CN115031915A - Instantaneous strong impact vibration type operation platform personnel security evaluation system - Google Patents
Instantaneous strong impact vibration type operation platform personnel security evaluation system Download PDFInfo
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- CN115031915A CN115031915A CN202210632622.0A CN202210632622A CN115031915A CN 115031915 A CN115031915 A CN 115031915A CN 202210632622 A CN202210632622 A CN 202210632622A CN 115031915 A CN115031915 A CN 115031915A
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- vibration
- waveform
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- strong impact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/346—Analysis of electrocardiograms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
Abstract
The invention provides a system for evaluating the personnel safety of an instantaneous strong impact vibration type operation platform, which comprises: a vibration waveform detection device, an electrocardiograph, and a waveform analysis device; the vibration waveform detection device comprises a vibration acceleration sensor and a vibration signal analyzer, the vibration acceleration sensor is arranged on a vibration source, and the vibration signal analyzer is electrically connected with the vibration acceleration sensor and transmits a vibration waveform diagram of the vibration source to the waveform analysis device; the electrocardiograph collects the electrocardiogram of the operator and transmits the electrocardiogram to the waveform analysis device; the waveform analysis device compares the received vibration waveform chart with an electrocardiogram, and evaluates the safety of the instantaneous strong impact on operators according to whether the ratio of the rise time length to the fall time length of the two waveforms is consistent. The method can solve the technical problem that whether damage can be caused to platform operators or not in the test process can not be correctly evaluated when the instantaneous impact vibration test is carried out within the specified acceleration safety threshold.
Description
Technical Field
The invention relates to the technical field of mechanical test safety assessment, in particular to a personnel safety assessment system for an instantaneous strong impact vibration type operation platform.
Background
At present, when an instantaneous strong impact vibration test is carried out, in part of test items, a metal integrated operation room platform can vibrate together under the action of a vibration source according to test requirements. In the test process, operators sometimes need to enter an operation room to operate the test objects (such as animals) and the test equipment; in this case, the instantaneous strong impact generated by the vibration source is directly transmitted to the human body through the ground of the operating room, and damages the tissues of the human body, such as internal organs.
In order to avoid damage to a human body caused by the instant strong impact, a corresponding safety evaluation method is established by the existing vibration acceleration type platform, and safety is evaluated according to an acceleration safety threshold value by the evaluation method, namely the safety exceeds a specific acceleration value, or the time for maintaining the acceleration exceeds the duration time, namely the safety is considered to have problems, so that the damage to the human body is caused.
However, even when this evaluation method is adopted, damage to the platform operator or the test animal, such as endocardial hemorrhage, craniocerebral pia-meningeal hemorrhage, and the like, with irreversible organic damage, often occurs during some transient shock vibration test within a specified acceleration safety threshold.
Therefore, there is a need for a safety evaluation system that can correctly evaluate whether a platform operator will be damaged when performing an instantaneous impact vibration test within a specified acceleration safety threshold.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a personnel safety evaluation system for an instantaneous strong impact vibration type operating platform, which aims to solve the technical problem that whether damage can be caused to platform operators or not in the test process can not be correctly evaluated when an instantaneous impact vibration test is carried out within a specified acceleration safety threshold value in the prior art.
The invention adopts the technical scheme that the personnel safety evaluation system of the instantaneous strong impact vibration type operation platform comprises: a vibration waveform detection device, an electrocardiograph, and a waveform analysis device;
the vibration waveform detection device comprises a vibration acceleration sensor and a vibration signal analyzer, wherein the vibration acceleration sensor is arranged on a vibration source and is electrically connected with the vibration signal analyzer; the vibration signal analyzer is electrically connected with the waveform analysis device and transmits a vibration waveform diagram of the vibration source to the waveform analysis device;
the electrocardiograph is electrically connected with the waveform analysis device, acquires the electrocardiogram of an operator and transmits the electrocardiogram to the waveform analysis device;
the waveform analysis device compares the received vibration waveform chart with an electrocardiogram, and evaluates the safety of the instantaneous strong impact on operators according to whether the ratio of the rise time length to the fall time length of the two waveforms is consistent.
According to the technical scheme, the beneficial technical effects of the invention are as follows:
the method can be used for correctly evaluating whether damage to platform operators is caused or not when instantaneous impact vibration tests are carried out within a specified acceleration safety threshold value.
Further, the vibration acceleration sensor is provided on the vibration source in an adhesive manner.
Furthermore, the electrocardiograph uses the electrocardio electrode slice to collect electrocardiosignals of an operator.
Further, the waveform analysis device is an industrial personal computer.
Further, the ratio of the rise time period and the fall time period of the vibration waveform is r1, the ratio of the rise time period and the fall time period of the electrocardiographic waveform is r2, and when r2 and r1 coincide, the safety evaluation is not qualified.
Furthermore, the platform operation seat further comprises a shock absorption device, and the shock absorption device is arranged on the platform operation seat.
Further, the cushioning device includes bottom plate and cushion, is equipped with a plurality of damping spring between bottom plate and the cushion, and each damping spring's both ends are connected with bottom plate, cushion respectively, have different inclinations between each damping spring and bottom plate, the cushion.
According to the technical scheme, the beneficial technical effects of the invention are as follows: can adjust the vibration that acts on operating personnel, avoid operating personnel's heartbeat and vibration source's vibration to produce periodic coupling resonance, cause the damage to operating personnel's cardiovascular system.
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 description of the embodiments or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a block diagram of a system according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a vibration waveform of embodiment 1 of the present invention;
FIG. 3 is a schematic electrocardiogram of embodiment 1 of the present invention;
FIG. 4 is a schematic diagram showing a vibration waveform and an electrocardiographic contrast in example 1 of the present invention;
fig. 5 is a schematic view of a cushioning device according to embodiment 2 of the present invention.
Reference numerals:
1-cushion, 2-bottom plate, 3-damping spring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1
The embodiment provides an instantaneous strong impact vibration type operation platform personnel safety evaluation system, as shown in fig. 1, including vibration waveform detection device, electrocardiograph and waveform analysis device, specifically as follows:
and the vibration waveform detection device is electrically connected with the waveform analysis device and is used for detecting vibration data of the vibration source, converting the vibration data into a vibration waveform diagram and transmitting the vibration waveform diagram to the waveform analysis device. In a specific embodiment, the vibration waveform detection device includes a vibration acceleration sensor and a vibration signal analyzer.
The vibration acceleration sensor is arranged on the vibration source and used for detecting the vibration data of the vibration source, and the selection of the vibration acceleration sensor is not limited and is implemented in a manner that can be realized by any one of the prior art, such as the optional YMC 2106C. Optionally, the vibration acceleration sensor is arranged on the vibration source in an adhesive manner.
The vibration signal analyzer is electrically connected with the vibration acceleration sensor, the electric connection mode is not limited, the vibration signal analyzer is implemented in any mode in the prior art, preferably wired cable connection is adopted, the vibration signal analyzer receives vibration data transmitted by the vibration acceleration sensor, converts the vibration data into a vibration waveform diagram, and converts the vibration data into the vibration waveform diagram, the vibration signal analyzer is the prior art, a portable vibration signal analyzer can be selected as the vibration signal analyzer, and the model can be selected from YMC92 9216S; the graph of the vibration waveform obtained by the conversion is shown in fig. 2.
The vibration waveform detection device and the waveform analysis device are electrically connected in any manner that can be realized by any of the prior art, and preferably, a wired cable connection is adopted.
And the electrocardiograph is electrically connected with the waveform analysis device and is used for detecting the electrocardiosignals of the operator, converting the electrocardiosignals into electrocardiograms and transmitting the electrocardiograms to the waveform analysis device. In a specific embodiment, the electrocardiograph may be a portable electrocardiograph, model number CM 1200B. The electrocardiograph uses the electrocardiograph electrode sheet to collect electrocardiographic signals of an operator, and the electrocardiogram obtained by conversion is shown in fig. 3.
The electrical connection between the electrocardiograph and the waveform analyzer is not limited, and may be implemented in any manner that is practicable in the prior art, and is preferably a wired cable connection.
And the waveform analysis device is used for comparing the received vibration waveform chart with the electrocardiogram and evaluating the safety of the instantaneous strong impact on operators according to whether the ratio of the rising time length to the falling time length of the two waveforms is consistent or not. In a specific implementation mode, the waveform analysis device is an industrial personal computer, and the model of the industrial personal computer is not limited. The industrial personal computer reads the rising time and the falling time of the vibration waveform in the vibration waveform diagram, namely the triangular area in FIG. 2, and calculates the ratio r1 of the rising time and the falling time of the vibration waveform; reading the rising time length and the falling time length of the electrocardiogram central electric waveform, namely triangular areas in fig. 3, calculating the ratio r2 of the rising time length and the falling time length of the electrocardiogram central electric waveform, when r2 is consistent with r1, namely r2 is r1, the heart of an operator generates periodic coupling resonance with the vibration of a vibration source, the principle is that the regular contraction and relaxation of the heart are periodic motion, the change of the acceleration of instantaneous impact vibration is periodic motion, and when the periodic change characteristic of the acceleration impact vibration is consistent with the periodic motion characteristic of the regular contraction and relaxation of the heart, the cardiovascular system of the operator can be damaged by the periodic coupling resonance.
The working principle of example 1 is explained in detail below:
after an operator enters an operation room and before a test is started, a vibration acceleration sensor of a vibration waveform detection device is pasted on a vibration source, an electrocardioelectrode plate of an electrocardiograph is pasted at the heart position of the operator, and a vibration signal analyzer and the electrocardiograph are started to work. Before the test, the vibration parameter of the vibration source is determined to be within the acceleration safety threshold.
After the start of the test, the test is suspended after the vibration source has been set to vibrate for a short time (in principle not more than 5 seconds) according to the defined vibration parameters. The industrial personal computer receives a vibration oscillogram and an electrocardiogram which are respectively transmitted by the vibration signal analyzer and the electrocardiogram machine, reads the rising time and the falling time of the vibration waveform in the vibration oscillogram and calculates the ratio r 1; the rising time and the falling time of the electrocardiogram center electrical waveform are read, and the ratio r2 is calculated. The operator can find out whether r2 is consistent with r1 according to the values of r1 and r2 and the waveform chart as shown in fig. 4. When r2 is consistent with r1, it indicates that the heartbeat of the operator at the moment and the vibration of the vibration source generate periodic coupling resonance, the safety evaluation is unqualified, and the test is continued to be carried out according to the original vibration parameters, which may damage the cardiovascular system of the operator.
By adopting the technical scheme of the embodiment, whether damage to platform operators can be correctly evaluated can be performed when the transient impact vibration test is performed within the specified acceleration safety threshold.
Example 2
In actual work, when the technical scheme of the embodiment 1 is used for judging that when a certain operator adopts a certain vibration parameter to carry out an instantaneous impact vibration test, the safety is unqualified, but the operator is not convenient to change people under ordinary conditions, and the operator still needs to want to continue the test by the vibration parameter.
In order to solve the above technical problem, on the basis of embodiment 1, the following technical solutions are adopted:
the safety evaluation system further comprises a cushioning device, and the cushioning device is arranged on the platform operation seat.
When an operator sits on the cushioning device on the seat to test, the vibration of the vibration source is transmitted to the cushioning device, the vibration waveform of the cushioning device can be changed, and the heartbeat of the operator and the vibration of the vibration source are prevented from generating periodic coupling resonance.
In a specific embodiment, as shown in fig. 5, the cushioning device includes a bottom plate 2 and a seat cushion 1, a plurality of damping springs 3 are disposed between the bottom plate and the seat cushion, and two ends of each damping spring are respectively connected to the bottom plate and the seat cushion, and have different tilt angles with the bottom plate and the seat cushion. The reason why the shock absorbing springs are connected to the base plate and the seat cushion in an inclined manner with different inclination angles is that when vibration is applied to a human body, the vibration has three influences on the human body, namely, the X-axis indicates the chest → the back, the Y-axis indicates the left → the right, and the Z-axis indicates the head → the foot. If the damping springs are vertically connected with the bottom plate and the cushion, the influence of the vibration on the human body in one direction can be changed. When the damping springs are connected with the bottom plate and the cushion in an inclined mode with different inclination angles, the influence of vibration on a human body in three directions can be changed.
In the embodiment, a plurality of cushioning devices are configured according to different vibration parameters, and the damping springs in each cushioning device are different, so that the vibration waveform of the vibration source under different vibration parameters can be changed; when in use, the cushioning device is placed on the platform operation seat.
Through adopting the technical scheme of this embodiment, can adjust the vibration that acts on operating personnel, avoid operating personnel's heartbeat and vibration source's vibration to produce periodic coupling resonance, cause the damage to operating personnel's cardiovascular system.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. An instantaneous strong impact vibration type operation platform personnel safety evaluation system is characterized by comprising: a vibration waveform detection device, an electrocardiograph, and a waveform analysis device;
the vibration waveform detection device comprises a vibration acceleration sensor and a vibration signal analyzer, wherein the vibration acceleration sensor is arranged on a vibration source and is electrically connected with the vibration signal analyzer; the vibration signal analyzer is electrically connected with the waveform analysis device and transmits a vibration waveform diagram of a vibration source to the waveform analysis device;
the electrocardiograph is electrically connected with the waveform analysis device, acquires the electrocardiogram of an operator and transmits the electrocardiogram to the waveform analysis device;
the waveform analysis device compares the received vibration waveform chart with an electrocardiogram, and evaluates the safety of the instantaneous strong impact on operators according to whether the ratio of the rise time length to the fall time length of the two waveforms is consistent.
2. The system for assessing personnel safety of an operation platform based on transient high impact vibration and the like according to claim 1, wherein the vibration acceleration sensor is arranged on the vibration source in an adhesion mode.
3. The personnel safety assessment system for the instantaneous strong impact vibration operation platform according to claim 1, wherein the electrocardiograph uses electrocardio electrode plates to collect electrocardio signals of an operator.
4. The personnel safety assessment system for the instantaneous strong impact vibration type operation platform according to claim 1, wherein said waveform analysis device is an industrial personal computer.
5. The personnel safety assessment system for operation platforms of the instantaneous strong impact vibration type according to claim 1, wherein the ratio of the rise time length and the fall time length of the vibration waveform is r1, the ratio of the rise time length and the fall time length of the electrocardiographic waveform is r2, and when r2 is consistent with r1, the safety assessment is not qualified.
6. The system for assessing the personnel safety of an instantaneous high impact vibration type operation platform according to claim 1, further comprising a vibration damper, wherein the vibration damper is arranged on the platform operation seat.
7. The system as claimed in claim 6, wherein the damping device comprises a bottom plate and a cushion, a plurality of damping springs are disposed between the bottom plate and the cushion, two ends of each damping spring are connected to the bottom plate and the cushion, and the damping springs have different inclination angles with the bottom plate and the cushion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632622.0A CN115031915A (en) | 2022-06-06 | 2022-06-06 | Instantaneous strong impact vibration type operation platform personnel security evaluation system |
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| CN202210632622.0A CN115031915A (en) | 2022-06-06 | 2022-06-06 | Instantaneous strong impact vibration type operation platform personnel security evaluation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330437A (en) * | 2023-12-01 | 2024-01-02 | 深圳三思纵横科技股份有限公司 | Impact testing machine personnel protection method, device and system based on Internet of Things |
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2022
- 2022-06-06 CN CN202210632622.0A patent/CN115031915A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330437A (en) * | 2023-12-01 | 2024-01-02 | 深圳三思纵横科技股份有限公司 | Impact testing machine personnel protection method, device and system based on Internet of Things |
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