CN113984959B

CN113984959B - Mobile gas detection system and device

Info

Publication number: CN113984959B
Application number: CN202111119311.6A
Authority: CN
Inventors: 宋子良; 龚元兵
Original assignee: Ai Gan Technology Guangdong Co ltd
Current assignee: Ai Gan Technology Guangdong Co ltd
Priority date: 2021-06-30
Filing date: 2021-09-23
Publication date: 2024-03-19
Anticipated expiration: 2041-09-23
Also published as: CN113984959A

Abstract

A mobile gas detection device, comprising: the base and the movable shell are enmeshed to form a hollow structure, the hollow space is provided with a detection chamber for placing external gas to facilitate detection, the periphery of the detection chamber is provided with a first air port which is used for forming a circulation channel for detecting the internal and external gas, the external gas and the detection chamber passively enter or exit the detection chamber along with the reciprocating motion generated by the movable shell under the action of external force, and the external gas contacts with a gas detection part which is moved out of a standard gas box simultaneously in the entering process of reaching the end of the preset times of reciprocating motion.

Description

Mobile gas detection system and device

Technical Field

The invention relates to the field of civil gas detectors, in particular to a mobile gas detection system and a mobile gas detection device.

Background

Today, air quality has been called an important point of interest for most people, because it affects the physiological health of individuals, and thus many people want to detect the surrounding air at any time in life with some devices to obtain an evaluation of the environmental air related indicators. At present, some intelligent mobile gas detection devices for users to carry about have appeared, and they are generally arranged in a similar manner to those attached to watches, necklaces, clothes, etc.

CN111579719a discloses a wearable multiple gas detection device, comprising: the wireless communication module is in communication connection with the controller, the output ends of the gas sensing module and the temperature and humidity sensing module are connected to the input end of the controller through the signal processing unit, the data communication interface is connected to the communication end of the controller, the indication module is connected to the output end of the controller, and the battery module is connected to the power output interface through the battery power management circuit module and supplies power for the whole detection device through the power output interface. The invention combines the novel sensor with the integrated module design, has small volume and low power consumption, is convenient to carry and use, prolongs the service life of the detection device, and enriches the gas detection types.

CN107064245a discloses a portable gas detection device, which comprises a safety helmet portable detection device, a safety shoe portable detection device and a backpack portable detection device, wherein the safety helmet detection device comprises a safety helmet, an explosion-proof searchlight, a monitoring camera, a photosensitive camera, a gas detection device, a gas collection device, a control unit, an LED signal lamp, left and right protective earmuffs, a microphone and a protective pad; the portable safety shoe detection device comprises a safety shoe, a protective sleeve, a low-density gas detection device and a second storage battery; the portable detection of knapsack includes explosion-proof knapsack, antenna assembly, explosion-proof knapsack lid, knapsack transceiver, knapsack lock and detector. The invention can be used by more users in the transformation of common safety helmets and safety shoes, enhances the timeliness of alarming, has the functions of data sharing and unified analysis, can systematically judge the mine environment through LED optical signal transmission and positioning, can realize point-to-point communication and has more timely information communication.

However, the prior art does not relate to further miniaturization and portability studies of gas detection devices, for example, existing gas detection units can already be made to have a small volume, for example, BME680 gas detection unit manufactured by bosch, which is only 3 x 3mm, and at such a small volume, air ventilation often cannot be performed by natural air exchange. How to control the air amount of the external air entering the detection chamber under the driving of the external force and how to control the disturbance generated when the air flows at the same time so as to ensure the accuracy of the air detection becomes a big problem, and how to ensure that the air detection part possibly affected by the environmental air is not corroded by the environmental air and is in a standard calibration state at the moment is worth intensive study.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present invention was made, the text is not limited to details and contents of all that are listed, but it is by no means the present invention does not have these prior art features, the present invention has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.

Disclosure of Invention

To solve at least some of the above-mentioned shortcomings in the prior art, the present invention provides a mobile gas detection device, which includes: the base and the movable shell are enmeshed to form a hollow structure, the hollow space is provided with a detection chamber for placing external gas to facilitate detection, a first air port is arranged on the periphery of the detection chamber and used for forming a circulation channel of the external gas in the detection chamber, the external gas and the gas in the detection chamber passively enter or are discharged out of the detection chamber along with the reciprocating motion generated by the movable shell under the action of external force, and the external gas contacts with a gas detection part which is simultaneously moved out of a standard gas box in the entering process of reaching the end of the reciprocating motion of a preset number of times.

The detection chamber is also provided with a standard gas box, a gas detection part is arranged in the standard gas box, the movable shell can perform periodic reciprocating motion which is close to and far away from the base under the drive of external force, so that the volume change amount of the detection chamber changes according to different moving times, and the gas detection part is synchronously moved out of the standard gas box along with the motion of the movable shell which is far away from the base for the last time only when the preset times of reciprocating motion is finished.

The design firstly ensures that the gas detection part is always in the standard gas shielding protection when the detection task is not carried out, and because the invention does not carry out the type of continuous detection, the non-working time is quite large, if the gas detection part is in the atmosphere of the environmental gas for a long time, firstly the electronic components on the gas detection part can find corrosion damage, thus being easy to lead to inaccurate detection data. If the gas detection part is covered in the ambient gas for a long time, the detection result is gradually influenced by the deviation, and when the deviation is out of an acceptable range, the detection result becomes unacceptable. Therefore, the gas detection part is placed into the standard gas box for protection in a non-working state, so that the gas detection part is prevented from being corroded by external gas, and is always in a standard value calibration state, the detection result is prevented from being deviated, and the precision and the accuracy of gas detection are improved.

In addition, the invention adopts the effect that the two parts relatively move to change the space volume so as to generate air suction and exhaust, which is particularly important for the work of sucking the air in the external environment, especially for the detection chamber with small volume, the air circulation is difficult, the external actuation mode is adopted to force the internal air and the external air to circulate, the invention considers the entering proportion of the external air in the driving of the two relative movements, the influence of the disturbance of the air flow in the detection chamber on the working precision of the air detector is detected during the air exchange, the differential and related limitation is carried out on the movement times and the degree of each movement, compared with the unlimited arbitrary air suction and exhaust process, the limited movement times of the invention ensures that the air detection part can at least detect the fresh external air, prevents the situation of the error of the detection object caused by the insufficient air exchange amount, and the unconstrained arbitrary process can not meet the situation, especially when the air detection device is used by a user which lacks cognition, the random air suction and exhaust operation is likely to cause the error result, and a series of subsequent errors can be caused. Secondly, the invention limits the state that the motion degree can influence the gas flow in the detection chamber, specifically, the volume of the detection chamber is changed in a small range so that the gas flow amount is smaller, the gas disturbance in the detection chamber is smaller, if the time point of moving out the gas detector and starting to detect is selected at the moment, the disturbance of the gas disturbance to the detection process can be obviously reduced, the accuracy of the detection result is effectively improved, and compared with the operation of randomly driving the air suction and exhaust by a user, the invention can obtain more stable and accurate result. Meanwhile, when the gas detection part is moved out, the small gas flow speed obviously reduces the moving amount and speed of the standard gas from the box, and a large amount of standard gas is effectively prevented from leaking.

Finally, the gas detection part is set to be moved out of the standard gas box at the ending moment of the gas exchange process, so that the gas flow does not influence the gas detection part in the process of the previous times of gas exchange, and is synchronously moved out in the last inspiration process, so that the gas detection part can be contacted with the freshest external gas, and the detection accuracy is greatly improved.

Preferably, the base can be disposed on a cover shell that can be in a covering connection to the mobile device, the mobile shell and the base being in a non-contact state.

Preferably, the external force for driving the movable housing comes from an actuator, the actuator is electrically connected to the control part, the control part can control the actuator to drive the movable housing to move for a limited number of times and a limited degree of movement according to the number of times and the degree of movement preset by the internal program of the control part in a manner of sending instructions, wherein the number of times of movement refers to an accumulated value of the number of times that the movable housing makes reciprocating movements close to and far from the base, and the degree of movement is positively correlated with the change amount of the volume of the detection chamber.

Preferably, the control unit is characterized in that when it detects that the number of movements is about to reach a threshold value, i.e. that the movement of the movable housing is about to take place for the last time away from the base, the control unit sends a door opening command to a switch door provided on the standard gas box, which is electrically connected thereto, and simultaneously sends a removal command to a removal device provided in the standard gas box, which is electrically connected thereto, and the gas detection unit is provided on the removal device and is removed by the removal device from the open switch door outside the standard gas box to enter the detection chamber at this time.

Preferably, the control unit controls the relationship between the number of movements of the moving case and the degree of movement such that the degree of movement gradually decreases with the increase in the number of movements.

Preferably, the external force is from manual operation of a user, wherein an elastic body is arranged between the movable shell and the base, a multistage limiting part is further arranged on the base, a guide link rod is arranged on the movable shell, one end, close to the base, of the guide link rod is bent in an axial direction in a deviating mode to form a movable end, sliding connection is formed between the movable end and the multistage limiting part, and the guide link rod is configured to be subjected to prestress to have deflection force deflected in a preset direction.

Preferably, the multi-stage limiting part comprises a plurality of groups of reciprocating slide ways with unequal lengths and guide ribs for dividing boundary lines between adjacent reciprocating slide ways, the reciprocating slide ways are divided into at least two runways, the two runways are separated by a partition plate, a notch is formed in one end of each partition plate, which is close to the movable shell, of each runway, the guide ribs extend in parallel to the path of the reciprocating slide way, the extending length of each guide rib is smaller than the path length of each reciprocating slide way, one end, which is close to the base, of each guide rib is of an inclined structure, and the inclined structure starts to extend obliquely to the direction of the movable shell along the corresponding point of the first passing of the transverse moving direction of the movable end.

Preferably, the method is characterized in that a runway end point of a last reciprocating runway is communicated with a return runway start point, an end point of extension of the return runway is in the same plane with a start point of a first reciprocating runway, the return runway end point is communicated to a reset runway start point, the bottom of the reset runway is lower than the bottom of the return runway to form a step structure at the junction of the return runway and the return runway, an end point of extension of the reset runway is communicated to the start point of the first reciprocating runway, a ramp structure which is lifted upwards along the bottom of the reset runway and extends to the start point of the first reciprocating runway is arranged at the junction, and the first reciprocating runway and the last reciprocating runway are judged according to the sequence of contact time in the moving process of a moving end along with time change.

Preferably, the guide rod is connected with a guide wire, the other end of the guide wire penetrates through an opening channel of the side wall of the standard gas box and is connected to the clamping block, a first spring with one end fixed and the other end connected to the clamping block is arranged in the opening channel, a mobile station is further arranged in the standard gas box, one end of the mobile station penetrates out of the standard gas box and continuously extends out of the mobile shell, a gas detection part is arranged on the mobile station, the side wall of the mobile station is provided with a clamping groove capable of being connected with the clamping block in a limiting mode, a second spring is further arranged at the bottom of the mobile station, and when the clamping block is connected with the clamping groove in a limiting mode, the second spring is in a compressed state.

Preferably, the length of the lead wire is set to ensure that it is in a relaxed state when moving along the moving end at least from the starting point of the reset runway to the starting point of the last reciprocating slide, and is in a tensioned state and pulls the clip out of the clip groove completely throughout the reciprocating movement at the last reciprocating slide or at least when it moves to the ending point of the last reciprocating slide.

Preferably, a mobile gas detection system, comprising: the base and the movable shell are enmeshed to form a hollow structure, the hollow space is provided with a detection chamber for placing external gas so as to facilitate detection, a first air port is arranged on the periphery of the detection chamber and is used for forming a circulation channel for detecting the internal and external gas, the movable equipment at least can carry out data processing calculation, the external gas and the detection chamber passively enter or exit the detection chamber along with the reciprocating motion generated by the movable shell under the action of external force, the external gas is contacted with a gas detection part which is moved out from a standard gas box at the same time in the entering process of reaching the end of the preset times of the reciprocating motion, and the data generated by the external gas is processed in the movable equipment and forms a final result by the gas detection part.

Drawings

FIG. 1 is a schematic view of the structure of embodiment 1 of the present invention;

FIG. 2 is a schematic front view of a portion of a standard gas box according to example 1 of the present invention;

FIG. 3 is a schematic top view of a portion of a standard gas box of example 1 of the present invention;

FIG. 4 is a schematic diagram of circuit connection of embodiment 1 of the present invention;

FIG. 5 is a schematic view showing the structure of the gas detecting unit according to embodiment 2 of the present invention when the gas detecting unit is not removed;

FIG. 6 is a schematic view showing the structure of the gas detecting section according to embodiment 2 of the present invention when the gas detecting section is removed;

FIG. 7 is a schematic view of a multistage limit portion according to embodiment 2 of the present invention;

FIG. 8 is a schematic view showing a portion of a guide rod according to embodiment 2 of the present invention;

FIG. 9 is an enlarged schematic view of a portion of a standard gas box according to embodiment 2 of the present invention;

in the figure: 100. a moving shell; 200. a coating shell; 210. a base; 211. a first gas port; 212. a first one-way valve; 213. a second gas port; 214. a second one-way valve; 300. an elastomer; 400. an actuator; 500. a standard gas box; 510. a removal device; 520. a switch cabin door; 530. an open channel; 531. a first spring; 532. a clamping block; 540. a mobile station; 541. a clamping groove; 542. a second spring; 543. a two-stage button; 600. a gas detection unit; 700. a guide link; 710. a moving end; 800. a lead wire; 900. a multi-stage limit part; 910. a reciprocating slideway; 911. a first runway; 912. a second runway; 913. a notch; 920. a guide rib; 930. a return runway; 940. resetting the runway; 941. a step structure; 942. a ramp structure; 1000. and a control unit.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise specifically stated or defined, terms such as "mounted," "connected," and "connected" and the like in the specification should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; the connection can be mechanical connection or electric connection, or a combination of mechanical connection and electric connection; the electronic component parts can be directly connected or indirectly connected through the intermediate transfer part, and the electronic component parts can be installed by circuits through wires or designed by simplifying circuit boards through modes such as integration. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific application.

The invention is specifically described below with reference to the accompanying drawings.

Fig. 1 provides a mobile gas detection device comprising a housing 200 and a mobile housing 100 that is movable relative to the housing 200 under a driving force. The covering shell 200 here is mainly intended for connection to a device, in particular a mobile device, having a certain computing processing capacity and having a specific form of housing, which device has a certain functionality of computing processing of data, which functionality is typically provided by a processor chip, a computing unit, a processing unit in such a device. In the prior art background, mobile devices in a general sense may include smart phones, mobile electronic terminals, palm PADs, smart wearable devices, portable computers and other devices, where the smart wearable devices may include smart watches, smart glasses, smart clothes and other smart auxiliary devices that may be attached to a person and used following daily life. In theory, the mobile gas detection device adopted by the invention has relatively small volume, and can be attached to mobile equipment in the form of an external shell without affecting or significantly affecting the portability and the storage of the equipment. For example, for a smart phone device commonly used by people, the cover case 200 of the present invention may be disposed with reference to a case structure similar to a common mobile phone case in the market, and may be designed as a lightweight and light case structure to ensure the portability of the whole mobile phone after being connected to the mobile phone.

Because the device can be connected to the outer side of the mobile equipment, the whole structure of the device can be formed into a quite small outline to prevent losing portability of the mobile equipment, and therefore the volume of the detection chamber in the device is tiny compared with that of a large-sized gas detection equipment, so that external gas is difficult to enter the detection chamber, and the exchange of the gas in the detection chamber and the external gas is realized through the driving of external force.

In a preferred embodiment, the cover 200 is generally made of a relatively hard material, or at least at the location where it mates with the mobile shell 100. The material can be selected from engineering plastics, metal alloys or acrylic materials according to the properties of common mobile equipment accessories in the market. In some cases, to maintain the consistency of the materials of the whole cover 200, the portion of the cover 200 that mates with the movable cover 100 and other portions of the cover 200 may be formed integrally from the same material, so as to improve the physical strength therebetween. The portion of the cover case 200 that mates with the movable case 100 is generally configured to form a closed space in combination with the movable case 100, and for convenience of description, the mating portion is referred to as a base 210. If the cover shell 200 is placed on the ground to observe the plane of the movable shell 100, the movable shell 100 may be configured to be approximately C-shaped or U-shaped with the opening direction facing the ground, and the base 210 on the cover shell 200 is correspondingly configured to be approximately C-shaped or U-shaped with the opening direction facing away from the ground, so that the combination of the base 210 and the movable shell 100 forms a complete rectangular or circular rectangular space, which forms a main location for the gas detection function to be implemented in the present invention.

Thus, in other embodiments, the present invention will not have the cover 200, but only the base 210 and the mobile case 100 are formed as a structural entity that is connected to the existing mobile device accessory housing on the market as required. The connection means here have a number of possible options, such as gluing means, suction means or magnetic attraction means, which can form a fixed connection to a certain extent, which are all-purpose connection means for the existing accessory housings in the market, and the connection means which do not require additional connection features on the side of the housing are a good choice since the actual user of the device according to the invention may wish to place the device on the existing accessory housing in their hand instead of installing a new housing for his own mobile device.

In other cases, the user may not want to place the structural entity on the mobile device for a long period of time, because although the structural entity may be made small in size, it may still cause some user discomfort, which may result from the compulsory psychological need of the user for flatness of the housing, and may also result from the raised feel that the user feels when placing the mobile device in a clothing bag. In this case, the cover case 200 may be used only as a case for covering a mobile device, for example, in accordance with a mobile phone case structure, except that the cover case 200 and the base 210 are separated from each other, specifically, the base 210 and the mobile case 100 form a structural entity independent from the cover case 200, a first connection feature is provided at a certain portion of the cover case 200, a second connection feature is provided at a back surface of the base 210 facing away from a hollow space of the structural entity, and a user may connect the structural entity to the cover case 200 through a mating relationship of the first connection feature and the second connection feature. The two connecting features can adopt a connecting structure with at least two features which are mutually matched and connected, such as a matching relationship of a buckle or an inserting buckle, a matching relationship of screw bolts, a matching relationship of a hook surface and a rough surface of the magic tape, and the like. With this design, the user can detach the structural entity from the enclosure 200 without using the present device to reduce the potential for discomfort.

As a variation of the above case, the apparatus may be configured to separate from the mobile device and operate independently, and the effect of independent operation may be achieved by simply placing the work required to be completed on one side of the mobile device in the following manner of replacing the components with the same functions in the structural entity formed by the base 210 and the mobile case 100, for example, the calculation processing function on the mobile device may be completed by using a circuit board on which a processing chip is mounted, and the power supply function of the mobile device may be implemented by using an independent power supply. Or in another case, the wireless transmission module is added into the structural entity to realize that primary data of gas detection is transmitted to nearby mobile equipment in a wireless mode, and then the primary data are processed and calculated by the mobile equipment to obtain a final detection result.

The structural entity formed by the cooperation of the base 210 and the movable housing 100 is a hollow structure, and the hollow space can be referred to as a detection chamber, so that when the movable housing 100 performs a close or distant motion relative to the base 210, the volume of the detection chamber will correspondingly increase or decrease, and the air that can be contained in the detection chamber will correspondingly increase or decrease.

The movable housing 100 may be configured to be a hard structure, for example, made of a hard plastic or a metal, in which case, in order to ensure that the movable housing 100 can move relative to the base 210, a contactless arrangement manner may be adopted between the movable housing 100 and the base 210, specifically, in the case that both the movable housing 100 and the base 210 adopt a U-shaped structure, the openings of the movable housing 100 and the base 210 are not equal in size, but are configured in such a manner that the opening of one component is larger than the opening of the other component, so that a certain gap is formed on the side walls of the movable housing 100 and the base 210, and a sealing body is disposed in the gap, where an interference fit is formed between the thickness of the sealing body and the width of the gap so that the sealing body can be clamped in the gap. During the movement of the movable housing 100 toward and away from the base 210, the sealing body is subject to the dual friction force of the movable housing 100 and the side wall of the base 210 to have a tendency to move or to move concomitantly, but the space for its movement generally falls into the gap formed between the movable housing 100 and the side wall of the base 210. Alternatively, in other cases, the sealing body is fixedly coupled to one of the sidewalls of the movable housing 100 or the base 210, such that the sealing body is prevented from moving along with the movement of the movable housing 100.

In other embodiments, the sliding block and the sliding groove can be used to match between the movable housing 100 and the base 210, so as to achieve the freedom of movement between the movable housing 100 and the base 210. In this state, the moving case 100 and the side wall of the base 210 are formed one as a slide groove and the other as a slider,

in another embodiment, the movable housing 100 may be a soft structure, such as a skin made of rubber or polymer gel, which has the effect of sealing air, and may be moved toward or away from the base 210 under the action of external driving. The flexible moving case 100 may be circumferentially and fixedly coated on the sidewall of the base 210, and in this case, a space for natural sealing gas is formed between the moving case 100 and the base 210, so that a sealing body may not be provided if necessary. Accordingly, the soft mobile case 100 may be configured to have a certain prestress, under which the mobile case 100 may arch with respect to the top horizontal plane of the sidewall of the base 210 to form a convex structure, and the convex portion of the mobile case 100 may gradually decrease in volume by applying a driving force near the base 210 to the convex structure, during which the volume of the detection chamber is reduced, that is, the process of exhausting air outwards. In some cases, the soft mobile shell 100 may further move down into the opening of the base 210 to form a concave structure, at which time the volume of the detection chamber will be further reduced, in which case more gas may be vented. When the external driving force is removed, the prestress of the movable housing 100 drives the movable housing to move away from the base 210 and restore to the convex structure, and in this process, the volume of the detecting chamber is gradually increased to form negative pressure, and at this time, the external air enters the detecting chamber, thereby completing the air suction process.

The base 210 is provided with a first air port 211. The first air port 211 is used to provide a connection path between the inside and outside air during the movement of the movable housing 100 relative to the base 210, which causes the volume of the sensing chamber to increase or decrease. In its most basic aspect, the first air port 211 has at least a certain opening area to allow air to circulate, and in its second aspect, the opening shape may be set to a regular or irregular shape, for example, a rectangular, circular, polygonal, or the like shape. The first air port 211 may be provided at an arbitrary position of the base 210, and even in case of neglecting possible shielding caused by an external braking force applied to the moving case 100, the first air port 211 may be provided on the moving case 100. Preferably, the first air port 211 is provided on a sidewall of the base 210. The size of the opening of the first air port 211 determines the maximum air flow rate through the opening per unit time, and too small an opening size will reduce the efficiency of air exchange in the detection chamber.

In other embodiments, the second air port 213 is further disposed at another position different from the position where the first air port 211 is disposed, the first air port 211 and the second air port 213 may be disposed at any position of the base 210 or the movable housing 100, the first air port 211 is provided with the first check valve 212, and the second air port 213 is provided with the second check valve 214, and the opening directions of the first check valve 212 and the second check valve 214 are opposite to each other, i.e. if the opening direction of the first check valve 212 is set to a direction allowing only the external air to flow into the detection chamber, the opening direction of the second check valve 214 is set to a direction allowing only the internal air of the detection chamber to flow into the external air, and vice versa. Preferably, the positions of the first gas port 211 and the second gas port 213 are arranged on both sides of the gas detecting part 600, thereby forming a gas moving path through the gas detecting part 600, and since the path has a definite direction, unexpected fluctuation of data detected by the gas detecting part 600 due to disturbance and winding of the gas in the detecting chamber is avoided.

Preferably, a standard gas box 500 filled with standard gas is also arranged in the space of the detection chamber, and the standard gas contained in the box can be used for detection

The present device employs at least two different sets of structures on the actuation scheme for manipulating the movement of the movable housing 100 and changing the volume of the detection chamber, which are divided into two alternative embodiments of a mechanical drive and an electronic drive. Both embodiments can realize that the moving case 100 is driven to change the volume change amount of the sensing chamber according to the number of movements in the periodic reciprocating movement near and far from the base 210, wherein the gas sensing part 600 is synchronously removed from the standard gas box 500 with the last movement of the moving case 100 far from the base 210 only when the predetermined number of reciprocating movements is reached. The number of movements herein refers to the number of movement cycles of the moving case 100 from the approaching to the separating base 210.

Example 1 (shown in fig. 1, 2, 3, 4):

in order to protect the gas detecting unit 600 and ensure that the gas detecting unit 600 is in a standard state or a calibrated standard state most of the time, the gas detecting unit 600 is stored in the standard gas box 500 in a standby state, and is removed from the standard gas box 500 when it is necessary to detect the ambient air in the detection chamber. The standard state refers to a stand-by state after the gas detection unit 600 is factory calibrated or a stand-by state after a calibration operation is performed by using the standard gas in the standard gas cartridge 500 after a certain period of time. Because the current gas detection principle is also based on a relative detection method, i.e., a certain index obtained by detecting the ambient gas is calculated from the amount of change in the background value of the standard gas caused by a certain disturbance in the gas detection section 600. If the gas detection unit 600 continues to perform the task of gas detection without performing periodic calibration, the index result obtained will have accumulated shifts, and the larger the number of detections, the larger the shift, until the error exceeds the acceptable range, and the result will become unreliable. In addition, the influence of the ambient gas on the gas detection unit 600 is not limited to the deviation of the detection result, and may corrode or disturb the circuit components of the gas detection unit 600, resulting in a reduction in the service life of the gas detection unit 600. Therefore, when the gas detection part 600 does not execute the detection task, the gas detection part 600 is stored in the standard gas box 500, so that the gas detection part 600 can be prevented from being influenced by corrosion of ambient air, and the gas detection part 600 can be in a calibrated standard state at any time, so that the next gas detection task can be responded quickly and accurately.

Preferably, the standard gas box 500 is provided on the base 210 together with the gas detecting part 600 provided therein, and this design avoids the problem of shaking caused when it is provided on the movable case 100 while it follows the up-and-down reciprocating movement of the movable case 100, which shaking has a large influence on the more precise gas detecting part 600, particularly on the stable operation and detection accuracy of the gas detecting part 600, and thus the stability of the gas detecting part 600 is ensured in such a manner that it is provided on the more stable base 210.

The present embodiment employs an actuator 400 to realize driving of the movable case 100. The actuator 400 is used to force the movable housing 100 to reciprocate toward and away from the base 210, and may be configured in a variety of actuating configurations, and one is configured in a push-type configuration in which the actuator 400 is disposed on the other side of the movable housing 100 facing away from the base 210, and drives the movable housing 100 toward the base 210 by applying a compressive force to the side in the direction of the base 210, and in the same manner, applies a tensile force to the side in the direction of the base 210 to drive the movable housing 100 toward the direction of the base 210.

Another actuating structure is also a telescopic structure, and the actuator 400 is disposed in the detection chamber, and has one end connected to the inner side of the movable housing 100 and the other end connected to the base 210, so as to form a rod-shaped structure supported between the movable housing 100 and the base 210. Preferably, the actuators 400 are positioned so as not to interfere with the path of movement of the gas, such as in some cases, may be positioned at the corners of the detection chamber, and multiple sets of actuators 400 may be positioned to actuate simultaneously to create a more stable motion of the moving housing 100. The actuator 400 performs a telescopic movement by means of a motor, and when the actuator 400 is contracted, it drives the movable housing 100 to approach the base 210, and when the actuator 400 is extended, it drives the movable housing 100 to move away from the base 210, thereby forming a reciprocating movement, and the change of the volume of the detection chamber causes the gas inside to be exchanged with the outside.

Preferably, in order to reduce the energy consumption of the actuator 400, at least one elastic body 300 is further provided in the detection chamber, and the elastic body 300 is supported between the moving case 100 and the base 210 as in the actuator 400. In this case, the actuator 400 only performs the task of driving the movable case 100 to approach the base 210, and at this time, the elastic body 300 shortens and accumulates elastic potential energy synchronously, and when the movable case 100 needs to perform a moving-away action, the actuator 400 may perform a shutdown or no instruction to output externally, and at this time, the movable case 100 is driven by the elastic force of the elastic body 300 returning to its original state to move in a direction away from the base 210.

In order to realize the control of the actuator 400 during the driving task, a control part 1000 is further provided in the device, and the control part 1000 may generally be composed of a processor chip with a control program written therein in advance and related supporting circuits, and may be in the form of an MCU chip or a single chip microcomputer or other common electronic control schemes in the market. The control program is mainly used for controlling two parts, namely, controlling the number of times of reciprocating motion of the movable housing 100 for approaching and separating, and controlling the change amount of the volume change of the detection chamber caused by each reciprocating motion of the movable housing 100.

Controlling the number of back and forth movements of the movable housing 100 increases the exchange rate of the gas in the sensing chamber, and in particular, due to the flow property of the fluid, it is not enough to replace all the gas in the sensing chamber with the external gas by only one back and forth movement, so that the change of the volume of the sensing chamber needs to be performed multiple times to gradually increase the proportion of the external gas to the total volume of the sensing chamber. Qualitatively, for example, the gas in the detection chamber in the initial state is referred to as primary gas, the external gas is referred to as external gas, and if the first driving of the moving case 100 reciprocates to form a change in volume of the detection chamber, the external gas is sucked into the detection chamber and occupies 50% of the total volume of the detection chamber, the external gas may be raised to 80% after the second driving, and the external gas may be raised to 85% after the third driving. It may be noted that the increase of the external gas ratio is not linear, but a reciprocating process of mixing and discharging the external gas with the original gas remaining in the detection chamber, mixing again, and discharging again, and the increase of the external gas ratio is not a simple accumulation process but a nonlinear increase process. In general, the external air ratio increases with the number of reciprocating movements of the movable housing 100, so that the control program controls the actuator 400 to drive the movable housing 100 to perform a predetermined number of movements by a predetermined number of times, and sends a stop command to the actuator 400 when the number of times is limited. The number of times may be selected according to the desired gas exchange ratio, or may be selected according to the minimum detection requirement value of the gas detection unit 600 used, with a limited number of experiments or fluid-mechanical calculations based on the detection chamber volume, volume change, and some other parameter. For convenience of description, the number of times is selected to be 3 times hereinafter, but it is understood that the number of times may be arbitrarily changed.

The second function of the control program is to control the amount of change in the volume change of the detection chamber that occurs each time the housing 100 is moved back and forth. The amount of change adjustment or change is performed by adjusting the degree of movement of the actuator 400, which may refer to the depth of pressing by the pressing actuator 400, in this embodiment the telescopic distance of the actuator 400. Specifically, assuming that the maximum telescopic distance of the actuator 400 is L, the control program controls the telescopic distance of the actuator 400 to be one third of L in the first actuation, two thirds of L in the second actuation, and L in the last actuation, the control program controls the telescopic distance of the actuator 400, the first detection chamber volume change amount is the smallest, the second time is slightly larger, and the third time is the largest. The volume change of the detection chamber is related to the passing speed of the gas in the detection chamber and the formed turbulence of the gas flow, for example, when the smaller volume change quantity leads to the small quantity of the gas sucked from the outside and the small quantity of the gas discharged from the outside, the quantity of the gas passing through the detection chamber in unit time is correspondingly smaller, and the turbulence of the gas flow caused by the flowing of the gas is relatively smaller; similarly, when the volume change amount is large, the amount of gas sucked from the outside and the amount of gas discharged from the outside are large, and the amount of gas passing through the detection chamber per unit time is correspondingly large, the turbulence of the gas flow caused by the flow thereof is relatively large. In the detection chamber, the degree of disturbance of the gas has a large influence on the stability of the detection result of the gas detection unit 600, and it is often desirable that the flow of the gas flow be gentle to reduce unexpected value jitter during the detection. In addition, the gas flow rate has an effect on the gas in the standard gas box 500, specifically, some structural measures are taken to prevent the standard gas from leaking into the detection chamber or the control of the rapid switch hatch 520 is performed during the process of removing the gas detection part 600 from the standard gas box 500, but some standard gas still leaks into the detection chamber, and the leakage amount and the leakage speed are related to the gas flow rate condition in the detection chamber at the moment of removing the gas detection part 600, if the gas flow rate is large, a large negative pressure is formed near the opening of the standard gas box 500, the standard gas will be more easily sucked out of the standard gas box 500, otherwise, if the gas flow rate is small, the leakage amount of the standard gas is smaller. Therefore, although the extension and contraction length of the control program control actuator 400 can be arbitrarily set in the present invention, the present embodiment adopts a control method in which the detection chamber volume change amount gradually decreases with the increase in the number of times, taking into consideration the stability of the gas detection process and the prevention of the leakage of a large amount of standard gas.

The control unit 1000 controls the gas detection unit 600 existing in the standard gas cartridge 500 to be moved out when it detects that the number of telescopic movements of the actuator 400 reaches a preset threshold. One set of structural arrangements that may be employed in this process are a switch door 520 provided on the standard gas box 500 and a removal device 510 provided on the gas detection portion 600. The control part 1000 is electrically connected with the switch cabin door 520 and the removing device 510, and when the control part 1000 judges that the movement of the movable housing 100 is about to end, two instructions are sent to the switch cabin door 520 and the removing device 510, one is a door opening instruction for controlling the switch cabin door 520 to open, and the other is a removing instruction for controlling the removing device 510 to remove the gas detection part 600 from the outside of the standard gas box 500, after the gas detection part 600 is removed from the outside of the standard gas box 500, the switch cabin door 520 is quickly closed to prevent the standard gas from continuing to leak. The command for closing the door may be sent by the control unit 1000 to the door 520 after a preset trigger time, or may be included in a previous command for controlling the door to be opened, that is, the door 520 automatically closes the door after a preset time for triggering the door opening operation. The opening mode of the switch cabin door 520 may be a sliding opening mode of a sliding door to avoid a great amount of leakage of standard gas, the removing device 510 may be a telescopic rod driven by a motor or a spring rod structure capable of being recovered by a motor, further, an opening matching with the radial surface size of the rod-shaped structure of the removing device 510 may be provided on the switch cabin door 520, and after the gas detecting part 600 completely moves out of the standard gas box 500, the opening is contacted with the rod of the removing device 510 in a manner of clamping two sides of the switch cabin door 520 to form a sealing measure.

Further, the timing of triggering the moving-out device 510 by the control portion 1000 may be selected when the moving case 100 is close to the base 210 for the last time, so that the gas detecting portion 600 and the moving case 100 are moved away from the base 210 for the last time, and the gas detecting portion 600 contacts the air inhaled from the outside for the last time, and the data detected by the gas detecting portion 600 are timely and accurate. In addition, the smaller airflow impact formed by the air sucked from the outside at this time can cause dust on the gas detection part 600 and standard gas possibly covered around the gas detection part 600 to be blown away, thereby further improving the service life and detection accuracy of the gas detection part 600.

After the detection of the gas detection portion 600 is completed, the data is converted by the analog-to-digital converter and then sent to the mobile device for calculation through the wireless communication module, and the wireless communication module can be set by adopting, but not limited to, bluetooth, WIFI, NFC, ZIGBEE and the like.

Subsequently, the control part 1000 controls the opening of the switch door 520 and the retraction of the removal device 510, so that the gas detection part 600 returns to the standard gas box 500.

The power supply for supplying power to all the electronic components can be arranged in the detection chamber or at any position on the device, and is electrically connected with all the electronic components to form power supply.

Example 2 (shown in fig. 5, 6, 7, 8, 9):

in embodiment 1, a large number of electronic components are used as carriers for driving the mobile case 100, detecting the driving times, controlling the driving parameters, etc., and the large number of electronic components will tend to increase the volume of the device, and although a small and miniature model can be selected for replacement, some components such as the actuator 400 are inconvenient to find the existing products in the market, and require customization, and the maintenance cost and power consumption caused by the higher complexity of the electronic components will also be multiplied. The advantage of adopting the electric control mode is that the control strategy, i.e. the control program, can be changed conveniently and subsequently, but in some occasions where small volume is required to improve portability, the structural arrangement mode of embodiment 2 is provided, and the embodiment adopts a large number of mechanical structures, and does not involve a large number of controllers and actuators 400, so that the overall volume is greatly reduced.

The present embodiment cancels the design of the actuator 400, so that the user needs to manually press the movable housing 100 to realize the driving, and the driving of the movement of the movable housing 100 away from the base 210 can be performed according to the structure similar to that of the elastic body 300 in embodiment 1, that is, the user manually presses the movable housing 100 to approach the base 210, and the compressed elastic body 300 resets the movable housing 100 away from the base 210 after the user cancels the application of force, thereby forming a complete reciprocating movement.

In order to control the number of reciprocating motions of the moving case 100 and the variation of the volume of the sensing chamber generated during the control, the present embodiment provides a multi-stage limit part 900, the multi-stage limit part 900 being disposed on the base 210, on which a plurality of sets of reciprocating slides 910 having different lengths and guide ribs 920 dividing the boundary lines of the adjacent reciprocating slides 910 are disposed. The movable housing 100 is connected to the guide bar 700 on the side close to the inside of the detection chamber, and the connection may be hinged for convenience. The guide link 700 is provided with a bent rod-shaped structure at one end, i.e., a rod-shaped structure similar to an L-shape, and one end of the guide link 700 bent is referred to as a moving end 710, and the moving end 710 is placed in the reciprocating slide 910 of the multistage limit portion 900 and forms a sliding connection state with the reciprocating slide 910.

The multistage stopper 900 is disposed beside the standard gas cartridge 500, and for convenience of description, the side of the multistage stopper 900 close to the standard gas cartridge 500 is referred to as a proximal side, and the side remote from the standard gas cartridge 500 is referred to as a distal side. Each reciprocating slide 910 on the multistage limit portion 900 is divided into two equal-length or approximately equal-length runways, the setting directions of the two runways are approximately the same in the direction of the moving shell 100 approaching and separating from the base 210, the two runways are separated by a partition plate, the cross section of each runway forms a U shape, a notch 913 is arranged at one end of the runway, which is close to the moving shell 100, and the size of the notch 913 is designed according to the radial size of the moving end 710 of the matched guide link 700. When the mobile end 710 is slidably coupled within the reciprocating slide 910, assuming its initial position within an end of one of the runways of the reciprocating slide 910 proximate to the base 210, the other runway is referred to as a first runway 911 and the other runway is a second runway 912. At this time, the movable housing 100 should be in a pressed state close to the base 210, and then the elastic body 300 drives the movable housing 100 to move in a far direction, and then drives the movable end 710 to slide in the slideway and move to an end of the runway close to the movable housing 100. By providing the hinge portion of the guide link 700 and the movable case 100 with a pre-deflection structure having a pre-stress such that the guide link 700 together with the movable end 710 has a deflection force deflected in a predetermined direction, the direction of the deflection force can be set to a direction substantially in the same direction as the transverse component of the movement of the guide link 700 in the multistage limit portion 900 by providing the pre-deflection structure in a direction which in this embodiment is equivalent to the proximal-to-distal transverse direction. That is, when the moving end 710 moves to a position where the reciprocating slide 910 is close to the notch 913 provided at one end of the moving case 100, the deflecting force drives the moving end 710 to move toward the second track 912 through the notch 913, and the moving case 100 is in a reset state away from the base 210. When the user presses the mobile housing 100 again, the mobile end 710 will slide down the second runway 912 until it slides to the end of the reciprocating chute 910. The end point communicates with the start point of the other adjacent reciprocating slide 910, where an intersection line is formed, at which a guide rib 920 is provided, the guide rib 920 having a strip-like structure and extending from one end of the reciprocating slide 910 near the moving case 100 to one end near the base 210, the extending length of which is set to be smaller than the path length of the first track 911 or the second track 912 in the reciprocating slide 910, and preferably, the space formed by shortage thereof constitutes a slide through which the moving end 710 can just pass. The two side walls of the guide rib 920 form the side walls of two runways in the adjacent two reciprocating runners 910. The guide rib 920 preferably has an inclined structure at an end near the base 210, and the inclined structure is inclined in such a direction as to extend obliquely toward the moving case 100 from a corresponding point through which the first pass along the lateral moving direction of the moving end 710. The oblique structure of the guide rib 920 is provided so that an auxiliary guide for the moving direction of the moving end 710 is formed therein, when the moving end 710 moves to the boundary line of the two reciprocating slides 910, the moving case 100 moves toward the new reciprocating slide 910 due to the action of the deflection force, and when the user loosens his hand, the moving end 710 is driven to move upward, and at this time, one end of the moving end 710 contacts the guide rib 920 inclined in the moving direction, further guiding the moving direction of the moving end 710 to the correct direction.

The reciprocation slide 910 and the guide rib 920 of the above-described structure may be combined in any number, and the path lengths of the different reciprocation slide 910 may be set to be different according to the reason set forth in embodiment 1, and the lateral components of the 3 reciprocation slide 910 in the moving direction of the moving end 710 are sequentially reduced in their path lengths in terms of the arrangement scheme adopted in embodiment 1. The runway end point of the last reciprocating runway 910 is communicated with a return runway 930, the path extending direction of the return runway 930 is the same as the transverse direction from the far end to the near end, and the end point of the return runway 930 extending is on the same plane with the starting point of the first reciprocating runway 910, and the return runway 930 can be arranged in an oblique direction to reduce sliding resistance. The end points of the return track 930 are communicated to the reset track 940, and both the return track 930 and the reset track 940 are in groove-shaped structures, and the method is characterized in that if the groove bottom parts of the two return track 930 are placed in parallel with the ground, the bottom of the reset track 940 is lower than the bottom of the return track 930, so that a step structure 941 appears at the end point position of the return track 930, when the moving end 710 moves to the step structure 941, the moving end will fall into the reset track 940 from the step structure 941, and the blocking effect of the side wall of the step structure 941 cannot be acted by deflection force, so that the moving end cannot return to the return track 930. The starting point of the reset runway 940 constitutes the initial position of the mobile end 710 when the mobile shell 100 is in the initial state. The force for driving the movable end 710 to drop may be from gravity or may be a pre-stress pre-set on the guide rod 700. The reset runway 940 extends in a direction toward the base 210 and has its path ending point in communication with the proximal reciprocation slide 910 starting point, where the communication utilizes a ramp structure 942 that extends upwardly from the bottom of the reset runway 940 to the first runway 911 of the reciprocation runway.

The multistage limit portion 900 cooperates with the guide rod 700 to define the volume change of the detection chamber and the multiple pressing of the movable case 100, and the overall flow is as follows: when the movable case 100 is in the initial reset state, the movable end 710 of the guide link 700 is at the starting point of the reset runway 940, and when the user manually presses the movable case 100, the movable end 710 is driven to move along the reset runway 940 in a direction approaching the base 210 to the ramp structure 942, where the movable case 100 is in a pressed state by the upward ramp of the force of the deflection force to the first runway 911, and the movable case 100 cannot be continuously pressed due to the interference of the guide link 700; at this time, the user releases his hand, the movable housing 100 is driven by the elastic body 300 to move away from the base 210, and drives the guide rod 700 to move along the first track 911 to the notch 913, and to move to the second track 912 by the deflecting force, and at this time, the movable housing 100 is in a reset state and completes one reciprocation; then the user presses the moving case 100 again, causing the moving end 710 to move along the second runway 912 to the end point of the reciprocating slide 910, to move into the adjacent reciprocating slide 910 by the deflecting force, and the user cannot press down due to the interference of the guide link 700; then the user loosens the hand again, under the auxiliary guiding action of the guiding rib, the moving end 710 smoothly enters the new reciprocating slide way 910, after the pushing is completed for a plurality of times of pressing and resetting, the moving end 710 leaves from the last reciprocating slide way 910 to enter the return track 930 and is driven by the motion of the moving shell 100 away from the base 210 to move to the step structure 941, and then the step structure 941 falls to the starting point of the resetting track 940 to complete the whole path closed loop.

To achieve the synchronous removal of the gas detecting part 600 existing in the standard gas box 500 at the last movement of the moving case 100 away from the base 210, a lead wire 800 is connected to the guide bar 700, and preferably, one end of the lead wire 800 is connected to the moving end 710 and the other end is connected to an open channel 530 passing through the sidewall of the standard gas box 500 and to the fixture block 532. The open channel 530 on the side wall of the standard gas box 500 is further provided with a first spring 531, one end of the first spring 531 is connected to the channel side wall of the outer side surface of the standard gas box 500, and the other end is connected to the clamping block 532. The latch 532 moves toward the inside of the standard gas box 500 by the elastic force of the first spring 531 and penetrates into a latch groove 541 provided in the inside of the moving stage 540 provided therein. The side area of the movable platform 540 is larger than the opening area of the opened clamping groove 541, a second spring 542 is arranged on one side of the movable platform 540 close to the base 210, the second spring 542 is placed along the direction of the base 210 towards the movable shell 100, and when the clamping block 532 is inserted into the clamping groove 541, the second spring 542 is limited by the movable platform 540 and is configured to be in a compressed state. The end surface of the clamping groove 541 of the clamping block 532, which contacts the second spring 542 to the moving platform 540, is not on the same plane, specifically, the contact surface of the second spring 542 is lower than the horizontal surface of the clamping groove 541 of the clamping block 532. When the movable case 100 is in the reset state, the other end of the movable stage 540, which is away from the second spring 542 connected thereto, extends toward the movable case 100 and passes out of the standard gas box 500 until passing out of the movable case 100 such that one end face thereof is flush with the outer surface of the movable case 100. In the section of the mobile station 540 inside the standard gas box 500, a through hole space is provided in such a manner that the inside is hollowed out, and this through hole space has at least one opening communicating with the outside gas, preferably two openings opened in the side wall of the mobile station 540, and the central axis direction of these two openings is the same as the gas flow direction. A gas detecting part 600 is provided at a physical position not opened in the through hole space, and other electronic components for supporting the gas detecting part 600 may be provided in the through hole space or other cavities opened in the moving stage 540. The amount of compression of the second spring 542 and the mounting position of the gas detecting portion 600 cooperate so that the gas detecting portion 600 can be ensured to be completely removed from the standard gas cartridge 500 when the second spring 542 is decompressed and restored. The moving stage 540 may be configured in a cylindrical configuration, and in order to prevent a large amount of leakage of the standard gas caused when the moving stage 540 is ejected by the second spring 542, the moving stage 540 is provided with an insulation film at the exit opening of the surface of the standard gas box 500, the insulation film is disposed in accordance with the cross-sectional configuration of the moving stage 540, here, it is generally configured in a circular ring shape, the outer circular ring of which is fixedly connected to the surface of the standard gas box 500, and the other end is contacted to the side wall of the moving stage 540 by its own tightening force, instead of being connected, so that the insulation film is always sleeved at the side of the moving stage 540 during the movement of the moving stage 540, the leakage of a large amount of gas is prevented and the exit of the gas detecting part 600 is not affected.

The length of the lead wire 800 is set to ensure that it is in a relaxed state when moving from at least the starting point of the reset runway 940 to the starting point of the last reciprocating slide 910 while following the moving end 710 and is in a tensioned state and pulls the latch 532 completely out of the catch 541 all the time during the movement of the last reciprocating slide 910 or at least when it moves to the ending point of the last reciprocating slide 910. This ensures that the degree of freedom of movement of the movable stage 540 is unlocked when the user presses the movable housing 100 last time, and moves in a direction away from the base 210 along with the movable housing 100 when the user releases his or her hand, and since the reset length of the second spring 542 is longer than the length of the compressed state thereof, the movable stage 540 is protruded outside the surface of the movable housing 100 at the end of movement, thereby forming a two-stage button 543. Also at this time, since the lead wire 800 follows the moving end 710 to enter the return track 930 and then to enter the reset track 940, it becomes a relaxed state, the pulling force on the latch 532 disappears, and the latch 532 has a tendency to move into the standard gas box 500 by the restoring force of the first spring 531, but at this time, the latch 532 is blocked by the solid wall of the moving stage 540 because it is not aligned with the latch 541. At this time, the gas detection unit 600 starts to operate and transmits the detected data to the mobile device for processing, and the wireless transmission/reception unit may be used here, and the processing may be performed as described in embodiment 1.

After the gas detection is completed, the user presses the two sections of buttons 543 formed by the protrusion of the moving platform 540 outside the moving shell 100 to be level with the surface of the moving shell 100, so that the moving platform 540 moves along the direction close to the base 210, and when the clamping groove 541 moves to a position aligned with the clamping block 532, the first spring 531 drives the clamping block 532 to be inserted into the clamping groove 541 to form a limiting effect. Thus, a complete ventilation, detection and reset process is completed, and the user can check the result of the gas detection on the mobile device to obtain the desired information.

During the first several times of pressing by the user, one end of the mobile station 540 may penetrate the surface of the mobile housing 100 and press the finger of the user due to the limited relationship between the latch 532 and the latch 541, which may cause discomfort to the user. A simple solution is to locate the mobile station 540 off-center from the shape center of the mobile case 100, away from the center of gravity of the user's finger force, thereby alleviating the user's discomfort.

The present invention thus provides a mobile gas detection system, most of which is characterized in that it is similar to a mobile gas detection device described above, except that the system provides a mobile device having at least data processing capability, wherein the detection data of the gas detection section is uploaded to the mobile device and processed thereby to obtain a final detection result.

It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A mobile gas detection device, comprising:

the base (210) and the movable shell (100) are enmeshed to form a hollow structure, the hollow space is provided with a detection chamber for placing external gas for convenient detection,

the first air port (211) is arranged on the periphery of the detection chamber and is used for forming a circulation channel of the air inside and outside the detection chamber,

it is characterized in that the method comprises the steps of,

the external gas and the gas in the detection chamber passively enter or exit the detection chamber along with the reciprocating motion generated by the movable shell (100) under the action of external force, the external gas contacts with the gas detection part (600) which is simultaneously moved out from the standard gas box (500) in the entering process of reaching the end of the preset times of reciprocating motion,

The external force for driving the movable housing (100) comes from an actuator (400), the actuator (400) is electrically connected to a control part (1000), the control part (1000) can control the actuator (400) to drive the movable housing (100) to move for a limited number of times and a limited degree of movement according to the preset number of times and the limited degree of movement of the internal program of the control part (1000) by sending instructions,

wherein the number of movements is an accumulated value of the number of times the movable housing (100) makes a reciprocating movement toward and away from the base (210), and the degree of movement is positively correlated with the amount of change in the detection chamber volume.

2. The detection device according to claim 1, characterized in that when the control part (1000) detects that the number of movements is about to reach a threshold value, i.e. the movement of the moving housing (100) is about to be performed the last time away from the base (210), the control part (1000) sends a door opening command to a switch hatch (520) provided on the standard gas box (500) electrically connected thereto, and simultaneously sends a removal command to a removal device (510) provided in the standard gas box (500) electrically connected thereto, the gas detection part (600) being provided on the removal device (510) and being removed by the removal device (510) from outside the standard gas box (500) at this time from the open switch hatch (520) to enter the detection chamber.

3. The detection apparatus according to claim 1, wherein the control portion (1000) controls a relationship between a number of movements of the moving housing (100) and a degree of the movements so that the degree of the movements gradually decreases as the number of the movements increases.

4. The detection device according to claim 1, wherein the external force is from a manual operation of a user, wherein an elastic body (300) is arranged between the movable housing (100) and the base (210), and a multi-stage limit part (900) is further arranged on the base (210), a guide rod (700) is arranged on the movable housing (100), one end of the guide rod (700) close to the base (210) is bent away from an axial direction to form a movable end (710), a sliding connection is formed between the movable end (710) and the multi-stage limit part (900), and the guide rod (700) is configured to be prestressed to have a deflection force deflected towards a preset direction.

5. The detecting device according to claim 4, wherein the multi-stage limiting portion (900) comprises a plurality of sets of reciprocating slide ways (910) having different lengths and guide ribs (920) dividing the boundary line between adjacent reciprocating slide ways (910), the reciprocating slide ways (910) are divided into at least two runways, the two runways are separated by a partition plate, the partition plate is provided with a notch (913) at one end of the runways near the movable housing (100),

The guide rib (920) extends parallel to the path of the reciprocating slide way (910), the extending length of the guide rib is smaller than the path length of the reciprocating slide way (910), and one end of the guide rib (920) close to the base (210) is in an inclined structure in which the inclined direction is inclined towards the moving shell (100) from a corresponding point passing through the first transverse moving direction of the moving end (710).

6. The apparatus of claim 5, wherein the runway end point of the last reciprocating chute (910) is in communication with the start point of the return chute (930), the end point of the return chute (930) extension is coplanar with the start point of the first reciprocating chute (910),

the end point of the return runway (930) is communicated with the start point of the return runway (940), the bottom of the return runway (940) is lower than the bottom of the return runway (930) to form a step structure (941) at the junction of the return runway (930) and the return runway, the end point of the extension of the return runway (940) is communicated with the start point of the first reciprocating slide way (910), a ramp structure (942) which is lifted upwards along the bottom of the return runway (940) and extends to the start point of the first reciprocating slide way (910) is arranged at the junction,

wherein, the first reciprocating slide way (910) and the last reciprocating slide way (910) are judged according to the sequence of contact time in the moving process of the moving end (710) along with the change of time.

7. The detecting device according to claim 6, wherein the lead wire (800) is connected to the lead rod (700), the other end of the lead wire passes through the opening channel (530) of the side wall of the standard gas box (500) and is connected to the clamping block (532), the opening channel (530) is provided with a first spring (531) with one end fixed and the other end connected to the clamping block (532),

still be equipped with mobile station (540) in standard gas box (500), mobile station (540) one end is worn out standard gas box (500) and continues to extend out remove shell (100), be provided with gas detection portion (600) on mobile station (540), mobile station (540) lateral wall be provided with can with fixture block (532) connect spacing draw-in groove (541), wherein mobile station (540) bottom still is provided with second spring (542), works as fixture block (532) connect when inserting spacing with draw-in groove (541), second spring (542) are compressed state.

8. The detection device according to claim 7, characterized in that the length of the lead wire (800) is set to ensure that it is in a relaxed state at least when moving from the start point of the reset runway (940) to the start point of the last reciprocating ramp (910) following the movement of the moving end (710), and is in a tensioned state throughout the reciprocating movement at the last reciprocating ramp (910) or at least when it moves to the end point of the last reciprocating ramp (910) and pulls the catch (532) completely out of the catch (541).

9. A mobile gas detection system employing the detection apparatus of claim 1, comprising:

a mobile device capable of at least data processing calculations,

it is characterized in that the method comprises the steps of,

the external gas and the gas in the detection chamber passively enter or exit the detection chamber along with the reciprocating motion generated by the movable shell (100) under the action of external force, the external gas contacts with a gas detection part (600) which is simultaneously moved out from a standard gas box (500) in the entering process of reaching the end of the preset times of reciprocating motion, and the data generated by the external gas detection part (600) are processed in the movable equipment and form a final result.