CN214373116U - Differential pressure sensor detection device and differential pressure sensor detection system - Google Patents
Differential pressure sensor detection device and differential pressure sensor detection system Download PDFInfo
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- CN214373116U CN214373116U CN202120502840.3U CN202120502840U CN214373116U CN 214373116 U CN214373116 U CN 214373116U CN 202120502840 U CN202120502840 U CN 202120502840U CN 214373116 U CN214373116 U CN 214373116U
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- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 25
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a differential pressure sensor detection device and differential pressure sensor detecting system. Wherein the differential pressure sensor detecting device includes: the main body shell is provided with a main body cavity, and the main body shell is provided with a vent hole communicated with the main body cavity; the circuit board is arranged in the main body cavity, is provided with a communication hole, is communicated with the vent hole and is used for mounting the differential pressure sensor; and the auxiliary shell is provided with an auxiliary cavity, the two opposite sides of the auxiliary shell are provided with through holes communicated with the auxiliary cavity, the auxiliary shell is fixedly connected with the main shell, and one through hole corresponds to and is communicated with the air vent. The technical scheme of the utility model whether can detect differential pressure sensor leaks gas to guarantee test result's accuracy.
Description
Technical Field
The utility model relates to a differential pressure sensor technical field, in particular to differential pressure sensor detection device and differential pressure sensor detecting system.
Background
The differential pressure sensor is generally an MEMS differential pressure sensor, is a sensor for measuring a difference value between two pressures by adopting a micro-nano processing chip, and is generally used for measuring the pressure difference between the front side and the rear side of certain equipment or part. The phenomenon of air leakage often can appear in differential pressure sensor at the testing process, and lack the detection device who detects whether it leaks gas at present, and then lead to the testing result unstable, and the testing result accuracy is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a differential pressure sensor detection device and differential pressure sensor detecting system aim at detecting whether differential pressure sensor leaks gas to guarantee test result's accuracy.
In order to achieve the above object, the utility model provides a differential pressure sensor detection device for detect differential pressure sensing, include: the main body shell is provided with a main body cavity, and the main body shell is provided with a vent hole communicated with the main body cavity; the circuit board is arranged in the main body cavity, is provided with a communication hole, is communicated with the vent hole and is used for mounting the differential pressure sensor; and the auxiliary shell is provided with an auxiliary cavity, the two opposite sides of the auxiliary shell are provided with through holes communicated with the auxiliary cavity, the auxiliary shell is fixedly connected with the main shell, and one through hole corresponds to and is communicated with the air vent.
In an optional embodiment, the differential pressure sensor detection device further comprises a first sealing member disposed between the main body housing and the auxiliary housing for sealing a gap between the main body housing and the auxiliary housing.
In an optional embodiment, the circuit board is detachably disposed on an inner wall of the main body casing, where the vent hole is disposed, and the communication hole corresponds to and communicates with the vent hole; the differential pressure sensor detection device further comprises a second sealing element, wherein the second sealing element is arranged between the circuit board and the main body shell and used for sealing a gap between the circuit board and the main body shell.
In an optional embodiment, the main body shell includes a first shell and a second shell that are detachably connected, the first shell and the second shell enclose to form the main body cavity, and the vent hole is opened in the second shell and communicated with the main body cavity; the circuit board is arranged on the inner wall of the vent hole in the second shell, the vent hole corresponds to and is communicated with the vent hole, and the auxiliary shell is fixed on the second shell.
In an optional embodiment, the differential pressure sensor detection device further includes a third sealing member, which is disposed at a connection between the first casing and the second casing, and is used for sealing a gap between the first casing and the second casing.
In an optional embodiment, the differential pressure sensor detection device further includes a processor, and the processor is electrically connected to the circuit board through a wire and used for processing signals to obtain a detection result.
In an optional embodiment, the differential pressure sensor detection device further comprises a control box, wherein the control box is provided with a main control board, a switch button and a detection button, the main control board is electrically connected to the circuit board through a wire, and the switch button and the detection button are electrically connected to the main control board through wires.
In an optional embodiment, the control box is further provided with a display screen, and the display screen is electrically connected to the processor through a wire and used for displaying the detection result.
The utility model also provides a differential pressure sensor detecting system, include: differential pressure sensor and differential pressure sensor detection device, differential pressure sensor detection device includes: the main body shell is provided with a main body cavity, and the main body shell is provided with a vent hole communicated with the main body cavity; the circuit board is arranged in the main body cavity, is provided with a communication hole, is communicated with the vent hole and is used for mounting the differential pressure sensor; the auxiliary shell is provided with an auxiliary cavity, through holes communicated with the auxiliary cavity are formed in two opposite sides of the auxiliary shell, the auxiliary shell is fixedly connected to the main body shell, and one through hole corresponds to and is communicated with the vent hole; the differential pressure sensor is fixed on a circuit board of the differential pressure sensor detection device and is electrically connected to the circuit board.
In an optional embodiment, the differential pressure sensor includes a substrate, a differential pressure sensor chip and a housing, the housing and the substrate enclose to form an accommodating cavity, the substrate is provided with a first air flow hole communicated with the accommodating cavity, the housing is provided with a second air flow hole communicated with the accommodating cavity, and the differential pressure sensor is arranged on the surface of the substrate in the accommodating cavity and corresponds to the first air flow hole; the substrate is fixed on the circuit board and is electrically connected with the circuit board, and the second airflow through hole corresponds to and is communicated with the communicating hole.
The technical scheme of the utility model, differential pressure sensor detection device includes main part shell, circuit board and supplementary shell, sets up the air vent in its main part chamber of intercommunication at the main part shell, sets up the intercommunicating pore at the circuit board, all sets up the perforating hole in its supplementary chamber of intercommunication in the relative both sides of supplementary shell to locate the main part intracavity with the circuit board, so that the intercommunicating pore communicates in the air vent, will assist shell fixed connection in main part shell simultaneously, so that a perforating hole corresponds and communicates in the air vent. Such structure sets up, when detecting differential pressure sensor, be fixed in differential pressure sensor circuit board, differential pressure sensor has just separated into two independent cavities with detection device like this, wherein it is located one side cavity intercommunication atmosphere of differential pressure sensor orientation auxiliary chamber, one side cavity is closed the cavity in addition, so can be through the atmospheric pressure that detects two cavities, whether appear the difference according to the two atmospheric pressure and judge differential pressure sensor and leak gas, if the atmospheric pressure of two cavities has the difference promptly, then indicate differential pressure sensor and leak gas, and then be favorable to guaranteeing the accuracy of differential pressure sensor test result. And, the utility model discloses a differential pressure sensor detection device structure sets up comparatively simply, and the cost of manufacture is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a differential pressure sensor detection device according to the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the differential pressure sensor sensing device of FIG. 1;
fig. 3 is a schematic cross-sectional view of the differential pressure sensor of fig. 2.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a differential pressure sensor detection device 100 for detect differential pressure sensor 200, mainly detect whether differential pressure sensor 200 leaks gas.
Referring to fig. 1 and 2, in an embodiment of the present invention, a differential pressure sensor detecting device 100 includes: the main body shell 10, the main body shell 10 has a main body cavity 10a, the main body shell 10 has a vent hole 121 communicated with the main body cavity 10 a; a circuit board 20, the circuit board 20 is arranged in the main body cavity 10a, the circuit board 20 is provided with a communication hole 21, the communication hole 21 is communicated with the vent hole 121, and the circuit board 20 is used for mounting the differential pressure sensor 200; and the auxiliary shell 30, the auxiliary shell 30 has an auxiliary cavity 30a, the opposite sides of the auxiliary shell 30 are both opened with through holes 31 communicating with the auxiliary cavity 30a, the auxiliary shell 30 is fixedly connected to the main body shell 10, and one through hole 31 corresponds to and communicates with the vent hole 121.
Specifically, the main body case 10 is made of metal, and has a firm and reliable structure, a main body cavity 10a is formed in the main body case 10, a vent hole 121 communicating with the main body cavity 10a is formed on one surface of the main body case 10, a communication hole 21 penetrating through the two surfaces is formed on the circuit board 20, and the circuit board 20 is fixed in the main body case 10 such that the communication hole 21 is communicated with the vent hole 121. The fixing means of the circuit board 20 may be a snap fixing, a screw fixing or other reasonable and effective fixing means. When the differential pressure sensor 200 is mounted, the differential pressure sensor 200 is fixed to the circuit board 20 corresponding to the communication hole 21 and is electrically connected to the circuit board 20. The material of auxiliary housing 30 also can select to be metal, and sound construction is reliable, and its inside is formed with auxiliary chamber 30a, and the perforating hole 31 of supplementary chamber 30a of intercommunication is all seted up to the relative both sides of auxiliary housing 30, and auxiliary housing 30 fixed connection is in main part shell 10, and makes one of them through-hole and air vent 121 correspond and be linked together, and wherein two fixed connection mode can select for buckle fixing, screw fixation or other reasonable and effectual fixed modes. Auxiliary shell 30 is fixed with main body shell 10, and after differential pressure sensor 200 installed in circuit board 20, differential pressure sensor 200 just separated it into two independent cavities, wherein lie in differential pressure sensor 200 towards one side cavity intercommunication atmosphere of auxiliary chamber 30a, the cavity of one side is closed cavity in addition, so can judge whether differential pressure sensor 200 leaks gas according to whether difference appears in two atmospheric pressures through detecting the atmospheric pressure of two cavities, if the atmospheric pressure of two cavities has the difference, then indicate differential pressure sensor 200 and leak gas.
It can be understood that, according to the technical solution of the present invention, the differential pressure sensor detecting device 100 comprises a main body case 10, a circuit board 20 and an auxiliary case 30, wherein the main body case 10 is provided with an air vent 121 communicating with a main body cavity 10a thereof, the circuit board 20 is provided with a communication hole 21, two opposite sides of the auxiliary case 30 are provided with through holes 31 communicating with an auxiliary cavity 30a thereof, and the circuit board 20 is arranged in the main body cavity 10a, so that the communication hole 21 is communicated with the air vent 121, and the auxiliary case 30 is fixedly connected to the main body case 10, so that one through hole 31 corresponds to and is communicated with the air vent 121. Such structure sets up, when detecting differential pressure sensor 200, install differential pressure sensor 200 at circuit board 20, differential pressure sensor 200 has just separated into two independent cavities with detection device like this, wherein it communicates the atmosphere to be located one side cavity that differential pressure sensor 200 faces supplementary chamber 30a, one side cavity is for sealing the cavity in addition, so can be through the atmospheric pressure that detects two cavities, whether appear the difference according to the two atmospheric pressure and judge differential pressure sensor 200 and leak gas, if the atmospheric pressure of two cavities has the difference, then show differential pressure sensor 200 and leak gas, and then be favorable to guaranteeing the accuracy of differential pressure sensor 200 test result. And, the utility model discloses a differential pressure sensor detection device 100 structure sets up comparatively simply, and the cost of manufacture is lower.
In an alternative embodiment, the differential pressure sensor detecting device 100 further includes a first sealing member 40, and the first sealing member 40 is disposed between the main body case 10 and the auxiliary case 30 for sealing a gap between the main body case 10 and the auxiliary case 30.
The first sealing member 40 may be a sealing ring, and is disposed between the main body case 10 and the auxiliary case 30 for sealing a gap therebetween, so as to effectively prevent gas from flowing out from the gap, thereby effectively ensuring that a chamber on a side of the differential pressure sensor 200 facing the auxiliary chamber 30a has a relatively accurate gas pressure, and ensuring the accuracy of detection of the differential pressure sensor 200.
In an alternative embodiment, referring to fig. 2, the circuit board 20 is detachably disposed on the inner wall of the main body case 10 where the vent hole 121 is disposed, and the communication hole 21 corresponds to and communicates with the vent hole 121; the differential pressure sensor detecting device 100 further includes a second sealing member 50, and the second sealing member 50 is disposed between the circuit board 20 and the main body case 10 for sealing a gap between the circuit board 20 and the main body case 10.
The circuit board 20 may be fixed to the inner wall of the main body case 10 where the vent hole 121 is formed by using screws, and the fixed communication hole 21 corresponds to and communicates with the vent hole 121. The second sealing element 50 may be in the shape of a sealing ring, and the second sealing element 50 is disposed between the circuit board 20 and the inner wall of the main body case 10 for sealing a gap therebetween, so that gas of the two chambers can be effectively prevented from flowing through the gap therebetween, thereby further ensuring the accuracy of detection of the differential pressure sensor 200.
In an alternative embodiment, in order to facilitate the fixing operation of the circuit board 20 and ensure the stability of the circuit board 20, the inner wall of the main body case 10 provided with the vent holes 121 forms a limiting groove (not labeled), the limiting groove is an annular structure, the circuit board 20 is fixed on the bottom wall of the limiting groove by screws, and the fixing manner is simple and effective. Further, the size of the limiting groove is matched with the size of the circuit board 20, so that the arrangement stability of the circuit board 20 can be effectively enhanced.
In an alternative embodiment, referring to fig. 2, the main body housing 10 includes a first housing 11 and a second housing 12 detachably connected, the first housing 11 and the second housing 12 enclose a main body cavity 10a, and the vent hole 121 is opened in the second housing 12 and communicated with the main body cavity 10 a; the circuit board 20 is disposed on the inner wall of the second housing 12 having the vent hole 121, the communication hole 21 corresponds to and communicates with the vent hole 121, and the auxiliary case 30 is fixed to the second housing 12.
In this embodiment, the main body case 10 adopts a split structure, including the first case 11 and the second case 12 which can be detachably connected, the detachable connection mode can be a snap connection, a screw connection or other reasonable and effective connection modes, and the two are connected and then jointly enclosed to form the main body cavity 10 a. The vent hole 121 is formed in the bottom of the second housing 12, a limiting groove is formed in the bottom of the second housing 12, the circuit board 20 is fixed in the limiting groove by screws, and after the circuit board 20 is fixed, the communication hole 21 of the circuit board 20 corresponds to and communicates with the vent hole 121. The auxiliary housing 30 is fixedly connected to the bottom of the second casing 12, and a through hole of the fixed rear auxiliary housing 30 corresponds to and communicates with the vent hole 121.
Such structural arrangement, when detecting differential pressure sensor 200 whether leaks gas, earlier be fixed in differential pressure sensor 200 circuit board 20, then install differential pressure sensor 200's circuit board 20 and be fixed in the spacing inslot of second casing 12 diapire, later with first casing 11 and second casing 12 fixed, will assist shell 30 and second casing 12 fixed, alright accomplish its assembly operation, next test can. The main body case 10, which is constructed in a separate body, facilitates the assembling operation of the differential pressure sensor 200.
In an alternative embodiment, referring to fig. 2, the differential pressure sensor detecting device 100 further includes a third sealing member 60, and the third sealing member 60 is disposed at a connection between the first housing 11 and the second housing 12, and is used for sealing a gap between the first housing 11 and the second housing 12.
Here, the third sealing element 60 may also be a sealing ring-shaped structure, and is disposed at a joint of the first casing 11 and the second casing 12, and is used for sealing a gap between the first casing and the second casing to prevent gas from flowing out from the gap between the first casing and the second casing, so as to ensure that the main body cavity 10a has good sealing performance, which can ensure that a pressure value in the main body cavity 10a is measured accurately, thereby ensuring the accuracy of checking whether the differential pressure sensor 200 leaks gas.
Referring to fig. 1, in an alternative embodiment, the differential pressure sensor detection device 100 further includes a processor 70, and the processor 70 is electrically connected to the circuit board 20 through a wire for signal processing to obtain a detection result.
The processor 70 may be disposed in the main body cavity 10a, or certainly may be disposed outside the main body cavity 10a and electrically connected to the circuit board 20 through a wire, so that the air pressure values of the two chambers measured by the circuit board 20 are transmitted to the processor 70, and after the air pressure values of the two chambers are processed and received, the two air pressure values are compared, and whether a difference exists between the two air pressure values or whether the difference is within a preset range is determined, so as to determine whether the differential pressure sensor 200 leaks air. That is, when there is a difference in the measured pressures of the two chambers, it is determined that the differential pressure sensor 200 has an air leakage phenomenon.
Further, the differential pressure sensor detection device 100 further includes a control box 80, the control box 80 is provided with a main control board, a switch button 81 and a detection button 82, the main control board is electrically connected to the circuit board 20 through a wire, and the switch button 81 and the detection button 82 are both electrically connected to the main control board through wires.
The main control board is used for controlling the start, detection and closing operations of the differential pressure sensor detection device 100, so that the automatic detection operation of the differential pressure sensor 200 can be realized, and the operation is simple and effective.
Further, the control box 80 is further provided with a display screen 83, and the display screen 83 is electrically connected to the processor 70 through a wire for displaying the detection result.
Here, the display screen 83 is used for displaying the detection result, that is, the processor 70 processes the received pressure value signal to obtain the detection result, and displays the detection result on the display screen 83 for the user to refer to, so that the detection result is more intuitive, and the user experience is improved.
It can be understood that, when the differential pressure sensor detection system is used to detect the differential pressure sensor 200, the differential pressure sensor 200 is firstly installed on the circuit board 20, then the circuit board 20 installed with the differential pressure sensor 200 is fixed in the limit groove of the bottom wall of the second housing 12, then the first housing 11 and the second housing 12 are fixed, and the auxiliary housing 30 and the second housing 12 are fixed, so that the assembling operation of the detection device can be completed. Then, detection is carried out, the switch button 81 of the control box 80 is pressed for starting, the detection button 82 is pressed for starting, at the moment, the main control board control circuit board 20 collects the air pressures of the two chambers positioned at the two sides of the differential pressure sensor 200, the air pressure value signals of the two chambers are transmitted to the processor 70, the processor 70 receives the signals and processes the signals, whether a difference exists between the air pressure values of the two chambers is judged, if the difference exists, the air leakage phenomenon of the differential pressure sensor 200 is judged, and then the detection result is displayed on the display screen 83 for the user to refer to. Thus, the automatic detection operation of the differential pressure sensor 200 can be completed, and the operation is simple.
The utility model discloses still provide a differential pressure sensor detecting system, differential pressure sensor detecting system include differential pressure sensor 200 and as before differential pressure sensor detection device 100, this differential pressure sensor detecting system's concrete structure refers to aforementioned embodiment. Since all technical solutions of all the foregoing embodiments are adopted, at least all beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.
Here, the differential pressure sensor 200 is fixed to the circuit board 20 of the differential pressure sensor detecting device 100 and is electrically connected to the circuit board 20. That is, the differential pressure sensor 200 is fixed to the surface of the circuit board 20 in the main body cavity 10a corresponding to the communication hole 21, and the fixing manner may be selected as soldering fixing, so that the operation is simple and firm. In the assembling process, the external bonding pad of the differential pressure sensor 200 is electrically abutted to the welding point on the surface of the circuit board 20, so that the electrical connection between the differential pressure sensor 200 and the circuit board 20 can be realized, the operation of wire bonding is not required, and the operation is simple and effective.
Referring to fig. 3, in an alternative embodiment, the differential pressure sensor 200 includes a substrate 210, a differential pressure sensor chip 230, and a housing 220, the housing 220 and the substrate 210 enclose to form an accommodating cavity, the substrate 210 is provided with a first air flow hole 211 communicated with the accommodating cavity, the housing 220 is provided with a second air flow hole 221 communicated with the accommodating cavity, and the differential pressure sensor chip 230 is disposed on the surface of the substrate 210 in the accommodating cavity and is disposed corresponding to the first air flow hole 211; the substrate 210 is fixed on the circuit board 20 and electrically connected to the circuit board 20, and the second airflow through hole 221 corresponds to and communicates with the communication hole 21.
Specifically, the substrate 210 is a circuit substrate, the housing 220 is a metal housing, the metal housing and the substrate are welded and fixed and enclose to form an accommodating cavity (not labeled), the substrate 210 is provided with a first air flow hole 211, the housing 220 is provided with a second air flow hole 221, the first air flow hole 211 and the second air flow hole 221 are both communicated with the accommodating cavity, the differential pressure sensor chip 230 is fixed on the surface of the substrate 210 in the accommodating cavity by using adhesive, and covers the first air flow hole 211. When the differential pressure sensor 200 is assembled, the substrate 210 of the differential pressure sensor 200 is fixed to the circuit board 20 by solder paste, and the external pad on the outer surface of the substrate 210 electrically abuts against the solder point on the surface of the circuit board 20, so that the first air flow hole 211 corresponds to and communicates with the communication hole 21. Then, the differential pressure sensor 200 and the circuit board 20 are fixed together in the main body case 10, that is, the surface of the circuit board 20 facing away from the differential pressure sensor 200 is fixed on the bottom wall of the main body cavity 10a, and the communication hole 21 is corresponding to and communicated with the vent hole 121 at the bottom of the main body case 10, so that the first air flow hole 211 is communicated with the auxiliary cavity 30a through the communication hole 21 and the vent hole 121, the second air flow hole 221 is communicated with the main body cavity 10a, and further, the air pressure values at the first air flow hole 211 and the second air flow hole 221 are detected, and whether a difference exists between the air pressure values is judged, if so, it is judged that the air leakage phenomenon exists in the differential pressure sensor 200.
Here, the differential pressure sensor chip 230 is a MEMS chip, and has a small size, which is advantageous for the miniaturization of the differential pressure sensor 200.
Further, the differential pressure sensor 200 further includes an integrated circuit chip 240, and the integrated circuit chip 240 is disposed on a surface of the substrate 210 facing the differential pressure sensor chip 230 and electrically connected to the differential pressure sensor chip 230 and the substrate 210 through a conductive wire.
During detection, the differential pressure sensor chip 230 senses air pressure values at the first air flow hole 211 and the second air flow hole 221, deforms under the pressure difference between the two air flow holes, converts physical quantity representing the pressure difference into a pressure signal according to the deformation, then transmits the pressure signal to the integrated circuit chip 240, and the integrated circuit chip 240 receives the pressure signal, processes the pressure signal, and transmits the pressure signal to the substrate 210 and the circuit board 20.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A differential pressure sensor detection device for detecting a differential pressure sensor, comprising:
the main body shell is provided with a main body cavity, and the main body shell is provided with a vent hole communicated with the main body cavity;
the circuit board is arranged in the main body cavity, is provided with a communication hole, is communicated with the vent hole and is used for mounting the differential pressure sensor; and
the auxiliary shell is provided with an auxiliary cavity, the two opposite sides of the auxiliary shell are provided with through holes communicated with the auxiliary cavity, the auxiliary shell is fixedly connected with the main shell, and one through hole corresponds to and is communicated with the air vent.
2. The differential pressure sensor sensing device of claim 1, further comprising a first seal disposed between the main body housing and the auxiliary housing for sealing a gap between the main body housing and the auxiliary housing.
3. The differential pressure sensor detecting device according to claim 1, wherein the circuit board is detachably provided to an inner wall of the main body case where the vent hole is provided, the communication hole corresponding to and communicating with the vent hole;
the differential pressure sensor detection device further comprises a second sealing element, wherein the second sealing element is arranged between the circuit board and the main body shell and used for sealing a gap between the circuit board and the main body shell.
4. The differential pressure sensor sensing device of claim 1, wherein the main body housing comprises a first housing and a second housing that are detachably connected, the first housing and the second housing enclose the main body cavity, and the vent hole is opened in the second housing and communicated with the main body cavity;
the circuit board is arranged on the inner wall of the vent hole in the second shell, the vent hole corresponds to and is communicated with the vent hole, and the auxiliary shell is fixed on the second shell.
5. The differential pressure sensor sensing device of claim 4, further comprising a third seal disposed at a junction of the first housing and the second housing for sealing a gap between the first housing and the second housing.
6. The differential pressure sensor sensing device of any one of claims 1 to 5, further comprising a processor electrically connected to the circuit board by wires for signal processing to derive a sensing result.
7. The differential pressure sensor detecting device according to claim 6, wherein the differential pressure sensor detecting device further comprises a control box, the control box is provided with a main control board, a switch button and a detection button, the main control board is electrically connected to the circuit board through a wire, and the switch button and the detection button are both electrically connected to the main control board through a wire.
8. The differential pressure sensor detecting device according to claim 7, wherein the control box is further provided with a display screen, and the display screen is electrically connected to the processor through a wire for displaying the detection result.
9. A differential pressure sensor detection system, comprising:
a differential pressure sensor; and
the differential pressure sensor sensing device of any one of claims 1-8, the differential pressure sensor being secured to and electrically connected to a circuit board of the differential pressure sensor sensing device.
10. The differential pressure sensor detection system of claim 9, wherein the differential pressure sensor comprises a substrate, a differential pressure sensor chip, and a housing, the housing and the substrate enclose to form a receiving cavity, the substrate is provided with a first air flow hole communicated with the receiving cavity, the housing is provided with a second air flow hole communicated with the receiving cavity, the differential pressure sensor is arranged on the surface of the substrate in the receiving cavity and corresponds to the first air flow hole;
the substrate is fixed on the circuit board and is electrically connected with the circuit board, and the second airflow through hole corresponds to and is communicated with the communicating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120502840.3U CN214373116U (en) | 2021-03-09 | 2021-03-09 | Differential pressure sensor detection device and differential pressure sensor detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120502840.3U CN214373116U (en) | 2021-03-09 | 2021-03-09 | Differential pressure sensor detection device and differential pressure sensor detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214373116U true CN214373116U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120502840.3U Expired - Fee Related CN214373116U (en) | 2021-03-09 | 2021-03-09 | Differential pressure sensor detection device and differential pressure sensor detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214373116U (en) |
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2021
- 2021-03-09 CN CN202120502840.3U patent/CN214373116U/en not_active Expired - Fee Related
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