CN114785374B - Receiving and transmitting circuit applied to B ultrasonic - Google Patents
Receiving and transmitting circuit applied to B ultrasonic Download PDFInfo
- Publication number
- CN114785374B CN114785374B CN202210511036.0A CN202210511036A CN114785374B CN 114785374 B CN114785374 B CN 114785374B CN 202210511036 A CN202210511036 A CN 202210511036A CN 114785374 B CN114785374 B CN 114785374B
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- circuit
- receiving
- transmitting
- mnhv2
- mnhv3
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- JVLBPIPGETUEET-GAAHOAFPSA-O methylnaltrexone Chemical compound C[N+]1([C@@H]2CC=3C4=C(C(=CC=3)O)O[C@@H]3[C@]4([C@@]2(O)CCC3=O)CC1)CC1CC1 JVLBPIPGETUEET-GAAHOAFPSA-O 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 4
- 230000003071 parasitic effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018507—Interface arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/40—Animals
Abstract
The invention discloses a receiving and transmitting circuit applied to B ultrasonic wave; belongs to a low-cost, multipath and high-voltage transceiver circuit applied to B ultrasonic; the circuit drives a load by using a high-voltage floating switch, uses a common device as a receiving circuit, realizes time-sharing control of TX and RX through optimized time sequence control, and integrates a receiving protection circuit. According to the scheme, the cost is greatly reduced, the parasitic capacitance of each node is greatly reduced, the speed and the sampling precision are improved, and meanwhile, the power consumption is reduced.
Description
Technical Field
The invention relates to the technical field related to livestock and poultry B ultrasonic detection equipment, in particular to a receiving and transmitting circuit applied to B ultrasonic.
Background
In the B-mode ultrasonic system (livestock B-mode ultrasonic detection apparatus), the transceiver circuits are generally separately driven. As shown in fig. 1, it includes a logic control and signal processing unit, a transmitting circuit, a high voltage switch array, an ultrasonic transducer, a receiving circuit clamp, and a receiving circuit. Logic and signal processing part, responsible for controlling the sending and receiving circuit, samples the received signal. The TX circuitry is responsible for transmitting the positive and negative pulses. The high-voltage switch array is responsible for opening the channels needing to be sampled and closing the channels needing not to be sampled. The ultrasonic transducer is responsible for transmitting the energy of the transmitting circuit into the interior of the object being sampled. The clamping circuit is responsible for clamping and protecting the receiving circuit. The RX is responsible for sampling and processing the returned waveforms. The transceiver circuit in the existing B ultrasonic system (livestock B ultrasonic detection equipment) is a discrete device scheme, and the power consumption is high.
Disclosure of Invention
Accordingly, in order to solve the above-described drawbacks, the present invention provides a transceiver circuit for use in B-mode ultrasound. A low-cost, multi-channel, high-voltage transceiver circuit for B ultrasonic; the circuit drives a load by using a high-voltage floating switch, uses a common device as a receiving circuit, realizes time-sharing control of TX and RX through optimized time sequence control, and integrates a receiving protection circuit. According to the scheme, the cost is greatly reduced, the parasitic capacitance of each node is greatly reduced, the speed and the sampling precision are improved, and meanwhile, the power consumption is reduced.
The invention is realized in such a way that a transceiver circuit applied to B ultrasonic is constructed, which is characterized in that;
the receiving and transmitting circuit is provided with 4 high-voltage MOSFETs (MPHV 1, MNHV1, MNHV2 and MNHV 3), so that the system complexity is greatly saved, and the chip cost is effectively reduced;
the NMOSFET devices MNHV2 and MNHV3 are connected with the receiving circuit driving module;
the grid driving control signal of the NMOSFET device MPHV1 is driven by a buffer of the buffer PDRV; the gate driving control signal of the NMOSFET device MNGV 1 is driven by a buffer of the buffer NDRV; gate drive control signals for NMOSFET devices MNHV2 and MNHV3 are provided by the receive circuit drive.
The invention relates to a receiving and transmitting circuit applied to B ultrasonic, which is characterized in that; the operation process of the transceiver circuit is as follows;
meanwhile, as the voltage sources of the driving circuit are VPP and VNN respectively, the transmitting/receiving point has positive and negative driving voltages relative to GND;
the CLK signal passes through the non-overlapping clock generating circuit and the PMOS level shifting circuit, and generates driving signals with high and low levels of VPP and VFP respectively in the transmitting stage, wherein the VFP is relatively lower than the VPP; when PDRV is VPP, MPHV1 is in a closed state; when the voltage of the PDRV is VFP, MPHV1 is in an on state;
CLK signal passes through non-overlapping clock generating circuit and NMOS level shift circuit, and generates driving signals with high and low level of VNN and VFN respectively in transmitting stage, wherein VFN is relatively higher than VNN; when the voltage of the NDRV is VNN, MNHV1 is in a closing state; when NDRV is VFN, MNHV1 is in an opening state;
in a transmission stage TX, a receiving circuit is driven to be in an off state, MNHV2 and MNHV3 are in an off state, TX/RX is driven to be in a high level, MNTX is in an on state, and an input signal of the receiving circuit is short-circuited to GND through MNTX;
in the receiving stage, TX/RX=0, MNTX is in an off state, a receiving circuit is driven to be on, MNHV2 and MNHV3 are in an on state, and HVOUT outputs received echo signals which are transmitted to the receiving circuit through MNHV2 and MNHV3 to finish subsequent signal processing; the receiving circuit has a self-protection function and can clamp the received signal.
The invention has the following advantages: the invention provides a receiving and transmitting circuit applied to B ultrasonic; a low-cost, multi-channel, high-voltage transceiver circuit for B ultrasonic; the circuit drives a load by using a high-voltage floating switch, uses a common device as a receiving circuit, realizes time-sharing control of TX and RX through optimized time sequence control, and integrates a receiving protection circuit. According to the scheme, the cost is greatly reduced, the parasitic capacitance of each node is greatly reduced, the speed and the sampling precision are improved, and meanwhile, the power consumption is reduced.
Drawings
FIG. 1 is a schematic diagram of a transceiver circuit in a conventional B-mode ultrasound system;
FIG. 2 is a schematic diagram of a transceiver circuit according to the present invention;
fig. 3 shows waveforms of signals of a transceiver circuit according to the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a receiving and transmitting circuit applied to B ultrasonic wave through improvement; as shown in fig. 2-3, may be implemented as follows;
the main body part of the invention only has 4 high-voltage MOSFETs, namely MPHV1, MNHV1, MNHV2 and MNHV3, thereby greatly saving the complexity of the system and effectively reducing the cost of the chip.
Meanwhile, since the voltage sources of the driving circuits are VPP and VNN, respectively, the transmitting/receiving point has positive and negative driving voltages with respect to GND.
The CLK signal passes through the non-overlapping clock generating circuit and the PMOS level shifting circuit, and generates driving signals with high and low levels of VPP and VFP respectively in the transmitting stage, wherein the VFP is relatively lower than the VPP. When PDRV is VPP, MPHV1 is in a closed state; when the voltage of PDRV is VFP, MPHV1 is in an on state.
The CLK signal passes through the non-overlapping clock generating circuit and the NMOS level shifting circuit, and generates driving signals with high and low levels of VNN and VFN respectively in the transmitting stage, wherein the VFN is relatively higher than the VNN. When the voltage of the NDRV is VNN, MNHV1 is in a closing state; when NDRV is VFN, MNHV1 is in an on state.
In the transmission phase TX, the receiving circuits are driven to be in an off state, MNHV2 and MNHV3 are driven to be in an off state, TX/RX is driven to be in a high level, MNTX is in an on state, and the input signals of the receiving circuits are shorted to GND through MNTX.
In the receiving stage, TX/rx=0, mntx is in an off state, while the receiving circuit is driven to be on, MNHV2 and MNHV3 are in an on state, HVOUT outputs the received echo signals, and the received echo signals are transmitted to the receiving circuit through MNHV2 and MNHV3 to complete subsequent signal processing. The receiving circuit has a self-protection function and can clamp the received signal.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A transceiver circuit applied to B ultrasonic is characterized in that;
the receiving and transmitting circuit is provided with 4 high-voltage MOSFETs, namely MPHV1, MNHV1, MNHV2 and MNHV3;
the NMOSFET device MNHV2 and the grid electrode of the NMOSFET device MNHV3 are respectively connected with a receiving circuit driving module, the source electrode of the MNHV2 is connected with the source electrode of the MNHV3, the drain electrode of the MNHV2 is the output (HVOUT) of a transmitting and receiving circuit, the drain electrode of the MNHV3 is connected with the receiving circuit and the drain electrode of the transmitting and receiving circuit pull-down NMOSFET device MNTX, and the grid electrode of the MNTX is connected with a transmitting and receiving mode control signal TX/RX;
the grid electrode of the PMOSFET device MPHV1 is connected with the output PDRV of the PMOS drive buffer, the input of the PMOS drive buffer is connected with the output of the PMOS drive level shift module, the power supply voltage of the PMOS drive buffer is connected with VPP, and the ground of the PMOS drive buffer is connected with the floating level VFP; the input of the PMOS driving level shift module is connected with the output 1 of the non-overlapping clock generation module, and the input signal of the non-overlapping clock generation module is a clock signal CLK;
the grid electrode of the NMOSFET device MNGHV 1 is connected with the output NDRV of an NMOS drive buffer, the input of the NMOS drive buffer is connected with the output of an NMOS drive level shift module, the power supply of the NMOS drive buffer is connected with the floating level VFN, the ground of the NMOS drive buffer is connected with the VNN, and the input of the NMOS drive level shift module is connected with the output 2 of the non-overlapping clock generation module;
the operation process of the transceiver circuit is as follows;
since the voltage sources of the driving circuit are VPP and VNN respectively, the VPP is connected with the highest power supply of the driving circuit, and the VNN is connected with the negative power supply of the driving circuit, the transmitting/receiving point has positive and negative driving voltages relative to GND;
the CLK signal passes through the non-overlapping clock generating circuit and the PMOS level shifting circuit, and generates driving signals with high and low levels of VPP and VFP respectively in the transmitting stage, wherein the VFP is relatively lower than the VPP; when PDRV is VPP, MPHV1 is in a closed state; when the voltage of the PDRV is VFP, MPHV1 is in an on state;
CLK signal passes through non-overlapping clock generating circuit and NMOS level shift circuit, and generates driving signals with high and low level of VNN and VFN respectively in transmitting stage, wherein VFN is relatively higher than VNN; when the voltage of the NDRV is VNN, MNHV1 is in a closing state; when NDRV is VFN, MNHV1 is in an opening state;
in the transmitting phase, TX/RX is high, which means that the transceiver circuit is in the transmitting phase; the receiving circuit is driven to be in a closed state, MNHV2 and MNHV3 are in a closed state, MNTX is a pull-down NMOSFET device of the receiving circuit, MNTX is in an open state, and an input signal of the receiving circuit module is pulled down to RGND through MNTX;
in the receiving stage, TX/RX is low level, which means that the transceiver circuit is in the stage of receiving echo signals, the transmitting circuit part does not work, and the PMOSFET device MPHV1 and the NMOSFET device MNHV1 are in the closed state; MNTX is in a closed state, a receiving circuit is driven to be on, MNHV2 and MNHV3 are in an open state, and echo signals received at the HVOUT are transmitted to the receiving circuit through MNHV2 and MNHV3 to finish subsequent signal processing; the receiving circuit has a self-protection function and can clamp the received signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511036.0A CN114785374B (en) | 2022-05-11 | 2022-05-11 | Receiving and transmitting circuit applied to B ultrasonic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511036.0A CN114785374B (en) | 2022-05-11 | 2022-05-11 | Receiving and transmitting circuit applied to B ultrasonic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114785374A CN114785374A (en) | 2022-07-22 |
| CN114785374B true CN114785374B (en) | 2024-04-02 |
Family
ID=82437335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210511036.0A Active CN114785374B (en) | 2022-05-11 | 2022-05-11 | Receiving and transmitting circuit applied to B ultrasonic |
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| Country | Link |
|---|---|
| CN (1) | CN114785374B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004070780A2 (en) * | 2003-01-31 | 2004-08-19 | Power-One Limited | Transistor driver circuit |
| CN206080564U (en) * | 2016-07-19 | 2017-04-12 | 深圳市威尔德医疗电子有限公司 | Supersound transceiver circuits of B ultrasonic equipment |
| CN109846511A (en) * | 2019-01-30 | 2019-06-07 | 四川翊晟芯科信息技术有限公司 | A kind of portable wireless electronics B-mode instrument |
| CN110635669A (en) * | 2019-11-14 | 2019-12-31 | 南京大学 | High-voltage MOSFET switch driving and protecting circuit |
| CN113440168A (en) * | 2021-07-01 | 2021-09-28 | 成都川为生物医疗科技有限责任公司 | Voice broadcast B-type ultrasonic diagnostic apparatus based on image intelligent recognition |
| CN113972815A (en) * | 2020-07-24 | 2022-01-25 | 茂睿芯（深圳）科技有限公司 | Dual-channel gate drive circuit and dual-channel gate drive chip |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2792214A1 (en) * | 2011-12-16 | 2014-10-22 | Advanced Lighting Technologies, Inc. | Near unity power factor long life low cost led lamp retrofit system and method |
-
2022
- 2022-05-11 CN CN202210511036.0A patent/CN114785374B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004070780A2 (en) * | 2003-01-31 | 2004-08-19 | Power-One Limited | Transistor driver circuit |
| CN206080564U (en) * | 2016-07-19 | 2017-04-12 | 深圳市威尔德医疗电子有限公司 | Supersound transceiver circuits of B ultrasonic equipment |
| CN109846511A (en) * | 2019-01-30 | 2019-06-07 | 四川翊晟芯科信息技术有限公司 | A kind of portable wireless electronics B-mode instrument |
| CN110635669A (en) * | 2019-11-14 | 2019-12-31 | 南京大学 | High-voltage MOSFET switch driving and protecting circuit |
| CN113972815A (en) * | 2020-07-24 | 2022-01-25 | 茂睿芯（深圳）科技有限公司 | Dual-channel gate drive circuit and dual-channel gate drive chip |
| CN113440168A (en) * | 2021-07-01 | 2021-09-28 | 成都川为生物医疗科技有限责任公司 | Voice broadcast B-type ultrasonic diagnostic apparatus based on image intelligent recognition |
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| Publication number | Publication date |
|---|---|
| CN114785374A (en) | 2022-07-22 |
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