College laboratory gas sample detection and transmission early warning device

Abstract

The college laboratory gas sample detection and transmission early warning device comprises a shell, a plurality of groups of detection interfaces are arranged on the shell, and the detection interfaces are used for being electrically connected with multiple types of gas sensors so as to detect the specific content of multiple types of gases in a laboratory, so that the concentration numerical value of microbial aerosol in the laboratory is fed back; the shell is provided with an adjusting knob and a trigger switch which are matched with each other, and the adjusting knob and the trigger switch are used for adjusting and controlling the on-off state of the detection interface, that is, when the adjusting knob is located in a corresponding detection area and the trigger switch is in a closed state, the detection interface enters an on state and is connected with a gas sensor for laboratory gas content detection.

Description

Technical field:

[0001] The utility model relates to a gas sample detection, transmission and early warning device for a university laboratory. Background technology:

[0002] Aerosol refers to a dispersed system formed by liquid or solid particles suspended in a gas medium. In this system, microorganisms such as bacteria, fungi and viruses combine with fine particles with an aerodynamic equivalent diameter of less than or equal to 2.5 microns to form PM2.5 microbial aerosol.

[0003] Many existing research reports point out that aerosols formed by PM2.5 microorganisms have become the main source of pollution in crowded places. Generally, the existing PM2.5 microbial aerosol detection mode is based on the principle of laser scattering to detect microbial aerosols in the environment. However, due to the large amount of impurities in the air environment, other types of tiny particles will affect the test results during the detection process, resulting in large errors in the test data. At the same time, the overall detection cost is too high, the bioaerosol sensor is complex to manufacture, and it is not easy to obtain accurate test data. Utility model content:

[0004] The embodiment of the utility model provides a gas sample detection, transmission and early warning device for university laboratories. The device has a reasonable structural design, is based on the integrated control function of a controller, and cooperates with various types of electrical components or functional equipment to accurately detect the specific content of various types of gases in the air, and feeds back the concentration value of microbial aerosol according to the specific content of the various types of gases, thereby avoiding the influence of errors or impurities in the laser detection process, and adopts a gas sensor with mature technology and low cost to replace an aerosol sensor with a complex structure and high cost, thereby reducing the overall detection cost and simplifying the overall detection process. At the same time, a double insurance detection mode of a trigger switch and an adjustment knob is adopted to ensure the acquisition of accurate and reliable laboratory detection data, thereby solving the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A gas sample detection, transmission and early warning device for university laboratories comprises a shell, on which are arranged a plurality of detection interfaces, wherein the detection interfaces are used to electrically connect multiple types of gas sensors to detect the specific contents of multiple types of gases in the laboratory, thereby feeding back the concentration values ​​of laboratory microbial aerosols;

[0007] The housing is provided with a matching adjustment knob and a trigger switch, which are used to adjust the on-off state of the control detection interface, that is, when the adjustment knob is in the corresponding detection area and the trigger switch is in the closed state, the detection interface enters the on state, and the gas sensor is connected to perform laboratory gas content detection;

[0008] A controller is provided in the shell, the adjustment knob is connected to the controller through a command input device, and the detection interface is connected to the controller through an AD converter; an audible and visual alarm, a wireless transceiver and a display screen are also provided on the shell, the audible and visual alarm is used to send out audible and visual alarm information when the gas content detected by the detection interface exceeds a threshold range; the wireless transceiver is used to establish wireless communication between the controller and the host computer, and remotely transmit the detected gas content to the host computer; the display screen is used to display the detected gas content in real time.

[0009] The model of the controller is STM32F103C8T6, and 64 pins are provided on the controller. The controller is connected to the instruction input device through pin No. 4, the controller is connected to the AD converter through pin No. 16, the controller is connected to the wireless transceiver through pins No. 20 and pin No. 21, the controller is connected to the sound and light alarm through pins No. 33 and pin No. 34, the controller is connected to the display screen through pin No. 38, and the controller is connected to the trigger switch through pin No. 40.

[0010] The model of the command input device is TLP290, and four pins are provided on the command input device. Pin No. 1 of the command input device is connected to the adjustment knob, a ninth resistor, a tenth resistor and a fourth capacitor are connected in parallel between pin No. 1 and pin No. 2 of the command input device, a fifth capacitor and an eighth resistor are connected in parallel between pin No. 3 and pin No. 4 of the command input device, and pin No. 3 of the command input device is connected to pin No. 4 of the controller.

[0011] The model of the AD converter is AD8551. There are 8 pins on the AD converter. The AD converter is connected to the sixteenth pin of the controller via the sixth pin, and the AD converter is connected to the detection interface via the third pin.

[0012] The model of the wireless transceiver is ESP8266, and 8 pins are arranged on the wireless transceiver. Pin No. 4 of the wireless transceiver is connected to pin No. 20 of the controller, and pin No. 8 of the wireless transceiver is connected to pin No. 21 of the controller.

[0013] The sound and light alarm includes a first electromagnetic relay and a second electromagnetic relay connected in parallel, a red indicator light is connected to the first electromagnetic relay, and a buzzer is connected to the second electromagnetic relay; the first electromagnetic relay is connected to pin 34 of the controller, and the second electromagnetic relay is connected to pin 33 of the controller.

[0014] Protective rubber strips are respectively provided at the four corners of the shell.

[0015] A plurality of insulating suction cups are evenly distributed on the back of the shell.

[0016] The utility model adopts the above structure, and uses a double insurance mode to adjust the on-off state of the control detection interface by adjusting the knob and the trigger switch, that is, when the adjusting knob is in the corresponding detection area and the trigger switch is in a closed state, the detection interface enters the on state, and the gas sensor is connected to detect the laboratory gas content; the detection interface is used to electrically connect multiple types of gas sensors to detect the specific content of multiple types of gases in the laboratory, so as to feedback the concentration value of the laboratory microbial aerosol; the sound and light alarm is used to send out sound and light alarm information when the gas content detected by the detection interface exceeds the threshold range; the wireless transceiver is used to establish wireless communication between the controller and the host computer, and the detected gas content is remotely transmitted to the host computer, which has the advantages of stability, efficiency, accuracy and practicality. Description of the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the back side.

[0019] Figure 3 This is the control principle diagram of the utility model.

[0020] Figure 4 This is the electrical schematic diagram of the controller of the utility model.

[0021] Figure 5 The electrical schematic diagram of the command input device of the utility model.

[0022] Figure 6 The electrical schematic diagram of the AD converter of the utility model

[0023] Figure 7 This is an electrical schematic diagram of the wireless transceiver of the utility model.

[0024] Figure 8 The utility model is an electrical schematic diagram of the sound and light alarm.

[0025] In the figure, 1. shell, 2. detection interface, 3. protective rubber strip, 4. insulating suction cup. Specific implementation method:

[0026] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0027] like Figure 1-8As shown in the figure, the university laboratory gas sample detection transmission warning device includes a shell 1, and a plurality of detection interfaces 2 are provided on the shell 1. The detection interfaces 2 are used to electrically connect multiple types of gas sensors to detect the specific content of multiple types of gases in the laboratory, thereby feeding back the concentration value of the laboratory microbial aerosol;

[0028] The housing 1 is provided with a matching adjusting knob and a trigger switch, which are used to adjust the on-off state of the control detection interface, that is, when the adjusting knob is in the corresponding detection area and the trigger switch is in the closed state, the detection interface enters the on state, and the gas sensor is connected to perform laboratory gas content detection;

[0029] A controller is provided in the shell, the adjustment knob is connected to the controller through a command input device, and the detection interface is connected to the controller through an AD converter; an audible and visual alarm, a wireless transceiver and a display screen are also provided on the shell, the audible and visual alarm is used to send out audible and visual alarm information when the gas content detected by the detection interface exceeds a threshold range; the wireless transceiver is used to establish wireless communication between the controller and the host computer, and remotely transmit the detected gas content to the host computer; the display screen is used to display the detected gas content in real time.

[0030] The model of the controller is STM32F103C8T6, and 64 pins are provided on the controller. The controller is connected to the instruction input device through pin No. 4, the controller is connected to the AD converter through pin No. 16, the controller is connected to the wireless transceiver through pins No. 20 and pin No. 21, the controller is connected to the sound and light alarm through pins No. 33 and pin No. 34, the controller is connected to the display screen through pin No. 38, and the controller is connected to the trigger switch through pin No. 40.

[0031] The model of the command input device is TLP290, and four pins are provided on the command input device. Pin No. 1 of the command input device is connected to the adjustment knob, a ninth resistor, a tenth resistor and a fourth capacitor are connected in parallel between pin No. 1 and pin No. 2 of the command input device, a fifth capacitor and an eighth resistor are connected in parallel between pin No. 3 and pin No. 4 of the command input device, and pin No. 3 of the command input device is connected to pin No. 4 of the controller.

[0032] The model of the AD converter is AD8551. There are 8 pins on the AD converter. The AD converter is connected to the sixteenth pin of the controller via the sixth pin, and the AD converter is connected to the detection interface via the third pin.

[0033] The model of the wireless transceiver is ESP8266, and 8 pins are arranged on the wireless transceiver. Pin No. 4 of the wireless transceiver is connected to pin No. 20 of the controller, and pin No. 8 of the wireless transceiver is connected to pin No. 21 of the controller.

[0034] The sound and light alarm includes a first electromagnetic relay and a second electromagnetic relay connected in parallel, a red indicator light is connected to the first electromagnetic relay, and a buzzer is connected to the second electromagnetic relay; the first electromagnetic relay is connected to pin 34 of the controller, and the second electromagnetic relay is connected to pin 33 of the controller.

[0035] Protective rubber strips 3 are respectively provided at the four corners of the housing 1 .

[0036] A plurality of insulating suction cups 4 are evenly distributed on the back side of the housing 1 .

[0037] The working principle of the university laboratory gas sample detection, transmission and early warning device in the embodiment of the utility model is: based on the integrated control function of the controller, in conjunction with various types of electrical components or functional equipment, it can accurately detect the specific content of various types of gases in the air, and feedback the concentration value of microbial aerosol according to the specific content of various types of gases, avoiding the influence of errors or impurities in the laser detection process, and using mature and low-cost gas sensors to replace complex and expensive aerosol sensors, thereby reducing the overall detection cost and simplifying the overall detection process. At the same time, a double insurance detection mode of a trigger switch and an adjustment knob is adopted to ensure the acquisition of accurate and reliable laboratory detection data.

[0038] Since the existing method of directly detecting microbial aerosols has too large an error, the present application adopts the method of detecting the content of multiple types of gases to feedback the specific concentration value of microbial aerosols. At the same time, the present application adopts a double insurance detection method of trigger switch and adjustment knob, which is safer and more reliable than the direct detection method, reduces errors and avoids misoperation.

[0039] The detection interface of the present application can only be connected to the gas sensor for real-time detection when the adjustment knob is turned to the specified position and the trigger switch is in the closed state.

[0040] In the overall scheme, it mainly includes a shell 1, on which are provided a plurality of detection interfaces 2, the detection interfaces 2 being used to electrically connect various types of gas sensors to detect the specific contents of various types of gases in the laboratory, thereby feeding back the concentration values ​​of laboratory microbial aerosols;

[0041] The housing is provided with a matching adjustment knob and a trigger switch, which are used to adjust the on-off state of the control detection interface, that is, when the adjustment knob is in the corresponding detection area and the trigger switch is in the closed state, the detection interface enters the on state, and the gas sensor is connected to perform laboratory gas content detection;

[0042] A controller is provided in the shell 1, the adjustment knob is connected to the controller through a command input device, and the detection interface is connected to the controller through an AD converter; an audible and visual alarm, a wireless transceiver and a display screen are also provided on the shell 1, the audible and visual alarm is used to send out audible and visual alarm information when the gas content detected by the detection interface exceeds a threshold range; the wireless transceiver is used to establish wireless communication between the controller and the host computer, and remotely transmit the detected gas content to the host computer; the display screen is used to display the detected gas content in real time.

[0043] The core component is a controller, whose model is STM32F103C8T6. The controller is provided with 64 pins. The controller is connected to the instruction input device through pin 4, the controller is connected to the AD converter through pin 16, the controller is connected to the wireless transceiver through pins 20 and 21, the controller is connected to the sound and light alarm through pins 33 and 34, the controller is connected to the display screen through pin 38, and the controller is connected to the trigger switch through pin 40, thereby forming an overall hardware circuit. The above-mentioned overall hardware is relied on to realize the detection of the content of multiple types of gases, thereby feeding back the concentration value of the laboratory's microbial aerosol.

[0044] In actual use, the adjustment knob is equally divided into multiple detection areas, each detection area is a corresponding detection gas. When the adjustment knob is rotated to the corresponding detection area, the trigger switch of the corresponding detection gas is closed at the same time. At this time, the corresponding detection interface is in an on state. By connecting the corresponding gas sensor, the corresponding gas content in the laboratory can be accurately detected. The gas content detected by the AD converter is converted into a data type recognizable by the controller, and the obtained gas content is judged. Then, the concentration value of the microbial aerosol in the laboratory is accurately displayed on the display screen and compared with the pre-set threshold range. When the threshold range is exceeded, the sound and light alarm is activated to send out sound and light alarm information to remind the staff that the microbial aerosol content in the laboratory exceeds the standard.

[0045] Furthermore, the obtained microbial aerosol concentration parameters can also be remotely transmitted to a host computer via a wireless transceiver, facilitating remote acquisition of data.

[0046] Preferably, the model of the command input device is TLP290, and four pins are provided on the command input device, pin No. 1 of the command input device is connected to the adjustment knob, a ninth resistor, a tenth resistor and a fourth capacitor are connected in parallel between pin No. 1 and pin No. 2 of the command input device, a fifth capacitor and an eighth resistor are connected in parallel between pin No. 3 and pin No. 4 of the command input device, and pin No. 3 of the command input device is connected to pin No. 4 of the controller. Different detection modes can be set by adjusting the action of the knob to suit a variety of different application scenarios.

[0047] It should be noted that protective rubber strips are provided at the four corners of the shell to improve the overall stability of the entire device; there are multiple insulating suction cups on the back of the shell, and the entire device can be attached to multiple locations in the laboratory for accurate detection and early warning, which is convenient for staff to use.

[0048] To sum up, the university laboratory gas sample detection, transmission and early warning device in the embodiment of the utility model is based on the integrated control function of the controller, and cooperates with various types of electrical components or functional equipment to accurately detect the specific content of various types of gases in the air, and feedback the concentration value of microbial aerosol according to the specific content of various types of gases, thereby avoiding the influence of errors or impurities in the laser detection process, and using mature and low-cost gas sensors to replace complex and expensive aerosol sensors, thereby reducing the overall detection cost and simplifying the overall detection process. At the same time, a double insurance detection mode of a trigger switch and an adjustment knob is adopted to ensure the acquisition of accurate and reliable laboratory detection data.

[0049] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0050] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A gas sample detection, transmission and early warning device for university laboratories, characterized by: It comprises a shell, on which are arranged a plurality of detection interfaces, wherein the detection interfaces are used to electrically connect to various types of gas sensors to detect the specific contents of various types of gases in the laboratory, thereby feeding back the concentration values ​​of laboratory microbial aerosols; The housing is provided with a matching adjustment knob and a trigger switch, which are used to adjust the on-off state of the control detection interface, that is, when the adjustment knob is in the corresponding detection area and the trigger switch is in the closed state, the detection interface enters the on state, and the gas sensor is connected to perform laboratory gas content detection; A controller is provided in the shell, the adjustment knob is connected to the controller through a command input device, and the detection interface is connected to the controller through an AD converter; an audible and visual alarm, a wireless transceiver and a display screen are also provided on the shell, the audible and visual alarm is used to send out audible and visual alarm information when the gas content detected by the detection interface exceeds a threshold range; the wireless transceiver is used to establish wireless communication between the controller and the host computer, and remotely transmit the detected gas content to the host computer; the display screen is used to display the detected gas content in real time.

2. The university laboratory gas sample detection transmission early warning device according to claim 1 is characterized by: The model of the controller is STM32F103C8T6, and 64 pins are provided on the controller. The controller is connected to the instruction input device through pin No. 4, the controller is connected to the AD converter through pin No. 16, the controller is connected to the wireless transceiver through pins No. 20 and pin No. 21, the controller is connected to the sound and light alarm through pins No. 33 and pin No. 34, the controller is connected to the display screen through pin No. 38, and the controller is connected to the trigger switch through pin No.

40.

3. The university laboratory gas sample detection transmission early warning device according to claim 2 is characterized by: The model of the command input device is TLP290, and four pins are provided on the command input device. Pin No. 1 of the command input device is connected to the adjustment knob, a ninth resistor, a tenth resistor and a fourth capacitor are connected in parallel between pin No. 1 and pin No. 2 of the command input device, a fifth capacitor and an eighth resistor are connected in parallel between pin No. 3 and pin No. 4 of the command input device, and pin No. 3 of the command input device is connected to pin No. 4 of the controller.

4. The university laboratory gas sample detection transmission early warning device according to claim 2 is characterized by: The model of the AD converter is AD8551. There are 8 pins on the AD converter. The AD converter is connected to the sixteenth pin of the controller via the sixth pin, and the AD converter is connected to the detection interface via the third pin.

5. The university laboratory gas sample detection, transmission and early warning device according to claim 2 is characterized by: The model of the wireless transceiver is ESP8266, and 8 pins are arranged on the wireless transceiver. Pin No. 4 of the wireless transceiver is connected to pin No. 20 of the controller, and pin No. 8 of the wireless transceiver is connected to pin No. 21 of the controller.

6. The university laboratory gas sample detection transmission early warning device according to claim 2 is characterized by: The sound and light alarm includes a first electromagnetic relay and a second electromagnetic relay connected in parallel, a red indicator light is connected to the first electromagnetic relay, and a buzzer is connected to the second electromagnetic relay; the first electromagnetic relay is connected to pin 34 of the controller, and the second electromagnetic relay is connected to pin 33 of the controller.

7. The university laboratory gas sample detection, transmission and early warning device according to claim 1 is characterized by: Protective rubber strips are respectively provided at the four corners of the shell.

8. The university laboratory gas sample detection, transmission and early warning device according to claim 1 is characterized by: A plurality of insulating suction cups are evenly distributed on the back of the shell.

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