CN202179540U - Calibration device for pulmonary function analyzer - Google Patents
Calibration device for pulmonary function analyzer Download PDFInfo
- Publication number
- CN202179540U CN202179540U CN 201120233448 CN201120233448U CN202179540U CN 202179540 U CN202179540 U CN 202179540U CN 201120233448 CN201120233448 CN 201120233448 CN 201120233448 U CN201120233448 U CN 201120233448U CN 202179540 U CN202179540 U CN 202179540U
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- servo motor
- lead screw
- piston
- pulmonary function
- support abutment
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Abstract
The utility model relates to a calibration device for a pulmonary function analyzer, which is composed of a computer, a control panel, an alternating current servo motor controller, an alternating current servo motor and a piston cylinder, wherein the computer is in two-way connection with the control panel; the control panel is in two-way connection with the alternating current servo motor controller; the alternating current servo motor controller is in two-way connection with the alternating current servo motor; a motor shaft of the alternating current servo motor is connected with a large-lead screw rod of the piston cylinder by a coupler; and the alternating current servo motor drives a piston to complete the motion control. The calibration device has a simple and reliable structure; the piston cylinder can simulate standard respiration realistically and visually; the problems in quantity value transfer and traceability of the pulmonary function analyzer are solved; and the simulated respiration is realized. As the large-lead screw rod of the piston cylinder is directly connected with the motor shaft of the alternating current servo motor, the locating precision is improved, and the cumulative error of the device is lowered.
Description
Technical field
This utility model relates to the calibration equipment of medical apparatus and instruments, and particularly employing standard is breathed simulator and come the pulmonary function appearance calibrating installation of verification.
Background technology
In developed country and area; Standardization for pulmonary function test (pft); Strengthen the quality control of pulmonary function test (pft), successively worked out the quality inspection standard of pulmonary function appearance, just worked out the lung function standard in succession like U.S. thoracic cavity association (ATS), European pneumatology meeting (ERS).The formulation of these standards has promoted the clinical practice of pulmonary function appearance, for the quality control of pulmonary function appearance has proposed more specific requirement.General micro-processor controlled piston cylinder or the air pump of adopting of external pulmonary function laboratory and producer done quality control and calibration, and medical institutions generally adopt the manual calibration tube of fixed volume (1-3L).At home; Pulmonary function test (pft) is carried out than later; 200720085143) and the pulmonary function calibrating installation (patent No.: 200820063768) of Ionization-Radiation Inst., Chinese Detection Technology Academy also have several families to carry out correlational study, main achievement has the breathing simulator (patent No.: of Wuhan Safety Environmental Protection Academy, Zhonggang Group.Different spirometers is tested same patient, and the result that possibly obtain differing greatly brings certain difficulty to clinical diagnosis.Addressing this problem to have pulmonary function calibrating installation standard, that be suitable for, so the producer of pulmonary function appearance research must carry out the research of pulmonary function calibrating installation, because the at present domestic matured product that does not also have to be correlated with produces.
Summary of the invention
The purpose of this utility model is in order to overcome the problem that above-mentioned prior art exists; And a kind of pulmonary function appearance calibrating installation is provided; Realize the integrated flow control of gas under unsteady flow amount situation, be used for quality control and measurement and calibration, solve the transmission of quantity value of pulmonary function appearance and a difficult problem of tracing to the source.
The purpose of this utility model reaches like this:
A kind of pulmonary function appearance calibrating installation; Constitute by computer, panel, AC Servo Motor Control device, AC servo motor and piston cylinder; It is characterized in that: computer is connected with panel is two-way; Panel and AC Servo Motor Control device be two-way to be connected, the AC Servo Motor Control device is connected with AC servo motor is two-way; The AC servo machinery driving piston is accomplished motor control, and the motor shaft of AC servo motor links to each other with the big lead screw of piston cylinder through shaft coupling, for the piston in the piston cylinder provides power.
Described piston cylinder is made up of slide cartridge, piston, piston rod, lead screw pair connector, lead screw pair, bearing, shaft coupling, right support abutment, bearing block, limited block, slide rail, base, left support abutment, big lead screw, right end cap, left end cap, airway; Slide cartridge is fixed between left end cap, the right end cap; Four pull bars, right support abutment, left support abutment, slide rails on the right end cap are separately fixed on the base; Piston is fixed on piston rod one end and is placed in the slide cartridge; Piston rod passes left support abutment and links to each other with lead screw pair through the lead screw pair connector, and big lead screw is connected with shaft coupling through behind the bearing, accomplishes the transmission of motion; Bearing is fixed on the right support abutment through bearing block, and AC servo motor is fixed on the base through right support abutment; Limited block is fixed on the lead screw pair and an end inserts slide rail, and the direction of motion of piston rod guarantees that by the direction of motion of slide rail control limited block airway is installed in the side of left end cap.
Described panel is made up of single-chip microcomputer and complex programmable logic device (CPLD), and the capacity that gas flow rate and capacity are measured an encoder in the AC servo motor through the every 10ms of high speed CPLD output result changes as every 10ms is as theoretical value.
Described piston rod is provided with the hole, the position empty avoiding when moving for big lead screw.
The computer of this utility model is connected with panel is two-way, and panel and AC Servo Motor Control device be two-way to be connected, the AC Servo Motor Control device is connected with AC servo motor is two-way, and the AC servo machinery driving piston is accomplished motor control.With data by computer one-time write panel; After the AC Servo Motor Control device receives the instruction that panel sends, send instruction, directly control the just commentaries on classics counter-rotating of motor to AC servo motor; Parameter such as rotating speed of motor and acceleration and deceleration; The rotation of motor just drives big lead screw and rotates, thus the motion of control piston, the simulated respiration state.
Panel is made up of single-chip microcomputer and CPLD, and computer is with the data one-time write or deposit single-chip microcomputer in, and single-chip microcomputer carries out the signal transmission with two-way connection of CPLD, sends instruction for the AC Servo Motor Control device by CPLD.
The utility model has the advantages that:
1, simple in structure, reliable, the piston cylinder mock standard is breathed true to nature, vivid, has solved the transmission of quantity value of pulmonary function appearance and a difficult problem of tracing to the source, and has realized simulated respiration.
2, big lead screw directly is connected with AC servo motor, has improved locating accuracy, has reduced the cumulative errors of device.
3, this utility model has realized down that in panel control the integrated flow of gas under unsteady flow amount situation control, and to the pulmonary function appearance ideal gas of standard is provided, and is used for the quality control and the measurement and calibration of pulmonary function appearance.
4, under the precision control of panel, reached the requirement of the standard value of reproduction gas.This utility model is provided with pulmonary function respiration parameter (like static vital capacity VC etc.) arbitrarily on the basic model basis that scm software set up to be breathed, realize the calibration of pulmonary function appearance main physical parameters, simulates the various breathing states that possibly exist.This utility model reaches the proposed standard of U.S. thoracic cavity association (ATS) and European pneumatology meeting (ERS), fills the domestic gaps, and technical specification is with quite external.Its index is:
Volume range: 0-10L
Range of flow: 0-16L/s
Repeatability: ± 10mL
Volumetric errors: ± 0.5% (>=4L); ± 20mL (＜4L)
Flow error: ± 0.5% (>=2L/s); ± 10mL/s (＜2L/s)
Description of drawings
Fig. 1 is the structural representation of this utility model.
Fig. 2 is the composition sketch map of the panel of this utility model.
Fig. 3 is the structural representation of this utility model.
Fig. 4 is the profile of the piston cylinder structure of this utility model.
Fig. 5 is that the big lead screw of the piston rod of this utility model connects profile.
Fig. 6 is that the big lead screw of the motor of this utility model connects profile.
The specific embodiment
In conjunction with accompanying drawing this utility model is done further to describe.
As shown in Figure 1; This utility model is made up of computer, panel, AC Servo Motor Control device, AC servo motor and piston cylinder; Computer is connected with panel is two-way; Panel and AC Servo Motor Control device be two-way to be connected, the AC Servo Motor Control device is connected with AC servo motor is two-way, and the AC servo machinery driving piston is accomplished motor control.The motor shaft of AC servo motor 8 links to each other with the big lead screw 15 of piston cylinder through shaft coupling 7, and for the piston in the piston cylinder 2 provides power, mock standard is breathed, more than just constituted standard breathing simulator.The signal that the panel receiving computer sends; Give the order that the AC Servo Motor Control device sends instruction, AC servo motor receives and execution AC Servo Motor Control device sends; AC servo motor is controlled, and then piston is controlled, accomplish simulation experiment.The composition of panel is as shown in Figure 2.
Described piston cylinder such as Fig. 3, Fig. 4, Fig. 5, shown in Figure 6; Form by slide cartridge 1, piston 2, piston rod 3, lead screw pair connector 4, lead screw pair 5, bearing 6, shaft coupling 7, right support abutment 9, bearing block 10, limited block 11, slide rail 12, base 13, left support abutment 14, big lead screw 15, right end cap 16, left end cap 17, airway 18; Slide cartridge 1 is fixed between left end cap 17, the right end cap 16; Four pull bars on the right end cap 16, right support abutment 9, left support abutment 14, slide rail 12 are separately fixed on the base 13; Piston 2 is fixed on piston rod 3 one ends and is placed in the slide cartridge 1; Piston rod 3 passes left support abutment 14 and links to each other with lead screw pair 5 through lead screw pair connector 4, and big lead screw 15 is connected with shaft coupling 7 through bearing 6 backs, accomplishes the transmission of motion; Bearing 6 is fixed on the right support abutment 9 through bearing block 10, and AC servo motor 8 is fixed on the base 13 through right support abutment 9; Limited block 11 is fixed on the lead screw pair 5 and an end inserts slide rail 12, and the direction of motion of piston rod 3 guarantees that by the direction of motion of slide rail 12 control limited blocks 11 airway 18 is installed in the side of left end cap 17; Piston 2 outsides of said piston cylinder are added with sealing ring, and piston rod 3 is provided with the hole, the position empty avoiding when moving for big lead screw.
Described panel is as shown in Figure 2, is made up of single-chip microcomputer and CPLD, and the capacity that gas flow rate and capacity are measured an encoder in the AC servo motor through the every 10ms of high speed CPLD output result changes as every 10ms is as theoretical value.
Panel has at first been set up breathing model and various calibration parameter standard, and the AC Servo Motor Control device is assigned control command, and the working condition to AC servo motor under the control of AC Servo Motor Control device is controlled.Further; AC servo motor 8 is connected with big lead screw 15 through shaft coupling 7; Big lead screw 15 is fixed on the right support abutment 9 through bearing 6 and bearing block 7, moving lead screw pair 5 motions of big lead screw 15 rotating bands, and piston rod 3 is connected with lead screw pair 5 through lead screw pair connector 4; The motion of lead screw pair 5 drives piston rod 3 motions, for the piston in the piston cylinder 2 provides power.Piston 2 in the piston cylinder moves around and can the gas in the piston cylinder be discharged through airway 18, perhaps with ambient atmosphere sucker tube, simulates human body respiration through this process.Piston is the key component of this utility model with big lead screw running part, the slide cartridge 1 of piston cylinder in, adopt horizontal positioned piston rod 3 control pistons 2 the direction of motion and at the outside of piston employing sealing ring, solved the air-tightness between the moving component.Directly drive big lead screw 15 with AC servo motor 8 simultaneously and rotate, drive the rectilinear motion of piston 2, reduced friction and transmission error between the parts, improved the reliability and the precision of device through the motion of lead screw pair 5.In the present embodiment, the internal diameter of the slide cartridge 1 of piston cylinder is D=160mm, effective length S=520mm, and the dischargeable capacity of piston is about V=0.25 π D
2S ≈ 10.4L.
Panel has played leading effect in this device, receive and assign driving order through panel, through the AC Servo Motor Control device AC servo motor is controlled.Restriction task in limit switch completing place is controlled limit accuracy.
The whole checking procedure of this device has reached extraordinary effect by the accurate control of panel, obtains good repeatability, has therefore reached calibration criterion.
Claims (4)
1. pulmonary function appearance calibrating installation; Constitute by computer, panel, AC Servo Motor Control device, AC servo motor and piston cylinder; It is characterized in that: computer is connected with panel is two-way; Panel is connected with the AC Servo Motor Control device is two-way, and the AC Servo Motor Control device is connected with AC servo motor is two-way, and the motor shaft of AC servo motor (8) links to each other with the big lead screw (15) of piston cylinder through shaft coupling (7).
2. pulmonary function appearance calibrating installation according to claim 1; It is characterized in that: described piston cylinder is made up of slide cartridge (1), piston (2), piston rod (3), lead screw pair connector (4), lead screw pair (5), bearing (6), shaft coupling (7), right support abutment (9), bearing block (10), limited block (11), slide rail (12), base (13), left support abutment (14), big lead screw (15), right end cap (16), left end cap (17), airway (18); Slide cartridge (1) is fixed between left end cap (17), the right end cap (16); Four pull bars on the right end cap (16), right support abutment (9), left support abutment (14), slide rail (12) are separately fixed on the base (13); Piston (2) is fixed on piston rod (3) one ends and is placed in the slide cartridge (1); Piston rod (3) passes left support abutment (14) and links to each other with lead screw pair (5) through lead screw pair connector (4); Big lead screw (15) is connected with shaft coupling (7) through bearing (6) back; Bearing (6) is fixed on the right support abutment (9) through bearing block (10), and AC servo motor (8) is fixed on the base (13) through right support abutment (9); The lead screw pair (5) that is fixed on limited block (11) goes up and an end inserts slide rail (12), and airway (18) is installed in the side of left end cap (17).
3. pulmonary function appearance calibrating installation according to claim 1; It is characterized in that: described panel is made up of single-chip microcomputer and complex programmable logic device (CPLD), and the capacity that gas flow rate and capacity are measured an encoder in the AC servo motor through the every 10ms of high speed CPLD output result changes as every 10ms is as theoretical value.
4. pulmonary function appearance calibrating installation according to claim 2 is characterized in that: described piston rod (3) is provided with the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120233448 CN202179540U (en) | 2011-07-05 | 2011-07-05 | Calibration device for pulmonary function analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120233448 CN202179540U (en) | 2011-07-05 | 2011-07-05 | Calibration device for pulmonary function analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202179540U true CN202179540U (en) | 2012-04-04 |
Family
ID=45887204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120233448 Expired - Lifetime CN202179540U (en) | 2011-07-05 | 2011-07-05 | Calibration device for pulmonary function analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202179540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106214152A (en) * | 2016-08-11 | 2016-12-14 | 赛客（厦门）医疗器械有限公司 | A kind of respiration simulator calibrating lung function instrument |
| CN109172970A (en) * | 2018-07-02 | 2019-01-11 | 广州医科大学附属第医院 | A kind of dynamic testing method and detection device of End--tidal PCO_2 instrument |
-
2011
- 2011-07-05 CN CN 201120233448 patent/CN202179540U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106214152A (en) * | 2016-08-11 | 2016-12-14 | 赛客（厦门）医疗器械有限公司 | A kind of respiration simulator calibrating lung function instrument |
| CN109172970A (en) * | 2018-07-02 | 2019-01-11 | 广州医科大学附属第医院 | A kind of dynamic testing method and detection device of End--tidal PCO_2 instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430205 No.3, Fenghuang Industrial Park, Donghu Development Zone, Wuhan City, Hubei Province Co-patentee after: Guangzhou Institute of Respiratory Disease Patentee after: Sifang Optoelectronic Co., Ltd. Address before: 430074, building 10, building 6, Optics Valley pioneering street, East Lake Development Zone, Hubei, Wuhan Co-patentee before: Guangzhou Institute of Respiratory Disease Patentee before: Wuhan Cubic Optoelectronics Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |