Digital display shower system

Abstract

The digital display shower system comprises a shower device body, a control box is arranged in the middle of the shower device body, a water mixing valve is installed on the rear side of the shower device body, the bottom of the shower device body is connected with a cold water inlet pipe and a hot water inlet pipe, and a plurality of functional modules are integrated in the control box and powered by a power source. A thermocouple circuit breaker, a flow detection device and an electric leakage protection device are arranged in the safety protection module, so that the equipment state can be monitored in real time, measures can be taken in time when the temperature is abnormal, the water flow is abnormal or electric leakage occurs, and the use safety is guaranteed; after a specific algorithm is used for processing through a left voice processing chip, voice control, such as on-off operation and water temperature adjustment, of a shower system is achieved through a lower audio power amplifier, the operation convenience is greatly improved, a temperature control module obtains data by arranging three temperature sensors, the opening degree of a cold water valve and the opening degree of a hot water valve in a water mixing valve are accurately controlled, and the operation efficiency is improved. And accurate water temperature adjustment is realized.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent bathroom technology, specifically relating to a digital display shower system. Background Technology

[0002] Shower equipment is a bathroom device that controls water flow to achieve the functions of cleaning and relaxing the human body. It is usually composed of core components such as shower head, valve body, hose, and bracket. Its design integrates mechanical, electronic, and material technologies to meet users' personalized needs for water temperature, flow rate, and spray pattern, while taking into account water conservation, safety, and durability.

[0003] However, existing traditional mechanical temperature control requires repeated adjustments, posing a risk of burns. It lacks intelligent protection mechanisms for special groups such as children and the elderly, lacks personalized configuration memory functions in multi-user scenarios, and lacks a real-time compensation mechanism when water temperature fluctuates. Utility Model Content

[0004] The purpose of this utility model is to provide a digital display shower system to solve the problems mentioned in the background art, such as the need for repeated adjustments of existing traditional mechanical temperature control, the risk of scalding, the lack of intelligent protection mechanisms for special groups such as children and the elderly, the lack of personalized configuration memory function in multi-user scenarios, and the lack of real-time compensation mechanism for water temperature fluctuations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a digital display shower system, comprising a shower device body;

[0006] A support rod is provided above the main body of the shower device, a top shower head is provided above the support rod, and a handheld shower head is provided on the side of the main body of the shower device.

[0007] A control box is located in the middle of the main body of the shower device. A mixing valve is located at the rear of the control box. A cold water inlet pipe and a hot water inlet pipe are located at the bottom of the mixing valve. A safety protection module is located inside the control box. A voice control module is located on the right side of the safety protection module. A temperature control module is located at the bottom of the safety protection module. The control box is powered by a power source.

[0008] Preferably, a thermocouple circuit breaker is installed inside the safety protection module, a flow detector is installed below the thermocouple circuit breaker, and a leakage protection device is installed at the bottom of the flow detector.

[0009] Preferably, a microphone array is provided on the right side of the voice control module, a voice processing chip is provided on the left side of the microphone array, and an audio amplifier is provided below the voice processing chip.

[0010] Preferably, a mixing valve actuator is provided at the middle position of the temperature control module, a water pressure sensor is provided at the right side position of the mixing valve actuator, and a temperature sensor is provided at the left side position of the mixing valve actuator.

[0011] Preferably, the speech processing chip uses spectral subtraction for noise suppression, the speech processing chip uses the DTW dynamic time warping algorithm, the speech processing chip uses 13MFCC dimensional coefficients, and the speech processing chip has a user identity matching cosine similarity greater than 0.8.

[0012] Preferably, the temperature sensor has three channels, and the temperature sensor data are T1, T2, and T3 respectively. The weighted average temperature T_avg = 0.5*T1 + 0.3*T2 + 0.2*T3. The dynamic compensation calculation is ΔP = current water pressure - reference water pressure, T_comp = 0.15*ΔP + 0.02*(dΔP / dt). The PWM output is Kp*e(t) + Ki*∫e(t)dt + Kd*de(t) / dt, and Kp / Ki / Kd are dynamically adjusted according to the preset temperature.

[0013] Preferably, a cold water valve and a hot water valve are provided inside the mixing valve, with the hot water valve opening degree = PWM_heat*(1+T_comp) and the cold water valve opening degree = PWM_cold*(1-T_comp).

[0014] Compared with the prior art, the present invention provides a digital display shower system, which has the following advantages:

[0015] 1. Through the configuration of the voice control module, microphone array, voice processing chip, and audio amplifier, spectral subtraction can accurately estimate the noise spectrum characteristics and subtract noise components from the noisy speech signal, thereby improving the accuracy of speech recognition. This allows the user's voice commands to be received and processed more clearly by the voice processing chip 15, reducing the possibility of erroneous operations. The DTW algorithm can use dynamic programming to perform non-linear matching and alignment of speech templates of different lengths and input speech on the time axis, thereby accurately recognizing the user's voice commands and improving the adaptability of the speech recognition system to various speech styles. This is achieved through the MFCC13. The system extracts speech features using MFCC, which simulates the perceptual characteristics of the human auditory system. It converts speech signals into a set of coefficients that can effectively represent speech features. The speech processing chip 15 achieves a cosine similarity greater than 0.8 for user identity matching. This cosine similarity-based user identity matching mechanism can effectively identify legitimate users. By calculating the cosine similarity between the input speech features and the pre-registered user speech features, a similarity greater than 0.8 indicates a high degree of matching between the current user and the registered user. This not only enhances the system's security and prevents illegal operations but also provides personalized shower settings for different users, improving the user experience.

[0016] 2. Through the settings of the temperature control module, mixing valve driver, water pressure sensor, and temperature sensor, the temperature sensor 21 is configured with three channels to acquire data T1, T2, and T3 respectively. The average temperature is calculated by weighted averaging T_avg = 0.5*T1 + 0.3*T2 + 0.2*T3. This multi-sensor fusion method can more comprehensively and accurately reflect the actual water temperature. By weighted averaging the three channels of data, the information from each sensor can be integrated, reducing errors and improving the accuracy of water temperature measurement, providing a reliable data foundation for subsequent precise temperature control. Through dynamic compensation calculation ΔP = current water pressure - reference water pressure, T_comp = 0.15ΔP + 0.02(dΔP / dt), the impact of water pressure changes on water temperature can be considered in real time. Fluctuations in water pressure directly affect the mixing ratio of hot and cold water, thus affecting the outlet water temperature. PWM output = Kpe(t) + Ki∫e(t)dt + Kd*d e(t) / dt, and Kp / Ki / Kd are dynamically adjusted according to the preset temperature. The PID (Proportional-Integral-Derivative) controller is a classic and effective control algorithm that can adjust the opening of the mixing valve in real time according to the error e(t) between the current water temperature and the preset water temperature and its rate of change, so that the water temperature can quickly and stably reach the preset value. The mixing valve 8 is equipped with a cold water valve and a hot water valve, and the opening of the hot water valve = PWM_heat*(1+T_comp), and the opening of the cold water valve = PWM_cold*(1-T_comp). This mixing valve opening adjustment method based on dynamic compensation and PWM control can accurately control the mixing ratio of hot and cold water according to real-time water pressure, water temperature and other information. When the water pressure or water temperature changes, the opening of the hot and cold water valves is adjusted to ensure that the outlet water temperature is always kept within the range set by the user, realizing highly accurate and stable water temperature control, which greatly improves the comfort of showering and user satisfaction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the circuit system in this utility model.

[0019] Figure 3 This is a schematic diagram of the voice command processing algorithm in this utility model.

[0020] Figure 4 This is a schematic diagram of the scenario mode switching algorithm in this utility model.

[0021] Figure 5 This is a schematic diagram of the core algorithm flow in this utility model.

[0022] In the diagram: 1. Shower unit body; 2. Support rod; 3. Overhead shower head; 4. Hand shower head; 5. Control box; 6. Cold water inlet pipe; 7. Hot water inlet pipe; 8. Mixing valve; 9. Power supply; 10. Safety protection module; 11. Thermocouple circuit breaker; 12. Flow detection; 13. Leakage protection; 14. Voice control module; 15. Voice processing chip; 16. Microphone array; 17. Audio amplifier; 18. Temperature control module; 19. Water pressure sensor; 20. Mixing valve driver; 21. Temperature sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figure 1-5 The digital display shower system shown includes a shower device body 1;

[0025] A support rod 2 is installed above the main body 1 of the shower device, a top shower head 3 is installed above the support rod 2, and a handheld shower head 4 is installed on the side of the main body 1 of the shower device.

[0026] A control box 5 is located in the middle of the main body 1 of the shower device. A mixing valve 8 is located at the rear of the control box 5. A cold water inlet pipe 6 and a hot water inlet pipe 7 are located at the bottom of the mixing valve 8. A safety protection module 10 is located inside the control box 5. A voice control module 14 is located on the right side of the safety protection module 10. A temperature control module 18 is located at the bottom of the safety protection module 10. The control box 5 is powered by a power supply 9.

[0027] A thermocouple circuit breaker 11 is installed inside the safety protection module 10. A flow detector 12 is installed below the thermocouple circuit breaker 11. A leakage protection device 13 is installed at the bottom of the flow detector 12.

[0028] A microphone array 16 is located on the right side of the voice control module 14, a voice processing chip 15 is located on the left side of the microphone array 16, and an audio amplifier 17 is located below the voice processing chip 15.

[0029] A mixing valve driver 20 is located in the middle of the temperature control module 18, a water pressure sensor 19 is located on the right side of the mixing valve driver 20, and a temperature sensor 21 is located on the left side of the mixing valve driver 20.

[0030] The speech processing chip 15 uses spectral subtraction for noise suppression, employs the DTW dynamic time warping algorithm, and uses MFCC 13-dimensional coefficients to achieve a cosine similarity greater than 0.8 for user identity matching.

[0031] Temperature sensor 21 has three channels, and the data from temperature sensor 21 are T1, T2, and T3 respectively. The weighted average temperature T_avg = 0.5*T1 + 0.3*T2 + 0.2*T3. The dynamic compensation calculation ΔP = current water pressure - reference water pressure, T_comp = 0.15*ΔP + 0.02*(dΔP / dt), and PWM output = Kp*e(t) + Ki*∫e(t)dt + Kd*de(t) / dt. Kp / Ki / Kd are dynamically adjusted according to the preset temperature.

[0032] The mixing valve 8 is equipped with a cold water valve and a hot water valve. The opening degree of the hot water valve is PWM_heat*(1+T_comp), and the opening degree of the cold water valve is PWM_cold*(1-T_comp).

[0033] In this embodiment, the specific implementation steps of a digital display shower system are as follows: First, voice is collected through a microphone array. After suppressing environmental noise using spectral subtraction, endpoint detection is performed using a dual-threshold energy detection algorithm. After valid voice is detected, the wake-up word template library is matched using the DTW algorithm. After successful wake-up confirmation, the MFCC coefficient containing 13-dimensional features is extracted. Next, user authentication is performed. A pre-stored voiceprint template is matched using cosine similarity calculation, with a threshold set to 0.8. In the instruction parsing stage, regular expressions are used to separate mode instructions and temperature instructions. The temperature instructions support natural language numerical parsing. Then, the conflict detection stage is entered. If the temperature exceeds 40℃ in child mode, the temperature is locked. If the flow rate exceeds 10L / min in elderly mode, a safety limit is triggered. Finally, the system is executed synchronously through three channels: TTS synthesized voice confirmation, MQTT protocol-issued hardware control instructions, and real-time feedback of RGB lighting effects.

[0034] like Figure 1 and Figure 2As shown, a control box 5 is located in the middle of the main body 1 of the shower device. A mixing valve 8 is located at the rear of the control box 5. A cold water inlet pipe 6 and a hot water inlet pipe 7 are located at the bottom of the mixing valve 8. A safety protection module 10 is located inside the control box 5. A voice control module 14 is located on the right side of the safety protection module 10. A temperature control module 18 is located at the bottom of the safety protection module 10. The control box 5 is powered by a power supply 9. A thermocouple circuit breaker 11 is located inside the safety protection module 10. A flow detector 12 is located at the bottom, and a leakage protection device 13 is located at the bottom of the flow detector 12. A microphone array 16 is located on the right side inside the voice control module 14, and a voice processing chip 15 is located on the left side of the microphone array 16. An audio amplifier 17 is located below the voice processing chip 15. A mixing valve driver 20 is located in the middle of the temperature control module 18, and a water pressure sensor 19 is located on the right side of the mixing valve driver 20. A temperature sensor 21 is located on the left side of the mixing valve driver 20.

[0035] Preferably, the mixing valve 8 on the rear side and the cold water inlet pipe 6 and hot water inlet pipe 7 at the bottom are arranged in a way that makes the supply and mixing of hot and cold water efficient and convenient. The internal thermocouple circuit breaker 11 can quickly cut off the circuit when the temperature is abnormal. The flow detector 12 at the bottom can monitor the water flow in real time. The leakage protection 13 at the bottom can effectively prevent leakage accidents. The microphone array 16 on the right side accurately collects voice commands. The voice processing chip 15 on the left side processes the commands efficiently. The audio amplifier 17 at the bottom enables accurate execution of commands, allowing users to easily control the shower system by voice. The mixing valve driver 20 in the middle accurately controls the opening of the mixing valve according to the received signal. The water pressure sensor 19 on the right side senses the water pressure change in real time. The temperature sensor 21 on the left side accurately obtains the water temperature information. Together, they ensure that the user is provided with water flow at a suitable temperature, which greatly improves the comfort of showering. The power supply 9 supplies power to the control box 5, ensuring the stable and reliable operation of each module.

[0036] like Figure 3-5 As shown, the speech processing chip 15 uses spectral subtraction for noise suppression, the speech processing chip 15 uses the DTW dynamic time warping algorithm, the speech processing chip 15 uses MFCC 13-dimensional coefficients, and the cosine similarity of the user identity matching of the speech processing chip 15 is greater than 0.8.

[0037] Preferably, spectral subtraction can accurately estimate the noise spectrum characteristics and subtract noise components from the noisy speech signal, thereby improving the accuracy of speech recognition. This allows the user's voice commands to be received and processed more clearly by the speech processing chip 15, reducing the possibility of misoperation. The DTW algorithm can use dynamic programming to perform nonlinear matching and alignment of speech templates of different lengths and input speech on the time axis, thereby accurately recognizing the user's voice commands and improving the adaptability of the speech recognition system to various speech styles. Speech features are extracted using MFCC 13-dimensional coefficients. MFCC can simulate the perceptual characteristics of the human auditory system, converting the speech signal into a set of coefficients that can effectively represent speech features. The cosine similarity of user identity matching by the speech processing chip 15 is greater than 0.8. This user identity matching mechanism based on cosine similarity can effectively identify legitimate users. By calculating the cosine similarity between the input speech features and the pre-registered user speech features, when the similarity is greater than 0.8, it indicates that the current user and the registered user have a high degree of identity matching. This not only enhances the security of the system and prevents illegal operations, but also provides personalized shower settings for different users, improving the user experience.

[0038] like Figure 3-5 As shown, temperature sensor 21 has three channels, and the data from temperature sensor 21 are T1, T2, and T3 respectively. The weighted average temperature T_avg = 0.5*T1 + 0.3*T2 + 0.2*T3. The dynamic compensation calculation ΔP = current water pressure - reference water pressure, T_comp = 0.15*ΔP + 0.02*(dΔP / dt), PWM output = Kp*e(t) + Ki*∫e(t)dt + Kd*de(t) / dt, Kp / Ki / Kd are dynamically adjusted according to the preset temperature. A cold water valve and a hot water valve are installed inside the mixing valve 8. The opening degree of the hot water valve = PWM_heat*(1+T_comp), and the opening degree of the cold water valve = PWM_cold*(1-T_comp).

[0039] Preferably, the temperature sensor 21 has three channels, acquiring data T1, T2, and T3 respectively. The average temperature is calculated by weighted averaging T_avg = 0.5T1 + 0.3T2 + 0.2*T3. This multi-sensor fusion method can more comprehensively and accurately reflect the actual water temperature. By weighted averaging the three channels of data, the information from each sensor can be integrated, reducing errors and improving the accuracy of water temperature measurement. This provides a reliable data foundation for subsequent precise temperature control. Through dynamic compensation calculation of ΔP = current water pressure - reference water pressure, and T_comp = 0.15ΔP + 0.02(dΔP / dt), the impact of water pressure changes on water temperature can be considered in real time. Fluctuations in water pressure directly affect the mixing ratio of hot and cold water, thus affecting the outlet water temperature. PWM output = Kpe(t) + Ki∫e(t)dt + Kd*de(t) / dt, and Kp / Ki The PID (Proportional-Integral-Derivative) controller dynamically adjusts the opening of the mixing valve based on the error e(t) between the current water temperature and the preset water temperature, as well as its rate of change. This allows the water temperature to quickly and stably reach the preset value. The mixing valve 8 contains both a cold water valve and a hot water valve. The opening of the hot water valve is calculated as PWM_heat*(1+T_comp), and the opening of the cold water valve is calculated as PWM_cold*(1-T_comp). This mixing valve opening adjustment method, based on dynamic compensation and PWM control, can accurately control the mixing ratio of hot and cold water according to real-time water pressure and temperature information. When water pressure or temperature changes, the opening of the hot and cold water valves is adjusted to ensure that the outlet water temperature remains within the user-set range. This achieves highly accurate and stable water temperature control, greatly improving shower comfort and user satisfaction.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A digital shower system, comprising a shower device body (1); A support rod (2) is arranged at an upper position of the shower device body (1), and a top spray shower (3) is arranged at an upper position of the support rod (2); a handheld shower (4) is arranged at a side position of the shower device body (1); characterized in that A control box (5) is arranged at a middle position of the shower device body (1), a mixing valve (8) is arranged at a rear position of the control box (5), a cold water inlet pipe (6) and a hot water inlet pipe (7) are arranged at a bottom position of the mixing valve (8), a safety protection module (10) is arranged at an inner position of the control box (5), a voice control module (14) is arranged at a right position of the safety protection module (10), and a temperature control module (18) is arranged at a bottom position of the safety protection module (10); and the control box (5) is powered by a power supply (9).

2. A digital shower system as claimed in claim 1, wherein: A thermocouple breaker (11) is arranged at an inner position of the safety protection module (10), a flow detection (12) is arranged below the thermocouple breaker (11), and a leakage protection (13) is arranged at a bottom position of the flow detection (12).

3. A digital shower system as claimed in claim 2, wherein: A microphone array (16) is arranged at an inner right position of the voice control module (14), a voice processing chip (15) is arranged at a left position of the microphone array (16), and an audio power amplifier (17) is arranged below the voice processing chip (15).

4. A digital shower system as claimed in claim 3, wherein: A mixing valve driver (20) is arranged at a middle position of the temperature control module (18), a water pressure sensor (19) is arranged at a right position of the mixing valve driver (20), and a temperature sensor (21) is arranged at a left position of the mixing valve driver (20).

5. A digital shower system as claimed in claim 3, wherein: The voice processing chip (15) uses spectral subtraction for noise suppression, uses a DTW dynamic time warping algorithm, uses 13-dimensional MFCC coefficients, and matches the cosine similarity of the user's identity to be greater than 0.

8.

6. A digital shower system as claimed in claim 4, wherein: The temperature sensor (21) has three paths, and the data of the temperature sensor (21) are T1, T2, and T3, respectively; the weighted average temperature T_avg is 0.5*T1+0.3*T2+0.2*T3; the dynamic compensation calculation ΔP is current water pressure - reference water pressure, T_comp is 0.15*ΔP+0.02*(dΔP / dt), the PWM output is Kp*e(t)+Ki*∫e(t)dt+Kd*de(t) / dt, and Kp / Ki / Kd are dynamically adjusted according to the preset temperature.

7. A digital shower system as claimed in claim 1, wherein: Cold and hot water valves are arranged at an inner position of the mixing valve (8), the hot water valve opening degree is PWM_heat*(1+T_comp), and the cold water valve opening degree is PWM_cold*(1-T_comp).

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