circuit, so that the indicators corresponding to different water levels light up and Correspondingly turn on the water pump or turn off the water pump, and at the same time, it can also make a warning about the overflow situation of too high water level.

Although the structure disclosed in the above-mentioned patent can perceive different water levels and emit lights to let managers know, however, the above-mentioned patent does not propose a technical solution to the problem that the water pump is idling and damages the water pump due to no water or water outage. In addition, for the problem of overheating or overload of the water pump itself, or the problem of excessively long running time of the water pump due to the reduction of the water pressure of the water supply, the above patent also does not propose a technical solution.

In order to solve the above problems, the purpose of this creation is to provide a water level monitoring device, which includes a water level sensing device and a waterless water cutoff sensing device. The water level sensing device can sense different water levels and display with lights or images, while the waterless water cutoff sensing device can detect the water supply of the water supply device to the accumulator, and can be turned off when there is no water or water cutout Water supply device to protect the water supply device.

In order to achieve one, some or all of the above or other purposes, the present invention provides a water level monitoring device for monitoring the water level in a water reservoir, and controlling the start and shut down of a water supply device, which is The water inlet pipe communicates with the water reservoir. The water level monitoring equipment includes a water level sensing device and a controller. The water level sensing device is disposed in the water reservoir, and includes a sensor and a common electrode. The sensor has a plurality of resistance sensing nodes. The resistance sensing nodes are connected in series in sequence and correspond to a plurality of water levels. The resistance sensing node includes a full water level node and a low water level node, and a gap is formed between the common electrode and the sensor. The controller is electrically connected to the water level sensing device. One of the resistance sensing nodes forms a first electrical circuit with the controller by forming electrical conduction between the water in the water reservoir and the common electrode. It is electrically connected to the controller and controlled by the controller to start or shut down. The first electrical circuit is formed by the common electrode and the low water level node, the controller turns on the water supply device, and the first electrical circuit is formed by the common electrode and the full water level node, the controller turns off the water supply device.

In an embodiment of the present invention, the water level monitoring device of the present invention further includes a waterless water cutoff sensing device, which is disposed in the water reservoir and at the water inlet pipe. The waterless water cutoff sensing device includes a first electrode and a first Two electrodes, the first electrode and the second electrode are provided in the water inlet pipe. When the controller turns on the water supply device, the controller activates the waterless water cutoff sensing device. With the water out of the water inlet pipe, the first electrode and the second electrode form electrical conduction A second electrical circuit is formed with the controller, and by disconnection of the second electrical circuit, the controller turns off the water supply device.

In an embodiment of the present invention, the controller includes a control unit and an inlet water cut-off protection unit. The water inlet cut-off protection unit is electrically connected to the control unit and the water supply device. The control unit sends a control signal to the water inlet The cut-off protection unit, after receiving the control signal, the incoming water cut-off protection unit turns on or off the water supply device.

In an embodiment of the present invention, the controller further includes a water level sensing unit, which is electrically connected to the control unit and the water level sensing device. By the conduction of the first electrical circuit, the water level sensing unit detects Measure the electrical characteristics of the first electrical circuit and send a water level sensing signal to the control unit.

In an embodiment of the present invention, the controller further includes a power supply unit connected to a power supply, the power supply unit and the common electrode and one of the resistance sensing nodes form a first electrical circuit, the first electrode and The second electrode and the power supply unit form a second electrical circuit.

In an embodiment of the invention, the controller further includes a timing unit, the timing unit is electrically connected to the control unit, and the timing unit sends a first time interval signal to the control unit when a first time interval is reached, at When a second time interval is reached, a second time interval signal is sent to the control unit. The first time interval and the second time interval form a plurality of and are continuous and interlaced with each other; the timing unit issues when a third time interval is reached A third time interval signal is sent to the control unit, and a fourth time interval signal is sent to the control unit when a fourth time interval is reached. The third time interval and the fourth time interval respectively form a plurality and are continuous and interlaced with each other.

In an embodiment of the invention, the controller further includes a sensor protection unit, which is electrically connected to the control unit. When the common electrode and the full water level node form a first electrical circuit, the control unit activates the timing unit and receives After the first time interval signal, the control unit sends a disconnection signal to the sensor protection unit. The sensor protection unit receives the disconnection signal and disconnects the first electrical circuit. After the control unit receives the second time interval signal, the control unit transmits A pilot signal is sent to the sensor protection unit. The sensor protection unit receives the pilot signal and conducts the first electrical circuit. When the common electrode and the low water level node form the first electrical circuit, the control unit turns off the timing unit.

In an embodiment of the present invention, the controller further includes a waterless sensing unit, which is electrically connected to the control unit and the waterless water cutoff sensing device. When the second electrical circuit forms an open circuit, the waterless sensing unit transmits a waterless The detection signal is set in the control unit.

In an embodiment of the present invention, the controller further includes a water source tracking unit, which is electrically connected to the control unit, and when the controller receives the waterless detection signal, the control unit starts the water source tracking unit, and the water source tracking unit starts the timing unit And after receiving the third time interval signal, the water source tracking unit sends a start signal to the water cutoff protection unit, the water supply interruption protection unit receives the start signal and starts the water supply device, and the water source tracking unit receives the fourth time interval signal and sends it A shutdown signal is sent to the inlet water cutoff protection unit. The water inlet cutoff protection unit receives the shutdown signal and shuts off the water supply device.

In an embodiment of the present invention, the controller further includes an idling protection unit, which is electrically connected to the control unit. When the control unit receives the waterless detection signal, the idling protection unit transmits a first shutdown control signal to the Water cutoff protection unit to shut off the water supply device.

In an embodiment of the present invention, the controller further includes a timeout tracking protection unit, which is electrically connected to the control unit, and the control unit starts the timeout tracking protection unit when the common electrode and the low water level node form the first electrical circuit , The overtime tracking protection unit activates the timing unit to generate a water supply device running time value. When the water supply device running time value exceeds a preset time value, the overtime tracking protection unit sends a second shut-off control signal to the water supply and flow cutoff Protection unit to shut off the water supply.

In an embodiment of the present invention, the controller further includes an overheat protection unit electrically connected to the control unit. The overheat protection unit detects the temperature of the water supply device when the temperature of the water supply device is detected to exceed a preset temperature At the time of value, the overheating protection unit sends a third shut-off control signal to the inlet water cut-off protection unit to shut off the water supply device.

In an embodiment of the present invention, the controller further includes an overload protection unit electrically connected to the control unit. The overload protection unit detects the current of the water supply device when the current of the water supply device is detected to exceed a preset current When the value is over, the overload protection unit sends a fourth shut-off control signal to the inlet water cut-off protection unit to shut off the water supply device.

In an embodiment of the present invention, the controller further includes a wireless transmission unit, which is connected to an external electronic device by wireless signal transmission.

In an embodiment of the present invention, the controller further includes a display unit electrically connected to the control unit. The control unit transmits a display signal to the display unit, and the display unit displays information corresponding to the display signal.

In an embodiment of the present invention, the controller further includes an input unit electrically connected to the control unit, and the input unit transmits an input signal to the control unit.

In an embodiment of the present invention, the controller further includes an output unit electrically connected to the control unit, and the control unit transmits an output signal to the outside through the output unit.

In an embodiment of the present invention, the controller further includes a memory unit electrically connected to the control unit, and the memory unit stores a plurality of preset values.

In an embodiment of the present invention, the controller further includes a switching unit electrically connected to the control unit, the switching unit transmits an operation mode switching signal to the control unit, and the control unit receives the operation mode switching signal in a manual mode And switch between an automatic mode.

In an embodiment of the invention, the controller further includes a voice unit, which is electrically connected to the control unit. The control unit transmits an audio signal to the voice unit, and the voice unit emits a sound corresponding to the audio signal.

In an embodiment of the invention, the controller further includes an expansion unit, which is electrically connected to the control unit, and the expansion unit can be connected to an external expansion device.

The water level monitoring equipment of this creation can sense multiple water levels inside the water reservoir by setting a water level sensing device and a waterless water cutoff sensing device, and serves as a reference for starting and shutting off the water supply device. When the water level of the accumulator is detected as a low water level, the controller starts to operate the water supply device to supply water to the accumulator, and at the same time activates the waterless water cutoff sensing device to detect whether there is no water and water cutoff. The controller simultaneously detects the temperature and current of the water supply device to prevent the water supply device from overheating or overloading. In addition, the controller also activates the overtime tracking protection function to detect whether the water supply device completes the water supply within a predetermined time and Shut down to prevent damage to the water supply device due to excessive operation time. When there is no water or water outage, the controller turns off the water supply device and starts the function of water source tracking, that is, the water supply device is started at a predetermined time interval to run for a short time, and the water supply status is detected with the waterless water cut detection device. And after detecting the restoration of water supply, the controller restarts the water supply device to supply water. When the water level of the accumulator is detected to be full, the controller stops the operation of the water supply device and turns off the above-mentioned functions of water and water cutoff detection, overheat detection, overload detection and overtime tracking protection, and activates the sensor protection Function, that is, the water level sensing device does not operate at all times, and only supplies power to the common electrode at every predetermined time to detect the water level inside the reservoir, thus preventing the resistance sensing node or the common electrode from being attached by ions in the water Deposition causes a passivation phenomenon of poor electrical conduction.

Please refer to FIG. 1 and FIG. 2, the water level monitoring device 100 of the present invention is used in a water storage device 1000. The water storage device 1000 includes a water storage device 200 and a water supply device 300 in addition to the water level monitoring device 100. The water level monitoring device 100 is provided to connect the water reservoir 200, the water supply device 300 and the home or control center, which detects the water level of the water reservoir 200 and controls the operation of the water supply device 300 accordingly. In this embodiment, the water reservoir 200 may be a cylindrical water storage container, such as a fiberglass or stainless steel water storage tank. In another embodiment, the water reservoir 200 may also be round or square concrete The water tower is not limited, and the water reservoir 200 is installed at a relatively high position, and the water supply device 300 is required to deliver water. In this embodiment, the water supply device 300 may be a water pump, such as a centrifugal water pump, which receives the control signal from the water level monitoring device 100 and pressurizes the water from the water source to the water reservoir 200 after being pressurized.

Please refer to FIG. 2 and FIG. 3, the water level monitoring device 100 includes a water level sensing device 110 and a controller 120. The water level sensing device 110 is disposed in the water reservoir 200 and used to detect the water level in the water reservoir 200. The controller 120 can be installed at any location where personnel can perceive and operate, such as the wall of a house or control center or corridor, etc. The controller 120 can be connected to the controller 120 by a cable, and even the water level sensing device 110 can be wireless The communication mode generates a signal connection with the controller 120. The controller 120 is also electrically or signally connected to the water supply device 300 by cable or wireless transmission. The water level sensing device 110 detects the water level in the water reservoir 200 and transmits a signal to the controller 120, and the controller 120 starts or stops the operation of the water supply device 300 according to the signal of the water level sensing device 110. The structure of the water level monitoring device 100 will be described in detail below.

The water level sensing device 110 includes a sensor 111 and a common electrode 112. The sensor 111 has a plurality of resistance sensing nodes 111a, 111b, 111c, 111d, and 111e connected in series, and the common electrode 112 is connected to a high potential in the controller 120 The sensor 111 is connected to a low potential in the controller 120. The sensor 111 may be a resistance sensor, that is, the entire sensor 111 is a resistor with a predetermined resistance value, which is provided on the sensor 111, and the resistance sensing nodes 111a to 111e are formed in series in series and correspond to a plurality of water levels It includes a full water level node 111a and a low water level node 111e. For example, the resistance sensing node 111a is a full water level node (water volume 100%), the resistance sensing node 111b corresponds to a water level of 80% of the water volume, and the resistance sensing node 111c corresponds to At a water level of 60% of the water volume, the resistance sensing node 111d corresponds to a water level of 40% of the water volume, and the resistance sensing node 111e is a low water level node (water volume of 20%). A gap is formed between the common electrode 112 and the sensor 111. One of the resistance sensing nodes 111a-111e forms a first electrical circuit with the controller 120 through the water in the water reservoir 200 and the common electrode 112 and electrical conduction. Since the current forms the first electrical loop through the path with the smallest resistance value, and the resistance value of the resistor is proportional to its length, the distances (resistance length) between the resistance sensing nodes 111a to 111e and the starting point of the sensor 111 are in order of resistance Sensing node 111a>Resistance sensing node 111b>Resistance sensing node 111c>Resistance sensing node 111d>Resistance sensing node 111e, therefore the resistance values of the respective resistance sensing nodes 111a~111e are in order of resistance sensing node 111a> Resistance sensing node 111b>Resistance sensing node 111c>Resistance sensing node 111d>Resistance sensing node 111e. According to the structure in which the resistance sensing nodes 111a to 111e are arranged in a straight line from top to bottom along the height direction of the water storage 200, when the common electrode 112 is connected to the high potential in the controller 120, the current flows from the common electrode 112 The above-mentioned first electrical circuit is formed through the resistance sensing nodes 111a to 111e (resistance sensing nodes with the smallest resistance value) covered by water and closest to the water surface. As shown in FIG. 3, the water level in the water reservoir 200 covers the resistance sensing nodes 111c, 111d, and 111e, and the common electrode 112 will communicate with the resistance sensing node 111c closest to the water surface to form a first electrical circuit with the controller 120 .

Since the resistance sensing nodes 111a to 111e and the controller 120 form a first electrical circuit with different resistance values, by detecting the electrical characteristics of the first electrical circuit, the water level in the water reservoir 200 can be known, for example, in the potential difference For a fixed-value electrical circuit, different resistance values can result in different current values. By detecting the current value of the first electrical circuit, the change in the water level can be known. In this embodiment, a current sensor, such as a Hall-effect current sensor, may be provided in the controller 120. The controller 120 has different values according to the detected current value, and drives different lamps according to different value ranges. Or display images of different lengths on the display to show changes in the water level in the water reservoir 200.

Please refer to FIG. 3, FIG. 4A and FIG. 4B. The water level monitoring device 100 of the present invention further includes a waterless water cutoff sensing device 130, which is disposed at the water inlet pipe 310 of the water supply device 300 and includes a first electrode 131 And a second electrode 132. The first electrode 131 and the second electrode 132 are provided in the water inlet pipe 310. In this embodiment, as shown in FIG. 4A, the first electrode 131 and the second electrode 132 are both provided in the water inlet pipe 310. Water outlet. However, the positions of the first electrode 131 and the second electrode 132 are not limited to the water outlet, and may be provided inside the water inlet pipe 310 as long as they are located in the section where the water inlet pipe 310 extends into the interior of the accumulator 200.

When the water level sensing device 110 detects that the water level of the water reservoir 200 is a low water level, the controller 120 activates the water supply device 300 to deliver water, and the controller 120 simultaneously activates the waterless water cutoff sensing device 130. An electrode 131 and the second electrode 132 are electrically connected and a second electrical circuit is formed with the controller 120. The state that the second electrical circuit remains conductive indicates that the water inlet pipe 310 normally discharges water, so the water supply device 300 continues to operate to deliver water. When there is no water or water cut, as shown in Figure 4B, for example, the water supply is stopped or the water supply line is damaged to cause water cut, there is no water flow between the first electrode 131 and the second electrode 132, so that The second electrical circuit exhibits an open circuit. At this time, the controller 120 turns off the water supply device 300 to protect the water supply device 300.

In addition, it should be noted that the position of the waterless water cutoff sensing device 130 in the water storage 200 must be higher than the full water level, that is, the position of the resistance sensing node 111a must be higher than that of the water in the water storage 200 After the waterless water cutoff sensing device 130, the second electrical circuit will continue to maintain the conduction state and lose the function of detecting the waterless or water cutoff condition.

The structure of the controller 120 will be described in detail below. Please refer to FIG. 5 and FIG. 6, the controller 120 includes a control unit 121 and an inflow interruption protection unit 122. The inflow interruption protection unit 122 is electrically connected to the control unit 121 and the water supply device 300. The control unit 121 may be a processor chip, which includes a processor and an analog/digital conversion element. The inlet water cutoff protection unit 122 may include a switch element that controls the turning on or off of the water supply device 300 and an external power source. The control unit 121 sends a control signal to the water cut-off protection unit 122. After receiving the control signal, the water cut-off protection unit 122 sends a drive signal to the above-mentioned switching element to turn on or off the power supply of the water supply device 300 by the external power supply.

The controller 120 further includes a water level sensing unit 123, which is electrically connected to the control unit 121 and the water level sensing device 110. Through the conduction of the first electrical circuit, the water level sensing unit 123 detects the first The electrical characteristics of the electrical circuit transmit a water level sensing signal to the control unit 121. In this embodiment, the water level sensing unit 123 may be the above-mentioned current sensor, which is used to detect the current value of the first electrical circuit. After receiving the water level sensing signal, the control unit 120 controls the display unit and the voice unit described later to display the water level or issue an alarm.

The controller 120 further includes a power supply unit 124 connected to an external power supply. The power supply unit 124 and the common electrode 112 and one of the resistance sensing nodes 111a to 111e form the above-mentioned first electrical circuit, and the common electrode 112 is connected At a high potential of the power supply unit 124 (for example, a 12V potential point), the resistance sensing nodes 111a to 111e are connected to a low potential of the power supply unit 124 (for example, a ground potential point). Similarly, the first electrode 131 and the second electrode 132 form the above-mentioned second electrical circuit with the power supply unit 124. For example, the first electrode 131 is connected to the high potential of the power supply unit 124, and the second electrode 132 is connected to the low potential of the power supply unit 124. The power supply unit 124 mainly supplies power required by each unit in the controller 120, and it may be connected to an external power supply, such as a commercial power supply, or a built-in power supply, such as a battery.

The controller 120 further includes a timing unit 125 that is electrically connected to the control unit 121. The timing unit 125 can have a variety of different timing modes, for example, it can be set to send out a time interval signal every time a time interval is reached. For another example, two time intervals with different lengths can be set to alternately and continuously, and a different time interval signal is sent at the end of each time interval. For example, the timing unit 125 sends a first time interval signal to the control unit 121 when it reaches a first time interval, and sends a second time interval signal to the control unit 121 when it reaches a second time interval. The second time intervals are respectively formed in plural and continuous and interlaced with each other. The timing unit 125 sends a third time interval signal to the control unit 121 when it reaches a third time interval, and sends a fourth time interval signal to the control unit 121 when it reaches a fourth time interval, the third time interval and the fourth Time intervals form a plurality of and are continuous and interlaced with each other.

The controller 121 further includes a sensor protection unit 126, which is electrically connected to the control unit 121 and located in the first electrical circuit. When the common electrode 112 and the full-water level node 111a form a first electrical circuit, the control unit 121 activates the timing unit 125, and the control unit 121 can use the timing unit 125 to generate two alternately continuous time intervals to provide a control scheme. The timing unit 125 sends a first time interval signal to the control unit 121 when it reaches a first time interval, and sends a second time interval signal to the control unit 121 when it reaches a second time interval. A plurality of second time intervals are respectively formed and are continuous and interlaced with each other. After receiving the first time interval signal, the control unit 121 transmits a disconnection signal to the sensor protection unit 126. The sensor protection unit 126 receives the disconnection signal and disconnects the first electrical circuit. In this embodiment, the sensor protection unit 126 may be a switching element, which is connected to the common electrode 112 and the power unit 124. After the sensor protection unit 126 receives the disconnection signal, a disconnection is formed between the common electrode 112 and the power unit 124 In this way, the water level sensing device 110 turns off the water level detection function.

After the water level sensing device 110 turns off the water level detection function for a period of time, for example, after turning off the second time interval, the timing unit 125 sends a second time interval signal to the control unit 121, and after the control unit 121 receives the second time interval signal, it transmits A pilot signal is sent to the sensor protection unit 126. The sensor protection unit 126 receives the pilot signal and conducts the first electrical circuit to restore the water level sensing device 110 to the water level detection function. Then, after the water level sensing device 110 detects that the water level passes the first time interval, the timing unit 125 sends the first time interval signal to the control unit 121 again, so that the water level sensing device 110 turns off the water level detection function. In this way, the common electrode 112 and the sensor 111 continue to form positive and negative electrodes in the water, which causes the ions in the water to adhere and deposit on the common electrode 112 or the sensor 111, resulting in a passivation phenomenon of poor electrical conduction. Therefore, the second time interval may be set to be greater than the first time interval, for example, the first time interval is set to one minute, and the second time interval is set to one hour, that is, the water level sensing device 110 detects the water level for one minute every hour.

The controller 120 further includes a waterless sensing unit 127 which is electrically connected to the control unit 121 and the waterless water cutoff sensing device 130. When the second electrical circuit forms an open circuit, the waterless sensing unit 127 transmits a waterless detection signal to the control unit 121. The control unit 121 sends the above-mentioned control signal to the water cutoff protection unit 122 to shut off the water supply device 300.

The controller 120 further includes a water source tracking unit 128, which is electrically connected to the control unit 121. When the control unit 121 receives the no water detection signal, the control unit 121 activates the water source tracking unit 128. The water source tracking unit 128 activates the timing unit 125 and uses the timing unit 125 to generate the above-mentioned two time-span alternately continuous modes to provide a control scheme. The timing unit 125 transmits the third time interval signal to the water source tracking unit 128 after passing the third time interval. After receiving the third time interval signal, the water source tracking unit 128 transmits an activation signal to the water cutoff protection unit 122 to enter the water The cut-off protection unit 122 receives the activation signal and activates the water supply device 300 to operate the above-mentioned fourth time interval. At this time, if the water cutoff condition is not lifted, the water source tracking unit 128 receives the fourth time interval signal sent by the timing unit 125 after running the above-mentioned fourth time interval, and the water source tracking unit 128 sends a shutdown signal to the water inlet interruption protection Unit 122, the water inflow and interruption protection unit 122 receives the shutdown signal and shuts off the water supply device 300, and then passes the third time interval, and the timing unit 125 transmits the third time interval signal to the water source tracking again after the third time interval The unit 128 activates the water supply device 300, and alternately activates and closes the water supply device 300 repeatedly until the water cut-off condition is removed. By repeatedly starting and closing the water supply device 300 in this way, it is possible to detect whether the state of water cut is cancelled.

At this time, if the water cut-off condition is lifted, the water supply device 300 sends water to the water inlet pipe 310 to return the second circuit to conduction, then the waterless sensing unit 127 sends a water supply signal to the control unit 121, and the control unit 121 receives the water supply signal and sends the above control signal to Inlet water cut-off protection unit 122 to start water supply device 300. Since the water supply device 300 is idling during the time of the fourth time interval, in order to protect the water supply device 300, the time of the fourth time interval must be strictly limited, for example, the time of the third time interval is half an hour, and the time of the fourth time interval The time is one minute.

The controller 120 further includes an idling protection unit 129, which is electrically connected to the control unit 121. When the control unit 121 receives the waterless detection signal, the idling protection unit 129 transmits a first shut-off control signal to the water inflow and outflow protection unit 122, to turn off the water supply device 300. However, when the water source tracking unit 128 is activated, the water supply device 300 will idle during the fourth time interval. Therefore, when the water source tracking unit 128 is activated, the idle protection unit 129 stops to maintain the water source tracking unit 128 detection. The function of water cut-off state.

The controller 120 further includes a timeout tracking protection unit 140 which is electrically connected to the control unit 121. The control unit 121 activates the timeout tracking protection unit 140 when the common electrode 112 and the low water level node 111e form a first electrical circuit. When the water level sensing device 110 detects that the water level in the water reservoir 200 is a low water level, that is, the common electrode 112 and the low water level node 111e form a first electrical circuit, the control unit 121 starts the water supply device 300 to operate, and at the same time overtime protection The unit 130 starts the timing unit 125 to start timing, and continuously generates a water supply device operation time value, and continuously transmits the water supply device operation time value to the control unit 121. The control unit 121 compares the operation time value of the water supply device with a preset time value. When the operation time value of the water supply device exceeds the preset time value, the overtime tracking protection unit 140 transmits a second shut-off control signal to the inlet water cut-off protection unit 122 to shut off the water supply device 300. The overtime tracking protection unit 140 is used to prevent the water supply device 300 from overtime operation and premature damage.

The controller 120 further includes an overheat protection unit 141, which is electrically connected to the control unit 121. The overheat protection unit 141 detects the temperature of the water supply device 300. When the temperature of the water supply device 300 is detected to exceed a preset temperature value, the overheat protection unit 141 sends a third shut-off control signal to the inlet water cut-off protection unit 122, To turn off the water supply device 300. In this embodiment, the overheat protection unit 141 may be a temperature relay (including a thermistor), which is provided in the circuit of the water supply device 300 and the external power supply. When the operating temperature of the water supply device 300 is higher than a predetermined value, the temperature relay is turned off The circuit between the water supply device 300 and the external power supply is opened, and the operation of the water supply device 300 is stopped.

The controller 120 further includes an overload protection unit 142 which is electrically connected to the control unit 121. The overload protection unit 142 detects the current of the water supply device 300. When the current of the water supply device 300 is detected to exceed a preset current value, the overload protection unit 142 transmits a fourth shut-off control signal to the inlet water cut-off protection unit 122. To turn off the water supply device 300. In this embodiment, the overload protection unit 132 may be an overload relay, which is provided in the circuit of the water supply device 300 and the external power supply. When the running current of the water supply device 300 is higher than a predetermined value, the overload relay disconnects the water supply device 300 and the external The circuit of the power supply stops the operation of the water supply device 300.

The controller 120 further includes a wireless transmission unit 143, which is electrically connected to the control unit 121. The control unit 121 is connected to an external electronic device by wireless signal transmission through the wireless transmission unit 143, such as WiFi, Bluetooth, etc. Communication protocol for transmission. The external electronic device may be a mobile communication device, such as a smart phone. The user can install the application corresponding to the created water level monitoring device 100 on the smartphone. The control unit 121 transmits the message to the user's smartphone through the wireless transmission unit 143. The user can use the application to generate The interface views the water level information provided by the water level monitoring device 100 and the state of the water storage device 1000. The user can also use the interface to input operation instructions to operate the water storage device 1000.

The controller 120 further includes a display unit 144, which is electrically connected to the control unit 121, and the control unit 121 transmits a display signal to the display unit 144, and the display unit 144 displays information corresponding to the display signal. In this embodiment, the display unit 144 may be a liquid crystal screen, and the water level information detected by the water level sensing device 110 may be displayed on the liquid crystal screen, for example, the water level is represented by an image of varying length, or the water level is directly represented by a number, for example 50%. In addition, when the water supply device 300 stops operating due to water shortage or overheating overload, the display unit 144 may display a fault code for the user to understand the state of the water storage device 1000.

The controller 120 further includes an input unit 145 which is electrically connected to the control unit 121. The input unit 145 transmits an input signal to the control unit 121. The input unit 145 may include a plurality of input keys, such as numeric text input keys, mobile input keys, or in conjunction with the display unit 144, a touch screen is used for display and input purposes, and the digital text input keys and related are displayed on the screen Function keys, etc. The input unit 145 may input set values, such as the above-mentioned first time interval, second time interval, third time interval, and fourth time interval, and a preset time value for the overtime tracking protection unit 140.

The controller 120 further includes an output unit 146 that is electrically connected to the control unit 121. The output unit 146 transmits an output signal to the control unit 121.

The controller 120 further includes a memory unit 147, which is electrically connected to the control unit 121, and the memory unit 147 stores a plurality of preset values and fault codes. The control unit 121 can read the preset value and the fault code from the memory unit 147, and can update the preset value stored in the memory unit 147 according to the input value.

The controller 120 further includes a switching unit 148, which is electrically connected to the control unit 121. The switching unit 121 transmits an operating mode switching signal to the control unit 121. The control unit 121 receives the operating mode switching signal in a manual mode and an automatic mode Switch between. The operation mode of the automatic mode is shown in FIG. 6, while the manual mode is that the water level sensing device 110 keeps monitoring the water level and provides a warning, and the water supply device 300 is started and shut down manually by the user.

The controller 120 further includes a voice unit 149, which is electrically connected to the control unit 121. The control unit 121 transmits an audio signal to the voice unit 149, and the voice unit 149 emits a sound corresponding to the audio signal. In this embodiment, the voice unit 149 may be a speaker. When the water level is full or low, the water level sensing unit 123 sends a water level detection signal to the control unit 121, and the control unit 121 sends an audio signal to the voice unit 149 to make the voice unit 149 emits a warning sound, or in the state of no water and no water, the waterless sensing unit 127 transmits a waterless detection signal to the control unit 121, and the control unit 121 can also send an audio signal to the voice unit 149 to cause the voice unit 149 to issue a warning sound.

The controller 120 further includes an expansion unit 150 which is electrically connected to the control unit 121. The expansion unit 140 can be connected to an external expansion device. In this embodiment, the expansion unit 150 may be an RS485 interface for the water level monitoring device 100 of the present invention to be connected to the Internet of Things (IoT).

Please refer to FIG. 6, which shows the state in which the water level monitoring device 100 of the present invention is on standby in the automatic mode. The water level sensing device 110 detects the water level in the water reservoir 200. When the water level sensing device 110 detects that the water level in the accumulator 200 is a low water level, the controller 120 starts the water supply device 300 to operate, and at the same time, the controller 120 also starts its over-time tracking protection unit 140, overheat protection unit 141 and overload The protection unit 142, if the overtime protection unit 140, the overheat protection unit 141 and the overload protection unit 142 detect an abnormal state exceeding the set value, the controller 120 stops the operation of the water supply device 300 and generates an abnormal record, at this time the display unit 144 displays a fault code for the user to understand the state of the water storage device 1000. If there is a state of no water cutoff, the controller 120 stops the operation of the water supply device 300 and starts the water source tracking unit 128, and regularly detects whether the state of no water cutoff is released according to the set time interval. , The controller 120 resumes the operation of the water supply device 300. When the water level in the accumulator 200 reaches the full water level, the controller 120 stops the operation of the water supply device 300, and closes the functions of the above-mentioned overtime protection unit 140, overheat protection unit 141, and overload protection unit 142, and simultaneously turns on the sensor The function of the protection unit 126 regularly activates the sensor 111 at a set time interval to avoid the problem of the sensor 111 being passivated.

In this way, in addition to sensing the water level of the water reservoir 200 and starting or stopping the water supply device 300, the water level monitoring device 100 of the present invention can also detect the state of no water cutoff and the state of overheating, overload and overtime operation of the water supply device 300. Provide the function of detection and shut off the water supply device 300 in time to protect the water supply device 300 from damage. Moreover, the water level monitoring device 100 of the present invention also has a sensor protection function, which can increase the service life of the sensor.

However, the above are only the preferred embodiments of this creation, which should not be used to limit the scope of the implementation of this creation, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, All still fall within the scope of this creative patent. In addition, any embodiment or scope of patent application of this creation does not need to achieve all the purposes or advantages or features disclosed by the cost creation. In addition, the abstract part and title are only used to assist the search of patent documents, not to limit the scope of the rights of this creation. In addition, the terms "first" and "second" mentioned in this specification or the scope of patent application are only used to name the element or distinguish different embodiments or ranges, not to limit the number of elements. Upper or lower limit.

100: water level monitoring equipment

110: Water level sensing device

111: Perceptron

111a, 111b, 111c, 111d, 111e: resistance sensing node

112: common electrode

120: controller

121: Control unit

122: Inlet water cut-off protection unit

123: Water level sensing unit

124: power supply unit

125: timing unit

126: Sensor protection unit

127: No water sensing unit

128: Water source tracking unit

129: Idling protection unit

130: No water cut-off sensing device

131: First electrode

132: Second electrode

140: Time-out tracking protection unit

141: Overheat protection unit

142: Overload protection unit

143: Wireless transmission unit

144: display unit

145: input unit

146: output unit

147: Memory unit

148: Switching unit

149: voice unit

150: Expansion unit

200: water reservoir

300: Water supply device

310: inlet pipe

1000: water storage equipment

Figure 1 is a three-dimensional schematic diagram of the water level monitoring device created for a water storage device. FIG. 2 is a cross-sectional view of the detailed structure of the water level monitoring device of FIG. 1 used in the water storage device. Figure 3 is a cross-sectional view of the detailed structure of the water level monitoring device of the first creation in Figure 1. Figure 4A is a schematic diagram of the structure of the water-free water cut-off sensing device of the created water level monitoring equipment, which shows the state of normal water supply. Figure 4B is a schematic diagram of the structure of the water-free water cut-off sensing device of the created water level monitoring equipment, which shows the abnormal state of normal water supply. Figure 5 is a system block diagram of the water level monitoring equipment created. Figure 6 is the operation flow chart of the created water level monitoring equipment.

100: water level monitoring equipment

110: Water level sensing device

111: Perceptron

111a, 111b, 111c, 111d, 111e: resistance sensing node

112: common electrode

120: controller

130: No water cut-off sensing device

200: water reservoir

300: Water supply device

310: inlet pipe

1000: water storage equipment

Claims (21)

A water level monitoring device is used to monitor the water level in a water storage device and control the start and shutdown of a water supply device. The water supply device is connected to a water reservoir through an inlet pipe. The water level monitoring device includes: a water level sensor The device is arranged in the water reservoir, and includes a sensor and a common electrode, the sensor has a plurality of resistance sensing nodes, the resistance sensing nodes are connected in series and correspond to a plurality of water levels, the The resistance sensing node includes a full water level node and a low water level node, a gap is formed between the common electrode and the sensor; and a controller electrically connected to the water level sensing device, the resistance sensing nodes One of them forms a first electrical circuit with the controller by forming electrical conduction between the water in the water reservoir and the common electrode, and the water supply device is electrically connected to the controller and is controlled by the controller Control to start or shut down; wherein the first electrical circuit is formed by the common electrode and the low water level node, the controller turns on the water supply device, and the first electrical circuit is formed by the common electrode and the full water level node, The controller turns off the water supply device. The water level monitoring equipment as described in item 1 of the patent application scope further includes a waterless water cutoff sensing device, which is located in the water storage tank, located at the inlet pipe and above the full water level node, the waterless water cutoff sensing The device includes a first electrode and a second electrode. The first electrode and the second electrode are provided in the water inlet pipe. When the controller turns on the water supply device, the controller activates the waterless water cutoff sensing device. In the outlet of the water inlet pipe, the first electrode and the second electrode are electrically connected to form a second electrical circuit with the controller, and by disconnection of the second electrical circuit, the controller turns off the water supply device. The water level monitoring device as described in item 2 of the patent application scope, wherein the controller includes a control unit and an inlet water cut-off protection unit, the inlet water cut-off protection unit is electrically connected to the control unit and the water supply device, The control unit sends a control signal to the inlet water cut-off protection unit. After receiving the control signal, the inlet water cut-off protection unit turns on or off the water supply device. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a water level sensing unit, the water level sensing unit is electrically connected to the control unit and the water level sensing device, by the first When the electrical circuit is turned on, the water level sensing unit detects the electrical characteristics of the first electrical circuit and transmits a water level sensing signal to the control unit. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a power supply unit connected to a power supply, the power supply unit and the common electrode and one of the resistance sensing nodes form the In the first electrical circuit, the first electrode, the second electrode and the power supply unit form the second electrical circuit. The water level monitoring device as described in item 5 of the patent application scope, wherein the controller further includes a timing unit, the timing unit is electrically connected to the control unit, and the timing unit issues a first when it reaches a first time interval A time interval signal is sent to the control unit, and a second time interval signal is sent to the control unit when a second time interval is reached. The first time interval and the second time interval form a plurality of and are continuous and interlaced with each other; The timing unit sends a third time interval signal to the control unit when it reaches a third time interval, and sends a fourth time interval signal to the control unit when it reaches a fourth time interval, the third time interval and the A plurality of fourth time intervals are formed and are continuous and interlaced with each other. The water level monitoring device as described in item 6 of the patent application scope, wherein the controller further includes a sensor protection unit electrically connected to the control unit and located in the first electrical circuit, when the common electrode and the full water level When the node forms the first electrical circuit, the control unit activates the timing unit and after receiving the first time interval signal, the control unit transmits a disconnection signal to the sensor protection unit, and the sensor protection unit receives the disconnection Turn on the signal and disconnect the first electrical circuit. After the control unit receives the second time signal, the control unit transmits a pilot signal to the sensor protection unit. The sensor protection unit receives the pilot signal and turns on the first electrical signal. An electrical circuit, when the common electrode and the low water level node form the first electrical circuit, the control unit turns off the timing unit. The water level monitoring device as described in item 6 of the patent application scope, wherein the controller further includes a waterless sensing unit electrically connected to the control unit and the waterless water cutoff sensing device, when the second electrical circuit forms an open circuit At this time, the water-free sensing unit sends a water-free detection signal to the control unit, and the control unit sends the control signal to the water inflow and cut-off protection unit to shut down the water supply device. The water level monitoring device as described in item 8 of the patent application scope, wherein the controller further includes a water source tracking unit electrically connected to the control unit, and when the control unit receives the waterless detection signal, the control unit is activated The water source tracking unit, the water source tracking unit activates the timing unit and after receiving the third time interval signal, the water source tracking unit transmits an activation signal to the water inflow interruption protection unit, and the water inflow interruption protection unit receives the Activate the signal and activate the water supply device. After receiving the fourth time signal, the water source tracking unit transmits a shutdown signal to the water cutoff protection unit. The water cutoff protection unit receives the shutdown signal and shuts down the water supply device. The water level monitoring device as described in item 8 of the patent application scope, wherein the controller further includes an idling protection unit electrically connected to the control unit, and when the control unit receives the waterless detection signal, the idling protection unit A first shut-off control signal is sent to the water-inlet and flow-off protection unit to shut off the water supply device. The water level monitoring device as described in item 6 of the patent application scope, wherein the controller further includes a timeout tracking protection unit, which is electrically connected to the control unit, and the control unit forms the common electrode and the low water level node The timeout tracking protection unit is activated during the first electrical circuit. The timeout tracking protection unit activates the timing unit to generate the operation time value of the water supply device. When the operation time value of the water supply device exceeds a preset time value, the timeout The tracking protection unit sends a second shut-off control signal to the water inflow and shut-off protection unit to shut off the water supply device. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes an overheat protection unit electrically connected to the control unit, the overheat protection unit detects the temperature of the water supply device when the water supply device When the temperature of is detected to exceed a preset temperature value, the overheating protection unit sends a third shut-off control signal to the inlet water cut-off protection unit to shut off the water supply device. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes an overload protection unit electrically connected to the control unit, the overload protection unit detects the current of the water supply device when the water supply device When the current of is detected to exceed a preset current value, the overload protection unit sends a fourth shut-off control signal to the inlet water cut-off protection unit to shut off the water supply device. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a wireless transmission unit electrically connected to the control unit, and the control unit is connected by wireless signal transmission through the wireless transmission unit In an external electronic device. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a display unit electrically connected to the control unit, the control unit transmits a display signal to the display unit, and the display unit displays a Information corresponding to the displayed signal. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes an input unit electrically connected to the control unit, and the input unit transmits an input signal to the control unit. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes an output unit electrically connected to the control unit, and the control unit transmits an output signal to the outside through the output unit. According to the water level monitoring device described in item 3 of the patent application scope, wherein the controller further includes a memory unit electrically connected to the control unit, the memory unit stores a plurality of preset values and fault codes. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a switching unit electrically connected to the control unit, the switching unit transmits an operation mode switching signal to the control unit, the control unit Receive the operation mode switching signal and switch between a manual mode and an automatic mode. The water level monitoring device as described in item 3 of the patent application scope, wherein the controller further includes a voice unit electrically connected to the control unit, the control unit transmits an audio signal to the voice unit, and the voice unit issues a corresponding The sound of the audio signal. The water level monitoring equipment described in item 3 of the patent application scope, wherein the controller further includes an expansion unit electrically connected to the control unit, and the expansion unit can be connected to an external expansion device.

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