Shower instant display system

Abstract

The utility model discloses a shower instant display system, which comprises a power supply module, a temperature sensor, a master control module, a display module and a switch module, the power supply module comprises a generator module, the generator module is connected with a water pipe, the temperature sensor is connected with the generator module, the generator module comprises an NTC thermistor, and the NTC thermistor is connected with the master control module. The temperature sensor detects the temperature of outlet water of the water pipe through the NTC thermistor, the switch module comprises a switch Hall sensor, the switch Hall sensor is used for detecting the key state of the shower timely display system, and the display module comprises a lamp array module and / or a lamp strip module. The switch module, the temperature sensor, the display module and the generator module are all connected with the master control module. According to the utility model, the temperature of the shower system and the switching state of the water switch can be displayed in time, thereby facilitating the use of a user.

Description

Technical Field

[0001] The utility model relates to a shower system, in particular to an instant shower display system. Background Art

[0002] Shower products are common household appliances. The current shower systems cannot display the water usage status of a certain water flow in real time. As a result, when a user is bathing, a certain water flow is turned on without noticing, and the user may be caught off guard by cold water. Or the hot water is turned on but the cold water is not turned on, and a certain water flow was not turned off during the last use, resulting in scalding. The shower system is also difficult to use, and the elderly or children may have difficulty using it, making it very inconvenient to use. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model aims to provide a shower instant display system, which can timely display the temperature of the shower system and the switching status of the water switch, thereby facilitating the use of the user.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A shower instant display system comprises a power supply module, a temperature sensor, a main control module, a display module and a switch module, wherein the power supply module comprises a generator module, the generator module is connected to a water pipe, the temperature sensor is connected to the generator module, the generator module comprises an NTC thermistor, the temperature sensor detects the temperature of water outlet from the water pipe through the NTC thermistor, the switch module comprises a switch Hall sensor, the switch Hall sensor is used to detect the key status of the shower instant display system, the display module comprises a light array module and / or a light strip module, the switch module, the temperature sensor, the display module and the generator module are all connected to the main control module.

[0006] The power supply module also includes a generator interface input circuit connected to the generator module, and the generator interface input circuit includes a rectifier, a filter, a first voltage stabilizer and a second voltage stabilizer. The three-phase electricity is connected to the rectifier, the filter, the first voltage stabilizer and the second voltage stabilizer in sequence. After the three-phase electricity is rectified by the rectifier, it is filtered by the filter. The filtered three-phase electricity is stabilized by the first voltage stabilizer into a first power supply with a voltage of 5V and a current of 1.5A. The first power supply is stabilized by the second voltage stabilizer into a second power supply with a voltage of 3.3V and a current of 1A. The three-phase electricity is connected to the NTC thermistor through the connector CN1.

[0007] Optionally, the main control module includes a resistor R3, a capacitor C8, an STM32 chip and a connector FPC, the STM32 chip is connected to a generator module, a switch module, and a display module through a connector FPC, the switch module includes a first Hall sensor, a second Hall sensor, and a third Hall sensor, and the first pin and the second pin and the sixteenth pin of the STM32 chip are respectively connected to the output of the first Hall sensor, the second Hall sensor, and the third Hall sensor through a connector FPC; the ninth pin and the tenth pin, the eleventh pin of the STM32 chip are respectively connected to the input of the first Hall sensor, the second Hall sensor, and the third Hall sensor through a connector FPC; the 15th pin of the STM32 chip is the RGB DATE end, the 14th pin of the STM32 chip is the SCK end of the STM32 chip, the 13th pin of the STM32 chip is the RCK end of the STM32 chip, the 12th pin of the STM32 chip is the DAT end of the STM32 chip, the 7th pin of the STM32 chip is connected to power supply 3V by resistor R3, the 4th pin of the STM32 chip is connected to power supply 3V, the 5th pin of the STM32 chip is grounded, and capacitor C8 is connected between the 4th pin and the 5th pin.

[0008] Optional, see Figure 5 As shown, the switch module includes a first Hall sensor, a second Hall sensor, and a third Hall sensor. The first Hall sensor, the second Hall sensor, and the third Hall sensor are respectively connected to the connector U5, the 14th pin of the connector U5 is connected to the light strip module, and the 6th pin, the 5th pin, the 4th pin, the 3rd pin, the 2nd pin, the 1st pin, the 16th pin, the 15th pin, and the 12th pin of the connector U5 are respectively connected to the STM32 chip.

[0009] Optionally, the lamp array module includes a first 74HC595D chip, a second 74HC595D chip, a capacitor C9, a capacitor C10 and a lamp group, the 16th pin of the first 74HC595D chip is connected to a 3V power supply, the 14th pin of the first 74HC595 is connected to the DAT end of the STM32 chip, the 12th pin of the first 74HC595D chip is connected to the RCK end of the STM32 chip, the 11th pin of the first 74HC595D chip is connected to the SCK end of the STM32 chip, the 10th pin of the first 74HC595D chip is connected to the 3V power supply, and the 10th pin of the first 74HC595D chip is grounded through the capacitor C9; the 15th pin, the 1st pin, the 2nd pin, the The 3rd pin, the 4th pin, the 5th pin, the 6th pin and the 7th pin are connected to the connection point X1, the connection point X2, the connection point X3, the connection point X4, the connection point X5, the connection point X6 and the connection point X7 in sequence; the 9th pin of the first 74HC595D chip is connected to the 14th pin of the second 74HC595D chip; the 16th pin of the second 74HC595D chip is connected to the 3V power supply, the 12th pin of the second 74HC595D chip is connected to the RCK end of the STM32 chip, the 11th pin of the second 74HC595D chip is connected to the SCK end of the STM32 chip, the 10th pin of the second 74HC595D chip is connected to the 3V power supply, and the 10th pin of the second 74HC595D chip is grounded through capacitor C10; the The 15th pin, the 1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin and the 7th pin of the 74HC595D chip are connected to the connection point Y1, the connection point Y2, the connection point Y3, the connection point Y4, the connection point X5, the connection point Y6 and the connection point Y7 in sequence; the lamp group includes 7 groups of light-emitting diodes, each group includes 7 light-emitting diodes, and the cathodes of the 7 light-emitting diodes in each group are connected to one point to form connection points X1, X2, X3, X4, X5, X6, X7 and X8; the anode of the first light-emitting diode of the first group is connected to the anodes of the first light-emitting diodes in the other 6 groups to form connection point Y1, the cathodes of the second light-emitting diodes of the first group are connected to the anodes of the first light-emitting diodes in the other 6 groups to form connection point Y1, The positive electrode of the first light emitting diode is connected to the positive electrode of the second light emitting diode in the other 6 groups to form a connection point Y2, the positive electrode of the third light emitting diode in the first group is connected to the positive electrode of the third light emitting diode in the other 6 groups to form a connection point Y3, the positive electrode of the fourth light emitting diode in the first group is connected to the positive electrode of the fourth light emitting diode in the other 6 groups to form a connection point Y4, the positive electrode of the fifth light emitting diode in the first group is connected to the positive electrode of the fifth light emitting diode in the other 6 groups to form a connection point Y5, the positive electrode of the sixth light emitting diode in the first group is connected to the positive electrode of the sixth light emitting diode in the other 6 groups to form a connection point Y6, and the positive electrode of the seventh light emitting diode in the first group is connected to the positive electrode of the seventh light emitting diode in the other 6 groups to form a connection point Y7.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model displays the state of the button and the temperature of the water outlet through the light array module and / or the light strip module, and can timely display the temperature of the shower system and the switching state of the water switch, which is convenient for users. In addition, by using a switch Hall sensor, when the switch is opened, the Hall sensor senses the approach of the magnet, and the Hall sensor is turned on, and the light array module and / or the light strip module are lit, thereby detecting the state of the button and displaying the switching state of the water switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a framework of a shower instant display system provided in this embodiment;

[0013] Figure 2 A schematic diagram of power distribution of a power supply module provided in this embodiment;

[0014] Figure 3 A schematic diagram of the principle of a power supply module provided in this embodiment;

[0015] Figure 4 A schematic diagram of the principle of a main control module provided in this embodiment;

[0016] Figure 5 A schematic diagram of the principle of a switch module provided in this embodiment;

[0017] Figure 6 A schematic diagram of the principle of a light array module provided in this embodiment;

[0018] Figure 7 A schematic diagram of the principle of a light strip module provided in this embodiment. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please refer to Figure 1-7 As shown, a shower instant display system, such as Figure 1As shown, it includes: a power supply module, a temperature sensor, a main control module, a display module, and a switch module, wherein the power supply module includes a generator module, the generator module is connected to a water pipe, the temperature sensor is connected to the generator module, the generator module includes an NTC thermistor, and the temperature sensor detects the temperature of the water outlet of the water pipe through the NTC thermistor. The switch module includes a switch Hall sensor, which is used to detect the button status of the shower timely display system. The display module includes a light array module and / or a light strip module, and the switch module, the temperature sensor, the display module, and the generator module are all connected to the main control module.

[0021] In the specific implementation, the thermistor is placed in the three-phase generator. When the flow exceeds the normal use range, the high-speed rotation of the generator bearing will generate self-heating. When the three-phase generator generates electricity, the generator induction coil will also generate self-heating, which will make the collected thermistor temperature value higher, thereby generating a deviation value from the actual water temperature. Then, the main control module will perform data correction based on the actual measurement values, and then achieve the matching of the temperature sensor collected value displayed by the digital tube with the actual water temperature.

[0022] In this embodiment, the state of the button and the temperature of the water outlet from the water pipe are displayed by the light array module and / or the light strip module.

[0023] In this embodiment, when the switch is opened, the Hall sensor senses the approach of the magnet, the Hall sensor is turned on, and the light array module and / or the light strip module are lit. On the soft board, if it is connected to the left, the digital display will be displayed, and if it is connected to the right, the circular light strip will be displayed.

[0024] Optionally, the power supply module also includes a generator interface input circuit connected to the generator module, the generator interface input circuit includes a rectifier, a filter, a first voltage stabilizing device and a second voltage stabilizing device, the three-phase electricity is connected to the rectifier, the filter, the first voltage stabilizing device and the second voltage stabilizing device in sequence, the three-phase electricity is rectified by the rectifier, and then filtered by the filter, the filtered three-phase electricity is then stabilized by the first voltage stabilizing device into a first power supply with a voltage of 5V and a current of 1.5A, the first power supply is then stabilized by the second voltage stabilizing device into a second power supply with a voltage of 3.3V and a current of 1A, and the three-phase electricity is connected to the NTC thermistor through the connector CN1.

[0025] Specifically, the power distribution diagram of the power supply module is as follows: Figure 2As shown, three generators are connected to the water pipe. Inside the product, a thermistor NTC is installed inside the generator to monitor the water temperature. The first power supply with a voltage of 5V and a current of 1.5A is used to power the Hall sensor, and the second power supply with a voltage of 3.3V and a current of 1A is used to power the main control module and the display module.

[0026] The specific circuit diagram is as follows Figure 3 As shown, the generator interface input circuit is a three-phase generator interface input circuit, i.e., three phases u, v, and w. u, v, and w are rectified by diodes VD1, VD2, VD3, VD4, VD5, and VD6, filtered by aluminum electrolytic capacitor U1 and ceramic capacitors C1 and C12, and then stabilized by LOO1 to be a power supply with a voltage of 5V and a current of 1.5A. The 5V power supply is then stabilized by U11 to be a power supply with a voltage of 3.3V and a current of 1A.

[0027] Optional, such as Figure 4 As shown, the main control module includes a resistor R3, a capacitor C8, an STM32 chip and a connector FPC, the STM32 chip is connected to a switch module and a light strip module through a connector FPC, the switch module includes a first Hall sensor, a second Hall sensor, and a third Hall sensor, and the first pin and the second pin and the sixteenth pin of the STM32 chip are respectively connected to the output of the first Hall sensor, the second Hall sensor, and the third Hall sensor through a connector FPC; the ninth pin and the tenth pin and the eleventh pin of the STM32 chip are respectively connected to the input of the first Hall sensor, the second Hall sensor, and the third Hall sensor through a connector FPC; the 15th pin of the STM32 chip is the RGB DATE end, the 14th pin of the STM32 chip is the SCK end of the STM32 chip, the 13th pin of the STM32 chip is the RCK end of the STM32 chip, the 12th pin of the STM32 chip is the DAT end of the STM32 chip, the 7th pin of the STM32 chip is connected to power supply 3V by R3, the 4th pin of the STM32 chip is connected to power supply 3V, the 5th pin of the STM32 chip is grounded, and capacitor C8 is connected between the 4th pin and the 5th pin.

[0028] In this embodiment, DAT, SCK, RCK, LE1, and LE2 are digital tube control terminals, DAT, SCK, and RCK are shift register control pins, and LE1 and LE2 are digital tube bit selections. RGB_DATE is the pin for sending light strip data.

[0029] Optional, see Figure 5As shown, the switch module includes a first Hall sensor, a second Hall sensor, and a third Hall sensor. The first Hall sensor, the second Hall sensor, and the third Hall sensor are respectively connected to the connector U5. The 14th pin of the connector U5 is connected to the light strip module. The 6th pin, the 5th pin, the 4th pin, the 3rd pin, the 2nd pin, the 1st pin, the 16th pin, the 15th pin, and the 12th pin of the connector U5 are respectively connected to the STM32 chip; wherein, the first Hall sensor includes a resistor R13, a resistor R14, a first Hall chip U1, and a magnetic field source, one end of the resistor R13, R14 is pulled up, and the other end is connected to the second pin of the first Hall chip U1 through an LED, and the third pin of the first Hall chip U1 The pin is grounded, and the first pin of the first Hall chip U1 is connected to the power supply 5V; the second Hall sensor includes resistors R15, R16, a second Hall chip U2 and a magnetic field source, one end of the resistors R15 and R16 is pulled up, and the other end is connected to the second pin of the second Hall chip U2 through an LED, the third pin of the second Hall chip U2 is grounded, and the first pin of the second Hall chip U2 is connected to the power supply 5V; the third Hall sensor includes resistors R17, R18, a third Hall chip U3 and a magnetic field source, one end of the resistors R17 and R18 is pulled up, and the other end is connected to the second pin of the third Hall chip U3 through an LED, the third pin of the third Hall chip U3 is grounded, and the first pin of the third Hall chip U3 is connected to the power supply 5V.

[0030] The two connectors U5 and U4 are both soft board gold fingers, which are mainly used to connect the main control module to complete data transmission and status acquisition of Hall components.

[0031] In this embodiment, the state of the switch is monitored by the switch Hall. When the switch pops open, the Hall sensor senses the approach of the magnetic ring. The switch Hall sensor in this embodiment collects the high and low levels of the Hall sensor output by the single-chip microcomputer to determine the state of the button being pressed and popped open. The corresponding display icon is displayed by the matrix light array, and the corresponding LED is displayed at the same time.

[0032] Optional, see Figure 6As shown, the lamp array module includes a first 74HC595D chip, a second 74HC595D chip, a capacitor C9, a capacitor C10 and a lamp group, the 16th pin of the first 74HC595D chip is connected to a 3V power supply, the 14th pin of the first 74HC595 is connected to the DAT end of the STM32 chip, the 12th pin of the first 74HC595D chip is connected to the RCK end of the STM32 chip, the 11th pin of the first 74HC595D chip is connected to the SCK end of the STM32 chip, the 10th pin of the first 74HC595D chip is connected to the 3V power supply, and the 10th pin of the first 74HC595D chip is grounded through the capacitor C9; the 15th pin, the 1st pin, the 2nd pin, the 3rd pin of the first 74HC595D chip are connected to the ground ... Pin 3, pin 4, pin 5, pin 6, and pin 7 are connected to connection point X1, connection point X2, connection point X3, connection point X4, connection point X5, connection point X6, and connection point X7 in sequence; pin 9 of the first 74HC595D chip is connected to pin 14 of the second 74HC595D chip; pin 16 of the second 74HC595D chip is connected to a 3V power supply, pin 12 of the second 74HC595D chip is connected to the RCK end of the STM32 chip, pin 11 of the second 74HC595D chip is connected to the SCK end of the STM32 chip, pin 10 of the second 74HC595D chip is connected to a 3V power supply, and pin 10 of the second 74HC595D chip is grounded through capacitor C10; The 15th pin, the 1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin and the 7th pin of the 4HC595D chip are connected to the connection point Y1, the connection point Y2, the connection point Y3, the connection point Y4, the connection point X5, the connection point Y6 and the connection point Y7 in sequence; the lamp group includes 7 groups of light-emitting diodes, each group includes 7 light-emitting diodes, and the cathodes of the 7 light-emitting diodes in each group are connected to one point to form connection points X1, X2, X3, X4, X5, X6, X7 and X8; the anode of the first light-emitting diode of the first group is connected to the anodes of the first light-emitting diodes in the other 6 groups to form connection point Y1, the cathodes of the second light-emitting diodes of the first group are connected to the anodes of the first light-emitting diodes in the other 6 groups to form connection point Y1, The positive electrode of the first light emitting diode is connected to the positive electrode of the second light emitting diode in the other 6 groups to form a connection point Y2, the positive electrode of the third light emitting diode in the first group is connected to the positive electrode of the third light emitting diode in the other 6 groups to form a connection point Y3, the positive electrode of the fourth light emitting diode in the first group is connected to the positive electrode of the fourth light emitting diode in the other 6 groups to form a connection point Y4, the positive electrode of the fifth light emitting diode in the first group is connected to the positive electrode of the fifth light emitting diode in the other 6 groups to form a connection point Y5, the positive electrode of the sixth light emitting diode in the first group is connected to the positive electrode of the sixth light emitting diode in the other 6 groups to form a connection point Y6, and the positive electrode of the seventh light emitting diode in the first group is connected to the positive electrode of the seventh light emitting diode in the other 6 groups to form a connection point Y7.

[0033] In this embodiment, a light array module is added to the original traditional product. The light array is controlled by two shift registers, both of which use 74HC595D chips. One shift register is the x-axis of the light array, and the other shift register controls the y-axis of the light array. The light array displays the state of the key as a graph, which is controlled by a single-chip microcomputer. The 9th pin of one shift register is connected to the 14th pin of another shift register to control the data output of the light array.

[0034] In a specific implementation, the display module may also include a light strip module, see Figure 7 As shown, the characteristic is that only one data line is needed to control all the lights to display different colors.

[0035] Figure 6 The light array module on display is mainly used to display the status icon of this product, and the status icon is displayed after the key is pressed. Among them, the 14th pin of a register, that is, the DAT terminal is the shift register output terminal of the single-chip digital display. The first shift register controls the x-axis of the light array module. The LED connected to the light array module is added with a current limiting resistor to prevent the LED from burning due to excessive current. The second shift register controls the y-axis of the light array module. The shift register CLK is the clock input terminal, and RCK is the shift register latch terminal. Figure 7 The light strip modules on display can form a circular ambient light. Figure 7 It is ws2812b lamp bead, which has the characteristic of only needing one data line to control the color of a string of lamp beads, and can be used for atmosphere lighting.

[0036] In this embodiment, the utility model completes the temperature collection and the perception of the switch state in the structure and the design of the power supply. Specifically, the power input is a three-phase generator, and the generator generates electricity by water flow; the temperature sensor is a thermistor, and the single-chip microcomputer obtains the temperature by collecting the voltage change of the thermistor.

[0037] In specific implementation, the present invention uses a display module to display the temperature of the shower system and the water switching status of multiple functions (including overhead water discharge / hand shower water discharge / bathtub water discharge) through light-emitting elements in a concise and effective manner. In some embodiments, by arranging the light-emitting elements, a light array display is realized, and the light array can also be used to display the corresponding water switching status icon. That is, as long as any one or multiple functions are used at the same time, the display state will be in progress, and the temperature of the water flow will also be displayed in real time to prevent burns.

[0038] like Figure 5In the figure, the first, second and third Hall sensors U1, U2 and U3 are Hall elements, which mainly monitor the opening and closing of the key switch of the utility model product. When the key in the product is turned on, the LED light will be lit, and the information on the glass cover of the product will be displayed. At the same time, the light array will display the icon of the corresponding status. After closing, the light array will go out, and the icon on the corresponding glass cover will not be displayed. The left and right are FPCB soft board gold fingers, which are not components. They are mainly connected to the PCB mainboard to complete the data transmission and the status collection of the Hall components.

[0039] Moreover, when the flow rate is too large, heat will be generated inside the generator, and the temperature display value can be compensated or corrected through the data correction algorithm, thereby reducing the error between the displayed temperature and the actual water temperature. The algorithm here is not the invention point of the utility model and will not be discussed in detail.

[0040] The implementation methods of the utility model are not limited to this. According to the above content of the utility model, by using common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the utility model, the utility model can also make other various forms of modification, replacement or change, all of which fall within the scope of protection of the utility model.

Claims

1. A shower instant display system, characterized in that: include: A power supply module, a temperature sensor, a main control module, a display module and a switch module, wherein the power supply module includes a generator module, the generator module is connected to a water pipe, the temperature sensor is connected to the generator module, the generator module includes an NTC thermistor, the temperature sensor detects the temperature of the water outlet of the water pipe through the NTC thermistor, the switch module includes a switch Hall sensor, the switch Hall sensor is used to detect the button status of the shower timely display system, the display module includes a light array module and / or a light strip module, the switch module, the temperature sensor, the display module, and the generator module are all connected to the main control module.

2. The instant shower display system according to claim 1, characterized in that: The power supply module also includes a generator interface input circuit connected to the generator module, and the generator interface input circuit includes a rectifier, a filter, a first voltage stabilizer and a second voltage stabilizer. The three-phase electricity is connected to the rectifier, the filter, the first voltage stabilizer and the second voltage stabilizer in sequence. After the three-phase electricity is rectified by the rectifier, it is filtered by the filter. The filtered three-phase electricity is stabilized by the first voltage stabilizer into a first power supply with a voltage of 5V and a current of 1.5A. The first power supply is stabilized by the second voltage stabilizer into a second power supply with a voltage of 3.3V and a current of 1A. The three-phase electricity is connected to the NTC thermistor through the connector CN1.

3. The instant shower display system according to claim 1, characterized in that: The main control module includes a resistor R3, a capacitor C8, an STM32 chip and a connector FPC, the STM32 chip is connected to a generator module, a switch module and a display module through a connector FPC, the switch module includes a first Hall sensor, a second Hall sensor and a third Hall sensor, and the first pin, the second pin and the sixteenth pin of the STM32 chip are respectively connected to the output of the first Hall sensor, the second Hall sensor and the third Hall sensor through a connector FPC; the ninth pin, the tenth pin and the eleventh pin of the STM32 chip are respectively connected to the input of the first Hall sensor, the second Hall sensor and the third Hall sensor through a connector FPC; the 15th pin of the STM32 chip is an RGB DATE end, the 14th pin of the STM32 chip is the SCK end of the STM32 chip, the 13th pin of the STM32 chip is the RCK end of the STM32 chip, the 12th pin of the STM32 chip is the DAT end of the STM32 chip, the 7th pin of the STM32 chip is connected to power supply by resistance R3, the 4th pin of the STM32 chip is connected to power supply, the 5th pin of the STM32 chip is grounded, and capacitor C8 is connected between the 4th pin and the 5th pin.

4. The instant shower display system according to claim 3, characterized in that: The switch module includes a first Hall sensor, a second Hall sensor, and a third Hall sensor. The first Hall sensor, the second Hall sensor, and the third Hall sensor are respectively connected to the connector U5. The 14th pin of the connector U5 is connected to the light strip module. The 5th pin, the 3rd pin, the 1st pin, the 16th pin, the 15th pin, and the 12th pin of the connector U5 are respectively connected to the STM32 chip.

5. The instant shower display system according to claim 3, characterized in that: The lamp array module comprises a first 74HC595D chip, a second 74HC595D chip, a capacitor C9, a capacitor C10 and a lamp group, wherein the 16th pin of the first 74HC595D chip is connected to a 3V power supply, the 14th pin of the first 74HC595 is connected to a DAT terminal of an STM32 chip, the 12th pin of the first 74HC595D chip is connected to an RCK terminal of the STM32 chip, the 11th pin of the first 74HC595D chip is connected to an SCK terminal of the STM32 chip, the 10th pin of the first 74HC595D chip is connected to a 3V power supply, and the 10th pin of the first 74HC595D chip is grounded through a capacitor C9; the 15th pin, the 1st pin, the 2nd pin, the 3rd pin of the first 74HC595D chip are connected to a ground, and the 15th pin, the 1st pin, the 2nd pin, the 3rd pin of the first 74HC595D chip are connected to a 3V power supply. The 9th pin of the first 74HC595D chip is connected to the 14th pin of the second 74HC595D chip; the 16th pin of the second 74HC595D chip is connected to the 3V power supply, the 12th pin of the second 74HC595D chip is connected to the RCK end of the STM32 chip, the 11th pin of the second 74HC595D chip is connected to the SCK end of the STM32 chip, the 10th pin of the second 74HC595D chip is connected to the 3V power supply, and the 10th pin of the second 74HC595D chip is grounded through capacitor C10; The 15th pin, the 1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin and the 7th pin of the HC595D chip are connected to the connection point Y1, the connection point Y2, the connection point Y3, the connection point Y4, the connection point X5, the connection point Y6 and the connection point Y7 in sequence; the lamp group includes 7 groups of light emitting diodes, each group includes 7 light emitting diodes, and the cathodes of the 7 light emitting diodes in each group are connected to one point to form the connection point X1, the connection point X2, the connection point X3, the connection point X4, the connection point X5, the connection point X6, the connection point X7 and the connection point X8; the anode of the first light emitting diode of the first group is connected to the anodes of the first light emitting diodes in the other 6 groups to form the connection point Y1, the cathodes of the second light emitting diodes of the first group are connected to the anodes of the first light emitting diodes in the other 6 groups to form the connection point Y1, the cathodes of the second light emitting diodes of the first group are connected to the anodes of the first light emitting diodes in the other 6 groups to form the connection point Y8. The positive electrode of the first group is connected to the positive electrode of the second light-emitting diode in the other 6 groups to form a connection point Y2, the positive electrode of the third light-emitting diode in the first group is connected to the positive electrode of the third light-emitting diode in the other 6 groups to form a connection point Y3, the positive electrode of the fourth light-emitting diode in the first group is connected to the positive electrode of the fourth light-emitting diode in the other 6 groups to form a connection point Y4, the positive electrode of the fifth light-emitting diode in the first group is connected to the positive electrode of the fifth light-emitting diode in the other 6 groups to form a connection point Y5, the positive electrode of the sixth light-emitting diode in the first group is connected to the positive electrode of the sixth light-emitting diode in the other 6 groups to form a connection point Y6, and the positive electrode of the seventh light-emitting diode in the first group is connected to the positive electrode of the seventh light-emitting diode in the other 6 groups to form a connection point Y7.

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