Electric rotary dining table capable of automatically stopping and starting when food is picked up and stopping and starting control mechanism

Abstract

The invention discloses a stop-start control mechanism of an electric dining table, which comprises an annular lane, a light shield and a signal detection processing driving trolley, and is characterized in that the annular lane is used for the signal detection processing driving trolley to walk; straight lines where front wheel shafts and rear wheel shafts of the signal detection processing driving trolleys are located intersect at the circle center of the annular lane. The light shield covers two sides and above the annular lane, and a lighting window is arranged at the top of the light shield; the lighting window is arranged in the surrounding direction of the annular lane; a first pyroelectric detector is arranged at the top of the signal detection processing driving trolley and is used for detecting a far infrared signal penetrating through the lighting window; the first pyroelectric detector is in signal connection with a signal processor, the signal processor receives and processes a detection signal and transmits processed information to a signal controller on the electric dining table, and the signal controller controls a motor control switch of a rotating table top of the electric dining table so as to control the rotating table top to be stopped and started. According to the stop-start control mechanism of the electric dining table, the number of detection signals and the processing difficulty are reduced, and interference is small.

Description

Technical Field

[0001] The invention belongs to the technical field of electric rotating dining tables, and in particular relates to an electric rotating dining table with automatic stop and start for picking up dishes and a stop and start control mechanism. Background Art

[0002] The electric rotating dining table rotates the food on the turntable and automatically turns to the diners in all directions of the dining table, making it convenient for diners to choose their favorite food. However, the continuous rotation of the dining table will affect the picking of dishes. The prior art uses two methods to control the start and stop of the rotation of the dining table to facilitate the picking of dishes: one is controlled by manual button switches and touch-sensitive switches. For example, Chinese patent CN103284469A uses multiple sets of touch switches set on the lower desktop to control the rotation and stop of the upper desktop. This type of manually controlled button switch or touch-sensitive switch requires diners to operate it by hand, which will repeatedly interrupt the meal and require the cultivation of new dining habits. The other type is non-manual control. For example, Chinese patent CN202014784U discloses an intelligent rotating dining table, which has more than 8 infrared photoelectric switches on the table surface for controlling the motor to stop working. When the diner reaches over the infrared photoelectric switch to the top of the glass rotating table to prepare to pick up food, the infrared photoelectric switch will control the motor to stop working, and when the arm withdraws from the top of the infrared photoelectric switch, the motor resumes working. Chinese patent CN214711256U discloses a rotating dining table that stops automatically when picking up food. A sensor including multiple detection units is fixed on the table body. Multiple receiving tubes and multiple light-emitting diodes are set on each detection unit. The sensor detects by receiving the light reflected by each detection unit, thereby controlling the turntable to stop or slow down, making it convenient to pick up food. Although non-manual control in the prior art will not interrupt dining due to manual control of the start and stop of the rotating tabletop, these technical solutions all require the use of a large number of transmitters and receivers, which are difficult to install and debug, have high system costs, are difficult to process detection signals, and have high power consumption; and when used in places with strong light, the incidence of ambient light will cause it to start and stop incorrectly or fail. Summary of the invention

[0003] The purpose of the present invention is to provide an electric rotating dining table with automatic start and stop for picking up food and a start-stop control mechanism, so as to reduce the number of detection probes and the difficulty of processing detection signals, and the start and stop of the tabletop rotation is not affected by ambient light.

[0004] The technical solution of the present invention is:

[0005] A stop and start control mechanism for an electric dining table, comprising a circular driveway, a light shield and a signal detection and processing driving trolley; the circular driveway is used for the signal detection and processing driving trolley to move; the light shield covers both sides and the top of the circular driveway, and a skylight is provided on the top of the light shield; the skylight is strip-shaped and is provided along the circumferential direction of the circular driveway; the straight line where the front wheel axle and the straight line where the rear wheel axle of the signal detection and processing driving trolley are located intersect at the center of the circular driveway; the signal detection and processing driving trolley is provided with a first pyroelectric detector, a signal processor and a wheel drive motor; the wheel drive motor provides the signal detection and processing driving trolley with walking power; the first pyroelectric detector The device is arranged on the top of the signal detection and processing driving trolley, including a first detection probe and a first light baffle, the first light baffle forms a lighting angle of 60-100 degrees in the front and rear directions of the first detection probe; the first detection probe is used to detect the far-infrared signal passing through the lighting window; the wavelength range of the far-infrared signal detected by the first detection probe is 9-10 microns; the first pyroelectric detector signal is connected to the signal processor; the signal processor receives and processes the detection signal, and transmits the processing information to the signal controller on the electric dining table, the signal controller controls the motor control switch of the rotating table top of the electric dining table, and the motor control switch controls the stop and start of the rotating table top.

[0006] The stop and start control mechanism of the electric dining table of the present invention is used for rotating the electric dining table, and is arranged on a fixed tabletop at the outer edge of the rotating tabletop of the rotating electric dining table. When the diner has a food picking action and his arm passes over the light shield, the signal detection and processing driving trolley walking on the circular track detects the far-infrared signal from the arm passing through the skylight through the skylight through the first pyroelectric detector, and the signal processor processes the signal and transmits the processed information to the signal controller on the electric dining table, and the signal controller controls the motor control switch of the rotating tabletop of the electric dining table to stop the rotating tabletop. When the first pyroelectric detector detects that the far-infrared signal from the arm disappears, that is, when the diner withdraws his arm, the signal processor processes the signal and transmits the processed information to the signal controller on the electric dining table, and the signal controller controls the motor control switch of the rotating tabletop of the electric dining table to continue rotating the electric rotating tabletop. During the whole process of picking up food, the diner does not need to manually control the tabletop to stop and start rotating, and the meal will not be interrupted, and there is no need to change the dining habit. In addition, by quickly walking on the circular lane, the signal detection and processing drive of the first pyroelectric detector on the vehicle moves in a circular manner to detect the far-infrared signal from the arm, so that the number of pyroelectric detectors set up is greatly reduced, thereby reducing the difficulty of processing the detection signal.

[0007] The light shield covering the circular lane shields most of the far-infrared interference signals from the environment on the left and right sides and above the first detection probe, and only the far-infrared signals generated by the diners' food-grabbing actions are accurately collected at the location of the light window on the top, effectively avoiding the wrong start-stop actions caused by interference signals. In addition, the first light shielding plate, which is set in the front and rear directions of the first detection probe to form a lighting angle of 60-100 degrees, shields the far-infrared signals from the front and rear directions of the signal detection and processing driving trolley for the first detection probe, avoiding interference from far-infrared signals in the environment other than the arms of the diners.

[0008] The first light shield can be a funnel-shaped conical plate or two straight plates. When two straight plates are used as the first light shield, the two straight plates are at an angle of 60-100 degrees and are respectively arranged in front of and behind the first detection probe, and the angle opening faces the light window.

[0009] In the present invention, the straight line where the front wheel axle of the signal detection and processing driving trolley and the straight line where the rear wheel axle are located intersect at the center of the circular driveway. This setting method enables the signal detection and processing driving trolley to automatically have a circular route when walking, and the walking trajectory coincides with the circular driveway. There is no need to use external force to control its running trajectory, which simplifies the structure and reduces unnecessary energy consumption and noise.

[0010] The far-infrared signal wavelength detected by the first pyroelectric detector in the present invention is in the range of 9-10 microns, that is, the wavelength range of far-infrared radiation of the human body. Interference signals in other bands are set outside the detection range, which effectively avoids interference signals in lights and natural light, is less likely to cause erroneous start and stop actions, and is more conducive to use in brightly lit high-end restaurants and near windows with strong light.

[0011] A light-transmitting cover can be installed on the light-transmitting window to prevent dust and facilitate cleaning.

[0012] Preferably, it includes a signal detection trolley; a second pyroelectric detector is arranged on the top of the signal detection trolley, the second pyroelectric detector includes a second detection probe and a second light baffle, the second light baffle forms a lighting angle of 60-100 degrees in the front and rear directions of the second detection probe; the second detection probe is used to detect the far-infrared signal passing through the lighting window; the wavelength range of the far-infrared signal detected by the second pyroelectric detector is 9-10 microns; the second detection probe signal is connected to the signal processor; the signal detection trolley walks on the circular track, and the signal detection trolley and the signal detection processing driving trolley are connected with a rigid rod.

[0013] The stop and start control mechanism of the electric dining table is provided with a signal detection trolley and connected to the signal detection processing driving trolley with a rigid rod. During operation, the signal detection processing driving trolley drives the signal detection trolley to move synchronously on the circular lane. The second pyroelectric detector arranged on the top of the signal detection trolley and the first pyroelectric detector jointly detect the diners' food-grabbing action, which appropriately increases the detection density. Therefore, the walking speed of the signal detection processing driving trolley can be appropriately reduced. This technical solution is particularly suitable for large or extra-large rotating electric dining tables. The transmission line of the electric energy required by the second pyroelectric detector and the data line used for communication transmission can be arranged along the rigid rod. The second pyroelectric detector transmits the detected signal to the signal processor on the signal detection processing driving trolley through communication, and the signal processor uniformly processes and transmits it to the signal controller.

[0014] More preferably, there are one or more signal detection vehicles, and the signal detection vehicles are connected by rigid rods. The plurality of signal detection vehicles transmit the detection signals to the signal processor through their respective second pyroelectric detectors, and the signal processor processes the signals uniformly and transmits the processing information to the signal controller, which is connected to the motor control switch of the rotating tabletop of the electric dining table to control the stop and start of the rotating tabletop.

[0015] This method of using rigid poles and lines in series can fix the signal detection and processing drive trolley and the signal detection trolley into a circular combination, so that the signal detection and processing drive trolley and the signal detection trolley move synchronously on the circular lane, thereby increasing the detection frequency of far-infrared light signals of the human body. At this time, the walking speed of the signal detection and processing drive trolley can be appropriately reduced.

[0016] Preferably, a power supply and signal interface and two photoelectric limit switches are provided on the inner wall of the light shield; the power supply and signal interface signal is connected to the signal controller; the two photoelectric limit switches are electrically connected to an external DC power supply, and the power supply and signal interface is electrically connected to the two photoelectric limit switches respectively; the signal detection and processing drive trolley moves between the two photoelectric limit switches; a power supply and signal cable is provided on the signal detection and processing drive trolley; one end of the power supply and signal cable is signal-connected to the signal processor and electrically connected to the wheel drive motor; the other end of the power supply and signal cable is connected to the power supply and signal interface; the photoelectric limit switch is used to detect the signal detection and processing drive trolley, and when the signal detection and processing drive trolley is detected, the power supply polarity of the drive motor on the signal detection and processing drive trolley is changed through the power supply and signal interface, so that the signal detection and processing drive trolley moves in reverse.

[0017] Preferably, the signal detection and processing driving trolley is provided with a mobile power supply.

[0018] Preferably, power supply carbon brushes are arranged on the left and right sides of the signal detection and processing driving trolley, and conductive rails are arranged on the two side walls of the light shield, and the power supply carbon brushes are in elastic electrical contact with the conductive rails.

[0019] Preferably, two parallel trolley limiting rails are provided on the circular track, which are used to limit the wheels of the signal detection and processing driving trolley to move between the two trolley limiting rails.

[0020] Preferably, the light shield is arched. The light shield may also be in other shapes, such as a rectangular or square cross section.

[0021] The present invention also provides an electric rotating dining table with automatic stop and start for picking up food, comprising a fixed table top and a rotating table top, wherein the fixed table top is provided with a stop and start control mechanism of the electric dining table, and the stop and start control mechanism of the electric dining table is arranged around the fixed table top at the outer edge of the rotating table top.

[0022] The beneficial effects of the present invention are:

[0023] The stop and start control mechanism of the electric dining table of the present invention uses a pyroelectric detector installed on a fast-moving signal detection and processing driving trolley to move and detect the far-infrared signal of the diner's arm when picking up food, and controls the stopping and starting of the rotating table top, thereby reducing the number of detectors and the difficulty of processing the detection signal, and is not affected by ambient light. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the stop and start control mechanism of the electric dining table of the present invention.

[0025] Figure 2 It is a partial cross-sectional view of the stop and start control mechanism of the electric dining table of the present invention.

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the signal detection and processing driving vehicle in Example 1.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure when the chassis of the signal detection and processing driving vehicle in Examples 1 and 2 is upward.

[0028] Figure 5 The diagram is a top view of the electric rotating dining table with automatic start and stop for picking up food according to the present invention.

[0029] Figure 6 for Figure 5 AA section view.

[0030] Figure 7 This is a schematic diagram of the stop and start working principle of the rotating tabletop of the electric dining table in Example 1.

[0031] Figure 8 This is a schematic diagram of the structure of the signal detection vehicle in Example 2.

[0032] Fig. 9 It is a cross-sectional view of the circular driveway and the sunshade in Example 2.

[0033] Fig.10 This is a schematic diagram of the partial structure of the photoelectric limit switch installed on the inner wall of the light shield in Example 2.

[0034] Fig.11 Schematic diagram of the structure of the signal detection and processing driving vehicle in Example 3.

[0035] Fig.12 It is a cross-sectional view of the circular driveway and the sunshade in Example 3.

[0036] Fig.13 for Fig.12 Schematic diagram of the partial structure of the conductive rail installed on one side of the middle sunshade.

[0037] In the figure:

[0038] 1. Fixed tabletop; 2. Rotating tabletop; 3. Stop and start control mechanism of electric dining table; 31. Circular driveway; 311. Trolley limit track; 32. Sunshade; 321. Skylight window; 322. Translucent cover; 323. Power supply and signal interface; 324. Conductive rail; 33. Signal detection and processing to drive the trolley; 331. Chassis; 332. Front wheel; 3321. Front wheel axle; 333. Rear wheel; 3331. Rear wheel axle; 3332. Fixing card; 334. Wheel drive motor; 335. The first pyroelectric detector; 3351, the first detection probe; 3352, the first light baffle one; 3353, the first light baffle two; 3354, the wireless transmitter; 336, the power supply carbon brush; 34, the rigid rod; 35, the power supply and signal cable; 36, the photoelectric limit switch; 37, the signal detection trolley; 371, the second pyroelectric detector; 3711, the second detection probe; 3712, the second light baffle one; 3713, the second light baffle two; 4, the signal processor; 5, the signal controller. DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with the embodiments and drawings.

[0040] Example 1

[0041] Figure 1 It is a structural schematic diagram of the stop and start control mechanism of the electric dining table of the present invention. Figure 2 It is a partial cross-sectional view of the stop and start control mechanism of the electric dining table of the present invention. Figure 3 It is a schematic diagram of the three-dimensional structure of the signal detection and processing driving vehicle in this embodiment.

[0042] like Figure 1 , Figure 2 As shown, the stop and start control mechanism of the electric dining table of the present invention includes a circular lane 31, a shading cover 32 and a signal detection and processing driving trolley 33. The circular lane 31 is used for the signal detection and processing driving trolley 33 to move. The shading cover 32 covers both sides and the top of the circular lane 31. The top of the shading cover 32 is provided with a skylight 321; the skylight 321 is in a strip shape and is provided along the circumferential direction of the circular lane 31. Figure 3 , Figure 4 As shown, the straight line where the front wheel axle 3321 of the signal detection and processing driving trolley 33 is located is not parallel to the straight line where the rear wheel axle 3331 is located. When the signal detection and processing driving trolley 33 is walking on the circular lane 31, the straight line where the front wheel axle 3321 is located and the straight line where the rear wheel axle 3331 is located intersect at the center of the circular lane 31. Such a design makes the walking track of the signal detection and processing driving trolley 33 on the circular lane 31 automatically coincide with the circular lane 31. The signal detection and processing driving trolley 33 is provided with a first pyroelectric detector 335, a signal processor 4 and a wheel driving motor 334; the wheel driving motor 334 provides walking power for the signal detection and processing driving trolley 33; the first pyroelectric detector 335 is arranged on the top of the signal detection and processing driving trolley 33, and includes a first detection probe 3351 and a first light shielding plate. The first detection probe 3351 is used to detect the far-infrared signal passing through the lighting window 321; the wavelength range of the far-infrared signal detected by the first pyroelectric detector 335 is 9-10 microns. The first light baffle is two plates arranged in the front and rear directions of the signal detection and processing driving trolley 33, namely, the first light baffle 1 3352 and the first light baffle 2 3353. The first light baffle 1 3352 and the first light baffle 2 3353 are arranged vertically in front and behind the first detection probe 3351, and form an angle of 60-100 degrees to the lighting window 321, thereby forming a lighting angle of 60-100 degrees. Such a lighting angle constrains the lighting range and avoids interference from far-infrared light other than the arm of the person picking up the food. For example, if the first light baffle is not provided, the far-infrared light generated by the non-picking action of the diners at the neighboring seats may be captured to form interference. The signal of the first detection probe 3351 is connected to the signal processor 4, and the signal processor 4 receives and processes the detection signal, and transmits the processing information to the signal controller 5 on the electric dining table. The signal controller 5 controls the motor control switch of the rotating table top of the electric dining table, and the motor control switch controls the stop and start of the rotation action of the rotating table top.

[0043] Figure 5 The top view of the electric rotating dining table with automatic start and stop for picking up food assembled with the stop and start control mechanism of the electric dining table of the present invention is shown in FIG. Figure 6 for Figure 5 AA section view. Figure 5 , Figure 6 As shown, the electric rotating dining table with automatic stop and start for picking up food of the present invention comprises a fixed table top 1 at a lower layer and a rotating table top 2 at an upper layer, the fixed table top 1 is provided with a stop and start control mechanism 3 of the electric dining table of the present invention, and the stop and start control mechanism 3 of the electric dining table is arranged around the fixed table top 1 at the outer edge of the rotating table top 2.

[0044] Figure 7 The diagram is a schematic diagram of the stop and start working principle of the rotating tabletop of the electric dining table in this embodiment. The stop and start working principle of the rotating tabletop of the electric dining table of the present invention is as follows: when diners sit around the electric rotating table with automatic stop and start for picking up dishes of the present invention to eat, in order to facilitate diners to choose their favorite food, the rotating tabletop 2 is in a rotating state, and the dishes and other foods rotate on the rotating tabletop 2. When the diner has the action of picking up food, his extended arm reaches the top of the stop and start control mechanism 3 of the electric dining table, and the signal detection and processing driving trolley 33 walking on the circular lane 31 passes through. After the first pyroelectric detector 335 on it detects the far-infrared signal from the arm through the lighting window 321, the signal processor 4 connected thereto receives and processes the detection signal, and transmits the processing information to the signal controller 5 on the electric dining table, and the signal controller 5 controls the motor control switch of the rotating tabletop 2 of the electric dining table, and the motor control switch controls the rotating tabletop 2 to stop rotating, so that diners can take food conveniently. When the diner takes the food and withdraws his arm, the far-infrared signal from the lighting window 321 disappears. After the first pyroelectric detector 335 detects the disappearance of the far-infrared signal, the signal controller 5 loses signal control and the rotating table top 2 rotates again. During the whole process of picking up the food, the diner does not need to manually control the stop or start of the rotating table top 2, which will not interrupt the diner's meal and does not require the diner to deliberately change his dining habits. The first pyroelectric detector on the signal detection and processing driving car that moves quickly on the circular lane moves around to detect the far-infrared signal from the arm, which greatly reduces the number of pyroelectric detectors set, thereby reducing the difficulty of processing the detection signal.

[0045] Example 2

[0046] When the rotating table area is large, in order to capture all possible diners' food-picking signals in time and reduce the speed of the signal detection and processing driving car, the density of far-infrared signal collection can be increased according to the size of the table circumference. Figure 1 , Figure 2 As shown, a signal detection trolley 37 is provided in the stop and start control mechanism of the electric dining table. Figure 8 FIG. 1 is a schematic diagram of the three-dimensional structure of the signal detection vehicle in this embodiment. Figure 8As shown, a second pyroelectric detector 371 is disposed on the top of the signal detection vehicle 37, and the second pyroelectric detector 371 includes a second detection probe 3711 and two second light shields, namely, a second light shield 1 3712 and a second light shield 2 3713. The second light shield 1 3712 and the second light shield 2 3713 are vertically disposed in front of and behind the second detection probe 3711, and the second light shield 1 3712 and the second light shield 2 3713 form an angle of 60-100 degrees to the daylighting window 321, thereby forming a daylighting angle of 60-100 degrees. Such a daylighting angle constrains the daylighting range and avoids interference from far-infrared light outside the arms of the person picking up the food. The second detection probe 3711 is used to detect the far infrared signal passing through the lighting window 321; the wavelength range of the far infrared signal detected by the second pyroelectric detector 371 is 9-10 microns; the signal of the second detection probe 3711 is connected to the signal processor 4; the signal detection trolley 37 walks on the circular lane 31, and the signal detection trolley 37 is connected to the signal detection processing driving trolley 33 by a rigid rod 34, such as Figure 2 Preferably, the straight line where the front wheel axle of the signal detection vehicle 37 is located is not parallel to the straight line where the rear wheel axle is located, and when the signal detection vehicle 37 travels on the circular lane 31, the straight line where the front wheel axle is located and the straight line where the rear wheel axle is located intersect at the center of the circular lane 31.

[0047] The stop and start control mechanism of the electric dining table of this embodiment is provided with a signal detection trolley 37 and a signal detection processing driving trolley 33 connected by a rigid rod 34. During operation, the signal detection processing driving trolley 33 drives the signal detection trolley 37 to move synchronously on the circular lane 31. The second pyroelectric detector 371 and the first pyroelectric detector 335 move together on the circular lane 31 to detect the diners' food-grabbing action, which appropriately increases the detection density, so the walking speed of the signal detection processing driving trolley can be appropriately reduced. This technical solution is particularly suitable for large or super-large rotating electric dining tables. The transmission line of the electric energy required by the second pyroelectric detector 371 and the data line used for communication transmission can be set along the rigid rod 34. The second pyroelectric detector 371 transmits the detected signal to the signal processor 4 on the signal detection processing driving trolley 33 through communication, and the signal processor 4 uniformly processes and transmits it to the signal controller 5. The electric energy required by the second pyroelectric detector 371 is obtained by the signal detection processing driving trolley 33. It is more preferred to use multiple signal detection carts 37, which are connected by rigid rods 34. This method of collecting signals by active motion can greatly reduce the number of pyroelectric detectors even when using signal detection carts, thereby greatly reducing the complexity of signal processing.

[0048] Fig. 9is a cross-sectional view of the circular driveway and the sunshade in this embodiment; Fig.10 The schematic diagram of the partial structure of the photoelectric limit switch installed on the inner wall of the light shield in this embodiment. The inner wall of the light shield 32 used in this embodiment is provided with a power supply and signal interface 323 and two photoelectric limit switches 36, such as Fig. 9 , Fig.10 As shown, the power supply and signal interface 323 is connected to the signal controller 5 by signal; the two photoelectric limit switches 36 are electrically connected to the external DC power supply, and the power supply and signal interface 323 is electrically connected to the two photoelectric limit switches 36 respectively; the signal detection and processing driving trolley 33 moves between the two photoelectric limit switches 36; the signal detection and processing driving trolley 33 is provided with a power supply and signal cable 35; one end of the power supply and signal cable 35 is connected to the signal processor and electrically connected to the wheel drive motor 334; the other end of the power supply and signal cable 35 is connected to the power supply and signal interface 323; the photoelectric limit switch 36 is used to detect the signal detection and processing driving trolley 33, and when the signal detection and processing driving trolley 33 is detected, the power supply polarity of the wheel drive motor 334 on the signal detection and processing driving trolley 33 is changed through the power supply and signal interface 323, so that the signal detection and processing driving trolley 33 moves in the reverse direction. The electric energy required for the signal detection and processing driving trolley 33 is provided by connecting the power supply and signal cable 35 with the power supply and signal interface 323.

[0049] In this embodiment, one signal detection processing driving trolley and two signal detection trolleys are running on the circular lane 31. A fixing card 3332 is provided on the chassis 331 of the signal detection processing driving trolley, and the rigid rod 34 is fixed by the fixing card 3332 to connect one signal detection processing driving trolley and two signal detection trolleys together to form a ring, such as Figure 4As shown, the center of this ring coincides with the center of the circular lane 31. The signal detection and processing driving trolley 33 is connected to the power supply and signal interface 323 through the power supply and signal cable 35 to connect the DC power and output the control signal to the signal controller 5. The signal detection and processing driving trolley 33 walks on the circular lane 31, and when it moves to the position of the photoelectric limit switch 36, it is detected by the photoelectric limit switch 36. The photoelectric limit switch 36 immediately changes the power supply polarity of the wheel drive motor 334 on the signal detection and processing driving trolley 33 through the power supply and signal interface 323, so that the wheel drive motor 334 of the signal detection and processing driving trolley 33 changes the rotation direction, thereby causing the signal detection and processing driving trolley 33 to move in the reverse direction. In addition, under the action of the rigid rod, the signal detection trolley 37 also performs synchronous forward or reverse movement. In this way, the signal detection processing driving trolley 33 reciprocates between the two photoelectric limit switches, driving the signal detection trolley to reciprocate, so that a first detection probe and multiple second detection probes move together to cyclically detect the food information of diners around the electric rotating dining table. The number of signal detection trolleys can also be reasonably set according to the diameter of the electric dining table.

[0050] Preferably, a light-transmitting cover 322 is installed on the light window 321 to facilitate keeping the light window clean. Preferably, the light shield 32 is arched, and can also be made into a square cross-section.

[0051] Example 3

[0052] The difference between this embodiment and embodiment 2 lies in the power supply mode and specific structure of the signal detection and processing driving vehicle, and the specific structure on the light shield. Fig.11 This is a schematic diagram of the structure of the signal detection and processing driving vehicle in this embodiment. Fig.12 It is a cross-sectional view of the circular driveway and the sunshade in this embodiment.

[0053] like Fig.11 , Fig.12As shown, the signal detection and processing driving trolley 33 used in this embodiment is provided with power supply carbon brushes 336 on the left and right sides, and the two side walls of the light shield 32 are provided with conductive rails 324, and the power supply carbon brushes 336 are in elastic electrical contact with the conductive rails 324; the top of the signal detection and processing driving trolley 33 is also provided with a wireless transmitter 3354, which is used to transmit the processing signal of the signal processor 4 to the signal controller 5 on the electric dining table by wireless means. In this embodiment, when the signal detection and processing driving trolley 33 is walking on the circular lane 31, the power supply carbon brushes 336 on both sides of the signal detection and processing driving trolley 33 are against the left and right sides of the circular lane 31, and are in elastic electrical contact with the conductive rails 324, and the conductive rails 324 are connected to an external power supply to power the signal detection and processing driving trolley 33. After the signal detection and processing driving trolley 33 detects the far-infrared signal from the arm passing through the skylight 321 through the first pyroelectric detector 335, the signal processor 4 connected thereto receives and processes the detection signal, and transmits the processed information to the signal controller 5 on the electric dining table via the wireless transmitter 3354. The signal controller 5 controls the motor control switch of the rotating table top 2 of the electric dining table.

[0054] The preferred solution is: two parallel trolley limiting rails 311 are arranged on the circular track 31, such as Fig.12 As shown, the front wheels 332 and the rear wheels 333 used to limit the signal detection and processing driving trolley 33 to move between the two trolley limiting rails 311. This can reduce the left and right deviation of the signal detection and processing driving trolley 33 due to external interference during operation, and avoid damage to the light shield 32 caused by the left and right deviation of the signal detection and processing driving trolley 33. The shape of the trolley limiting rail can be as follows Figure 5 The convex ridges shown are arranged on the outer edges of the front wheel 332 and the rear wheel 333 to limit the left and right deviation of the front wheel 332 and the rear wheel 333.

[0055] Example 4

[0056] The only difference from Example 3 is that this embodiment is powered by a mobile power source. A mobile power source, such as a rechargeable battery, is provided on the signal detection and processing driving trolley 33 to provide energy for the wheel driving motor 334 of the signal detection and processing driving trolley 33 to move, and at the same time provide energy for the first pyroelectric detector 335 and the second pyroelectric detector 371.

[0057] It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other. In addition, the above are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

Claims

1. A stop and start control mechanism for an electric dining table, characterized in that: Includes a circular track, a light shield, and a signal detection and processing driving car; The circular lane is used for the signal detection and processing driving trolley to move; the sunshade covers the two sides and the top of the circular lane, and a skylight is arranged on the top of the sunshade; the skylight is in the shape of a strip and is arranged along the circumferential direction of the circular lane; the straight line where the front wheel axle and the straight line where the rear wheel axle of the signal detection and processing driving trolley are located intersect at the center of the circular lane; the signal detection and processing driving trolley is provided with a first pyroelectric detector, a signal processor and a wheel drive motor; the wheel drive motor provides the signal detection and processing driving trolley with walking power; the first pyroelectric detector is arranged on the top of the signal detection and processing driving trolley The electric dining table comprises a first detection probe and a first light baffle, wherein the first light baffle forms a lighting angle of 60-100 degrees in the front and rear directions of the first detection probe; the first detection probe is used to detect the far-infrared signal passing through the lighting window; the wavelength range of the far-infrared signal detected by the first detection probe is 9-10 microns; the first pyroelectric detector signal is connected to the signal processor; the signal processor receives and processes the detection signal, and transmits the processing information to the signal controller on the electric dining table, the signal controller controls the motor control switch of the rotating table top of the electric dining table, and the motor control switch controls the stop and start of the rotating table top.

2. The stop and start control mechanism of the electric dining table as claimed in claim 1, characterized in that: It comprises a signal detection trolley; a second pyroelectric detector is arranged on the top of the signal detection trolley, the second pyroelectric detector comprises a second detection probe and a second light baffle, the second light baffle forms a lighting angle of 60-100 degrees in the front and rear directions of the second detection probe; the second detection probe is used to detect far-infrared signals passing through the lighting window; the wavelength range of the far-infrared signal detected by the second pyroelectric detector is 9-10 microns; the signal of the second detection probe is connected to the signal processor; the signal detection trolley travels on the circular track, and the signal detection trolley and the signal detection processing driving trolley are connected by a rigid rod.

3. The stop and start control mechanism of the electric dining table as claimed in claim 2, characterized in that: There are one or more signal detection vehicles, and the signal detection vehicles are connected by rigid rods.

4. The stop and start control mechanism of the electric dining table as claimed in claim 3, characterized in that: A power supply and signal interface and two photoelectric limit switches are provided on the inner wall of the light shield; the power supply and signal interface signal is connected to the signal controller; the two photoelectric limit switches are electrically connected to an external DC power supply, and the power supply and signal interface is electrically connected to the two photoelectric limit switches respectively; the signal detection and processing driving trolley moves between the two photoelectric limit switches; a power supply and signal cable is provided on the signal detection and processing driving trolley; one end of the power supply and signal cable is signal-connected to the signal processor and electrically connected to the wheel drive motor; the other end of the power supply and signal cable is connected to the power supply and signal interface; the photoelectric limit switch is used to detect the signal detection and processing driving trolley, and when the signal detection and processing driving trolley is detected, the power supply polarity of the driving motor on the signal detection and processing driving trolley is changed through the power supply and signal interface, so that the signal detection and processing driving trolley moves in reverse.

5. The stop and start control mechanism of the electric dining table as claimed in any one of claims 1 to 3, characterized in that: The signal detection and processing driving trolley is provided with a mobile power supply.

6. The stop and start control mechanism of the electric dining table as claimed in any one of claims 1 to 3, characterized in that: Power supply carbon brushes are arranged on the left and right sides of the signal detection and processing driving trolley, and conductive rails are arranged on the two side walls of the light shield, and the power supply carbon brushes are in elastic electrical contact with the conductive rails.

7. The stop and start control mechanism of the electric dining table as claimed in any one of claims 1 to 3, characterized in that: Two parallel trolley limiting rails are arranged on the circular track, which are used to limit the wheels of the signal detection and processing driving trolley to move between the two trolley limiting rails.

8. The stop and start control mechanism of the electric dining table as claimed in claim 1, characterized in that: The light shield is arched.

9. An electric rotating dining table with automatic stop and start when picking up food, comprising a fixed tabletop and a rotating tabletop, characterized in that: The fixed table top is provided with a stop and start control mechanism of the electric dining table according to any one of claims 1 to 8, and the stop and start control mechanism of the electric dining table is arranged around the fixed table top at the outer edge of the rotating table top.

Images