Control system for air purification and disinfection

Abstract

The utility model discloses a control system for air purification and disinfection. The control system comprises a first control unit, a communication module, a sensor assembly, a power supply protection module and a filtering module, the first control unit is electrically connected with the air purification and disinfection equipment; the communication module is electrically connected with the first control unit; the sensor assembly comprises a temperature sensor and a smoke sensor and is connected with the first control unit through the communication module. The power supply protection module is electrically connected with the first control unit; the filtering module comprises a rectifying unit, a filtering unit and a voltage stabilizing unit, the rectifying unit is connected with the power protection module, and the voltage stabilizing unit is connected with the first control unit. According to the system, physical separation of power protection and a main control unit is achieved through modular design, stable power supply is achieved through an independent filtering module, remote unified management is achieved by means of the communication module expansion equipment connection capacity, and a hardware architecture capable of being detachably maintained is provided for air purification and disinfection equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to power control technical field, concretely relates to a control system for air purification and disinfection. BACKGROUND

[0002] The existing air purification and disinfection equipment generally adopts power control unit and host integration design, and the power module is directly fixed in the equipment and coupled with the main control system. In this architecture, the filter circuit of the power control module and the main control chip share the power supply line, which causes the circuit stability to be easily disturbed by the host operation, and when the equipment has a power failure, it needs to be disassembled and maintained as a whole, affecting the continuous operation efficiency of the equipment. In addition, the existing equipment mostly adopts local single control mode, lacks general communication interface support, and different types of equipment are difficult to access to a unified management platform. SUMMARY

[0003] In view of the above problems, the utility model provides a control system for air purification and disinfection, which solves the problems of difficult maintenance and remote unified management caused by the integration of power control and host of the existing equipment.

[0004] To achieve the above purpose, the application provides a control system for air purification and disinfection, which is suitable for air purification and disinfection equipment, comprising a first control unit, a communication module, a sensor assembly, a power protection module and a filter module, the first control unit is configured as an STM32 chip or an ESP32 chip, and the first control unit is electrically connected with the air purification and disinfection equipment; the communication module is electrically connected with the first control unit; the sensor assembly is electrically connected with the first control unit through the communication module, and the sensor assembly comprises a temperature sensor and a smoke sensor; the power protection module is electrically connected with the first control unit; the filter module comprises a rectifier unit, a filter unit and a voltage stabilizing unit connected in sequence, the rectifier unit is electrically connected with the power protection module, and the voltage stabilizing unit is electrically connected with the first control unit.

[0005] In some embodiments, the control system further comprises a second control unit, the second control unit is electrically connected with the first control unit through the communication module, and the second control unit is in communication connection with a preset terminal.

[0006] In some embodiments, the communication module is configured as at least one of Wi-Fi communication mode, 4G / 5G communication mode, LoRa communication mode and Zigbee communication mode.

[0007] In some embodiments, the control system further comprises a relay module, the relay module is arranged between the first control unit and the air purification and disinfection equipment.

[0008] In some embodiments, the first control unit further comprises a PWM control circuit, and the PWM control circuit is electrically connected between the first control unit and the air purification and disinfection equipment.

[0009] In some embodiments, the sensor assembly further comprises an overcurrent detection circuit, which is electrically connected with the communication module.

[0010] In some embodiments, the sensor assembly further comprises an ADC conversion circuit, which is electrically connected with the temperature sensor and the smoke sensor.

[0011] In some embodiments, the power protection module is configured to be generated by a TVS diode and a fuse welding.

[0012] In some embodiments, the rectifying unit is a rectifier bridge, the filtering unit is a filter capacitor, and the voltage stabilizing unit is a voltage stabilizer.

[0013] In some embodiments, the input voltage of the power protection module is 220V.

[0014] Compared with the prior art, the above technical scheme provides a control system for air purification and disinfection, which comprises a first control unit, a communication module, a sensor assembly, a power protection module, and a filtering module. The first control unit is electrically connected with an air purification and disinfection device; the communication module is electrically connected with the first control unit; the sensor assembly comprises a temperature sensor and a smoke sensor, and is connected with the first control unit through the communication module; the power protection module is electrically connected with the first control unit; and the filtering module comprises a rectifying unit, a filtering unit, and a voltage stabilizing unit, the rectifying unit is connected with the power protection module, and the voltage stabilizing unit is connected with the first control unit. The system realizes physical separation of power protection and the main control unit through modular design, stabilizes power supply by using an independent filtering module, realizes remote unified management by expanding device connection capacity with the help of the communication module, and provides a detachable maintenance hardware architecture for the air purification and disinfection device.

[0015] The above content related to the utility model is only a summary of the technical scheme of the utility model, in order to enable those skilled in the art to more clearly understand the technical scheme of the utility model, and then can be implemented according to the content recorded in the specification and the drawings, and in order to enable the above-mentioned purpose and other purposes, characteristics and advantages of the utility model to be more easily understood, the following is described in combination with the specific embodiments of the utility model and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings are only used to show the principles, implementation manners, applications, characteristics and effects of the specific embodiments of the utility model and other related contents, and cannot be considered as a limitation of the utility model.

[0017] In the drawings of the specification:

[0018] Figure 1 The first structural schematic diagram of the control system described in the specific embodiments is shown in the drawings.

[0019] Figure 2 The first structure diagram of the first control unit according to the embodiment;

[0020] Figure 3 The second structure diagram of the control system according to the embodiment;

[0021] Figure 4 The second structure diagram of the first control unit according to the embodiment;

[0022] Figure 5 The third structure diagram of the control system according to the embodiment.

[0023] The reference signs involved in the above-mentioned drawings are explained as follows:

[0024] 1. Control system;

[0025] 2. First control unit;

[0026] 3. Communication module;

[0027] 4. Sensor assembly;

[0028] 5. Power protection module;

[0029] 6. Filtering module;

[0030] 61. Rectifying unit;

[0031] 62. Filtering unit;

[0032] 63. Voltage stabilizing unit;

[0033] 7. Air purification and disinfection equipment;

[0034] 8. Second control unit;

[0035] 9. Relay module. EMBODIMENT

[0036] In order to describe possible application scenarios, technical principles, specific embodiments that can be implemented, purposes and effects that can be achieved, etc. of the present application, the following will be described in detail in combination with the specific embodiments listed and with the aid of the drawings. The embodiments recorded in this paper are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0037] The term "embodiment" mentioned in this document means that the specific features, structures or properties described in connection with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0038] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0039] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this document generally represents a "or" logical relationship between the associated objects before and after.

[0040] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary or secondary, or order relationship between the entities or operations.

[0041] Without more limitations, in the present application, the use of "include", "contain", "have" or other similar expressions in the sentence is intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0042] As understood in the "Guidelines for Examination", in the present application, "greater than", "less than", "exceed" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise specifically limited.

[0043] In the description of the embodiments of the utility model, the space-related expressions used, such as 'center', 'longitudinal', 'transverse', 'length', 'width', 'thickness', 'upper', 'lower', 'front','rear', 'left', 'right','vertical', 'horizontal', 'perpendicular', 'top', 'bottom', 'inner', 'outer', 'clockwise', 'counterclockwise', 'axial', 'radial', 'circumferential', etc., indicate the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the utility model or for the reader to understand, and do not indicate or imply that the indicated device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, so it cannot be understood as a limitation on the embodiments of the utility model.

[0044] Unless otherwise explicitly specified or limited, in the description of the embodiments of the utility model, the terms such as'mounting', 'connection', 'connection', 'fixing','setting', etc., should be understood broadly. For example, the 'connection' can be fixed connection, or detachable connection, or integrated setting; it can be mechanical connection, or electrical connection, or communication connection; it can be direct connection, or indirect connection through intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For the skilled in the art to which the utility model belongs, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0045] Please refer to Figures 1 to 5 The embodiment provides a kind of control system for air purification and disinfection, applicable to air purification and disinfection equipment 7, including first control unit 2, communication module 3, sensor component 4, power protection module 5 and filter module 6, first control unit 2 is configured as STM32 chip or ESP32 chip, first control unit 2 is electrically connected with air purification and disinfection equipment 7;Communication module 3 is electrically connected with first control unit 2;Sensor component 4 is electrically connected with first control unit 2 by communication module 3, and sensor component 4 includes temperature sensor, smoke sensor;Power protection module 5 is electrically connected with first control unit 2;Filter module 6 includes rectifier unit 61, filter unit 62 and voltage stabilizing unit 63 connected in sequence, rectifier unit 61 is electrically connected with power protection module 5, and voltage stabilizing unit 63 is electrically connected with first control unit 2.

[0046] In the embodiment, first control unit 2 uses STM32 or ESP32 chip as core processing unit, both are integrated microcontroller architecture semiconductor chips, and electrical interconnection is realized with air purification and disinfection equipment 7 by PCB circuit board.

[0047] The communication module 3 can be an integrated circuit with wireless radio frequency function, such as a Wi-Fi or Bluetooth communication module, and its metal shielding shell can reduce electromagnetic interference and be used to establish a data transmission channel between devices.

[0048] The temperature sensor in the sensor assembly 4 is a thermistor type device, and the smoke sensor uses a photoelectric detection structure. Both of them realize signal interaction through the GPIO pin built in the communication module 3.

[0049] Optionally, the power protection module 5 includes an overvoltage protection circuit and a surge absorbing element, and uses a combination of ceramic packaged diodes and voltage-dependent resistors to block abnormal voltage impact on the main control unit.

[0050] Preferably, in the filtering module 6, the rectification unit 61 is composed of a bridge rectification circuit, which converts alternating current into pulsating direct current through silicon-based diodes; the filtering unit 62 uses an LC passive filtering structure composed of a toroidal magnetic core inductor and an electrolytic capacitor in parallel, which is used to eliminate high-frequency noise; the voltage stabilizing unit 63 is configured with a three-terminal voltage stabilizing chip, which enhances the thermal stability through aluminum heat sinks, and outputs smooth direct current to the first control unit 2.

[0051] This embodiment realizes system function decoupling through modular hardware architecture, and the physical separation design of the power protection module 5 and the filtering module 6 reduces the risk of the main control circuit being disturbed by power fluctuations, and the three-stage rectification-filtering-voltage stabilization ensures the stability of the power supply path. The communication module 3 supports multi-protocol expansion capability, providing a hardware foundation for the unified access of different models of devices. The sensor assembly 4 realizes environmental parameter acquisition through an independent communication interface, avoiding crosstalk caused by the coexistence of signal lines and power lines. The control system 1 uses a pluggable interface design, each module is independently powered, and the device does not need to be disassembled as a whole during maintenance, improving the operation and maintenance efficiency while maintaining the basic control function of the air purification and disinfection device 7.

[0052] In some embodiments, the control system 1 further comprises a second control unit 8, which is electrically connected to the first control unit 2 through the communication module 3, and the second control unit 8 is in communication connection with a preset terminal.

[0053] In this embodiment, the second control unit 8 uses an STM32 chip or an ESP32 chip, and realizes data interaction with the first control unit 2 through the RS485 bus or the wireless radio frequency interface of the communication module 3, and its metal packaging shell improves the anti-interference capability. The preset terminal is a mobile device or a server platform, and a remote instruction transmission link is established through the TCP / IP protocol stack of the communication module 3.

[0054] The communication module 3 of the embodiment supports multi-protocol interface expansion, the second control unit 8 realizes the physically isolated interaction between the terminal device and the control system 1 through the communication module 3, realizes the remote unified management of the control system 1 to the first control unit 2 and the second control unit 8, enhances the system fault tolerance while maintaining the basic management and control of the purification equipment.

[0055] In some embodiments, the communication module 3 is configured as at least one of a Wi-Fi communication mode, a 4G / 5G communication mode, a LoRa communication mode, and a Zigbee communication mode.

[0056] In the embodiment, the Wi-Fi communication mode is configured with a 2.4GHz / 5GHz dual-band ceramic substrate antenna; the 4G / 5G communication mode integrates a micro SIM card slot and a multi-band power amplifier chip; the LoRa communication mode selects a spread spectrum modulation chip and carries a spiral metal antenna; and the Zigbee communication mode is built-in with a Mesh networking protocol stack chip and connected to the mainboard through a gold-plated contact.

[0057] The embodiment realizes scene adaptive deployment through a multi-mode communication architecture, expands the coverage range through the combination of different frequency bands and protocols, improves the signal penetration capability, maintains stable communication links between devices in a complex electromagnetic environment, and provides a flexible access scheme for remote management and control. In addition, the communication module 3 has an encrypted transmission function to ensure data security.

[0058] In some embodiments, the control system 1 further comprises a relay module 9, which is arranged between the first control unit 2 and the air purification and disinfection equipment 7.

[0059] In the embodiment, the relay module 9 can adopt a magnetic latching relay or a solid-state relay structure, the magnetic latching type is configured with a double-coil magnetic circuit and a neodymium-iron-boron permanent magnet, and the solid-state type is built-in with an optical coupling isolation and a thyristor component. The contact module adopts silver-nickel alloy material, and the high and low voltage circuits are packaged and isolated on a ceramic substrate, and are directly connected to the signal pins of the main control unit through the pin interface.

[0060] The embodiment builds an electrical isolation barrier through the relay module 9 to avoid the instantaneous impact of high-voltage loads on the control circuit, the magnetic latching structure reduces standby power consumption, the ceramic packaging enhances the arc resistance performance, and realizes the safe transmission and precise control of the start and stop instructions of the purification equipment.

[0061] In some embodiments, the first control unit 2 further comprises a PWM control circuit, which is electrically connected between the PWM control circuit and the air purification and disinfection equipment 7.

[0062] In this embodiment, the PWM control circuit is used to adjust the power output of the air purification and disinfection machine. The PWM control circuit is composed of an MOSFET / IGBT power switch array, uses a high-frequency ceramic substrate to carry a gate drive chip and a resistance-capacitance filter network. The power output end uses a thickened copper foil wiring layout, cooperates with an aluminum heat sink and a heat-conducting silicone pad layer, and is connected to the power interface of the equipment through a multi-core shielded wire.

[0063] In this embodiment, stepless power regulation is realized through pulse width modulation, high-frequency switching characteristics reduce harmonic loss, and the ceramic substrate and copper foil structure improve current carrying stability, ensuring the dynamic response accuracy and energy efficiency balance of the disinfection equipment under different working conditions.

[0064] In some embodiments, the sensor assembly 4 further includes an overcurrent detection circuit electrically connected with the communication module 3.

[0065] In this embodiment, the overcurrent detection circuit monitors the current change of the air purification and disinfection equipment 7 in real time, and combines the instant data transmission function of the communication module 3 to trigger a remote alarm and protection instruction when an abnormal current occurs, avoiding permanent damage to the equipment due to overload or short circuit failure, while optimizing system operation stability and fault response efficiency.

[0066] In some embodiments, the sensor assembly 4 further includes an ADC conversion circuit electrically connected with the temperature sensor and the smoke sensor.

[0067] In this embodiment, accurate current and voltage detection is realized through the ADC conversion circuit. Optionally, the ADC conversion circuit adopts a multi-channel sigma-delta modulator architecture, with a built-in CMOS process low-noise reference source and a programmable gain amplifier.

[0068] In this embodiment, high-precision analog-to-digital conversion is used to realize synchronous quantization of multiple types of sensor signals, reduce the influence of environmental interference on detection accuracy, improve the recognition response speed of abnormal working conditions, and ensure the reliability and control decision accuracy of the air purification equipment monitoring system.

[0069] In some embodiments, the power protection module 5 is configured to be generated by a TVS diode and a fuse welding.

[0070] In this embodiment, a double protection mechanism is constructed through the synergistic effect of the TVS diode and the fast-fusing ceramic fuse. The TVS diode suppresses voltage surge peaks in real time, and the fuse quickly blocks continuous overload current, forming a gradient protection of transient overvoltage and steady overcurrent, effectively preventing the breakdown or overheating damage of power circuit components, and enhancing the reliability and response coordination of electrical safety protection of the equipment.

[0071] In some embodiments, the rectifying unit 61 is a rectifier bridge, the filtering unit 62 is a filter capacitor, and the voltage stabilizing unit 63 is a voltage stabilizer.

[0072] In the embodiment, through the hierarchical architecture of the rectifier bridge, the electrolytic filter capacitor, and the low dropout linear voltage stabilizer, unidirectional conversion of alternating current signals, high-frequency ripple suppression, and constant voltage output under dynamic load are respectively realized, a multi-stage power supply noise attenuation and energy buffer mechanism is formed, the influence of input fluctuation on the rear-end circuit is reduced, voltage distortion or transient impact leading to abnormal device function is prevented, and continuous and stable operation of the system is ensured.

[0073] In some embodiments, the input voltage of the power supply protection module 5 is 220V.

[0074] In the embodiment, the protection mechanism is designed for 220V alternating current input characteristics, the voltage peak and abnormal current disturbance caused by power grid fluctuation are effectively suppressed through the synergistic effect of transient surge absorption and overcurrent fusing, a hierarchical energy dissipation path is constructed, thermal failure or insulation breakdown of components caused by high voltage impact is avoided, and the long-term stability and electrical safety of the device in complex mains environment are ensured.

[0075] By adopting the above technical scheme, the utility model is distinguished from the prior art and has the following beneficial effects:

[0076] The utility model realizes function decoupling through modular hardware architecture, adopts STM32 or ESP32 chip as the core processing unit, establishes flexible device connection link in combination with the communication module 3, and ensures data security through the encrypted transmission function. The power supply protection module 5 constructs a two-stage gradient protection mechanism through a TVS diode and a fast-fusing ceramic fuse, the filtering module 6 adopts a three-stage architecture of a rectifier bridge, a filter capacitor and a voltage stabilizer to suppress power supply noise, and forms a multi-stage energy buffer. The sensor assembly 4 integrates a temperature sensor and a smoke sensor, reduces signal crosstalk through an independent communication interface and a high-precision ADC conversion circuit, and improves the reliability of environmental parameter acquisition. The relay module 9 realizes high-low voltage circuit isolation through a magnetic retention or solid-state structure, and a ceramic substrate package enhances arc resistance. The PWM control circuit optimizes power regulation based on the high-frequency switching characteristics of the MOSFET / IGBT array, cooperates with copper foil wiring and a heat dissipation structure to improve current carrying stability. For 220V input characteristics, transient surge absorption and overcurrent fusing are used to suppress power grid fluctuation and construct a hierarchical energy dissipation path. The plug-in interface design and module independent power supply simplify the maintenance process, ensure the basic control function of the air purification and disinfection device 7, and enhance the long-term operation stability and electrical safety of the system in complex electromagnetic and mains environment through the multi-stage protection mechanism and hardware isolation strategy.

[0077] Finally, it needs to be explained that although the above-mentioned embodiments have been described in the description and drawings of the utility model, the patent protection scope of the utility model cannot be limited. Any equivalent structure or equivalent process substitution or modification based on the essential concept of the utility model, using the content recorded in the description and drawings of the utility model, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc. are included in the patent protection scope of the utility model.

Claims

1. A control system for air purification and disinfection, characterized in that, Suitable for air purification and disinfection equipment, including: The first control unit is configured as an STM32 chip or an ESP32 chip, and the first control unit is electrically connected to the air purification and disinfection equipment. The communication module is electrically connected to the first control unit; A sensor assembly is electrically connected to the first control unit via the communication module, and the sensor assembly includes a temperature sensor and a smoke sensor. The power protection module is electrically connected to the first control unit; The filtering module includes a rectifier unit, a filter unit, and a voltage regulator unit connected in sequence. The rectifier unit is electrically connected to the power protection module, and the voltage regulator unit is electrically connected to the first control unit.

2. The air purification and disinfection control system according to claim 1, characterized in that, Also includes: The second control unit is electrically connected to the first control unit via a communication module, and the second control unit is communicatively connected to a preset terminal.

3. The air purification and disinfection control system according to claim 1, characterized in that, The communication module is configured to at least one of Wi-Fi communication mode, 4G / 5G communication mode, LoRa communication mode, and Zigbee communication mode.

4. The air purification and disinfection control system according to claim 1, characterized in that, Also includes: A relay module is installed between the first control unit and the air purification and disinfection equipment.

5. The air purification and disinfection control system according to claim 1, characterized in that, The first control unit further includes a PWM control circuit, which is electrically connected to the air purification and disinfection equipment.

6. The air purification and disinfection control system according to claim 1, characterized in that, The sensor assembly also includes: An overcurrent detection circuit is electrically connected to the communication module.

7. The air purification and disinfection control system according to claim 1, characterized in that, The sensor assembly also includes: The ADC conversion circuit is electrically connected to the temperature sensor and the smoke sensor.

8. The air purification and disinfection control system according to claim 1, characterized in that, The power protection module is configured to be formed by soldering TVS diodes and fuses.

9. The air purification and disinfection control system according to claim 1, characterized in that, The rectifier unit is a rectifier bridge, the filter unit is a filter capacitor, and the voltage regulator unit is a voltage regulator.

10. The air purification and disinfection control system according to claim 1, characterized in that, The input voltage of the power protection module is 220V.

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