A kind of supersonic diagnostic set
Technical field
This utility model relates to a kind of medical ultrasound ripple diagnostic apparatus, is specifically related to a kind of improvement of supersonic diagnostic set circuit structure.
Background technology
At present the cable core number of supersonic diagnostic set is more, and along with the increase of array number, the cable core number also increases thereupon.For example: if need be with the cable of 130 multicores with the supersonic diagnostic set of 128 array elements, if array number increases, the cable core number also must increase, and the cost of diagnostic apparatus also can sharply increase like this.
Along with supersonic diagnostic set miniaturization day by day, in practice, in order to address the above problem, generally adopt probe module is set in diagnostic apparatus, as shown in Figure 1, the diagnostic apparatus of such 128 array elements only needs 44 cables core, and under the prerequisite that does not increase the cable core number, can insert 196 array elements, reduce the volume of supersonic diagnostic set.But owing to increased probe module on the supersonic diagnostic set, cable has been extended, crosstalking of line is serious, and the signal that is transmitted on the probe module can be jagged.When if the burr of probe module chips pin is higher than the burr of module self voltage, very easily damage the chip of probe module, probe module is damaged can not be used.
Thereby prior art is still waiting to improve and improve.
The utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of supersonic diagnostic set, can prevent that the chip of probe module in the diagnostic apparatus from damaging, and effectively protects the probe module of diagnostic apparatus.
In order to achieve the above object, this utility model has been taked following technical scheme:
A kind of supersonic diagnostic set; comprise probe transmitter module and probe module; the signal output part of probe transmitter module connects the signal input part of probe module; wherein; also comprise the limiter protection circuit module, described limiter protection circuit module is arranged on the signal transmission pathway of described probe transmitter module and probe module.
Described supersonic diagnostic set wherein, also comprises the overvoltage crowbar module; Described overvoltage crowbar module is arranged on the signal input part of described probe transmitter module.
Described supersonic diagnostic set, wherein, described limiter protection circuit module comprises: first diode and second diode; The negative pole end of described first diode is connected the signal output part of described probe transmitter module with the positive terminal of second diode, the negative pole end of the described first diode cathode end and second diode is connected dc source respectively.
Described supersonic diagnostic set, wherein, described overvoltage crowbar module comprises: the 3rd diode, the 4th diode, the 5th diode and the 6th diode; The positive terminal of described the 3rd diode connects the signal input part of described probe transmitter module, and the negative pole end of the 3rd diode connects dc source; The negative pole end of described the 4th diode connects the positive terminal of the 3rd diode, the positive terminal ground connection of the 4th diode; The negative pole end of described the 5th diode connects the signal input part of described probe transmitter module, and the positive terminal of the 5th diode connects dc source, and the positive terminal of the 6th diode connects the negative pole end of the 5th diode, the negative pole end ground connection of the 6th diode.
Described supersonic diagnostic set, wherein, the path of described probe transmitter module and the transmission of probe module signal comprises: any cable between described probe transmitter module and the probe module in the strands of electric cables, perhaps many cables.
The supersonic diagnostic set that this utility model provides; owing to adopted on the signal transmission pathway of probe transmitter module and probe module and inserted limiter protection circuit; effectively protected the probe module of diagnostic apparatus; make the excellent performance of diagnostic apparatus; prolong the service life of diagnostic apparatus probe module, and reduced cost.
Description of drawings
Fig. 1 is the structural representation of the present supersonic diagnostic set that adopts usually;
Fig. 2 is the structural representation of this utility model supersonic diagnostic set.
The specific embodiment
For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing and give an actual example this utility model is further described.
In order to reduce the burr that supersonic diagnostic set is transmitted into signal on the probe module; realization is to the protection of diagnostic apparatus probe module; supersonic diagnostic set provided by the utility model can adopt on the signal transmission pathway of diagnostic apparatus probe transmitter module and probe module and insert the holding circuit module.
As shown in Figure 2, the supersonic diagnostic set that provides of this utility model comprises probe transmitter module 100, probe module 200, limiter protection circuit module 300 and FPGA image processing module 600.Wherein, the signal input part of described probe transmitter module 100 connects described FPGA image processing module 600 by cable 503, and the signal output part of probe transmitter module 100 connects the signal input part of described probe module 200 by signal transmission pathway 501.Described limiter protection circuit module 300 is arranged on the signal transmission pathway 501 of described probe transmitter module and probe module.Described limiter protection circuit module 300 can effectively reduce the pulse that transmits of probe transmitter module 100, and promptly the signal to the receiving terminal of probe module carries out amplitude limiting processing, makes the chip of probe module not fragile.
Should be noted that; usually because what of array element probe module use; may influence between probe transmitter module and the probe module radical as the strands of electric cables of signal transmission pathway; so all carry out the amplitude limit effect for each road signal is transmitted; then the probe transmitter module here and the signal transmission pathway of probe module comprise: any cable between described probe transmitter module and the probe module in the strands of electric cables; perhaps many cables, promptly limiter protection circuit module 300 can be connected probe transmitter module 100 and transmits on one or more cable of outfan.
As shown in Figure 2, its holding circuit module of supersonic diagnostic set of providing of this utility model comprises a plurality of diodes.As: the limiter protection circuit module 300 of probe comprises two diodes, is respectively the first diode D1 and the second diode D2.The negative pole end of the described first diode D1 is connected the signal output part of described probe transmitter module with the positive terminal of second diode.The positive terminal of the first diode D1 connects dc power cathode (being the VH-among Fig. 2), and the negative pole end of the second diode D1 connects dc power anode (being the VH+ among Fig. 2).Described first diode and second diode are connected the signal output part of described probe transmitter module, can play the amplitude limit effect in circuit, and probe module chips pin can not occurred than the higher burr of probe module self voltage.Thereby the chip of protection probe module guarantees that probe module is not fragile.
In the present embodiment, the limiter protection circuit module of supersonic diagnostic set adopts the amplitude limiter circuit of Zener diode formation to serve as holding circuit.Zener diode is connected in the circuit in pairs, and the performance of paired two Zener diodes is in full accord, and Zener diode have simple in structure, the characteristics that cost is low.But this utility model never is limited to and only adopts Zener diode to serve as holding circuit, can also adopt other electronic devices and components that can play the amplitude limit effect, for example limiter diode.
In a further embodiment; as shown in Figure 2; in order to realize protection to the probe transmitter module; signal input part at probe transmitter module 100 has inserted the signal input part of overvoltage crowbar module 400. described overvoltage crowbar modules 400 by the described probe transmitter module 100 of cable 502 connections. and the overvoltage crowbar module can realize the power protection to the probe transmitter module; when the overtension of probe transmitter module input; can both in time adjust voltage, play the effect of timely protection.
In the present embodiment, the overvoltage crowbar module 400 of supersonic diagnostic set comprises four diodes, and as shown in Figure 2, four diodes are respectively the 3rd diode D3, the 4th diode D4, the 5th diode D5 and the 6th diode D6.The positive terminal of described the 3rd diode D3 connects the signal input part of described probe transmitter module 100, and the negative pole end of the 3rd diode D3 connects dc power anode (being the VH+ among Fig. 2).The negative pole end of described the 4th diode D4 connects the positive terminal of the 3rd diode D3, the positive terminal ground connection of the 4th diode D4.The negative pole end of described the 5th diode D5 connects the signal input part of described probe transmitter module 100, and the positive terminal of the 5th diode D5 connects dc power cathode (being the VH-among Fig. 2).The positive terminal of the 6th diode D6 connects the negative pole end of the 5th diode D5, the negative pole end ground connection of the 6th diode D6.
In the present embodiment; what the overvoltage crowbar module of supersonic diagnostic set adopted is 4 Zener diodes; described Zener diode is connected the signal input part of probe transmitter module 100; overtension when probe transmitter module input; can both in time adjust voltage, the transmitter module of guaranteeing to pop one's head in is not damaged.But this utility model never is limited to and only adopts Zener diode to serve as overvoltage crowbar, can also adopt other electronic devices and components that can play the overvoltage effect, for example discharge tube etc.
The supersonic diagnostic set that the utility model provides, after the probe signal input part of transmitter module and signal output part (being the input of probe module) insert respectively the holding circuit module, not only make the voltage stabilization of probe transmitter module input, protected the probe transmitter module; Also effectively reduce the pulse that the probe transmitter module transmits, namely the input at probe module carries out amplitude limiting processing, make probe module chips pin the burr higher than the voltage of module self can not occur, improved the performance of supersonic diagnostic set, prolonged the service life of ultrasonic diagnosis instrument probe, the characteristics such as it is little also to have simultaneously volume, and cost is low.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.