CN110495905A - A kind of ultrasonic probe and ultrasonic testing system - Google Patents
A kind of ultrasonic probe and ultrasonic testing system Download PDFInfo
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- CN110495905A CN110495905A CN201910672429.8A CN201910672429A CN110495905A CN 110495905 A CN110495905 A CN 110495905A CN 201910672429 A CN201910672429 A CN 201910672429A CN 110495905 A CN110495905 A CN 110495905A
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- ultrasonic
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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
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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
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
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- Ultra Sonic Daignosis Equipment (AREA)
Abstract
This application involves a kind of ultrasonic probe and ultrasonic testing systems, including ultrasonic transducer, tuning coil array, and high voltage analog switch chip, the electric signal transmission end of the ultrasonic transducer is by tuning coil array for connecting ultrasonic host, the tuning coil array in parallel is connected to the both ends of the analog switch in each channel of high voltage analog switch chip, and the control terminal of the high voltage analog switch chip is for connecting ultrasonic host；When ultrasonic transducer emits ultrasonic signal, ultrasonic host control high voltage analog switch chip conducting, the electric signal that ultrasonic host issues is directly over high voltage analog switch chip and is applied to ultrasonic transducer；When ultrasonic transducer receives ultrasonic signal, the electric signal of conversion is reached ultrasonic host by ultrasonic host control high voltage analog switch cut-off, ultrasonic transducer after tuning coil.The application can avoid ultrasonic transducer by contrapolarization and breakdown, solve the problem of that existing ultrasonic transducer causes ultrasonic transducer to damage forever because existing by the risk of contrapolarization and breakdown.
Description
Technical field
The application belongs to the field of medical instrument technology, and in particular to ultrasonic machine technical field, more particularly, to a kind of ultrasound
Probe and ultrasonic testing system.
Background technique
Ultrasonic probe is a kind of medical instrument based on ultrasonic principle manufacture, cooperates ultrasonic host to use, such as Fig. 1 institute
Show, ultrasonic probe is electrically connected by cable with ultrasonic host, and ultrasonic probe is built-in with ultrasonic transducer and tuning coil, due to electricity
The perception of cable and the presence of tuning coil, so that the emitting voltage of ultrasonic host reaches ultrasonic transducer end after tuning
AC voltage magnitudes be up to peak-to-peak value 300V, such high voltage considerably increases ultrasonic transducer by contrapolarization and breakdown
Risk, once contrapolarization or breakdown, ultrasonic transducer can not repair permanent damages.
Summary of the invention
The technical problem to be solved by the present invention is contrapolarization and being hit to solve ultrasonic transducer in the prior art because existing
The risk worn, the problem of causing ultrasonic transducer to damage forever, to provide a kind of ultrasonic probe and ultrasonic testing system.
The present invention provides a kind of ultrasonic probe and ultrasonic testing system, super to protect by increasing high voltage analog switch chip
Sonic transducer is not damaged by emitting voltage, to protect ultrasonic transducer not by contrapolarization and breakdown.
The technical solution adopted by the present invention to solve the technical problems is: a kind of ultrasonic probe, and the ultrasonic probe also wraps
The high voltage analog switch circuit an of N channel is included, the high voltage analog switch circuit of the N channel includes the mould that N item is connected in parallel
Quasi- switching branches, the tuning coil array in parallel are connected to the input/output terminal of N analog switch branch, the analog switch
The switch control terminal of branch is used to connect the output end of ultrasonic host.
In the ultrasonic signal emission stage, switch control signal is issued by ultrasonic host, controls corresponding analog switch branch
Conducting, the electric signal that ultrasonic host issues are directly over high voltage analog switch circuit and are applied to ultrasonic transducer；
The stage is received in ultrasonic signal, switch control signal is issued by ultrasonic host, controls corresponding analog switch branch
Received ultrasonic signal is converted to electric signal by cut-off, ultrasonic transducer, and ultrasonic host is reached after tuning coil tunes.
By the embodiment above, the electric signal for issuing ultrasonic host is straight without the tuning coil of ultrasonic probe
It is connected to the peak-to-peak value that the emitting voltage for reaching ultrasonic transducer end is substantially reduced up to ultrasonic transducer, to substantially reduce ultrasound
Energy converter protects ultrasonic transducer by the risk of contrapolarization and breakdown.
Further, ultrasonic probe according to the present invention, the mould in each channel of the high voltage analog switch circuit
Quasi- switching branches both ends are connected in parallel to a tuning coil.
Further, ultrasonic probe according to the present invention, the high voltage analog switch circuit are high voltage analog switch
Chip, the high voltage analog switch chip are HV2701 chip or MAX4968 chip or MAX4968A chip.
Further, ultrasonic probe according to the present invention, one end of each tuning coil of the tuning coil array
It is connected to the analog switch signal input part of the high voltage analog switch chip, the other end is connected to the high voltage analog switch core
The analog switch signal output end of piece, and the analog switch signal output end of the high voltage analog switch chip connects ultrasonic transduction
The electrode of device.
Further, the data output end of ultrasonic probe according to the present invention, the ultrasound host connects high pressing mold
The serial data input port of quasi- switch chip, the control of the high voltage analog switch chip latched enable end and connect ultrasonic host
Output end processed.
The present invention is to solve its technical problem, additionally provides a kind of ultrasonic testing system, including ultrasonic host, and with institute
The ultrasonic probe of ultrasonic host electrical connection is stated, the ultrasonic probe is the ultrasonic probe in above-mentioned technical proposal.
Further, ultrasonic testing system according to the present invention, the ultrasound host includes control processor, described
Control processor is electrically connected by cable with ultrasonic probe.
Further, ultrasonic testing system according to the present invention, the ultrasound host is additionally provided with display, described
The signal output end of control processor connects display.
The beneficial effects of the present invention are: changing ultrasound by increasing high voltage analog switch chip inside probe to reach
The signal path for the electric signal that host issues makes the electric signal of ultrasonic host sending without the tuning coil of ultrasonic probe, greatly
It is big to reduce the peak-to-peak value for reaching the emitting voltage at ultrasonic transducer end, to substantially reduce ultrasonic transducer by contrapolarization and breakdown
Risk, protect ultrasonic transducer.
Detailed description of the invention
The technical solution of the application is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is existing ultrasound detection functional block diagram；
Fig. 2 is the schematic block circuit diagram of the ultrasonic testing system of the embodiment of the present application；
Fig. 3 is the circuit structure diagram of the ultrasonic testing system of the embodiment of the present application.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
It is described in detail the technical solution of the application below with reference to the accompanying drawings and in conjunction with the embodiments.
Ultrasonic probe embodiment
The present embodiment provides a kind of ultrasonic probes, for being used cooperatively with ultrasonic host, the ultrasonic probe and ultrasonic host
By cable connection, ultrasonic transducer and tuning coil array, the electric signal of ultrasonic transducer are provided in the ultrasonic probe
Transmission end is connected to ultrasonic host after passing through tuning coil array.
The electric signal that ultrasonic host issues reaches ultrasonic probe by cable, and passes through tuning coil battle array in ultrasonic probe
It is applied to the array element (such as: piezoelectric ceramics) of ultrasonic transducer after column, shakes array element, so that ultrasonic wave is issued, ultrasonic wave
It is acted in array element through measured object reflection-absorption, so that array element both ends is generated electric signal, then be sent to ultrasonic host by cable
Processing.
As shown in Fig. 2, making to surpass in order to avoid the voltage that the electric signal of ultrasonic host sending is applied to ultrasonic transducer is excessive
For sonic transducer by contrapolarization and breakdown, the present embodiment is provided with the high voltage analog switch circuit of a N channel in ultrasonic probe,
The high voltage analog switch circuit of N channel includes the analog switch branch that N item is connected in parallel, and each analog switch branch includes
One analog switch, such as metal-oxide-semiconductor issue switch control signal by ultrasonic host to control the conducting of analog switch and cut
Only, the on-off of control high voltage analog switch circuit can be realized.
Tuning coil array in parallel is connected to the input/output terminal of analog switch branch in high voltage analog switch circuit, ultrasound
Host issues switch control signal to the switch control terminal of analog switch branch, controls the conducting of corresponding simulation switching branches and cuts
Only.
As shown in figure 3, high voltage analog switch circuit uses the HV2701 chip in 16 channels, wherein drawing in the present embodiment
Foot SW0A~SW15A is respectively corresponded in 16 channels, a connecting pin of analog switch SW0~SW15, which is simulation
Switch signal input end；SW0B~SW15B is respectively corresponded in 16 channels, another connection of analog switch SW0~SW15
End, the connecting pin are analog switch signal output end.For example, SW0A and SW0B correspond to analog switch SW0 in HV2701 chip
Two connecting pins, SW1A and SW1B correspond to two connecting pins of HV2701 chip analog switch SW1.Tuning coil L1~L16 points
It is not connected in two connecting pins of corresponding channel analog switch in parallel, for example, the one end L1 connects the end SW0A, the other end connects SW0B
End, the one end L2 connect the end SW1A, and the other end connects the end SW1B.
The serial data output terminal of the ultrasonic host of the data input pin DIN connection of HV2701 chip, for receiving ultrasonic master
The 16 Bits Serial data that machine is sent, each in 16 Bits Serial data control the on-off of a path analoging switch, this implementation respectively
In example, when input data is high level, a corresponding path analoging switch is connected, corresponding when input data position low level
The shutdown of one path analoging switch.
The latch enable end LEN of HV2701 chip connects the control output end of ultrasonic host, issues for receiving ultrasonic host
Control signal, which is pulse signal, in the present embodiment, when the end LEN is low level, high voltage analog switch chip
Switch state keep before on or off state it is constant, analog switch SW0~SW15 is remained up or is turned off；Work as LEN
When end is high level, the switch state of high voltage analog switch chip changes according to the content of data input pin, analog switch
SW0~SW15 is changed to turn off or connect.
One connecting pin of each analog switch of HV2701 chip connects the electrode tip of ultrasonic transducer by electric wire, another
Connecting pin and ultrasonic host are electrically connected by cable (for example, for analog switch SW0, the end SW0A passes through cable and surpasses
The electrical connection of sound host, the end SW0B is electrically connected by the electrode of electric wire and ultrasonic transducer).The array element both ends of ultrasonic transducer
It is provided with electrode, which is used for transmission electric signal, in the ultrasonic signal emission stage, is used for transmission the telecommunications that ultrasonic host is sent
Number, which is applied to the both ends of array element；The stage is received in ultrasonic signal, for received ultrasonic signal to be converted to electricity
After signal, by electric signal transmission to ultrasonic host.
The specific working principle is as follows for the present embodiment ultrasonic probe: when ultrasonic probe wants transmitting ultrasonic signal, by surpassing
Sound host issues the ultrasonic transducer that electric signal is applied to ultrasonic probe, meanwhile, ultrasonic host is sent out by control signal output
Control terminal of the switch control signal to high pressure simulation switch chip out, control high voltage analog switch chip conducting, i.e. HV2701 core
Analog switch SW0~SW15 in piece is completely in closed state.
When due to the conducting of high voltage analog switch chip, impedance very little, and the impedance of tuning coil array is relatively large, ultrasound
The electric signal that host issues then selects the tuning without tuning coil array, but is directly over high voltage analog switch chip and arrives
Up to ultrasonic transducer.In this way, the voltage that the electric signal that ultrasonic host is issued is applied to ultrasonic transducer front end substantially reduces,
Ultrasonic transducer is avoided to occur by the risk of contrapolarization and breakdown.
When needing ultrasonic probe to receive ultrasonic signal, ultrasonic host, which issues switch control by control signal output, to be believed
Number to high pressure simulation switch chip control terminal, control high voltage analog switch cut-off.High voltage analog switch chip is in cut-off, resistance
It is anti-very big, it is equivalent to open circuit, i.e. analog switch SW0~SW15 in HV2701 chip is completely in open-circuit condition.
After ultrasonic transducer receives measured object reflected ultrasonic signal, it is converted into electric signal and defeated
Out, since the branch where high voltage analog switch chip is in open-circuit condition, the electric signal of ultrasonic transducer output is then passed through
Ultrasonic host is reached after crossing tuning coil tuning, is further processed by ultrasonic host, reaches same and increases signal-to-noise ratio
With the effect of impedance matching.
In other embodiments, high voltage analog switch chip also can choose 16 channels MAX4968 chip or
MAX4968A chip or other be able to achieve the analog switching circuit chip of anti-high pressure.In real work, it can select as needed
The high voltage analog switch chip of different port numbers, such as can choose the MAX4800A chip or MAX4802A core in 8 channels
Existing high voltage analog switch chip can also be extended by piece if necessary to 32 channels or more multichannel.
Ultrasonic testing system embodiment
The ultrasonic testing system of the present embodiment includes ultrasonic host and ultrasonic probe, and ultrasonic probe is surpassed by cable with described
The electrical connection of sound host, ultrasonic probe therein are the ultrasonic probe in above-mentioned ultrasonic probe embodiment.
Ultrasonic host includes control processor, the string of the data output end connection high voltage analog switch chip of control processor
Row data-in port, and the latch enable end of the control output end connection high voltage analog switch chip of control processor.
Further, the ultrasonic testing system of the present embodiment is additionally provided with display, the signal output end of control processor
Display being connected, being shown for will test result by display.
The application inside ultrasonic probe by increasing high voltage analog switch circuit and tuning coil in parallel, and and host
Control instruction cooperation changes the signal path that ultrasonic host arrives ultrasonic transducer, make the electric signal of ultrasonic host sending without
The tuning coil of ultrasonic probe, is applied directly on ultrasonic transducer, substantially reduces the emitting voltage for reaching ultrasonic transducer end
Peak-to-peak value protect ultrasonic transducer to substantially reduce ultrasonic transducer by the risk of contrapolarization and breakdown.
It is enlightenment with the above-mentioned desirable embodiment according to the application, through the above description, relevant staff is complete
Full various changes and amendments can be carried out in the range of without departing from this item application technical idea.The technology of this item application
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (7)
1. a kind of ultrasonic probe, including ultrasonic transducer and tuning coil array, the electric signal transmission end of the ultrasonic transducer
By tuning coil array for connecting ultrasonic host, it is characterised in that:
The ultrasonic probe further includes the high voltage analog switch circuit an of N channel, the high voltage analog switch circuit of the N channel
Including the analog switch branch that N item is connected in parallel, the tuning coil array in parallel is connected to the input of N analog switch branch
Output end, the switch control terminal of the analog switch branch are used to connect the output end of ultrasonic host；
In the ultrasonic signal emission stage, switch control signal is issued by ultrasonic host, controls corresponding analog switch branch conducting,
The electric signal that ultrasonic host issues is directly over high voltage analog switch circuit and is applied to ultrasonic transducer；
The stage is received in ultrasonic signal, switch control signal is issued by ultrasonic host, controls corresponding analog switch branch cut-off,
Received ultrasonic signal is converted to electric signal by ultrasonic transducer, and ultrasonic host is reached after tuning coil tunes.
2. ultrasonic probe according to claim 1, which is characterized in that the high voltage analog switch circuit is integrated high pressure
Analog switch chip, the high voltage analog switch chip are HV2701 chip or MAX4968 chip or MAX4968A chip.
3. ultrasonic probe according to claim 2, which is characterized in that one end of the tuning coil array is connected to described
The analog switch signal input part of high voltage analog switch chip, the simulation that the other end is connected to the high voltage analog switch chip are opened
OFF signal output end, and the electrode of the analog switch signal output end connection ultrasonic transducer of the high voltage analog switch chip.
4. ultrasonic probe according to claim 2, which is characterized in that the serial data output terminal connection of the ultrasound host
The serial data input of high voltage analog switch chip, the latch enable end of the high voltage analog switch chip connect ultrasonic host
Control output end.
5. a kind of ultrasonic testing system, including ultrasonic host, and the ultrasonic probe being electrically connected with the ultrasonic host, feature
It is, the ultrasonic probe is the described in any item ultrasonic probes of claim 1-4.
6. ultrasonic testing system according to claim 5, which is characterized in that the ultrasound host includes control processor,
The control processor is electrically connected by cable with ultrasonic probe.
7. ultrasonic testing system according to claim 5, which is characterized in that the ultrasound host is additionally provided with display,
The signal output end of the control processor connects display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672429.8A CN110495905A (en) | 2019-07-24 | 2019-07-24 | A kind of ultrasonic probe and ultrasonic testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672429.8A CN110495905A (en) | 2019-07-24 | 2019-07-24 | A kind of ultrasonic probe and ultrasonic testing system |
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| Publication Number | Publication Date |
|---|---|
| CN110495905A true CN110495905A (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910672429.8A Pending CN110495905A (en) | 2019-07-24 | 2019-07-24 | A kind of ultrasonic probe and ultrasonic testing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113892968A (en) * | 2021-09-14 | 2022-01-07 | 青岛海信医疗设备股份有限公司 | Ultrasonic instrument, ultrasonic probe detection method and ultrasonic host |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751662A (en) * | 2004-09-22 | 2006-03-29 | 株式会社东芝 | Ultrasonic diagnostic apparatus |
| CN101972154A (en) * | 2010-11-22 | 2011-02-16 | 中国医学科学院生物医学工程研究所 | Ultrasound emitting system for high frequency ultrasonic diagnostic equipment |
-
2019
- 2019-07-24 CN CN201910672429.8A patent/CN110495905A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751662A (en) * | 2004-09-22 | 2006-03-29 | 株式会社东芝 | Ultrasonic diagnostic apparatus |
| CN101972154A (en) * | 2010-11-22 | 2011-02-16 | 中国医学科学院生物医学工程研究所 | Ultrasound emitting system for high frequency ultrasonic diagnostic equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113892968A (en) * | 2021-09-14 | 2022-01-07 | 青岛海信医疗设备股份有限公司 | Ultrasonic instrument, ultrasonic probe detection method and ultrasonic host |
| CN113892968B (en) * | 2021-09-14 | 2023-09-05 | 青岛海信医疗设备股份有限公司 | Ultrasonic instrument, ultrasonic probe detection method and ultrasonic host |
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Application publication date: 20191126 |