CN218271255U - Security protection supervisory equipment gas tightness detection device - Google Patents
Security protection supervisory equipment gas tightness detection device Download PDFInfo
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- CN218271255U CN218271255U CN202221968027.6U CN202221968027U CN218271255U CN 218271255 U CN218271255 U CN 218271255U CN 202221968027 U CN202221968027 U CN 202221968027U CN 218271255 U CN218271255 U CN 218271255U
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Abstract
Security protection supervisory equipment gas tightness detection device includes: the security monitoring device comprises a main body provided with a first cavity and a second cavity, wherein the first cavity is configured to accommodate security monitoring equipment to be detected; the security monitoring equipment to be tested is provided with a shell, and the shell comprises at least one openable detection port; a second cavity disposed independently of the first cavity and configured to receive a pump element; a first gas passageway configured to operably connect the pump element and the detection port; a first valve element provided in the first gas passage, and configured to switch the first gas passage on or off in an operable manner; a second gas passageway configured to operatively connect the first gas passageway and an external environment; and a second valve element disposed in the second gas passage and configured to switch the second gas passage on or off. The utility model discloses be convenient for operating personnel detects the operation, starts, breaks, terminates the test and carries out exception handling, uses in a flexible way, can be applicable to multiple security protection supervisory equipment gas tightness and the protective capacities that await measuring and detect.
Description
Technical Field
The utility model belongs to the technical field of electronic equipment, especially, relate to a security protection supervisory equipment gas tightness detection device.
Background
The security monitoring equipment is roughly divided into a television monitoring system, an alarm control system, remote image transmission equipment and the like, and mainly comprises the following monitoring equipment: cloud platform, support, protection casing, monitor, video amplifier, video distributor, video switch, picture splitter, video cassette recorder etc.. From the aspect of using environment, part of security monitoring equipment needs to be used in outdoor environment where people directly get wet with rain and are exposed to the sun, and part of security monitoring equipment also needs to be used in rooms with extreme environmental conditions, such as garages, attics, warehouses, feeding tables and the like. This requires that the security monitoring device meet the adaptability requirements under various climatic environment conditions, including but not limited to water resistance, dust resistance, moisture resistance, etc., and has good shell protection capability.
Before the security monitoring equipment leaves a factory, a shell protection capability test is required, and in the prior art, a tool is usually designed for each kind of equipment to detect. However, with the rapid development of the security monitoring industry, the types of security monitoring equipment are continuously expanded, and in order to meet the requirements of different use environments, more and more special-shaped products are required, and the traditional detection mode results in lower detection efficiency and higher detection cost.
Disclosure of Invention
The utility model discloses to the different detection frock of security protection supervisory equipment design that corresponds among the prior art, because security protection supervisory equipment's kind constantly enlarges, special-shaped product is more and more, leads to traditional detection mode detection efficiency lower and detect problem with high costs, designs and provides a security protection supervisory equipment gas tightness detection device.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides a security protection supervisory equipment gas tightness detection device, includes: a body having: the security monitoring device comprises a first cavity and a second cavity, wherein the first cavity is configured to accommodate security monitoring equipment to be tested; the security monitoring equipment to be detected is provided with a shell, and the shell comprises at least one openable detection port; and a second cavity disposed independently of the first cavity, the second cavity configured to house a pump element; a first gas passageway configured to operatively connect the pump element and the detection port; a first valve element provided in the first gas passage, the first valve element being operable to switch the first gas passage on or off;
a second gas passageway configured to operably connect the detection port and an external environment; and a second valve element provided in the second gas passage, the second valve element being operable to switch on or off the second gas passage.
Further, security protection supervisory equipment gas tightness detection device still includes: the clamp is arranged in the first cavity and configured to fix the security monitoring equipment to be tested; the clamp is provided with: and the communication port is correspondingly connected with the detection port when the to-be-detected security monitoring equipment is detachably and fixedly arranged on the clamp.
Furthermore, the clamp is clamped and fixed with the shell of the security monitoring equipment to be detected.
Further, security protection supervisory equipment gas tightness detection device still includes: the inlet of the detection pipeline is connected with the pump element, the outlet of the detection pipeline is connected with the communication port, and the first valve element is arranged on the detection pipeline; the main body further includes: the third cavity is independent of the first cavity and the second cavity, and the detection pipeline is arranged in the third cavity.
Further, security protection supervisory equipment gas tightness detection device still includes: and the pressure sensor is arranged on the detection pipeline.
Further, the pump element is a negative pressure vacuum pump; security protection supervisory equipment gas tightness detection device still includes: one input end of the control circuit is electrically connected with the first key; the control circuit is configured to receive a first key signal generated by the first key, generate a first driving signal to the first valve element to drive the first valve element to act to conduct the first gas passage, and generate a second driving signal to the negative pressure vacuum pump to drive the negative pressure vacuum pump to operate.
Further, security protection supervisory equipment gas tightness detection device still includes: one input end of the first comparison circuit is electrically connected with the pressure sensor to receive a real-time pressure signal, the other input end of the first comparison circuit inputs a reference pressure signal, and the output end of the first comparison circuit is electrically connected with one input end of the control circuit; the control circuit is configured to receive the first comparison signal generated by the first comparison circuit and generate a third driving signal to the negative-pressure vacuum pump to drive the negative-pressure vacuum pump to stop running.
Furthermore, the other input end of the control circuit is electrically connected with the second key; the control circuit is configured to receive a second key signal generated by the second key and generate a fourth driving signal to the second valve element to drive the second valve element to open the second gas passage.
Further, security protection supervisory equipment gas tightness detection device still includes: the buzzer is arranged above the main body; the buzzer is electrically connected with one output end of the control circuit.
Further, security protection supervisory equipment gas tightness detection device still includes: and the timing circuit is electrically connected with the control circuit.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
the utility model provides a security protection supervisory equipment gas tightness detection device that awaits measuring, first cavity and second cavity through designing mutual independence hold security protection supervisory equipment and the pump element that awaits measuring respectively, realize the separation of test device and test main part, the operating personnel of being convenient for detect the operation, first gas passage and second gas passage mutual independence just can independent control, be convenient for start, interrupt, terminate the test and carry out exception handling, it is nimble to use, can be applicable to multiple security protection supervisory equipment gas tightness and the protective capacities that awaits measuring and detect.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an air tightness detection device for security monitoring equipment provided by the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a security monitoring device to be tested;
fig. 3 is the utility model provides a security protection supervisory equipment gas tightness detection device's circuit structure schematic block diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
To the different detection frock of security protection supervisory equipment design that corresponds among the prior art, because security protection supervisory equipment's kind constantly enlarges, special-shaped product is more and more, leads to the lower problem with high costs that just detects of traditional detection mode detection efficiency, the utility model discloses a particular embodiment provides a security protection supervisory equipment gas tightness detection device. Referring to fig. 1, an air tightness detecting device 10 of a security monitoring device to be detected is mainly composed of a main body 12. The main body 12 may be made of a hard material such as metal or alloy. The main body 12 is provided with a first cavity 14 and a second cavity 18 which are sequentially distributed in the height direction, wherein the first cavity 14 is configured to accommodate a security monitoring device 16 to be tested, the second cavity 18 is independent of the first cavity 14, and the second cavity 18 is configured to accommodate a pump element. In the present invention, the pump element may be a pressure pump or a vacuum pump (20 shown in fig. 1). In the following part of the present embodiment, the negative pressure vacuum pump 20 is preferably described as an example. In this embodiment, the cavity structure that distributes from top to bottom is convenient for operating personnel to install the security protection supervisory equipment 16 that awaits measuring, can keep upright during the installation, alleviates working strength. The negative pressure vacuum pump 20, which is less frequent with respect to maintenance and assembly, is disposed in the second chamber 18, while stable operation of the negative pressure vacuum pump 20 can be ensured.
The security monitoring device 16 under test has a housing 46. According to the service environment of the security monitoring equipment to be detected, the shell needs to have different protection capabilities, namely needs to be kept complete so as to have the capabilities of water prevention, dust prevention and/or moisture prevention. In order to detect the protection capability of the housing, an airtight first gas passage may be formed in the gas tightness detecting device 10 for the security monitoring equipment to be detected, and the first gas passage is configured to operatively connect the negative pressure vacuum pump 20 and the detection port. The detection port is formed on the housing 46 of the security monitoring device to be detected. The test port is configured to be openable and only opened when a protection capability test is performed, for example, in an alternative embodiment, the test port is provided with a cover element (not shown) and a sealing element (not shown) matched with the cover element, and the cover element can be pushed and pulled relative to the test port or clamped at the test port, and can be in other common cover forms, which are not listed here. The first gas passage is provided with a first valve element 22, and the first valve element 22 is operable to switch the first gas passage on or off. When the first valve element 22 switches on the first gas path, the negative pressure vacuum pump 20 acts, the pressure inside the shell 46 of the security monitoring device to be tested is reduced, and due to the action of the atmospheric pressure, the shell 46 of the security monitoring device to be tested can be tightly adsorbed, so that the test environment is kept stable. The pressure inside the shell 46 of the security monitoring equipment to be detected can be further adjusted through the negative pressure vacuum pump 20, and the detection of the protection capability is realized.
A second gas passage can be further formed in the gas tightness detection device 10 of the security monitoring equipment to be detected, and the second gas passage is configured to be operatively connected with the first gas passage and the external environment. The second gas passage is provided with a second valve element 24, and the second valve element 24 is operable to switch the second gas passage on or off. When the second valve element 24 switches to conduct the second gas path, the pressure in the housing 46 can be recovered to the normal atmospheric pressure, so that an accident can be flexibly and effectively handled or the test can be finished, and the operator can conveniently detach the security monitoring device 16 to be tested from the main body 12. The second valve element 24 is a solenoid valve.
In alternative embodiments, the second gas passageway is configured to operatively connect the sensing port to the external environment, and illustratively, the sensing ports connected in the first and second gas passageways may be the same, such as by a three-way connection. Or alternatively, two separate test ports, such as the first test port 48 and the second test port, as will be described in more detail below.
The volume of the first cavity 14 is preferably designed to be several times of the volume of the shell 46 of at least one security monitoring device 16 to be tested, so as to be adapted to different types of security monitoring devices 16 to be tested with different volumes.
The utility model provides a security protection supervisory equipment gas tightness detection device that awaits measuring, the first cavity and the second cavity that hold security protection supervisory equipment and the pump component that awaits measuring respectively through design mutual independence realize the separation of test device and test main part (using negative pressure vacuum pump 20 as an example), the operating personnel of being convenient for carry out the testing operation, first gas passage and second gas passage mutual independence and can independent control, be convenient for start, interrupt, terminate the test and carry out exception handling, it is nimble to use, can be applicable to multiple security protection supervisory equipment gas tightness and the protective capacities that await measuring and detect.
Because the volume of the first cavity 14 is preferably designed to be several times of the volume of the housing of at least one security monitoring device to be tested, in order to adapt to the test of products with smaller volumes at the same time, one or more detection positions are preferably designed in the first cavity 14. Each detection position is optionally provided with a clamp 26, and the clamp 26 is configured to fix the security monitoring device 16 to be detected. In an alternative embodiment, the housing 46 includes a first detection port 48 and a second detection port that are independently openable. Correspondingly, the clamp 26 is provided with a communication port; for example, the first communication port and the second communication port are exemplarily opened. When the security monitoring device 16 to be detected is detachably and fixedly arranged on the clamp 26, the communication port is correspondingly connected with the detection port, for example, the first communication port is correspondingly connected with the first detection port 48, and the second communication port is correspondingly connected with the second detection port. Thereby through anchor clamps 26 that have first intercommunication mouth and second intercommunication mouth, realize the security protection supervisory equipment 16's that awaits measuring fixed on the one hand, on the other hand realizes first gas passage and second gas passage's connection, avoids the pipeline to stretch into in first cavity 14 and the security protection supervisory equipment 16 that awaits measuring to take place the winding condition such as gas leakage that appears, influence the detection process.
As shown in fig. 2, in one aspect, the clamp 26 is preferably fastened to the housing 46 of the security monitoring device 16 to be tested, for example, by a fastening element 50, and the fastening element 50 is preferably disposed on an outer wall of the housing 46, for example, between the first detection port 48 and the second detection port. On the other hand, the clamp 26 is preferably fixedly connected with the main body 12 in a detachable mode, so that the size of the clamp 26 can be changed when different equipment is detected, and flexible detection is achieved. The clamping element 50 is arranged between the first detection port 48 and the second detection port, so that the security monitoring device 16 to be detected in the installation state can be kept horizontal, and the air leakage is avoided.
In terms of pipeline design, the device 10 for detecting the air tightness of the security monitoring equipment to be detected further comprises a detection pipeline 28. The inlet of the detection pipeline 28 is connected with the negative pressure vacuum pump 20, and the outlet of the detection pipeline 28 is connected with the first communication port. The detection pipeline 28 is made of a pipe material with good air tightness. The first valve element 22 is provided on the detection line 28, and operates to switch on or off the first gas passage. The first valve element 22 is preferably a solenoid valve. The main body 12 of the detection circuit 28 is disposed in a third cavity 30, and the third cavity 30 is disposed separately from the first cavity 14 and the second cavity 18 and is located at one side of the second cavity 18, so as to facilitate maintenance and replacement.
The universal wheel 44 is arranged below the main body 12, so that the air tightness detection device 10 of the security monitoring equipment to be detected can be conveniently moved to an ideal test environment for detection; a buzzer 42 is provided above the main body 12.
Referring to fig. 3, a circuit structure of the air tightness detecting device of the security monitoring device to be detected is described. When the airtightness, or the protective ability, of the casing reaches a desired level, the pressure in the first gas passage and the casing changes with a change in the set pressure of the negative pressure vacuum pump 20; when the airtightness of the casing, or the protective ability, does not reach a desired level, that is, the casing has holes, cracks, or the like, the pressure in the first gas passage and the casing does not linearly change with the set pressure of the negative pressure vacuum pump 20. For accurate detection, the device 10 for detecting the air tightness of the security monitoring device to be detected further includes a pressure sensor 32, and the pressure sensor 32 is disposed on the detection pipeline 28, for example, at an end close to the clamp 26. Since the housing 46, the clamp 26 detection line 28, and the negative pressure vacuum pump 20 are in fluid communication and hermetically connected to form the first gas passage when the first valve element 22 is opened, the real-time pressure in the housing 46 can be accurately detected by the pressure sensor 32.
The vacuum pump 20, the first valve element 22 and the second valve element 24 are all controlled by a control circuit 52. Illustratively, the multiple outputs of the control circuit 52 are each electrically connected to the vacuum pump 20, the first valve element 22, and the second valve element 24 to output multiple drive signals. The operation of the control circuit 52 is generated by the operation of the first button 36 or the second button 38, or may be generated based on the detection value of the pressure sensor 32. Illustratively, multiple inputs of the control circuit 52 are each electrically connected to the outputs of the first key 36, the second key 38, and the first comparison circuit 54 to receive the key signal or the comparison signal.
Specifically, one input terminal of the control circuit 52 is electrically connected to the first key 36. The control circuit 52 is configured to receive the first key signal generated by the first key 36, generate a first driving signal to the first valve element 22 to drive the first valve element 22 to open the first gas passage, and generate a second driving signal to the vacuum pump 20 to drive the vacuum pump 20 to operate. On the other hand, another input end of the control circuit 52 is electrically connected to the output end of the first comparison circuit 54, one input end of the first comparison circuit 54 is electrically connected to the pressure sensor 32 to receive the real-time pressure signal, and another input end of the first comparison circuit 54 is input with the reference pressure signal, and the control circuit 52 is configured to receive the first comparison signal generated by the first comparison circuit 54 and generate a third driving signal to the negative vacuum pump 20 to drive the negative vacuum pump 20 to stop operating. The first comparison signal is preferably an active level signal (high level signal or low level signal). Illustratively, in an initial state, due to the action of the negative pressure vacuum pump 20, the air pressure in the first gas passage starts to decrease, under the action of the atmospheric pressure, the housing 46 of the security monitoring device 16 to be tested is tightly adsorbed to the clamp 26, the negative pressure vacuum pump 20 maintains an operating state, the pressure in the first gas passage continues to decrease, when the pressure in the first gas passage is lower than the reference pressure signal, the first comparison circuit 54 generates and outputs a first comparison signal to the control circuit 52, and the control circuit 52 receives the first comparison signal and generates a third driving signal to the negative pressure vacuum pump 20 to drive the negative pressure vacuum pump 20 to stop operating, that is, the negative pressure vacuum pump 20 stops operating. If the shell 46 has poor air tightness, after the negative pressure vacuum pump 20 stops working, the air pressure in the first air passage starts to rise, when the air pressure in the first air passage rises and is greater than the reference pressure signal, the first comparison circuit 54 does not output the first comparison signal any more, the control circuit 52 recovers to generate the second driving signal to the negative pressure vacuum pump 20 to drive the negative pressure vacuum pump 20 to run again, and retest can be carried out, so that an operator can find a hidden trouble point with poor protection performance.
Optionally, an ultrasonic detection device (not shown) may be disposed in the first cavity 14, and when the air tightness of the casing 46 is poor, the ultrasonic leak detection may be further performed.
In order to realize more accurate detection, the air tightness detection device 10 for the security monitoring equipment to be detected further comprises a timing circuit 56, and the timing circuit 56 is electrically connected with the control circuit 52. Illustratively, the timing circuit 56 optionally accumulates the time period during which the first comparison signal is generated. The output end of the timing circuit 56 is connected to one input end of the second comparing circuit, the other input end of the second comparing circuit inputs the reference time length signal, and the output end of the second comparing circuit is connected to the input end of the control circuit 52. When the accumulated time period for generating the first comparison signal is greater than the reference time period signal, the second comparison circuit outputs a first warning level signal to the control circuit 52, which indicates that the pressure in the first gas path does not reach the ideal pressure state within the predetermined time period, and the protection performance of the housing 46 cannot meet the requirement. The output end of the control circuit 52 is optionally electrically connected with the buzzer 42, the control circuit 52 outputs an early warning driving signal to the buzzer 42 after receiving the first early warning level signal, the buzzer 42 alarms, and the protection performance of the early warning shell 46 cannot meet the requirement.
Illustratively, in an alternative embodiment, when the control circuit 52 receives the first comparison signal generated by the first comparison circuit 54, generates a third driving signal to the negative pressure vacuum pump 20 to drive the negative pressure vacuum pump 20 to stop operating, and also generates a fifth driving signal to the first valve element 22 to drive the first valve element 22 to act to close the first gas passage, i.e. enter the pressure maintaining stage. During the pressure holding phase, the pressure of the first gas passage at the starting time and the ending time of the set time period is optionally recorded, the actual pressure difference between the starting time and the ending time is calculated (for example, through an addition and subtraction circuit), and the actual pressure difference and the reference pressure difference are compared by using a third comparison circuit. When the actual pressure difference is higher than the reference pressure difference, the third comparing circuit outputs a second warning level signal to the control circuit 52, which indicates that the pressure in the first gas passage fluctuates significantly in a short time, and the protection performance of the housing 46 cannot meet the requirement. After receiving the second early warning level signal, the control circuit 52 outputs an early warning driving signal to the buzzer 42, the buzzer 42 gives an alarm, and the protection performance of the early warning shell 46 cannot meet the requirement.
After the test procedure is ended or the buzzer 42 gives an alarm, the operator may operate the second key 38. The control circuit 52 receives the signal of the second key 38 output by the second key 38 electrically connected with the control circuit, generates a fourth driving signal to the second valve element 24 to drive the second valve element 24 to act and conduct the second gas passage, the normal pressure in the shell 46 is recovered, the qualified product to be detected is allowed to flow into the next production, manufacturing and packaging link, and the early-warning product is subjected to further ultrasonic leakage point detection or flows into the defective product processing link.
The first key 36, the second key 38 may be mechanical keys, membrane keys, or other types of keys.
In an alternative embodiment, the control circuit 52 is implemented by a single chip, the first comparison circuit, the second comparison circuit and the third comparison circuit can be implemented by an operational circuit with an operational amplifier as a core, and the timing circuit 56 is implemented by an independent timing chip; in another optional embodiment, the first comparing circuit, the second comparing circuit, and the third comparing circuit may also be implemented by a single chip that implements the control circuit 52, and the timing chip may also be implemented by a single chip that implements the control circuit 52; the control circuit 52, the first comparison circuit, the second comparison circuit, the third comparison circuit, and the timing circuit 56 may be implemented by other circuits that can implement the same function. The analog-to-digital conversion circuit or the digital-to-analog conversion circuit that may be used herein are well-known in the art, and are not listed here.
The control circuit 52, the first comparison circuit 54, and the timing circuit 56 are preferably disposed in the electronics box 34. The outer side of the electrical box 34 is optionally provided with a man-machine interface 40, a first key 36 and a second key 38. The electronics box 34 is preferably disposed within the first chamber 14 for manual operation by an operator.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the form and details of the embodiments may be made, or equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed in the appended claims.
Claims (10)
1. The utility model provides a security protection supervisory equipment gas tightness detection device which characterized in that includes:
a body having:
the security monitoring device comprises a first cavity, a second cavity and a first sensor, wherein the first cavity is configured to accommodate security monitoring equipment to be detected; the security monitoring equipment to be detected is provided with a shell, and the shell comprises at least one openable detection port; and
a second cavity disposed independently of the first cavity, the second cavity configured to house a pump element;
a first gas passageway configured to operatively connect the pump element and the detection port;
a first valve element provided in the first gas passage, the first valve element being operable to switch the first gas passage on or off;
a second gas passageway configured to operably connect the first gas passageway and an external environment; and
a second valve element provided to the second gas passage, the second valve element being operable to switch on or off the second gas passage.
2. The airtightness detection device for security monitoring equipment according to claim 1,
security protection supervisory equipment gas tightness detection device still includes:
the clamp is arranged in the first cavity and configured to fix the security monitoring equipment to be tested;
the clamp is provided with:
and the communication port is correspondingly connected with the detection port when the to-be-detected security monitoring equipment is detachably and fixedly arranged on the clamp.
3. The airtightness detection device for security monitoring equipment according to claim 2,
the clamp is clamped and fixed with the shell of the security monitoring equipment to be detected.
4. The security monitoring device airtightness detection apparatus according to claim 2,
security protection supervisory equipment gas tightness detection device still includes:
the inlet of the detection pipeline is connected with the pump element, the outlet of the detection pipeline is connected with the communication port, and the first valve element is arranged on the detection pipeline;
the main body further includes:
the third cavity is independent of the first cavity and the second cavity, and the detection pipeline is arranged in the third cavity.
5. The security monitoring equipment airtightness detection device according to claim 4, characterized in that:
security protection supervisory equipment gas tightness detection device still includes:
and the pressure sensor is arranged on the detection pipeline.
6. The security monitoring equipment airtightness detection device according to claim 5, characterized in that:
the pump element is a negative pressure vacuum pump;
security protection supervisory equipment gas tightness detection device still includes:
one input end of the control circuit is electrically connected with the first key; the control circuit is configured to receive a first key signal generated by the first key, generate a first driving signal to the first valve element to drive the first valve element to act so as to conduct the first gas passage, and generate a second driving signal to the negative pressure vacuum pump to drive the negative pressure vacuum pump to operate.
7. The security monitoring equipment airtightness detection device according to claim 6, characterized in that:
security protection supervisory equipment gas tightness detection device still includes:
one input end of the first comparison circuit is electrically connected with the pressure sensor to receive a real-time pressure signal, the other input end of the first comparison circuit inputs a reference pressure signal, and the output end of the first comparison circuit is electrically connected with one input end of the control circuit; the control circuit is configured to receive the first comparison signal generated by the first comparison circuit and generate a third driving signal to the negative pressure vacuum pump to drive the negative pressure vacuum pump to stop running.
8. The security monitoring equipment airtightness detection device according to claim 6 or 7, characterized in that:
the other input end of the control circuit is electrically connected with the second key; the control circuit is configured to receive a second key signal generated by the second key and generate a fourth driving signal to the second valve element to drive the second valve element to conduct the second gas channel.
9. The security monitoring equipment airtightness detection device according to claim 8, wherein:
security protection supervisory equipment gas tightness detection device still includes:
the buzzer is arranged above the main body; the buzzer is electrically connected with one output end of the control circuit.
10. The security monitoring equipment airtightness detection device according to claim 9, characterized in that:
security protection supervisory equipment gas tightness detection device still includes:
and the timing circuit is electrically connected with the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221968027.6U CN218271255U (en) | 2022-07-28 | 2022-07-28 | Security protection supervisory equipment gas tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221968027.6U CN218271255U (en) | 2022-07-28 | 2022-07-28 | Security protection supervisory equipment gas tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218271255U true CN218271255U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221968027.6U Active CN218271255U (en) | 2022-07-28 | 2022-07-28 | Security protection supervisory equipment gas tightness detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN218271255U (en) |
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2022
- 2022-07-28 CN CN202221968027.6U patent/CN218271255U/en active Active
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