CN110686459A - Door opening and closing signal detection structure and method and refrigerator - Google Patents
Door opening and closing signal detection structure and method and refrigerator Download PDFInfo
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- CN110686459A CN110686459A CN201910827810.7A CN201910827810A CN110686459A CN 110686459 A CN110686459 A CN 110686459A CN 201910827810 A CN201910827810 A CN 201910827810A CN 110686459 A CN110686459 A CN 110686459A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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Abstract
The invention provides a door opening and closing signal detection structure, a door opening and closing signal detection method and a refrigerator, wherein a refrigerator door on the refrigerator is arranged on one side of a refrigerating chamber through the door opening and closing signal detection structure, the door opening and closing signal detection structure is provided with a grating plate connected with the refrigerator door, and a light source assembly and a photosensitive element which are arranged on two sides of the grating plate, and the light source assembly emits light which penetrates through the grating plate and irradiates on the photosensitive element to enable the photosensitive element to generate induction current; when the door of the refrigerator is opened or closed, the grating plate moves along with the door, and the induced current generated by the photosensitive element changes. The invention can achieve the aim of controlling the movement of the door by converting the movement information of the door into the electric signal of induced current and feeding the electric signal back to the main control chip to generate control information.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a door opening and closing signal detection structure and method and a refrigerator.
Background
With the popularization of refrigerator intellectualization, automatic door opening of a refrigerator becomes a trend of user interaction experience: when a user holds food or a plate in the hand, the refrigerator can be automatically opened by receiving voice information or sensing motion information and limb information, so that the user can conveniently take articles in the refrigerator or place the articles in the refrigerator when the user is not convenient to open the door.
However, the existing interactive mode of automatically opening the door of the refrigerator has the following problems: when colliding with barrier or human body on the route that opens and shuts of refrigerator door, the refrigerator door can not stop or reverse motion in order to avoid the barrier, but can continue work according to original mode of opening and shutting, and the personnel that so not only can injure near the refrigerator door cause the safety problem, still can cause the damage of refrigerator door drive unit. How to avoid the potential safety hazard when the refrigerator door is automatically opened and closed becomes a difficult problem to be solved urgently in the industry.
Disclosure of Invention
The invention provides a door opening and closing signal detection structure, which is used for converting motion information of a door body into a current signal and feeding the current signal back to a driving motor to change the motion of the door body, and also provides a door opening and closing signal detection method and a refrigerator applying the door opening and closing signal detection structure.
The invention is realized by the following technical scheme:
a door opening and closing signal detecting structure comprising: drive door body wobbling door shaft gear, drive the rotatory driving motor of door shaft gear and control driving motor's main control chip, the switch door signal detection structure still includes the coding structure, the coding structure includes:
the door shaft gear is connected with the door shaft gear through a light source assembly, a grating plate, a photosensitive element and a coding output elastic sheet, the light source assembly is used for emitting light, the grating plate is connected with the door shaft gear, the photosensitive element is used for receiving illumination to generate induced current, and the coding output elastic sheet is used for coding the induced current to generate control information;
the light source assembly and the encoding output elastic sheet are arranged on two sides of the grating plate, and the photosensitive element is arranged on the encoding output elastic sheet and faces the grating plate;
the door shaft gear drives the grating plate to rotate, the light source assembly emits light to irradiate the photosensitive element through the grating plate, and induced current generated by the photosensitive element is sent to the main control chip after being encoded by the encoding output elastic sheet.
The gate signal detection structure, wherein the coding structure further comprises: the encoder comprises a housing arranged on the encoding output elastic sheet and an encoder shaft which penetrates through the housing and is arranged on the housing;
the light source assembly is arranged on the housing and emits light to irradiate towards the interior of the housing;
the grating plate is mounted in the housing and on the encoder shaft;
the photosensitive element is located in the housing, and the coding output elastic sheet seals the housing.
The door opening and closing signal detection structure comprises a coding structure and a signal detection module, wherein the coding structure comprises a notch positioned on one side of the housing and a coding gear arranged at one end of the encoder shaft, which is exposed out of the housing;
the cover housing is attached to the mounting shaft of the door shaft gear through the notch, and the coding gear is meshed with the door shaft gear to drive the grating plate to rotate.
The door opening and closing signal detection structure is characterized in that the light source component comprises a lamp piece and a lens, the lamp piece is electrified to emit light and emits the light outwards after passing through the lens, and the lens refracts the light emitted by the lamp piece to form parallel light.
The switch door signal detection structure, wherein, the grating board includes: the zero-position hole and the grating are positioned outside the zero-position hole and distributed along the edge of the grating plate;
the photosensitive element comprises a light source for receiving light to generate an induced current: the zero-position sensor receives illumination through the zero-position hole, and the first sensor and the second sensor receive illumination through the grating.
The door opening and closing signal detection structure comprises a plurality of reduction gears, and the driving motor drives the door shaft gear to rotate through the reduction gears.
A door opening and closing signal detection method is realized based on any one of the door opening and closing signal detection structures, and comprises the following steps:
the driving motor drives the door shaft gear to rotate, so as to drive the grating plate to rotate;
the light source component emits light and irradiates the photosensitive element through the grating plate;
the photosensitive element receives illumination to generate induction current;
the encoding output elastic sheet encodes the induced current to generate control information and outputs the control information to the main control chip;
and the main control chip controls the driving motor according to the control information.
The method for detecting a gate switching signal, wherein the step of receiving light by the light sensor to generate an induced current includes:
a first sensor of the photosensitive element receives illumination to generate a first current signal;
a second sensor of the photosensitive element receives illumination to generate a second current signal;
the zero position sensor of the photosensitive element receives illumination to generate a third current signal.
The method for detecting the door opening and closing signal, wherein the step of encoding the induced current by the encoding output elastic sheet to generate control information and outputting the control information to the main control chip comprises the following steps:
the encoding output elastic sheet judges the rotation direction of the door shaft gear according to the phase difference of the first current signal and the second current signal;
and the encoding output elastic sheet judges whether the door shaft gear is static or rotating according to the period of the third current signal.
A refrigerator, comprising: according to the door opening and closing signal detection structure, the refrigerator door and the refrigerating chamber, the refrigerator door is installed on one side of the refrigerating chamber through the door shaft gear in the door opening and closing signal detection structure, and the driving motor drives the refrigerator door to open or close the refrigerating chamber.
The invention has the beneficial effects that:
in the door opening and closing signal detection structure, light emitted by the photosensitive element irradiates on the photosensitive element through the grating plate, so that the photosensitive element generates induced current; the grating plate is connected with the door shaft gear, when the door mounted with the door shaft gear performs door opening, door closing or stopping actions, the door shaft gear can drive the grating plate to rotate or stop, when the grating plate moves, light irradiated on the photosensitive element changes, and induced current generated by the photosensitive element also changes;
the motion information of the door provided with the door shaft gear can be judged according to the induced current generated by the photosensitive element, namely the motion information of the door is converted into a current signal; the current signal is encoded to generate control information, the control information is fed back and controls the driving motor, automatic adjustment of opening and closing of the door can be achieved, the door can be stopped in time or returned according to an original route when being blocked by an obstacle, and the problems that in the prior art, the door body and structural parts are damaged due to the fact that the door still executes the original movement direction under the condition that the obstacle blocks, or safety accidents are caused by collision of people are solved.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a gate opening and closing signal detection structure according to the present invention;
FIG. 2 is an exploded view of the door spindle gear and coding structure of the present invention;
FIG. 3 is a schematic diagram of a position relationship between a grating plate and a photosensitive element in the structure for detecting a switch gate signal according to the present invention;
FIG. 4 is a schematic diagram of the current signal generated by the photosensor of the present invention as a function of time;
FIG. 4a is a schematic representation of the current signal over time with the door stopped in an obstructed view according to the present invention;
FIG. 4b is a schematic diagram of the current signal over time when the door is subjected to reverse thrust in accordance with the present invention;
FIG. 5 is a schematic flow chart of a method for detecting a gate-on/off signal according to the present invention;
fig. 6 is a schematic perspective view of a refrigerator according to the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a structure 100 for detecting a gate opening/closing signal according to the present invention includes: the door comprises a door shaft gear 21 for driving a door body to swing, a driving motor 22 connected with the door shaft gear 21 to drive the door shaft gear 21 to rotate, and a main control chip (not shown) connected with the driving motor 22 to control the driving motor 22. The main control chip controls the driving motor 22 to rotate forward, reversely, stop or start, and the driving motor 22 drives the door shaft gear 21 to rotate, so that the door body mounted on the door shaft gear 21 can realize the automatic door opening and closing operation.
In an embodiment of the present invention, the door may be opened or closed by a door shaft disposed on the door, and the door shaft is connected to the driving motor 22 through a track or a gear to drive the driving motor 22 to open or close the door.
In one embodiment of the present invention, the output shaft of the driving motor 22 and the door shaft gear 21 are engaged through a set of reduction gears 23, the reduction gears 23 reduce the output power of the driving motor 22 to the door shaft gear 21, and the user increases or decreases the number of the reduction gears 23 according to the rotating speed requirement of the door shaft gear 21, so as to change the door opening/closing speed of the door mounted on the door shaft gear 21.
Referring to fig. 2, the gate switching signal detecting structure 100 further includes an encoding structure 1, where the encoding structure 1 includes: the door comprises a housing 11, an encoder shaft 12 penetrating and installed on the housing 11, and an encoding gear 120 installed at one end, exposed out of the housing 11, of the encoder shaft 12, wherein the encoding gear 120 is meshed with a door shaft gear 21, and when a door is opened or closed, the door shaft gear 21 rotates to drive the encoding gear 120 to rotate.
The housing 11 is further provided with a code output elastic sheet 13, the code output elastic sheet 13 seals the housing 11, and the code structure 1 further comprises: the encoder comprises a light source component 14, a grating plate 15 and a photosensitive element 16, wherein the light source component 14 is installed on the housing 11 and used for emitting light, the grating plate 15 and the encoding gear 120 are coaxially installed on the encoder shaft 12, and the photosensitive element 16 is installed on the encoding output elastic sheet 13. The light source assembly 14 emits light to the inside of the housing 11, the light irradiates the photosensitive element 16 through the grating plate 15, the photosensitive element 16 receives the light to generate induced current, the encoding output elastic sheet 13 receives the induced current and encodes the induced current to generate control information, the encoding output elastic sheet 13 is connected with the main control chip, and the encoding output elastic sheet 13 outputs the control information to the main control chip to control the driving motor 22.
In this embodiment, the door shaft gear 21 rotates to sequentially drive the encoding gear 120, the encoder shaft 12 and the grating plate 15 to rotate, and the light source assembly 14 emits light to irradiate the grating plate 15 onto the photosensitive element 16, when the grating plate 15 rotates, the intensity of the light irradiated onto the photosensitive element 16 changes periodically, the induced current generated by the photosensitive element 16 changes periodically accordingly, so that the action information of the door shaft gear 21 (or the door) is converted into an electrical signal, and the induced current is encoded to control the driving motor 22. The induced current generates control information and feeds the control information back to the main control chip, so that the door can be stopped or moved reversely when being blocked in the opening and closing process, and the problem that the door body part is damaged or the person is injured due to collision caused by the fact that the door still moves according to the original movement direction after being blocked is solved.
In this embodiment, the housing 11 is used to cover the photosensitive element 16, and the photosensitive element 16 located in the housing 11 can only receive the illumination emitted by the light source assembly 14, and is not interfered by external light, so as to ensure the uniqueness and accuracy of the illumination received by the photosensitive element 16.
Referring to fig. 2, the light emitted by the light source assembly 14 is parallel light, and the parallel light only propagates in one direction during propagation, so that the parallel light has stronger illumination intensity on a specified area compared with scattered light and spherical light under the same power, and the intensity change of the induced current generated by the photosensitive element 16 is larger, which is beneficial to the identification of the encoded output elastic sheet 13 on the induced current. In a preferred embodiment of the present invention, the light source assembly 14 is composed of a lamp element 141 and a lens 142, light emitted from the lamp element 141 passes through the lens 142 and then propagates to the photosensitive element 16, the lens 142 refracts the light emitted from the lamp element 141 to form parallel light, and the light of the lamp element 141 is refracted and adjusted through the lens 142, so that the production and use costs of the lamp element 141 can be reduced, which is beneficial to the industrial manufacturing of the light source assembly 14.
Referring to fig. 3, the photosensitive element 16 mainly comprises three parts, namely a first sensor 161, a second sensor 162 and a null sensor 163, and the grating plate 15 also comprises two light-transmitting parts: one is a grating 151 located at the edge of the grating plate 15 and distributed annularly and a null hole 152 located at one side of the annular grating 151, light emitted by the light source assembly 14 respectively passes through the grating 151 and the null hole 152 to irradiate on the photosensitive element 16, the first sensor 161 and the second sensor 162 receive the light through the grating 151, the null sensor 163 receives the light through the null hole 152, differences exist among induced currents generated by the null sensor 163, the first sensor 161 and the second sensor 162, and the coded output elastic sheet 13 generates control information through different induced currents.
In this embodiment, the grating 151 is located on the grating plate 15, and is in a plurality of annular hole-shaped structures arranged at equal intervals, and during the rotation of the grating plate 15, the grating 151 continuously shields, partially shields, and completely transmits light, so that the intensity of the light irradiated on the photosensitive element 16 is periodically changed. Referring to fig. 4, at the same time, the grating 151 shields the first sensor 161 and the second sensor 162 to different degrees, so that the induced currents generated by the first sensor 161 and the second sensor 162 have a difference, and the induced currents are encoded according to the difference between the induced currents to generate the control information.
Referring to fig. 2, in the above structure, the motion information of the door shaft gear 21 (or door) during rotation is converted into the electrical signal information of the induced current, which mainly depends on the rotation speed of the optical grating plate 15, and during the daily use, when the door is opened or closed, the rotation speed of the door shaft gear 21 is usually within 180 °, and the optical grating plate 15 often needs to rotate several cycles to satisfy the requirement of encoding the control information by the induced current, so the transmission ratio between the door shaft gear 21 and the encoding gear 120 needs to be increased, the diameter of the encoding gear 120 is smaller than that of the door shaft gear 21, in order to ensure that the encoding gear 120 can be attached to the door shaft gear 21 and meshed with the door shaft gear 21, the cover 11 needs to be as close to the mounting shaft of the door shaft gear 21 as possible, therefore, one side of the cover 11 is recessed into the cover 11 to form the notch 110, the cover 11 is attached to the mounting shaft of the door shaft, the door shaft gear 21 is meshed with the coding gear 120, so that the door shaft gear 21 drives the grating plate 15 to rotate.
Referring to fig. 5, based on the above-mentioned structure 100 for detecting a gate opening and closing signal, the present invention further provides a method for detecting a gate opening and closing signal, where the method for detecting a gate opening and closing signal includes the following steps:
s100, the driving motor 22 drives the door shaft gear 21 to rotate, and further drives the grating plate 15 to rotate;
s200, the light source assembly 14 emits light and irradiates the photosensitive element 16 through the grating plate 15;
s300, the photosensitive element 16 receives light to generate the induced current;
s400, the encoding output elastic sheet 13 encodes the induced current to generate control information and outputs the control information to the main control chip;
and S500, the main control chip controls the driving motor 22 according to the control information.
The steps of the gate opening and closing signal detection method of the present invention are specifically explained as follows:
according to the door opening and closing signal detecting structure 100 of the present invention, the photosensitive element 16 includes the first sensor 161, the second sensor 162 and the null sensor 163, so that in step S300, three induced currents are generated by the photosensitive element 16 after receiving illumination, that is, the first sensor 161 generates a first current signal, the second sensor 162 generates a second current signal, and the null sensor 163 generates a third current signal.
The motion information of the door shaft gear 21 is judged according to the different current signals generated by the photosensitive element 16, specifically:
referring to fig. 3 and 4, according to the door opening and closing signal detecting structure 100 of the present invention, the first sensor 161, the second sensor 162 or the null sensor 163 receives light through the optical grating 15, and the rotation of the optical grating 15 causes the intensity of the light irradiated on the first sensor 161, the second sensor 162 or the null sensor 163 to change periodically, so that the current generated by the first sensor 161, the second sensor 162 or the null sensor 163 is a periodic current, and the periodic current generally has three attributes: period, amplitude and phase.
Wherein, the first sensor 161 and the second sensor 162 are both used for collecting light from the gratings 151 on the grating plate 15, and the gratings 151 are arranged at equal intervals, so the periods of the first current signal and the second current signal are the same; the grating 151 blocks the first sensor 161 and the second sensor 162 to different degrees at the same time, and then at the same time, the first current signal and the second current signal are unequal in magnitude and same in period, and the first current signal and the second current signal are different in phase when the currents at the same time are different in magnitude.
In an embodiment of the present invention, when the door shaft gear 21 rotates to open the door, the phase difference between the first current signal and the second current signal is a positive value; when the door shaft gear 21 rotates to close the door, the door shaft gear 21 drives the grating plate 15 to rotate in the opposite direction, and the phase difference between the first current signal and the second current signal is a negative value. Therefore, the rotation direction of the door shaft gear 21 can be determined from the phase difference between the first current signal and the second current signal.
The null sensor 163 is configured to collect light from the null hole 152 on the grating plate 15, in an embodiment of the present invention, the grating plate 15 is provided with a null hole 152, after the grating plate 15 rotates for one circle, the light received by the null sensor 163 changes in one cycle, the third current signal passes through one cycle, and if the third current signal does not detect a new current signal within the time of one cycle, or a certain current value continues all the time, it indicates that the grating plate 15 stops rotating at a certain time, and the door shaft gear 21 is in a stationary state.
Therefore, in step S400, the rotation direction of the door shaft gear 21 may be determined according to the phase difference between the first current signal and the second current signal, whether the door shaft gear 21 rotates may be determined according to the period of the third current signal, and in the encoding output elastic sheet 13, control information may be generated according to the changes of the first current signal, the second current signal, and the third current signal, so as to generate an electrical signal according to the motion state of the door shaft gear 21 and feed back the electrical signal to the main control chip.
Referring to fig. 4a, taking an embodiment of the present invention as an example, when the door is blocked by a person or an object during the opening process, there are necessarily: the first current signal, the second current signal and the third current signal keep a certain value and continue. The code output elastic sheet 13 generates control information according to the induced current at this time, and the main control chip brakes or makes the driving motor 22 rotate reversely according to the control information.
Referring to fig. 4b, taking an embodiment of the present invention as an example, when the door is opened and a force is applied to the door, the force applied to the door to perform the closing action inevitably includes: the phase difference between the first current signal and the second current signal changes from a positive value to a negative value after the stress moment. The code output elastic sheet 13 generates control information according to the induced current at this time, and the main control chip makes the driving motor 22 rotate reversely according to the control information, so that the door performs a closing action.
In the above embodiments, only two embodiments of encoding the induced current signal are used, and in practical applications, the relationship between the phase difference and the rotation direction between the first current signal and the second current signal or the number of null holes 152 needs to be set according to the environment in which the switch signal detection structure 100 is applied.
Referring to fig. 6, based on the door opening and closing signal detecting structure 100, the present invention provides a refrigerator 200, where the refrigerator 200 includes: the door opening and closing signal detection structure 100, the refrigerator door 201 and the refrigerating chamber 202, the refrigerator door 201 is installed on one side of the refrigerating chamber through a door shaft gear 21 in the door opening and closing signal detection structure 100, and the driving motor 22 drives the refrigerator door 201 to open or close the refrigerating chamber 202.
The door opening and closing signal detection structure 100 is characterized in that the door shaft gear 21 is connected with the coding structure 1, the light grid plate 15 is driven to rotate in the rotation process of the door shaft gear 21, the photosensitive element 16 receives the change of illumination intensity and the periodic change of generated induced current, the coding structure 1 converts the rotation action information of the door shaft gear 21 into an electric signal generated by the photosensitive element 16, the electric signal can be coded and fed back to the driving motor 22, when the door opening and closing signal detection structure 100 is applied to the refrigerator 200, the refrigerator door 201 can be stopped or the original movement direction can be changed in time when being blocked by an obstacle in the opening and closing process, and the original movement direction can be changed according to the stress direction after the stress action. The problem of among the prior art, refrigerator door 201 still moves according to former execution route after automatic switch's in-process striking barrier, causes personnel to bruise or refrigerator door 201 inner part, connecting part damage is avoided.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A door opening and closing signal detecting structure comprising: drive door body wobbling door shaft gear, drive the rotatory driving motor of door shaft gear and control driving motor's main control chip, its characterized in that, the switch door signal detection structure still includes the code structure, the code structure includes:
the door shaft gear is connected with the door shaft gear through a light source assembly, a grating plate, a photosensitive element and a coding output elastic sheet, the light source assembly is used for emitting light, the grating plate is connected with the door shaft gear, the photosensitive element is used for receiving illumination to generate induced current, and the coding output elastic sheet is used for coding the induced current to generate control information;
the light source assembly and the encoding output elastic sheet are arranged on two sides of the grating plate, and the photosensitive element is arranged on the encoding output elastic sheet and faces the grating plate;
the door shaft gear drives the grating plate to rotate, the light source assembly emits light to irradiate the photosensitive element through the grating plate, and induced current generated by the photosensitive element is sent to the main control chip after being encoded by the encoding output elastic sheet.
2. The gate signal detection structure of claim 1, wherein the coding structure further comprises: the encoder comprises a housing arranged on the encoding output elastic sheet and an encoder shaft which penetrates through the housing and is arranged on the housing;
the light source assembly is arranged on the housing and emits light to irradiate towards the interior of the housing;
the grating plate is mounted in the housing and on the encoder shaft;
the photosensitive element is located in the housing, and the coding output elastic sheet seals the housing.
3. The door opening and closing signal detection structure according to claim 2, wherein the coding structure comprises a notch located at one side of the housing and a coding gear installed at one end of the encoder shaft exposed out of the housing;
the cover housing is attached to the mounting shaft of the door shaft gear through the notch, and the coding gear is meshed with the door shaft gear to drive the grating plate to rotate.
4. The door opening and closing signal detecting structure as claimed in claim 1, wherein the light source assembly includes a lamp member which is energized to emit light and is emitted outward through the lens, and a lens which refracts the light emitted from the lamp member to form parallel light.
5. The gate opening and closing signal detecting structure according to claim 1, wherein the grating plate comprises: the zero-position hole and the grating are positioned outside the zero-position hole and distributed along the edge of the grating plate;
the photosensitive element comprises a light source for receiving light to generate an induced current: the zero-position sensor receives illumination through the zero-position hole, and the first sensor and the second sensor receive illumination through the grating.
6. The door opening and closing signal detecting structure according to claim 1, wherein the door opening and closing signal detecting structure includes a plurality of reduction gears, and the driving motor drives the door shaft gear to rotate through the reduction gears.
7. A method for detecting a door opening and closing signal, wherein the method for detecting a door opening and closing signal is implemented based on the structure for detecting a door opening and closing signal of any one of claims 1 to 6, and the method for detecting a door opening and closing signal comprises the following steps:
the driving motor drives the door shaft gear to rotate, so as to drive the grating plate to rotate;
the light source component emits light and irradiates the photosensitive element through the grating plate;
the photosensitive element receives illumination to generate induction current;
the encoding output elastic sheet encodes the induced current to generate control information and outputs the control information to the main control chip;
and the main control chip controls the driving motor according to the control information.
8. The method as claimed in claim 7, wherein the step of receiving the light from the light sensor to generate an induced current comprises:
a first sensor of the photosensitive element receives illumination to generate a first current signal;
a second sensor of the photosensitive element receives illumination to generate a second current signal;
the zero position sensor of the photosensitive element receives illumination to generate a third current signal.
9. The method for detecting the door opening and closing signal according to claim 8, wherein the encoding the induced current by the encoding output spring plate to generate the control information and outputting the control information to the main control chip comprises:
the encoding output elastic sheet judges the rotation direction of the door shaft gear according to the phase difference of the first current signal and the second current signal;
and the encoding output elastic sheet judges whether the door shaft gear is static or rotating according to the period of the third current signal.
10. A refrigerator, characterized in that the refrigerator comprises: the door opening and closing signal detecting structure, the refrigerator door and the refrigerating chamber according to any one of claims 1 to 6, wherein the refrigerator door is installed at one side of the refrigerating chamber through a door shaft gear in the door opening and closing signal detecting structure, and the driving motor drives the refrigerator door to open or close the refrigerating chamber.
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| CN201910827810.7A CN110686459B (en) | 2019-09-03 | 2019-09-03 | Door opening and closing signal detection structure and method and refrigerator |
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| CN201910827810.7A CN110686459B (en) | 2019-09-03 | 2019-09-03 | Door opening and closing signal detection structure and method and refrigerator |
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| CN113266994A (en) * | 2020-02-17 | 2021-08-17 | 青岛海尔电冰箱有限公司 | Refrigerator and refrigerator detection method |
| CN114508882A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114508880A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114508881A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114541917A (en) * | 2022-02-11 | 2022-05-27 | 海信（山东）冰箱有限公司 | Door opening and closing angle control method of refrigerator and refrigerator |
| CN114941923A (en) * | 2022-05-26 | 2022-08-26 | 合肥美的电冰箱有限公司 | Door body control method, electronic equipment, storage medium, chip and refrigeration equipment |
| CN114541917B (en) * | 2022-02-11 | 2024-05-28 | 海信冰箱有限公司 | Refrigerator door opening and closing angle control method and refrigerator |
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| CN114508882A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114508880A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114508881A (en) * | 2020-11-17 | 2022-05-17 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN114508881B (en) * | 2020-11-17 | 2023-12-12 | 海信冰箱有限公司 | Refrigerator with a refrigerator body |
| CN114541917A (en) * | 2022-02-11 | 2022-05-27 | 海信（山东）冰箱有限公司 | Door opening and closing angle control method of refrigerator and refrigerator |
| CN114541917B (en) * | 2022-02-11 | 2024-05-28 | 海信冰箱有限公司 | Refrigerator door opening and closing angle control method and refrigerator |
| CN114941923A (en) * | 2022-05-26 | 2022-08-26 | 合肥美的电冰箱有限公司 | Door body control method, electronic equipment, storage medium, chip and refrigeration equipment |
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