Environmental protection monitoring equipment

Abstract

The utility model discloses an environmental protection monitoring device, comprising a housing; a partition plate for dividing an inner cavity into a first cavity and a second cavity is transversely arranged in the inner cavity of the shell; a first air vent and a second air vent are respectively formed in the coaming opposite to the first cavity and the second cavity; the detection module comprises a first detection module and a second detection module which are respectively arranged in the first cavity and the second cavity; the isolation component is arranged in the second cavity, and the isolation component comprises a flexible isolation film and an annular plate; the memory metal spring can be switched between an extension state and a retraction state based on the temperature change, and the memory metal spring drives the annular plate to move to the bottom of the second cavity by switching to the retraction state so as to isolate the second detection module; the memory metal spring is formed by spirally bending a memory alloy pipe, a first metal heating wire is arranged in the memory alloy pipe in a penetrating mode, and the memory alloy pipe is heated by electrifying the first metal heating wire so that the memory metal spring can be switched to the retraction state.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to an environmental protection monitoring device. Background Art

[0002] In the prior art, the monitoring devices for monitoring air quality usually include a housing, a circuit board arranged in the housing, and various types of sensors electrically connected to the circuit board. Ventilation openings are formed in the side wall of the housing so that the outside air can enter the inside of the housing through the ventilation openings. The various types of sensors are used to detect various parameters of the air entering the inside of the housing, for example, harmful gases and their contents in the air, the content of particulate matter in the air, and the dryness and humidity of the air.

[0003] The above-mentioned monitoring devices in the prior art have the following defects when in use:

[0004] Some types of sensors are prone to cause short circuits or open circuits in the circuit system in an air environment with high air humidity, while some types of sensors can still operate normally in an environment with high air humidity. For example, the sensors for detecting particulate matter and the sensors for detecting sulfides cannot operate normally and are prone to cause short circuits or open circuits in the circuit system when encountering rain or being exposed to an environment with high humidity, while the sensors for detecting the dryness and humidity of the air can still operate normally and will not cause short circuits or open circuits when encountering rain or being exposed to an environment with high humidity.

[0005] To overcome the above defects, technicians classify the sensors into two categories based on whether they are affected by air humidity, that is, the first sensors not affected by humidity and the second sensors affected by humidity. The first sensors and the second sensors are respectively arranged in two inner cavities of the housing. And, valves are arranged at all ventilation openings corresponding to the second sensors. In a rainy environment or an environment with high air humidity, the ventilation openings are closed by driving all the valves synchronously to isolate the inner cavity where the second sensors are located from the outside air, so as to prevent the second sensors from being exposed to an environment with high humidity.

[0006] However, the above structure capable of isolating the inner cavity where the second sensors are located from the outside air is difficult to be applied to monitoring devices with relatively small external dimensions. The specific reasons are as follows:

[0007] On the one hand, a relatively complex transmission structure needs to be configured to make the valves move synchronously. On the other hand, when a motor is selected as the actuator, a relatively large installation space needs to be reserved inside or outside the housing for the motor. Summary of the Utility Model

[0008] In view of the above technical problems existing in the prior art, the utility model provides an environmental protection monitoring device.

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

[0010] An environmental monitoring device, comprising:

[0011] A shell, wherein an inner cavity is surrounded by a top plate, a bottom plate, and a surrounding plate between the top plate and the bottom plate; a partition is horizontally placed in the inner cavity, and the partition divides the inner cavity into a first cavity located at the top and a second cavity located at the bottom; and a plurality of first vents and a plurality of second vents arranged in a circumferential direction are respectively provided on the surrounding plates opposite to the first cavity and the second cavity;

[0012] A detection module, comprising a first detection module and a second detection module respectively arranged in the first cavity and the second cavity; the first detection module comprises a first sensor, and the second detection module comprises a second sensor;

[0013] an isolation component, which is disposed in the second cavity, the isolation component comprising a flexible isolation membrane and a ring plate, the inner side of the flexible isolation membrane is connected to the lower plate surface of the partition, the ring plate is attached to the outer side of the flexible isolation membrane, the ring plate can move axially along the second cavity, when the ring plate moves to the top of the second cavity, air can enter the second cavity through the second vent, when the ring plate moves to the bottom of the second cavity, the flexible isolation membrane covers the second detection module to isolate it from the second vent;

[0014] A memory metal spring capable of switching between an extended state and a retracted state based on temperature changes, wherein the memory metal spring drives the ring plate to move to the top of the second cavity by switching to the extended state, and drives the ring plate to move to the bottom of the second cavity by switching to the retracted state; wherein:

[0015] The memory metal spring is made of a spirally bent memory alloy tube, a first metal heating wire is passed through the memory alloy tube, and the memory alloy tube is heated by energizing the first metal heating wire so that the memory metal spring switches to a retracted state.

[0016] Preferably, the first detection module also includes a first circuit board, the first circuit board is fixed on the upper surface of the partition, and the first sensor is arranged on the first circuit board; the second detection module also includes a second circuit board, the second circuit board is fixed on the upper surface of the base plate, and the second sensor is arranged on the second circuit board.

[0017] Preferably, a first air duct is defined in the first cavity, and the first sensor is located in the first air duct; and a second air duct is defined in the second cavity, and the second sensor is located in the second air duct.

[0018] Preferably, a plurality of the first air ducts are circumferentially arranged around the first chamber, and one of the first sensors is arranged in each of the first air ducts. A plurality of second air ducts are circumferentially arranged around the second chamber, and one of the second sensors is arranged in each of the second air ducts.

[0019] Preferably, an air duct extends from the middle of the bottom plate into the inner cavity of the housing. A circumferentially arranged first suction hole is formed in a region of the pipe wall of the air duct corresponding to the first chamber, and a circumferentially arranged second suction hole is formed in a region of the pipe wall of the air duct corresponding to the second chamber; A fan is installed in the air duct.

[0020] Preferably, a second metal heating wire is arranged on the upper plate surface of the bottom plate or on the flexible isolation film, and the second metal heating wire is used to heat and dry the second sensor.

[0021] The beneficial effects of the environmental monitoring device provided by the present invention are:

[0022] The present invention uses a shape memory alloy spring to drive the isolation component to isolate the second sensor from the outside air. The structure of the shape memory alloy spring is simple and occupies less space. Therefore, the environmental monitoring device can be designed smaller. Description of the Drawings

[0023] In the drawings, which are not necessarily to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The drawings generally illustrate various embodiments by way of example and not limitation, and are used together with the description and the claims to explain the embodiments of the present invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be an exhaustive or exclusive embodiment of the device or method.

[0024] Figure 1 A main cross-sectional view of the environmental monitoring device provided by the embodiment of the present invention (the shape memory alloy spring is in the extended state).

[0025] Figure 2 A main cross-sectional view of the environmental monitoring device provided by the embodiment of the present invention (the shape memory alloy spring is in the retracted state).

[0026] Figure 3 A three-dimensional structural schematic diagram of the isolation component in the environmental monitoring device provided by the embodiment of the present invention.

[0027] Figure 4 A three-dimensional structural schematic diagram of the shape memory alloy spring in the extended state in the environmental monitoring device provided by the embodiment of the present invention.

[0028] Figure 5 Schematic three-dimensional structure diagram of the shape memory alloy spring in the extended state in the environmental monitoring device provided by the embodiment of the present utility model.

[0029] Reference numerals:

[0030] 10 - housing; 11 - top plate; 12 - bottom plate; 13 - enclosing plate; 131 - first ventilation opening; 132 - second ventilation opening; 14 - partition; 15 - first chamber; 16 - second chamber; 21 - first detection module; 211 - first sensor; 212 - first circuit board; 22 - second detection module; 221 - second sensor; 222 - second circuit board; 30 - isolation component; 31 - flexible isolation film; 32 - ring plate; 40 - shape memory alloy spring; 41 - shape memory alloy tube; 42 - first metal heating wire; 50 - air duct; 51 - first suction hole; 52 - second suction hole; 60 - fan. Detailed implementation manners

[0031] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0032] In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed descriptions of known functions and known components are omitted in the present utility model.

[0033] As Figures 1 to 5 shown, the embodiment of the present utility model discloses an environmental monitoring device, which includes: a housing 10, a detection module, an isolation component 30 and a shape memory alloy spring 40.

[0034] The housing 10 includes a top plate 11, a bottom plate 12 and an enclosing plate 13 between the top plate 11 and the bottom plate 12. The top plate 11, the bottom plate 12 and the enclosing plate 13 enclose an inner cavity, and a partition 14 is horizontally arranged in the inner cavity. The partition 14 divides the inner cavity into a first chamber 15 located above and a second chamber 16 located below.

[0035] The detection module includes a first detection module 21 and a second detection module 22; the first detection module 21 is installed in the first cavity 15, and the second detection module 22 is installed in the second cavity 16; the first detection module 21 includes a first circuit board 212 and a first sensor 211, the first circuit board 212 is fixed on the upper plate surface of the partition plate 14, the first sensor 211 is arranged on the first circuit board 212 and electrically connected to the first circuit board 212, and the operation of the first sensor 211 is not affected by air humidity; the second detection module 22 includes a second circuit board 222 and a second sensor 221, the second circuit board 222 is fixed on the upper plate surface of the bottom plate 12, the second sensor 221 is arranged on the second circuit board 222 and electrically connected to the second circuit board 222, and the operation of the second sensor 221 is affected by air humidity.

[0036] In the area of the surrounding plate 13 of the housing 10 corresponding to the first cavity 15, a circumferentially arranged first ventilation opening 131 is provided, and external air can enter the first cavity 15 through the first ventilation opening 131. Thus, the first sensor 211 can detect relevant parameters of the air; in the area of the surrounding plate 13 of the housing 10 corresponding to the second cavity 16, a circumferentially arranged second ventilation opening 132 is provided, and external air enters the second cavity 16 through the second ventilation opening 132. Thus, the second sensor 221 can detect relevant parameters of the air.

[0037] The isolation component 30 includes an annular plate 32 and a hollow flexible isolation film 31; the inner side of the flexible isolation film 31 is hermetically connected to the lower plate surface of the partition plate 14, and the annular plate 32 is attached to the outer edge of the flexible isolation film 31. Thus, the annular plate 32 is close to the inner wall of the surrounding plate 13 and can move up and down along the first cavity 15. Thus, as Figure 1 shown, after the annular plate 32 moves upward to the top of the second cavity 16, external air can enter the space between the flexible isolation film 31 and the bottom plate 12 through the second ventilation opening 132. Thus, the second sensor 221 can detect the air; as Figure 2 shown, and after the annular plate 32 moves downward to the bottom plate 12 of the second cavity 16 and fits tightly with the edge of the bottom plate 12, the flexible isolation film 31 closes this space, so as to isolate the second ventilation opening 132 from the second detection module 22 and prevent external air from contacting the second sensor 221.

[0038] The shape memory alloy spring 40 is arranged between the annular plate 32 and the bottom plate 12, and both ends of the shape memory alloy spring 40 are respectively attached to the bottom plate 12 and the annular plate 32. The shape memory alloy spring 40 is configured to switch between two states with temperature change, that is, as Figure 5 shown, after being heated to a high temperature, the shape memory alloy spring 40 switches to a retracted state, as Figure 4As shown, after being cooled to room temperature, the shape memory alloy spring 40 switches to the extended state. The shape memory alloy spring 40 is formed by helically bending a shape memory alloy tube 41, and a metal heating wire (hereinafter referred to as the first metal heating wire 42) is disposed in the shape memory alloy tube 41. Thus, if the outside air has normal humidity, the metal heating wire is in the power-off state, and the shape memory alloy spring 40 is in the extended state, as Figure 1 shown, so that the pushing ring plate 32 is located at the top of the first chamber 15, so that the outside space can contact the second sensor 221 through the second vent 132. If the outside air humidity is high, the shape memory alloy spring 40 switches to the retracted state, as Figure 2 shown, thereby driving the ring plate 32 to move down to the bottom of the second chamber 16, thereby isolating the second sensor 221 from the outside air, so as to prevent the second sensor 221 from being affected by the air humidity.

[0039] In some preferred embodiments, as Figure 1 shown, in the first chamber 15, a first air duct is separated by a grille plate, and the first sensor 211 is located in the first air duct. In the second chamber 16, a second air duct is separated by a grille plate, and the second sensor 221 is located in the second air duct. Thus, the air duct can accelerate the air flow, thereby improving the sensitivity of the sensor to air detection. More preferably, if there are multiple first sensors 211 and second sensors 221, a plurality of circumferentially arranged air ducts are correspondingly arranged in the chamber, and each air duct is provided with one sensor.

[0040] In some preferred embodiments, a second metal heating wire (not shown in the drawings) is disposed on the upper plate surface of the bottom plate 12 or on the flexible isolation film 31 to heat the second detection module 22 in the second chamber 16, so as to quickly restore the detection function of the second detection module 22.

[0041] In some preferred embodiments, as Figure 1 shown, an air duct 50 extends from the middle of the bottom plate 12 into the inner cavity of the housing 10. A circumferentially arranged first suction hole 51 is formed in the region of the tube wall of the air duct 50 corresponding to the first chamber 15, and a circumferentially arranged second suction hole 52 is formed in the region of the tube wall of the air duct 50 corresponding to the second chamber 16; a blower 60 is installed in the air duct 50. By operating the blower 60, the air in the first chamber 15 and the second chamber 16 can be sucked, so as to accelerate the air flow to improve the detection sensitivity.

[0042] In addition, although exemplary embodiments have been described in the present utility model, the scope thereof includes any and all embodiments based on the present utility model having equivalent elements, modifications, omissions, combinations (e.g., solutions that cross various embodiments), adaptations or changes. The elements in the claims will be broadly construed based on the language employed in the claims and are not limited to the examples described in this specification or during the implementation of this application, and the examples will be construed as non-exclusive. Thus, this specification and the examples are intended to be considered only as examples, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0043] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of their solutions) can be used in combination with each other. For example, those of ordinary skill in the art can use other embodiments when reading the above description. Additionally, in the above detailed description, various features can be grouped together to simplify the present utility model. This should not be construed as an intention that the disclosed features not claimed are necessary for any claim. On the contrary, the subject matter of the present utility model can be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein as examples or embodiments into the detailed description, where each claim independently serves as a separate embodiment, and it is contemplated that these embodiments can be combined with each other in various combinations or permutations. The scope of the present utility model should be determined with reference to the appended claims and the full scope of the equivalent forms empowered by these claims.

[0044] The above embodiments are only exemplary embodiments of the present utility model and are not used to limit the present utility model. The protection scope of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present utility model, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present utility model.

Claims

1. An environmental monitoring device, characterized in that, Comprising: A housing, the inner cavity of which is enclosed by a top plate, a bottom plate and a surrounding plate between the top plate and the bottom plate; A partition is horizontally arranged in the inner cavity, and the partition divides the inner cavity into a first cavity located above and a second cavity located below; a plurality of first ventilation openings and a plurality of second ventilation openings arranged circumferentially are respectively formed on the surrounding plates opposite to the first cavity and the second cavity; A detection module, which includes a first detection module and a second detection module respectively arranged in the first cavity and the second cavity; the first detection module includes a first sensor, and the second detection module includes a second sensor; An isolation component, which is arranged in the second cavity, and the isolation component includes a flexible isolation membrane and an annular plate. The inner side of the flexible isolation membrane is connected to the lower plate surface of the partition, and the annular plate is attached to the outer side of the flexible isolation membrane. The annular plate can move axially along the second cavity. When the annular plate moves to the top of the second cavity, air can enter the second cavity through the second ventilation opening. When the annular plate moves to the bottom of the second cavity, the flexible isolation membrane covers the second detection module to isolate it from the second ventilation opening; A shape memory alloy spring, which can switch between an extended state and a retracted state based on temperature changes. The shape memory alloy spring drives the annular plate to move to the top of the second cavity by switching to the extended state, and drives the annular plate to move to the bottom of the second cavity by switching to the retracted state; wherein: The shape memory alloy spring is made by helically bending a shape memory alloy tube, and a first metal heating wire is arranged in the shape memory alloy tube. The shape memory alloy tube is heated by energizing the first metal heating wire to make the shape memory alloy spring switch to the retracted state.

2. The environmental monitoring device according to claim 1, wherein, The first detection module further includes a first circuit board, the first circuit board is fixed on the upper plate surface of the partition, the first sensor is arranged on the first circuit board, the second detection module further includes a second circuit board, the second circuit board is fixed on the upper plate surface of the bottom plate, and the second sensor is arranged on the second circuit board.

3. The environmental monitoring device according to claim 2, wherein A first air duct is defined in the first cavity, and the first sensor is located in the first air duct; a second air duct is defined in the second cavity, and the second sensor is located in the second air duct.

4. The environmental monitoring device according to claim 3, characterized in that, A plurality of the first air ducts are circumferentially arranged in the first cavity, and each first air duct is provided with a first sensor. A plurality of second air ducts are circumferentially arranged in the second cavity, and each second air duct is provided with a second sensor.

5. The environmental monitoring device according to claim 1, characterized in that An air duct extends into the inner cavity of the housing from the middle of the bottom plate. The wall of the air duct is provided with a plurality of first suction holes arranged circumferentially in the area corresponding to the first cavity, and the wall of the air duct is provided with a plurality of second suction holes arranged circumferentially in the area corresponding to the second cavity; a fan is installed in the air duct.

6. The environmental monitoring device according to claim 1, wherein A second metal heating wire is arranged on the upper plate surface of the bottom plate or the flexible isolation membrane, and the second metal heating wire is used to heat and dry the second sensor.

Images