An intelligent cabinet environment monitoring system

Abstract

The utility model discloses an intelligent cabinet environment monitoring system, including a microcontroller U5 and an environmental temperature and humidity measurement circuit electrically connected to the microcontroller U5, a dew point sensor communication circuit, a smoke alarm measurement circuit, a load control output circuit, a load fault information collection circuit, a dehumidifier working current detection circuit, an RS485 communication circuit and a display circuit, wherein the environmental temperature and humidity measurement circuit includes a temperature and humidity sensor U3 and a control chip U2, wherein the output end of the temperature and humidity sensor U3 is electrically connected to the collection end of the control chip U2, and the control chip U2 is electrically connected to the microcontroller U5. The utility model discloses an intelligent cabinet environment monitoring system, which solves the problems that the above-mentioned dehumidifier cannot effectively dehumidify, the smoke alarm cannot give an early warning before a fire occurs, and there is no decondensation removal function.

Description

Technical Field

[0001] The utility model belongs to the technical field of cabinet environment monitoring, and in particular relates to an intelligent cabinet environment monitoring system. Background Art

[0002] The use of power equipment is indispensable in various links such as power generation and distribution. In this case, the safe operation of power equipment has become the focus of attention. Due to the diverse operating environments of power equipment, condensation control inside power cabinets and fire accident prevention have always been the focus of safe operation of power equipment. In particular, medium and high voltage equipment in power equipment has more stringent requirements on the operating environment, and the demand for dehumidification of the operating environment of such equipment has always been strong.

[0003] Since conventional general-purpose dehumidification devices are difficult to meet the needs of some specific occasions, a special cabinet environment management system is needed to solve the problems of high humidity and condensation inside the cabinet and prevent the occurrence of fire accidents.

[0004] Currently, the market generally uses single semiconductor dehumidifiers, hygroscopic materials, and ordinary dehumidifiers to solve the problem of high humidity, and uses fixed-point smoke alarms to prevent fires.

[0005] 1. Use semiconductor dehumidifier for dehumidification:

[0006] The traditional semiconductor dehumidifiers currently used in the market are generally small in power and size. Although they can be easily installed inside various cabinets, they are only suitable for 1m2 due to limitations in size, power, circulating air volume, dehumidification principle, etc. 3 The dehumidification capacity of the following environments is generally only a few hundred milliliters per day, and the dehumidification efficiency is extremely low, which generally cannot meet the dehumidification requirements of larger spaces. In addition, this solution cannot solve the condensation problem caused by the temperature difference in the top plate, side plate, door plate, etc. in the cabinet.

[0007] 2. Use physical methods to dehumidify:

[0008] Place some hygroscopic materials inside the cabinet. This material can reduce the humidity inside the cabinet slightly in a short period of time. If moisture from the outside environment of the cabinet continues to enter, once the hygroscopic material is saturated, it will no longer be able to absorb moisture.

[0009] 3. Use ordinary household dehumidifier for dehumidification:

[0010] The secondary output power quality of wind power and photovoltaic box transformers, cabinets and other equipment is poor, the power supply fluctuates greatly, and the interference introduced through the power supply and signal lines is relatively large. Household dehumidifiers are prone to freezes, program errors, control chaos, etc., and cannot perform their dehumidification functions.

[0011] 4. Use fixed-point smoke alarms to detect fires

[0012] Currently, most of the smoke alarms on the market use fixed-point smoke alarms to detect fires. Such alarms cannot understand the solubility of smoke particles on site and can only send out alarm signals after a fire occurs, which is unable to meet prevention requirements.

[0013] Therefore, further improvements are made to the above problems. Utility Model Content

[0014] The main purpose of the utility model is to provide an intelligent cabinet environment monitoring system to solve the problems that the above-mentioned dehumidifier cannot effectively dehumidify, the smoke alarm cannot give an early warning before a fire occurs, and there is no decondensation removal function. The system has two-way environment measurement, two-way dew point temperature measurement, two-way smoke concentration measurement functions, heater output, dehumidifier control output, fan output, smoke alarm output, oil temperature over-temperature trip output, comprehensive fault alarm output functions, sensor status, load control status, fault information, alarm information, fault alarm history record, dehumidifier working current detection function and RS485 communication functions.

[0015] To achieve the above purpose, the utility model provides an intelligent cabinet environment monitoring system, including a microcontroller U5 and an environmental temperature and humidity measurement circuit, a dew point sensor communication circuit, a smoke alarm measurement circuit, a load control output circuit, a load fault information collection circuit, a dehumidifier working current detection circuit, an RS485 communication circuit and a display circuit electrically connected to the microcontroller U5, wherein:

[0016] The environmental temperature and humidity measurement circuit includes a temperature and humidity sensor U3 and a control chip U2, the output end of the temperature and humidity sensor U3 is electrically connected to the collection end of the control chip U2, and the control chip U2 is electrically connected to the microcontroller U5;

[0017] The dew point sensor communication circuit includes a (sensor) channel selection chip U4, a channel selection chip U5 and a sensor communication interface chip U8-U13, the sensor communication interface chip U8-U13 is electrically connected to the channel selection chip U4 and the channel selection chip U5 respectively, and the channel selection chip U4 and the channel selection chip U5 are electrically connected to the microcontroller U5 respectively (electrically connected to the 45th and 46th pins of the microcontroller U5 respectively, and multiple sensor communication interface chips are connected to multiple dew point sensors);

[0018] The smoke alarm measurement circuit includes a smoke switch interface U14 and a smoke switch interface U15, the input end of the smoke switch interface U14 and the input end of the smoke switch interface U15 are respectively connected to the smoke sensor, and the output end of the smoke switch interface U14 and the output end of the smoke switch interface U15 are respectively connected to the microcontroller U5 (electrically connected to the 37th and 38th pins of the microcontroller U5 respectively);

[0019] The load control output circuit includes a driver and a plurality of load control relays (K1-K9), and the driver is electrically connected to the microcontroller U5 and the load control relays respectively;

[0020] The load fault information acquisition circuit includes a current transformer CT1 and a current transformer CT2, and the dehumidifier working current detection circuit includes an op amp U8A and an op amp U8B, the current transformer CT1 is electrically connected to the positive input terminal of the op amp U8A through a resistor R43, and the output terminal of the op amp U8A is electrically connected to the 8th pin of the microcontroller U5 through a diode D2, the current transformer CT2 is electrically connected to the positive input terminal of the op amp U8B through a resistor R45, and the output terminal of the op amp U8B is electrically connected to the 9th pin of the microcontroller U5 through a diode D3;

[0021] The RS485 communication circuit includes a communication chip U6, wherein pin 3 of the communication chip U6 is electrically connected to pin 5 of the microcontroller U5 via a resistor R15, pin 4 of the communication chip U6 is electrically connected to pin 7 of the microcontroller U5 via a resistor R16, and pin 6 of the communication chip U6 is electrically connected to pin 6 of the microcontroller U5 via a resistor R17;

[0022] The display circuit includes a display M1 , and the display M1 is electrically connected to the microcontroller U5 .

[0023] As a further preferred technical solution of the above technical solution, pin 3 of the temperature and humidity sensor U3 is electrically connected to pin 1 of the control chip U2, pin 4 of the temperature and humidity sensor U3 is electrically connected to pin 8 of the control chip U2, and pin 2 of the temperature and humidity sensor U3 is electrically connected to pin 3 of the control chip U2 through transistor Q1 and resistor R4.

[0024] As a further preferred technical solution of the above technical solution, pins 6 and 7 of the sensor communication interface chip U8 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U4 through a resistor R40, and pin 4 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U5 through a resistor R42;

[0025] Pins 6 and 7 of the sensor communication interface chip U9 are respectively connected to (another) dew point sensor, pin 1 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U4 through resistor R49, and pin 4 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U5 through resistor R51;

[0026] Pins 6 and 7 of the sensor communication interface chip U10 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U4 through a resistor R58, and pin 4 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U5 through a resistor R60;

[0027] Pins 6 and 7 of the sensor communication interface chip U11 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U4 through a resistor R67, and pin 4 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U5 through a resistor R69;

[0028] Pins 6 and 7 of the sensor communication interface chip U12 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U4 through a resistor R76, and pin 4 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U5 through a resistor R78;

[0029] Pins 6 and 7 of the sensor communication interface chip U13 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U4 through resistor R85, and pin 4 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U5 through resistor R87.

[0030] As a further preferred technical solution of the above technical solution, the driver includes a driving chip U51 and a driving chip U1, wherein pin 1 of the driving chip U51 is electrically connected to pin 24 of the microcontroller U5 through a resistor R24, pin 2 of the driving chip U51 is electrically connected to pin 25 of the microcontroller U5 through a resistor R25, pin 3 of the driving chip U51 is electrically connected to pin 26 of the microcontroller U5 through a resistor R26, pin 4 of the driving chip U51 is electrically connected to pin 27 of the microcontroller U5 through a resistor R27, and pin 5 of the driving chip U51 is electrically connected to pin 28 of the microcontroller U5 through a resistor R28;

[0031] Pin 1 of the driver chip U1 is electrically connected to pin 2 of the microcontroller U5 through resistor R1, pin 2 of the driver chip U1 is electrically connected to pin 1 of the microcontroller U5 through resistor R2, pin 3 of the driver chip U1 is electrically connected to pin 48 of the microcontroller U5 through resistor R3, and pin 4 of the driver chip U1 is electrically connected to pin 11 of the microcontroller U5 through resistor R4.

[0032] As a further preferred technical solution of the above technical solution, it also includes a key detection circuit, which includes a plurality of keys (KEY1-6) and the keys are connected to the microcontroller U5.

[0033] As a further preferred technical solution of the above technical solution, it also includes a power supply circuit (for power supply). BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of an intelligent cabinet environment monitoring system of the utility model.

[0035] Figure 2 The utility model is a circuit diagram of a microcontroller U5 of an intelligent cabinet environment monitoring system.

[0036] Figure 3 The utility model discloses an environmental temperature and humidity measurement circuit diagram of an intelligent cabinet environment monitoring system.

[0037] Figure 4 The utility model discloses a communication circuit diagram of a dew point sensor of an intelligent cabinet environment monitoring system.

[0038] Figure 5 The utility model discloses a smoke alarm measurement circuit diagram of an intelligent cabinet environment monitoring system.

[0039] Figure 6 The utility model discloses a load control output circuit diagram of an intelligent cabinet environment monitoring system.

[0040] Figure 7 The utility model discloses a load fault information collection circuit diagram of an intelligent cabinet environment monitoring system.

[0041] Figure 8 The utility model discloses a dehumidifier working current detection circuit diagram of an intelligent cabinet environment monitoring system.

[0042] Fig. 9 The utility model discloses an RS485 communication circuit diagram of an intelligent cabinet environment monitoring system.

[0043] Fig.10 The utility model discloses a display circuit diagram of an intelligent cabinet environment monitoring system.

[0044] Fig.11 The utility model discloses a key detection circuit diagram of an intelligent cabinet environment monitoring system.

[0045] Fig.12 The utility model discloses a power supply circuit diagram of an intelligent cabinet environment monitoring system. DETAILED DESCRIPTION

[0046] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0047] The utility model discloses an intelligent cabinet environment monitoring system. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0048] In the embodiments of the present invention, those skilled in the art will note that the resistors and the like involved in the present invention may be regarded as prior art.

[0049] Preferred embodiments.

[0050] like Figure 1-12 As shown, the utility model discloses an intelligent cabinet environment monitoring system, including a microcontroller U5 and an environmental temperature and humidity measurement circuit electrically connected to the microcontroller U5, a dew point sensor communication circuit, a smoke alarm measurement circuit, a load control output circuit, a load fault information collection circuit, a dehumidifier working current detection circuit, an RS485 communication circuit and a display circuit, wherein:

[0051] The environmental temperature and humidity measurement circuit includes a temperature and humidity sensor U3 and a control chip U2, the output end of the temperature and humidity sensor U3 is electrically connected to the collection end of the control chip U2, and the control chip U2 is electrically connected to the microcontroller U5;

[0052] The dew point sensor communication circuit includes a (sensor) channel selection chip U4, a channel selection chip U5 and a sensor communication interface chip U8-U13, the sensor communication interface chip U8-U13 is electrically connected to the channel selection chip U4 and the channel selection chip U5 respectively, and the channel selection chip U4 and the channel selection chip U5 are electrically connected to the microcontroller U5 respectively (electrically connected to the 45th and 46th pins of the microcontroller U5 respectively, and multiple sensor communication interface chips are connected to multiple dew point sensors);

[0053] The smoke alarm measurement circuit includes a smoke switch interface U14 and a smoke switch interface U15, the input end of the smoke switch interface U14 and the input end of the smoke switch interface U15 are respectively connected to the smoke sensor, and the output end of the smoke switch interface U14 and the output end of the smoke switch interface U15 are respectively connected to the microcontroller U5 (electrically connected to the 37th and 38th pins of the microcontroller U5 respectively);

[0054] The load control output circuit includes a driver and a plurality of load control relays (K1-K9), and the driver is electrically connected to the microcontroller U5 and the load control relays respectively;

[0055] The load fault information acquisition circuit includes a current transformer CT1 and a current transformer CT2, and the dehumidifier working current detection circuit includes an op amp U8A and an op amp U8B, the current transformer CT1 is electrically connected to the positive input terminal of the op amp U8A through a resistor R43, and the output terminal of the op amp U8A is electrically connected to the 8th pin of the microcontroller U5 through a diode D2, the current transformer CT2 is electrically connected to the positive input terminal of the op amp U8B through a resistor R45, and the output terminal of the op amp U8B is electrically connected to the 9th pin of the microcontroller U5 through a diode D3;

[0056] The RS485 communication circuit includes a communication chip U6, wherein pin 3 of the communication chip U6 is electrically connected to pin 5 of the microcontroller U5 via a resistor R15, pin 4 of the communication chip U6 is electrically connected to pin 7 of the microcontroller U5 via a resistor R16, and pin 6 of the communication chip U6 is electrically connected to pin 6 of the microcontroller U5 via a resistor R17;

[0057] The display circuit includes a display M1 , and the display M1 is electrically connected to the microcontroller U5 .

[0058] Specifically, pin 3 of the temperature and humidity sensor U3 is electrically connected to pin 1 of the control chip U2, pin 4 of the temperature and humidity sensor U3 is electrically connected to pin 8 of the control chip U2, and pin 2 of the temperature and humidity sensor U3 is electrically connected to pin 3 of the control chip U2 through transistor Q1 and resistor R4.

[0059] More specifically, pins 6 and 7 of the sensor communication interface chip U8 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U4 through a resistor R40, and pin 4 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U5 through a resistor R42;

[0060] Pins 6 and 7 of the sensor communication interface chip U9 are respectively connected to (another) dew point sensor, pin 1 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U4 through resistor R49, and pin 4 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U5 through resistor R51;

[0061] Pins 6 and 7 of the sensor communication interface chip U10 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U4 through a resistor R58, and pin 4 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U5 through a resistor R60;

[0062] Pins 6 and 7 of the sensor communication interface chip U11 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U4 through a resistor R67, and pin 4 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U5 through a resistor R69;

[0063] Pins 6 and 7 of the sensor communication interface chip U12 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U4 through a resistor R76, and pin 4 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U5 through a resistor R78;

[0064] Pins 6 and 7 of the sensor communication interface chip U13 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U4 through resistor R85, and pin 4 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U5 through resistor R87.

[0065] Furthermore, the driver includes a driver chip U51 and a driver chip U1, wherein pin 1 of the driver chip U51 is electrically connected to pin 24 of the microcontroller U5 through a resistor R24, pin 2 of the driver chip U51 is electrically connected to pin 25 of the microcontroller U5 through a resistor R25, pin 3 of the driver chip U51 is electrically connected to pin 26 of the microcontroller U5 through a resistor R26, pin 4 of the driver chip U51 is electrically connected to pin 27 of the microcontroller U5 through a resistor R27, and pin 5 of the driver chip U51 is electrically connected to pin 28 of the microcontroller U5 through a resistor R28;

[0066] Pin 1 of the driver chip U1 is electrically connected to pin 2 of the microcontroller U5 through resistor R1, pin 2 of the driver chip U1 is electrically connected to pin 1 of the microcontroller U5 through resistor R2, pin 3 of the driver chip U1 is electrically connected to pin 48 of the microcontroller U5 through resistor R3, and pin 4 of the driver chip U1 is electrically connected to pin 11 of the microcontroller U5 through resistor R4.

[0067] Furthermore, it also includes a key detection circuit, which includes a plurality of keys (KEY1-6) and the keys are connected to the microcontroller U5.

[0068] Preferably, a power supply circuit (for power supply) is also included.

[0069] For this utility model:

[0070] The ambient temperature and humidity measurement circuit is connected to the ambient temperature and humidity sensor, which is a digital sensor. The digital sensor is a high-precision digital sensor, which not only improves the measurement accuracy of temperature and humidity, but also improves the anti-interference of the control terminal, making the measurement stability of the ambient temperature and humidity measurement circuit better.

[0071] The dew point sensor communication circuit is connected to the dew point sensor, and the dew point sensor is connected to the microcontroller by IIC communication. The dew point collector can measure the dew point temperature of the panels inside the cabinet, and combined with controlling the start and stop of the silicone heating film, the condensation problem of the panels inside the cabinet can be solved.

[0072] The smoke alarm measurement circuit is connected to the smoke alarm. The smoke alarm and the microcontroller are connected by RS485 communication, which greatly improves the stability of signal reading. At the same time, the smoke alarm can measure the concentration of environmental smoke particles in real time. Users can set the smoke alarm concentration value according to the actual situation on site to adapt to different environments.

[0073] The load control output circuit is connected to various load outputs, including a dehumidifier, which dehumidifies the environment inside the cabinet; a heater, which can heat the ambient temperature inside the cabinet, solve the condensation problem of the internal panels of the cabinet, or reduce the ambient humidity inside the cabinet; a fan, which can reduce the internal ambient temperature of the cabinet; a smoke alarm output, which can output a smoke alarm dry node signal; and a fault alarm output, which can be triggered by information such as a dew point sensor, an ambient temperature and humidity sensor, and a smoke alarm.

[0074] The load fault signal acquisition circuit includes a dehumidifier fault alarm. When the dehumidifier is working, the circuit determines the load fault information by detecting the load current. When the current is zero, it means that the load is faulty, otherwise it is normal.

[0075] The dehumidifier working current detection circuit can detect the working circuit of the dehumidifier in real time, and can detect whether the dehumidifier is faulty in combination with the working status of the dehumidifier.

[0076] The RS485 communication circuit can upload all the measurement information, working status, fault conditions, etc. of the monitoring system to the background control room, making it convenient for background users to understand the operating status of the control and monitoring system in real time and ensure the smooth operation of the control and monitoring system.

[0077] The display circuit is connected to the digital tube and LED indicator light, which can intuitively display the measurement data, working status, fault information, etc. of the monitoring system. Each key detection is connected to the touch key, which can flexibly perform corresponding parameter settings and interface adjustments according to needs.

[0078] The power supply circuit connects the entire system and is used to convert the AC power into the low-voltage DC power required by the system and supply power to the internal circuits.

[0079] The beneficial effects of the utility model are:

[0080] 1. The product can detect the smoke concentration inside the cabinet in real time, and can detect fire hazards in the cabinet early to prevent fire. When the smoke concentration reaches the threshold, it can automatically stop the heater or fan to avoid the expansion of the fault.

[0081] 2. At the same time, the wide voltage, high-performance switching power supply, the voltage reaches (85-245) V / AC, (110-350) V / DC, ensures the anti-interference of the circuit, and uses industrial-grade components to ensure the stability of the circuit in harsh environments.

[0082] 3. The product uses high-precision and high-reliability temperature and humidity sensors, which can stably detect ambient temperature and humidity for a long time.

[0083] 4. The host of the monitoring system is equipped with an OLED screen that operates at a wide temperature range of -40-+70℃ to ensure that the system can operate normally under ultra-low temperatures.

[0084] 5. The host of the monitoring system can detect the disconnection of sensors and heating loads. When a fault occurs, the device can output in time

[0085] The fault alarm signal informs the customer.

[0086] 6. With RS485 communication function, the local working information of the monitoring system can be uploaded to the background control system, making it easier for users to understand the operation status of the on-site monitoring system.

[0087] It is worth mentioning that the technical features such as resistors involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0088] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An intelligent cabinet environment monitoring system, characterized in that: It includes a microcontroller U5 and an environmental temperature and humidity measurement circuit, a dew point sensor communication circuit, a smoke alarm measurement circuit, a load control output circuit, a load fault information collection circuit, a dehumidifier working current detection circuit, an RS485 communication circuit and a display circuit electrically connected to the microcontroller U5, wherein: The environmental temperature and humidity measurement circuit includes a temperature and humidity sensor U3 and a control chip U2, the output end of the temperature and humidity sensor U3 is electrically connected to the collection end of the control chip U2, and the control chip U2 is electrically connected to the microcontroller U5; The dew point sensor communication circuit includes a channel selection chip U4, a channel selection chip U5 and a sensor communication interface chip U8-U13, the sensor communication interface chip U8-U13 is electrically connected to the channel selection chip U4 and the channel selection chip U5 respectively, and the channel selection chip U4 and the channel selection chip U5 are electrically connected to the microcontroller U5 respectively; The smoke alarm measurement circuit comprises a smoke switch interface U14 and a smoke switch interface U15, the input end of the smoke switch interface U14 and the input end of the smoke switch interface U15 are respectively connected to the smoke sensor, and the output end of the smoke switch interface U14 and the output end of the smoke switch interface U15 are respectively connected to the microcontroller U5; The load control output circuit includes a driver and a plurality of load control relays, and the driver is electrically connected to the microcontroller U5 and the load control relays respectively; The load fault information acquisition circuit includes a current transformer CT1 and a current transformer CT2, and the dehumidifier working current detection circuit includes an op amp U8A and an op amp U8B, the current transformer CT1 is electrically connected to the positive input terminal of the op amp U8A through a resistor R43, and the output terminal of the op amp U8A is electrically connected to the 8th pin of the microcontroller U5 through a diode D2, the current transformer CT2 is electrically connected to the positive input terminal of the op amp U8B through a resistor R45, and the output terminal of the op amp U8B is electrically connected to the 9th pin of the microcontroller U5 through a diode D3; The RS485 communication circuit includes a communication chip U6, wherein pin 3 of the communication chip U6 is electrically connected to pin 5 of the microcontroller U5 via a resistor R15, pin 4 of the communication chip U6 is electrically connected to pin 7 of the microcontroller U5 via a resistor R16, and pin 6 of the communication chip U6 is electrically connected to pin 6 of the microcontroller U5 via a resistor R17; The display circuit includes a display M1 , and the display M1 is electrically connected to the microcontroller U5 .

2. The intelligent cabinet environment monitoring system according to claim 1, characterized in that: Pin 3 of the temperature and humidity sensor U3 is electrically connected to pin 1 of the control chip U2, pin 4 of the temperature and humidity sensor U3 is electrically connected to pin 8 of the control chip U2, and pin 2 of the temperature and humidity sensor U3 is electrically connected to pin 3 of the control chip U2 through transistor Q1 and resistor R4.

3. The intelligent cabinet environment monitoring system according to claim 2, characterized in that: Pins 6 and 7 of the sensor communication interface chip U8 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U4 through a resistor R40, and pin 4 of the sensor communication interface chip U8 is electrically connected to pin 13 of the channel selection chip U5 through a resistor R42; Pins 6 and 7 of the sensor communication interface chip U9 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U4 through a resistor R49, and pin 4 of the sensor communication interface chip U9 is electrically connected to pin 14 of the channel selection chip U5 through a resistor R51; Pins 6 and 7 of the sensor communication interface chip U10 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U4 through a resistor R58, and pin 4 of the sensor communication interface chip U10 is electrically connected to pin 15 of the channel selection chip U5 through a resistor R60; Pins 6 and 7 of the sensor communication interface chip U11 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U4 through a resistor R67, and pin 4 of the sensor communication interface chip U11 is electrically connected to pin 12 of the channel selection chip U5 through a resistor R69; Pins 6 and 7 of the sensor communication interface chip U12 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U4 through a resistor R76, and pin 4 of the sensor communication interface chip U12 is electrically connected to pin 1 of the channel selection chip U5 through a resistor R78; Pins 6 and 7 of the sensor communication interface chip U13 are respectively connected to the dew point sensor, pin 1 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U4 through resistor R85, and pin 4 of the sensor communication interface chip U13 is electrically connected to pin 5 of the channel selection chip U5 through resistor R87.

4. The intelligent cabinet environment monitoring system according to claim 3, characterized in that: The driver includes a driver chip U51 and a driver chip U1, wherein pin 1 of the driver chip U51 is electrically connected to pin 24 of the microcontroller U5 through a resistor R24, pin 2 of the driver chip U51 is electrically connected to pin 25 of the microcontroller U5 through a resistor R25, pin 3 of the driver chip U51 is electrically connected to pin 26 of the microcontroller U5 through a resistor R26, pin 4 of the driver chip U51 is electrically connected to pin 27 of the microcontroller U5 through a resistor R27, and pin 5 of the driver chip U51 is electrically connected to pin 28 of the microcontroller U5 through a resistor R28; Pin 1 of the driver chip U1 is electrically connected to pin 2 of the microcontroller U5 through resistor R1, pin 2 of the driver chip U1 is electrically connected to pin 1 of the microcontroller U5 through resistor R2, pin 3 of the driver chip U1 is electrically connected to pin 48 of the microcontroller U5 through resistor R3, and pin 4 of the driver chip U1 is electrically connected to pin 11 of the microcontroller U5 through resistor R4.

5. The intelligent cabinet environment monitoring system according to claim 4, characterized in that: It also includes a key detection circuit, which includes a plurality of keys and the keys are connected to the microcontroller U5.

6. The intelligent cabinet environment monitoring system according to claim 5, characterized in that: Also includes a power supply circuit.

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