Data acquisition system and acquisition device of protective multi-sensor set

Abstract

The utility model discloses a protective multi-sensor integrated data acquisition system and a collector. The protective multi-sensor integrated data acquisition system comprises a power supply module, a main control module, a sensor module and an RS485 communication module, the power supply module is used for supplying power to the whole acquisition system and is respectively in circuit connection with the main control module and the sensor module; the main control module is used for controlling the operation of the system and is connected with the sensor module and the RS485 communication module; the sensor module is used for collecting environment data, and the data collection system is connected with an upper computer through the RS485 communication module for remote data transmission. According to the utility model, the temperature sensor, the humidity sensor, the illuminance sensor and the ultraviolet intensity sensor are integrated into a whole, so that a four-in-one multi-parameter acquisition function is realized. The collector uses a plurality of protection modes, can continuously work in a severe environment, and can be widely applied to the fields of industrial and agricultural production, environment monitoring and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to a data acquisition system and a collector of a protective multi-sensor set. Background Art

[0002] In many fields such as agricultural planting, industrial production, indoor environment monitoring, etc., it is necessary to monitor multiple environmental parameters such as temperature, humidity, light intensity, ultraviolet intensity, etc. in real time to guide relevant decision-making and control.

[0003] Traditional single sensors can only monitor a single parameter and cannot meet the needs of multi-parameter joint monitoring. At the same time, remote transmission of field data is also a key link in the environmental monitoring system.

[0004] In outdoor agricultural environments or industrial sites, long-term continuous collection of environmental parameters places high demands on the reliability of equipment. Drastic changes in natural environmental conditions such as temperature, humidity, and light, as well as harsh environmental factors such as moisture, dust, and vibration, may affect the normal operation of sensors. In addition, there is a lack of manual real-time monitoring on site, and once a fault occurs, it will not be discovered and handled in time.

[0005] For example, CN204731628U discloses a new type of smart agricultural collection control system, which includes a multi-sensor module and a control box for collecting agricultural environmental data, and the control box includes a power supply module for powering the system, a main controller for controlling and executing commands, an analog input module for converting analog signals into differential signals, an RS485 control relay controller module for restoring differential signals into TTL level signals, and a leakage main switch, wherein the multi-sensor module is connected to the analog input module, the analog input module is connected to the main controller, the main controller is connected to the RS485 control relay controller module, and the leakage main switch is connected to the power supply module. It has the characteristics of high real-time data transmission and long-term adaptation to harsh environments and stable operation.

[0006] CN210375194U discloses a multi-sensor based agricultural greenhouse environment monitoring system, including a cloud service management platform and an application client, a cloud service management platform and an Internet of Things host, wherein the Internet of Things host is equipped with a SIM card unit, an LED, a power supply unit, a battery interface, a TF card, an RS485 communication interface, a carbon dioxide sensor interface, an air temperature and humidity sensor interface, a light sensor interface, a DC-DC boost unit, a GPRS module, an RTC clock unit and a CPU. The monitoring system can adapt to harsh natural climate environments and various greenhouse environments, accurately collect and transmit environmental data, and reduce the labor intensity of staff.

[0007] Therefore, developing a high-reliability environmental monitoring device that integrates multiple sensor modules, realizes multi-parameter acquisition, and is able to work stably and persistently in harsh environments can greatly improve the convenience and efficiency of environmental monitoring, reduce system complexity and cost, and has important theoretical significance and application value. Utility Model Content

[0008] In response to the demand for reliability and convenience of monitoring systems in harsh environments, the utility model provides a data acquisition system with a protective multi-sensor set. The system integrates multiple key environmental data sensors in one, has multiple protection methods, can work stably and persistently in harsh environments, greatly improves the convenience and efficiency of environmental monitoring, reduces system complexity and cost, and can be widely used in industrial and agricultural production, environmental monitoring and other fields.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] A protective multi-sensor data acquisition system, comprising a power module, a main control module, a sensor module and an RS485 communication module;

[0011] The power supply module is used to supply power to the entire acquisition system and is respectively connected to the main control module and the sensor module circuit;

[0012] The main control module is used to control the operation of the system and connect the sensor module and the RS485 communication module;

[0013] The sensor module is used to collect environmental data and is an integrated module including a temperature sensor, a humidity sensor, a light intensity sensor and an ultraviolet intensity sensor;

[0014] The data acquisition system is connected to the host computer via the RS485 communication module for remote data transmission.

[0015] The utility model integrates four sensors, namely, temperature sensor, humidity sensor, light intensity sensor and ultraviolet intensity sensor, into one, realizing the "4-in-1" multi-parameter acquisition function. The Modbus communication protocol of RS485 bus can be quickly connected to the existing acquisition system, and can exchange data with the host computer as a slave to complete remote data transmission. The collector uses multiple protection methods and can work uninterruptedly in harsh environments. It can be widely used in industrial and agricultural production, environmental monitoring and other fields.

[0016] Preferably, the sensor module is connected to the main control module and the power module via the sensor power control module;

[0017] The sensor power control module is used to control the power switch of the sensor.

[0018] Preferably, when the main control module reads the sensor module data, the sensor power supply is turned on through the sensor power supply control module; at other times, the sensor power supply is turned off through the sensor power supply control module.

[0019] The main controller reads the sensor data at intervals. In order to reduce power consumption, the sensor power supply is turned on by the sensor power supply control module only during the data reading period. The sensor power supply is disconnected during other idle times.

[0020] Preferably, the ultraviolet intensity sensor is provided with an analog-to-digital conversion module for converting ultraviolet intensity analog data into digital signals. Since the ultraviolet sensor outputs an analog signal, an analog-to-digital conversion mode with an I2C communication function is added to convert the analog signal of the ultraviolet sensor into a digital signal and transmit it to the main controller through the I2C interface.

[0021] Preferably, a common mode inductor is provided between the RS485 communication module and the host computer to filter out common mode interference signals, thereby greatly increasing the communication distance and protecting the internal communication module from external impact signals, such as surge currents generated by lightning strikes and static electricity.

[0022] Preferably, the circuit connected to the power module for power supply and the circuit connected to the main control module for information transmission are isolated. The isolation can effectively suppress common-mode interference and differential-mode interference and prevent noise coupling.

[0023] The present invention also provides a protective multi-sensor data collector, comprising a closed shell with a control panel inside; the closed shell is formed by closing an upper cover, a middle shell and a lower cover; the closed shell is an aluminum alloy shell with an anodized outer surface;

[0024] The upper cover is provided with an optical lens, and the lower cover is provided with a vent hole, a temperature and humidity sensor cover and a communication connector;

[0025] The control panel includes the data acquisition system, which is installed in the closed cavity through a fixed bracket so that the light intensity sensor and the ultraviolet intensity sensor are aligned with the optical lens of the upper cover.

[0026] The data collector of the present invention is provided with multiple protection modes, and the data collection system integrating four sensors is protected in an aluminum alloy shell, and the surface of the shell is anodized to enhance corrosion resistance. The information collection of the light intensity sensor and the ultraviolet intensity sensor is realized through the optical lens of the upper cover, and the optical lens and the shell are bonded and sealed with silicone adhesive to effectively prevent rain and dust, isolate the sensor from direct contact with the external environment, and prevent the sensor from being damaged by the harsh environment.

[0027] Preferably, a sealing ring is provided at the closing part of the upper cover, the middle shell and the lower cover, so as to prevent water vapor from entering the cavity and causing damage to the collection system.

[0028] Further preferably, the housing of the data collector has a protection level of IP66. This strict protection can effectively prevent dust, rain, snow, etc. from entering the interior of the device and can withstand the influence of severe weather, thereby ensuring the normal operation of the device and being suitable for long-term outdoor use.

[0029] Preferably, the vent hole is a one-way breathable membrane, which ensures that moisture and dust outside the device cannot enter the inside of the device while the internal moisture can be discharged smoothly;

[0030] Preferably, the optical lens is a tempered glass with high light transmittance and low reflectivity. The sensor is aligned with this lens area, which can better gather the incident light and improve the measurement sensitivity.

[0031] Preferably, the fixing bracket is fixed to the inner wall of the middle shell through supporting structures on all sides; the bracket itself is designed with hard material and moderate quality, which can avoid vibration and displacement to the greatest extent.

[0032] The communication connector is a waterproof connector, ensuring that the instrument's waterproof rating reaches IP66.

[0033] The enclosed housing is provided with a desiccant bin for loading desiccant; the desiccant can effectively absorb the condensation of water vapor generated by temperature difference and other reasons inside the chassis, prevent water vapor from entering the internal circuit board and component area, and avoid corrosion and insulation failure caused by a humid environment. The desiccant bin adopts a detachable design, which is convenient for regular replacement of new desiccant.

[0034] The external power supply and communication cables of the data collector are shielded cables, which effectively isolate electromagnetic interference and electrostatic coupling from the outside world and improve the anti-interference ability. The shielding layer and the chassis are reliably grounded to form a Faraday cage, which provides all-round electromagnetic shielding protection for the internal circuit.

[0035] The input voltage range of the power module is 9-36VDC, and it has built-in power filter and voltage stabilization circuits. It covers the standard voltages used in most industrial occasions, such as 12V, 24V, etc., and has a certain fault tolerance. At the same time, it has built-in power filter and voltage stabilization circuits to effectively suppress power interference and surges.

[0036] Preferably, the power interface is equipped with reverse connection protection to prevent the user from accidentally connecting the power supply in reverse and causing damage to the device. The power supply part has overvoltage, overcurrent, undervoltage and overtemperature protection. When an abnormality occurs during operation, the power is immediately cut off to protect the device from damage.

[0037] After the optical lens is installed, the horizontal plane is higher than the upper cover to prevent water accumulation and dust deposition from affecting light collection. Preferably, the optical lens is sealed with sealant around to prevent dust and rain from entering the interior.

[0038] Preferably, the side wall of the upper cover is provided with mounting ears, which can be used for installation in a fixed place such as a guide rail or a wall.

[0039] Compared with the prior art, the utility model has the following beneficial effects:

[0040] (1) The data acquisition system of the utility model integrates four sensors, namely, temperature sensor, humidity sensor, light intensity sensor and ultraviolet intensity sensor, into one, realizing a "4-in-1" multi-parameter acquisition function, and has the characteristics of complete information acquisition and fast transmission speed.

[0041] (2) The data collector of the utility model has multiple protections and can work uninterruptedly in harsh environments. It can be widely used in industrial and agricultural production, environmental monitoring and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of the structure of the data acquisition system of the protective multi-sensor set in the embodiment.

[0043] Figure 2 1 is a circuit diagram of the connection between the sensor power supply control module and the sensor in the embodiment.

[0044] Figure 3 : is a circuit diagram of the connection between the ultraviolet intensity sensor and the main control module in the embodiment.

[0045] Figure 4 4 is a circuit diagram of the connection between the RS485 communication module and the host computer in the embodiment.

[0046] Figure 5 1 is an exploded view of the data collector in the embodiment, wherein 1 is an optical lens, 2 and 10 are fixing screws, 3 is an upper cover, 4 and 8 are sealing rings, 5 is a control board, 6 is a fixing bracket, 7 is a middle shell, 9 is a lower cover, 11 is a temperature and humidity sensor cover, and 12 is a waterproof communication connector.

[0047] Figure 6 Schematic diagram of the overall data acquisition device in the embodiment.

[0048] Figure 7 It is a front view of the data collector in the embodiment.

[0049] Figure 8 It is a front view of the data collector in the embodiment.

[0050] Fig. 9 It is a schematic diagram of the reverse side of the control board in the embodiment.

[0051] Fig.10 It is a front schematic diagram of the control panel in the embodiment.

[0052] Fig.11 It is the display interface of the host computer used by the collector to collect data in agricultural environments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the embodiments below. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Those skilled in the art who make modifications or equivalent substitutions based on their understanding of the technical solution of the utility model without departing from the spirit and scope of the technical solution of the utility model should be included in the protection scope of the utility model.

[0054] Example

[0055] like Figure 1 As shown, the utility model provides a protective multi-sensor data acquisition system, including a power module, a main control module, a sensor module and an RS485 communication module;

[0056] The power supply module is used to power the entire acquisition system and is connected to the main control module and the sensor module circuit respectively; the input voltage range of the power supply module is 9-36VDC, which is converted into a voltage of 5V by power supply module 1 and then converted into a voltage of 3.3V by power supply module 2.

[0057] The sensor module is connected to the main control module and the power module through the sensor power control module; the sensor power control module is used to control the power switch of the sensor. The circuit connection between the sensor power control module and the sensor is as follows: Figure 2 As shown, Q3 is a metal-oxide semiconductor field effect transistor, which is used as the main device for controlling the on and off of the power supply, and Q5 is a bipolar transistor, which assists in controlling the on and off of the power supply.

[0058] The main control module is used to control the operation of the system and connect the sensor module and the RS485 communication module. The main controller reads the sensor data at intervals. In order to reduce power consumption, the sensor power is only turned on by the sensor power control module during the data reading period, and the sensor power is disconnected during other idle time.

[0059] The sensor module is used to collect environmental data and is an integrated module including a temperature sensor, a humidity sensor, a light intensity sensor and an ultraviolet intensity sensor; wherein the temperature sensor and the humidity sensor are integrated temperature and humidity sensors.

[0060] The ultraviolet intensity sensor is provided with an analog-to-digital conversion module for converting the ultraviolet intensity analog data into a digital signal. Since the ultraviolet sensor outputs an analog signal, an analog-to-digital conversion mode with an I2C communication function is added to transmit the analog signal of the ultraviolet sensor to the main controller through the I2C interface. The circuit for the ultraviolet sensor to transmit data to the main control module is as follows: Figure 3 As shown in the figure, GUVA-S12SD and LED2 are UV sensors, and lmv358D is an analog-to-digital conversion module.

[0061] The data acquisition system is connected to the host computer via the RS485 communication module for remote data transmission. Figure 4 As shown in the figure, the main device is the RS485 level transceiver chip (MAX485ED, U4), which converts the TTL level into a differential balanced voltage with strong anti-interference ability and is used in the RS485 communication network. D1-D3 are TVS diodes, which are used to suppress transient overvoltage on the RS485 bus. When subjected to transient overvoltage impact, they will quickly break down and discharge the overvoltage to the ground.

[0062] A common-mode inductor (ACT45B-510-2P-TL003, L1) is provided between the RS485 communication module and the host computer to suppress the common-mode interference on the RS485 bus, thereby greatly increasing the communication distance and protecting the internal communication module from external impact signals, such as surge currents generated by lightning strikes and static electricity.

[0063] like Figure 5-8 As shown, a system integrating temperature sensor, humidity sensor, light intensity sensor and ultraviolet intensity sensor into one is formed into a control board 5 designed in a closed housing. Fig. 9 and Fig.10 As shown, it is locked on the fixing bracket 6 by fixing screws 2 and 10 to form a protective multi-sensor data collector, including a closed shell with a control panel inside; the closed shell is formed by closing the upper cover 3, the middle shell 7 and the lower cover 9; the closed shell is an aluminum alloy shell with anodized outer surface; sealing rings 4 and 8 are provided at the closing of the upper cover 3, the middle shell 7 and the lower cover 9. The upper cover 3 is provided with an optical lens 1, and the position is adjusted so that the light intensity sensor and the ultraviolet intensity sensor on the control panel 5 are aligned with the optical lens 1 of the upper cover.

[0064] like Figure 8-Figure 9 As shown, the optical lens 1 is a tempered glass with high light transmittance and low reflectivity. The sensor is aligned with this lens area, which can better gather the incident light and improve the measurement sensitivity. After the optical lens is installed, the horizontal plane is higher than the upper cover to prevent water accumulation and dust deposition from affecting light collection. Preferably, the optical lens is sealed with sealant on all sides to prevent dust and rain from entering the interior.

[0065] The side wall of the upper cover is provided with mounting ears, which can be used to install it in a fixed place such as a guide rail or a wall. The fixed bracket is fixed to the inner wall of the middle shell through the supporting structure on all sides; the bracket itself is designed with a hard material and moderate quality to minimize vibration and displacement. The lower cover 9 is provided with a vent hole of a one-way breathable membrane to ensure that the water vapor and dust outside the device cannot enter the interior of the device, while the internal water vapor can be discharged smoothly; it also includes a temperature and humidity sensor cover 11 and a waterproof communication connector 12;

[0066] The enclosed housing is provided with a desiccant bin for loading desiccant; the desiccant can effectively absorb the condensation of water vapor generated by temperature difference and other reasons inside the chassis, prevent water vapor from entering the internal circuit board and component area, and avoid corrosion and insulation failure caused by a humid environment. The desiccant bin adopts a detachable design, which is convenient for regular replacement of new desiccant.

[0067] The external power supply and communication cables of the above data loggers are shielded cables; they effectively isolate electromagnetic interference and electrostatic coupling from the outside world and improve anti-interference capabilities. The shielding layer and the chassis are reliably grounded to form a Faraday cage, which provides all-round electromagnetic shielding protection for the internal circuit. Anti-reverse connection protection is added to the power interface to prevent users from accidentally connecting the power supply in reverse and causing damage to the device. The power supply part has overvoltage, overcurrent, undervoltage and overtemperature protection. When abnormal operation occurs, the power is immediately cut off to protect the device from damage.

[0068] The data collector of the utility model is provided with multiple protection modes, and the data collection system integrating four sensors is protected in an aluminum alloy shell, and the surface of the shell is anodized to enhance the corrosion resistance. The optical lens of the upper cover realizes the information collection of the light intensity sensor and the ultraviolet intensity sensor. The optical lens and the shell are bonded and sealed with silicone adhesive to effectively prevent rain and dust, isolate the sensor from direct contact with the external environment, and prevent the sensor from being damaged by the harsh environment.

[0069] The above data collector is used to collect agricultural environmental data and crop growth data. The upper computer software interface of the server is as follows. The sampling interval can be set according to the needs. The data obtained is as follows Fig.11 As shown, the broken lines are air temperature, air humidity, light, UV intensity and UV index. You can view the trend of each parameter within the specified time range, and all historical data will be recorded and saved synchronously.

Claims

1. A data acquisition system for a protective multi-sensor set, characterized in that: Including power module, main control module, sensor module and RS485 communication module; The power supply module is used to supply power to the entire acquisition system and is respectively connected to the main control module and the sensor module circuit; The main control module is used to control the operation of the system and connect the sensor module and the RS485 communication module; The sensor module is used to collect environmental data and is an integrated module including a temperature sensor, a humidity sensor, a light intensity sensor and an ultraviolet intensity sensor; The data acquisition system is connected to the host computer via the RS485 communication module for remote data transmission.

2. The data acquisition system of the protective multi-sensor set according to claim 1, characterized in that: The sensor module is connected to the main control module and the power module through the sensor power control module; The sensor power control module is used to control the power switch of the sensor.

3. The data acquisition system of the protective multi-sensor set according to claim 1, characterized in that: The circuit connected to the power module for power supply and the circuit connected to the main control module for information transmission are isolated.

4. The data acquisition system of the protective multi-sensor set according to claim 1, characterized in that: The ultraviolet intensity sensor is provided with an analog-to-digital conversion module for converting ultraviolet intensity analog data into digital signals.

5. A data collector for a protective multi-sensor set, characterized in that: The invention comprises a closed shell with a control panel therein; the closed shell is formed by closing an upper cover, a middle shell and a lower cover; the closed shell is an aluminum alloy shell with an anodized outer surface; The upper cover is provided with an optical lens, and the lower cover is provided with a vent hole, a temperature and humidity sensor cover and a communication connector; The control panel comprises the data acquisition system according to any one of claims 1 to 4, and is installed in a closed cavity through a fixed bracket so that the light intensity sensor and the ultraviolet intensity sensor are aligned with the optical lens of the upper cover.

6. The protective multi-sensor data collector according to claim 5, characterized in that: A sealing ring is arranged at the closing position of the upper cover, the middle shell and the lower cover.

7. The protective multi-sensor data collector according to claim 5, characterized in that: The air permeable hole is a one-way air permeable film; the optical lens is a tempered glass with high light transmittance and low reflectivity.

8. The protective multi-sensor data collector according to claim 5, characterized in that: A desiccant bin for loading desiccant is provided in the closed shell; and the optical lens is arranged at a level higher than the upper cover after installation.

9. The protective multi-sensor data collector according to claim 5, characterized in that: The fixing bracket is fixed to the inner wall of the middle shell through supporting structures around it.

10. The protective multi-sensor data collector according to claim 5, characterized in that: The communication connector is a waterproof connector; The external power supply and communication cables of the data collector are shielded cables; The input voltage range of the power module is 9-36VDC, and a power filter and voltage stabilization circuit is built in.

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