CN103735333A - Biological impact system - Google Patents
Biological impact system Download PDFInfo
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- CN103735333A CN103735333A CN201410032383.0A CN201410032383A CN103735333A CN 103735333 A CN103735333 A CN 103735333A CN 201410032383 A CN201410032383 A CN 201410032383A CN 103735333 A CN103735333 A CN 103735333A
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Abstract
The invention discloses a biological impact system comprising an impaction device and a control panel. The impaction end of the impaction device is provided with a pressure sensor which is connected with the control panel. The biological impact system can accurately describe mechanical characteristics of the biological impaction process, a precision force sensor and a single-chip microcomputer are used to acquire and record force signals during impaction of an impaction head in real time, and accurate data is provided for analyzing impact force characteristics of the impaction process. The biological impact system is simple to operate, compact in structure and low in cost, has high stability and reliability and is suitable for verification of various biological impact tests.
Description
Technical field
The present invention relates to a kind of biological impact system.
Background technology
Biological percussion device is for simulating the injury device of the wound that external impact causes, being mainly used in clinical and experimental study.At present, there is on the market multiple ram product, comprise PinPoint produced in USA
tMbIM-1 type (free fall type) biological impact machine, BIM-II type (pneumatic type) biological impact machine and the small-sized biological impact machine of Third Military Medical University's development, multifunctional bio impact machine and the small-sized ram based on ail gun of The Fourth Military Medical University's research.The BIM-1 type that these devices are studied except Third Military Medical University is the traditional structure of free fall type, and all the other are all to adopt high-pressure pneumatic pattern, order about impact head striking experiment object.
Because impact head is to clash into tested biological object under the effect of air pressure or gravity.Air pressure height larger or impact head is higher, and the speed that impact head is clashed into is larger, and the strength of shock is also larger.Therefore, these experimental provisions are all that the size (or impact head height) that adopts air pressure is tested the parameter of clashing into result as describing.But the height of air pressure or impact head all cannot accurately be described process and strength feature that impact head is clashed into tested biological object.
According to collision theory, knockout process need to meet principle of conservation of momentum:
F×Δt=Σm×Δv
F: representing the power of external action on object, is a space vector;
Δ t: represent that applied external force acts on the time on object;
M: the quality that represents object;
Δ v: representing the variable quantity of object speed, is a space vector.
When measurand position is fixedly time, this conservation of momentum formula just becomes:
F×Δt=m×Δv
M is in knockout process, clashes into by the quality summation of all objects of experimental subject, and Δ v is the velocity variable of quality m.Due to after striking experiment completes, clashing into by the speed of the object of experimental subject is zero, and therefore, the size of Δ v equals emission rate.
F: be the impact force in knockout process.According to above-mentioned formula, the size of this power equals the business of the product of rammer weight m and its speed divided by action time.
Because effect of impact time of each experiment is affected by the many factors such as state of experimental subject soft tissue, therefore, existing experimental provision adopts the size (or impact head height) of air pressure to test the parameter of clashing into result as describing, its method of describing impact effects is accurate not, cannot accurately describe impact head and clash into process and the strength feature of tested biological object, the mechanism research forming for wound also lacks more convictive data.
Summary of the invention
The object of this invention is to provide a kind of biological impact system that can accurate recording knockout process mechanical characteristics.
For achieving the above object, the present invention adopts following technical scheme:
A biological impact system, comprises percussion device and panel, and the shock end of described percussion device is provided with pressure transducer, and described pressure transducer is connected with panel.
Further, also comprise the display device being connected with panel.
Further, described panel adopts single-chip microcomputer or arm processor.
Further, described arm processor adopts ARM9 processor.
Further, described percussion device comprises source of the gas, clashes into cylinder and support, and source of the gas is connected with the input that clashes into cylinder, clashes into cylinder and is fixed on support, and described pressure transducer is arranged on the push rod end that clashes into cylinder.
Further, described source of the gas is by trachea and be arranged on valve on trachea and be connected with the input that clashes into cylinder, and described panel is connected with valve.
Further, also comprise control box body, described panel is arranged on to be controlled in box body, on described control box body, instruction control is installed, and described instruction control is connected with panel.
Further, described valve is arranged on and controls in box body.
Further, described source of the gas adopts small portable air compressor machine GA81/4X.
Further, described support comprises the beam that can place the horizonal base plate of impact object and be fixed on the inverted L shape on horizonal base plate, and described shock cylinder is vertically fixed on beam.
Owing to adopting technique scheme, the present invention at least has the following advantages:
(1) the present invention utilizes precision force transducer and single-chip microcomputer Real-time Collection and records the force signal of impact head in knockout process, the mechanical characteristics of biological knockout process can accurately be described, for analyzing the impact force feature of knockout process, provide accurate data, made up the blank that traditional striking experiment device cannot be monitored knockout process.
(2) easy and simple to handle, the compact conformation, with low cost of the present invention, and there is higher stability and reliability, be suitable for the checking of various biological striking experiments.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail.
Fig. 1 is biological impact system schematic diagram of the present invention.
Fig. 2 is biological impact system structural representation of the present invention.
Fig. 3 is control box structural representation.
Fig. 4 is the inner connection diagram of control box.
Fig. 5 is support and clashes into cylinder connection diagram.
The specific embodiment
As shown in Figure 1, a kind of biological impact system of the present invention, comprises percussion device and panel, and the shock end of described percussion device is provided with pressure transducer, and described pressure transducer is connected with panel.Further, also comprise the display device being connected with panel.Wherein, panel adopts the embedded system consisting of single-chip microcomputer or arm processor, preferably ARM9 processor.
The preferred high-pressure pneumatic pattern of percussion device of the present invention, " small portable air compressor machine GA81/4X " that Shanghai Gui Lai Industrial Co., Ltd. produces belongs to this type of.Particularly, percussion device comprises source of the gas, clashes into cylinder and support; Source of the gas is connected with the input that clashes into cylinder by trachea, valve is installed on trachea, is connected with described panel, clash into cylinder and be fixed on support, the push rod that clashes into cylinder end portion is the impact head of implementing shock behavior, and described pressure transducer is arranged on the push rod end that clashes into cylinder.
Further, panel is arranged on to be controlled in box body, on described control box body, instruction control is installed, and described instruction control is connected with panel.Described valve also can be arranged on to be controlled in box body.
Shown in Fig. 2, biological impact system of the present invention, comprises source of the gas 1, control box 4, support 9, clashes into cylinder 7, pressure transducer 8, gas outlet tube 5, gas inlet tube 3, holding wire 6 and attaching plug 2.Clashing into cylinder 7 is fixed on support 9, pressure transducer 8 is arranged on the push rod end that clashes into cylinder 7, gas inlet tube 3 connects the output port of source of the gas 1 and the input port of control box 4, gas outlet tube 5 connects the output port of control box 4 and clashes into the input port of cylinder 7, attaching plug 2 connects 220 power supplys and control box 4, holding wire 6 Bonding pressure sensors 8 and control box 4.
As shown in Figure 3,4, control box comprises display device 46, control 47, panel 48, valve 411, controls box body 412 and control box base 410.Wherein, control 47 is directly installed on to be controlled on box body 412, display device 46 is arranged on and is controlled on box body 412 by screw, valve 411 and panel 48 are arranged on control box base 410 by screw, utilize control line 44 respectively display device 46, control 47, valve 411 to be coupled together with panel 48, attaching plug 43 connects panels 48 to outside power supply, and panel 48 changes the 220V alternating current of attaching plug 43 inputs into 5V unidirectional current, for the work of panel provides the energy.
As shown in Figure 5, clashing into cylinder 7 is vertically fixed on support 9, described support 9 has the horizonal base plate 90 that can place impact object, on horizonal base plate 90, be fixed with the beam of inverted L shape, screw 92,93 is through the installing hole 94,95 of mounting blocks 91, be tightened on the screw 96,97 on L-type beam, shock cylinder 7 is fixed on support 9.The fixed position of clashing into cylinder 7 can need to regulate according to experiment, to keep clashing into the relative position of cylinder 7 and experimental subject, controls the position of clashing into cylinder 7 striking experiment objects.In experimentation, experimental subject is placed on the horizonal base plate 90 of support 9.The pressure-air that source of the gas provides experiment to need, drives the push rod 71 that clashes into cylinder 7 to stretch out with certain speed, drives pressure transducer 8 striking experiment objects.
The present invention is in experimentation, and gas inlet tube connects the input of source of the gas and valve, and gas outlet tube connects the outfan of valve and clashes into the input of cylinder, has formed a high-pressure gas circuit.Valve plays a part switch.Panel is opened (or closing) gas circuit according to the control signal by-pass valve control of control, or by parameter displays such as the pressure signal gathering, times in display device.
Operator can pass to panel by instructions such as initialization, experiment beginning, experimental data demonstrations by data wire by control.Panel is according to instruction, and initialization system, opens valve, and the pressure-air that controlling source of the gas provides flows to and clashes into cylinder, drives and clashes into the push rod of cylinder and the pressure transducer of end thereof, stretches out striking experiment object with certain speed.Pressure transducer Real-time Collection pressure signal, and signal is passed to panel through holding wire, panel is accepted the pressure signal that control signal that control transmits and pressure transducer transmit, and with the frequency Real-time Collection of 100kHz, record the pressure signal of pressure transducer, and according to instruction by data show on the screen of display device.
The present invention can be used as computer aided orthopedics traction and reposition system and is applied on clinical medicine, and advantage is: (1) regulates the pressure of source of the gas pressure-air, can control speed and the impact force size of striking experiment.(2) utilize pressure transducer as impact head, in can real time record striking experiment process, impact force size and the variation characteristic thereof of impact head striking experiment object, for biological striking experiment analysis, the wound that real simulation external impact causes, accurate, comprehensive experimental data is provided, makes experimental result have more standby science, accuracy and repeatability.
For further illustrating technical scheme of the present invention, the existing process of utilizing the present invention to carry out reduction by traction operation technique is briefly described as follows:
1) according to shown in Fig. 1, connect various piece of the present invention, attaching plug is connected on 220V power supply, experimental subject is placed on the base of support, guarantees that the impact head of experiment shock cylinder is aimed at the position that will test;
2) open source of the gas, and regulate the output pressure of source of the gas to testing the pressure needing;
3), by the control of control box, the parameters of system is initialized;
4), by the control of control box, by-pass valve control is opened source of the gas and is clashed into the gas circuit between cylinder, drives the push rod that clashes into cylinder to stretch out, and drives pressure transducer striking experiment object, records the pressure signal of pressure transducer in experimentation simultaneously.
5), by the control of control box, the pressure signal that experimentation is recorded, the parameter displays such as time of knockout process are in display device.
Owing to having adopted above technical scheme, biological Impact Experimental System computer technology of the present invention, Electromechanical Control technology, sensor technology, assistant experiment personnel, realize Measurement accuracy, control size and the variation characteristic of impact force in biological striking experiment process.The present invention relates to the multi-door subjects such as mechanics, single-chip microcomputer, pneumatic control, on traditional biological striking experiment device basic, introduce pressure transducer and singlechip technology, accurately record in real time the information of pressure in knockout process and variation characteristic thereof, assistant experiment personnel Real-time Collection, accurately control biological striking experiment process, reason and the condition that result forms clashed in scientific analysis, improve accuracy and the repeatability of biological striking experiment, made up the blank that traditional striking experiment device cannot be monitored knockout process.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (10)
1. a biological impact system, is characterized in that, comprises percussion device and panel, and the shock end of described percussion device is provided with pressure transducer, and described pressure transducer is connected with panel.
2. biological impact system according to claim 1, is characterized in that, also comprises the display device being connected with panel.
3. biological impact system according to claim 1 and 2, is characterized in that, described panel adopts single-chip microcomputer or arm processor.
4. biological impact system according to claim 3, is characterized in that, described arm processor adopts ARM9 processor.
5. biological impact system according to claim 1 and 2, it is characterized in that, described percussion device comprises source of the gas, clashes into cylinder and support, and source of the gas is connected with the input that clashes into cylinder, clash into cylinder and be fixed on support, described pressure transducer is arranged on the push rod end that clashes into cylinder.
6. biological impact system according to claim 5, is characterized in that, described source of the gas is by trachea and be arranged on valve on trachea and be connected with the input that clashes into cylinder, and described panel is connected with valve.
7. biological impact system according to claim 6, is characterized in that, also comprises control box body, and described panel is arranged on to be controlled in box body, on described control box body, instruction control is installed, and described instruction control is connected with panel.
8. biological impact system according to claim 7, is characterized in that, described valve is arranged on to be controlled in box body.
9. biological impact system according to claim 5, is characterized in that, described source of the gas adopts small portable air compressor machine GA81/4X.
10. biological impact system according to claim 5, is characterized in that, described support comprises the beam that can place the horizonal base plate of impact object and be fixed on the inverted L shape on horizonal base plate, and described shock cylinder is vertically fixed on beam.
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Cited By (6)
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---|---|---|---|---|
CN105708579A (en) * | 2016-01-21 | 2016-06-29 | 中南大学湘雅三医院 | Domestic rabbit traumatic osteoarthritis model making device |
CN105796204A (en) * | 2016-05-23 | 2016-07-27 | 戴睿武 | Multifunctional experimental animal impacting machine |
CN106073930A (en) * | 2016-06-15 | 2016-11-09 | 中国人民解放军第三军医大学第三附属医院 | Pneumatic type biological impact machine |
CN110141391A (en) * | 2019-05-21 | 2019-08-20 | 海口市人民医院 | A kind of device making cerebral trauma animal model |
CN113116586A (en) * | 2019-12-30 | 2021-07-16 | 温州医科大学 | Quantitative damage device for optic nerve tube |
CN113662700A (en) * | 2021-08-12 | 2021-11-19 | 赵玉军 | Animal brain injury's percussion device |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105708579A (en) * | 2016-01-21 | 2016-06-29 | 中南大学湘雅三医院 | Domestic rabbit traumatic osteoarthritis model making device |
CN105708579B (en) * | 2016-01-21 | 2017-07-25 | 中南大学湘雅三医院 | Rabbit osteoarthritis after traumatic modelling device |
CN105796204A (en) * | 2016-05-23 | 2016-07-27 | 戴睿武 | Multifunctional experimental animal impacting machine |
CN106073930A (en) * | 2016-06-15 | 2016-11-09 | 中国人民解放军第三军医大学第三附属医院 | Pneumatic type biological impact machine |
CN106073930B (en) * | 2016-06-15 | 2017-11-17 | 中国人民解放军第三军医大学第三附属医院 | Pneumatic type biological impact machine |
CN110141391A (en) * | 2019-05-21 | 2019-08-20 | 海口市人民医院 | A kind of device making cerebral trauma animal model |
CN113116586A (en) * | 2019-12-30 | 2021-07-16 | 温州医科大学 | Quantitative damage device for optic nerve tube |
CN113662700A (en) * | 2021-08-12 | 2021-11-19 | 赵玉军 | Animal brain injury's percussion device |
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Application publication date: 20140423 |