Industrial VOC waste gas detection device

Abstract

The utility model discloses an industrial VOC (volatile organic compound) waste gas detection device which comprises a sensor array, a controller and an audible and visual alarm. The sensor array comprises a plurality of VOC sensors; the controller is connected with the plurality of VOC sensors of the sensor array; and the audible and visual alarm is connected with the controller. According to the system, the sensor array is adopted and composed of the multiple VOC sensors, the system can be arranged in different production workshop environments, the monitoring accuracy is improved, and the reliability of the multiple VOC sensors is higher. And the audible and visual alarm is combined, so that the functionality of the industrial VOC waste gas detection device is increased, and workshop management personnel are immediately notified to carry out treatment work and the like in an audible and visual alarm mode.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas monitoring, in particular to an industrial VOC waste gas detection device. Background Art

[0002] Waste and exhaust gases emitted by factories, mines, and production workshops cause significant air pollution, with VOCs being the primary component. VOCs are a complex gas composition composed primarily of hydrocarbons, halogenated hydrocarbons, oxygenated hydrocarbons, and nitrogenated hydrocarbons, including benzene series, organic oxides, freons, organic ketones, amines, alcohols, ethers, esters, acids, and petroleum hydrocarbon compounds. Most VOCs have a pungent odor or foul taste and are penetrating, volatile, and fat-soluble. They are toxic, irritating, and potentially carcinogenic and teratogenic. To effectively prevent and control VOC pollution, testing for VOC pollution is one of the most effective methods.

[0003] Chinese utility model patent publication number CN207662867U discloses a VOC sensor device, which includes: a VOC sensor, a sensor detection circuit, and a controller. The VOC sensor is connected to the sensor detection circuit, and the VOC sensor is connected to the controller. The VOC working sensor detects the gas to be measured to obtain a first gas parameter. The VOC calibration sensor periodically detects the air to be measured. The sensor detection circuit drives the VOC calibration sensor to periodically detect the air to be measured to obtain a second gas parameter. The first gas parameter is compared with the second gas parameter to obtain a deviation value. If the deviation value does not exceed a preset deviation threshold, the controller calibrates the working sensor parameters of the VOC working sensor.

[0004] At present, existing VOC detection devices can only monitor the changes in VOC values in the air. The equipment functions have limitations and need to be developed and innovated. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides an industrial VOC waste gas detection device.

[0006] In order to solve the above problems, the present invention is implemented according to the following technical solutions:

[0007] The utility model provides an industrial VOC waste gas detection device, comprising:

[0008] a sensor array, the sensor array comprising a plurality of VOC sensors;

[0009] a controller connected to the plurality of VOC sensors of the sensor array;

[0010] An audible and visual alarm is connected to the controller.

[0011] Preferably, the industrial VOC waste gas detection device further includes:

[0012] A button control panel connected to the controller;

[0013] An electric valve, which is installed on an exhaust gas exhaust pipe in a production workshop and is used to adjust the exhaust gas emission volume of the production workshop;

[0014] Wherein, the controller is also connected to the electric valve, and the button control panel is used to control the opening of the electric valve.

[0015] Preferably, the industrial VOC waste gas detection device further includes:

[0016] A liquid crystal display panel is connected to the controller.

[0017] Preferably, the industrial VOC waste gas detection device further includes:

[0018] a wireless communicator connected to the controller;

[0019] The wireless communicator is used to send the VOC concentration value of the sensor array to an external device, and is also used to communicate and interact with an external host computer.

[0020] Preferably, the controller is a single chip microcomputer of the STM32F407ZGT6 model.

[0021] Preferably, the VOC sensor is a photoionization gas sensor PID.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The utility model discloses an industrial VOC waste gas detection device, comprising a sensor array, a controller, and an audible and visual alarm. The sensor array comprises a plurality of VOC sensors; the controller is connected to the plurality of VOC sensors in the sensor array; and the audible and visual alarm is connected to the controller.

[0024] This system utilizes a sensor array consisting of multiple VOC sensors that can be deployed in various production workshop environments, improving monitoring accuracy and increasing reliability. The combination of an audible and visual alarm increases the functionality of industrial VOC waste gas detection devices, instantly notifying workshop managers to initiate remediation work through audible and visual alarms.

[0025] This industrial OVC waste gas detection device is suitable for functional departments to conduct continuous online real-time monitoring of VOC in waste gas and tail gas of mining enterprises. It can detect VOC pollution accurately, promptly and effectively, and notify the implementation of VOC treatment work through sound and light alarms, so as to curb and eliminate excessive and illegal VOC emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of an industrial VOC waste gas detection device of the utility model;

[0028] Figure 2 This is a connection circuit diagram of the controller and the VOC sensor of the utility model. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0030] like Figures 1 and 2 As shown, the preferred structure of an industrial VOC waste gas detection device described in the present invention.

[0031] like Figure 1 As shown, the present invention provides an industrial VOC waste gas detection device, comprising a sensor array, a controller, and an audible and visual alarm. The sensor array comprises multiple VOC sensors; the controller is connected to the multiple VOC sensors in the sensor array; and the audible and visual alarm is connected to the controller.

[0032] This system utilizes a sensor array, consisting of multiple VOC sensors that can be deployed in various production workshop environments. This improves monitoring accuracy and the reliability of multiple VOC sensors. Using multiple sensors also increases the system's fault tolerance. If one sensor malfunctions or fails, the remaining sensors can still provide data, ensuring continued system operation and reliability.

[0033] The combination of an audible and visual alarm increases the functionality of industrial VOC waste gas detection devices, allowing immediate notification to workshop managers to initiate remediation work. The audible and visual alarm conveys alarm information in an intuitive and clear manner, ensuring that workshop managers receive the alert immediately and take necessary action.

[0034] This industrial OVC waste gas detection device is suitable for functional departments to conduct continuous online real-time monitoring of VOC in waste gas and tail gas of mining enterprises. It can detect VOC pollution accurately, promptly and effectively, and notify the implementation of VOC treatment work through sound and light alarms, so as to curb and eliminate excessive and illegal VOC emissions.

[0035] In a specific implementation, the controller is a single chip microcomputer of the STM32F407ZGT6 model. The VOC sensor is a photoionization gas sensor PID.

[0036] In this paper, the British Alpha photoionization gas sensor PID-A1 is used for VOC detection. The PID-A1 sensor is a highly sensitive and versatile detector with a resolution of 1 ppb and a sensitivity exceeding 20 mV / ppb. It can detect volatile organic compounds and other toxic gases from 10 ppb to high concentrations of 10,000 ppm.

[0037] The PID-A1 gas sensor has a circular body with a diameter of 20mm and a height of 17.6mm. Three pins are located at the bottom of the body. The sensor is compact, requires minimal space, and is easy to install. The sensor has three pins: Pin 1 connects to the positive terminal of a 3.3V DC power supply, and Pin 3 connects to the negative terminal of a 3.3V power supply. Pin 2 is the sensor's signal output, outputting a 2.5-3.2V DC voltage. This DC voltage is proportional to the VOC concentration measured by the sensor; that is, the higher the VOC concentration in the exhaust gas, the higher the voltage output at Pin 2. The output voltage is fed through a 2kΩ resistor into the microcontroller data acquisition and processing system. The system calculates the measured VOC concentration based on the voltage. The VOC gas sensor signal is acquired using the ADC within the STM32F407ZGT6 microcontroller. STM32F407ZGT6 has 3 ADCs, each with 12-bit, 10-bit, 8-bit, and 6-bit options. Each ADC has 16 external channels. Select 12-bit ADC1 as the analog-to-digital converter for data acquisition. Figure 2 As shown in the figure, the output voltage of the VOC sensor pin 2 is transmitted to the PB0 pin of the STM32F407ZGT6 microcontroller through a 2kΩ resistor.

[0038] like Figure 1 As shown, in a preferred embodiment, the industrial VOC waste gas detection device further includes:

[0039] A button control panel connected to the controller;

[0040] An electric valve, which is installed on an exhaust gas exhaust pipe in a production workshop and is used to adjust the exhaust gas emission volume of the production workshop;

[0041] Wherein, the controller is also connected to the electric valve, and the button control panel is used to control the opening of the electric valve.

[0042] In a preferred embodiment, the controller can also be connected to the VOC treatment equipment in the production workshop, so that the controller can automatically control the operation of the VOC treatment equipment according to the VOC concentration value, realizing intelligent control. In a preferred embodiment, the key control panel can also control the VOC treatment equipment connected to the controller.

[0043] like Figure 1 As shown, in a preferred embodiment, the industrial VOC waste gas detection device further includes:

[0044] A liquid crystal display panel is connected to the controller.

[0045] In one specific implementation, a 0.96-inch OLED liquid crystal display produced by RISMY is used. The PB8 and PB9 pins of the STM32F407 chip are connected to the CLK and SDA pins of the liquid crystal display, respectively. The PB8 and PB9 pins of the STM32F407 chip are configured to multiplex the IIC function. The STM32F407 microcontroller sends corresponding commands to the liquid crystal display, which accurately displays relevant information collected by the STM32F407 microcontroller, such as the VOC concentration value, valve switch status, VOC treatment equipment operating status, and the manual / automatic state of the VOC monitoring system.

[0046] like Figure 1 As shown, in a preferred embodiment, the industrial VOC waste gas detection device further includes:

[0047] a wireless communicator connected to the controller;

[0048] The wireless communicator is used to send the VOC concentration value of the sensor array to an external device, and is also used to communicate and interact with an external host computer.

[0049] In one specific implementation, the wireless communicator utilizes the YYROBOT-SIM900A module, a high-performance, cost-effective, industrial-grade GSM / GPRS module. This module utilizes the SIM900A industrial-grade GSM / GPRS module from SIM-COM, operating at a dual-band 900 / 1800 MHz frequency. It enables low-power transmission of voice, SMS, MMS, data, and fax messages. The module supports TTL interface control, enabling convenient GSM / GPRS functionality using a single-chip microcomputer. TTL voltage levels support both 3.3V and 5V systems.

[0050] Specifically, the USART1 port of the STM32F407 microcontroller, that is, the PA9 and PA10 pins of the STM32F407 microcontroller are respectively connected to the RX and TX ports of the YYROBOT-SIM900A, and the STM32F407 microcontroller sends corresponding AT commands to the YY-ROBOT-SIM900A to realize the GPRS function of the YYROBOT-SIM900A template, that is, the VOC concentration value and the operating status of the VOC treatment equipment collected by the STM32F407 microcontroller are transmitted to the functional department or the set host computer via the YYROBOT-SIM900A template, and the control instructions from the host computer are received through the YYROBOT-SIM900A template to realize corresponding control of the electric valve or the VOC treatment equipment connected to the controller in the production workshop.

[0051] The industrial VOC waste gas detection device of this patent continuously and in real time detects the waste gas and tail gas emitted by factories and mines through VOC sensors, and converts the concentration of VOC in the waste gas and tail gas into a corresponding analog voltage signal. The voltage signal is collected by the controller, converted into a digital signal for storage, and then the signal value is converted into a VOC concentration value, which is then displayed on the LCD screen. At the same time, the collected VOC (voltage) value is judged. If the VOC concentration value is too large, an audible and visual alarm is activated, and the monitoring personnel or the upper computer of the functional department are notified through a wireless communicator. The electric valve that adjusts the exhaust gas emission can be automatically controlled, or it can be controlled by on-site personnel through a key control panel to reduce the emission of exhaust gas and tail gas. At the same time, the VOC treatment equipment is turned on to eliminate the VOC in the exhaust gas and tail gas. The adjustment of the electric valve and the start and stop of the VOC treatment equipment can also be determined by the controller based on the collected VOC concentration value and handed over to the software program for judgment. The program adjusts the valve and starts and stops the VOC treatment equipment, thereby realizing the fully automatic operation function of the system.

[0052] For other structures of the industrial VOC waste gas detection device described in this embodiment, refer to the prior art.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An industrial VOC waste gas detection device, characterized in that: include: a sensor array, the sensor array comprising a plurality of VOC sensors; a controller connected to the plurality of VOC sensors of the sensor array; An audible and visual alarm is connected to the controller.

2. The industrial VOC waste gas detection device according to claim 1, characterized in that: Also includes: A button control panel connected to the controller; An electric valve, which is installed on an exhaust gas exhaust pipe in a production workshop and is used to adjust the exhaust gas emission volume of the production workshop; Wherein, the controller is also connected to the electric valve, and the button control panel is used to control the opening of the electric valve.

3. The industrial VOC waste gas detection device according to claim 1, characterized in that: Also includes: A liquid crystal display panel is connected to the controller.

4. The industrial VOC waste gas detection device according to claim 1, characterized in that: Also includes: a wireless communicator connected to the controller; The wireless communicator is used to send the VOC concentration value of the sensor array to an external device, and is also used to communicate and interact with an external host computer.

5. An industrial VOC waste gas detection device according to any one of claims 1 to 4, characterized in that: The controller is a single chip microcomputer of the STM32F407ZGT6 model.

6. An industrial VOC waste gas detection device according to any one of claims 1 to 4, characterized in that: The VOC sensor is a photoionization gas sensor PID.

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