Article falling detection device and doll machine

Abstract

The embodiment of the utility model discloses an article falling detection device and a doll machine. The falling detection device comprises a main control module, an infrared transmitting module, an infrared receiving module, a signal comparison module and an output module, wherein the output end of the main control module is electrically connected with the input end of the infrared emission module and the input end of the output module, and the output end of the signal comparison module is electrically connected with the input end of the main control module; the input end of the signal comparison module is electrically connected with the output end of the infrared transmitting module and the output end of the infrared receiving module; the main control module is used for receiving an external pulse signal and outputting the external pulse signal to the infrared emission module to adjust the infrared induction distance. By the adoption of the falling detection device, the infrared induction distance can be adjusted through the external pulse signal emitted from the outside, the light eye induction distance can be adjusted without disassembling a machine and manually adjusting the machine, the convenience of light eye adjustment is improved, and the object falling detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of item selection vending machines, and in particular to an item drop detection device and a claw machine. Background Art

[0002] When implementing item drop detection in the item selection vending machine, it is generally used in conjunction with a "photo eye". The photo eye is an item drop detection device that can effectively sense and detect whether the item selection vending machine has shipped or items have dropped, making it easier to perform management operations of the item selection vending machine such as shipment counting.

[0003] Take the claw machine as an example. The photoeye can detect whether a doll has fallen. However, the traditional claw machine photoeyes on the market require manual adjustment of the potentiometer on the photoeye to control the sensing distance. The adjustment of the potentiometer requires disassembling the machine to expose the photoeye inside the machine, and then manually adjusting the potentiometer on the photoeye. This makes it inconvenient to adjust the sensing distance of the photoeye and reduces the efficiency of drop detection. Utility Model Content

[0004] The main purpose of the utility model is to provide an object drop detection device and a claw machine, which can solve the problem that the adjustment of the sensing distance of the photoeye in the prior art is inconvenient and also leads to a reduced efficiency of drop detection.

[0005] To achieve the above-mentioned object, the first aspect of the present invention provides an article drop detection device, the drop detection device comprising:

[0006] Main control module, infrared transmitting module, infrared receiving module, signal comparison module and output module;

[0007] The output end of the main control module is electrically connected to the input end of the infrared transmitting module and the input end of the output module respectively, the output end of the signal comparison module is electrically connected to the input end of the main control module; the input end of the signal comparison module is electrically connected to the output end of the infrared transmitting module and the output end of the infrared receiving module;

[0008] The main control module is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module;

[0009] The infrared transmitting module is used to receive the external pulse signal, output a reference signal corresponding to the external pulse signal to the signal comparison module, and output a transmitting signal of the sensing intensity corresponding to the external pulse signal to adjust the infrared sensing distance;

[0010] The infrared receiving module is used to receive infrared sensing signals and output the infrared sensing signals to the signal comparison module;

[0011] The signal comparison module is used to receive the infrared sensing signal and the reference signal, and when the infrared sensing signal is greater than the reference signal, output an item drop signal to the main control module;

[0012] The main control module is also used to receive the item drop signal and output the item drop signal to the output module;

[0013] The output module is used to receive the item drop signal and output the item drop signal after optical coupling isolation.

[0014] To achieve the above-mentioned object, the second aspect of the present invention provides a claw machine, which at least includes the object drop detection device as described in the first aspect.

[0015] The following beneficial effects are achieved by using the embodiments of the present invention:

[0016] The utility model provides an article drop detection device, which comprises: a main control module, an infrared transmitting module, an infrared receiving module, a signal comparison module and an output module; wherein the output end of the main control module is electrically connected to the input end of the infrared transmitting module and the input end of the output module respectively, and the output end of the signal comparison module is electrically connected to the input end of the main control module; the input end of the signal comparison module is electrically connected to the output end of the infrared transmitting module and the output end of the infrared receiving module; the main control module is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module; the infrared transmitting module is used to receive the external pulse signal, and output a reference signal corresponding to the external pulse signal to the signal comparison module, and output a transmission signal of the induction intensity corresponding to the external pulse signal to adjust the infrared sensing distance; the infrared receiving module is used to receive the infrared sensing signal and output the infrared sensing signal to the signal comparison module; the signal comparison module is used to receive the infrared sensing signal and the reference signal, and when the infrared sensing signal is greater than the reference signal, output the article drop signal to the main control module; the main control module is also used to receive the article drop signal and output the article drop signal to the output module; the output module is used to receive the article drop signal and output the article drop signal after optical coupling isolation.

[0017] By adopting the above-mentioned drop detection device, the infrared sensing distance can be adjusted by an external pulse signal sent from the outside. The photoelectric eye sensing distance can be adjusted without disassembling the machine for manual adjustment. This not only improves the convenience of "photoelectric eye" adjustment, but also improves the efficiency of object drop detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] in:

[0020] Figure 1 It is a structural block diagram of an article drop detection device in an embodiment of the utility model;

[0021] Figure 2 Another structural block diagram of an article drop detection device in an embodiment of the utility model;

[0022] FIG. 3( a ) is a circuit diagram of an article drop detection device in an embodiment of the present invention. Figure 1 ;

[0023] FIG. 3( b ) is a circuit diagram of an article drop detection device in an embodiment of the present invention. Figure 2 ;

[0024] FIG3( c ) is a third circuit schematic diagram of an article drop detection device in an embodiment of the present utility model;

[0025] FIG. 3( d ) is a circuit diagram of an article drop detection device in an embodiment of the present invention. Figure 4 ;

[0026] FIG3( e ) is a circuit schematic diagram 5 of an article drop detection device in an embodiment of the present utility model;

[0027] FIG3( f ) is a sixth circuit diagram of a device for detecting a drop of an article in an embodiment of the present utility model;

[0028] FIG3( g ) is a circuit schematic diagram 7 of an article drop detection device in an embodiment of the present utility model;

[0029] FIG3(h) is a circuit schematic diagram 8 of an article drop detection device in an embodiment of the present utility model;

[0030] FIG3(i) is a circuit schematic diagram 9 of an article drop detection device in an embodiment of the present utility model;

[0031] FIG3(j) is a circuit schematic diagram 10 of an article drop detection device in an embodiment of the present utility model;

[0032] FIG3( k ) is a circuit schematic diagram 11 of an article drop detection device in an embodiment of the present utility model;

[0033] Figure 4 The structure diagram of a claw machine in the embodiment of the utility model is shown in FIG. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1 , Figure 1 FIG. 1 is a structural block diagram of an article drop detection device in an embodiment of the present utility model, such as Figure 1 The device 00 for detecting the falling of an object shown in the figure at least comprises: a main control module 10 , an infrared transmitting module 20 , an infrared receiving module 30 , a signal comparing module 40 and an output module 50 .

[0036] The output end of the main control module 10 is electrically connected to the input end of the infrared emitting module 20 and the input end of the output module 50 respectively, and the output end of the signal comparison module 40 is electrically connected to the input end of the main control module 10; the input end of the signal comparison module 40 is electrically connected to the output end of the infrared emitting module 20 and the output end of the infrared receiving module 30;

[0037] Furthermore, the main control module 10 is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module 20, wherein the external pulse signal can be emitted by an external device that has a communication connection with the above-mentioned drop detection device or the main control chip. Exemplarily, the external device can be a terminal with a display screen, and the user can select the required infrared sensing range based on the display screen of the terminal, such as pulling a progress bar or entering a specific value and other interactive operations. In this way, a pulse signal of the infrared sensing distance corresponding to the interactive operation can be sent to the main control module based on the actual interactive operation, that is, the external pulse signal. The terminal can be a main control board setting terminal for the main control module, and then the user can perform corresponding interactive operations in the main control board setting interface of the main control board setting terminal to adjust the infrared sensing distance without disassembling the machine, thereby improving convenience.

[0038] Further, the infrared transmitting module 20 is used to receive an external pulse signal, and output a reference signal corresponding to the external pulse signal to the signal comparing module 40, and output a transmission signal of the sensing intensity corresponding to the external pulse signal, so as to adjust the infrared sensing distance, which is the longest infrared sensing distance that the drop detection device can sense, wherein the reference signal is used to reflect the longest sensing distance, and the reference signal can be a reference voltage; furthermore, the infrared receiving module 30 is used to receive the infrared sensing signal, and output the infrared sensing signal to the signal comparing module 40, wherein if the object is within the longest infrared sensing distance, then the infrared sensing signal can indicate the distance between the object and the drop detection device; The signal comparison module 40 is used to receive the infrared sensing signal and the reference signal, and when the infrared sensing signal is greater than the reference signal, output an item drop signal to the main control module 10, wherein, if there is an item within the longest sensing distance, the infrared sensing signal is different from the reference signal corresponding to the longest sensing distance. Specifically, when the infrared sensing signal is greater than the reference signal, it is considered that there is an item within the longest sensing distance, indicating that the item has dropped. At this time, the signal comparison module will output the item drop signal to the main control module. The item drop signal can be a high or low level signal. For example, when the infrared sensing signal is greater than the reference signal, the signal comparison module outputs a low level signal, and the low level signal is an item drop signal;

[0039] It is understandable that the main control module 10 is also used to receive the item drop signal, and output the item drop signal to the output module 50. The main control module will receive the item drop signal to facilitate the statistics of the drop information and manage the items in the item selection vending machine, even for replenishment or reminders; the output module 50 is used to receive the item drop signal and output the item drop signal after optical coupling isolation, that is, the main control module can also output the item drop signal to the output module, and the output module performs optical coupling isolation on the item drop signal and outputs the item drop prompt information. Exemplarily, the main control module includes but is not limited to control devices such as single-chip microcomputers, FPGAs, and MCUs. The infrared transmitting module and the infrared receiving module constitute an infrared sensing unit for infrared sensing, which can be an infrared sensing device such as an infrared sensor.

[0040] The utility model provides an article drop detection device, which comprises: a main control module, an infrared transmitting module, an infrared receiving module, a signal comparison module and an output module; wherein the output end of the main control module is electrically connected to the input end of the infrared transmitting module and the input end of the output module respectively, and the output end of the signal comparison module is electrically connected to the input end of the main control module; the input end of the signal comparison module is electrically connected to the output end of the infrared transmitting module and the output end of the infrared receiving module; the main control module is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module; the infrared transmitting module is used to receive the external pulse signal, and output a reference signal corresponding to the external pulse signal to the signal comparison module, and output a transmission signal of the induction intensity corresponding to the external pulse signal to adjust the infrared sensing distance; the infrared receiving module is used to receive the infrared sensing signal and output the infrared sensing signal to the signal comparison module; the signal comparison module is used to receive the infrared sensing signal and the reference signal, and when the infrared sensing signal is greater than the reference signal, output the article drop signal to the main control module; the main control module is also used to receive the article drop signal and output the article drop signal to the output module; the output module is used to receive the article drop signal and output the article drop signal after optical coupling isolation. By adopting the above-mentioned drop detection device, the infrared sensing distance can be adjusted by an external pulse signal sent from the outside. The photoelectric eye sensing distance can be adjusted without disassembling the machine for manual adjustment. This not only improves the convenience of "photoelectric eye" adjustment, but also improves the efficiency of object drop detection.

[0041] See also Figure 2 , Figure 2 FIG. 1 is another structural block diagram of an article drop detection device in an embodiment of the present utility model, as shown in FIG. Figure 2 The device for detecting the falling of an object 00 comprises: a main control module 10 , an infrared transmitting module 20 , an infrared receiving module 30 , a signal comparing module 40 , an output module 50 , an indicator light module 60 and a power supply module 70 .

[0042] Among them, the output end of the main control module 10 is electrically connected to the input end of the infrared transmitting module 20 and the input end of the output module 50 respectively, and the output end of the signal comparison module 40 is electrically connected to the input end of the main control module 10; the input end of the signal comparison module 40 is electrically connected to the output end of the infrared transmitting module 20 and the output end of the infrared receiving module 30; the output end of the main control module 10 is also electrically connected to the input end of the indicator module 60; the power supply voltage end of the power supply module 70 is electrically connected to the power supply end of the main control module 10, the infrared transmitting module 20, the infrared receiving module 30, the signal comparison module 40, the output module 50 and the indicator module 60 respectively;

[0043] Furthermore, the main control module 10 is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module 20; the infrared transmitting module 20 is used to receive an external pulse signal, and output a reference signal corresponding to the external pulse signal to the signal comparison module 40, and output a transmission signal of the sensing intensity corresponding to the external pulse signal to adjust the infrared sensing distance; the infrared receiving module 30 is used to receive an infrared sensing signal and output an infrared sensing signal to the signal comparison module 40; the signal comparison module 40 is used to receive an infrared sensing signal and a reference signal, and when the infrared sensing signal is greater than the reference signal, outputs an item drop signal to the main control module 10; the main control module 10 is also used to receive an item drop signal and output an item drop signal to the output module 50; the output module 50 is used to receive an item drop signal and output an item drop signal after optical coupling isolation.

[0044] It should be noted that Figure 2 The contents of the main control module 10, infrared transmitting module 20, infrared receiving module 30, signal comparing module 40 and output module 50 are similar to those of FIG. Figure 1 The contents of the main control module 10, infrared transmitting module 20, infrared receiving module 30, signal comparing module 40 and output module 50 are similar, and are not described here to avoid repetition. For details, please refer to Figure 1 The contents of the main control module 10, the infrared transmitting module 20, the infrared receiving module 30, the signal comparing module 40 and the output module 50 are shown.

[0045] In a feasible implementation, the main control module 10 is also used to output an indicator light control signal to the indicator light module when receiving an item falling signal. The indicator light module is used to receive the indicator light control signal to implement an item falling prompt. The prompt can be combined with other prompt methods. In addition to light prompts, sound prompts can also be given. Moreover, in addition to the sound and light prompts of item falling, other prompts can also be triggered, which are not limited here.

[0046] The power supply module 70 is used to output a first power supply signal to the infrared transmitting module 20, the infrared receiving module 30 and the signal comparison module, and to output a second power supply signal to the main control module 10, the output module and the indicator light module, wherein the first power supply signal and the second power supply signal can be different output voltages, for example, the first power supply signal can be an output voltage of 9V, and the second power supply signal can be an output voltage of 5V, which is only used as an example and not limited here.

[0047] The utility model provides an article drop detection device, which includes: a main control module, an infrared transmitting module, an infrared receiving module, a signal comparison module, an output module, an indicator light module and a power supply module. By adopting the above-mentioned drop detection device, the infrared sensing distance can be adjusted by an external pulse signal sent from the outside, and the photoelectric eye sensing distance can be adjusted without disassembling the machine for manual adjustment, which not only improves the convenience of "photoelectric eye" adjustment, but also improves the efficiency of article drop detection. In addition, the output signal of the main control module, such as the article drop signal, can be optically isolated, and sound and light prompts can be made for the article drop, thereby improving the user experience.

[0048] It is understandable that each of the above modules can be implemented by a circuit, that is, it can be an eMule module. The following is an example of the present application from a circuit perspective.

[0049] Please refer to Figure 3(a), Figure 3(b), Figure 3(c), Figure 3(d), Figure 3(e), Figure 3(f), Figure 3(g), Figure 3(h), Figure 3(i), Figure 3(j) and Figure 3(k), Figure 3(a) to Figure 3(k) All of them are circuit principle diagrams of an article drop detection device in an embodiment of the utility model.

[0050] FIG. 3( a ) is a circuit diagram of a device for detecting a drop of an object in an embodiment of the present invention. Figure 1 ; FIG3(b) is a circuit diagram of an article drop detection device in an embodiment of the present utility model Figure 2 ; Figure 3(c) is a circuit schematic diagram 3 of an article drop detection device in an embodiment of the utility model.

[0051] Specifically, Figures 3(a), 3(b) and 3(c) can be regarded as circuit schematics of the above-mentioned power supply module 70. The power supply module shown in Figures 3(a), 3(b) and 3(c) at least includes a first voltage stabilizing chip U1, a second voltage stabilizing chip U2, a first diode D27, a first capacitor C1, a second capacitor C4, a third capacitor C5, a fourth capacitor C2, a fifth capacitor C6, a sixth capacitor C7 and a seventh capacitor C3; wherein the power supply voltage terminal of the power supply module includes a first power supply voltage terminal VCC12V, a second power supply voltage terminal VCC9V and a third power supply voltage terminal VCC5V.

[0052] Among them, the cathode of the first diode D27 is electrically connected to the first output pin 4 of the interface P1; the anode of the first diode D27 is electrically connected to the first power supply voltage terminal VCC12V, one end of the first capacitor C1, one end of the second capacitor C4 and the input pin INPUT of the first voltage stabilizing chip U1 respectively; the output pin OUTPUT of the first voltage stabilizing chip U1 is electrically connected to the second power supply voltage terminal VCC9V, one end of the third capacitor C5, one end of the fourth capacitor C2, one end of the fifth capacitor C6 and the input pin INPUT of the second voltage stabilizing chip U2 respectively; the output pin OUTPUT of the second voltage stabilizing chip U2 is electrically connected to the third power supply voltage terminal VCC5V, one end of the sixth capacitor C7 and one end of the seventh capacitor C3 respectively;

[0053] The other end of the first capacitor C1, the other end of the second capacitor C4, the other end of the third capacitor C5, the other end of the fourth capacitor C2, the other end of the fifth capacitor C6, the other end of the sixth capacitor C7 and the other end of the seventh capacitor C3 as well as the ground pin GND of the first voltage stabilizing chip U1 and the ground pin GND of the second voltage stabilizing chip U2 are all grounded.

[0054] Furthermore, FIG. 3( d ) is a circuit diagram of an article drop detection device according to an embodiment of the present invention. Figure 4 3(d) can be regarded as the circuit schematic diagram of the main control module 10. The main control module shown in FIG3(d) is a MUC circuit. The main control module shown in FIG3(d) at least includes: a main control chip U7, an eighth capacitor C8 and a first resistor R3. The output end of the main control module at least includes the first output pin PA0, the second output pin PA1 and one end of the first resistor R3 of the main control chip U7. The input end of the main control module at least includes the input pin PA2 of the main control chip U7. The power supply end of the main control module includes the power supply pin VDD of the main control chip U7.

[0055] Among them, the third power supply voltage terminal VCC5V is electrically connected to the power supply pin VDD of the main control chip U7 and one end of the eighth capacitor C8, respectively, and the other end of the eighth capacitor C8 is grounded; one end of the first resistor R3 is electrically connected to the input end of the infrared emission module (one end of the resistor R35), and one end of the first resistor R3 is also electrically connected to the second output pin 1 of the interface P1; the first output pin PA0 of the main control chip U7 is electrically connected to the input end of the indicator light module; the second output pin PA1 of the main control chip is electrically connected to the input end of the output module, and the input pin PA2 of the main control chip is electrically connected to the output end of the signal comparison module.

[0056] Furthermore, FIG. 3( e ) is a circuit schematic diagram 5 of a device for detecting a drop of an article in an embodiment of the present utility model; FIG. 3( f ) is a circuit schematic diagram 6 of a device for detecting a drop of an article in an embodiment of the present utility model.

[0057] Specifically, FIG. 3(e) and FIG. 3(f) show a circuit schematic diagram of the infrared transmitting module 20. The infrared transmitting module shown in FIG. 3(e) and FIG. 3(f) includes at least an infrared transmitting tube, a ninth capacitor C10, a second resistor R5, a third resistor R6, a fourth resistor R35, a fifth resistor R32 and a transistor Q1, wherein the input end of the infrared transmitting module includes at least one end of the fourth resistor R35, and the output end of the infrared transmitting module includes one end of the third resistor R6; one end of the first resistor R3 is electrically connected to one end of the fourth resistor R35; one end of the third resistor R6 is electrically connected to the input end of the signal comparison module;

[0058] The other end of the fourth resistor R35 is electrically connected to one end of the fifth resistor R32 and the base of the transistor Q1 respectively; there can be one or more infrared emitting tubes. If there is one infrared emitting tube, the collector of the transistor Q1 is electrically connected to the positive electrode of the infrared emitting tube respectively; the negative electrode of the infrared emitting tube is electrically connected to the second power supply voltage terminal 9V respectively. When there are multiple infrared emitting tubes, such as 6 infrared emitting tubes D1, D10, D4, D7, D2 and D5 are shown in Figure 3 (e), two resistors R1 and R2 can be added, and the resistors R1 and R2 are set in series between the negative electrode of the infrared emitting tube and the second power supply voltage terminal. It should be noted that the schematic diagram shown in Figure 3 (e) constitutes an infrared emitting circuit, and the emission signal strength is adjusted by PWM.

[0059] One end of the fourth resistor R35 is also electrically connected to one end of the third resistor R6; one end of the third resistor R6 is also electrically connected to one end of the ninth capacitor C10 and one end of the second resistor R5; the other end of the second resistor R5 is electrically connected to the second power supply voltage terminal 9V, and the other end of the ninth capacitor C10, the other end of the third resistor R6, the other end of the fifth resistor R32, and the emitter of the transistor Q1 are all grounded. It should be noted that the longest sensing distance is adjusted by adjusting the resistor R6, and the voltage across R6 is the reference voltage.

[0060] Further, FIG3(h) is a circuit schematic diagram eight of a device for detecting a drop of an article in an embodiment of the utility model; FIG3(i) is a circuit schematic diagram nine of a device for detecting a drop of an article in an embodiment of the utility model; specifically, FIG3(h) and FIG3(i) show circuit schematic diagrams of six infrared receiving modules, each of which includes: an infrared receiving tube, a tenth capacitor, an eleventh capacitor, a sixth resistor, and a seventh resistor; the output end of each infrared receiving module includes at least one end of the tenth capacitor; the power supply end of each infrared receiving module includes at least the positive electrode of the infrared receiving tube, and then one end of each tenth capacitor is electrically connected to the input end of the signal comparison module. It can be understood that the number of infrared receiving modules and infrared transmitting tubes must be the same. Continuing with FIG3(e) as an example, if there are 6 infrared transmitting tubes, there are also 6 infrared receiving modules.

[0061] Taking the infrared receiving module including the infrared receiving tube D15 as an example, the infrared receiving tube D15, the tenth capacitor C15, the eleventh capacitor C18, the sixth resistor R11, and the seventh resistor R12 are included; the output end of the infrared receiving module at least includes one end of the tenth capacitor C15; the power supply end of the infrared receiving module at least includes the positive electrode of the infrared receiving tube D15, and then one end of the tenth capacitor C15 is electrically connected to the input end of the signal comparison module, and one end of the tenth capacitor C15 is also electrically connected to one end of the sixth resistor R11; the other end of the tenth capacitor C15 is respectively electrically connected to one end of the eleventh capacitor C18, one end of the seventh resistor R12 and the negative electrode of the infrared receiving tube D15; the positive electrode of the infrared receiving tube D15 is electrically connected to the second power supply voltage end 9V; the other end of the sixth resistor R11, the other end of the seventh resistor R12 and the other end of the eleventh capacitor C18 are all grounded.

[0062] Among them, the infrared receiving tubes D15, D18, D22, D14, D17 and D21 shown in Figure 3 (h) and Figure 3 (i) work in the amplification area, blocking direct current, which can prevent 9V from being directly connected to the comparator input terminal when the infrared receiving tube is damaged.

[0063] Furthermore, FIG3(f) is a circuit schematic diagram of a drop detection device for an article in an embodiment of the present invention; FIG3(g) is a circuit schematic diagram of a drop detection device for an article in an embodiment of the present invention; wherein, FIG3(f) and FIG3(g) show circuit schematic diagrams of a signal comparison module, and the signal comparison module shown in FIG3(f) and FIG3(g) includes: a comparator, a twelfth capacitor C9, an eighth resistor R4, and a thirteenth capacitor C35; wherein, the number of comparators varies with the number of infrared receivers and infrared transmitters. When the infrared receiver and the infrared transmitter are a pair, the comparator can be one, and when there are multiple pairs of infrared receivers and infrared transmitters, the comparators can be more than two, wherein each infrared receiving module corresponds to an infrared receiving channel, and the signal comparison module acts as a voltage comparison circuit, and when the voltage of any one infrared receiving channel is greater than the reference voltage, a low level DI is output.

[0064] Taking the infrared receiver D1 and the infrared transmitter D15 as a pair and the comparator as an example, the input end of the signal comparison module at least includes the first input pin IN+1 and the second input pin IN-1 of the comparator U3, the output end of the signal comparison module at least includes the output pin OUT1 of the comparator U3, and the power supply end of the signal comparison module at least includes the power supply pin VCC+ of the comparator U3;

[0065] The output pin OUT1 of the comparator U3 is electrically connected to the input pin PA2 of the main control chip U7; the first input pin IN+1 of the comparator U3 is electrically connected to one end of the third resistor R6, and the second input pin IN-1 of the comparator is electrically connected to one end of the tenth capacitor C15; the second power supply voltage terminal VCC9V is electrically connected to the power supply pin VCC+ of the comparator U3 and one end of the thirteenth capacitor C35, respectively, and the output pin OUT1 of the comparator U3 is also electrically connected to one end of the twelfth capacitor C9 and one end of the eighth resistor R4, respectively;

[0066] The other end of the eighth resistor R4 is electrically connected to the third power supply voltage terminal; the other end of the twelfth capacitor C9 and the other end of the thirteenth capacitor C35 are both grounded.

[0067] When there are multiple pairs of infrared receivers and infrared transmitters, there may be more than two comparators. For example, FIG. 3( f ) and FIG. 3( g ) show three pairs of infrared receivers and infrared transmitters. In this case, there are two comparators, namely comparators U3 and U4 .

[0068] Further, FIG3(j) is a circuit schematic diagram 10 of an article drop detection device in an embodiment of the present utility model; FIG3(j) shows a circuit schematic diagram of an output module, and the output module shown in FIG3(j) includes: a photoelectric coupler U6, a ninth resistor R20, and a tenth resistor R13; the input end of the output module includes at least one end of the ninth resistor R20, and the power supply end of the output module includes the positive electrode A of the light-emitting diode of the photoelectric coupler;

[0069] One end of the ninth resistor R20 is electrically connected to the second output pin PA1 of the main control chip, the other end of the ninth resistor R20 is electrically connected to the positive electrode A of the light-emitting diode of the photocoupler, and the negative electrode C of the light-emitting diode of the photocoupler is electrically connected to the third power supply voltage terminal; the emitter EM of the phototransistor of the photocoupler is grounded; the collector COL of the phototransistor of the photocoupler is electrically connected to one end of the tenth resistor R13, and the other end of the tenth resistor R13 is electrically connected to the first input pin 3 of the interface P1. It should be noted that the interface P1 is a four-wire interface, which is a new type of photoeye interface including: 12v, output signal DO_OUT, GND and PWM input signal PWM_EXT. Compared with the traditional photoeye, the new doll photoeye removes the potentiometer and uses an external PWM signal to control the photoeye sensing distance, which is convenient for realizing remote adjustment of the main control board. It can be used as a new type of doll machine gift photoeye, and has 6 pairs of infrared transmitting and receiving tubes. The infrared diffuse reflection principle can be used to realize the judgment of the doll machine gift falling, and the external PWM pulse signal can be used to control the infrared sensing distance.

[0070] Furthermore, Figure 3(k) is a circuit schematic diagram eleven of a device for detecting a drop of an article in an embodiment of the utility model. Figure 3(k) shows a circuit schematic diagram of an indicator light module. The indicator light module shown in Figure 3(k) includes: an LED (D19) and an eleventh resistor R33. The input end of the indicator light module includes the positive electrode of the LED, the power supply end of the indicator light module includes one end of the eleventh resistor R33, the positive electrode of the LED is electrically connected to the first output pin PA0 of the main control chip, one end of the eleventh resistor R33 is electrically connected to the third power supply voltage terminal 5V, and the negative electrode of the LED is electrically connected to the other end of the eleventh resistor R33.

[0071] See also Figure 4 , Figure 4 : is a structural block diagram of a claw machine in an embodiment of the utility model, such as Figure 4 The claw machine shown in the figure comprises at least Figure 1 , Figure 2 Or the item drop detection device shown in Figure 3. The drop detection device can be installed at the doll outlet of the claw machine, so that when dolls or other items in the machine fall, it can be detected in time.

[0072] The utility model provides a claw machine, which has a drop detection device that can adjust the infrared sensing distance through an external pulse signal sent from the outside, and can adjust the photoeye sensing distance without disassembling the machine for manual adjustment, which not only improves the convenience of "photoeye" adjustment, but also improves the efficiency of object drop detection. The output signal of the main control module, such as the object drop signal, can be optically isolated, and an audio-visual prompt can be made for the object drop, thereby improving the user experience.

[0073] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A device for detecting the drop of an object, characterized in that: The drop detection device comprises: Main control module, infrared transmitting module, infrared receiving module, signal comparison module and output module; The output end of the main control module is electrically connected to the input end of the infrared transmitting module and the input end of the output module respectively, the output end of the signal comparison module is electrically connected to the input end of the main control module; the input end of the signal comparison module is electrically connected to the output end of the infrared transmitting module and the output end of the infrared receiving module; The main control module is used to receive an external pulse signal and output the external pulse signal to the infrared transmitting module; The infrared transmitting module is used to receive the external pulse signal, output a reference signal corresponding to the external pulse signal to the signal comparison module, and output a transmitting signal of the sensing intensity corresponding to the external pulse signal to adjust the infrared sensing distance; The infrared receiving module is used to receive infrared sensing signals and output the infrared sensing signals to the signal comparison module; The signal comparison module is used to receive the infrared sensing signal and the reference signal, and when the infrared sensing signal is greater than the reference signal, output an item drop signal to the main control module; The main control module is also used to receive the item drop signal and output the item drop signal to the output module; The output module is used to receive the item drop signal and output the item drop signal after optical coupling isolation.

2. The drop detection device according to claim 1, characterized in that: The drop detection device also includes an indicator light module and a power supply module; The output end of the main control module is also electrically connected to the input end of the indicator light module; the power supply voltage end of the power supply module is electrically connected to the power supply end of the main control module, the infrared transmitting module, the infrared receiving module, the signal comparison module, the output module and the indicator light module respectively; The main control module is also used to output an indicator light control signal to the indicator light module when receiving the item drop signal, and the indicator light module is used to receive the indicator light control signal to realize the item drop prompt; The power supply module is used to output a first power supply signal to the infrared transmitting module, the infrared receiving module and the signal comparing module, and to output a second power supply signal to the main control module, the output module and the indicator light module.

3. The drop detection device according to claim 2, characterized in that: The power module at least includes a first voltage stabilizing chip, a second voltage stabilizing chip, a first diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor; The cathode of the first diode is electrically connected to the first output pin of the interface; the anode of the first diode is electrically connected to the first power supply voltage terminal, one end of the first capacitor, one end of the second capacitor, and the input pin of the first voltage stabilizing chip; the output pin of the first voltage stabilizing chip is electrically connected to the second power supply voltage terminal, one end of the third capacitor, one end of the fourth capacitor, one end of the fifth capacitor, and the input pin of the second voltage stabilizing chip; the output pin of the second voltage stabilizing chip is electrically connected to the third power supply voltage terminal, one end of the sixth capacitor, and one end of the seventh capacitor; The other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the sixth capacitor and the other end of the seventh capacitor as well as the ground pin of the first voltage stabilizing chip and the ground pin of the second voltage stabilizing chip are all grounded.

4. The drop detection device according to claim 3, characterized in that: The main control module at least includes: a main control chip, an eighth capacitor and a first resistor, the output end of the main control module at least includes a first output pin, a second output pin and one end of the first resistor of the main control chip; the input end of the main control module at least includes an input pin of the main control chip, and the power supply end of the main control module includes a power supply pin of the main control chip; The third power supply voltage terminal is electrically connected to the power supply pin of the main control chip and one end of the eighth capacitor, respectively, and the other end of the eighth capacitor is grounded; one end of the first resistor is electrically connected to the input end of the infrared emission module, and one end of the first resistor is also electrically connected to the second output pin of the interface; the first output pin of the main control chip is electrically connected to the input end of the indicator light module; the second output pin of the main control chip is electrically connected to the input end of the output module, and the input pin of the main control chip is electrically connected to the output end of the signal comparison module.

5. The drop detection device according to claim 4, characterized in that: The infrared emitting module at least includes an infrared emitting tube, a ninth capacitor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a triode, the input end of the infrared emitting module includes at least one end of the fourth resistor, and the output end of the infrared emitting module includes one end of the third resistor; one end of the first resistor is electrically connected to one end of the fourth resistor; one end of the third resistor is electrically connected to the input end of the signal comparison module; The other end of the fourth resistor is electrically connected to one end of the fifth resistor and the base of the transistor respectively; the collector of the transistor is electrically connected to the positive electrode of the infrared emitting tube respectively; the negative electrode of the infrared emitting tube is electrically connected to the second power supply voltage terminal respectively; One end of the fourth resistor is also electrically connected to one end of the third resistor; one end of the third resistor is also electrically connected to one end of the ninth capacitor and one end of the second resistor; the other end of the second resistor is electrically connected to the second power supply voltage terminal; The other end of the ninth capacitor, the other end of the third resistor, the other end of the fifth resistor, and the emitter of the transistor are all grounded.

6. The drop detection device according to claim 5, characterized in that: The infrared receiving module includes: an infrared receiving tube, a tenth capacitor, an eleventh capacitor, a sixth resistor, and a seventh resistor; the output end of the infrared receiving module includes at least one end of the tenth capacitor; the power supply end of the infrared receiving module includes at least the positive electrode of the infrared receiving tube, and one end of the tenth capacitor is electrically connected to the input end of the signal comparison module; One end of the tenth capacitor is also electrically connected to one end of the sixth resistor; the other end of the tenth capacitor is electrically connected to one end of the eleventh capacitor, one end of the seventh resistor and the negative electrode of the infrared receiving tube; the positive electrode of the infrared receiving tube is electrically connected to the second power supply voltage terminal; The other end of the sixth resistor, the other end of the seventh resistor and the other end of the eleventh capacitor are all grounded.

7. The drop detection device according to claim 6, characterized in that: The signal comparison module includes: a comparator, a twelfth capacitor, an eighth resistor, and a thirteenth capacitor; the input end of the signal comparison module includes at least a first input pin and a second input pin of the comparator, the output end of the signal comparison module includes at least an output pin of the comparator, and the power supply end of the signal comparison module includes at least a power supply pin of the comparator; The output pin of the comparator is electrically connected to the input pin of the main control chip; the first input pin of the comparator is electrically connected to one end of the third resistor, and the second input pin of the comparator is electrically connected to one end of the tenth capacitor; the second power supply voltage end is electrically connected to the power supply pin of the comparator and one end of the thirteenth capacitor, respectively, and the output pin of the comparator is also electrically connected to one end of the twelfth capacitor and one end of the eighth resistor, respectively; The other end of the eighth resistor is electrically connected to the third power supply voltage terminal; the other end of the twelfth capacitor and the other end of the thirteenth capacitor are both grounded.

8. The drop detection device according to claim 7, characterized in that: The output module includes: a photoelectric coupler, a ninth resistor, and a tenth resistor; the input end of the output module includes at least one end of the ninth resistor, and the power supply end of the output module includes the positive electrode of the light-emitting diode of the photoelectric coupler; One end of the ninth resistor is electrically connected to the second output pin of the main control chip, the other end of the ninth resistor is electrically connected to the positive electrode of the light-emitting diode of the photocoupler, and the negative electrode of the light-emitting diode of the photocoupler is electrically connected to the third power supply voltage end; the emitter of the phototransistor of the photocoupler is grounded; the collector of the phototransistor of the photocoupler is electrically connected to one end of the tenth resistor, and the other end of the tenth resistor is electrically connected to the first input pin of the interface.

9. The drop detection device according to claim 8, characterized in that: The indicator light module includes: an LED and an eleventh resistor, the input end of the indicator light module includes the positive electrode of the LED, the power supply end of the indicator light module includes one end of the eleventh resistor, the positive electrode of the LED is electrically connected to the first output pin of the main control chip, one end of the eleventh resistor is electrically connected to the third power supply voltage end, and the cathode of the LED is electrically connected to the other end of the eleventh resistor.

10. A claw machine, characterized in that: The claw machine at least includes a drop detection device for an item as described in any one of claims 1 to 9.

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