CN110857212B - Intelligent water injection device and method - Google Patents
Intelligent water injection device and method Download PDFInfo
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- CN110857212B CN110857212B CN201810968155.2A CN201810968155A CN110857212B CN 110857212 B CN110857212 B CN 110857212B CN 201810968155 A CN201810968155 A CN 201810968155A CN 110857212 B CN110857212 B CN 110857212B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0041—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes with provisions for metering the liquid to be dispensed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0058—Details
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Abstract
The invention discloses an intelligent water injection device and method, which comprises a container placing area, an infrared sensor, an ultrasonic sensor and a controller, wherein the container placing area is provided with a water inlet and a water outlet; the container placement area comprises a table top for carrying a container and a top surface opposite the table top; the infrared sensor is arranged on the top surface, and is used for performing infrared scanning on the table top and the container so as to obtain the height h from the inner bottom of the container to the upper edge of the container; the ultrasonic sensor is arranged below the table top and emits ultrasonic waves to a container placed on the table top so as to obtain the liquid level d in the container; and when the controller detects that h-d is less than or equal to a set threshold value, the water inlet pipe is controlled to stop injecting water. According to the invention, the infrared sensor is arranged above the container, and the height of the inner cavity of the container can be effectively measured by using an infrared scanning technology; through laying ultrasonic sensor in the below of container, can avoid water injection in-process water injection rivers to the influence that liquid level detected to accurately control water injection volume, reach the anti-overflow purpose.
Description
Technical Field
The invention belongs to the technical field of water injection equipment, and particularly relates to a device capable of automatically controlling water injection quantity according to the height of a container and a water injection control method.
Background
In daily life, people often encounter the problems that when a container such as a cup is used for receiving water on water injection equipment (such as a water dispenser and the like), water overflows from the cup due to distraction or misjudgment and the like, the environment is polluted, and water resources are wasted.
In order to solve the common problems in the life, some water filling equipment at present is additionally provided with a detection device for detecting the height of the container and the liquid level in the container. For example, chinese patent application No. 201610109448.6 discloses an intelligent automatic water injection system and method, as shown in fig. 1, comprising an infrared transmitter 10, a plurality of infrared receivers 12 and an ultrasonic sensor 20. Wherein, infrared transmitter 10 and infrared receiver 12 are used for detecting the container height, are relative position relation that sets up, and the middle container is reserved and is placed the region, and a plurality of infrared receiver 12 are arranged from low to high in proper order. When the container 30 is placed between the infrared transmitter 10 and the infrared receiver 12, the signal received by the infrared receiver 12 changes due to being shielded by the container 30, and the height of the container 30 can be determined by detecting the change. The ultrasonic sensor 20 is used for detecting the liquid level in the container 30, and is disposed directly above the container placement region. When the liquid level is equal to the container height, the automatic control faucet switch 40 is turned off or the prompting device 50 is controlled to send a prompting signal to prevent the liquid from overflowing the container 30.
The above-mentioned detection device that current water injection equipment used has following drawback:
1. when the height of the container is measured, a plurality of infrared receivers are required, not only is the structural design complicated, and the assembly difficulty of the device is increased, but also the distance between the infrared receivers determines the measurement accuracy of the height of the container, and the more the infrared receivers are used, the higher the measurement accuracy of the height of the container is, and correspondingly, the more the structure and the assembly of the device are complicated. Therefore, the number of infrared receivers used is not so large in view of various aspects of structural design, production cost, and the like, which results in that the accuracy of measuring the height of the container is not high.
2. Due to the limitation of the arrangement of the infrared emitter and the infrared receiver, the existing detection device can only measure the height from the outer bottom of the container to the upper edge of the container (namely, the outer height of the container), but cannot measure the height from the inner bottom of the container to the upper edge of the container (namely, the height of an inner cavity which can actually contain liquid in the container). However, the bottom thicknesses of different containers are different, and even if the containers with the same outer heights are used, the heights of inner cavities of the containers are different, so that the outer heights of the containers are compared with the detected liquid level height to judge whether the containers are filled with liquid accurately, a large margin needs to be preset, and when the difference between the liquid level height and the outer height of the containers is large, the water filling process needs to be finished, so that the liquid cannot overflow. Obviously, the control effect is not ideal.
3. In order to detect the level of liquid in the tank in real time, the ultrasonic sensor must be in operation during the discharge of the faucet. Because the ultrasonic sensor is positioned above the container, in the process of injecting water flow into the container, the water flow can shield the transmission path of ultrasonic waves, so that the measurement precision of the liquid level is greatly influenced, and the phenomenon of liquid overflow cannot be completely avoided.
Disclosure of Invention
The invention aims to provide an intelligent water injection device and method, which can not only realize effective measurement on the height of an inner cavity of a container, but also improve the accuracy of liquid level detection in the water injection process.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an intelligent water injection device in one aspect, which comprises a container placing area, an infrared sensor, an ultrasonic sensor and a controller, wherein the container placing area is provided with a water inlet; wherein the container placement area comprises a table top for carrying a container and a top surface in a relative positional relationship with the table top; the infrared sensor is arranged on the top surface of the container placing area, and is used for performing infrared scanning on the table surface and a container placed on the table surface so as to obtain the height h from the inner bottom of the container to the upper edge of the container; the ultrasonic sensor is arranged below the table top and emits ultrasonic waves to a container placed on the table top so as to obtain the liquid level d in the container; and when the controller detects that h-d is less than or equal to a set threshold value, the controller controls the water outlet pipe to stop injecting water.
Further, the infrared sensor receives infrared rays reflected back by the table top and the container in the process of performing infrared scanning on the table top and the container placed on the table top, generates a plurality of measuring distances according to the reflected infrared rays, and sends the measuring distances to the controller; the controller acquires the distance H from the table top to the infrared sensor according to the measurement distance fed back by the infrared sensor Table top Distance H from inner bottom of container to infrared sensor Inner sole And the distance H from the upper edge of the container to the infrared sensor Upper edge of the container And further calculating the height H = H from the inner bottom of the container to the upper edge of the container Inner sole -H Upper edge of the container 。
Preferably, the controller selects the measuring distance with the largest value as the distance H from the table top to the infrared sensor according to the measuring distance fed back by the infrared sensor Table top Selecting the distance measured next to the maximum value as the distance H from the bottom of the container to the infrared sensor Inner sole Selecting the measuring distance with the smallest value as the distance H from the upper edge of the container to the infrared sensor Upper edge of the container 。
Further, an instruction input unit is further arranged on the intelligent water injection device and connected with the controller; when the controller receives a water injection instruction through the instruction input unit, the controller firstly controls the water outlet pipe to keep a closed state, starts the infrared sensor to detect the height h from the inner bottom of the container to the upper edge of the container, controls the water outlet pipe to be opened after the detection is finished, injects water into the container, and starts the ultrasonic sensor to detect the liquid level d in the container. According to the invention, the water injection process is executed after the height of the container is measured, so that the influence of the water injection flow on the measurement precision of the height of the container can be avoided, and the accuracy of the height detection of the container is improved.
In order to achieve accurate scanning of the table and container, the infrared sensor may be mounted on the top surface of the container placement area in one of the following ways:
(1) Installing a track on the top surface of the container placing area, installing the infrared sensor on the track, arranging a power mechanism in the intelligent water injection device, and controlling the power mechanism to drive the infrared sensor to move along the track by the controller so as to perform infrared scanning on the table top and the container placed on the table top;
(2) A rotating mechanism is arranged on the top surface of the container placing area, the infrared sensor is arranged on the rotating mechanism, and the controller controls the rotating mechanism to drive the infrared sensor to rotate within a certain angle range so as to perform infrared scanning on the table surface and the container placed on the table surface;
(3) The infrared sensor is fixedly mounted on the top surface of the container placement area and emits an infrared beam that covers at least a portion of the container and the countertop.
Further, the ultrasonic sensor is an ultrasonic ranging sensor, and transmits ultrasonic waves and receives reflected ultrasonic waves formed after the ultrasonic waves are reflected when the ultrasonic waves are transmitted to the boundary surfaces of different media; the ultrasonic sensor forms measurement data according to the received reflected ultrasonic waves, the measurement data are sent to the controller, the distance D from the top surface of the liquid in the container to the ultrasonic sensor is calculated, and the liquid level height D in the container is calculated through the following formula: d = D-D Table top -H Bottom thickness ；H Bottom thickness =H Table top -H Inner sole (ii) a Wherein D is Table top The distance from the upper surface of the table top to the ultrasonic sensor is a known quantity; h Bottom thickness The thickness of the lower bottom of the container.
Preferably, the ultrasonic sensor is preferably located right below the water outlet of the water outlet pipe, so as to ensure that no matter where the container is placed on the table top, as long as the water injection flow can flow into the container, the ultrasonic sensor is necessarily located below the container, but not staggered with the container, and thus the accuracy of liquid level detection can be improved.
In order to reduce the excessive attenuation of the energy of the ultrasonic wave in the transmission process as much as possible, the through hole is formed in the area, on the table top, where the container is placed, and the ultrasonic wave emitted by the ultrasonic sensor is transmitted to the container through the through hole, so that the number of interfaces encountered in the transmission process of the ultrasonic wave can be reduced, and the reliability of liquid level height measurement is improved.
The invention also provides an intelligent water injection method in another aspect, which comprises the following steps: an infrared sensor is arranged above a table top for bearing a container, and an ultrasonic sensor is arranged below the table top; utilizing an infrared sensor to perform infrared scanning on the table top and the container placed on the table top, and measuring the height h from the inner bottom of the container to the upper edge of the container; transmitting ultrasonic waves to a container placed on the table top by using an ultrasonic sensor, and measuring the liquid level d in the container; and stopping water injection when the h-d is less than or equal to a set threshold value, so as to prevent the liquid from overflowing.
Furthermore, the infrared sensor receives infrared rays reflected by the table top and the container in the process of performing infrared scanning on the table top and the container placed on the table top, and the distance H from the table top to the infrared sensor is calculated according to the reflected infrared rays Table top Distance H from inner bottom of container to infrared sensor Inner sole And the distance H from the upper edge of the container to the infrared sensor Upper edge of the container Further, the height H = H from the inner bottom of the container to the upper edge of the container is calculated Inner sole -H Upper edge of the container 。
Preferably, a plurality of measuring distances are calculated according to the reflected infrared rays, and the measuring distance with the largest value is selected as the distance H from the table top to the infrared sensor Table top Selecting the distance measured next to the maximum value as the distance H from the bottom of the container to the infrared sensor Inner sole Selecting the measuring distance with the smallest value as the distance H from the upper edge of the container to the infrared sensor Upper edge of the container 。
Preferably, in the process of measuring the liquid level d in the container, the ultrasonic sensor is used for emitting ultrasonic waves to the container placed on the table top, and the ultrasonic waves are reflected when being transmitted to the interface surface of different media to form reflected ultrasonic waves and are received by the ultrasonic sensor; the ultrasonic sensor forms measurement data according to the received reflected ultrasonic waves; and calculating the distance D from the top surface of the liquid in the container to the ultrasonic sensor according to the measurement data, and calculating the liquid level height D in the container by the following formula: d = D-D Table top -H Bottom thickness ；H Bottom thickness =H Table top -H Inner sole (ii) a Wherein D is Table top The distance from the upper surface of the table top to the ultrasonic sensor is a known quantity; h Thickness of bottom The thickness of the lower bottom of the container.
In order to improve the accuracy of the measurement result, the infrared scanning process is executed before the water injection is started, and the related parameters of the container are calculated; then, the water outlet pipe is opened to fill water into the container, and the ultrasonic sensor is opened to detect the liquid level in the container during water filling.
Compared with the prior art, the invention has the advantages and positive effects that: according to the invention, the infrared sensor is arranged above the container, and the outer height and the inner cavity height of the container can be effectively measured by using an infrared scanning technology; through laying ultrasonic sensor in the below of container, can avoid water injection in-process water injection rivers to liquid level detection's influence, when improving the level measurement accuracy, through highly contrasting the liquid level in the container with the inner chamber of container, can control the water injection volume more accurately from this, the condition of having really stopped liquid excessive container takes place, has improved automatic water injection device's use and has experienced.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of an existing automatic water injection system;
FIG. 2 is a schematic structural diagram of a first embodiment of an intelligent water injection apparatus provided by the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the intelligent water injection apparatus provided by the present invention;
FIG. 4 is a schematic structural diagram of a third embodiment of the intelligent water injection apparatus provided by the invention;
FIG. 5 is a control flow diagram of an embodiment of the intelligent water-filling method of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 2, the intelligent water injection device of the present embodiment includes a container placement area 100, a water outlet pipe 110, an infrared sensor 112, an ultrasonic sensor 113, a controller (not shown in the figure), and other main components. The container placement area 100 is used for placing a liquid container 111, and includes a bottom surface 101, a top surface 102, left and right side surfaces 103, 104, and an inner stop surface 105. The bottom surface 101 forms a table for carrying the container 111 and the surface is preferably designed to be horizontal to facilitate accurate measurement of the height of the container and the level of the liquid in the container. The water outlet pipe 110 is installed on the inner blocking surface 105 and is located at the upper position, and the area of the table top 101 facing the water outlet is the central area for placing the container 111. A valve, such as an electromagnetic valve, is installed on the water outlet pipe 110, and the controller controls the valve to open or close to control the start and end of the water filling process.
The ultrasonic sensor 113 is installed below the table top 101, and the distance from the bottom of the table top 101 should be greater than the blind zone distance of the ultrasonic sensor. Because the ultrasonic sensor can not measure accurate data in the blind zone distance, the object to be measured should avoid the distance. In this embodiment, the ultrasonic sensor 113 is preferably installed at a position opposite to the water outlet pipe 110 in order to ensure that the ultrasonic waves emitted by the ultrasonic sensor 113 can be vertically transmitted to the container 111 on the table 101. Because the ultrasonic wave can take place the reflection when meeting the boundary surface that different media formed in the transmission course, consequently, can calculate the distance of different interface to ultrasonic sensor through the ultrasonic wave of gathering the reflection back, realize the range finding function. In the present embodiment, the ultrasonic sensor 113 is used to detect the liquid level of the injected liquid in the container 111, and in order to simplify the measurement and calculation of the liquid level, it is preferable to provide a through hole on the table 101 in the region where the container 111 is placed, and enable the ultrasonic wave emitted by the ultrasonic sensor 113 to directly propagate to the bottom of the container 111 through the through hole, so that the first interface where the ultrasonic wave reaches is the interface between the air and the bottom of the container 111, thereby facilitating the accurate identification of the subsequent interfaces. In addition, the through hole design is adopted, so that barriers encountered by the ultrasonic waves in the transmission process can be reduced, energy attenuation caused by the ultrasonic waves when the ultrasonic waves penetrate through the barriers is reduced, and reliable receiving of the reflected ultrasonic waves is ensured.
Of course, the through hole design is only a preferred solution, and for the mesa 101 without the through hole design, in order to reduce the number of interfaces encountered by the ultrasonic wave during the propagation process and simplify the calculation process, the mesa 101 is preferably made of a material, and the thickness is not too thick, for example, the mesa 101 is made of 3-5mm plastic, so as to ensure that the energy of the ultrasonic wave does not attenuate too much when penetrating through the mesa 101.
The top surface 102 of the container placement area 100 is located directly above the countertop 101, opposite the countertop 101, on which the infrared sensor 112 is mounted. The infrared sensor 112 is an infrared distance measuring sensor, emits infrared rays, receives infrared rays reflected by the infrared rays when the infrared rays encounter an obstacle, and calculates the distance between the obstacle and the infrared sensor 112 according to the time of receiving the reflected infrared rays, thereby realizing the distance measuring function.
The present embodiment utilizes the infrared sensor 112 to detect the height of the container 111 placed on the table top 101, and may specifically be implemented by performing infrared scanning on the table top 101 and the container 111 placed on the table top 101.
In order to realize infrared scanning of the table 101 and the container 111, the present embodiment provides three preferable design solutions:
first, as shown in fig. 2, a rail 114 is installed on the top surface 102 of the container placement area 100, the rail 114 extends along the width direction of the container placement area 100, the infrared sensor 112 is installed on the rail 114, a power mechanism (not shown) such as a stepping motor is provided in the water injection device, the power mechanism 114 is controlled by a controller to operate, and then the infrared sensor 112 is driven to move along the rail 114 to perform infrared scanning on the table top 101 and the container 111 placed on the table top 101. The power mechanism may be mounted on the infrared sensor 112 to drive the infrared sensor 112 to move on the rail 114. Of course, the power mechanism may also be mounted on the rail 114, and the infrared sensor 112 fixed on the rail 114 moves along with the rail 114 by dragging the rail 114 to reciprocate, so as to implement infrared scanning.
Secondly, as shown in fig. 3, a rotating mechanism 115 is installed on the top surface 102 of the container placement area 100, the infrared sensor 112 is installed on the rotating mechanism 115, and the controller controls the rotating mechanism 115 to rotate, so as to drive the infrared sensor 112 to rotate within a certain angle range, for example, 15 degrees respectively to the left and the right, so as to realize the infrared scanning of the table top 101 and the container 111 placed on the table top 101.
Third, as shown in FIG. 4, an infrared sensor 119 that emits a relatively wide infrared beam is mounted on the top surface 102 of the container placement area 100, or a row of conventional infrared sensors 112 is mounted on the top surface 102 of the container placement area 100 to generate a wide infrared beam. The infrared beam emitted by the infrared sensor 119 should cover at least a portion of the container 111 and the countertop 101 to meet the requirements of infrared scanning ranging.
Of course, infrared scanning of the table top 101 and the container 111 on the table top 101 may be achieved in many other ways, and the embodiment is not limited to the above examples.
The automatic water injection control method of the intelligent water injection device of the present embodiment is described in detail below with reference to fig. 5, and specifically includes the following processes:
s501, placing a container 111 containing liquid on the table top 101 of the container placing area 100;
when the container 111 is placed, the container 111 is preferably placed right below the outlet pipe 110, i.e. the central axis of the container 111 can substantially coincide with the outlet of the outlet pipe 110, so as to ensure the accuracy of the container height and liquid level measurement.
S502, starting the infrared sensor 112 to measure height parameters of the container 111, such as the outer height, the inner cavity height, the bottom thickness and the like of the container 111;
in this embodiment, an instruction input unit 120, such as a key, a touch display screen, a remote control receiver, etc., may be disposed on the water filling apparatus for receiving an operation instruction of a user and transmitting the operation instruction to the controller in response to the operation of the user. When receiving a water injection instruction input by a user, the controller controls the infrared sensor 112 to startThe table 101 and the container 111 placed on the table 101 are scanned by infrared rays, and infrared rays reflected when the infrared rays are irradiated onto the table 101 and the container 111 are received, and the distance H from the table 101 to the infrared sensor 112 is calculated from the time when the infrared rays are emitted and the time when the reflected infrared rays are received, in combination with the propagation speed of the infrared rays Table top And the distance of different parts of the container 111 from the infrared sensor 112.
Specifically, the reflected infrared rays received by the infrared sensor 112 include at least:
(1) the infrared ray reflected by the table 101 can calculate the distance H from the table 101 to the infrared sensor 112 Table top I.e. the distance H between the bottom 117 of the container 111 and the infrared sensor 112 Table top ；
(2) The distance H from the inner bottom 116 of the container 111 to the infrared sensor 112 can be calculated from the infrared rays reflected by the inner bottom 116 of the container 111 Inner sole ；
(3) The distance H from the upper edge 118 of the container to the infrared sensor 112 can be calculated from the infrared rays reflected by the upper edge 118 of the container 111 Upper edge of the container 。
If the peripheral wall of the container 111 is not vertical, infrared rays reflected by the peripheral wall are also included.
The infrared sensor 112 calculates a plurality of measurement distances from the received reflected infrared rays, and sends the measurement distances to the controller, so as to calculate the height parameters of some parts of the container 111. According to the structure design of the embodiment, the distance measured by the largest value can be regarded as the distance H from the table-board 101 to the infrared sensor 112 Table top The distance measured next to the maximum value is considered as the distance H from the inner bottom 116 of the container 111 to the infrared sensor 112 Inner sole The measured distance with the smallest value is considered to be the distance H between the upper edge 118 of the container 111 and the infrared sensor 112 Upper edge of the container . Thus, the height H of the container 111 (i.e., the outer height of the container 111), the height H of the inner bottom 116 of the container to the upper edge 118 of the container (i.e., the height of the inner cavity of the container 111), and the bottom thickness H of the container (i.e., the thickness of the lower bottom of the container 111) can be calculated Bottom thickness Namely:
H=H table top -H Upper edge of the container ；
h=H Inner sole -H Upper edge of the container ；
H Bottom thickness =H Table top -H Inner sole 。
S503, starting water injection;
the controller calculates the height H of the inner cavity of the container 111 and the bottom thickness H of the container 111 Bottom thickness Then, the solenoid valve on the water outlet pipe 110 is controlled to open, and water or a desired kind of liquid is injected into the container 111.
S504, starting the ultrasonic sensor 113 to measure the liquid level d in the container 111 during water filling;
after the water filling is started, the controller activates the ultrasonic sensor 113 to emit ultrasonic waves to the container 111. The ultrasonic sensor 113 of this embodiment is an ultrasonic distance measuring sensor, and not only emits ultrasonic waves, but also receives ultrasonic waves reflected by the ultrasonic waves when the ultrasonic waves are propagated to boundary surfaces of different media, and the distances from the ultrasonic sensor 113 to different interface surfaces can be calculated by combining the propagation speed of the ultrasonic waves according to the emission time and the reception time of the ultrasonic waves.
In this embodiment, the ultrasonic sensor 113 sends the detected distance data to the controller to calculate the distance D from the top (liquid level) of the liquid in the container 111 to the ultrasonic sensor. The method for calculating the distance D is also known to those skilled in the art, and will not be described in detail herein. Since the mounting positions of the ultrasonic sensor 113 and the table top 101 are fixed, the distance D from the ultrasonic sensor 113 to the upper surface of the table top 101 is set Table top Has been determined to be a known quantity and, therefore, incorporates the container bottom thickness H detected by the infrared sensor 112 Bottom thickness The liquid level d in the container 111 can be calculated as follows:
d=D-D table top -H Bottom thickness ；
H Thickness of bottom =H Table top -H Inner sole 。
S505, stopping water injection when h-d is detected to be less than or equal to a set threshold value;
in order to further ensure that the liquid cannot overflow from the container 111, a preset threshold value S may be preset, for example, set to S =2cm, and when the controller detects that the height of the liquid filled into the container 111 is 2cm away from the upper edge 118 of the container 111, the controller controls the electromagnetic valve on the water outlet pipe to close, and stops filling the container 111 with the water, so as to achieve the purpose of overflow prevention.
The set threshold S can be determined in various ways, for example, it can be configured as 10% of the height of the outer cavity or the height of the inner cavity of the container 111, so that the value of the set threshold S varies with the height of the container 111, which is not limited in this embodiment.
This embodiment has mainly solved the water injection in-process, and liquid overflows the actual problem of container. During the operation of the device, the infrared sensor collects the outline of the container to obtain height information, the ultrasonic sensor is combined to measure the height of the liquid level in the container in real time, so that the distance between the upper edge of the container and the liquid level in the container is calculated, and the finishing time in the water injection process is controlled according to the distance information, so that the liquid is effectively prevented from overflowing, and resources are saved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. The utility model provides an intelligence water injection device which characterized in that includes:
a container placement area including a table for carrying a container and a top surface in opposing positional relationship to the table;
the infrared sensor is arranged on the top surface of the container placing area, and is used for performing infrared scanning on the table surface and the container placed on the table surface so as to obtain the height h from the bottom of the container to the upper edge of the container;
the ultrasonic sensor is arranged below the table top and used for emitting ultrasonic waves to a container placed on the table top so as to obtain the liquid level d in the container;
and the controller controls the water outlet pipe to stop water injection when detecting that h-d is less than or equal to a set threshold value.
2. The intelligent water injection apparatus according to claim 1,
the infrared sensor receives infrared rays reflected by the table top and the container in the process of performing infrared scanning on the table top and the container placed on the table top, generates a plurality of measuring distances according to the reflected infrared rays and sends the measuring distances to the controller;
the controller acquires the distance H from the table top to the infrared sensor according to the measurement distance fed back by the infrared sensor Table top Distance H from inner bottom of container to infrared sensor Inner sole And the distance H from the upper edge of the container to the infrared sensor Upper edge of the container And further calculating the height H = H from the inner bottom of the container to the upper edge of the container Inner sole -H Upper edge of the container 。
3. The intelligent water injection apparatus according to claim 2, wherein the controller selects the measurement distance with the largest value as the distance H from the table top to the infrared sensor according to the measurement distance fed back by the infrared sensor Table top Selecting the distance measured next to the maximum value as the distance H from the bottom of the container to the infrared sensor Inner sole Selecting the measuring distance with the smallest value as the distance H from the upper edge of the container to the infrared sensor Upper edge of the container 。
4. The intelligent water injection apparatus according to claim 2, further comprising an instruction input unit connected to the controller; when the controller receives a water injection instruction through the instruction input unit, the controller firstly controls the water outlet pipe to keep a closed state, starts the infrared sensor to detect the height h from the inner bottom of the container to the upper edge of the container, controls the water outlet pipe to be opened after the detection is finished, injects water into the container, and starts the ultrasonic sensor to detect the liquid level d in the container.
5. The intelligent water filling apparatus according to any one of claims 1 to 4, wherein the infrared sensor is mounted on the top surface of the container placement area in one of the following ways:
(1) A track is arranged on the top surface of the container placing area, the infrared sensor is arranged on the track, a power mechanism is further arranged in the intelligent water injection device, the controller controls the power mechanism to drive the infrared sensor to move along the track, and the infrared scanning is carried out on the table top and the container placed on the table top;
(2) The top surface of the container placing area is provided with a rotating mechanism, the infrared sensor is arranged on the rotating mechanism, and the controller controls the rotating mechanism to drive the infrared sensor to rotate within a certain angle range so as to perform infrared scanning on the table surface and the container placed on the table surface;
(3) The infrared sensor is fixedly installed on the top surface of the container placing area, and emits infrared beams which at least cover a part of the container and the table top.
6. The intelligent water injection device according to any one of claims 2 to 4, wherein the ultrasonic sensor is an ultrasonic distance measuring sensor, and transmits ultrasonic waves and receives reflected ultrasonic waves formed after the ultrasonic waves are reflected when the ultrasonic waves are transmitted to the interface surfaces of different media; the ultrasonic sensor forms measurement data according to the received reflected ultrasonic waves, the measurement data are sent to the controller, the distance D from the top surface of the liquid in the container to the ultrasonic sensor is calculated, and the height D of the liquid level in the container is calculated through the following formula:
d=D-D table top -H Bottom thickness
H Bottom thickness =H Table top -H Inner sole ；
Wherein D is Table top The distance from the upper surface of the table top to the ultrasonic sensor is a known quantity; h Bottom thickness Is the thickness of the lower bottom of the container.
7. The intelligent water injection device according to claim 6, wherein the ultrasonic sensor is located right below the water outlet of the water outlet pipe, a through hole is formed in a region of the table top where the container is placed, and ultrasonic waves emitted by the ultrasonic sensor are transmitted to the container through the through hole.
8. An intelligent water injection method is characterized by comprising the following steps:
an infrared sensor is arranged above a table top for bearing a container, and an ultrasonic sensor is arranged below the table top;
utilizing an infrared sensor to perform infrared scanning on the table top and the container placed on the table top, and measuring the height h from the inner bottom of the container to the upper edge of the container;
transmitting ultrasonic waves to a container placed on the table top by using an ultrasonic sensor, and measuring the liquid level d in the container;
and stopping water injection when the h-d is less than or equal to a set threshold value.
9. The intelligent water filling method as claimed in claim 8, wherein the infrared sensor receives infrared rays reflected by the table top and the container during the infrared scanning of the table top and the container placed on the table top, and the distance H from the table top to the infrared sensor is calculated according to the reflected infrared rays Table top Distance H from inner bottom of container to infrared sensor Inner sole And the distance H from the upper edge of the container to the infrared sensor Upper edge of the container And further calculating the height H = H from the inner bottom of the container to the upper edge of the container Inner sole -H Upper edge of the container 。
10. The intelligence of claim 9The water injection method is characterized in that a plurality of measuring distances are calculated according to the reflected infrared rays, and the measuring distance with the largest numerical value is selected as the distance H from the table top to the infrared sensor Table top Selecting the distance measured next to the maximum value as the distance H from the bottom of the container to the infrared sensor Inner sole Selecting the measuring distance with the smallest value as the distance H from the upper edge of the container to the infrared sensor Upper edge of the container 。
11. The intelligent water filling method according to claim 9, wherein in the process of measuring the liquid level d in the container,
transmitting ultrasonic waves to a container placed on the table top by using the ultrasonic sensor, wherein the ultrasonic waves are reflected when being transmitted to the interface surfaces of different media to form reflected ultrasonic waves, and the reflected ultrasonic waves are received by the ultrasonic sensor;
the ultrasonic sensor forms measurement data according to the received reflected ultrasonic waves;
calculating the distance D from the top surface of the liquid in the container to the ultrasonic sensor according to the measurement data;
calculating the liquid level d in the container:
d=D-D table top -H Bottom thickness
H Thickness of bottom =H Table top -H Inner sole ；
Wherein D is Table top The distance from the upper surface of the table top to the ultrasonic sensor is a known quantity; h Bottom thickness The thickness of the lower bottom of the container.
12. The intelligent water filling method according to any one of claims 8 to 11, wherein the infrared scanning process is performed before water filling is started, and relevant parameters of the container are calculated; then, the water outlet pipe is opened to fill water into the container, and the ultrasonic sensor is started to detect the liquid level in the container during water filling.
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| CN112325982A (en) * | 2020-10-15 | 2021-02-05 | 广州立功科技股份有限公司 | Liquid level detection method based on TOF (time of flight), automatic liquid injection method and liquid drinking machine |
| CN112683367A (en) * | 2020-12-28 | 2021-04-20 | 格力电器（芜湖）有限公司 | Dehumidifier water tank water level monitoring method and device |
| CN114235027B (en) * | 2021-12-23 | 2024-05-07 | 深圳市构通科技有限公司 | Container steady state detection method and device, drinking water equipment and storage medium |
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