CN218411542U - Air pressure calibration equipment - Google Patents
Air pressure calibration equipment Download PDFInfo
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- CN218411542U CN218411542U CN202222384624.0U CN202222384624U CN218411542U CN 218411542 U CN218411542 U CN 218411542U CN 202222384624 U CN202222384624 U CN 202222384624U CN 218411542 U CN218411542 U CN 218411542U
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Abstract
The utility model discloses an atmospheric pressure calibration equipment, include: a housing; the adjustable air supply mechanism of low pressure, the adjustable air supply mechanism of low pressure is installed in the casing, the adjustable air supply mechanism of low pressure includes: the control module is provided with a pressure sensor, and the pressure sensor is used for monitoring the air pressure in the air cavity in real time; the air valve is an air valve with adjustable opening degree; the air pump is electrically connected with the control module; the air cavity is communicated with an air outlet of the air pump, an air inlet of the air valve and the pressure sensor and is provided with an output port which is used for connecting a circuit board to be calibrated; and the connector is used for electrically connecting the circuit board to be calibrated with the control module. The utility model discloses technical scheme can improve atmospheric pressure and mark the precision and improve the speed of single or a plurality of stable atmospheric pressure of output.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to atmospheric pressure calibration equipment.
Background
The existing air pressure calibration equipment usually needs a high-pressure air source, and the high-pressure air source is usually obtained by filling high-pressure air into air storage equipment. Therefore, when the high-pressure air source is continuously deflated to provide high pressure, the pressure can be reduced along with the time, and the air pressure is unstable. For a circuit board to be calibrated, which needs to calibrate low pressure, a pressure regulating valve is needed to control and output low pressure, and the output low pressure is unstable due to unstable air pressure of an air source, so that the error of the calibrated pressure is large. The working air pressure of the existing bedsore-proof air cushion or thrombus-proof air pressure wave is lower than 27Kpa, so that the circuit board to be calibrated needs to be calibrated to have lower air pressure. Therefore, an air pressure calibration device capable of improving the calibration accuracy of the low-voltage circuit board to be calibrated is needed.
In addition, some products need to calibrate a plurality of air pressure values, so that calibration equipment needs to be provided with a plurality of pressure regulating valves and air valves, so that the production and use costs of the pressure regulating equipment are high; and because the output air pressure of the high-pressure air source is unstable, each pressure regulating valve needs to be finely adjusted to stabilize the output air pressure during calibration, so that the calibration time is long.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an atmospheric pressure calibration equipment aims at improving when atmospheric pressure marks the precision, improves the speed of single or a plurality of stable atmospheric pressure of output.
In order to achieve the above object, the utility model provides an atmospheric pressure calibration equipment includes:
a housing;
the adjustable air supply mechanism of low pressure, the adjustable air supply mechanism of low pressure is installed in the casing, the adjustable air supply mechanism of low pressure includes:
the control module is provided with a pressure sensor;
the air valve is a mechanical air valve with adjustable opening degree;
the air pump is electrically connected with the control module and is configured as an adjustable-flow air pump, and the output flow of the air pump is increased when the current input into the air pump is increased; and
the air cavity is communicated with an air outlet of the air pump, an air inlet of the air valve and the pressure sensor and is provided with an output port which is used for being connected with a circuit board to be calibrated, and the pressure sensor is used for monitoring the air pressure in the air cavity in real time; and
and the connector is used for electrically connecting the circuit board to be calibrated with the control module.
Optionally, a mounting groove is formed in the outer side of the housing, the connector is configured as a thimble, the mounting groove is used for placing the circuit board to be calibrated, and the thimble is mounted in the mounting groove.
Further, the air pressure calibration equipment further comprises a pressing plate, and the pressing plate is used for abutting against the circuit board to be calibrated placed in the mounting groove.
Optionally, an interaction component is disposed on the housing, and the interaction component is configured to input an instruction to the control module and obtain information from the control module.
Optionally, the interaction assembly comprises a pneumatic display, the pneumatic display being electrically connected to the control module; and/or
The interactive assembly comprises a plurality of indicator lamps, the indicator lamps are electrically connected with the control module and are used for indicating a calibration process; and/or
The interactive assembly includes an entity activation button electrically connected to the control module.
Optionally, the interaction assembly comprises a display screen, and the display screen is electrically connected with the control module.
Optionally, the display screen is configured as a touch screen.
Optionally, the gas valve is configured as an electrically controlled gas valve, which is electrically connected with the control module; and/or
The gas valve is configured as a mechanical gas valve.
Optionally, the housing includes an upper cover and a lower cover connected to each other, the low-pressure adjustable air source mechanism is installed on the lower cover, and the upper cover and the lower cover enclose the housing.
Optionally, the air pressure calibration apparatus may output a single or multiple stable air pressure values.
The utility model discloses technical scheme provides through adopting the adjustable air supply mechanism of low pressure to stabilize atmospheric pressure: the air cavity is communicated with the air outlet of the air pump, so that the air pump can charge air into the air cavity to ensure that the air cavity has certain air pressure; the air cavity is communicated with the air inlet of the air valve, so the air valve can discharge the air in the air cavity, and the air discharge speed of the air valve is determined by the air pressure and the opening degree of the air valve due to the adjustable opening degree of the air valve; the air cavity is communicated with the pressure sensor, so that the pressure sensor can measure the pressure value in the air outlet cavity; in conclusion, the pressure value in the air cavity is determined by the air flow output by the air pump and the opening of the air valve; the air pump is electrically connected with the control module, so that when the output port of the air cavity is required to provide a stable air flow, the control module detects that the pressure in the air cavity is too low through the pressure sensor, the air flow of the air pump is increased, and the pressure in the air cavity is increased; the control module detects that the pressure in the air cavity is too large through the pressure sensor, then reduces the air flow of the air pump, reduces the pressure in the air cavity so as to maintain the pressure in the air cavity stable, and further maintains the pressure of an output port of the air cavity. Because a high-pressure air source is not needed, the problem that the air pressure is reduced after the high-pressure air source is deflated does not exist, and the air pressure can be stabilized through the control module, so that the air pressure provided by the calibration equipment is more stable, and the air pressure calibration precision can be improved. The pressure in the air cavity can be changed only by adjusting the air flow of the air pump and the opening of the air valve, so that a plurality of pressure adjusting valves and air valves are not required to be arranged; because the control module can automatically maintain the pressure in the air cavity through the process, the output air pressure is stable without finely adjusting the pressure regulating valve, and the speed of outputting single or multiple stable air pressures can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions 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 diagram of an explosion structure of an embodiment of the air pressure calibration apparatus of the present invention;
fig. 2 is a schematic structural diagram of the lower cover and the low-pressure adjustable air source mechanism in the embodiment of fig. 1.
The reference numbers indicate:
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 embodiments 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.
Furthermore, the descriptions in the present application related to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are implicitly being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an atmospheric pressure calibration equipment.
In the embodiment of the present invention, referring to fig. 1 and 2, the air pressure calibration apparatus includes:
a housing;
the adjustable air supply mechanism of low pressure, the adjustable air supply mechanism of low pressure installs in the casing, and the adjustable air supply mechanism of low pressure includes:
the control module 20, the control module 20 is provided with a pressure sensor;
the air valve 22, the air valve 22 is a mechanical air valve 22 with adjustable opening;
the air pump 23 is electrically connected with the control module 20, the air pump 23 is configured as an adjustable-flow air pump, and the larger the current input to the air pump 23 is, the larger the output flow of the air pump 23 is; and
the air cavity is communicated with the air outlet of the air pump 23, the air inlet of the air valve 22 and the pressure sensor 21, and is provided with an output port 26, and the output port 26 is used for being connected with the circuit board 50 to be calibrated; the pressure sensor 20 is used for monitoring the air pressure in the air cavity in real time; and
and a connector for electrically connecting the circuit board 50 to be calibrated with the control module 20.
This use novel embodiment to be used for demarcating wait to demarcate circuit board 50 for using the main control circuit board in medical products such as bedsore-proof air cushion, this main control circuit board only need monitor and control product atmospheric pressure value at 60mmHg within range. The maximum output air pressure of the air pump 23 is 300mmHg. In practice, the following steps may be followed:
1. placing the circuit board 50 to be calibrated into the mounting groove 31, and simultaneously pressing the circuit board 50 to be calibrated by the pressing plate 33 to make the circuit board 50 to be calibrated fully contact with the thimble 32;
2. connecting the output port 26 to the circuit board 50 to be calibrated;
3. setting a standard calibration air pressure value required by the circuit board 50 to be calibrated to the control module 20;
4. pressing the start switch 43 starts calibration;
5. after the control module 20 obtains the start signal, the air pump 23 is started, the air flow of the air pump 23 is controlled to be gradually increased from small to large, meanwhile, the control module 20 acquires the air pressure value in the air cavity in real time through the pressure sensor 21 to judge whether the flow of the air pump 23 needs to be increased or decreased until the pressure value acquired by the pressure sensor 21 is within the range of the set standard calibration air pressure value;
6. the control module 20 sends a signal to the circuit board 50 to be calibrated through the thimble 32;
7. the circuit board 50 to be calibrated calibrates the air pressure value according to the obtained standard output by the signal acquisition output port 26, and converts the air pressure value into a digital signal for storage.
The air chamber can be a cavity formed by connecting an air pipe 24 and a three-way joint 25 as shown in fig. 2, or can be a box-shaped air chamber, and a plurality of air guide pipes are led out from the air chamber and are respectively communicated with an air pump 23, an air valve 22 and a pressure sensor 21. The control module 20 collects the pressure value in the air cavity through the pressure sensor 21 to control the output flow of the air pump in real time, and controls the pressure in the air cavity by increasing or decreasing the output flow of the air pump, so that the pressure in the air cavity is maintained in a set calibration pressure range.
Referring to fig. 1 and 2, optionally, a mounting groove 31 is provided on the outer side of the housing, the connector is configured as a thimble 32, the mounting groove 31 is used for placing a circuit board 50 to be calibrated, and the thimble 32 is mounted in the mounting groove 31. Since the circuit board 50 to be calibrated is usually integrated on the printed circuit board, the mounting slot 31 may be configured as a placing slot of the circuit board to be brushed, and the thimble 32 is a connector capable of being linked with the circuit board to be brushed, so that it is more convenient to link the circuit board 50 to be calibrated with the control module 20.
Referring to fig. 1 and 2, optionally, the air pressure calibration apparatus further includes a pressing plate 33, and the pressing plate 33 is used for abutting against the circuit board 50 to be calibrated, which is placed in the mounting groove 31. There is usually no fixing device on the printed circuit board, and the pressing plate 33 compresses the printed circuit board tightly and in the mounting groove 31, which is helpful for fixing the circuit board 50 to be calibrated, and meanwhile, the thimble 32 can be ensured to be in close contact with the printed circuit board, thereby preventing the thimble 32 from being in virtual connection with the circuit board 50 to be calibrated to cause calibration failure.
Referring to fig. 1 and 2, optionally, an interactive assembly is provided on the housing for inputting instructions to the control module 20 and for obtaining information from the control module 20. The mutual subassembly makes the utility model provides an in the embodiment of the utility model the atmospheric pressure calibration equipment is easier to operate. In some other embodiments of the present invention, the control module 20 may be linked to a host computer for operation.
Referring to fig. 1 and 2, optionally, the interaction assembly includes a pneumatic display 41, the pneumatic display 41 being electrically connected to the control module 20; and/or
The interactive assembly comprises a plurality of indicator lamps 42, the indicator lamps 42 are electrically connected with the control module 20, and the indicator lamps 42 are used for indicating the calibration process; and/or
The interactive assembly includes a physical actuation button 43, the physical actuation button 43 being electrically connected to the control module 20.
The air pressure display 41 is used for displaying an air pressure value displayed by the pressure sensor 21 on the low-pressure adjustable air supply mechanism, and the pressure sensor 21 in the low-pressure adjustable air supply mechanism is equivalent to the calibrated circuit board 50 to be calibrated. The air pressure display 41 is used to manually verify whether the pressure in the air chamber is at a set value. When the air pressure displayed on the air pressure display 41 deviates from the set standard air pressure, the air pressure acquisition precision of the control module 20 needs to be calibrated again or the opening of the air valve 22 needs to be manually adjusted.
The calibration process may include the above seven processes, since the control method of the control module 20 is different in different processes, for example, in step 3, the control module 20 needs to receive the standard air pressure input by human; in step 5, the control module 20 can stabilize the air pressure in the air cavity by controlling the air flow of the air pump 23, so that the air pressure in the air cavity is stabilized at the standard air pressure input in step 3. It is necessary to prompt the user for the step to which the calibration process proceeds. The indicator lights 42 may include seven indicator lights 42 that each indicate that the calibration process is proceeding to one of the seven steps described above. The indication mode may be that seven indicator lamps 42 are in an on-off state, and when the calibration process goes to a certain step, the indicator lamp 42 representing the step is turned on; or seven indicator lights 42 are in a normally on state, and when the calibration process proceeds to a certain step, the indicator light 42 representing the step is turned off.
Referring to fig. 1 and 2, optionally, the interactive assembly includes a display screen electrically connected to the control module 20. The display screen can be used for displaying the air pressure value measured by the pressure sensor 21 in the low-pressure adjustable air source mechanism and can also be used for indicating the step of the calibration process. The display screen improves the integration of the parts of the interactive component used for information display.
Referring to fig. 1 and 2, optionally, the display screen is configured as a touch screen. The touch screen can be used for inputting operation information, such as an air pressure value to be calibrated. Can also be used for displaying the air pressure in the air cavity and the steps of calibration. The touch screen enables the user to operate more conveniently.
Referring to fig. 1 and 2, optionally, the gas valve 22 is configured as an electrically controlled gas valve 22, the electrically controlled gas valve 22 being electrically connected to the control module 20; and/or
The gas valve 22 is configured as a mechanical gas valve 22.
The electrically controlled air valve 22 is electrically connected with the control module 20, so that the control module 20 can control the air pressure in the air cavity by adjusting the opening degree of the air valve 22, and the air pressure adjusting mode is increased. The mechanical air valve 22 has simple structure and high reliability, and can also reduce the production cost.
Referring to fig. 1 and 2, the housing optionally includes an upper cover 11 and a lower cover 12 connected to each other, the low-pressure adjustable air supply mechanism is mounted on the lower cover 12, and the upper cover 11 and the lower cover 12 enclose the housing. The lower cover 12 is integrated with a low-pressure adjustable air source mechanism, so that the low-pressure adjustable air source mechanism can be distinguished more easily during disassembly and maintenance, and the maintenance is facilitated.
Referring to fig. 1 and 2, the air pressure calibration apparatus may optionally output a single or multiple stable air pressure values. Only different air pressure values are input into the control module, and the control module can control the air flow of the air pump to stabilize the pressure in the air cavity on the input pressure value. Therefore, the embodiment of the present invention provides an air pressure calibration device capable of outputting single or multiple stable air pressure values.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. An air pressure calibration device, comprising:
a housing;
the adjustable air supply mechanism of low pressure, the adjustable air supply mechanism of low pressure is installed in the casing, the adjustable air supply mechanism of low pressure includes:
the control module is provided with a pressure sensor;
the air valve is a mechanical air valve with adjustable opening;
the air pump is electrically connected with the control module and is configured as an adjustable-flow air pump, and the output flow of the air pump is increased when the current input into the air pump is increased; and
the air cavity is communicated with an air outlet of the air pump, an air inlet of the air valve and the pressure sensor and is provided with an output port, the output port is used for being connected with a circuit board to be calibrated, and the pressure sensor is used for monitoring the air pressure in the air cavity in real time; and
and the connector is used for electrically connecting the circuit board to be calibrated with the control module.
2. The air pressure calibration device according to claim 1, wherein a mounting groove is formed on an outer side of the housing, the connector is configured as a thimble, the mounting groove is used for placing the circuit board to be calibrated, and the thimble is mounted in the mounting groove.
3. The air pressure calibration device according to claim 2, further comprising a pressing plate for abutting against the circuit board to be calibrated placed in the mounting groove.
4. The air pressure calibration device of claim 1, wherein the housing is provided with an interactive component, and the interactive component is used for inputting instructions to the control module and obtaining information from the control module.
5. The air pressure calibration device of claim 4, wherein the interaction component comprises an air pressure display, the air pressure display being electrically connected to the control module; and/or
The interactive assembly comprises a plurality of indicator lamps, the indicator lamps are electrically connected with the control module and are used for indicating a calibration process; and/or
The interactive assembly includes an entity activation button electrically connected to the control module.
6. The air pressure calibration device of claim 4, wherein the interactive component comprises a display screen, and the display screen is electrically connected with the control module.
7. The air pressure calibration device of claim 6, wherein the display screen is configured as a touch screen.
8. The air pressure calibration device of claim 1, wherein the air valve is configured as an electrically controlled air valve, the electrically controlled air valve being electrically connected to the control module; and/or
The gas valve is configured as a mechanical gas valve.
9. The air pressure calibration device according to claim 1, wherein the housing comprises an upper cover and a lower cover connected with each other, the low pressure adjustable air supply mechanism is mounted on the lower cover, and the upper cover and the lower cover enclose the housing.
10. The air pressure calibration apparatus according to claim 1, wherein the air pressure calibration apparatus can output a single or multiple stable air pressure values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384624.0U CN218411542U (en) | 2022-09-07 | 2022-09-07 | Air pressure calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384624.0U CN218411542U (en) | 2022-09-07 | 2022-09-07 | Air pressure calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218411542U true CN218411542U (en) | 2023-01-31 |
Family
ID=85030535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222384624.0U Active CN218411542U (en) | 2022-09-07 | 2022-09-07 | Air pressure calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218411542U (en) |
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2022
- 2022-09-07 CN CN202222384624.0U patent/CN218411542U/en active Active
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