Electronic circuit environment control integrated unit
By integrating dust, temperature and humidity sensors and PLC controllers, the board environment control unit is solved, and the board environment monitoring and control problems are achieved, and the board is stable operation and life extension is achieved.
Patent Information
- Application Number
- CN202422608603.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The prior art is difficult to effectively monitor and control the working environment of the circuit board, especially the impact of factors such as temperature, humidity and dust on the performance and stability of the circuit board, resulting in the circuit board being damaged or performance degraded in unsuitable environments.
The dust quality sensor, temperature sensor and humidity sensor are connected through RS485 communication mode and combined with the PLC controller to realize real-time monitoring and adjustment of the circuit board environment, including the use of a carbon brush vacuum cleaner and an ultrasonic vibrating humidifier for environmental control.
Accurate control of the circuit board environment is achieved, ensuring that the circuit board works in the best condition, improving the overall performance and life of the equipment, and reducing the risk of interference and failure.
Smart Images
Figure CN223229900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic circuits, in particular to an electronic circuit environment control integrated unit. Background Art
[0002] With the rapid development of science and technology, electronic equipment has become an indispensable part of our daily life. As the core component of electronic equipment, the environmental control of circuit boards is particularly important.
[0003] Environmental control is an important consideration. Factors such as temperature, humidity, and air quality will affect the performance and stability of the circuit board. Therefore, we need to take corresponding measures to ensure that the circuit board can work stably in various environments.
[0004] Temperature is an important factor affecting the performance of circuit boards. At high temperatures, circuit boards may burn due to poor heat dissipation; in low temperature environments, circuit boards may be damaged by ice. Therefore, we need to select appropriate heat dissipation and heating methods based on the maximum and minimum operating temperatures of the circuit board to ensure that the circuit board can operate at the appropriate temperature.
[0005] Humidity is also an important factor affecting the performance of circuit boards. When the humidity is too high, the circuit boards may be damaged due to moisture; when the humidity is too low, the circuit boards may experience static electricity due to dryness. Therefore, we need to select appropriate humidification and dehumidification methods based on the maximum and minimum operating humidity of the circuit boards to ensure that the circuit boards can operate at appropriate humidity.
[0006] Air quality is also an important factor affecting the performance of circuit boards. In a severely polluted environment, circuit boards may be damaged by inhaling harmful gases; in an environment with good air quality, circuit boards may perform better by breathing fresh air. Therefore, we need to select appropriate air purifiers and ventilation equipment based on the maximum and minimum working air quality standards of the circuit board to ensure that the circuit board can work in good air quality. Utility Model Content
[0007] Circuit board environment control is an indispensable part of modern electronic equipment. It is of great significance to ensure the stable operation of circuit boards and extend their service life. The purpose of this utility model is to comprehensively consider factors such as temperature, humidity, dust and pollutants, and take effective measures to control them, so as to ensure the normal operation of circuit boards and extend their service life.
[0008] To achieve the above-mentioned purpose, the utility model provides an electronic circuit environment control integrated unit, including a dust quality sensor, a temperature sensor, a humidity sensor and a PLC. The three sensors are connected by RS485 communication mode, and the PLC communication protocol adopts RTU. The specific connection mode of the integrated unit includes a three-phase four-wire power supply, which is respectively connected to the circuit breaker QF1 / QF2 / K2 / K3 / PLC and the DC power supply AC220V / DC24V.
[0009] The lower sides of the circuit breakers K2 / K3 are respectively connected to the carbon brush type dust collection motor and the ultrasonic vibration humidifier. The DC power supply AC220V / DC24V is connected to K0, K1, the temperature sensor, the humidity sensor and the dust quality sensor. The lower sides of K0 and K1 are connected to the semiconductor temperature control board. One end of the RS485 communication line is connected to the communication socket of the PLC, and the other end is connected to the temperature sensor, the dust quality sensor and the temperature sensor communication port.
[0010] The PLC output is connected to the coils of K0, K1, K2, K3, K4, K5, and K6, and the SB1 button and SB2 button are connected to the PLCI0.0 terminal and I0.1 terminal respectively;
[0011] When circuit breakers QF1 and QF2 are closed, power is supplied to the DC power supply AC220V / DC24V and PLC respectively. After the SB1 button is closed, the PLC starts to start, and the temperature sensor, dust mass sensor, and temperature sensor start to detect temperature, humidity, and PM value respectively. If the three reach the upper limit set by each in the PLC, K0 / K3 / K2 will be energized, or if the temperature reaches the lower limit, K1 will start to cool down.
[0012] The advantages and progress of the present invention over the existing technology are as follows: the circuit board environment control integrated unit is an advanced electronic device used to monitor and control the working environment of the circuit board. It integrates multiple sensors such as temperature, humidity, dust, etc., and can monitor the working environment status of the circuit board in real time and adjust it as needed. This integrated unit has high reliability and stability, can ensure that the circuit board works in the best condition, improve the overall performance and life of the equipment, and minimize interference with the equipment. There is no similar product or similar paper published in the electrical industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the electrical structure of the utility model. DETAILED DESCRIPTION
[0014] We need to precisely control the environment in which the circuit board is located. First, we must ensure that the operating temperature of the circuit board is within an appropriate range. Too high or too low a temperature may cause damage to the circuit board. Therefore, we should reasonably adjust the ambient temperature according to the actual needs of the circuit board to avoid the impact of too high or too low temperature on the circuit board.
[0015] Secondly, humidity control is equally important. Too high humidity may cause the circuit board to become damp and short-circuit, while too low humidity may cause static electricity accumulation and damage the circuit board. Therefore, we need to control the humidity at an appropriate level to ensure the safe and stable operation of the circuit board.
[0016] Finally, dust and pollutants are also environmental factors that need attention. Dust and pollutants may block the heat dissipation channels of the circuit board, affect the heat dissipation effect, and even cause faults such as short circuits. Therefore, we need to regularly clean and maintain the circuit board environment to keep the environment clean and hygienic.
[0017] In summary, circuit board environment control is one of the key factors to ensure the stable operation of the circuit board.
[0018] Three types of sensors are used. For dust, we use a dust mass sensor with a detection range of PM2.5-PM10. The dust adsorption surface uses carbon fiber adsorption cotton, and the temperature and humidity sensor is ZS-SHT30-485-L-01. For temperature detection, we use the ANTHONE-LU-920UY module, and the probe uses a PT100 platinum resistance with a measurement range of -50° to 600°. All three are connected using RS485 communication. The host is a Siemens PLC (S7-200), and the communication protocol is RTU. Humidity is dried by heating, and humidification uses the principle of high-frequency vibration of water droplets to separate water molecules. When the dust reaches the target value, the dust suction fan starts, fixes the dust flow channel, and then adds carbon fiber dust adsorption cotton at the dust channel entrance. The dust is drawn to the dust collection surface on the side wall of the distribution cabinet by the suction fan inside the control cabinet. The temperature is controlled by a semiconductor temperature control board, and the ambient temperature is adjusted by polarity switching (changing the power polarity) to heat or cool. The polarity switching interval is set to 5 seconds.
[0019] Specific connection method:
[0020] The power supply part adopts a three-phase four-wire system, which is connected to the circuit breaker QF1 / QF2 / K2 / K3 / programmable controller and the DC power supply (AC220V / DC24V) respectively.
[0021] Circuit breakers K2 / K3 are connected to the carbon brush vacuum motor and ultrasonic vibration humidifier respectively, the DC power supply (AC220V / DC24V) is connected to K0, K1, temperature sensor, humidity sensor and dust quality sensor, the lower side of K0 and K1 is connected to the semiconductor temperature control board, and the AB end of the RS485 communication line (lines 4 and 5) extends from the PLC communication socket to connect to the temperature sensor, dust quality sensor and temperature sensor.
[0022] The PLC output is connected to the coils of K0, K1, K2, K3, K4, K5, and K6, and the SB1 button and SB2 button are connected to the PLCI0.0 terminal and I0.1 terminal respectively.
[0023] List of components and materials: temperature sensor ZS-SHT30-485-L-01, dust mass sensor PM2.2-PM10, temperature sensor ANTHONE-LU-920UY, PLC S7-200-CPU-224CN, DC power supply WAGO-AC220V-DC24V, semiconductor temperature control board dual-core 4 copper tube WSV, ultrasonic vibration sensor model W0403-2, vacuum cleaner motor 2M-AC220-1500W.
[0024] Working process: When QF1 and QF2 are closed, power is supplied to the DC power supply and PLC, respectively. When the SB1 button is closed, the PLC starts up, and the temperature sensor, dust mass sensor, and temperature sensor begin monitoring temperature, humidity, and PM values, respectively. If these three values reach their respective upper limits set within the PLC, K0 / K3 / K2 engage, or if the temperature reaches its lower limit, K1 activates to cool the system.
[0025] It should be noted that the PLC mentioned in the article is a common structure on the market, and the internal functional settings for completing the purpose of this utility model are also conventional settings known to those skilled in the art. There is no improvement to the internal programs and methods of the PLC. This utility model protects the structural units formed by the interconnection of various components, and is not limited to the models of components appearing in the article. Components with the same functions are all within the protection scope of this utility model.
Claims
1. An electronic circuit environment control integrated unit, characterized in that: It includes dust quality sensor, temperature sensor, humidity sensor and PLC. All three sensors are connected using RS485 communication method, and the PLC communication protocol adopts RTU. The specific connection method of this integrated unit includes the power supply adopting three-phase four-wire system, which is connected to the circuit breaker QF1 / QF2 / K2 / K3 / PLC and the DC power supply AC220V / DC24V respectively. The lower sides of the circuit breakers K2 / K3 are connected to the carbon brush type dust removal motor and the ultrasonic vibration humidifier respectively. The DC power supply AC220V / DC24V is connected to K0, K1, the temperature sensor, the humidity sensor and the dust quality sensor. The lower sides of K0 and K1 are connected to the semiconductor temperature control board. One end of the RS485 communication line is connected to the communication socket of the PLC, and the other end is connected to the temperature sensor, the dust quality sensor and the temperature sensor communication port. The PLC output is connected to the coils of K0, K1, K2, K3, K4, K5, and K6, and the SB1 button and SB2 button are connected to the PLCI0.0 terminal and I0.1 terminal respectively; When circuit breakers QF1 and QF2 are closed, power is supplied to the DC power supply AC220V / DC24V and PLC respectively. After the SB1 button is closed, the PLC starts to start, and the temperature sensor, dust mass sensor, and temperature sensor start to detect temperature, humidity, and PM value respectively. If the three reach the upper limit set by each in the PLC, K0 / K3 / K2 will be energized, or if the temperature reaches the lower limit, K1 will start to cool down.