CN108784741A - A kind of ultrasound Transcranial Doppler analyzer and system - Google Patents
A kind of ultrasound Transcranial Doppler analyzer and system Download PDFInfo
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- CN108784741A CN108784741A CN201810501919.7A CN201810501919A CN108784741A CN 108784741 A CN108784741 A CN 108784741A CN 201810501919 A CN201810501919 A CN 201810501919A CN 108784741 A CN108784741 A CN 108784741A
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 40
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- 108010076504 Protein Sorting Signals Proteins 0.000 description 2
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- 101100208382 Danio rerio tmsb gene Proteins 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 206010061876 Obstruction Diseases 0.000 description 1
- 238000012300 Sequence Analysis Methods 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
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- 239000003146 anticoagulant agent Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0808—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of the brain
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/48—Diagnostic techniques
- A61B8/488—Diagnostic techniques involving Doppler signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/56—Details of data transmission or power supply
- A61B8/565—Details of data transmission or power supply involving data transmission via a network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
This application discloses a kind of ultrasonic Transcranial Doppler analyzer and systems, the ultrasound Transcranial Doppler analyzer is provided with wireless module in shell, and the wireless module is connected by data processing module with TCD modules, the ultrasonic Transcranial Doppler analyzer is connected by wireless network with host computer, the flexibility of ultrasonic Transcranial Doppler analyzer networking is improved.
Description
Technical field
This application involves field of medical technology, more particularly to a kind of ultrasonic Transcranial Doppler analyzer and system.
Background technology
With the development and application of transcranial Doppler technology, guarded in nerve, the demand of Intensive Care Therapy is more and more.It is existing
Ultrasonic transcranial Doppler blood flow analysis instrument be single machine, and need be connected by the information system with hospital realize connection
Net.But existing ultrasonic transcranial Doppler blood flow analysis instrument, which can not be suitable for the cerebral injury of outdoor occasion very well, brain is damaged etc. leads
The cerebral hemorrhage of cause or brain extravasated blood, subarachnoid hemorrhage, intracranial vessel obstruction, Acute Stroke, cerebral concussion inspection, intracranial vessel
Hemodynamic change etc. after obstruction during anticoagulant therapy.
Invention content
In view of the deficiencies in the prior art, the application is intended to provide a kind of ultrasonic Transcranial Doppler analyzer and system, with logical
It crosses and is adding wireless module, to solve the problems, such as ultrasonic Transcranial Doppler analyzer networking.
In order to solve the above-mentioned technical problem, technical solution used by the application is as follows：
A kind of ultrasound Transcranial Doppler analyzer comprising：Shell is provided with TCD modules, data processing module in the shell
And wireless module；The TCD modules are connected with the data processing module, the data processing module and the wireless mould
Block is connected, and the ultrasound data of the TCD modules acquisition is sent after being handled by the processing chip by the wireless module
To host computer.
The ultrasound Transcranial Doppler analyzer, wherein be provided with USB interface on the shell, be arranged in the shell
There is USB controller, the USB controller is connected with TCD modules, the data processing module and USB interface respectively, described
USB controller receives the ultrasound data of TCD modules acquisition, and ultrasound data distribution is transmitted to USB interface and data
Processing module.
The ultrasound Transcranial Doppler analyzer, wherein battery module, the battery module point are provided in the shell
It is not connected with the TCD modules and data processing module, with for the TCD modules and data processing module power supply.
The ultrasound Transcranial Doppler analyzer, wherein be provided with power interface on the shell, be arranged in the shell
Have a power management module, the power interface for being connected with external power adapter, the power management module respectively with
The power interface and battery module are connected.
The ultrasound Transcranial Doppler analyzer, wherein the data processing module is embedded core board, the insertion
Formula core is connected by System Management Bus with power management module, and it passes through System Management Bus and the battery mould
Block is connected.
The ultrasound Transcranial Doppler analyzer, wherein the TCD modules include TCD expelling plates and TCD control panels,
It is connected with the TCD control panels configured at least two-way PW transmittings/receiving channel, the TCD expelling plates on the TCD expelling plates
It connects, the TCD control panels are connected by USB with the data processing module.
The ultrasound Transcranial Doppler analyzer, wherein be provided with network interface on the shell, the network interface with
The data processing module is connected, the ultrasound data for receiving data processing module transmission, and the ultrasound data is led to
It crosses cable network and is sent to host computer.
The ultrasound Transcranial Doppler analyzer, wherein be provided with probe interface on the shell, the probe interface with
The TCD modules are connected, and to be connected with external probes by the probe interface, and the signal of external probes acquisition are sent out
It send to TCD modules.
A kind of wearable ultrasonic transcranial Doppler acquisition system comprising as above any ultrasonic transcranial Doppler
Analyzer is popped one's head in, and the exterior terminal of corresponding wireless network, institute are configured with the ultrasonic Transcranial Doppler analyzer
Probe is stated with ultrasonic Transcranial Doppler analyzer to be connected, the ultrasound Transcranial Doppler analyzer by wireless network with it is described
Host computer is connected, and collected ultrasound data is sent to host computer by wireless network.
Advantageous effect：Compared with prior art, this application provides a kind of ultrasonic Transcranial Doppler analyzer and system, institutes
It states ultrasonic Transcranial Doppler analyzer and is provided with wireless module in shell, and the wireless module is passed through into data processing module
It is connected with TCD modules so that the ultrasound Transcranial Doppler analyzer can be connected by wireless network with host computer, be improved
The flexibility of ultrasonic Transcranial Doppler analyzer networking.
Description of the drawings
Fig. 1 is the structure principle chart of one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application.
Fig. 2 is the structural schematic diagram of one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application.
Fig. 3 is former for the circuit of USB controller in one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application
Reason figure.
Fig. 4 shows for the structure of battery cover component in one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application
It is intended to.
Fig. 5 shows for cuing open for battery cover component in one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application
Figure.
Fig. 6 be ultrasonic Transcranial Doppler analyzer provided by the present application one embodiment in knocker structural schematic diagram.
Fig. 7 is in PW transmitting and receiving circuit in one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application
Mixer.
Fig. 8 be ultrasonic Transcranial Doppler analyzer provided by the present application one embodiment in power management module interface
Sequence diagram.
Fig. 9 is TCD control panels and adc circuit in one embodiment of ultrasonic Transcranial Doppler analyzer provided by the present application
Between data-interface connection figure.
Specific implementation mode
The application provides a kind of ultrasonic Transcranial Doppler analyzer and system, for make the purpose of the application, technical solution and
Effect is clearer, clear, and the application is further described in the embodiment that develops simultaneously referring to the drawings.It should be appreciated that herein
Described specific embodiment only to explain the application, is not used to limit the application.
Below in conjunction with the accompanying drawings, by the description of the embodiment, being described further to application content.
Embodiment one
A kind of ultrasonic Transcranial Doppler analyzer is present embodiments provided, as illustrated in fig. 1 and 2 comprising shell, TCD modules
100, data processing module 200 and wireless module 300, the TCD modules 100, data processing module 200 and wireless module
300 may be contained in the shell, and the TCD modules 100 pass through the data processing module 200 and the wireless module 300
It is connected, the ultrasound data that the TCD modules 100 acquire is transmitted to data processing module 200, and data processing module 200 passes through
The ultrasound data is sent to host computer by the wireless module 300, wherein the host computer has and the wireless module
300 corresponding communication modules.The present embodiment by wireless communication module by the ultrasonic Transcranial Doppler analyzer with it is upper
Machine is connected, and increases the flexibility of ultrasonic Transcranial Doppler analyzer networking.
As shown in Fig. 2, the shell may include upper cover 11, lower cover 22 and center 13, the upper cover 11, center 13 with
And lower cover 22 is set gradually to form the shell with accommodation space, the TCD modules 100, data processing module 200 and nothing
Wire module 300 may be contained in the accommodation space.It can be provided with indicator light, power switch 18 on the shell, reset and open
Close 15, USB interface, network interface, power interface, fan mouth, probe interface and probe motor interface etc..Wherein, the finger
Show that lamp can be set on the center 13；The power switch 18 and reset switch 15 are arranged side by side one in the center 13
On a side；The automatic probe motor interface and probe interface are arranged side by side on a side of center 13, and institute
It states automatic probe motor interface and probe interface all can be one or more；The USB interface, network interface, power supply
Interface and fan interface are set on a side of shell, it is preferable that described to be provided with USB interface, network interface, power supply
It the side of interface and fan interface can be opposite with probe motor interface and the side of probe interface automatically is provided with.
In addition, being provided with fan component 14 in the shell, the fan component 14 is connected and leads to the center 13
The fan mouth is crossed to take a breath.It can be provided with foot pad on the lower cover 22, when the shell is positioned over lay down location, pass through
The foot pad improves the stability of the shell.
The wireless module 300 can be WIFI module, 4g modules and 5g modules etc..Also, the wireless module 300
May include wireless chip and wireless antenna 12, the wireless antenna 12 is connected with the wireless chip, passes through the nothing
Wireless signal is sent to host computer by wire antenna 12, and receives the control information that host computer is sent by the wireless antenna 12.
In the present embodiment, configured with USB interface, either SDIO interfaces pass through the USB interface or SDIO to the wireless module 300
Interface is communicated with embedded core board, is preferably configured with USB interface here.Meanwhile the work of the wireless module 300
Frequency range：2.4GHz/5GHz, supported protocol：802.11n/802.11ac；Data throughput：>=300Mbps；System drive is supported:
Linux system（3.X, or 4.X）.
As shown in Figure 1, USB controller 700 is provided in the shell, the USB controller 700 and the TCD modules
100 are connected, to receive the ultrasound data of the acquisition of TCD modules 100.In addition, the USB controller 700 also at the data
Reason module 200 and the USB switches 800 in shell are connected, the ultrasonic number that will be received by the USB switches 800
According to being respectively sent to data processing module 200 or USB interface.In practical applications, the USB controller 700 is controlled for USB2.0
Device processed, the USB2.0 controllers receive the ultrasound data of 100 acquisition of TCD modules, and by the ultrasound data with standard
USB2.0 is transferred out.Wherein, the usb signal of the USB2.0 controllers output, can export to USB switches 800, and pass through
The USB interface is transmitted to host computer；The usb signal can also be exported by USB switches 800 to data processing module 200
USB interface, the usb signal is converted to wireless signal by data processing module 200, and by the wireless signal transmission to nothing
The wireless signal is sent to host computer by wire module 300 by the wireless module 300.Transcranial Doppler has been achieved
The wireless transmission of ultrasound data.
Further, the USB controller 700 is used for realizing the variation of communication link, may be used TI's
TS3USB221A-Q1 chips.As shown in figure 3, the D+ of the TS3USB221A-Q1 chips, D- pins and the USB of TCD modules connect
Mouth is connected, and 1D+, 1D- pins are connected with USB interface, 2D+, and 2D- pins are connected with the USB interface of embedded core board,
And 2D+, 2D- pin are connected to the USB interface of embedded core board when S is high.The TS3USB221A-Q1 chips acquiescence
It is low for Enable, OE.The electric current of the TS3USB221A-Q1 chips in the operational mode is 400uA, and operating voltage is
3.3V, and have the function of that ESD includes, and USB interface is configured with ESD protective device.The TS3USB221A-Q1 chips by
TCD modules control its work, and when the channels USB switch, need to interrupt switch after current ongoing USB work it is logical
Road.For example, TCD data should interrupt the usb data access of TCD, then switch in communication.
In addition, the shell is provided with network interface 900, the data processing module is connected with the network interface 900
It connects, and is connected with host computer by cable network by the network interface.In the present embodiment, the network interface is preferred
For RJ45 wired network interfaces, long distance transmission may be implemented in this way.
As shown in Fig. 2, be provided with battery module 400 in the shell, the battery module 400 respectively with the TCD moulds
Block 100 and data processing module 200 are connected, and are the TCD modules 100 and the data by the battery module 400
Processing module 200 is powered.In the present embodiment, the battery module 400 is using by the 4 section concatenated electricity of 18650 lithium ion batteries
Pond group, wherein the battery capacity of the battery module be 2600mAH, nominal voltage 14.8V, ending discharge voltage 12V,
Size is 76*70*19mm, and maximum continuous discharge electric current is 3A.In addition, the battery module configured with charged pool defencive function and
The battery of managing electric quantity controls chip, and the battery control chip preferably uses BQ24770 chips, the BQ24770 chips
SMBUS interfaces are provided with, protection power source can be configured by the SMBUS interfaces, for example, the acquiescence ending discharge voltage of configuration
12V, overshoot voltage 17V and overcurrent protection 10A.Wherein, the pull-up level of the SMBUS of the BQ4050 chips is VCC_3V3,
SMBUS agreements are V1.1.The ultrasonic Transcranial Doppler analyzer described in this way may not need is powered using 220v so that it can be fitted
For outdoor detection and monitoring, while collected data can also be transmitted to by wireless module positioned at doctor's office
Host computer or monitoring center host computer, for doctor carry out analyzing processing.In addition, the ultrasound transcranial doppler analysis
Instrument itself is configured with battery module so that described its is not necessarily to repeat switch machine in moving process, on the one hand easy to be described super
On the other hand the use process of sound Transcranial Doppler analyzer can improve the continuity of data acquisition, improve detection and analysis
Efficiency, especially patient transport when, need not again switching on and shutting down and adjust monitoring parameters.
Further, as shown in Fig. 2, being provided with battery holding tank in the shell, battery cover group is provided on the shell
Part 20, the battery cover component 20 are partially disposed in the shell, and the battery cover component 20 is placed in the part in the shell
It is detachably connected with the center 13.The battery holding tank is matched with the battery cover component 20 to get along for accommodating electricity
First accommodating chamber of pond module, the battery module 400 are located in first accommodating chamber and removable with the battery holding tank
Connection is unloaded, so that the battery module 400 can be replaced, to which reduction avoids the service life because of battery module and influences ultrasound
The service life of Transcranial Doppler analyzer；It is also convenient for outdoor non-transformer and supplies seasonable detection and/or monitoring.
In the present embodiment, as Figure 4-Figure 6, the battery cover component 20 includes battery cabin cap 206, the battery cabin cap
206 one end are provided with trepanning, and the other end is provided with buckle, described to buckle for being matched with the fluting being set on center 13,
So that the battery cabin cap 206 is provided with one end of buckle and the center 13 is detachably connected.On the battery cabin cap 206
Groove is set, and the trepanning is connected to the groove.Knocker 205 is provided in the groove, the knocker 205 is placed in described recessed
It is slidably connected in slot and with the groove.The knocker 205 includes knocker ontology, and knocker ontology one end is provided with and trepanning
Matched knocker screens 2051, the other end is provided with elastic arm 2052 and the elastic arm 2052 is kept away from the groove
The inner wall of hole side is in contact, the knocker screens 2051 pass through the trepanning and with the knocker card hole phase that is set on center 13
Cooperation, when the elastic arm 2052 is in no compressive state, the knocker screens 2051 is placed in the knocker card hole, will
The battery cabin cap 206 is connect with the center 13.
In addition, in order to control the position relationship between the knocker and the center 13, convenient for the battery cabin cap 206 with
The center 13 is detachably connected, and the battery cover component further includes knob 201, spacer pin 203 and nut 202；The rotation
Button 201 sequentially passes through the battery cabin cap 206 and knocker 205, the spacer pin 203 be sheathed on the knob 201 and with institute
Knocker 205 is stated to be in contact；The knob 201 is close to the bottom surface of one end of battery cabin cap 206 and the battery cabin cap 206 far from door
It detains 205 sides to be in contact, the knob 201 passes through one end of spacer pin 203 with the nut 202 to be connected, the knob 201
Knocker 205 can be driven to be moved relative to the battery cabin cap 206；When knob 201 in the raw when, the elastic arm
2052 in no compressive state, and the knocker screens 2051 of the knocker 205 passes through trepanning to coordinate with the center 13, to fix
State battery cabin cap 206 so that battery cover component is in connection status with the center 13；When turning knob 201, knob 201
Knocker 205 is driven to move by spacer pin 203, the elastic arm 2052 is in compressive state, the knocker screens 2051 and position
In the knocker bayonet separation on center 13 so that the battery cabin cap 206 is separated with the center 13, in this way can be by battery cover
Component is opened, and realizes the taking-up and replacement of battery.In the present embodiment, the battery cover component further includes sponge 204, the sea
Silk floss 204 is set on the knocker 205, and when the battery cover component is connected with center 13, and the sponge 204 compresses
The battery module is fixed to play the role of to the battery module.
Further, as shown in Figure 1, being provided with power management module 600 in the shell, the Circuit management module 600
It is connected respectively with the power interface and battery 400 being set on shell, to switch the TCD,transcranial Doppler Doppler Analyzer
Powering mode.The power interface is connected with power supply adaptor 500 and is connected, with by the power supply adaptor 500 and outside
Portion's power supply is connected, and the power supply adaptor 500 can pass through the power management module 600 and the battery module
400 are connected, with by power supply adaptor 500 be TCD,transcranial Doppler Doppler Analyzer power supply when, the power supply adaptor
500 can be the charging battery module.In the present embodiment, the power management module 600 can be charging management chip
（Such as, DCDC-TPS54620 model chips）, when being powered using power supply adaptor 500, the power supply of the output of power supply adaptor 500
The charged managing chip of power supply is used to charge after being converted into or system power supply, when powering only with battery module 400, charging valve
Reason chip is not converted the supply voltage of battery module, and when the supply voltage of battery module 400 is less than predetermined threshold value,
Set the power supply of battery module to predetermined system minimum voltage, and the charging management chip exports battery module
3 groups of power supplys are converted to after predetermined system minimum voltage, are 5V, 12V and 3.3V respectively, wherein the 12V is used to be TCD modules
It powers with fan, the 3.3V is used to power for data processing module and WiFi, and the 5V powers for USB interface.
In addition, after the supply voltage of the TCD modules can be converted by the charging management chip, using switch electricity
Source voltage stabilizing, the electric current after power supply voltage stabilizing pass through filtering（Such as, EMI is filtered）Afterwards enter TCD modules power input, with for
The TCD module for power supply.The supply voltage of the TCD modules can also pass through switching battery module（Such as, LT3480 or
LT3580）5 groups of different voltages are converted to, 5 groups of different voltages can be respectively 7V, -7V, 3.3V, -12V, 6V.Wherein, institute
It states in 5 groups of voltages and is used in the presence of voltage all the way to connect the probe power supply of the TCD,transcranial Doppler Doppler Analyzer, for example, using
V6MOT motor powers circuit.V6MOT motor powers circuit inputs Bulk decompressions by 12V and gets, and IC is in library
LT3480 chips, outputting inductance capacitance are preferably value 3.3uH, and output capacitance is preferably value 100uH；12V electric power loops
The duty ratio of main power inductance is calculated as 0.53, inductance value 3.3uH.
Embedded core board may be used in the data processing module 400, and the embedded core board passes through system administration
Bus is connected with power management module 600, the embedded core board by System Management Bus respectively with the battery mould
Block 400 is connected with TCD modules 100.Wherein, as shown in Fig. 2, the embedded core board can be set to the pcb board 16
On, and the power management module and wireless module can be set on the pcb board 16.
In the present embodiment simultaneously, the embedded core board is excellent uses ARM core boards, for example, selecting Phytec's
I.MX6 Cortex A9 core boards.The embedded core board is for controlling ultrasound data forwarding, battery module managing and confession
Electric power management etc., the embedded core board way system management bus protocol SMBus agreements are connected with the battery module,
It is connected with the TCD modules by USB OTG interfaces so that be based between the data management module and the TCD modules
Usb protocol carries out data transmission, and is connected with wireless module by USB Host or SDIO.In addition, the embedded core
The power input of plate is 3.3V, and it is internally provided with power-supply controller of electric（PMIC）, the power-supply controller of electric includes that switch turns
Change unit, linear converting unit, output logic unit, core cell, DDR and its reference unit, peripheral unit, storage unit with
And IO power supply units etc..In addition, the USB interface, network interface, power interface, reset switch and power switch are and institute
Embedded core board is stated to be connected.
In addition, usb signal can be converted to wireless signal by the embedded core board, to realize the transcranial Doppler
Analyzer can be communicated by wireless signal and host computer, meanwhile, the embedded core board be additionally operable to battery management with
And sound-light prompting function.For example, the embedded core board is as USB Host, the data interaction carried out with the TCD modules,
Wherein, the data include that the ultrasound data of TCD modules acquisition and host computer are sent to the control data of TCD modules.In addition, institute
The USB host that wireless module can also be used as embedded core board are stated, the usb data of host computer is forwarded by wireless module.
In addition, the embedded core board can also control the management of charging and discharging, electric quantity monitoring and current monitoring of battery module, by battery
The state of module, which is dealt into upper computer software, to be presented.And when being connected with host computer by USB, the electricity of battery module is logical
Cross indicator light and buzz prompt.
The TCD modules 100 include TCD expelling plates 21 and TCD control panels 19, are configured on the TCD expelling plates 21
At least two-way PW transmittings/receiving channel, the TCD expelling plates 21 are connected with the TCD control panels 19, the TCD control panels
19 are connected by USB with the data processing module 200.In the present embodiment, as shown in Fig. 2, the TCD control panels 19 are logical
It crosses connector and mutually carries out power supply and signal transmission with the embedded core board, and the two is fixed together by bolt column；Institute
State TCD expelling plates 21 and power supply and signal transmission carried out by connector and the TCD control panels 19, and the two by bolt column with
The TCD control panels 19 are fixed together.The embedded core board is connected with the center 13 with by the embedded core
Core is fixed in the shell, and heat conductive silica gel is provided on the embedded core board, and the heat conductive silica gel is located at institute
It states embedded core board and is disposed with heating element position, and above the heating element, heating element is produced
Raw heat transmission is to upper cover 11, wherein the upper cover 11 is preferably aluminum alloy materials.It is provided on the TCD expelling plates 21
Shielding case is also equipped with heat conductive silica gel, the heat that the heat conductive silica gel generates the component of TCD expelling plates on the shielding case
It imports on lower cover 22, wherein the lower cover 22 is preferably aluminum alloy materials.In the present embodiment, the embedded core board,
TCD control panels and TCD expelling plates can be fixed with upper cover 11 by TCD probe connecting brackets and fan connecting bracket under
Between lid 22, to ensure that signal is interference-free, so as to provide anti-interference ability.
Further, at least two-way PW transmittings and receiving circuit are disposed on the TCD expelling plates 19, the PW emits and connects
The ultrasonic signal that circuit receives the probe acquisition being connected with the TCD,transcranial Doppler Doppler Analyzer by probe interface is received, and
The ultrasonic signal was transmitted to TCD control panels, host computer is sent to by USB by the TCD control panels, acquisition passes through
The TCD control panels and embedded core board are sent to host computer by network.In the present embodiment, the PW emits/connects
It includes receiving channel and transmission channel to receive channel, and the receiving channel includes receiving branch and amplification branch；The receiving branch
Including according to sequentially connected first resonance circuit of electric signal sequence, pre-amplification circuit（Such as, EL2125）, postposition amplifying circuit
（Such as, OPA2822）, frequency mixer, filter circuit, single-ended transfer difference circuit and analog-digital converter（Such as, AD7961）；The amplification
Branch includes the operational amplifier circuit being sequentially connected with according to digital signal（Such as, OPA2822）And frequency mixer；The receiving branch connects
The ultrasonic signal that external probes are sent is received, the amplification branch is used to receive the control signal of control panel, the control signal
It is mixed in frequency mixer with ultrasonic signal.
Further, the transmission channel include transmitting branch and leakage electric discharge road, the transmitting branch include transmitting branch and
Branch is driven, the transmitting branch includes the digital analog converter being sequentially connected with according to digital signal（Such as, AD5628）, power
Amplifying circuit, transformer and the second resonance circuit；The driving branch includes the be sequentially connected with according to digital signal
A pair of MOS drivers（Such as, MD1210）With the first field-effect tube（FDS89161LZ）, first field-effect tube and the transformation
Device is connected；Leakage electric discharge road includes feeling second pair of MOS driver according to digital signal sequence successively face（Such as,
MD1210）, the second field-effect tube（Such as, FDS4559）, diode（Such as, MMSD4148T1G）And resistance, the resistance and institute
It states resonant network and collects and be set to probe interface on shell.Wherein, the leakage electric discharge road is for transmitting branch completion of releasing
Residual voltage after transmitting, the transmitted waveform that the driving branch is used to that transformer to be made to generate are transmitted to the first resonance circuit, institute
The control signal that transmitting branch controls chip emission for receiving TCD is stated, and control signal is emitted to external probe.
In addition, the pull down resistor of the IF output ends of frequency mixer is 1k in the PW transmission and reception circuits, to reduce mixing
The decaying of device output improves SNR, meanwhile, in one 0.01uF capacitance of 1k resistor in parallel, when reduction Gate is small, bottom is made an uproar
Fluctuation.In the present embodiment, the circuit of the frequency mixer can be as shown in Figure 7.
Further, in PW transmittings and receiving circuit, the dynamic range of the input signal of the adc circuit is 80-
86d.In addition, in order to further illustrate the adc circuit, illustrated in terms of several here.
First aspect：Reference power supply and common-mode voltage source
The reference voltage of the reference power supply selects the configuration of REF=4.096, and the voltage range of such demodulator output is +/-
4V, the gain after demodulation is about 20dB, therefore it is +/- 4V that the voltage of ADC inputs, which expires width,；Reference power supply may be used ADI's
ADR444ARZ can also use ADR4540, in the present embodiment, preferably ADR444ARZ.In addition, the REF of the adc circuit is defeated
Enter the value that impedance is a dynamic change, and place decoupling capacitance at the pin of REF, to reduce the voltage of driving REF
The impedance in source.In addition, being provided with Buffer circuits between reference power supply and REF inputs（Such as, using OPA2209）, driven with reducing
The output impedance of dynamic circuit.Meanwhile the VCM male model output ends of the adc circuit are provided with Buffer circuits（Such as, it uses
OPA2209）, pass through the common mode electrical level input terminal of Buffer circuit drives THS4130.That is, each adc circuit is equal
One OPA2209 of collocation is used, and REF is provided with a piece of ADR444ARZ, can ensure so same channel I and Q it
Between, the consistency of different interchannel.In addition, the REF of each adc circuit is by individually Buffer circuits offer all the way, the ADC of I and Q
The common mode electrical level of driving circuit is used to be driven with driving circuit all the way.
Second aspect, protection circuit
The ADC driving circuits are powered using +/- 6V, and the input stage of ADC is powered for+5V, thus in order to protect the input of ADC
Grade increases protection diode in the input stage of ADC.Certainly, in practical applications, welding protection diode can also be not necessarily to.
The third aspect, interface sequence analysis
The adc circuit uses Echoed Clock patterns, in addition to be input to the data clock CLK of ADC ±, ADC can also be outward
Output data synchronised clock DCO ±, and by DCO ± come synchronizing signal, with the time window optimized.In addition, in PCB
When cabling, data sync clock DCO ± and data D ± isometric.Meanwhile according to the sample rate of the ADC in channel 1/2 being 3.6M, it is main
Clock frequency is 64.8M and the sequential limitation of adc circuit, the work schedule of the AD7961 are as shown in Figure 8.It can be with from Fig. 8
It obtains, the TCDKL that the sequential of the adc circuit starts in the rising edge of CNV（It is up to 160ns）16bit data in time
It takes away, and simultaneously because AD conversion starts from the rising edge of CNV, and need to wait for tMSB（It is up to 200ns）Data are just accurate afterwards
After standby, therefore the time window for evidence of fetching is limited, is up to<tCYC-tMSB+TCDKL>（TCYC is the period of CNV）, by
It is 16/ that minimum CLK clock frequencies, which can be calculated, in this<tCYC-tMSB+TCDKL>, be 67.3MHz herein, this when
Master clock frequency 64.8MHz high of the clock frequency than us, it is therefore desirable to which clock frequency improves.
In order to improve clock frequency, increase the interface circuit of single-ended transfer difference（The pin of FPGA could will be made upon configuration
It is used for LVDS pins, and dedicated LVDS interface circuit shows as LVDS characteristics after the power-up）, the VCCO power supplys of FPGA
The 1.8V power supplys for pouring into adc circuit are inserted into level-one transceiver, using TI's between adc circuit and FPGA
SN65LVDS049PWR.The connection figure being inserted into after transceiver is as shown in Figure 9.As can be drawn from Figure 9, for td1 and td2
Two buffer, if CLK frequency is 129.6MHz, then the maximum delay time of buffer is both less than the half of clk cycle,
I.e. before input is overturn again, overturning has been stablized in output；For td3, can be according to the CLK frequency maximum value of adc circuit
250MHz（Representative value）, and the maximum value of td3 is 5ns, has been more than the half in CLK minimum allowable periods, so adc circuit should
It is to have internal mechanism to ensure that DCO clocks are the mirror images of CLK clocks, as long as CLK works in the maximum frequency of permission（250MHz）
Below；The input of DCO is output to from the CLK of FPGA, the delay of entire link is up to 12.5ns, and CLK frequency is added and is
129.6MHz, this delay maximum value has been more than a clk cycle, so as to use DCO as the synchronised clock of gathered data.
Embodiment two
Present embodiments provide a kind of wearable ultrasonic transcranial Doppler acquisition system comprising as above any ultrasound
Transcranial Doppler analyzer, probe, and it is configured with corresponding wireless network with the ultrasonic Transcranial Doppler analyzer
Exterior terminal, the probe are connected with ultrasonic Transcranial Doppler analyzer, and the ultrasound Transcranial Doppler analyzer passes through nothing
Gauze network is connected with the host computer, and collected ultrasound data is sent to host computer by wireless network.
Finally it should be noted that：Above example is only to illustrate the technical solution of the application, rather than its limitations；Although
The application is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of ultrasound Transcranial Doppler analyzer, which is characterized in that it includes：Shell is provided with TCD moulds in the shell
Block, data processing module and wireless module；The TCD modules are connected with the data processing module, the data processing
Module is connected with the wireless module, the ultrasound data of TCD modules acquisition, after being handled by the processing chip by
The wireless module is sent to host computer.
2. ultrasonic Transcranial Doppler analyzer according to claim 1, which is characterized in that be provided with USB on the shell and connect
Mouthful, be provided with USB controller in the shell, the USB controller respectively with TCD modules, the data processing module and
USB interface is connected, and the USB controller receives the ultrasound data of TCD modules acquisition, and the ultrasound data is distributed and is transmitted
To USB interface and data processing module.
3. ultrasonic Transcranial Doppler analyzer according to claim 1, which is characterized in that be provided with battery mould in the shell
Block, the battery module are connected with the TCD modules and data processing module respectively, at for the TCD modules and data
Manage module for power supply.
4. ultrasonic Transcranial Doppler analyzer according to claim 3, which is characterized in that be provided with power supply on the shell and connect
Mouthful, power management module is provided in the shell, the power interface with external power adapter for being connected, the electricity
Source control module is connected with the power interface and battery module respectively.
5. ultrasonic Transcranial Doppler analyzer according to claim 4, which is characterized in that the data processing module is insertion
Formula core board, the embedded core board is connected by System Management Bus with power management module, and it passes through system
Management bus is connected with the battery module.
6. ultrasonic Transcranial Doppler analyzer according to claim 1, which is characterized in that the TCD modules include TCD transmittings
Plate and TCD control panels, configured at least two-way PW transmittings/receiving channel on the TCD expelling plates, the TCD expelling plates with
The TCD control panels are connected, and the TCD control panels are connected by USB with the data processing module.
7. ultrasonic Transcranial Doppler analyzer according to claim 1, which is characterized in that be provided with network on the shell and connect
Mouthful, the network interface is connected with the data processing module, the ultrasound data for receiving data processing module transmission, and
The ultrasound data is sent to host computer by cable network.
8. ultrasonic Transcranial Doppler analyzer according to claim 1, which is characterized in that be provided with probe on the shell and connect
Mouthful, the probe interface is connected with the TCD modules, to be connected with external probes by the probe interface, and will be outer
The signal of portion's probe acquisition is sent to TCD modules.
9. a kind of wearable ultrasonic transcranial Doppler acquisition system, which is characterized in that it includes such as any institutes of claim 1-8
The ultrasonic Transcranial Doppler analyzer stated, probe, and it is configured with corresponding nothing with the ultrasonic Transcranial Doppler analyzer
The exterior terminal of gauze network, the probe are connected with ultrasonic Transcranial Doppler analyzer, the ultrasound transcranial doppler analysis
Instrument is connected by wireless network with the host computer, and by wireless network is sent to collected ultrasound data upper
Machine.
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|---|---|---|---|
| CN201810501919.7A CN108784741B (en) | 2018-05-23 | 2018-05-23 | Ultrasonic transcranial Doppler analyzer and system |
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Address after: 518000, 18th Floor, Building B, High tech Innovation Center, Guangqiao Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen, Guangdong Province Patentee after: Shenzhen Delikai Medical Electronics Co.,Ltd. Country or region after: China Address before: 6 / F, building 10, Guanlong Village Second Industrial Zone, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN DELICA MEDICAL EQUIPMENT Co.,Ltd. Country or region before: China |
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