CN104624459A - Ultrasonic wave emitting circuit - Google Patents
Ultrasonic wave emitting circuit Download PDFInfo
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Abstract
The invention provides an ultrasonic wave emitting circuit and belongs to the application systems of ultrasonic probes with split receiving and transmitting and ultrasonic probes with integrated receiving and transmitting. The ultrasonic wave emitting circuit comprises a capacitor C1, a capacitor C2, 2n switch tubes (from the switch tube K1 to the switch tube K2n), n ultrasonic probes (from the ultrasonic probe JZ1 to the ultrasonic probe JZn), an electronic switch 1 selecting one from n and an electronic switch 2 selecting one from n, wherein n is a positive integer larger than or equal to 1. The circuit structurally comprises a capacitance bridge and n switch bridges. When the circuit emits ultrasonic wave outwards, only one switch bridge works at one moment, the two switch tubes in the switch bridge constitute a circuit structure with a push-pull output function, the switch tubes in the other switch bridge are switched off, a circuit structure with a high-resistance output function is formed, and the two electronic switches selecting one from n achieve selection of ultrasonic probes.
Description
Technical field
The present invention relates to a kind of ultrasonic transmit circuit, relate to the technical field that ultrasonic wave is launched.
Background technology
Ultrasonic transmit circuit is requisite part in ultrasonic applications system.
In traditional ultrasonic transmit circuit, ultrasonic wave emitting head is with an inductance in parallel mated or ultrasonic wave emitting head is connected to high frequency transformer, to realize impedance matching, obtain launching effect as well as possible, but different ultrasonic probes needs to mate different inductance values, poor universality, there is the shortcoming that volume is large, cost is high, power consumption is larger in inductance or transformer, so limit the raising of the cost performance of radiating circuit.
In the ultrasonic transmit circuit also had, the two ends of ultrasonic wave emitting head connect the inverter output of two anti-phase outputs respectively, being actually ultrasonic probe is connected between two push-pull output circuits being made up of four switching tubes, this scheme seems reasonable, but due to the internal resistance of power supply and the restriction of instantaneous power ability, the crest voltage that ultrasonic probe is obtained does not reach supply voltage, its pulse front edge is not steep, have impact on the emissivities of ultrasonic probe, inverter load is limited in one's ability, it is mainly used in the ultrasonic transmit circuit of faint energy transmitting, relative to the emitted energy of ultrasonic probe, the power consumption of phase inverter is very large, on pcb board, phase inverter and peripheral component thereof occupy larger space, be unfavorable for reducing circuit board volume.
Also have the ultrasonic transmit circuit of other kind, they otherwise the utilization rate of supply voltage is low, or launch hyperacoustic weak effect, and do not get the nod or generally apply.
Ultrasonic transmit circuit comprises the drive circuit driving ultrasonic probe, existing drive circuit can only drive a ultrasonic probe, multiple ultrasonic probe is needed in the ultrasonic applications system as radar for backing car, corresponding then need multiple drive circuit, so the complex structure of circuit, cost is high.
Summary of the invention
According to above the deficiencies in the prior art, the invention provides that a kind of efficiency is high, circuit structure is simple, highly versatile, the ultrasonic transmit circuit of one or more ultrasonic probe can be driven.
For achieving the above object, the technical solution adopted for the present invention to solve the technical problems is: a kind of ultrasonic transmit circuit, is applicable to receive and dispatch the ultrasonic probe of split and the ultrasonic probe application system of transmitting-receiving consubstantiality, comprises electric capacity C1, electric capacity C2, switching tube (K1 ~ K2n), ultrasonic probe (JZ1 ~ JZn), n selects an electronic switch 1 and n to select an electronic switch 2, wherein n be greater than and equal 1 positive integer, n selects an electronic switch 1 to comprise n electronic switch (SK11, SK12, SK13, SK1n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK11, SK12, SK13, SK1n) one end links together and forms the input that n selects an electronic switch 1, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n output of an electronic switch 1 as n, and n selects an electronic switch 2 to comprise n electronic switch (SK21, SK22, SK23, SK2n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK21, SK22, SK23, SK2n) one end links together and forms the output that n selects an electronic switch 2, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n input of an electronic switch 2 as n.
Electric capacity C1 and switching tube (K1, K3, K5, K2n-1) one end connects power Vcc, electric capacity C2 and switching tube (K2, K4, K6, K2n) one end ground connection (reference potential), the other end of electric capacity C1 is connected with the other end of electric capacity C2, its tie point is node A, and form a capacitance bridge, switching tube (K1, K3, K5, K2n-1) the other end respectively with switching tube (K2, K4, K6, K2n) the other end connects, its tie point is respectively node (B1, B2, B3, Bn), and form n switch bridge, namely each switch bridge comprises 2 switching tubes, one end connected node A of ultrasonic probe (JZ1 ~ JZn), ultrasonic probe (JZ1, JZ2, JZ3, JZn) the other end selects an electronic switch 1 be connected to Node B 1 or be directly connected to node (B1 respectively by n, B2, B3, Bn).
Wherein the capacitance of electric capacity (C1, C2) is much larger than the capacitance of ultrasonic probe (JZ1 ~ JZn), makes the current potential at node A place substantially constant.
The capacitance of electric capacity C1 equals the capacitance of electric capacity C1, i.e. C1=C2, and with the driving pulse voltage making ultrasonic probe (JZ1 ~ JZn) obtain Symmetrical, the current potential at node A place is 0.5Vcc.
For ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) one end be directly connected to node (B1, B2, B3 ..., Bn) ultrasonic transmit circuit, when outwards launching ultrasonic wave, the a certain moment only has the work of a switch bridge, and two switching tube compositions in this switch bridge recommend the circuit structure of output function, switching tube in other switch bridge all disconnects, form the circuit structure of high resistant output function, keep apart to make in running order ultrasonic probe and other ultrasonic probe.
One end for ultrasonic probe (JZ1 ~ JZn) only comprises a switch bridge by the ultrasonic transmit circuit that n selects an electronic switch 1 to be connected to Node B 1, this switch bridge comprises switching tube K1 and switching tube K2, Node B 1 connects the input that n selects an electronic switch 1, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n selects n output of an electronic switch 1 to connect ultrasonic probe (JZ1 respectively, JZ2, JZ3, JZn) the other end, to select corresponding ultrasonic probe in running order, during transmitting ultrasonic wave, switching tube K1 and switching tube K2 composition recommends the circuit structure of output function, to provide driving pulse.
When ultrasonic probe (JZ1 ~ JZn) is transmitting-receiving integrated probe, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 connect respectively ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, with the inverse signal enabling ultrasonic wave receiving circuit receive corresponding ultrasonic probe.
As n=1, described ultrasonic transmit circuit comprises switching tube (K1, K2), electric capacity (C1, C2) and ultrasonic probe JZ1, switching tube K1 and switching tube K2 forms a switch bridge, tie point between two switching tubes is Node B 1, electric capacity C1 and electric capacity C2 forms a capacitance bridge, tie point between two electric capacity is node A, the two ends connected node B1 and node A respectively of ultrasonic probe JZ1, circuit structure is simple, during transmitting ultrasonic wave, switching tube K1 and switching tube K2 composition recommends the circuit structure of output function, thinks that ultrasonic probe provides driving pulse; If when ultrasonic probe JZ1 is transmitting-receiving integrated probe, the input of ultrasonic wave receiving circuit is connected to Node B 1, and when receiving ultrasonic wave, switching tube K1 and switching tube K2 all disconnects, and forms the circuit structure of high resistant output function, is conducive to the reception of echo.
Use single-chip microcomputer can simplify radiating circuit further, ultrasonic probe (JZ1, JZ2, JZ3, JZn) one end connected node A, the other end connects the I/O mouth pin (I/O1 of single-chip microcomputer respectively, I/O2, I/O3, I/On), when outwards launching ultrasonic wave, described single-chip microcomputer corresponding I/O mouth pin (I/O1, I/O2, I/O3, I/On) one in works in and recommends output mode by force, drive pulse signal is exported by this port, corresponding ultrasonic probe is driven outwards to launch ultrasonic wave, and the I/O mouth pin of this single-chip microcomputer (I/O1, I/O2, I/O3, I/On) in, other I/O mouth pin works in high resistant output mode, when ultrasonic probe (JZ1 ~ JZn) is transmitting-receiving consubstantiality formula probe, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 connect respectively ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, when receiving ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 2, for signal provides path.
The beneficial effect that ultrasonic transmit circuit of the present invention has is: highly versatile, without the need to debugging; Multiple ultrasonic probe can be driven; The present invention uses element few, and circuit structure is simple, and cost is low; Adopt electronic switching technology, the loss of electric capacity is also few, and efficiency is high; Switching tube and electric capacity can by larger electric currents, and the load capacity of circuit is strong, and the scope be suitable for is wide; Electric capacity can provide the pulse current needed for ultrasonic probe, and the emissivities of ultrasonic probe are strong.
Accompanying drawing explanation
Figure 1 shows that only have a ultrasonic probe and this probe be transmitting-receiving split ultrasonic transmit circuit;
Figure 2 shows that the equivalent circuit of Fig. 1;
Figure 3 shows that terminal voltage oscillogram when ultrasonic probe JZ1 works in Fig. 1 and Fig. 2;
Figure 4 shows that only has a ultrasonic probe and this probe is the ultrasonic transmit circuit of transmitting-receiving consubstantiality formula;
Figure 5 shows that to there is n switch bridge and n ultrasonic probe and the ultrasonic probe ultrasonic transmit circuit embodiment that to be transmitting-receiving split type;
Figure 6 shows that n switch bridge and n ultrasonic probe and ultrasonic probe is the ultrasonic transmit circuit embodiment of transmitting-receiving consubstantiality formula;
Figure 7 shows that the ultrasonic transmit circuit embodiment only having a switch bridge;
Figure 8 shows that one of practical application embodiment of the present invention;
Figure 9 shows that practical application embodiment two of the present invention;
Wherein: K1, K2, K3 ..., K2n, switching tube C1, C2, electric capacity JZ1, JZ2, JZ3 ..., JZn, ultrasonic probe R, the energy ezpenditure equivalent resistance L of ultrasonic probe, the series resonant tank equivalent inductance C of ultrasonic probe, the series resonant tank equivalent capacity C0 of ultrasonic probe, the parallel equivalent electric capacity of ultrasonic probe.
Detailed description of the invention
Be described further below in conjunction with the detailed description of the invention of accompanying drawing to the technical scheme of ultrasonic transmit circuit of the present invention.
A kind of ultrasonic transmit circuit, is applicable to receive and dispatch the ultrasonic probe of split and the ultrasonic probe application system of transmitting-receiving consubstantiality.
As shown in Figures 1 and 2, electric capacity C1 is connected power Vcc with one end of electronic switch K1, one end ground connection (reference potential) of electric capacity C2 and electronic switch K2, the other end of electric capacity C1 is connected with the other end of electric capacity C2, its tie point is node A, the other end of electronic switch K1 is connected with the other end of electronic switch K2, and its tie point is Node B 1, two ends connected node A and the Node B 1 respectively of ultrasonic probe JZ1.
Physical presence two electric bridges in this circuit: electric capacity C1 is connected with electric capacity C2 and defines a capacitance bridge, switching tube K1 is connected with switching tube K2 and defines a switch bridge.
The current potential at application claims node A place is substantially constant at work, so the capacitance of electric capacity (C1, C2) is much larger than the capacitance of ultrasonic probe JZ1.
Make ultrasonic probe JZ1 obtain the driving pulse of Symmetrical, then the capacitance of electric capacity C1 equals the capacitance of electric capacity C2, i.e. C1=C2, so the current potential at node A place is 0.5Vcc.
When launching ultrasonic wave, switching tube K1 and switching tube K2 forms the circuit structure of recommending output function, launches ultrasonic wave to provide the pulse voltage of Symmetrical to ultrasonic probe JZ1.
Attached terminal voltage oscillogram when Figure 3 shows that ultrasonic probe JZ1 in Fig. 1 and Fig. 2 works, wherein longitudinal axis V is the terminal voltage of ultrasonic probe JZ1 when working, its reference direction be the current potential of Node B 1 higher than node A, transverse axis t is the time.
Suppose to be in conducting and off-state respectively at t0 moment switching tube K1 and switching tube K2, and the terminal voltage of ultrasonic probe enters stable state, its value is 0.5Vcc.
In the t1 moment, switching tube K1 disconnects and switching tube K2 conducting, then ultrasonic probe JZ1 is in parallel with electric capacity C2, ultrasonic probe JZ1 is immediately by electric capacity C2 reverse charging, ultrasonic probe JZ1 outwards launches ultrasonic wave immediately, in addition the current potential at node A place maintains 0.5Vcc substantially, the terminal voltage steady-state value of its ultrasonic probe JZ1 is-0.5Vcc, because the internal resistance of electric capacity is little, its electric current can suddenly change, so the terminal voltage waveform forward position of ultrasonic probe JZ1 is very steep, make the emissivities of ultrasonic probe JZ1 very strong.
In the t2 moment, switching tube K1 conducting and switching tube K2 disconnect, then ultrasonic probe JZ1 is in parallel with electric capacity C1, ultrasonic probe JZ1 is immediately by electric capacity C1 reverse charging, ultrasonic probe JZ1 outwards launches ultrasonic wave immediately, in addition the current potential at node A place maintains 0.5Vcc substantially, the terminal voltage steady-state value of its ultrasonic probe JZ1 is 0.5Vcc, because the internal resistance of electric capacity is little, its electric current can suddenly change, so the terminal voltage waveform forward position of ultrasonic probe JZ1 is very steep too, make the emissivities of ultrasonic probe JZ1 also very strong.
Ultrasonic probe JZ1 passes through in the process of electric capacity C or electric capacity C2 reverse charging, due to the impact of its equivalent inductance L and circuit distributed constant, certain overshoot voltage Vm is there will be on the terminal voltage steady-state value of ultrasonic probe JZ1, be the ultrasonic probe of 40KHz for diameter 10mm ~ 16mm intrinsic frequency, as voltage Vcc=9V, the absolute value of overshoot voltage Vm is about 1V, and this overshoot voltage is conducive to the emitted energy increasing ultrasonic probe.
Figure 4 shows that only has a ultrasonic probe and this probe is the ultrasonic transmit circuit of transmitting-receiving consubstantiality formula, ultrasonic probe JZ1 is the ultrasonic probe of transmitting-receiving consubstantiality formula, wherein ultrasonic probe JZ1, switching tube (K1, K2) are identical with accompanying drawing 1 with the annexation of electric capacity (C1, C2), and the Node B 1 in the input connecting valve bridge of ultrasonic wave receiving circuit, when outwards launching ultrasonic wave, two switching tube (K1, K2) compositions in switch bridge recommend the circuit structure of output function, make ultrasonic probe JZ1 obtain driving pulse and outwards launch ultrasonic wave; When receiving ultrasonic echo signal, two switching tubes (K1, K2) in switch bridge all disconnect, form the circuit structure of high resistant output function, hold and earth terminal with the Vcc of insulating power supply, echo-signal can not be shorted, in alternating current path, the in parallel and short circuit grounding of electric capacity C1 and electric capacity C2, so meet the condition that ultrasonic probe receives echo-signal, actual measurement shows to receive well.
The present invention can realize to n (wherein n be greater than and equal 1 positive integer) driving of ultrasonic probe.
As shown in Figure 5, this ultrasonic transmit circuit comprises electric capacity C1, electric capacity C2, switching tube (K1 ~ K2n), ultrasonic probe (JZ1 ~ JZn), electric capacity C1 and switching tube (K1, K3, K5, K2n-1) one end connects power Vcc, electric capacity C2 and switching tube (K2, K4, K6, K2n) one end ground connection (reference potential), the other end of electric capacity C1 is connected with the other end of electric capacity C2, its tie point is node A, and form a capacitance bridge, switching tube (K1, K3, K5, K2n-1) the other end respectively with switching tube (K2, K4, K6, K2n) the other end connects, its tie point is respectively node (B1, B2, B3, Bn), and form n switch bridge, namely each switch bridge comprises 2 switching tubes, one end connected node A of ultrasonic probe (JZ1 ~ JZn), ultrasonic probe (JZ1, JZ2, JZ3, JZn) the other end is connected respectively to node (B1, B2, B3, Bn).
When outwards launching ultrasonic wave, the a certain moment only has the work of a switch bridge, and two switching tube compositions in this switch bridge recommend the circuit structure of output function, switching tube in other switch bridge all disconnects, form the circuit structure of high resistant output function, keep apart to make in running order ultrasonic probe and other ultrasonic probe.
The basis of accompanying drawing 5 increases a n and selects an electronic switch 2, and ultrasonic probe (JZ1 ~ JZn) is set to transmitting-receiving consubstantiality formula, then define transmitting-receiving consubstantiality formula ultrasonic circuit, as shown in Figure 6, n selects an electronic switch 2 to comprise n electronic switch (SK21, SK22, SK23, SK2n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK21, SK22, SK23, SK2n) one end links together and forms the output that n selects an electronic switch 2, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n input of an electronic switch 2 as n, and one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 to connect ultrasonic probe (JZ1 respectively, JZ2, JZ3, JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, and when receiving ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 2, for signal provides path.
Attachedly Figure 7 shows that one embodiment of the present of invention, it also comprises a n and selects an electronic switch 1, n to select an electronic switch 1 to comprise n electronic switch (SK11, SK12, SK13, SK1n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK11, SK12, SK13, SK1n) one end links together and forms the input that n selects an electronic switch 1, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n output of an electronic switch 1 as n, embodiment shown in accompanying drawing 7 only comprises a switch bridge, this switch bridge comprises switching tube K1 and switching tube K2, Node B 1 connects the input that n selects an electronic switch 1, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n output of an electronic switch 1 to connect ultrasonic probe (JZ1 respectively, JZ2, JZ3, JZn) the other end, when launching ultrasonic wave, switching tube K1 and switching tube K2 composition recommends the circuit structure of output function, and when launching ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 1, for drive pulse signal provides path.
Ultrasonic transmit circuit of the present invention obtains good effect in actual applications, wherein be illustrated for the embodiment shown in accompanying drawing 8, this figure is actually and achieves attached function embodiment illustrated in fig. 5, circuit shown in its equivalent circuit with accompanying drawing 5 is identical, and it comprises a single-chip microcomputer, n ultrasonic probe (JZ1 ~ JZn) and 2 electric capacity (C1, C2), electric capacity C1 and electric capacity C2 forms a capacitance bridge, ultrasonic probe (JZ1, JZ2, JZ3, JZn) one end connects the node A in capacitance bridge, ultrasonic probe (JZ1, JZ2, JZ3, JZn) the other end connects the I/O mouth pin (I/O1 of single-chip microcomputer respectively, I/O2, I/O3, I/On), the I/O mouth pin (I/O1 of wherein single-chip microcomputer, I/O2, I/O3, I/On) have and recommend by force output and high resistant output function, present single-chip microcomputer has this function substantially, when outwards launching ultrasonic wave, and described single-chip microcomputer corresponding I/O mouth pin (I/O1, I/O2, I/O3, I/On) one in works in and recommends output mode by force, exports drive pulse signal, drive corresponding ultrasonic probe outwards to launch ultrasonic wave by this port, and the I/O mouth pin of this single-chip microcomputer (I/O1, I/O2, I/O3, I/On) in, other I/O mouth pin works in high resistant output mode.
In fig .9, ultrasonic probe (JZ1 ~ JZn) is transmitting-receiving consubstantiality formula probe, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 connect respectively ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, when receiving ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 2, for signal provides path.
As can be seen from the practical application example shown in accompanying drawing 8 and accompanying drawing 9, circuit structure of the present invention is simple, and cost is low, and loss is few, highly versatile, can realize the driving to multiple ultrasonic probe, has outstanding substantive distinguishing features and significant progress.
Certainly, when not departing from framework of the present invention, can also there be other selection and development and we can pre-conceivable equivalent device.
Claims (10)
1. a ultrasonic transmit circuit, is applicable to receive and dispatch the ultrasonic probe of split and the ultrasonic probe application system of transmitting-receiving consubstantiality, comprises electric capacity C1, electric capacity C2, switching tube (K1 ~ K2n), ultrasonic probe (JZ1 ~ JZn), n selects an electronic switch 1 and n to select an electronic switch 2, and wherein the function of switching tube (K1 ~ K2n) can be existing by the I/O cause for gossip of semiconductor switch pipe or single-chip microcomputer, n be greater than and equal 1 positive integer, n selects an electronic switch 1 to comprise n electronic switch (SK11, SK12, SK13, SK1n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK11, SK12, SK13, SK1n) one end links together and forms the input that n selects an electronic switch 1, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n output of an electronic switch 1 as n, and n selects an electronic switch 2 to comprise n electronic switch (SK21, SK22, SK23, SK2n), a certain moment only has one of them electronic switch conducting, wherein electronic switch (SK21, SK22, SK23, SK2n) one end links together and forms the output that n selects an electronic switch 2, electronic switch (SK11, SK12, SK13, SK1n) the other end selects n input of an electronic switch 2 as n, it is characterized in that: electric capacity C1 and switching tube (K1, K3, K5, K2n-1) one end connects power Vcc, electric capacity C2 and switching tube (K2, K4, K6, K2n) one end ground connection (reference potential), the other end of electric capacity C1 is connected with the other end of electric capacity C2, and its tie point is node A, and forms a capacitance bridge, switching tube (K1, K3, K5, K2n-1) the other end respectively with switching tube (K2, K4, K6, K2n) the other end connects, and its tie point is respectively node (B1, B2, B3, Bn), and form n switch bridge, namely each switch bridge comprises 2 switching tubes, one end connected node A of ultrasonic probe (JZ1 ~ JZn), ultrasonic probe (JZ1, JZ2, JZ3, JZn) the other end selects an electronic switch 1 be connected to Node B 1 or be directly connected to node (B1 respectively by n, B2, B3, Bn).
2. ultrasonic transmit circuit according to claim 1, is characterized in that: the capacitance of described electric capacity (C1, C2) is much larger than the capacitance of ultrasonic probe (JZ1 ~ JZn).
3. ultrasonic transmit circuit according to claim 2, is characterized in that: the capacitance of electric capacity C1 equals the capacitance of electric capacity C2, i.e. C1=C2.
4. ultrasonic transmit circuit according to claim 1, it is characterized in that: for ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) one end be directly connected to node (B1, B2, B3 ..., Bn) ultrasonic transmit circuit, when outwards launching ultrasonic wave, the a certain moment only has the work of a switch bridge, and two switching tube compositions in this switch bridge recommend the circuit structure of output function, switching tube in other switch bridge all disconnects, and forms the circuit structure of high resistant output function.
5. ultrasonic transmit circuit according to claim 1, it is characterized in that: the one end for ultrasonic probe (JZ1 ~ JZn) only comprises a switch bridge by the ultrasonic transmit circuit that n selects an electronic switch 1 to be connected to Node B 1, this switch bridge comprises switching tube K1 and switching tube K2, Node B 1 connects the input that n selects an electronic switch 1, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n selects n output of an electronic switch 1 to connect ultrasonic probe (JZ1 respectively, JZ2, JZ3, JZn) the other end, when launching ultrasonic wave, switching tube K1 and switching tube K2 composition recommends the circuit structure of output function, when launching ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 1, for drive pulse signal provides path.
6. the ultrasonic transmit circuit according to arbitrary requirement of claim 1,2,3,4,5, it is characterized in that: when ultrasonic probe (JZ1 ~ JZn) is transmitting-receiving consubstantiality formula probe, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 connect respectively ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, when receiving ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 2, for signal provides path.
7. ultrasonic transmit circuit according to claim 1, it is characterized in that: as n=1, described ultrasonic transmit circuit comprises switching tube (K1, K2), electric capacity (C1, and ultrasonic probe JZ1 C2), switching tube K1 and switching tube K2 forms a switch bridge, tie point between two switching tubes is Node B 1, electric capacity C1 and electric capacity C2 forms a capacitance bridge, tie point between two electric capacity is node A, the two ends connected node B1 and node A respectively of ultrasonic probe JZ1, when launching ultrasonic wave, switching tube K1 and switching tube K2 composition recommends the circuit structure of output function.
8. ultrasonic transmit circuit according to claim 7, it is characterized in that: when ultrasonic probe JZ1 is transmitting-receiving integrated probe, the input of ultrasonic wave receiving circuit is connected to Node B 1, when receiving ultrasonic wave, switching tube K1 and switching tube K2 all disconnects, and forms the circuit structure of high resistant output function.
9. ultrasonic transmit circuit according to claim 1, it is characterized in that: ultrasonic probe (JZ1, JZ2, JZ3, JZn) one end connected node A, the other end connects the I/O mouth pin (I/O1 of single-chip microcomputer respectively, I/O2, I/O3, I/On), when outwards launching ultrasonic wave, described single-chip microcomputer corresponding I/O mouth pin (I/O1, I/O2, I/O3, I/On) one in works in and recommends output mode by force, drive pulse signal is exported by this port, corresponding ultrasonic probe is driven outwards to launch ultrasonic wave, and the I/O mouth pin of this single-chip microcomputer (I/O1, I/O2, I/O3, I/On) in, other I/O mouth pin works in high resistant output mode.
10. ultrasonic transmit circuit according to claim 9, it is characterized in that: when ultrasonic probe (JZ1 ~ JZn) is transmitting-receiving consubstantiality formula probe, one end connected node A of ultrasonic probe (JZ1 ~ JZn), n select n input of an electronic switch 2 connect respectively ultrasonic probe (JZ1, JZ2, JZ3 ..., JZn) the other end, n selects 1 output of an electronic switch 2 to be connected to ultrasonic wave receiving circuit, when receiving ultrasonic wave, n selects corresponding electronic switch conducting in an electronic switch 2, for signal provides path.
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| CN201510012880.9A CN104624459B (en) | 2015-01-10 | 2015-01-10 | Ultrasonic wave transmitting circuit |
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| CN201510012880.9A CN104624459B (en) | 2015-01-10 | 2015-01-10 | Ultrasonic wave transmitting circuit |
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| CN104624459B CN104624459B (en) | 2017-06-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107518916A (en) * | 2017-06-26 | 2017-12-29 | Tcl医疗超声技术（无锡）有限公司 | A kind of ultrasonic wave transmitting circuit for medical ultrasonic diagnostic |
| US10808526B2 (en) | 2018-10-16 | 2020-10-20 | Halliburton Energy Services, Inc. | Transmitter and receiver interface for downhole logging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107518916A (en) * | 2017-06-26 | 2017-12-29 | Tcl医疗超声技术（无锡）有限公司 | A kind of ultrasonic wave transmitting circuit for medical ultrasonic diagnostic |
| US10808526B2 (en) | 2018-10-16 | 2020-10-20 | Halliburton Energy Services, Inc. | Transmitter and receiver interface for downhole logging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104624459B (en) | 2017-06-16 |
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