Detection device for automatic cooker and automatic cooker

Abstract

The utility model provides a cooking machine and a detection device used for the cooking machine, the cooking machine comprises a rack and a pot body, the pot body is installed on the rack, the detection device comprises a position sensor, the position sensor is provided with a third contact pin and a first contact pin; the main control board is provided with a COM4 port and a COM1 port, a third switch composed of the COM4 and the third contact pin and a first switch composed of the COM1 and the first contact pin are connected to the main control loop in series, the on-off state of the main control loop is controlled through the on-off state of the third switch and the first switch, and the first posture position of the pot body is determined according to the on-off state; when the third contact pin is in contact with the COM4, the third switch is switched on, and otherwise, the third switch is switched off; when the third switch and the first switch are connected, the on-off state is a conducting state; and when the third switch and / or the first switch are / is cut off, the on-off state is an off state. The utility model solves the technical problems in the prior art that the Hall value of the initial position needs to be calibrated manually, and time and labor are wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic control, in particular to a detection device for a cooking machine and a cooking machine. Background Art

[0002] An automatic cooking machine is a smart cooking device. When using an automatic cooking machine for cooking, the cooking utensils (e.g., the pot) and the stirring assembly need to be adjusted to the corresponding positions according to different cooking operations. Most of the existing methods for finding the initial position of the pot body are to use the motor Hall sensor count, calibrate the Hall value of the initial position at the factory, and power on and run to the specified position. This method requires manual calibration, which is time-consuming and labor-intensive, and cannot be universally used when replacing different pot bodies. Utility Model Content

[0003] The utility model solves the technical problem in the prior art that the Hall value of the initial position needs to be manually calibrated, which is time-consuming and labor-intensive.

[0004] In order to solve the above problems, the utility model provides a detection device for a cooking machine, the cooking machine comprises a frame and a pot body, the pot body is installed on the frame, and the detection device comprises: a position sensor, the position sensor is provided with a third contact pin and a first contact pin; a main control board, the main control board is provided with a COM4 port and a COM1 port, the COM4 port and the third contact pin constitute a third switch, the COM1 port and the first contact pin constitute a first switch, and the third switch and the first switch are connected in series to a main control circuit, wherein the on-off state of the main control circuit is controlled by the on-state of the third switch and the first switch, and the first posture position of the pot body is determined according to the on-off state; wherein, when the third contact pin is in contact with the COM4 port, the third switch is on, otherwise the third switch is off; when the first contact pin is in contact with the COM1 port, the first switch is on, otherwise the first switch is off; when the third switch and the first switch are on, the on-off state is a conducting state; when the third switch and / or the first switch are off, the on-off state is a disconnected state.

[0005] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: since the existing method for finding the initial position of the pot body is mostly to use the motor Hall sensor count, calibrate the Hall value of the initial position at the factory, and power on and run to the specified position, this method requires manual calibration, which is time-consuming and labor-intensive, and cannot be universal when replacing different pot bodies. The present application provides a detection device for a cooking machine, which can automatically detect the first posture position of the pot body without manual detection, saving time and labor and improving the accuracy of detection. The detection device includes a position sensor and a main control board. The position sensor is provided with a third contact pin and a first contact pin. The main control board is provided with a COM4 port and a COM1 port. The COM4 port and the third contact pin constitute a third switch, and the COM1 port and the first contact pin constitute a first switch. In the present application, the first posture position of the pot body is judged by the on-state of the third switch and the first switch. No manual detection is required, which saves time and effort and can improve the accuracy of detection. At the same time, it can adapt to various pot body models. Replacement and change of the pot body will not affect the detection device from finding the initial position. Therefore, manual calibration is not required after the pot body is replaced; the on-state of the third switch is judged by whether the third contact pin is in contact with the COM4 port, and the on-state of the first switch is judged by whether the first contact pin is in contact with the COM1 port. The third switch and the first switch are connected in series on the main control circuit, which is set on the main control board. The on-off state of the main control circuit can be controlled by the on-state of the third switch and the first switch: only when the third switch and the first switch are both on, the on-off state of the main control circuit is the on state; when only one of the third switch and the first switch is on, the on-off state of the main control circuit is the off state. The first posture position of the pot body is determined according to the on-off state: when the on-off state is the on state, the main control circuit can output a signal (the signal is the first signal at this time) to the main control board, and the main control board determines that the pot body is currently in the first position through the received first signal, and the first posture position is the first position; when the on-off state is the off state, the main control circuit cannot output a signal to the main control board, and determines that the pot body is currently in the target position, and the first posture position is the target position.

[0006] In one example of the utility model, a second contact pin is further provided on the position sensor; a COM2 port is further provided on the main control board, the COM2 port and the second contact pin constitute a second switch, and the second switch is connected in parallel with the first switch, wherein the second switch and the first switch are not connected at the same time, and the on-off state of the main control circuit is controlled by the on-state of the third switch, the first switch and the second switch; wherein, when the second contact pin is in contact with the COM2 port, the second switch is connected, otherwise the second switch is disconnected; when the third switch is connected, when the second switch or the first switch is connected, the on-off state is the on state; when the third switch is disconnected, the on-off state is the off state.

[0007] Compared with the prior art, the technical effect achieved by adopting the technical solution is as follows: the second contact pin is preferably used to form a second switch with the COM2 port on the main control board, which is connected to the main control circuit, and the second switch is connected in parallel with the first switch and in series with the third switch. In order to avoid a short circuit in the main control circuit, the second switch and the first switch are not connected at the same time. Therefore, the on-off state of the main control circuit can be controlled according to the on-state of the third switch, the first switch and the second switch on the main control circuit: when the third switch is cut off, regardless of the on-state of the first switch and the second switch, the on-off state of the main control circuit is the off state; when the third switch is turned on, the on-off state of the main control circuit is judged according to the on-state of the first switch and the second switch: when the first switch or the second switch is turned on, the on-off state of the main control circuit is the on state; when the first switch and the second switch are both cut off, the on-off state of the main control circuit is the off state. The first posture position of the pot body is determined according to the on-off state: when the on-off state is the off state, the main control circuit cannot output a signal to the main control board, and it is judged that the pot body is currently in the target position, and the first posture position is the target position; when the on-off state is the on state, the first posture position of the pot body is determined according to the connection state of the first switch and the second switch: when the first switch is turned on, the main control circuit can output a signal (the signal is the first signal at this time) to the main control board, and the main control board judges that the pot body is currently in the first position through the received first signal, and the first posture position is the first position; when the second switch is turned on, the main control circuit can output a signal (the signal is the second signal at this time) to the main control board, and the main control board judges that the pot body is currently in the second position through the received second signal, and the first posture position is the second position.

[0008] On the other hand, the utility model also provides a cooking machine, comprising: a frame, the frame comprising a first frame, a second frame and a third frame, and a first accommodating space is formed between the first frame and the second frame, and a second accommodating space is formed between the second frame and the third frame; a pot body, the pot body is connected to the side of the first frame away from the first accommodating space through an output shaft; a detection device such as the one in Example 1, the detection device is arranged in the second accommodating space; a transmission shaft, the transmission shaft is connected to the pot body and the position sensor, and the rotation of the transmission shaft drives the rotation of the pot body and the position sensor.

[0009] Compared with the prior art, the technical effects achieved by adopting the technical scheme are as follows: the frame includes a first frame, a second frame and a third frame, a first accommodating space is formed between the first frame and the second frame, and a second accommodating space is formed between the second frame and the third frame; the pot body is installed on the first frame and away from the side of the first accommodating space, which can be easily removed and installed according to the user's choice; the transmission shaft and the position sensor and the main control board in the detection device are all arranged in the second accommodating space, the transmission shaft is connected to the second frame, the main control board is installed on the third frame, and the transmission shaft connects the pot body and the position sensor, and the position sensor contacts the main control board through three contact pins; the position sensor is installed on the transmission shaft in the cooking machine, the first contact pin, the second contact pin and the third contact pin of the position sensor are connected to the transmission shaft, and the three contact pins can rotate around the first axis where the transmission shaft is located under the drive of the transmission shaft, and during the rotation of the transmission shaft, the first contact pin, the second contact pin and the third contact pin make circular motion on the main control board at their respective radii.

[0010] In an example of the present invention, the cooking machine further includes: a driving motor, which is mounted on the second frame and is used to drive the transmission shaft to rotate; and a transmission assembly, which connects the driving motor and the transmission shaft.

[0011] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the drive motor is installed on the second frame, and is arranged in the second accommodation space with the transmission shaft, the drive motor is connected to the transmission shaft, and the drive motor is used to drive the rotation of the transmission shaft. The transmission assembly is installed on the second frame, but is arranged in the first accommodation space, and the transmission assembly, the drive motor, and the transmission shaft are placed in two different accommodation spaces respectively to avoid affecting the drive motor and the transmission shaft. If the posture of the pot body in the initial position needs to be changed, it is only necessary to adjust the main control board that the contact pin contacts, and rotate it so that the position where the two contact pins are disconnected from the system ground at the same time is aligned with the required position.

[0012] In one example of the utility model, the cooking machine also includes: a Hall sensor, which is arranged in the driving motor; a signal processing circuit, which is arranged on the main control board, and the signal processing circuit is used to control the Hall sensor; a motor driving circuit, which is arranged on the main control board, and the motor driving circuit is used to control the driving motor.

[0013] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: a Hall sensor is arranged in the driving motor, and the driving motor is used to trigger the Hall sensor, the Hall sensor is controlled to output a Hall signal through a signal processing circuit, and the movement of the driving motor is controlled through a motor driving circuit, and the signal processing circuit and the motor driving circuit are both arranged on a main control board. The main control board can be a controller, and the controller is connected to a position sensor, a Hall sensor, a motor driving circuit and a signal processing circuit. The controller is used to receive and process the first information output by the position sensor. The first information output by the position sensor is processed by the controller to generate a signal that can be recognized by the motor driving circuit, and the movement state of the driving motor is controlled by controlling the motor driving circuit. When the driving motor rotates, a Hall signal of the Hall sensor can be triggered every time it rotates a certain angle, and the Hall signal can be received and processed by the controller.

[0014] In an example of the present utility model, the transmission assembly includes: a first transmission member, the first transmission member is connected to the driving motor; and a second transmission member, the second transmission member is connected to the first transmission member and the transmission shaft.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the driving motor drives the transmission shaft to rotate around the first axis thereof through the first transmission member and the second transmission member.

[0016] In an example of the present invention, the cooking machine further includes: a reinforcement member, which is connected to the frame and fixed to the first accommodating space and the second accommodating space.

[0017] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the reinforcement members are fixed to the four corners of the second accommodating space and the corners of the first accommodating space to improve the stability of the frame.

[0018] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0019] (1) The first posture position of the pot body can be automatically detected, specifically, the first posture position of the pot body is determined by the on-state of the third switch and the first switch, without the need for manual detection, which saves time and effort and can improve the accuracy of detection;

[0020] (2) The second contact pin is preferably used to form a second switch with the COM2 port on the main control board, and controls the on / off state of the main control circuit according to the on / off state of the third switch, the first switch and the second switch on the main control circuit;

[0021] (3) It will adapt to various pot models. The replacement and change of the pot will not affect the detection device's search for the initial position, so manual calibration is not required after the pot is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a detection device for a cooking machine provided in Embodiment 1 of the utility model.

[0023] Figure 2 for Figure 1 A structural schematic diagram of the relationship between the three contact pins on the position sensor and the three ports on the main control board when the first posture position of the middle pot body is in the first position.

[0024] Figure 3 for Figure 1 A structural schematic diagram of the relationship between the three contact pins on the position sensor and the three ports on the main control board when the first posture position of the middle pot body is in the second position.

[0025] Figure 4 for Figure 1 A structural schematic diagram of the relationship between the three contact pins on the position sensor and the three ports on the main control board when the first posture position of the middle pot body is at the target position.

[0026] Figure 5 This is a structural schematic diagram of a cooking machine provided in Embodiment 2 of the present utility model.

[0027] Figure 6 This is a schematic diagram of the system structure of the main control board in the first embodiment of the utility model.

[0028] Figure 7 This is a schematic diagram of the system structure of the motor drive circuit and the Hall sensor in the second embodiment of the present utility model.

[0029] Figure 8 This is a schematic diagram of the system structure of the position sensor in the first embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 111. first contact pin; 112. second contact pin; 113. third contact pin; 120. main control board; 121. COM1 port; 122. COM2 port; 124. COM4 port; 130. transmission shaft; 10. cooking machine; 200. frame; 201. first accommodating space; 202. second accommodating space; 210. first frame; 220. second frame; 230. third frame; 300. pot body; 400. drive motor; 410. transmission assembly; 411. first transmission member; 412. second transmission member. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] [Example 1]

[0034] See also Figure 1 , which is a detection device for a cooking machine 10 provided by the first embodiment of the utility model, the cooking machine 10 includes a frame 200 and a pot body 300, the pot body 300 is installed on the frame 200, and the detection device includes: a position sensor, the position sensor is provided with a third contact pin 113 and a first contact pin 111; a main control board 120, the main control board 120 is provided with a COM4 port 124 and a COM1 port 121, the COM4 port 124 and the third contact pin 113 constitute a third switch, the COM1 port 121 and the first contact pin 111 constitute a first switch, and the third switch and the first contact pin 113 constitute a third switch. A switch is connected in series to the main control circuit, wherein the on-off state of the main control circuit is controlled by the on-state of the third switch and the first switch, and the first posture position of the pot body 300 is determined according to the on-off state; wherein, when the third contact pin 113 and the COM4 port 124 are in contact, the third switch is connected, otherwise the third switch is disconnected; when the first contact pin 111 and the COM1 port 121 are in contact, the first switch is connected, otherwise the first switch is disconnected; when the third switch and the first switch are connected, the on-off state is the on state; when the third switch and / or the first switch are disconnected, the on-off state is the off state.

[0035] In a specific embodiment, since the existing method of finding the initial position of the pot body 300 is mostly to use the motor Hall sensor count, calibrate the Hall value of the initial position at the factory, and power on and run to the specified position, this method requires manual calibration, which is time-consuming and labor-intensive, and cannot be universal when replacing different pot bodies 300. The present application provides a detection device for a cooking machine 10, which can automatically detect the first posture position of the pot body 300 without manual detection, saving time and labor and improving the accuracy of detection. The detection device includes a position sensor and a main control board 120, the position sensor is provided with a third contact pin 113 and a first contact pin 111, the main control board 120 is provided with a COM4 port 124 and a COM1 port 121, the COM4 port 124 and the third contact pin 113 constitute a third switch, and the COM1 port 121 and the first contact pin 111 constitute a first switch. In the present application, the first posture position of the pot body 300 is judged by the connection state of the third switch and the first switch, without the need for manual detection, saving time and effort and being able to improve the accuracy of detection; the connection state of the third switch is judged by whether the third contact pin 113 and the COM4 port 124 are in contact, and the connection state of the first switch is judged by whether the first contact pin 111 and the COM1 port 121 are in contact. The third switch and the first switch are connected in series on the main control circuit, which is set on the main control board 120. The on-off state of the main control circuit can be controlled by the on-state of the third switch and the first switch: only when the third switch and the first switch are both on, the on-off state of the main control circuit is the on state; when only one of the third switch and the first switch is on, the on-off state of the main control circuit is the off state. The first posture position of the pot body 300 is determined according to the on-off state: when the on-off state is the on state, the main control circuit can output a signal (the signal is the first signal at this time) to the main control board 120, and the main control board 120 determines that the pot body 300 is currently in the first position through the received first signal, and the first posture position is the first position; when the on-off state is the off state, the main control circuit cannot output a signal to the main control board 120, and it is determined that the pot body 300 is currently in the target position, and the first posture position is the target position.

[0036] Among them, when the third contact pin 113 is in contact with the COM4 port 124, the connection state of the third switch is that the third switch is on, and when the third contact pin 113 is not in contact with the COM4 port 124, the third switch is off; when the first contact pin 111 is in contact with the COM1 port 121, the connection state of the first switch is that the first switch is on, and when the first pin is not in contact with the COM1 port 121, the first switch is off.

[0037] Preferably, in this embodiment, the on state of the third switch may be always on. When the third switch is always on, the on-off state of the main control circuit can be controlled only by the on-state of the first switch, thereby determining the first posture position of the pot body 300, which can further reduce the detection steps of the detection device and improve the detection efficiency.

[0038] Furthermore, a second contact pin 112 is provided on the position sensor; a COM2 port 122 is also provided on the main control board 120, the COM2 port 122 and the second contact pin 112 constitute a second switch, and the second switch is connected in parallel with the first switch, wherein the second switch and the first switch are not connected at the same time, and the on-off state of the main control circuit is controlled by the on-state of the third switch, the first switch and the second switch; wherein, when the second contact pin 112 and the COM2 port 122 are in contact, the second switch is connected, otherwise the second switch is disconnected; when the third switch is connected, when the second switch or the first switch is connected, the on-off state is the on state; when the third switch is disconnected, the on-off state is the off state.

[0039] Specifically, the position sensor is further provided with a second contact pin 112. The second contact pin 112 is preferably configured to form a second switch together with the COM2 port 122 on the main control board 120, which is connected to the main control circuit. The second switch is connected in parallel with the first switch and in series with the third switch. In order to avoid a short circuit in the main control circuit, the second switch and the first switch are not connected at the same time. Therefore, the on-off state of the main control circuit can be controlled according to the on-state of the third switch, the first switch and the second switch on the main control circuit: when the third switch is turned off, the on-off state of the main control circuit is in the off state regardless of the on-state of the first switch and the second switch; when the third switch is turned on, the on-off state of the main control circuit is judged according to the on-state of the first switch and the second switch: when the first switch or the second switch is turned on, the on-off state of the main control circuit is the on state; when the first switch and the second switch are both turned off, the on-off state of the main control circuit is the off state. The first posture position of the pot body 300 is determined according to the on-off state: when the on-off state is the off state, the main control circuit cannot output a signal to the main control board 120, and it is judged that the pot body 300 is currently in the target position, and the first posture position is the target position; when the on-off state is the on state, the first posture position of the pot body 300 is determined according to the connection state of the first switch and the second switch: when the first switch is turned on, the main control circuit can output a signal (the signal is the first signal at this time) to the main control board 120, and the main control board 120 judges that the pot body 300 is currently in the first position through the received first signal, and the first posture position is the first position; when the second switch is turned on, the main control circuit can output a signal (the signal is the second signal at this time) to the main control board 120, and the main control board 120 judges that the pot body 300 is currently in the second position through the received second signal, and the first posture position is the second position.

[0040] When the second contact pin 112 is in contact with the COM2 port 122 , the second switch is in the on state, and when the second contact pin 112 is not in contact with the COM2 port 122 , the second switch is in the off state.

[0041] Preferably, in this embodiment, the third switch may be always on. When the third switch is always on, the first posture position of the pot body 300 can be determined by the on-states of the first switch and the second switch, which can further reduce the detection steps of the detection device and improve the detection efficiency.

[0042] Preferably, see Figure 2-Figure 4 , are schematic diagrams of the relationship between the three contact pins (the first contact pin 111, the second contact pin 112 and the third contact pin 113) on the position sensor and the three ports (COM1, COM2 and COM4) on the main control board 120 when the pot body 300 is at the first position, the second position and the target position, respectively. The three contact pins on the position sensor and the three ports on the main control board 120 can be set as shown in the above three figures: COM1 is a first arc with a radius of R1, and the center angle of the first arc is angle A; COM2 is a second arc with a radius of R2, and the center angle of the second arc is angle B; COM4 is a third arc with a radius of R3, and the center angle of the third arc is angle C; wherein the centers of the first arc, the second arc and the third arc coincide, and the centers of the circles fall on the first axis where the transmission shaft 130 is located, so that the first contact pin 111, the second contact pin 112 and the third contact pin 113 rotate around the center with their respective radii, and come into contact with COM1, COM2 and COM4 respectively, to ensure the independence between the contact pins and the ports. It can be seen from the figure that the first switch and the second switch are not turned on at the same time, wherein ∠A+∠B<360°, ∠C=360°; ∠A is angle A, ∠B is angle B, and ∠C is angle C. Preferably, R1>R2>R3.

[0043] See also Figure 8 , which is a schematic diagram of the system structure of the position sensor in the first embodiment of the present utility model: when the first contact pin 111 of the position sensor is connected to the system ground and the second contact pin 112, the third contact pin 113 and the system ground are disconnected, CD_1 is at a low level, CD_2 and CD_3 are at a high level, U9 is disconnected, U10 and U12 are connected, U8A inputs a high level, U8B and U8C input a low level signal, and after the signal is reversed by U8, the position signal at this time is: CD_1_3 is at a low level, CD_2_3 and CD_3_3 are at a high level, and the position signal is received by the main control board 120 and processed, and it is determined that the pot body 300 is in the first position at this time, wherein the first position in this embodiment is the positive position.

[0044] Similarly, when the second contact pin 112 of the position sensor is connected to the system ground and the first contact pin 111, the third contact pin 113 and the system ground are disconnected, CD_2 is at a low level, CD_1 and CD_3 are at a high level, U10 is disconnected, U9 and U12 are connected, U8B inputs a high level, U8A and U8C input a low level signal, and after the signal is reversed by U8, the position signal at this time is: CD_2_3 is a low level, CD_1_3 and CD_3_3 are high levels. The position signal is received and processed by the main control board 120, and it is determined that the pot body 300 is in the second position at this time, wherein the second position in this embodiment is a negative position.

[0045] Similarly, when the first contact pin 111, the second contact pin 112, and the third contact pin 113 of the position sensor are all disconnected from the system ground, CD_1, CD_2, and CD_3 are all at high levels, U9, U10, and U12 are turned on, and U8A, U8B, and U8C input low-level signals. After the signal is reversed by U8, the position signal at this time is: CD_1_3, CD_2_3, and CD_3_3 are all high levels. The position signal is received and processed by the main control board 120, and it is determined that the pot body 300 is at the target position at this time, where the target position in this embodiment is the system initial position.

[0046] [Example 2]

[0047] See also Figure 5 The present embodiment provides a cooking machine 10, which includes: a frame 200, a pot body 300, a detection device as in the first embodiment, and a transmission shaft 130. The frame 200 includes a first frame body 210, a second frame body 220, and a third frame body 230, and a first accommodating space 201 is formed between the first frame body 210 and the second frame body 220, and a second accommodating space 202 is formed between the second frame body 220 and the third frame body 230; the pot body 300 is connected to a side of the first frame body 210 away from the first accommodating space 201 through an output shaft; the detection device is arranged in the second accommodating space 202; the transmission shaft 130 connects the pot body 300 and the position sensor, and the rotation of the transmission shaft 130 drives the rotation of the pot body 300 and the position sensor.

[0048] Specifically, the frame 200 includes a first frame 210, a second frame 220 and a third frame 230. A first accommodating space 201 is formed between the first frame 210 and the second frame 220, and a second accommodating space 202 is formed between the second frame 220 and the third frame 230. The pot body 300 is installed on the first frame 210 and away from the side of the first accommodating space 201, which can be easily removed and installed according to the user's choice. The transmission shaft 130 and the position sensor in the detection device and the main control board 120 are all arranged in the second accommodating space 202, the transmission shaft 130 is connected to the second frame 220, and the main control board 120 is installed on the second frame 220. The position sensor is mounted on the third frame 230, and the transmission shaft 130 connects the pot body 300 and the position sensor, and the position sensor contacts the main control board 120 through three contact pins; the position sensor is installed on the transmission shaft 130 in the cooking machine 10, and the first contact pin 111, the second contact pin 112 and the third contact pin 113 of the position sensor are connected to the transmission shaft 130, and the three contact pins can rotate around the first axis line where the transmission shaft 130 is located under the drive of the transmission shaft 130. During the rotation of the transmission shaft 130, the first contact pin 111, the second contact pin 112 and the third contact pin 113 make circular motions on the main control board 120 at their respective radii.

[0049] At the same time, an output shaft (not marked in the figure) is provided on the pot body 300, which connects the pot body 300 and the transmission shaft 130 so that the transmission shaft 130 can drive the pot body 300 to rotate, and the first axis where the transmission shaft 130 is located and the second axis where the output shaft of the pot body 300 is located are arranged colinearly.

[0050] Preferably, the position sensor is specifically three stylus position sensors, on which a first stylus 111, a second stylus 112 and a third stylus 113 are provided, and the first posture position of the pot body 300 can be obtained by processing the first information of the position sensor.

[0051] Furthermore, the cooking machine 10 also includes: a driving motor 400 and a transmission assembly 410 . The driving motor 400 is mounted on the second frame 220 , and the driving motor 400 is used to drive the transmission shaft 130 to rotate; the transmission assembly 410 connects the driving motor 400 and the transmission shaft 130 .

[0052] Specifically, the drive motor 400 is mounted on the second frame 220, and is disposed in the second accommodation space 202 with the transmission shaft 130. The drive motor 400 is connected to the transmission shaft 130, and the drive motor 400 is used to drive the rotation of the transmission shaft 130. The transmission assembly 410 is mounted on the second frame 220, but is disposed in the first accommodation space 201. The transmission assembly 410, the drive motor 400, and the transmission shaft 130 are respectively placed in two different accommodation spaces to avoid affecting the drive motor 400 and the transmission shaft 130.

[0053] Furthermore, the cooking machine 10 also includes: a Hall sensor, a signal processing circuit and a motor drive circuit, the Hall sensor is arranged in the drive motor 400; the signal processing circuit is arranged on the main control board 120, and the signal processing circuit is used to control the Hall sensor; the motor drive circuit is arranged on the main control board 120, and the motor drive circuit is used to control the drive motor 400.

[0054] Specifically, a Hall sensor is provided in the drive motor 400, and the drive motor 400 is used to trigger the Hall sensor. The Hall sensor is controlled to output a Hall signal through a signal processing circuit. The movement of the drive motor 400 is controlled by a motor drive circuit. The signal processing circuit and the motor drive circuit are both provided on the main control board 120. The main control board 120 may be a controller, which is connected to a position sensor, a Hall sensor, a motor drive circuit and a signal processing circuit. The controller is used to receive and process first information output by the position sensor. The first information output by the position sensor is processed by the controller to generate a signal that can be recognized by the motor drive circuit. The movement state of the drive motor 400 is further controlled by controlling the motor drive circuit. When the drive motor 400 rotates, a Hall signal of the Hall sensor may be triggered every time it rotates a certain angle. The Hall signal may be received and processed by the controller. In this application, see Figure 6 1 is a schematic diagram of the system structure of the main control board 120 in the first embodiment of the present invention. The controller is the main control board 120 installed on the third frame 230, and may specifically include: a single-chip computer system.

[0055] Furthermore, the transmission assembly 410 includes: a first transmission member 411 and a second transmission member 412 , the first transmission member 411 is connected to the driving motor 400 ; the second transmission member 412 is connected to the first transmission member 411 and the transmission shaft 130 .

[0056] Specifically, the transmission assembly 410 includes a first transmission member 411 and a second transmission member 412. The first transmission member 411 is connected to the drive motor 400, and the second transmission member 412 is connected to the first transmission member 411 and the transmission shaft 130. The drive motor 400 drives the transmission shaft 130 to rotate around the first axis thereof through the first transmission member 411 and the second transmission member 412.

[0057] Furthermore, the cooking machine 10 further includes: a reinforcement member, which is connected to the frame 200 and fixed to the first accommodating space 201 and the second accommodating space 202 .

[0058] Specifically, the reinforcement members are fixed to four corners of the second accommodating space 202 and corners of the first accommodating space 201 to improve the stability of the rack 200 .

[0059] Preferably, see Figure 7, which is a schematic diagram of the system structure of the motor drive circuit and the Hall sensor in the second embodiment of the utility model. The detailed driving method of the motor drive circuit is: when the single-chip microcomputer needs to drive the motor 400 to rotate forward, the Hin1_3 pin outputs a PWM pulse signal, Lin1_3 outputs a high level, and the Hin2_3 and Lin2_3 pins simultaneously output a low level. After the signal passes through the U5 chip, the original 3V signal is boosted to a 5V signal, so that the Hin1_5 pin outputs a 5V PWM pulse signal, and Lin1_5 outputs a 5V high level, and the 3V and 5V power supplies are isolated to ensure that the signals in the two power domains do not affect each other and generate high-frequency noise. The pulse signal of Hin1_5 passes through the U3 chip again and is boosted to 30V, and is output through HO_M1. The high level of Lin1_5 is reversed to a low level by the U3 chip and output through LO_M1. Similarly, the low level signal of Lin2_5 is reversed by U4 and output through LO_M2, and then boosted to a 12V high level. At this time, HO_M1 is a PWM pulse signal, LO_M1 and HO_M2 are low level, and LO_M2 is high level, so that Q2 is intermittently turned on, Q1 and Q4 are turned off, and Q3 is turned on. The current flows from the positive pole of the first power supply through Q2, flows into M1, flows out through the motor through M2, and flows into the power ground after passing through Q3, forming a closed loop to make the motor rotate forward. When speed regulation is required, the speed of the drive motor 400 can be accelerated or slowed down by simply changing the duty cycle of the PWM pulse. Chips U3 and U4 also have the functions of raising the voltage to drive the switches of Q1, Q2, Q3, and Q4 and preventing Q2 and Q4 or Q1 and Q3 from being turned on at the same time, causing the power supply to short-circuit.

[0060] Similarly, when the drive motor 400 needs to reverse, the Hin2_3 pin outputs a PWM pulse signal, Lin2_3 outputs a high level, and the Hin1_3 and Lin1_3 pins simultaneously output a low level. After the signal passes through the U5 chip, the original 3V signal is boosted to a 5V signal, so that the Hin2_5 pin outputs a 5V PWM pulse signal, and Lin2_5 outputs a 5V high level, and the 3V and 5V power supplies are isolated to ensure that the signals in the two power domains do not affect each other and generate high-frequency noise. The pulse signal of Hin2_5 passes through the U4 chip and is boosted to 30V again, and output through HO_M2. The high level of Lin2_5 is reversed to a low level by the U4 chip and output through LO_M2. Similarly, the low level signal of Lin1_5 is reversed by U3 and output through LO_M1, and then boosted to a 12V high level. At this time, HO_M2 is a PWM pulse signal, LO_M2 and HO_M1 are low level, LO_M1 is high level, so that Q1 is intermittently turned on, Q2 and Q3 are turned off, Q4 is turned on, and the current flows from the positive pole of the first power supply through Q1, flows in from M2, flows out through the motor through M1, flows into the power ground after passing through Q4, and forms a closed loop to reverse the motor. When speed regulation is required, the speed of the drive motor 400 can be accelerated or slowed down by simply changing the duty cycle of the PWM pulse.

[0061] When the drive motor 400 rotates, each rotation of a certain angle can trigger a Hall signal of the Hall sensor. The Hall signal can be received and processed by the controller, so that the running distance of the drive motor 400 can be calculated, with a minimum of 1 Hall value: when the drive motor 400 rotates, the Hall signal is input to HR_A_5 and HR_B_5 through COM2 port 122, and passes through a pair of capacitors and resistors to remove the instantaneous jitter signal and reduce noise. Then, it passes through chip U6 to reduce the 5V Hall signal to 3V, and input to HR_A_3 and HR_B_3 to be processed by the controller (the single-chip microcomputer in this embodiment). In addition to reducing the voltage and adapting to the single-chip microcomputer power domain, U6 can also isolate the 3V and 5V power supplies to prevent external interference sources from being transmitted to the single-chip microcomputer and interfering with the single-chip microcomputer's parsing of the Hall signal.

[0062] In the control of the pot body 300 of the cooking machine 10, a certain point in the entire posture control process is taken as the initial position, the front of the initial position is defined as the posture positive position, and the back is defined as the posture negative position. Figure 8, which is a schematic diagram of the system structure of the position sensor in the second embodiment of the utility model. The stylus position sensor used in this application makes the first stylus 111 contact the system ground (negative pole of the power supply) when the pot body 300 is in the positive position, and the second stylus 112 is disconnected from the system ground. The opposite is true when the pot body 300 is in the negative position; when the pot body 300 is in the initial position, the first stylus 111 and the second stylus 112 are both disconnected from the system ground. The three stylus position sensors are connected to the circuit through COM4, ​​and are first pulled up to 5V through a resistor, so that when the stylus is not connected to the system ground, CD_1, CD_2, and CD_3 are ensured to be 5V high level. U9, U10, and U12 step down the initial 5V signal of the stylus to a 3V signal that can be processed by the single-chip microcomputer, and isolate the 3V and 5V power supplies so that the external 5V noise will not affect the signal processing of the single-chip microcomputer. If the initial position of the pot body 300 needs to be changed, it is only necessary to adjust the main control board 120 that the contact pins contact, and rotate it so that the positions where the two contact pins are disconnected from the system ground are aligned to the required positions.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A detection device for a cooking machine (10), the cooking machine (10) comprising a frame (200) and a pot body (300), the pot body (300) being mounted on the frame (200), characterized in that: The detection device comprises: A position sensor, wherein the position sensor is provided with a third contact pin (113) and a first contact pin (111); A main control board (120), wherein the main control board (120) is provided with a COM4 port (124) and a COM1 port (121), wherein the COM4 port (124) and the third contact pin (113) constitute a third switch, and the COM1 port (121) and the first contact pin (111) constitute a first switch, and the third switch and the first switch are connected in series to a main control circuit, wherein the on-off state of the main control circuit is controlled by the on-off state of the third switch and the first switch, and the first posture position of the pot body (300) is determined according to the on-off state; When the third contact pin (113) is in contact with the COM4 port (124), the third switch is turned on, otherwise the third switch is turned off; when the first contact pin (111) is in contact with the COM1 port (121), the first switch is turned on, otherwise the first switch is turned off; when the third switch and the first switch are connected, the on-off state is the on-state; when the third switch and / or the first switch are turned off, the on-off state is the off-state.

2. The detection device according to claim 1, characterized in that: The position sensor is also provided with a second contact pin (112); The main control board (120) is also provided with a COM2 port (122), the COM2 port (122) and the second contact pin (112) constitute a second switch, and the second switch is connected in parallel with the first switch, wherein the second switch and the first switch are not connected at the same time, and the on / off state of the main control circuit is controlled by the on state of the third switch, the first switch and the second switch; When the second contact pin (112) is in contact with the COM2 port (122), the second switch is turned on, otherwise the second switch is turned off; when the third switch is turned on, when the second switch or the first switch is turned on, the on-off state is the on state; when the third switch is turned off, the on-off state is the off state.

3. A cooking machine (10), characterized in that: The cooking machine (10) comprises: A frame (200), the frame (200) comprising a first frame body (210), a second frame body (220) and a third frame body (230), wherein a first accommodating space (201) is formed between the first frame body (210) and the second frame body (220), and a second accommodating space (202) is formed between the second frame body (220) and the third frame body (230); A pot body (300), wherein the pot body (300) is connected to a side of the first frame (210) away from the first accommodating space (201) via an output shaft; The detection device according to any one of claims 1 to 2, wherein the detection device is arranged in the second containing space (202); A transmission shaft (130), wherein the transmission shaft (130) is connected to the pot body (300) and the position sensor, and the rotation of the transmission shaft (130) drives the rotation of the pot body (300) and the position sensor.

4. The cooking machine (10) according to claim 3, characterized in that: The cooking machine (10) further comprises: a driving motor (400), the driving motor (400) being mounted on the second frame (220), and the driving motor (400) being used to drive the transmission shaft (130) to rotate; A transmission assembly (410), wherein the transmission assembly (410) connects the drive motor (400) and the transmission shaft (130).

5. The cooking machine (10) according to claim 4, characterized in that: The cooking machine (10) further comprises: A Hall sensor, the Hall sensor being arranged in the drive motor (400); A signal processing circuit, the signal processing circuit is arranged on the main control board (120), and the signal processing circuit is used to control the Hall sensor; A motor drive circuit is provided on the main control board (120), and is used to control the drive motor (400).

6. The cooking machine (10) according to claim 4, characterized in that: The transmission assembly (410) comprises: A first transmission member (411), the first transmission member (411) being connected to the driving motor (400); A second transmission member (412), wherein the second transmission member (412) connects the first transmission member (411) and the transmission shaft (130).

7. The cooking machine (10) according to claim 3, characterized in that: The cooking machine (10) further comprises: A reinforcement member, the reinforcement member is connected to the frame (200), and the reinforcement member is fixed to the first accommodating space (201) and the second accommodating space (202).

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