Teaching aids and teaching systems

Abstract

The present invention provides a teaching aid and a teaching system, belonging to the technical field of teaching supplies. The teaching aid comprises: a shell, a main circuit board and a plurality of first sensor modules, wherein the main circuit board is arranged inside the shell; a first surface of the shell is provided with a plurality of first grooves, respectively used to store a plurality of first sensor modules, wherein the first sensor module comprises a first shell and a first substrate, a sensor and an interface are arranged on the first substrate, the first substrate is arranged in the first shell, the first shell is detachably connected to the first groove, and the first substrate is electrically connected to the main circuit board. According to the technical solution provided in an embodiment of the present invention, the teaching aid achieves the goal of personalized replacement of sensors through sensor modules of the same size and grooves for accommodating the sensor modules.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching supplies, and in particular to a teaching tool and a teaching system. Background Art

[0002] Sensors are a chapter in physics experiment teaching, which requires students to understand common sensors and their applications, and appreciate the convenience brought by the application of sensors. Therefore, sensor teaching aids came into being to better combine classroom theoretical knowledge with practice. However, current sensor teaching aids directly integrate sensors into a piece of hardware, which cannot be replaced and cannot meet personalized needs.

[0003] Therefore, developing a sensor teaching aid with replaceable sensors has become an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present invention provide a teaching tool and a teaching system, which enable the teaching tool to achieve the goal of personalized sensor replacement.

[0005] One aspect of the present invention provides a teaching aid, comprising: a shell, a main circuit board and a plurality of first sensor modules, wherein the main circuit board is arranged inside the shell; a first surface of the shell is provided with a plurality of first grooves, respectively used to store the plurality of first sensor modules, wherein the first sensor module comprises a first outer shell and a first substrate, a sensor and an interface are arranged on the first substrate, the first substrate is arranged in the first shell, the first shell is detachably connected to the first groove, and the first substrate is electrically connected to the main circuit board.

[0006] In one embodiment of the present invention, a first hole is provided at the bottom of the first groove, and the teaching aid further includes: a plurality of connecting wires, one end of each of the plurality of connecting wires is connected to the interface of the corresponding first sensor module, and the other end of the connecting wire is connected to the interface on the main circuit board, and the first hole is used to accommodate the connecting wire.

[0007] In one embodiment of the present invention, the teaching tool further includes: a first cover, wherein the first cover is provided with holes corresponding to the plurality of first grooves, the size of the holes being smaller than the size of the first grooves, so that the first sensor module can be encapsulated when the first cover is placed on the first surface of the shell.

[0008] In one embodiment of the present invention, the first surface is further provided with Lego particles, and the bottom surface of the first cover is further provided with Lego holes, so that the first cover and the shell are fixed by plugging through the Lego holes and the Lego particles.

[0009] In one embodiment of the present invention, the teaching aid further includes: a second cover including holes corresponding to some of the plurality of first grooves, and the surface of the second cover also includes content for explaining the application of the first sensor module composition in some of the first grooves.

[0010] In one embodiment of the present invention, at least one second hole is provided on the first shell, and the first groove further includes: a first support platform and a second support platform, the first support platform and the second support platform are arranged at the bottom of the first groove; at least one fixing column is arranged on the first support platform, and is used to be inserted into at least one second hole in the first shell to fix the first shell; the height of the first support platform is higher than the height of the second support platform.

[0011] In one embodiment of the present invention, the first groove further includes at least one supporting column, the at least one supporting column is located on the second supporting platform, and the height of the supporting column is lower than the height of the first supporting platform.

[0012] In one embodiment of the present invention, a fourth groove is provided at the bottom of the first shell, an isolation column is provided in the center of the fourth groove, and the first surface of the shell also includes Lego particles for plugging and fixing the first sensor module with the fourth groove.

[0013] In one embodiment of the present invention, multiple first grooves have the same size, the first housings of multiple first sensor modules have the same size, the first substrates of multiple first sensor modules have the same size, different types of first sensor modules are stored in the multiple first grooves, and different types of first sensor modules have different connection interfaces.

[0014] In one embodiment of the present invention, a second groove is further provided on the first surface of the shell, and the second groove is used to store the core processor module. The teaching aid also includes: a core circuit board, which is also located in the shell and connected to the main circuit board; at least one magnet is provided at the bottom of the second groove, which is used to fix the core processor module by magnetic force, and the second groove also includes a third hole, and the core processor module is electrically connected to the core circuit board through the third hole.

[0015] In one embodiment of the present invention, the teaching aid further comprises a motor interface for connecting the motor to the main circuit board, and the motor interface is located on the side of the shell and connected to the main circuit board.

[0016] In one embodiment of the present invention, the first surface of the shell is further provided with a plurality of third grooves, each of the third grooves is used to store the second sensor module, wherein the size of the second sensor module is larger than the size of the first sensor module, the second sensor module comprises a second shell and a second substrate, the second shell accommodates the second substrate, the second substrate is provided with a sensor and an interface, and the second shell is detachably connected to the third groove; the side wall of the third groove is provided with an elastic protrusion, and the elastic protrusion is used to press the side wall of the second shell when the second shell is placed in the third groove.

[0017] In one embodiment of the present invention, the first housing includes a first shell and a second shell, and the first shell and the second shell are cooperatively connected to accommodate the first substrate.

[0018] In one embodiment of the present invention, the first substrate includes a blank area; the first shell includes a first side wall and a second side wall, and the inner walls of the first side wall and the second side wall respectively include a first card slot and a second card slot; the second shell includes a third side wall and a fourth side wall, and the inner walls of the third side wall and the fourth side wall respectively include a third card slot and a fourth card slot, and when the first shell and the second shell are connected, the blank area is accommodated in the first card slot, the second card slot, the third card slot and the fourth card slot to form a first sensor module.

[0019] Another aspect of the present invention provides a teaching system, characterized in that it includes: the teaching aid of any one of the first aspect of the present invention; and a host connected to the teaching aid and used to program the core processor module of the teaching aid.

[0020] In one embodiment of the present invention, the host is further used to receive parameters detected by at least one sensor module of the teaching aid, process the parameters, and display the processing results.

[0021] According to the technical solution provided by the embodiment of the present invention, the teaching aid achieves the goal of personalized sensor replacement through sensor modules of the same size and grooves for accommodating the sensor modules.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1It is a schematic three-dimensional structural diagram of a teaching tool according to an embodiment of the present invention.

[0025] Figure 2 is a schematic three-dimensional structural diagram of a first sensor module according to an embodiment of the present invention.

[0026] Figure 3 is a schematic three-dimensional structural diagram of a first groove according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic three-dimensional structural diagram of a teaching tool according to another embodiment of the present invention.

[0028] Figure 5 It is a schematic composition diagram of a teaching system according to an embodiment of the present invention.

[0029] The markings in the above drawings are as follows: shell 110, first surface 111, first groove 112, third groove 113, main circuit board 120, interface 121, first cover 130, hole 131, base 140, second cover 150, second groove 160, first hole 170, third hole 171, fixing column 172, first supporting platform 173, supporting column 174, second supporting platform 175, first sensor module 210, first shell 211, first substrate 212, sensor 213, teaching system 500, teaching aids 510, second sensor module 511, host 520. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiments of the present invention will be described below with reference to the accompanying drawings. Wherever possible, the same or similar parts mentioned in the various parts of the drawings will be marked with the same reference numerals.

[0032] Figure 1 is a schematic three-dimensional structural diagram of a teaching tool according to an embodiment of the present invention, Figure 2 is a schematic three-dimensional structural diagram of a first sensor module according to an embodiment of the present invention.

[0033] According to an embodiment of the present invention, the teaching aid includes: a shell 110, a main circuit board 120 and a plurality of first sensor modules 210, wherein the main circuit board 120 is arranged inside the shell 110; a first surface 111 of the shell 110 is provided with a plurality of first grooves 112, which are respectively used to store the plurality of first sensor modules 210, wherein the first sensor module 210 includes a first shell 211 and a first substrate 212, a sensor 213 and an interface are provided on the first substrate 212, the first substrate 212 is arranged in the first shell 211, the first shell 211 is detachably connected to the first groove 112, and the first substrate 212 is electrically connected to the main circuit board 120.

[0034] Specifically, the first sensor module 210, as a modular sensor, may have different interface types according to different types of sensor components. For example, the first sensor module 210 may be a red LED, a yellow LED, a green LED, a full-color LED, a buzzer, a posture sensor, a digital tube, a touch sensor, a grayscale sensor, a sound sensor, a Hall sensor, a photosensitive sensor, a rotary potentiometer, or a temperature sensor. Among them, the red LED, the yellow LED, the green LED, the full-color LED, the buzzer, the posture sensor, the digital tube, and the touch sensor are digital sensors, and use digital interfaces; the grayscale sensor, the sound sensor, the Hall sensor, the photosensitive sensor, and the rotary potentiometer are analog sensors, and use analog interfaces; the temperature sensor is an I2C (Inter-Integrated Circuit, I2C bus) sensor, and uses an I2C interface.

[0035] Furthermore, according to the different interface types of the first sensor module 210, the interface 121 provided on the main circuit board 120 can also be divided into a digital interface, an analog interface and an I2C interface. Among them, each interface 121 can be connected to a first sensor module 210 with the same interface type but different sensor component types. For example, a touch sensor is stored in a first groove 112, and the touch sensor is electrically connected to the main circuit board 120 through a digital interface. After the touch sensor is taken out of the first groove 112, a posture sensor can be placed in the first groove 112. Because the interface of the posture sensor is also a digital interface, the posture sensor can also be electrically connected to the main circuit board 120 through a digital interface. In addition, the first surface 111 can be the top surface of the housing 110 of the teaching aid, or it can be a side surface or a bottom surface, and it can be one surface or multiple surfaces. The sizes of multiple first grooves 112 can be the same or different.

[0036] In addition, the main circuit board 120 can be fixed inside the shell 110 by screws or gluing, and the teaching aids can also include a base 140. The shell 110 and the base 140 can also be fixed by screws to encapsulate the main circuit board 120 in the space formed by the shell 110 and the base 140. Figure 1 In the embodiment, the base 140, the first cover 130, the third groove 113, the hole 131 and other components not involved in the above embodiments can be used as optional components of the teaching tool.

[0037] According to the technical solution provided by the embodiment of the present invention, the teaching aid achieves the goal of personalized sensor replacement through sensor modules of the same size and grooves for accommodating the sensor modules.

[0038] Figure 3 is a schematic three-dimensional structural diagram of a first groove according to an embodiment of the present invention.

[0039] Optionally, as another embodiment, a first hole 170 is provided at the bottom of the first groove 112, and the teaching aids may further include: a plurality of connecting wires, one end of each of the plurality of connecting wires is connected to the interface of the corresponding first sensor module 210, and the other end of the connecting wire is connected to the interface 121 on the main circuit board 120, and the first hole 170 is used to accommodate the connecting wires.

[0040] Specifically, the bottom of the first groove 112 may be provided with a first hole 170 and a third hole 171, wherein the first hole 170, as described above, may be used to accommodate a connection line, and the first hole 170 is located at the bottom of the first groove 112, and may be the bottom surface of the first groove 112, or may be the side surface of the first groove 112. The third hole 171 may expose the connection line interface 121 on the main circuit board 120, so that the connection line can be connected to the main circuit board 120 through the third hole 171.

[0041] The setting of the first hole 170 can accommodate a longer connecting wire, and the setting of the third hole 171 can connect one end of the connecting wire to the main circuit board 120 and the other end to the first sensor module 210, thereby realizing communication between the first sensor module 210 and the main circuit board 120.

[0042] Optionally, as another embodiment, the teaching aid further includes: a first cover 130, wherein the first cover 130 is provided with holes 131 corresponding to the plurality of first grooves 112, and the size of the holes 131 is smaller than the size of the first grooves 112, so that the first sensor module 210 is encapsulated when the first cover 130 is placed on the first surface 111 of the shell 110.

[0043] Specifically, Figure 1 and Figure 2As shown, the setting of the first cover 130 can make the first sensor module 210 encapsulated in the first groove 112, effectively preventing the loss of the first sensor module 210. In addition, the setting of the plurality of holes 131 on the first cover 130 can expose the operating part of the first sensor module 210 in the first groove 112, thereby facilitating the operation of the first sensor module 210. For example, the first sensor module 210 is a touch sensor, and the holes on the first cover 130 expose the touch part of the touch sensor, which is convenient for touch operation of the sensor. In addition, when the first surface 111 is the top surface of the housing 110 of the teaching aid, the first cover 130 can be called a top cover.

[0044] Optionally, as another embodiment, the first surface 111 is further provided with Lego particles, and the bottom surface of the first cover 130 is further provided with Lego holes, so that the first cover 130 and the shell 110 are plugged and fixed through the Lego holes and the Lego particles.

[0045] Specifically, the first cover 130 can be fixed to the first surface 111 of the housing 110 by plugging the Lego holes and Lego particles, thereby preventing the first sensor module 210 from being lost.

[0046] Optionally, as another embodiment, the teaching aid also includes: a second cover 150, the second cover 150 includes holes corresponding to some of the first grooves 112 among the multiple first grooves 112, and the surface of the second cover 150 also includes content for explaining the application of the first sensor module 210 composed of some of the first grooves 112.

[0047] Specifically, the second cover 150 can be used to explain the classroom teaching content, which can include multiple contents. For example, the classroom teaching content can be: happy birthday, decibel detector, debugging lunar rover, meteorite avoidance training, ready to go, rocket launch, lunar mission, energy protection, space greenhouse, anti-theft alarm, lunar mission exhibition, new energy stone, smart greenhouse lamp, Steadicam, nostalgic time, etc. Specifically, when the classroom teaching content is happy birthday, the sound sensor needs to be used. At this time, only the sound sensor can be exposed to the outside through the hole on the second cover 150. The second cover 150 can be placed on the first cover 130. When the first cover 130 is a top cover, the second cover 150 can be called a teaching content top cover.

[0048] The hole on the second cover 150 is used to expose the first sensor module 210 related to the classroom teaching content, and the other parts are blocked by the second cover 150. At this time, watching the teaching aids is not only pleasing to the eye, but also can effectively avoid other parts irrelevant to the classroom teaching content distracting students' attention.

[0049] Optionally, as another embodiment, at least one second hole is provided on the first shell 211, and the first groove 112 further includes: a first support platform 173 and a second support platform 175, the first support platform 173 and the second support platform 175 are provided at the bottom of the first groove 112; at least one fixing column 172 is provided on the first support platform 173, and is used to be plugged into at least one second hole in the first shell 211 to fix the first shell 211; the height of the first support platform 173 is higher than the height of the second support platform 175.

[0050] For example, the second hole can be a Lego hole, and the fixing column can be a "cross" fixing column. The size of the "cross" fixing column can be comparable to the size of the Lego particles. In this case, the second hole can also be plugged and fixed with the "cross" fixing column. When the first sensor module 210 needs to be removed from the first groove 112, the position of the first sensor module 210 above the second support platform 175 can be pressed to naturally separate the first sensor module 210 from the fixing column 172, and the first sensor module 210 can be removed.

[0051] The second hole set on the first shell 211 of the first sensor module 210 and the fixing column 172 set in the first groove 112 can firmly fix the first sensor module 210 in the first groove 112, prevent poor contact due to the movement of the first sensor module 210, and more effectively avoid the loss of the first sensor module 210.

[0052] Optionally, as another embodiment, the first groove 112 further includes at least one supporting column 174 , and the at least one supporting column 174 is located on the second supporting platform 175 , and the height of the supporting column 174 is lower than the height of the first supporting platform 173 .

[0053] Specifically, when the first sensor module 210 needs to be taken out from the first groove 112, the position of the first sensor module 210 above the second support platform 175 can be pressed to naturally separate the first sensor module 210 from the fixing column 172, and then the first sensor module 210 can be taken out. At this time, when the position of the first sensor module 210 above the second support platform 175 is pressed, at least one supporting column 174 on the second support platform 175 can support the first sensor module 210, which can effectively prevent the first sensor module 210 from being deformed too much due to the pressing.

[0054] Optionally, as another embodiment, a fourth groove is provided at the bottom of the first shell 211, an isolation column is provided in the center of the fourth groove, and the first surface 111 of the shell 110 also includes Lego particles for plugging and fixing the first sensor module 210 with the fourth groove.

[0055] For example, when the first sensor module 210 needs to stand to sense the change of the sensing parameter, the first sensor module 210 needs to stand and be fixed on the first surface 111. Specifically, when the teaching aid needs to use the grayscale sensor to measure the distance of the object in front, the fourth groove of the first shell of the grayscale sensor can be plugged into the Lego brick on the top surface of the shell 110, so that the grayscale sensor can horizontally measure the distance of the object in front.

[0056] The Lego particles on the first surface 111 of the housing 110 and the fourth groove of the first housing 211 of the first sensor module 210 meet the requirement that some sensors need to be used standing. In addition, the fourth groove of the first housing 211 of the first sensor module 210 can also make the first sensor module 210 as a Lego building block, and cooperate with the Lego particles on the first surface 111 of the housing 110 to exercise divergent thinking.

[0057] Optionally, as another embodiment, multiple first grooves 112 have the same size, multiple first housings 211 of first sensor modules 210 have the same size, multiple first substrates 212 of first sensor modules 210 have the same size, different types of first sensor modules 210 are stored in the multiple first grooves 112, and different types of first sensor modules 210 have different connection interfaces.

[0058] Specifically, the same size of the first substrate 212 and the same size of the first housing 211 make the first sensor module 210 have the same size. According to the interface type, these first sensor modules 210 are divided into digital sensors, analog sensors and I2C sensors. Multiple first sensor modules 210 of the same size are matched with multiple first grooves 112 of the same size, making the appearance of the teaching aid more compact. For a first groove 112, the type of the interface 121 of the connecting line of the first sensor module 210 exposed on the main circuit board 120 is fixed, and the first sensor modules 210 of the same interface type can also be placed in the first groove 112 due to the same appearance size. For example, the interface type is a digital interface, and the first sensor modules 210 that can be replaced include: red LED, yellow LED, green LED, full-color LED, buzzer, gesture sensor, digital tube, touch sensor, etc.

[0059] Optionally, as another embodiment, the first surface 111 of the shell 110 is also provided with a second groove 160, and the second groove 160 is used to store the core processor module. The teaching aid also includes: a core circuit board, which is also located in the shell 110 and connected to the main circuit board 120; at least one magnet is provided at the bottom of the second groove 160, which is used to fix the core processor module by magnetic force, and the second groove 160 also includes a third hole, and the core processor module is electrically connected to the core circuit board through the third hole.

[0060] For example, the interface of the core processor module on the core circuit board can be a U-shaped interface with 27 pogo pins, and the interface corresponding to the core processor module can be a spring pin of the U-shaped interface with 27 pogo pins, and the third hole inside the second groove 160 can expose the U-shaped interface of 27 pogo pins on the core circuit board. The second groove 160 can also be called the core processor groove. Among them, the core processor module can be used to process the sound, light, movement and other electrical signals of the first sensor module 210, and can also send the processed electrical signals to the host connected to the teaching aid for use by the program in the host. In addition, the core processor module can also store the preset program of the teaching aid, and the above-mentioned electrical signals processed by the core processor module can be used for the stored preset program. The main circuit board 120 and the core circuit board can be connected via an FPC (flexible circuit board). At least one magnet arranged at the bottom of the second groove 160 can be visible or fixed below the groove and invisible.

[0061] Optionally, as another embodiment, the teaching aid further includes a motor interface for connecting the motor to the main circuit board 120 , and the motor interface is located on a side of the housing 110 and connected to the main circuit board 120 .

[0062] For example, a motor interface may be provided on the side of the housing 110 of the teaching aid, and the motor may be connected to the motor interface via a connecting line. The teaching aid may realize the function of driving the motor, so that the motor may drive the wheels or the fan to rotate.

[0063] Optionally, as another embodiment, the first surface 111 of the housing 110 is further provided with a plurality of third grooves 113, each of which is used to store a second sensor module (such as Figure 5 511), wherein the size of the second sensor module 511 is larger than that of the first sensor module 210, the second sensor module 511 includes a second shell and a second substrate, the second shell accommodates the second substrate, the second substrate is provided with a sensor and an interface, the second shell is detachably connected to the third groove 113; the side wall of the third groove 113 is provided with an elastic protrusion, the elastic protrusion is used to press the side wall of the second shell when the second shell is placed in the third groove 113.

[0064] For example, some sensor components are large in size and cannot be accommodated in the first housing of the first sensor module 210. This type of sensor module can be classified as the second sensor module 511. The second housing and the second substrate included in the second sensor module 511 can be fixed by rivets, and the number of rivets is at least 1. The second housing is provided with an opening, so that the sensing part of the sensor on the second substrate can be exposed in the opening. The second sensor module 511 can be a steering gear or an ultrasonic sensor, etc., wherein the steering gear is a digital sensor and uses a digital interface, and the ultrasonic sensor is an I2C sensor and uses an I2C interface. The first surface 111 of the housing 110 of the teaching aid can also be provided with a plurality of third grooves 113 for accommodating the second sensor module 511. Correspondingly, the first cover 130 and the second cover 150 can also be provided with openings corresponding to the positions of the third grooves 113. When it is necessary to remove the second sensor module 511, the second sensor module 511 can be pushed in the direction where the elastic protrusion is located to shrink the elastic protrusion. At this time, the second sensor module 511 can be lifted to remove the second sensor module 511. When the first surface 111 of the housing 110 of the teaching aid is provided with a plurality of third grooves 113, and the plurality of third grooves 113 are used to store the servos and ultrasonic sensors, the teaching aid should also include a servo circuit board and an ultrasonic circuit board, and both the servo circuit board and the ultrasonic circuit board are connected to the main circuit board 120, and can be connected through an FPC. At this time, two holes are also provided at the bottom of the third groove 113, one for accommodating the connection wire, and the other for exposing the connection wire interface of the servo circuit board or the ultrasonic circuit board, so as to realize the connection between the servo or ultrasonic sensor and the servo circuit board or the ultrasonic circuit board.

[0065] The arrangement of the second sensor module 511 and the third groove 113 solves the problem of needing to use larger sensor components in the teaching aid.

[0066] Optionally, as another embodiment, the first housing 211 includes a first shell and a second shell, and the first shell and the second shell are cooperatively connected to accommodate the first substrate 212 .

[0067] For example, the first substrate 212 may be a printed circuit board, and a sensor 213 having a certain function, such as a sound sensor, a light sensor, an infrared sensor or a vibration sensor, etc., may be provided on the first substrate 212; an interface may also be provided on the first substrate 212, and the interface is used to connect the first substrate 212 with other circuit modules, such as other circuit modules may be the main circuit board 120. The first substrate 212 may be placed in a first housing 211 assembled from a first shell and a second shell, to form a complete first sensor module 210.

[0068] By setting the sensor on the first substrate 212 and configuring the first shell 211 for the first substrate 212, it is possible to use the first shell 211 with standard size specifications to assemble a sensor circuit board with standard size specifications to form a first sensor module 210 with uniform specifications, thereby achieving a more convenient connection between the first sensor module 210 and other circuit modules or structural modules.

[0069] Optionally, as another embodiment, the first substrate 212 includes a blank area; the first shell includes a first side wall and a second side wall, and the inner walls of the first side wall and the second side wall respectively include a first card slot and a second card slot; the second shell includes a third side wall and a fourth side wall, and the inner walls of the third side wall and the fourth side wall respectively include a third card slot and a fourth card slot, and when the first shell and the second shell are connected, the blank area is accommodated in the first card slot, the second card slot, the third card slot and the fourth card slot to form a first sensor module 210.

[0070] Specifically, the first side wall and the second side wall may further include a first clip and a second clip, respectively, and the first clip and the second clip extend outward along the inner walls of the first side wall and the second side wall; the third side wall and the fourth side wall may further include a first clip groove and a second clip groove, respectively, and the first clip groove and the second clip groove extend outward along the inner walls of the third side wall and the fourth side wall, and the first clip groove and the second clip groove respectively cooperate with the first clip and the second clip to connect the first shell and the second shell.

[0071] Further, the outer walls of the first clamp and the second clamp may be provided with limit keys, respectively, and correspondingly, the inner walls of the first clamp groove and the second clamp groove may be provided with limit key slots, respectively. The first housing may further include a first bottom surface, a first front wall and a first rear wall, wherein the first rear wall may include at least one hole; the second housing may further include a second bottom surface, a second front wall and a second rear wall. The first substrate 212 may include a second surface and a third surface, the second surface is provided with a sensor, and the third surface is provided with an interface, which may be used to connect the first substrate 212 and the main circuit board 120; the first front wall may include a first opening, and the second front wall may include a second opening, and when the first housing and the second housing are connected, the first opening and the second opening form an opening for exposing the sensor 213; the first rear wall may include a third opening, and the second rear wall may include a fourth opening, and when the first housing and the second housing are connected, the third opening and the fourth opening form an opening for exposing the interface. The length of the first housing 211 may be the width of four Lego particles, the width may be the width of two Lego particles, and the height may be the width of one Lego particle. The first bottom surface may include at least one groove, and the second bottom surface may include at least one boss portion. The cross section of at least one boss portion may be circular. The at least one groove may include two grooves. The at least one groove may also include a groove and a spacer column, and the spacer column may be arranged in the center of the groove. The cross section of at least one hole on the first housing 211 may be circular. The first substrate 212 may also include a through hole, which may be used to cooperate with a screw for connection.

[0072] More specifically, the width of the first card slot and the second card slot can be greater than or equal to the thickness of the first substrate 212 accommodated, and the blank area is distributed at the edge positions of both sides of the first substrate 212, so that the blank area of ​​the first substrate 212 can slide into the first shell along the first card slot and the second card slot. Similarly, the width of the third card slot and the fourth card slot can be the same or similar to that of the first card slot and the second card slot. Specifically, after the first substrate 212 slides into the first shell 211 along the card slot, the first substrate 212 and the card slot can be tight or loose. For example, grooves can be opened on the outer surfaces of the first side wall and the second side wall to form the first card connector and the second card connector, and grooves can be opened on the inner surfaces of the third side wall and the fourth side wall to form the first card connector groove and the second card connector groove, so as to improve the fit of the connection between the first shell and the second shell. At this time, the first card slot and the second card slot can extend along the inner wall to the first card connector and the second card connector respectively. In this way, when the first shell and the second shell are connected to form a complete shell, the first card slot can be docked with the third card slot. Similarly, the second card slot can be docked with the fourth card slot, thereby more firmly fixing the first substrate 212.

[0073] In this way, when the first shell and the second shell are connected, the cooperation of the limit key and the limit key slot can realize the tight connection between the first shell and the second shell, so as to obtain a complete and stable first sensor module. For example, the cross-section of the limit key can be an ellipse or a rectangle, etc., the number of the limit keys on the outer wall of each clip can be one or more, and the shape and number of the limit key slots correspond to the limit keys. Similarly, in order to achieve the same effect, that is, to realize the tight connection between the first shell and the second shell, the limit key can also be set on the inner wall of the first clip groove and the second clip groove, so that the limit key slot can be set on the outer wall of the first clip and the second clip, and there is no limitation on this.

[0074] Specifically, the first rear wall may be provided with one or more holes, which may cooperate with the fixing columns in the containing structure of the first sensor module 210 to play a fixing role, so as to achieve a more stable connection.

[0075] Specifically, the shape of the hole can be circular, rectangular or other shapes. For example, the first rear wall is provided with two circular holes, which can be matched with Lego particles to realize a specific structure with a certain function built with Lego building blocks.

[0076] For example, the cross-section of the fixing column connected to the first sensor module 210 can be a cross shape, and the hole on the first shell 211 can be circular. The combination of the cross-shaped fixing column and the circular hole can better realize the connection and disassembly of the first sensor module 210.

[0077] Specifically, when the first substrate 212 is installed in the first shell and the second shell, since different components may be provided on the two surfaces of the first substrate 212 as needed, openings may be provided on the first shell 211 to expose components on the first substrate 212 that need to be exposed.

[0078] For example, the first substrate 212 is a sensor circuit board, and a sensor 213 is disposed on one surface of the circuit board to realize a certain specific function; an interface is disposed on the other surface of the circuit board to realize the connection between the circuit board and other circuit modules. At this time, in order to facilitate the connection with other circuit modules, the interface on the circuit board can be exposed through the opening on the first shell; and in order to facilitate the user to distinguish different sensor circuit boards, the sensor 213 can also be exposed through the opening on the first shell 211. The sensor 213 and the interface can be exposed from one opening or from different openings, and can be exposed from the opening on the same surface of the shell or from the openings on different surfaces of the shell, wherein the degree of exposure of the sensor 213 or the interface from the first shell 211 can be partially exposed outside the first shell 211, or not exposed outside the first shell 211.

[0079] In order to make the first sensor module 210 have uniform specifications, the opening formed by the first opening and the second opening is used to expose the surface of the sensor 213; the opening formed by the third opening and the fourth opening is used to expose the surface of the interface. At this time, in order to prevent the sensor 213 and the interface from being exposed outside the first housing 211, the positions of the first card slot, the second card slot, the third card slot and the fourth card slot can be adjusted according to the height of the sensor 213 and the interface. For example, the position of the first card slot in the inner wall of the first side wall can be biased toward the first front wall.

[0080] Specifically, if the surface where the first bottom surface is located is taken as a horizontal plane, when the first shell and the second shell are connected, the length of the obtained complete shell can be set to the width of two Lego blocks, the width can be set to the width of one Lego block, and the height can be set to the width of four Lego blocks. In this way, the first shell 211 can have a standard size specification and can be spliced ​​with Lego blocks.

[0081] Specifically, the groove provided on the first bottom surface can facilitate the splicing of the first housing 211 with other first housings 211, that is, it can facilitate the connection between various circuit modules. Similarly, the groove can also be spliced ​​with other structural parts, such as Lego modules.

[0082] Specifically, the cross section of the boss portion can be circular, rectangular or other shapes, and the boss portion can be provided as one or more, and can be hollow or solid. For example, in order to facilitate the shell to be spliced ​​with Lego blocks, the number of boss portions can be set to two, and the cross section of the boss portion can be set to be circular.

[0083] Specifically, the groove disposed on the first bottom surface can be connected to the boss portion of the other first sensor module 210, so the shape of the groove can match the shape of the boss portion. For example, the first housing 211 includes two grooves, and the cross-section of the groove is circular.

[0084] At least one groove is configured as a rectangular groove and an isolation column in the middle of the groove, and the isolation column separates the rectangular groove into two parts, so that the two parts of the rectangular groove can be respectively connected with two Lego particles through isolation by the isolation column.

[0085] Specifically, the first substrate 212 can be installed in the first housing 211 to form the first sensor module 210, or can be used alone as a circuit board. When the first substrate 212 is used alone as a circuit board, it can be fixed by through holes and screws. For example, the inner surface of the through hole is provided with threads.

[0086] The embodiments of the present invention are described in more detail below with reference to specific examples.

[0087] Figure 4It is a schematic three-dimensional structural diagram of a teaching tool according to another embodiment of the present invention.

[0088] The sensor teaching aid may include a housing 110, a top cover 130, a teaching content top cover 150, a circuit board and a base 140, wherein the top cover 130 is placed on the top surface of the housing 110, the teaching content top cover 150 is placed on the top cover 130, and the base 140 is located at the bottom of the housing 110, and can be fixed to the housing 110 by screws. The circuit board may include a main circuit board 120, a core circuit board, a steering gear circuit board and an ultrasonic circuit board. The main circuit board 120 and the core circuit board may be connected by an FPC (flexible circuit board) with a spacing of 0.5mm32 pins, the main circuit board 120 and the steering gear circuit board may be connected by an FPC with a spacing of 0.5mm12 pins, the main circuit board 120 and the ultrasonic circuit board may also be connected by an FPC with a spacing of 0.5mm12 pins, and the main circuit board 120 may be fixed to the inside of the housing 110 by screws.

[0089] The top surface 111 of the housing 110 can be provided with 20 sensor module grooves for accommodating sensor modules, and these sensor module grooves can be divided into two categories: first grooves 112 and third grooves 113. The sensor modules are divided into two categories: first sensor modules 210 and second sensor modules 511. Among them, the first grooves 112 have the same size and are 18 in number, which are used to accommodate the first sensor modules 210; the other two are classified as third grooves 113, which are used to accommodate the second sensor modules 511. A first support platform and a second support platform are provided at the bottom of each first groove 112, and the height of the first support platform is higher than that of the second support platform. Two fixing columns are provided on the first support platform, and two support columns are provided on the second support platform. Each first groove 112 also includes two holes at the bottom, one for accommodating the connection line and the other for exposing the connection line interface 121 on the main circuit board 120. The height of the two support columns is also lower than the height of the first support platform. The fixing column is a "cross" fixing column, and its diameter is equivalent to the diameter of the Lego brick, and is used to be plugged into the two second holes on the first housing 211 of the first sensor module 210, so as to fix the first sensor module 210. The side wall of the third groove 113 is provided with an elastic protrusion, and the elastic protrusion is used to press the second sensor module 511 when the second sensor module 511 is placed in the third groove 113. Each third groove 113 also includes two holes at the bottom, one for accommodating the connection line, and the other for exposing the connection line interface on the servo circuit board or the ultrasonic circuit board.

[0090] The first sensor module 210 includes a first housing 211 and a first substrate 212. The first housing 211 is composed of two parts, including a first shell and a second shell. The first shell and the second shell are connected to accommodate the first substrate 212. Two Lego holes are arranged on the surface of the first housing 211 for plugging the "cross" fixing column in the first groove 112. The surface of the first housing 211 is also provided with a fourth groove, and a separation column is arranged in the center of the fourth groove. The top surface 111 of the housing 110 of the teaching aid includes Lego particles, which can be used to plug and fix the first sensor module 210 with the fourth groove. Lego particles are arranged on the surface of the first housing 211, and the first sensor module 210 can be assembled and used as Lego blocks. The second sensor module 511 includes a second housing and a second substrate. The second housing accommodates the second substrate, and the second substrate and the second housing are fixed by rivets, and the number of rivets is 2. Here, Lego particles can also be arranged on the surface of the second housing, and the second sensor module 511 is also assembled and used as Lego blocks. One of the two third grooves 113 accommodates the steering gear, and the other accommodates the ultrasonic sensor.

[0091] A core processor groove 160 is also provided at the central position of the top surface 111 of the shell 110. Four magnets and openings are provided at the bottom of the core processor groove 160. The four magnets are located below the groove and are not visible. The opening exposes the U-shaped 27 pogo pins interface of the core circuit board. Four magnets are encapsulated inside the core processor module, and a spring pin of the U-shaped 27 pogo pins interface is provided on the surface. The core processor module is fixed in the core processor groove 160 by magnetic force. The spring pin of the U-shaped 27 pogo pins interface is connected to the U-shaped 27 pogo pins interface on the core circuit board to communicate with the sensor module.

[0092] The rest of the top surface 111 of the shell 110 can be provided with Lego particles, Lego bricks can be assembled thereon, and the first sensor module 210 can also be placed thereon.

[0093] A motor interface can be set on each of the left and right sides of the housing 110. The interface is a female socket of a 6-pin interface with a pitch of 2.54mm, and the motor can be connected through a connecting line. The motor here also includes a shell, and Lego particles are also set on the surface of the shell. Lego holes are set on the bottom surface of the base 140, and two motors are installed on the base 140, and the connecting lines are connected. Then, a roller that can rotate 360° is installed on the base 140, and tires are installed on the motor. The entire teaching aid can be used as a toy car.

[0094] In addition, a USB opening can also be set on the side of the shell 110 to expose the USB3.1 Type-C female socket on the main circuit board 120; a push button switch is used to control the lever switch, and the lever switch is used to control the power on and off; a power indicator light opening is used to place the power indicator light guide column; a Bluetooth indicator light opening is used to place the Bluetooth indicator light guide column; a TF card slot opening is used to expose the TF card slot on the main circuit board 120, and the TF card can store content for the teaching aid to call; a headphone socket opening is used to place a 3.5mm headphone socket, and plugging in headphones can create a quiet classroom environment.

[0095] A bracket can be set inside the shell 110 to fix the 3.5v lithium battery and the speaker that power the teaching aid, as well as four invisible magnets that support the core circuit board and fix the bottom of the core processor groove 160. These four magnets are used to magnetically adsorb with the four magnets encapsulated inside the core processor module, so that the core processor module is fixed in the core processor groove 160; a light shield is also set inside the shell 110 to gather the light of the power indicator light and the Bluetooth indicator light and to fix the light guide column.

[0096] 20 holes 131 are provided on the top cover 130 at positions corresponding to the first groove 112 and the third groove 113, and the size of each hole 131 is smaller than the size of each corresponding groove. When the sensor module is placed in the first groove 112 and / or the third groove 113, the top cover 130 is covered to encapsulate the sensor module, and the sensor module can also be operated through these holes 131. Lego holes are also provided on the bottom surface of the top cover 130. When the top cover 130 is on the top surface of the shell 110, it can be plugged into the Lego particles on the top surface 111 of the shell 110, thereby fixing the top cover 130.

[0097] There are 18 teaching content covers 150 in total, each of which has a classroom teaching content description. The teaching content may include: Happy Birthday, Decibel Detector, Debugging the Lunar Rover, Avoiding Meteorites Training, Getting Ready, Rocket Launch, Lunar Mission, Defending Energy 1, Defending Energy 2, Space Greenhouse, Anti-theft Alarm, Lunar Mission Exhibition, New Energy Stone, Smart Greenhouse Light, Steadicam, Nostalgic Time, Expansion Class-Turn Back Before You Hit the Wall and Expansion Class-Don't Touch Me! Swinging Robot. Partial holes are set on each teaching content cover at a position corresponding to the first groove 112 or the third groove 113, and the sensor modules in these partial holes are the sensor modules required to be used in the classroom teaching content described.

[0098] The main circuit board 120 may include an external circuit module, an external sensor module, a motor module, a serial port module, a power management module, a sound module, an extended storage module and a control chip. Among them, the external circuit module may include a female socket with a 0.5mm 32-pin interface for connecting to the core circuit board through an FPC with a 0.5mm 32-pin spacing, 2 female sockets with a 0.5mm 12-pin interface for connecting to the servo circuit board through an FPC with a 0.5mm 12-pin spacing, and 1 FPC with a 0.5mm 12-pin spacing for connecting to the ultrasonic circuit board. The external sensor module may be provided with 18 female sockets with a 1.27mm 4-pin interface for connecting the first sensor module 210. The motor module may be provided with 2 female sockets with a 2.54mm 6-pin interface for connecting and driving the motor. The serial port module can be provided with a female socket of a USB3.1 Type-C interface and a Bluetooth serial port, wherein the USB3.1 Type-C female socket can be connected to a host and can also be used to charge the teaching aid, and the Bluetooth serial port can transmit data between Bluetooth devices. The power management module can be provided with a power interface and a lever switch, where the power interface is connected to a 3.5V lithium battery to power the teaching aid, and the lever switch is the power switch of the teaching aid. The lever switch is controlled by a push button switch on the side of the housing 110, and pushing the push button switch controls the power switch of the teaching aid. The sound module can be provided with an AUDIO interface for connecting and driving a speaker, and a 3.5mm headphone socket for plugging in headphones. The extended storage module can be provided with a TF card slot for plugging in a TF card, and the TF card can store content for the teaching aid to call. The control chip can detect the insertion status of the USB3.1 Type-C interface, the low power status of the 3.5V lithium battery, the power on and off of the lever switch, and the charging saturation status. In addition, the control chip can also control the power indicator and Bluetooth indicator. The Bluetooth indicator can indicate the connection status of the Bluetooth serial port, and the power indicator can indicate the on and off of the lever switch, the low power status of the 3.5V lithium battery, and the charging status. The control chip can also control the connection or disconnection of the USB3.1 Type-C serial port and the Bluetooth serial port through the switch chip.

[0099] The servo circuit board and ultrasonic circuit board can each be provided with a 4-pin female interface with a pitch of 1.27mm, which are used to connect the servo sensor and ultrasonic sensor respectively.

[0100] A U-shaped interface with 27 pogo pins can be provided on the core circuit board, which is used to connect the spring pins of the U-shaped interface with 27 pogo pins of the core processor module.

[0101] Below, taking the classroom teaching content of "Don't turn back until you hit the wall" as an example, the use of this teaching aid is introduced.

[0102] The motor interface of the teaching aid is connected to two motors through a connecting line, and the two motors are fixed to the Lego holes of the base 140 of the teaching aid through the Lego particles of the shell, and then a roller that can rotate 360° is installed on the base 140, and the shell surface of the 360° rotating roller is also provided with Lego particles to ensure that the 360° rotating roller can be fixed on the base 140. At this time, the teaching aid forms a movable toy car. Two grayscale sensors are fixed on the top surface of the shell 110 through Lego particles to sense the distance of obstacles.

[0103] The core processor module of the teaching aid stores a program for controlling the movement of the toy car. When the power switch is turned on to start the toy car's movement, when the toy car encounters an obstacle in front of it, the grayscale sensor on the toy car will determine the distance of the obstacle. When the obstacle distance is less than the set distance in the program, the toy car moves in the opposite direction.

[0104] The above describes a teaching aid, and the following describes a teaching system that uses the teaching aid described above.

[0105] Figure 5 It is a schematic composition diagram of a teaching system according to an embodiment of the present invention.

[0106] According to an embodiment of the present invention, the teaching system 500 includes: a teaching tool 510 and a host 520 ; the host 520 is connected to the teaching tool 510 and is used to program the core processor module of the teaching tool 510 .

[0107] Specifically, the teaching aid 510 can be any of the teaching aids described in the above embodiments, and the program edited by the host 520 can be stored in the core processor module, so as to realize the control of the teaching aid by the program in the teaching aid. The number of teaching aids 510 and host 520 in the teaching system 500 is not limited to one, but can be multiple.

[0108] The structure and function of the teaching aid 510 can be found in the previous introduction and will not be described in detail here.

[0109] Optionally, as another embodiment, the host 520 is further configured to receive parameters detected by at least one sensor module of the teaching aid 510 , process the parameters, and display the processing results.

[0110] Specifically, the teaching aid 510 can communicate with the host 520 via a USB data cable using a USB interface, or can communicate using Bluetooth, etc. The host can store a program used by the teaching aid, and the program can use parameters detected by at least one sensor module of the teaching aid.

[0111] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A teaching aid, characterized in that: include: A housing, a main circuit board and a plurality of first sensor modules, wherein the main circuit board is arranged inside the housing; The first surface of the shell is provided with a plurality of first grooves, which are respectively used to store the plurality of first sensor modules, and the plurality of first sensor modules have the same size, wherein the first sensor module comprises a first shell and a first substrate, the first shell is detachably mechanically connected to the first substrate, a sensor and an interface are provided on the first substrate, the first substrate is arranged in the first shell, the first shell is detachably connected to the first groove, and the first substrate is electrically connected to the main circuit board.

2. The teaching aid according to claim 1, characterized in that: A first hole is provided at the bottom of the first groove, and the teaching tool further comprises: A plurality of connecting wires, one end of each connecting wire is connected to the interface of the corresponding first sensor module, the other end of the connecting wire is connected to the interface on the main circuit board, and the first hole is used to accommodate the connecting wire.

3. The teaching tool according to claim 1, characterized in that: Also includes: A first cover is provided with holes corresponding to the plurality of first grooves, and the size of the holes is smaller than the size of the first grooves, so that the first sensor module is encapsulated when the first cover is placed on the first surface of the housing.

4. The teaching tool according to claim 3, characterized in that: The first surface is also provided with Lego particles, and the bottom surface of the first cover is also provided with Lego holes, so that the first cover and the shell can be plugged and fixed through the Lego holes and the Lego particles.

5. The teaching tool according to claim 1, characterized in that: Also includes: The second cover includes holes corresponding to some of the first grooves among the plurality of first grooves, and a surface of the second cover also includes content for explaining application of the first sensor module components in the some of the first grooves.

6. The teaching tool according to claim 1, characterized in that: The first housing is provided with at least one second hole, and the first groove further comprises: a first supporting platform and a second supporting platform, wherein the first supporting platform and the second supporting platform are provided at the bottom of the first groove; at least one fixing column, disposed on the first supporting platform and used for being inserted into at least one second hole in the first housing to fix the first housing; The height of the first supporting platform is higher than that of the second supporting platform.

7. The teaching tool according to claim 6, characterized in that: The first groove further includes at least one supporting column, and the at least one supporting column is located on the second supporting platform. The height of the supporting column is lower than the height of the first supporting platform.

8. The teaching tool according to claim 6, characterized in that: A fourth groove is disposed at the bottom of the first shell, an isolation column is disposed in the center of the fourth groove, and the first surface of the shell also includes Lego particles for plugging and fixing the first sensor module with the fourth groove.

9. The teaching tool according to any one of claims 1 to 8, characterized in that: The multiple first grooves have the same size, the first shells of the multiple first sensor modules have the same size, the first substrates of the multiple first sensor modules have the same size, different types of first sensor modules are stored in the multiple first grooves, and different types of first sensor modules have different connection interfaces.

10. The teaching tool according to any one of claims 1 to 8, characterized in that: The first surface of the housing is also provided with a second groove, and the second groove is used to store the core processor module. The teaching tool also includes: a core circuit board, which is also located in the housing and connected to the main circuit board; At least one magnet is disposed at the bottom of the second groove for fixing the core processor module by magnetic force. The second groove also includes a third hole inside, and the core processor module is electrically connected to the core circuit board through the third hole.

11. The teaching tool according to any one of claims 1 to 8, characterized in that: It also includes a motor interface for connecting the motor to the main circuit board. The motor interface is located on the side of the shell and is connected to the main circuit board.

12. The teaching tool according to claim 1, characterized in that: The first surface of the housing is further provided with a plurality of third grooves, each of which is used to store a second sensor module, wherein the size of the second sensor module is larger than that of the first sensor module, the second sensor module comprises a second housing and a second substrate, the second housing accommodates the second substrate, the second substrate is provided with a sensor and an interface, and the second housing is detachably connected to the third grooves; The side wall of the third groove is provided with an elastic protrusion, and the elastic protrusion is used to press the side wall of the second shell when the second shell is placed in the third groove.

13. The teaching tool according to any one of claims 1 to 8, characterized in that: The first housing includes a first shell and a second shell, and the first shell and the second shell are matched and connected to accommodate the first substrate.

14. The teaching tool according to claim 13, characterized in that: The first substrate includes a blank area; the first shell includes a first side wall and a second side wall, and the inner walls of the first side wall and the second side wall include a first card slot and a second card slot respectively; the second shell includes a third side wall and a fourth side wall, and the inner walls of the third side wall and the fourth side wall include a third card slot and a fourth card slot respectively. When the first shell and the second shell are connected, the blank area is accommodated in the first card slot, the second card slot, the third card slot and the fourth card slot to form the first sensor module.

15. A teaching system, characterized in that: include: A teaching aid as claimed in any one of claims 1 to 14; A host is connected to the teaching aid and is used to program the core processor module of the teaching aid.

16. The teaching system according to claim 15, characterized in that: The host is also used to receive parameters detected by at least one sensor module of the teaching tool, process the parameters, and display the processing results.

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