CN110824578B - In-pot residue detection device and electric cooker - Google Patents
In-pot residue detection device and electric cooker Download PDFInfo
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- CN110824578B CN110824578B CN201810908952.1A CN201810908952A CN110824578B CN 110824578 B CN110824578 B CN 110824578B CN 201810908952 A CN201810908952 A CN 201810908952A CN 110824578 B CN110824578 B CN 110824578B
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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Abstract
The application relates to a device for detecting residues in a pot and an electric cooker, wherein the device for detecting the residues in the pot comprises a controller, a signal transmitter and a signal receiver; the signal emitter is used for emitting signals to the pot bottom of the electric cooker, and the signal receiver is used for receiving signals which are sent by the signal emitter and reflected by the pot bottom and sending the signals to the controller; the controller is electrically connected with the signal receiver and is used for generating a residue detection result according to the signal received by the signal receiver. The controller compares the electric signal converted by the actually received reflection signal with the electric signal converted by the reflection signal received when no residue exists at the bottom of the cooker, so that the detection of the residue in the cooker can be realized, and a data basis is provided for the next action of the electric cooker.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a device for detecting residues in a pot and an electric cooker.
Background
With the continuous development of the smart home technology and the continuous improvement of the living standard of people, the household appliances capable of realizing full-automatic intelligent work become research hotspots. For example, intelligent electric rice cooker products are expected to realize the automatic rice cooking function. In the implementation process, the inventor finds that at least the following defects exist: if more water or rice remains in the pot during cooking of the automatic electric rice cooker, during secondary cooking, for example, during cooking rice, rice and water are added into the pot according to a normal cooking proportion, which may cause excessive secondary water addition, and water overflows from the inner pot of the electric rice cooker and flows onto a heater at the bottom of the pot, thus causing safety accidents during cooking and heating.
Disclosure of Invention
Therefore, it is necessary to provide a device for detecting residue in a pot and an electric cooker, which are directed to the safety problem of the electric cooker in the conventional art.
In one aspect, an embodiment of the present invention provides a device for detecting residue in a pan, including a controller, a signal transmitter and a signal receiver; the signal emitter is used for emitting signals to the pot bottom of the electric cooker, and the signal receiver is used for receiving signals which are sent by the signal emitter and reflected by the pot bottom and sending the signals to the controller;
the controller is electrically connected with the signal receiver and is used for generating a residue detection result according to the signal received by the signal receiver.
In one embodiment, the signal transmitter is an infrared transmitting tube and the signal receiver is an infrared receiving tube.
In one embodiment, the distance between a signal transmitter and a corresponding signal receiver is less than 10 centimeters.
In one embodiment, the number of the signal transmitters is multiple, the number of the signal receivers is multiple, the number of the signal transmitters is the same as that of the signal receivers, and the signal transmitters and the signal receivers are arranged in a one-to-one correspondence manner.
In one embodiment, the residue detection device in the cooker further comprises a first resistor and a second resistor, wherein the first resistor and the infrared receiving tube are sequentially connected in series between a power supply and the ground of the electric cooker;
the second resistor and the infrared transmitting tube are sequentially connected in series between the power supply and the ground of the electric cooker;
the controller is used for connecting the power supply of the electric cooker, and the detection port of the controller is connected with the end of the first resistor connected with the infrared receiving tube.
In one embodiment, the device for detecting residue in the pan further comprises a third resistor, and the controller is connected with the end of the first resistor connected with the infrared receiving tube through the third resistor.
An electric cooker comprises a cooker body, an upper cover and the device for detecting residues in the cooker.
In one embodiment, the electric cooker also comprises a first valve and a second valve, the controller, the signal transmitter and the signal receiver are all arranged on the side surface of the outer cover of the upper cover close to the bottom of the cooker, the inner cover of the upper cover is provided with a transmitting through hole and a receiving through hole, the first valve is arranged at the transmitting through hole, and the second valve is arranged at the receiving through hole;
the controller is electrically connected to the first valve and the second valve, respectively.
In one embodiment, the electric cooker further comprises a driving mechanism, and the controller is used for controlling the driving mechanism to work, so that the driving mechanism drives the signal emitter and the signal receiver to scan the bottom of the cooker.
In one embodiment, the drive mechanism comprises a driver, a stepper motor and a moving arm; the signal emitter and the signal receiver are both arranged at the tail end of the moving arm;
the controller is electrically connected with the input end of the driver, and the output end of the driver is electrically connected with the input end of the stepping motor;
the output shaft of the stepping motor is mechanically connected with the moving arm.
One or more embodiments provided by the invention have at least the following beneficial effects: the embodiment of the invention provides a device for detecting residues in a pot, which comprises a controller, a signal emitter and a signal receiver, wherein the signal emitter is connected with the signal receiver; the signal emitter is used for emitting signals to the pot bottom of the electric cooker, and the signal receiver is used for receiving signals which are sent by the signal emitter and reflected by the pot bottom and sending the signals to the controller; the controller is electrically connected with the signal receiver and is used for generating a residue detection result according to the signal received by the signal receiver. The controller compares the electric signal converted by the actually received reflection signal with the electric signal converted by the reflection signal received when no residue exists at the bottom of the cooker, so that the detection of the residue in the cooker can be realized, and a data basis is provided for the next action of the electric cooker.
Drawings
FIG. 1 is a schematic diagram showing the structure of a residue detecting device in a pan in one embodiment;
FIG. 2 is a schematic circuit diagram of a residue detection device in the pan according to an embodiment;
FIG. 3 is a schematic view showing the structure of the rice cooker in one embodiment;
FIG. 4 is a schematic view of the rice cooker in another embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiment of the invention provides a device for detecting residues in a pan, which is shown in fig. 1 and comprises a controller 10, a signal transmitter 20 and a signal receiver 30; the signal emitter 20 is used for emitting signals to the bottom of the electric cooker, and the signal receiver 30 is used for receiving signals reflected by the bottom of the cooker and sent by the signal emitter 20 and sending the signals to the controller 10; the controller 10 is electrically connected to the signal receiver 30 and is configured to generate a residue detection result according to a signal received by the signal receiver 30.
The signal emitter 20 is an emitter which can reflect the emitted signal after contacting the pan bottom, and the signal receiver 30 is a receiver which can receive the part of the signal reflected by the pan bottom. For example, the signal transmitter 20 may be an infrared transmitting tube, an ultrasonic generator, or the like, and the signal receiver 30 may be an infrared receiving tube, an ultrasonic receiver, or the like.
Specifically, when the cooking work needs to be performed, the signal emitter 20 in the device for detecting residue in the pan emits a signal to the pan bottom of the electric rice cooker, the signal emitted by the signal emitter 20 is reflected by the pan bottom and reaches the signal receiver 30, the signal receiver 30 receives the reflected signal and generates an electrical signal that can be recognized by the controller 10, and the controller 10 can determine whether there is residue on the pan bottom according to the received electrical signal, for example, the controller 10 can compare the measured electrical signal with the electrical signal received when there is no residue on the pan bottom, because the signal emitted by the signal emitter 20 can basically reach the signal receiver 30 after being reflected by the pan bottom when there is residue on the pan bottom, the distance from the signal emitter 20 to the pan bottom becomes short, the intensity of the reflected signal received by the signal receiver 30 becomes strong, and the electrical signal generated by the signal receiver 30 is different from the situation when there is no residue on the pan bottom, therefore, whether residues exist on the pot bottom can be judged through comparison and judgment of the electric signals, and a residue detection result is generated. Optionally, the controller 10 is also in wireless communication with a remote terminal and is configured to send the obtained residual non-detection result to the remote terminal. The user can monitor the condition of the residue on the bottom of the pot at the remote terminal.
In one embodiment, as shown in fig. 1 and 2, signal transmitter 20 is an infrared transmitting tube and signal receiver 30 is an infrared receiving tube.
Specifically, the controller 10 controls the signal transmitter 20, that is, the infrared transmitting tube transmits infrared rays to the pan bottom, the infrared rays are reflected after being irradiated to the pan bottom, the reflected infrared rays are irradiated to the signal receiver 30, and the closer the distance from the infrared transmitting tube to the object on the outermost surface of the pan bottom, the stronger the intensity of the reflected infrared rays received by the signal receiver 30 is. The electric signal output by the signal receiver 30 to the controller 10 will also be different with the distance from the infrared transmitting tube to the object on the bottom surface of the pan, and the detection of the residue in the pan can be realized by comparing the measured electric signal with the electric signal when no residue is left on the bottom of the pan.
In one embodiment, the controller 10 is further electrically connected to the signal transmitter 20, and the controller 10 is configured to control the signal transmitter 20 to transmit a signal, obtain the pot bottom distance according to the time when the signal transmitter 20 transmits the signal and the time when the signal receiver 30 receives the signal, and compare the pot bottom distance with the standard distance to obtain the pot bottom residue detection result.
The pan bottom distance may be a distance from the controller 10 to an uppermost object of the pan bottom, or may be a distance from the signal transmitter 20/the signal receiver 30 to the uppermost object of the pan bottom. The standard distance is the distance of the bottom of the pan when no residue is left in the pan. Specifically, the controller 10 controls the signal emitter 20 to emit a signal to the bottom of the pan, which may be an infrared ray or an ultrasonic signal, for example. Then the signal emitted by the signal emitter 20 is reflected by the pan bottom to reach the signal receiver 30, the signal receiver 30 sends the received reflected signal to the controller 10, the controller 10 can calculate the distance from the signal emitter 20/the signal receiver 30 to the pan bottom according to the emitting time of the signal emitter 20 and the receiving time of the signal receiver 30, if the relative positions of the controller 10 and the signal emitter 20/the signal receiver 30 are fixed, the distance from the controller 10 to the pan bottom can also be calculated, then the controller 10 compares the measured pan bottom distance with the standard distance, and can judge whether the pan bottom has residues, and generate a residue detection result. Wherein the signal transmitter 20 and the signal receiver 30 may be arranged substantially in parallel.
In one embodiment, the distance between a signal transmitter 20 and a corresponding signal receiver 30 is less than 10 centimeters. In order to facilitate the signal receiver 30 to better receive the reflected signal of the signal emitted by the signal emitter 20 after being reflected by the bottom of the pan, the distance between the signal emitter 20 and the signal receiver 30 is preferably less than 10 cm.
In one embodiment, there are a plurality of signal transmitters 20 and a plurality of signal receivers 30, the number of signal transmitters 20 is the same as that of signal receivers 30, and the signal transmitters 20 and the signal receivers 30 are arranged in a one-to-one correspondence.
Because the residue on the bottom of the pan may be some scattered rice grains and the like, the distribution is uneven, in order to further improve the reliability and the effectiveness of detection, a plurality of signal transmitters 20 are provided, a plurality of signal receivers 30 are provided, the number of the signal transmitters 20 is the same as that of the signal receivers 30, the signal transmitters 20 and the signal receivers 30 are arranged in a one-to-one correspondence manner, when the residue on the bottom of the pan is detected, the signal transmitters 20 transmit signals to the bottom of the pan, the signal receivers 30 corresponding to the signal transmitters receive the signals reflected by the bottom of the pan, the controller 10 acquires the reflected signals received by the signal receivers 30, and the controller 10 determines whether the residue exists at the detection point corresponding to the bottom of the pan according to the signals received by the signal receivers 30, thereby realizing the residue detection.
In one embodiment, as shown in fig. 2, the residue detection device in the cooker further comprises a first resistor R1 and a second resistor R2, wherein the first resistor R1 and the infrared receiving tube are sequentially connected in series between the power supply and the ground of the electric cooker; the second resistor R2 and the infrared emission tube are connected in series between the power supply and the ground of the electric cooker in sequence; the controller 10 is used for connecting the power supply of the electric cooker, and the detection port of the controller 10 is connected with the end of the first resistor R1 connected with the infrared receiving tube.
After providing operating current for the device for detecting residue in the pan, the signal emitter 20 starts to operate, and emits signal to the pan bottom, the power of the signal emitter 20 is determined by the size of the second resistor R2, when the signal receiver 30 receives the reflected signal, the signal emitter is conducted in reverse direction, conducting current with different sizes is generated according to the strength of the received signal, the intensity is stronger when the signal receiver is closer to the pan bottom, so that voltage drop is generated at two ends of the signal receiver 30, voltage division is performed with the first resistor R1, then the voltage detection port of the controller 10 is accessed, the distance of the pan bottom can be calculated by the controller 10 according to the received voltage, and whether residue exists at the pan bottom is judged. For example, when there is no residue in the inner pot of the pot body, the signal receiver 30 transmits the received infrared ray to the controller 10 and converts the received infrared ray into an AD value of 0x80, and at this time, if there is water or rice or other objects in the inner pot, the detected AD value will change immediately and is less than 0x80, and the controller 10 can detect whether there is residue in the inner pot by detecting the AD value.
In one embodiment, as shown in fig. 2, the device for detecting residue in a pan further comprises a third resistor R3, and the controller 10 is connected to the end of the first resistor R1 connected to the infrared receiving tube through the third resistor R3. In order to improve the safety of the device for detecting residue in the pan, the signal receiver 30 is connected to the detection port of the controller 10 through the third resistor R3 for voltage detection and distance conversion, and the third resistor R3 plays a role in protecting the detection port.
The embodiment of the invention also provides an electric cooker, which comprises a cooker body 2, an upper cover 3 and the device 1 for detecting residues in the cooker, as shown in figure 3.
Wherein, the upper cover 3 is a device for covering the pot body 2 or opening the pot body 2. The pot body 2 includes an inner pot 21, and the inner pot 21 is used for containing food to be cooked and the like. The upper cover 3 comprises an inner cover 31 and an outer cover 32, wherein the inner cover 31 is arranged at one side close to the bottom of the inner pot 21. It should be noted that the device 1 for detecting residue in the pan is the same as the device 1 for detecting residue in the pan described in the above embodiments, and the detailed description thereof is omitted here.
Specifically, before the electric cooker is required to automatically cook, the residue in the cooker can be detected firstly, so that food waste caused by excessive food residue in the cooker or safety accidents caused by excessive water added in a new cooking process overflowing the inner cooker 21 can be avoided. The upper cover 3 is covered on the pot body 2, the residue in the pot detection device 1 on the electric cooker detects the residue on the bottom of the pot, the residue in the pot detection device 1 detects the residue on the bottom of the pot according to the principle described in the above embodiment, and generates the detection result of the residue in the pot. And providing data basis for the next cooking plan of the user.
In one embodiment, as shown in fig. 4, the electric rice cooker further comprises a first valve and a second valve, the controller 10, the signal transmitter 20 and the signal receiver 30 are all disposed on the side surface of the outer cover 32 of the upper cover 3 close to the bottom of the cooker, the inner cover 31 of the upper cover 3 is provided with a transmitting through hole 311 and a receiving through hole 312, the transmitting through hole 311 is provided with the first valve, and the receiving through hole 312 is provided with the second valve; the controller 10 is electrically connected to the first valve and the second valve, respectively.
Specifically, the controller 10, the signal emitter 20 and the signal receiver 30 are all arranged on the side surface of the outer cover 32 of the upper cover 3 close to the bottom of the pot, namely, between the inner cover 31 of the upper cover 3 and the outer cover 32 of the upper cover 3, so that the controller 10, the signal emitter 20 and the signal receiver 30 are not damaged by high-temperature steam in the cooking process. The inner cover 31 is provided with an emitting through hole 311 and a receiving through hole 312, the emitting through hole 311 is used for emitting signals to the bottom of the pan through the signal emitter 20, and the receiving through hole 312 is used for receiving the reflected signals reflected by the bottom of the pan. During cooking, the first valve disposed at the transmitting through hole 311 and the second valve disposed at the receiving through hole 312 are both closed to protect the electrical components from being damaged. Before cooking, the residue in the pot needs to be detected, the controller 10 controls the first valve and the second valve to be opened, the signal emitter 20 emits a signal to the bottom of the pot through the emission through hole 311, and the signal receiver 30 receives the signal reflected by the bottom of the pot and passing through the receiving through hole 312. The controller 10 judges whether there is residue on the pan bottom according to the received signal reflected by the pan bottom.
In one embodiment, the rice cooker further comprises a driving mechanism, and the controller 10 is configured to control the driving mechanism to operate, so that the driving mechanism drives the signal emitter 20 and the signal receiver 30 to scan the bottom of the pot.
Wherein, scanning refers to detecting the pan bottom one by one according to a certain track. If residues in the pan are scattered rice grains and the like, in order to further improve the reliability of detection, a driving mechanism is further arranged on the electric rice cooker, the controller 10 is electrically connected with the driving mechanism, and the controller 10 controls the driving mechanism to move, so that a signal emitter 20 and a signal receiver 30 which are arranged on the driving mechanism are driven to scan and detect the bottom of the pan, and the detection of the residues at different positions of the bottom of the pan is realized. The method and the device can ensure accurate detection of residues in the pot, can realize good detection on the condition that a small amount of residues are left in the pot, and provide decision basis for a subsequent cooking plan.
In one embodiment, the drive mechanism comprises a driver, a stepper motor and a moving arm; the signal transmitter 20 and the signal receiver 30 are both arranged at the end of the moving arm; the controller 10 is electrically connected with the input end of the driver, and the output end of the driver is electrically connected with the input end of the stepping motor; the output shaft of the stepping motor is mechanically connected with the moving arm.
Specifically, controller 10 is connected with the driver electricity, and controller 10 sends the pulse and gives the driver, and the driver drives step motor work according to the pulse of receiving, and step motor drives the moving arm motion, sets up and carries out the residue to the bottom of a boiler at the terminal signal transmitter 20 of moving arm and signal receiver 30 and detect, and the moving arm is at the removal in-process, realizes the detection to the bottom of a boiler different position residues.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An electric cooker comprises a cooker body and an upper cover, and is characterized by also comprising a device for detecting residues in the cooker;
the residue detection device in the pot comprises a controller, a signal emitter and a signal receiver; the signal emitter is used for emitting signals to the bottom of the electric cooker, and the signal receiver is used for receiving signals sent by the signal emitter, reflected by the bottom of the cooker and sent to the controller;
the controller is electrically connected with the signal receiver and used for generating a residue detection result according to the signal received by the signal receiver;
the number of the signal transmitters is the same as that of the signal receivers, and the signal transmitters and the signal receivers are arranged in a one-to-one correspondence manner;
the electric cooker also comprises a driving mechanism, and the controller is also used for controlling the driving mechanism to work, so that the driving mechanism drives the signal emitter and the signal receiver to scan the pot bottom one by one.
2. The rice cooker of claim 1, wherein the signal transmitter is an infrared transmitting tube and the signal receiver is an infrared receiving tube.
3. The rice cooker of claim 2, wherein the distance between the signal transmitter and the corresponding signal receiver is less than 10 cm.
4. The rice cooker as claimed in any one of claims 1-3, wherein the signal receiver is used for receiving the signal reflected by the pan bottom and generating an electric signal to be sent to the controller;
the controller is configured to:
comparing the electric signal with an electric signal converted from a reflected signal received by the signal receiver when no residue exists at the bottom of the pan, and generating a residue detection result;
or the distance between the pot bottom and the uppermost object of the pot bottom is used for representing the distance to the uppermost object of the pot bottom, and the standard distance refers to the distance between the pot bottom and the uppermost object of the pot bottom when no residue exists in the pot.
5. The electric cooker as claimed in claim 2, further comprising a first resistor and a second resistor, wherein the first resistor and the infrared receiving tube are sequentially connected in series between a power supply and ground of the electric cooker;
the second resistor and the infrared emission tube are sequentially connected in series between a power supply and the ground of the electric cooker;
the controller is used for being connected with a power supply of the electric cooker, and a detection port of the controller is connected with the end of the first resistor, which is connected with the infrared receiving tube.
6. The rice cooker as claimed in claim 5, further comprising a third resistor, wherein the controller is connected to the end of the first resistor connected to the infrared receiving tube through the third resistor.
7. The electric cooker as claimed in claim 1, further comprising a first valve and a second valve, wherein the controller, the signal transmitter and the signal receiver are all disposed on the side surface of the outer cover of the upper cover close to the bottom of the cooker, the inner cover of the upper cover is provided with a transmitting through hole and a receiving through hole, the first valve is disposed at the transmitting through hole, and the second valve is disposed at the receiving through hole;
the controller is electrically connected to the first valve and the second valve, respectively.
8. The rice cooker as claimed in claim 1, further comprising a driving mechanism, wherein the controller is configured to control the driving mechanism to operate, so that the driving mechanism drives the signal emitter and the signal receiver to scan the bottom of the cooker.
9. The rice cooker of claim 8, wherein said drive mechanism comprises a driver, a stepper motor and a moving arm; the signal transmitter and the signal receiver are both arranged at the tail end of the moving arm;
the controller is electrically connected with the input end of the driver, and the output end of the driver is electrically connected with the input end of the stepping motor;
an output shaft of the stepping motor is mechanically connected with the moving arm;
the controller sends a pulse to the driver, the driver drives the stepping motor to work according to the received pulse, and the stepping motor drives the moving arm to move to drive the signal transmitter and the signal receiver which are arranged at the tail end of the moving arm to continuously detect residues on the pot bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810908952.1A CN110824578B (en) | 2018-08-10 | 2018-08-10 | In-pot residue detection device and electric cooker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810908952.1A CN110824578B (en) | 2018-08-10 | 2018-08-10 | In-pot residue detection device and electric cooker |
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| CN110824578B true CN110824578B (en) | 2022-04-22 |
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