CN201182599Y - Multifocal visual electrophysiology equipment based on PC platform - Google Patents
Multifocal visual electrophysiology equipment based on PC platform Download PDFInfo
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- CN201182599Y CN201182599Y CNU2008201073029U CN200820107302U CN201182599Y CN 201182599 Y CN201182599 Y CN 201182599Y CN U2008201073029 U CNU2008201073029 U CN U2008201073029U CN 200820107302 U CN200820107302 U CN 200820107302U CN 201182599 Y CN201182599 Y CN 201182599Y
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Abstract
The utility model discloses a PC-platform-based multi-focal visual electrophysiology equipment, to solve the problems that the electrophysiology equipment in the prior art can only carry out conventional visual electrophysiological testing or multi-focal visual electrophysiological testing and can not meet the relevant inspection standards of the International Society for Clinical Electrophysiology of Vision (ISCEV) and is inconvenient to operate; the equipment provided by the utility model comprises a computer processing and management system, as well as a graphics stimulator, a full-vision stimulator and a bio-electricity amplifier which are connected with the computer processing and management system, and a data acquisition system; wherein, the computer processing and management system comprises a data receiving system, a data processing system and a marking system; the graphics stimulator comprises a graphics stimulator main control system, as well as a conventional graphics stimulation system and a multi-focal graphics stimulation system which are connected with the graphics stimulator main control system. The utility model is used for professional doctors to conduct clinical testing on the functions of the visual system and the nervous system of patients.
Description
Technical field
This utility model relates to a kind of visual electrophysiology equipment, particularly a kind of multifocal visual electrophysiology equipment based on the PC platform.
Background technology
Medically, often detect the disease of diagnosing some eye or optic nerve system by visual electrophysiology, for example: be attended by the cataract, retina local patholoic change of optic nerve disease or retinal diseases etc., so carry out examination of visual electro physiology for diagnosis and observe some eye or optic nerve disease has important role.
At present, the general clinically visual electrophysiology equipment that uses is divided into two kinds: conventional visual electrophysiology checkout equipment and multifocal visual electrophysiology checkout equipment.
Conventional visual electrophysiology detects and comprises electroretinogram, bright-flash electroretinogram, figure electroretinogram and visual evoked potential.Electroretinogram is that skin electrode is placed on eyeball nasal side and temporo side, the amplitude of record polarization eyeball resting potential and photoreaction, and electroretinogram can react the function of retinal pigment epithelium.Bright-flash electroretinogram is the reaction of record retina for photostimulation, five kinds of reactions of its record in the international standard at present: the maximum hybrid reaction (dark adaptation) of rod cell reaction (dark adaptation), dark adapted eye, oscillatory potential (dark adaptation), cone responses (light adaptation), to the reaction (passage of scintillation light fusion frequency) of quick repetitive stimulation, bright-flash electroretinogram can be estimated the function of the cone and retinal rod.The figure electroretinogram is the reaction of record retina to pictorial stimulus, and it can react the function of optic ganglion cell.Visual evoked potential is the electrical activity of record visual cortex to figure or flash stimulation, and it can react the function of pathways for vision.
It is by special pictorial stimulus that multifocal visual electrophysiology detects, and is recorded in the reaction that retina or visual cortex obtain, and corresponding with conventional visual electrophysiology, multifocal visual electrophysiology has how burnt electroretinogram and Duo Jiao visual evoked potential.Many burnt electroretinograms can react the partial function of retina.Many burnt visual evoked potentials can react the function of pathways for vision.
The inventor finds, visual electrophysiology equipment of the prior art has following shortcoming: can only carry out conventional visual electrophysiology detection or multifocal visual electrophysiology and detect, can not satisfy International Society for Clinical Electrophysiology of Vision (ISCEV) coherence check standard, and visual electrophysiology equipment inconvenient operation, stability and capacity of resisting disturbance are all relatively poor.
The utility model content
This utility model provides a kind of multifocal visual electrophysiology equipment based on the PC platform, this equipment can carry out conventional visual electrophysiology detection and multifocal visual electrophysiology detects two kinds of detections, satisfy International Society for Clinical Electrophysiology of Vision (ISCEV) coherence check standard, and equipment is easy to operate.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of multifocal visual electrophysiology equipment based on the PC platform, the pictorial stimulus device, full visual field stimulator, bioelectric amplifier and the data collecting system that comprise Computer Processing and management system, be connected with management system with described Computer Processing; Wherein,
Described Computer Processing and management system comprise data receiving system, data handling system, Mk system;
Described pictorial stimulus device comprises pictorial stimulus device master control system, the conventional pictorial stimulus system and the Duo Jiao pictorial stimulus system that are connected with described pictorial stimulus device master control system;
After pictorial stimulus device or full visual field stimulator carry out visual stimulus to organism, bioelectric amplifier record stimulus data, data collecting system is carried out analog digital conversion to data then, and is transferred to Computer Processing and management system; After the data receiving system of Computer Processing and management system receives data, handle respectively and labelling by data handling system and Mk system.
Multifocal visual electrophysiology equipment based on the PC platform of the present utility model adopts the integrated design of conventional visual electrophysiology equipment and multifocal visual electrophysiology equipment, not only can carry out conventional visual electrophysiology detection and multifocal visual electrophysiology and detect two kinds of detections, also satisfied International Society for Clinical Electrophysiology of Vision (ISCEV) coherence check standard better, and easy to use.
Description of drawings
Fig. 1 is the structural representation of this utility model based on the multifocal visual electrophysiology equipment of PC platform;
Fig. 2 is the structural representation of the pictorial stimulus device of equipment shown in Figure 1;
Fig. 3 is the structural representation of the full visual field stimulator of equipment shown in Figure 1;
Fig. 4 is the structural representation of the bioelectric amplifier of equipment shown in Figure 1;
Fig. 5 is the structural representation of the data collecting system of equipment shown in Figure 1;
Fig. 6 is the structural representation of the Computer Processing and the management system of equipment shown in Figure 1.
The specific embodiment
This utility model provides a kind of multifocal visual electrophysiology equipment based on the PC platform, be used for solving the electric physiological apparatus of prior art and can only carry out conventional visual electrophysiology detection or multifocal visual electrophysiology detection, can not satisfy International Society for Clinical Electrophysiology of Vision (ISCEV) coherence check standard, the problem of inconvenient operation.Below in conjunction with accompanying drawing this utility model is elaborated.
As shown in Figure 1, the multifocal visual electrophysiology equipment based on the PC platform of the present utility model pictorial stimulus device, full visual field stimulator, bioelectric amplifier and the data collecting system that comprise Computer Processing and management system, be connected by computer control interface with described Computer Processing and management system; Wherein, described Computer Processing and management system comprise data receiving system, data handling system and Mk system.
When carrying out conventional visual electrophysiology detection and multifocal visual electrophysiology detection, after pictorial stimulus device or full visual field stimulator carry out visual stimulus to organism, bioelectric amplifier record stimulus data, data collecting system is carried out analog digital conversion to data then, and is transferred to Computer Processing and management system; After the data receiving system of Computer Processing and management system receives data, handle respectively and labelling by data handling system and Mk system.
As shown in Figure 2, the pictorial stimulus device comprise pictorial stimulus device master control system, the conventional pictorial stimulus system that is connected with described pictorial stimulus device master control system, how burnt pictorial stimulus system and P300 stimulating system.After pictorial stimulus device master control system receives instruction from Computer Processing and management system by computer control interface,, produce the corresponding figure that stimulates by controlling conventional pictorial stimulus system, how burnt pictorial stimulus system and P300 pictorial stimulus system.
Routine pictorial stimulus system can produce stimulation figure multiple spatial frequency, multiple color, various modes.
Many burnt pictorial stimulus system adopts based on the many burnt how burnt figures that stimulate that stimulate figures of concentric ring-shaped, and compatible other stimulate graphic model, and can change size, color and the quantity of stimulation figure.
P300 pictorial stimulus system can export target stimulation figure and non-target stimulation figure, and color, the type of target stimulation figure and non-target stimulation figure are variable, and adopt time of occurrence at random, type two random stimulus at random appear, to improve the reliability that writes down.
For greatly reducing the tracer signal artefact that derives from the pictorial stimulus system, the pictorial stimulus device uses the display field frequency that is higher than 100 hertz as conventional and many burnt stimulus frequency.
As shown in Figure 3, visual field stimulator comprises full visual field stimulator master control system, the flash stimulation device, EOG stimulator and the sound prompting apparatus that are connected with described full visual field stimulator master control system entirely.Full visual field stimulator master control system by control flash stimulation device, EOG stimulator and sound prompting apparatus, produces corresponding photostimulation after receiving instruction from Computer Processing and management system by computer control interface.
The flash stimulation device can produce steady light, single flash operation, the output of high-frequency group flashing light, and the stimulation time of light, stimulus intervals, stimulus intensity etc. all can be regulated.
The EOG stimulator realizes writing down the stimulation of electro-oculogram by to the fixedly control of light emitting diode, and may command stimulus frequency, bias light intensity.
The auditory tone cues device produces voice output, can improve patient's cooperate degree in testing process.
The light source that full visual field stimulator adopts is a light emitting diode, is convenient to realize the stable control to light source.For the better illumination effect being arranged, the preferred white light emitting diode.In addition, visual field stimulator can also carry out the active calibration entirely.
As shown in Figure 4, bioelectric amplifier comprises bioelectric amplifier master control system, the pre-amplifying circuit, secondary amplification circuit, high-frequency filter circuit, low-frequency filter circuit and the third level amplifying circuit that are connected with described bioelectric amplifier master control system; Wherein, described pre-amplifying circuit, secondary amplification circuit, high-frequency filter circuit, low-frequency filter circuit and third level amplifying circuit adopt cascade system to be connected successively.The bioelectric amplifier master control system is controlled pre-amplifying circuit, secondary amplification circuit, high-frequency filter circuit, low-frequency filter circuit and third level amplifying circuit respectively after receiving instruction from Computer Processing and management system by computer control interface.
Pre-amplifying circuit is realized the elementary amplification to signal, and amplification is adjustable.
Secondary amplification circuit realizes the secondary amplification to signal, and amplification is adjustable.
High-frequency filter circuit is realized the filtering to high-frequency signal, and filtered band is adjustable.
Low-frequency filter circuit is realized the filtering to low frequency signal, and filtered band is adjustable.
Third level amplifying circuit is realized the secondary amplification to signal, and amplification is adjustable.
Bioelectric amplifier adopts above-mentioned multi-stage cascade design, is all controlled by program, and control is convenient.For improving capacity of resisting disturbance, bioelectric amplifier does not adopt wave trap.
Bioelectric amplifier by above-mentioned good technological design (promptly to signal amplify, filter, measure such as amplification again), guaranteed high anti-jamming capacity.
The all right external interference search gear of bioelectric amplifier, the differential mode interference source that is used for is to external world surveyed and is sought, and solves the environment noise problem before experiment, improves the stability and the reliability of visual electrophysiology equipment.
As shown in Figure 5, data collecting system comprises data acquisition master control system, the stimulation sample-synchronous control system, sampling system and the data transmission system that are connected with described data acquisition master control system.After the data acquisition master control system receives instruction from Computer Processing and management system by computer control interface, stimulation sample-synchronous control system and sampling system are controlled, and passed sampled data back Computer Processing and management system by data transmission system.
Stimulate the sample-synchronous control system that stimulation and sampling process are carried out synchronously, guarantee the temporal synchronous of data.
Sampling system comprises sub-function module such as analog digital conversion, data fetch and data buffering.
Data transmission system is delivered to Computer Processing and management system by the data connecting line road with data.
Data sampling has continuous sampling and is interrupted two kinds of patterns of sampling.
As shown in Figure 6, Computer Processing and management system comprise data receiving system, data handling system and Mk system, also comprise data base management system and print system in addition.Computer Processing and management control system are controlled pictorial stimulus device, full visual field stimulator, bioelectric amplifier, data collecting system by computer control interface, receive sampled data by data receiving system, then by data handling system, Mk system, print system respectively to data handle, the operation of labelling and printout; The data base management system can realize the management of data.
Data receiving system receives sampled data, and data are decoded.
Data handling system is finished amplification to data, is dwindled, translation, upset, average, stack, filtering and Digital Signal Processing.
Mk system provides labelling, measurement, statistics and the analysis to testing result.
Print system can be exported the print result of different-format, different-style and different paper according to user's needs.
The data base management system manages the case history mode of data according to the patient, and can realize data ordering, search.
Computer Processing and management system are full Chinese interface, and friendly man-machine interaction provides the joint operation of keyboard, mouse, promptly learn promptly can INTERFACE DESIGN, the true color pictorial display, but and the self-defining operation look ﹠ feel, greatly improved the simple degree of use of equipment.
Computer Processing and management system can be by checking the collection design function, and the specialist system of oneself is set up in self-defined test-based examination set for different clinical disease inspections.
Computer Processing and management system also equipment such as configurable recording optical driver provide reliable, jumbo backup for data.
Multifocal visual electrophysiology equipment based on the PC platform of the present utility model adopts the integrated design of conventional visual electrophysiology equipment and multifocal visual electrophysiology equipment, the advantage that not only has described two kinds of visual electrophysiology equipment, also satisfied International Society for Clinical Electrophysiology of Vision (ISCEV) coherence check standard better, improved the stability of system, capacity of resisting disturbance is strong, and easy to use.Therefore be applicable to that specialist carries out Clinical detection to patient's visual system, neural function.
Claims (10)
1, a kind of multifocal visual electrophysiology equipment based on the PC platform is characterized in that: the pictorial stimulus device, full visual field stimulator, bioelectric amplifier and the data collecting system that comprise Computer Processing and management system, be connected with management system with described Computer Processing; Wherein,
Described Computer Processing and management system comprise data receiving system, data handling system and Mk system;
Described pictorial stimulus device comprises pictorial stimulus device master control system, the conventional pictorial stimulus system and the Duo Jiao pictorial stimulus system that are connected with described pictorial stimulus device master control system;
After pictorial stimulus device or full visual field stimulator carry out visual stimulus to organism, bioelectric amplifier record stimulus data, data collecting system is carried out analog digital conversion to data then, and is transferred to Computer Processing and management system; After the data receiving system of Computer Processing and management system receives data, handle respectively and labelling by data handling system and Mk system.
2, the multifocal visual electrophysiology equipment based on the PC platform according to claim 1 is characterized in that: described full visual field stimulator comprises full visual field stimulator master control system, the flash stimulation device, EOG stimulator and the sound prompting apparatus that are connected with described full visual field stimulator master control system.
3, the multifocal visual electrophysiology equipment based on the PC platform according to claim 1 and 2 is characterized in that: the light source of described full visual field stimulator is a light emitting diode.
4, the multifocal visual electrophysiology equipment based on the PC platform according to claim 1 and 2 is characterized in that: described data collecting system comprises data acquisition master control system, the stimulation sample-synchronous control system, sampling system and the data transmission system that are connected with described data acquisition master control system.
5, the multifocal visual electrophysiology equipment based on the PC platform according to claim 4, it is characterized in that: described Computer Processing and management system also comprise data base management system and print system, are respectively applied for management and the printout of realization to data.
6, the multifocal visual electrophysiology equipment based on the PC platform according to claim 5 is characterized in that: described bioelectric amplifier comprises bioelectric amplifier master control system, the pre-amplifying circuit, secondary amplification circuit, high-frequency filter circuit, low-frequency filter circuit and the third level amplifying circuit that are connected with described bioelectric amplifier master control system; Wherein,
Described pre-amplifying circuit, secondary amplification circuit, high-frequency filter circuit, low-frequency filter circuit and third level amplifying circuit adopt cascade system to be connected successively.
7, the multifocal visual electrophysiology equipment based on the PC platform according to claim 6, it is characterized in that: described bioelectric amplifier also is connected with an interference search gear.
8, the multifocal visual electrophysiology equipment based on the PC platform according to claim 7 is characterized in that: the display field frequency that described pictorial stimulus device uses is higher than 100 hertz.
9, the multifocal visual electrophysiology equipment based on the PC platform according to claim 8 is characterized in that: the figure that described how burnt pictorial stimulus system uses is the many burnt figures that stimulate of concentric ring-shaped.
10, the multifocal visual electrophysiology equipment based on the PC platform according to claim 9 is characterized in that: described pictorial stimulus device master control system also is connected with the P300 stimulating system.
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| CNU2008201073029U CN201182599Y (en) | 2008-04-08 | 2008-04-08 | Multifocal visual electrophysiology equipment based on PC platform |
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| CNU2008201073029U CN201182599Y (en) | 2008-04-08 | 2008-04-08 | Multifocal visual electrophysiology equipment based on PC platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722244A (en) * | 2012-05-25 | 2012-10-10 | 西安交通大学 | Steady-state evoked potential brain-computer interface method based on motion turning vision sensing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722244A (en) * | 2012-05-25 | 2012-10-10 | 西安交通大学 | Steady-state evoked potential brain-computer interface method based on motion turning vision sensing |
| CN102722244B (en) * | 2012-05-25 | 2014-10-15 | 西安交通大学 | Steady-state evoked potential brain-computer interface method based on motion turning vision sensing |
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Granted publication date: 20090121 Termination date: 20110408 |