Power conversion and environment sensing equipment and upper computer thereof

Abstract

The invention provides a power conversion and energy combination environment sensing device which is characterized in that the power conversion and energy combination environment sensing device comprises a power conversion circuit and an environment sensing circuit, the power conversion circuit is used for converting input mains supply into stable multi-path direct current to be output, and the environment sensing circuit is used for outputting the stable multi-path direct current. The environment sensing circuit is used for detecting environment abnormity in the equipment; and the stability of the output voltage is ensured through accurate control and a feedback mechanism. And through the environment sensing circuit, abnormal conditions such as door magnetism and water immersion can be detected in time, and the safety of the equipment is enhanced. On the other hand, the invention provides an upper computer which can control the on-off of the multi-path DC / DC conversion circuit in the power supply conversion and environment sensing equipment, the design of the upper computer enables a user to remotely control and monitor the power supply conversion and environment sensing equipment, and the convenience of operation and the intelligent level of the system are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power electronics, and in particular relates to a power conversion and environment sensing device and a host computer thereof. Background Art

[0002] In the existing technology, for loads with multiple different voltage requirements, the existing power conversion circuit can basically only output one voltage. Although some circuits can output multiple voltages, the multiple voltages are output simultaneously, and the output port cannot be turned on and off according to demand, which is very inconvenient to use.

[0003] For example, in the prior art, a patent document with application number 202221140948.3 provides an intelligent voltage-dividing power supply, including a filtering circuit, a rectifying circuit, a multi-channel PWM control circuit and a multi-channel step-down circuit. The input end of the filtering circuit inputs AC220V voltage, and the output end is connected to the input end of the rectifying circuit. The output end of the rectifying circuit is respectively connected to the input end of each step-down circuit, and each step-down circuit outputs a corresponding voltage respectively. The input end of each PWM control circuit is connected to a host computer, and the output end is respectively connected to the input end of the corresponding step-down circuit.

[0004] Although the above-mentioned intelligent voltage-dividing power supply has solved the problem of voltage output diversity to a certain extent, it still has some limitations. However, the output voltage of the above-mentioned application lacks a feedback adjustment mechanism and cannot guarantee the stability of the output voltage. In addition, the intelligent voltage-dividing power supply cannot perceive changes in the external environment in real time. When the device chassis is flooded or the chassis is damaged, it cannot generate an alarm, and the safety is low. In addition, the system lacks effective interaction with the host computer and cannot achieve remote monitoring and control, which is very important in modern smart grid and Internet of Things applications. Summary of the invention

[0005] In view of the above problems, the present invention proposes a new type of power conversion and environmental perception device and its host computer. The device can not only output a variety of different levels of voltage according to load requirements, but also has environmental perception capabilities, can monitor environmental changes in real time, and control power output according to environmental conditions to avoid danger. In the present invention, the environmental perception circuit can detect environmental abnormal signals such as door magnets and water immersion, and after processing by a single-chip microcomputer, control the power output, thereby protecting the device from environmental factors. In addition, the power detection circuit can monitor the power consumption parameters of the mains in real time, providing users with convenient power management.

[0006] The technical solution of the present application is, on the one hand, to provide a power conversion and environment sensing device, characterized in that the power conversion and environment sensing device comprises a power conversion circuit and an environment sensing circuit, the power conversion circuit is used to convert the input mains power into a stable multi-channel direct current output, and the environment sensing circuit is used to detect environmental anomalies in the device;

[0007] The power conversion circuit includes a rectifier and filter circuit, a multi-channel DC / DC conversion circuit and a corresponding feedback voltage stabilization circuit. The rectifier and filter circuits are respectively connected to the multi-channel DC / DC conversion circuits for converting alternating current into direct current; the multi-channel DC / DC conversion circuits are respectively connected to the corresponding feedback voltage stabilization circuits for converting the direct current output by the rectifier and filter circuits into direct current outputs of different voltage levels; the corresponding feedback voltage stabilization circuit is used to ensure the stability of the output voltage in the event of voltage fluctuations.

[0008] Furthermore, the corresponding feedback voltage stabilization circuit includes a first resistor, a second resistor, a first capacitor, a first controllable voltage stabilizing diode, a third resistor, a fourth resistor and an optocoupler, wherein the first resistor, the second resistor, the first capacitor, the first controllable voltage stabilizing diode, the third resistor, the fourth resistor and the optocoupler, the first ends of the first resistor and the second resistor are respectively connected to the output end of the multi-channel DC / DC conversion circuit, and the second ends of the first resistor and the second resistor are respectively connected to the first end of the first capacitor and the reference level of the first controllable voltage stabilizing diode to form a voltage divider network for detecting the output voltage and providing a feedback signal; the other end of the first capacitor The first controllable Zener diode is connected to the cathode of the first Zener diode, the anode of the first controllable Zener diode is connected to the output end of the multi-channel DC / DC conversion circuit, and the first controllable Zener diode is used to set the reference voltage of the feedback circuit; the first ends of the third resistor and the fourth resistor are both connected to the cathode of the first controllable Zener diode, and the second ends of the third resistor and the fourth resistor are respectively connected to the two input ends of the optocoupler, for receiving feedback signals from the first resistor and the second resistor, and converting them into input currents of the optocoupler; the output end of the optocoupler is connected to the control circuit of the multi-channel DC / DC conversion circuit, for adjusting the output voltage according to the input current.

[0009] Furthermore, the multi-channel DC / DC conversion circuit includes a control circuit, which includes a power management chip and a MOS tube. The power management chip controls the switch of the MOS tube by emitting a PWM wave to adjust the output voltage of the multi-channel DC / DC conversion circuit.

[0010] Furthermore, the power management chip is of model LD7575, the RT pin of the power management chip is grounded, the gate of the MOS tube is connected to the PWM output pin of the power management chip, the source of the MOS tube is connected to the ground, the drain of the MOS tube is connected to the output end of the rectifier and filter circuit, the VDD pin of the power management chip is connected to the output end of the rectifier and filter circuit to provide an operating voltage, the feedback pin FB of the power management chip is connected to the output end of the multi-channel DC / DC conversion circuit, and is used to detect the output voltage and feed it back to the power management chip to realize closed-loop control, and the GND pin of the power management chip is connected to the ground.

[0011] Furthermore, the multi-channel DC / DC conversion circuit includes a peak absorption circuit, which includes a fifth resistor, a sixth resistor, a first capacitor, and a first diode connected in parallel. The fifth resistor, the sixth resistor, and the first capacitor are connected in parallel to each other and then in series with the first diode. The peak absorption circuit is respectively connected to the output end of the rectifier and filter circuit to suppress the voltage spike generated during the voltage conversion process.

[0012] Furthermore, the power conversion and environment perception device also includes an environment perception circuit, which includes a door magnetic circuit and a water immersion circuit. The door magnetic circuit and the water immersion circuit include a sensing port, a seventh resistor, an eighth resistor, a ninth resistor, a first optocoupler, a transistor and a second optocoupler. The sensing port is used to receive external environmental signals, and the two ends of the seventh resistor are respectively connected to the sensing port and the input end of the first optocoupler, so as to adjust the level of the sensing signal; the output end of the first optocoupler is connected to the single-chip microcomputer, and the base of the transistor is connected to the sensing port, so as to convert the sensing signal into a signal that can be processed by the transistor; the collector of the transistor is connected to the input end of the second optocoupler, and the emitter is grounded, so as to amplify the sensing signal; the output end of the second optocoupler is connected to the single-chip microcomputer, so as to output an environmental abnormality signal.

[0013] Furthermore, the power conversion and environmental perception device also includes an electric energy detection circuit, which is connected to the rectifier and filter circuit and is used to detect the electric energy consumption parameters of the input AC power. The electric energy detection circuit includes an electric energy detection chip, and pins 6 and 7 of the electric energy detection chip are respectively connected to the live wire and the neutral wire of the AC power input. The electric energy detection chip is connected to the single-chip microcomputer and is used to transmit the measured electric energy parameters to the single-chip microcomputer for processing and display.

[0014] On the other hand, another aspect of the present application provides a host computer, which can control the power conversion and the on and off of the multi-channel DC / DC conversion circuit in the environmental sensing device. The host computer includes a single-chip microcomputer and an on-off control circuit connected to the single-chip microcomputer. The on-off control circuit includes a third optocoupler and a protection resistor. The input end of the optocoupler is connected to the output end of the single-chip microcomputer, and the protection resistor is connected between the output end of the optocoupler and the control end of the multi-channel DC / DC conversion circuit, which is used to isolate the control signal and protect the multi-channel DC / DC conversion circuit.

[0015] Furthermore, the host computer also includes a communication circuit, and the communication circuit adopts an MDT10P53 chip.

[0016] Furthermore, the host computer further includes a display module and an input module, wherein the display module is used to display the working status of the power conversion and environment perception device, and the input module is used to receive user instructions and transmit them to the single-chip microcomputer to achieve remote control of the power conversion and environment perception device. The host computer also has a data communication interface, which is connected to the single-chip microcomputer and is used to achieve data exchange with external devices, thereby achieving remote monitoring and management of the power conversion and environment perception device.

[0017] The beneficial technical effects of this application are:

[0018] The stability of the output voltage is ensured through precise control and feedback mechanisms. The environmental sensing circuit can detect abnormal conditions such as door magnetism and water immersion in a timely manner, enhancing the safety of the equipment. The introduction of the power detection circuit enables users to monitor and manage power consumption in real time, which helps to save energy and reduce emissions. The design of the host computer enables users to remotely control and monitor power conversion and environmental sensing equipment, improving the convenience of operation and the intelligence level of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : Schematic diagram of the power conversion and environment sensing device of the present application;

[0020] Figure 2 : Schematic diagram of the power conversion circuit of the power conversion and environment sensing device of the present application;

[0021] Figure 3 : Schematic diagram of the feedback voltage stabilization circuit of the power conversion and environment sensing device of the present application;

[0022] Figure 4 : A schematic diagram of a control circuit of a DC / DC conversion circuit of a power conversion and environment sensing device of the present application;

[0023] Figure 5: Schematic diagram of the environmental sensing circuit of the power conversion and environmental sensing device of the present application;

[0024] Figure 6 : Schematic diagram of the on-off control of the output voltage port of the upper computer of the power conversion and environment perception device of the present application; DETAILED DESCRIPTION

[0025] The following examples further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and substance of the present invention, modifications or substitutions made to the methods, steps or conditions of the present invention all fall within the scope of the present invention.

[0026] In some embodiments, Figure 1 As shown, the present application is a power conversion and environment sensing device, which includes a power conversion circuit and an environment sensing circuit. The power conversion circuit is used to convert the input AC power into a stable multi-channel DC output, and the environment sensing circuit is used to detect environmental anomalies in the device;

[0027] In some embodiments, specifically, Figure 2 As shown, taking three-way voltage output as an example, the power conversion circuit includes a rectifier filter circuit, a first DC / DC conversion circuit, a second DC / DC conversion circuit and a third DC / DC conversion circuit and corresponding first feedback voltage stabilization circuits, second feedback voltage stabilization circuits and third feedback voltage stabilization circuits. The rectifier filter circuit is responsible for converting the AC power output from the mains into DC power and performing preliminary filtering processing to reduce the interference of subsequent circuits. The first DC / DC conversion circuit, the second DC / DC conversion circuit and the third DC / DC conversion circuit convert the rectified and filtered DC power into a first voltage, a second voltage and a third voltage respectively, which can be adjusted according to the voltage requirements of different devices to meet the power supply standards of different devices. The first feedback voltage stabilization circuit, the second feedback voltage stabilization circuit and the third feedback voltage stabilization circuit work in conjunction with their respective DC / DC conversion circuits to ensure the stability and accuracy of the output voltage. Through the coordinated work of these circuits, the power conversion and environmental sensing device can provide stable and reliable power for a variety of devices.

[0028] In some embodiments, specifically, Figure 3As shown, the corresponding feedback voltage stabilizing circuit includes a first resistor R17, a second resistor R16, a first capacitor C3, a first controllable voltage stabilizing diode Q3, a third resistor R13, a fourth resistor R14 and an optical coupler U2, wherein the first resistor R17, the second resistor R16, the first capacitor C3, the first controllable voltage stabilizing diode Q3, the third resistor R13, the fourth resistor R14 and the optical coupler U2, the first ends of the first resistor R17 and the second resistor R16 are respectively connected to the output end of the multi-channel DC / DC conversion circuit, and the second ends of the first resistor R17 and the second resistor R16 are respectively connected to the first end of the first capacitor C3 and the reference level of the first controllable voltage stabilizing diode Q3 to form a voltage divider network for detecting the output voltage and providing a feedback signal; The other end of the first capacitor C3 is connected to the cathode of the first controllable voltage-stabilizing diode Q3, the anode of the first controllable voltage-stabilizing diode Q3 is connected to the output end of the multi-channel DC / DC conversion circuit, and the first controllable voltage-stabilizing diode Q3 is used to set the reference voltage of the feedback circuit; the first ends of the third resistor R13 and the fourth resistor R14 are both connected to the cathode of the first controllable voltage-stabilizing diode Q3, and the second ends of the third resistor R13 and the fourth resistor R14 are respectively connected to the two input ends of the optocoupler U2, for receiving feedback signals from the first resistor R17 and the second resistor R16, and converting them into the input current of the optocoupler U2; the output end of the optocoupler U2 is connected to the control circuit of the multi-channel DC / DC conversion circuit, for adjusting the output voltage according to the input current.

[0029] The principle of the above-mentioned feedback voltage stabilization circuit is to achieve precise control of the output voltage of the multi-channel DC / DC conversion circuit through the output current change of the optocoupler U2. When the output voltage deviates from the set value, the voltage change detected by the voltage divider network will be transmitted to the first controllable voltage regulator diode Q3 through the first resistor R17 and the second resistor R16, thereby changing its reference voltage. This change will be transmitted to the optocoupler U2 through the third resistor R13 and the fourth resistor R14, causing the input current of the optocoupler U2 to change. The optocoupler U2 acts as an isolation element to convert the voltage change into a current signal, and then transmits this signal to the control circuit of the multi-channel DC / DC conversion circuit. The control circuit adjusts its output according to the received current signal to stabilize the voltage and ensure that the output voltage of the power conversion device remains within the set range.

[0030] In some embodiments, Figure 4As shown, the multi-channel DC / DC conversion circuit includes a control circuit, and the control circuit includes a power management chip U1 and a MOS tube Q1. The power management chip U1 sends a PWM wave through the 5 pin to control the switch of the MOS tube Q1 to adjust the output voltage of the DC / DC conversion circuit. In this embodiment, the power management chip is LD7575 model, the RT pin of U1 of the power management chip is grounded through a resistor R3, and the gate of the MOS tube is connected to the PWM output pin of the power management chip through two paths, the first path is a resistor R7 and a diode D4 connected in series with the resistor R7, and the second path is a resistor R8. The source of the MOS tube is connected to the ground through a resistor R6, and the drain of the MOS tube is connected to the output end of the rectifier and filter circuit. The VDD pin of the power management chip is connected to the output end of the rectifier and filter circuit to provide a working voltage. The feedback pin FB of the power management chip is connected to the output end of the multi-channel DC / DC conversion circuit, which is used to detect the output voltage and feed it back to the power management chip to realize closed-loop control, and the GND pin of the power management chip is connected to the ground.

[0031] The principle of the power management chip controlling the voltage is that the power management chip U1 generates a PWM waveform through an internal oscillator, and the duty cycle of the PWM waveform is determined by the voltage of the feedback pin FB. When the output voltage detected by the feedback pin FB is higher than the set value, the power management chip will automatically reduce the duty cycle of the PWM waveform, resulting in a reduction in the on-time of the MOS tube Q1, thereby reducing the output voltage. On the contrary, if the detected output voltage is lower than the set value, the power management chip will increase the duty cycle of the PWM waveform, increase the on-time of the MOS tube Q1, and increase the output voltage. Through this closed-loop control mechanism, the power management chip can maintain the stability of the output voltage, and ensure that the output voltage of the power conversion device remains within a preset stable range even when the load changes or the input voltage fluctuates.

[0032] In some embodiments, the multi-channel DC / DC conversion circuit includes a peak absorption circuit, which includes a fifth resistor, a sixth resistor, a first capacitor, and a first diode connected in parallel. The fifth resistor, the sixth resistor, and the first capacitor are connected in parallel to each other and then in series with the first diode. The peak absorption circuit is respectively connected to the output end of the rectifier and filter circuit to suppress the voltage spikes generated during the voltage conversion process.

[0033] In some embodiments, Figure 5As shown, the power conversion and environment sensing device also includes an environment sensing circuit, which includes a door magnetic circuit and a water immersion circuit. The door magnetic circuit and the water immersion circuit include a sensing port J5, a seventh resistor R2_7, an eighth resistor R2_12, a ninth resistor R2_9, a second optical coupler P7, a transistor Q8 and a third optical coupler P6. The sensing port J5 is used to receive external environmental signals and includes 4 pins. A 12V voltage is applied to the second pin and the low pin. If the device chassis is soaked in water and the device chassis door is opened, the two ends of the seventh resistor R2_7 are respectively connected to the fourth pin of the sensing port J5 and the input end of the second optical coupler P7; the output end of the second optical coupler P7 is connected to the single-chip microcomputer, and the base of the transistor Q8 is connected to the first pin of the sensing port J5; the collector of the transistor Q8 is connected to the input end of the third optical coupler P6, and the emitter is grounded; the output end of the third optical coupler P6 is connected to the single-chip microcomputer.

[0034] The principle of the above-mentioned environment sensing circuit to detect changes in the external environment is:

[0035] Pins 1 and 3 of the sensing port J5 are used to detect the door magnetic signal. When the device chassis door is opened, a voltage change occurs between pins 1 and 3 of the sensing port J5, and the change is transmitted to the second optocoupler P7 through the seventh resistor R2_7, thereby changing the conduction state of the second optocoupler P7. The output state change of the second optocoupler P7 is detected by the single-chip microcomputer, and the single-chip microcomputer determines whether the chassis door is opened based on this change. Similarly, when the device chassis is soaked in water, a voltage change occurs between pins 2 and 4 of the sensing port J5, and the change is directly transmitted to the base of the transistor Q8, causing the transistor Q8 to be turned on or off. The conduction state change of the transistor Q8 is transmitted to the single-chip microcomputer through the third optocoupler P6, and the single-chip microcomputer determines whether the chassis is soaked in water. In this way, the environmental sensing circuit can monitor the changes in the external environment in real time, and transmit these change information to the single-chip microcomputer for processing, thereby realizing real-time monitoring of the working environment of the power conversion equipment.

[0036] In some embodiments, the power conversion and environmental sensing device also includes an electric energy detection circuit, which is connected to the rectifier and filter circuit and is used to detect the electric energy consumption parameters of the input AC power. The electric energy detection circuit includes an electric energy detection chip, and pins 6 and 7 of the electric energy detection chip are respectively connected to the live wire and the neutral wire of the AC power input. The electric energy detection chip is connected to the single-chip microcomputer and is used to transmit the measured electric energy parameters to the single-chip microcomputer for processing and display.

[0037] In some embodiments, the on / off of the above-mentioned multiple output voltage ports can be controlled by a host computer. Figure 6For example, the host computer includes a single-chip microcomputer and an on-off control circuit connected to the single-chip microcomputer, and the on-off control circuit includes a third optocoupler PC817 and a protective resistor R34. The input end of the third optocoupler PC817 is connected to the OUT1 output end of the single-chip microcomputer through the protective resistor R34, and the output end is connected to the control pin of the multi-channel output voltage port. When the OUT1 output end of the single-chip microcomputer outputs a high level, the third optocoupler PC817 is turned on, so that the control pin of the multi-channel output voltage port obtains a low level signal, thereby realizing the on-off control of the multi-channel output voltage port. Conversely, when the OUT1 output end outputs a low level, the third optocoupler PC817 is cut off, and the control pin of the multi-channel output voltage port obtains a high level signal to maintain the normal working state of the multi-channel output voltage port. In this way, the host computer can remotely control the output voltage port of the power conversion device as needed to adapt to different working environments and requirements.

[0038] In some embodiments, the host computer communicates with the outside world through the MDT10P53 chip, which is a low-power microcontroller that supports multiple communication protocols, including UART, I2C, and SPI. In this embodiment, the MDT10P53 chip exchanges data with the outside world through the UART interface to achieve communication with the host computer.

[0039] In some embodiments, the host computer further includes a display module and an input module, wherein the display module is used to display the working status of the power conversion and environment perception device, and the input module is used to receive user instructions and pass them to the single-chip microcomputer to achieve remote control of the power conversion and environment perception device. The host computer also has a data communication interface, which is connected to the single-chip microcomputer and is used to achieve data exchange with external devices, thereby achieving remote monitoring and management of the power conversion and environment perception device.

[0040] Although the present invention has been described in detail above by general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A power conversion and environment sensing device, characterized in that: The power conversion and environment sensing device comprises a power conversion circuit and an environment sensing circuit, wherein the power conversion circuit is used to convert the input mains power into a stable multi-channel direct current output, and the environment sensing circuit is used to detect environmental anomalies in the device; The power conversion circuit includes a rectifier and filter circuit, a multi-channel DC / DC conversion circuit and a corresponding feedback voltage stabilization circuit. The rectifier and filter circuits are respectively connected to the multi-channel DC / DC conversion circuits for converting alternating current into direct current; the multi-channel DC / DC conversion circuits are respectively connected to the corresponding feedback voltage stabilization circuits for converting the direct current output by the rectifier and filter circuits into direct current outputs of different voltage levels; the corresponding feedback voltage stabilization circuit is used to ensure the stability of the output voltage in the event of voltage fluctuations.

2. The power conversion and environment sensing device according to claim 1, characterized in that: The corresponding feedback voltage stabilizing circuit includes a first resistor, a second resistor, a first capacitor, a first controllable voltage stabilizing diode, a third resistor, a fourth resistor and an optocoupler. The first resistor, the second resistor, the first capacitor, the first controllable voltage stabilizing diode, the third resistor, the fourth resistor and the optocoupler. The first ends of the first resistor and the second resistor are respectively connected to the output end of the multi-channel DC / DC conversion circuit, and the second ends of the first resistor and the second resistor are respectively connected to the first end of the first capacitor and the reference level of the first controllable voltage stabilizing diode to form a voltage divider network for detecting the output voltage and providing a feedback signal; the other end of the first capacitor is connected to the cathode of the first voltage stabilizing diode, the anode of the first controllable voltage stabilizing diode is connected to the output end of the multi-channel DC / DC conversion circuit, and the first controllable voltage stabilizing diode is used to set the reference voltage of the feedback circuit; the first ends of the third resistor and the fourth resistor are both connected to the cathode of the first controllable voltage stabilizing diode, and the second ends of the third resistor and the fourth resistor are respectively connected to the two input ends of the optocoupler for receiving the feedback signal from the first resistor and the second resistor and converting it into the input current of the optocoupler; the output end of the optocoupler is connected to the control circuit of the multi-channel DC / DC conversion circuit for adjusting the output voltage according to the input current.

3. The power conversion and environment sensing device according to claim 1, characterized in that: The multi-channel DC / DC conversion circuit includes a control circuit, which includes a power management chip and a MOS tube. The power management chip controls the switch of the MOS tube by sending a PWM wave to adjust the output voltage of the multi-channel DC / DC conversion circuit.

4. The power conversion and environment sensing device according to claim 3, characterized in that: The power management chip is of model LD7575, the RT pin of the power management chip is grounded, the gate of the MOS tube is connected to the PWM output pin of the power management chip, the source of the MOS tube is connected to the ground, the drain of the MOS tube is connected to the output end of the rectifier and filter circuit, the VDD pin of the power management chip is connected to the output end of the rectifier and filter circuit to provide an operating voltage, the feedback pin FB of the power management chip is connected to the output end of the multi-channel DC / DC conversion circuit, and is used to detect the output voltage and feed it back to the power management chip to realize closed-loop control, and the GND pin of the power management chip is connected to the ground.

5. The power conversion and environment sensing device according to claim 1, characterized in that: The multi-channel DC / DC conversion circuit includes a peak absorption circuit, which includes a fifth resistor, a sixth resistor, a first capacitor, and a first diode connected in parallel. The fifth resistor, the sixth resistor, and the first capacitor are connected in parallel to each other and then connected in series with the first diode. The peak absorption circuit is respectively connected to the output end of the rectifier and filter circuit to suppress the voltage spike generated during the voltage conversion process.

6. The power conversion and environment sensing device according to claim 1, characterized in that: The environmental sensing circuit includes a door magnetic circuit and a water immersion circuit, and the door magnetic circuit and the water immersion circuit include a sensing port, a seventh resistor, an eighth resistor, a ninth resistor, a first optocoupler, a transistor and a second optocoupler. The sensing port is used to receive an external environmental signal, and the two ends of the seventh resistor are respectively connected to the sensing port and the input end of the first optocoupler, so as to adjust the level of the sensing signal; the output end of the first optocoupler is connected to the single-chip microcomputer, and the base of the transistor is connected to the sensing port, so as to convert the sensing signal into a signal that can be processed by the transistor; the collector of the transistor is connected to the input end of the second optocoupler, and the emitter is grounded, so as to amplify the sensing signal; the output end of the second optocoupler is connected to the single-chip microcomputer, so as to output an environmental abnormality signal.

7. The power conversion and environment sensing device according to claim 1, characterized in that: The power conversion and environmental perception device also includes an electric energy detection circuit, which is connected to the rectifier and filter circuit and is used to detect the electric energy consumption parameters of the input AC power. The electric energy detection circuit includes an electric energy detection chip, and the 6th pin and the 7th pin of the electric energy detection chip are respectively connected to the live wire and the neutral wire of the AC power input. The electric energy detection chip is connected to the single-chip microcomputer and is used to transmit the measured electric energy parameters to the single-chip microcomputer for processing and display.

8. A host computer, characterized in that: The host computer can control the on / off of the multi-channel DC / DC conversion circuit in the power conversion and environmental sensing device. The host computer includes a single-chip microcomputer and an on / off control circuit connected to the single-chip microcomputer. The on / off control circuit includes a third optocoupler and a protection resistor. The input end of the optocoupler is connected to the output end of the single-chip microcomputer. The protection resistor is connected between the output end of the optocoupler and the control end of the multi-channel DC / DC conversion circuit, and is used to isolate the control signal and protect the multi-channel DC / DC conversion circuit.

9. The host computer according to claim 8, characterized in that: The host computer communicates with the outside world through the MDT10P53 chip. The host computer according to claim 8, characterized in that: The host computer also includes a display module and an input module, wherein the display module is used to display the working status of the power conversion and environment perception device, and the input module is used to receive user instructions and pass them to the single-chip microcomputer to achieve remote control of the power conversion and environment perception device. The host computer also has a data communication interface, which is connected to the single-chip microcomputer and is used to achieve data exchange with external devices, thereby achieving remote monitoring and management of the power conversion and environment perception device.

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