A kind of ultrasonic bone density instrument probe positions monitoring system and its monitoring methodTechnical field
The present invention relates to supersonic sounding technical field more particularly to a kind of ultrasonic bone density instrument probe positions monitoring system andIts monitoring method.
Background technique
Radius (shin bone) ultrasonic bone density instrument is that the medical diagnosis of currently used measurement human bone mineral density (bone strength) is setIt is standby.The equipment is by measuring the velocity of sound parallel across radius (or shin bone), to calculate and assess human body bone conditions.It should usingDuring ultrasonic bone density instrument measures bone density, guarantees that probe acoustic beam is parallel with tested position bone, be to obtain standardThe key of exact figures evidence.
In order to guarantee that the depth of parallelism of probe acoustic beam and bone, currently used method are using two groups of ultrasonic reception signal wavesShape is compared differentiation, and calculates depth of parallelism parameter, when two waveforms are overlapped consistent (or the depth of parallelism close to 0), it is believed that visitHead position has reached depth of parallelism requirement；When probe tip face and bone direction are almost the same, i.e., parallelism error is in a certain rangeInterior, the accuracy of measurement data is considered acceptable, and when parallelism error is larger, measurement data is not adopted.
This waveform sum number factually when the expression way that is displayed on the screen, need operator to observe ultrasonic reception wave in real timeWhether shape or depth of parallelism data, artificial judgment probe have been adjusted to optimum position and make adjustment in time, look for similar to blind.Often because of the reaction of operator or the time delay of judgement, probe positions are excessively adjusted, are difficult to probe positions when shorterIt is interior to harmonize in place, to affect testing efficiency and accuracy.Judge ultrasonic waveform curve and read depth of parallelism data, to behaviourThe specialty background and experience of author also has higher requirement.
Summary of the invention
In view of the above-mentioned problems, the present invention is intended to provide a kind of ultrasonic bone density instrument probe positions monitoring system and its monitoring sideMethod can adjust the position of probe according to monitoring result real-time display, improve the accuracy and detection effect of ultrasonic bone density instrumentRate.
Technical solution provided by the invention is as follows:
A kind of ultrasonic bone density instrument probe positions monitor system, comprising: ultrasonic wave transmitting module, ultrasonic wave receiving module,Determination module and display module, wherein
The ultrasonic wave transmitting module positioned at the ultrasonic bone density instrument hardware circuit and is connected on probe, and being used for willUltrasonic signal is emitted to tested bone surface；
The ultrasonic wave receiving module positioned at the ultrasonic bone density instrument hardware circuit and is connected on probe and describedThe energy converter of the energy converter of ultrasonic wave receiving module and the ultrasonic wave transmitting module is located in same level, the ultrasonic waveReceiving module is used to receive the ultrasonic signal of the tested bone surface reflection；
The determination module is connect with the ultrasonic wave receiving module, and the determination module receives the ultrasonic wave and receivesThe ultrasonic signal that module receives screens the ultrasonic signal received according to preset condition, with thisJudge whether the ultrasonic signal received meets bone density detection condition；
The display module is connect with the determination module, and the display module is for showing sentencing for the determination moduleDetermine the relative positional relationship of result and the ultrasonic bone density instrument probe and tested bone.
It is further preferred that include at least two transmitting units in the ultrasonic wave transmitting module, at least two hairThe energy converter for penetrating unit is located in same level, and the energy converter of each transmitting unit is in same angular on the horizontal planeDegree setting；
It include at least two receiving units, the energy converter of at least two receiving unit in the ultrasonic wave receiving moduleIn same level, and each receiving unit is arranged on the horizontal plane in equal angular.
It is further preferred that the preset condition include: the ultrasonic signal that receives of the ultrasonic wave receiving module itBetween crest value, valley value and wave crest/trough where discrepancy threshold between time point.
It is further preferred that further include in the monitoring system one respectively with the ultrasonic wave receiving module and determination moduleThe signal acquisition module of connection, the signal acquisition module are adopted based on the ultrasonic signal that the ultrasonic wave receiving module receivesCollect ultrasonic sampled signal, and the ultrasonic sampled signal is sent to the determination module；The determination module is according to default itemPart screens the ultrasonic sampled signal, judges whether the ultrasonic signal received meets bone density detection item with thisPart.
It is further preferred that further including that the sampling length that connect with the signal acquisition module is true in the monitoring systemCover half block, the sampling length determining module are maximum according to the ultrasonic sampled signal medium wave peak value that the signal acquisition module acquiresPoint determines the length of the ultrasonic sampled signal.
It include following the present invention also provides a kind of ultrasonic bone density instrument probe positions monitoring method, in the monitoring methodStep:
S1 emits ultrasonic signal to tested bone surface；
S2 receives the ultrasonic signal of the tested bone surface reflection；
S3 screens the ultrasonic signal received in step S2 according to preset condition, judges to receive with thisUltrasonic signal whether meet bone density detection condition；
S4 shows the opposite position of judgement result and display ultrasonic bone density the instrument probe and tested bone in step S4Set relationship.
It is further preferred that being specifically included in step S1: transmitting at least two beam ultrasonic signals to tested bone surface；
It is specifically included in step S2: receiving the ultrasonic signal of tested bone surface reflection described at least two beams.
It is further preferred that the preset condition include: the ultrasonic signal that receives of the ultrasonic wave receiving module itBetween crest value, valley value and wave crest/trough where discrepancy threshold between time point.
It is further preferred that after the step S2 further include:
S21 acquires ultrasonic sampled signal based on the ultrasonic signal received；
Include: in step S3
The ultrasonic sampled signal collected in step S21 is screened according to preset condition, judges to receive with thisTo ultrasonic signal whether meet bone density detection condition.
It is further preferred that in the step S4 further include:
The probe of ultrasonic bone density instrument described in real-time display and the parallel angle value and positional relationship between tested bone, and provideCorresponding prompt.
Ultrasonic bone density instrument probe positions monitoring system and its monitoring method provided by the invention, can bring following beneficialEffect:
In the present invention, the relative position by popping one's head between tested bone in display module real-time display measurement processRelationship, so that the position to probe indicates, operator no longer needs to understand ultrasonic signal waveform and parallel degree evidenceMeaning reduces the requirement to operator, intuitively observes probe positions in real time convenient for operator；
In addition, in the present invention, will be closed in the relative position in display module between real-time display probe and tested boneWhether system meets the requirements, and facilitates operator and quickly adjusts probe positions, to improve detection efficiency and acquire the accurate of dataProperty；The visual experience of user is substantially improved simultaneously.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic, technical characteristic,Advantage and its implementation are further described.
Fig. 1 is that ultrasonic bone density instrument probe positions monitor a kind of embodiment structure schematic diagram of system in the present invention；
Transmitting and reception relationship when Fig. 2 is includes two transmitting units and two receiving units in monitoring system in the present inventionStructural schematic diagram；
Fig. 3 is that ultrasonic bone density instrument probe positions monitor system another embodiment structural schematic diagram in the present invention；
Fig. 4 is that ultrasonic bone density instrument probe positions monitor system another embodiment structural schematic diagram in the present invention；
Fig. 5 is ultrasonic bone density instrument probe positions monitoring method flow diagram in the present invention；
Appended drawing reference:
100- ultrasonic bone density instrument probe positions monitor system, 110- ultrasonic wave transmitting module, and 120- ultrasonic wave receives mouldBlock, 130- determination module, 140- display module, 150- signal acquisition module, 160- sampling length determining module, 101- ultrasound boneDensitometer probe.
Specific embodiment
A kind of embodiment of system 100 is monitored as shown in Figure 1 for ultrasonic bone density instrument probe positions provided by the inventionStructural schematic diagram, it can be seen from the figure that including: ultrasonic wave transmitting module 110, ultrasonic wave reception in the monitoring system 100Module 120, determination module 130 and display module 140, wherein the energy converter and ultrasonic wave of ultrasonic wave transmitting module 110 receiveThe energy converter of module 120 is all located on ultrasonic bone density instrument probe, and is located in same level；Determination module 130 and ultrasoundWave receiving module 120 connects, and display module 140 is connect with determination module 130.
During the work time, the ultrasonic bone density instrument pops one's head in ultrasonic signal being emitted to tested bone surface first；ItAfterwards, ultrasonic wave receiving module 120 receives the ultrasonic signal of tested bone surface reflection and sends out the ultrasonic signal receivedIt is sent in determination module 130；After determination module 130 receives the ultrasonic signal that ultrasonic wave receiving module 120 sends over,It compares with the ultrasonic signal that will be received, the ultrasonic signal received is carried out between each other according to preset conditionScreening judges whether the ultrasonic signal received meets bone density detection condition with this；Finally, the display of display module 140 is sentencedThe judging result of cover half block 130 and the relative position information of display ultrasonic bone density instrument probe and tested bone.
It specifically, in the present embodiment, include at least two transmitting units in ultrasonic wave transmitting module 110, this is extremelyFew two transmitting units are located in same level, and each transmitting unit is arranged on the horizontal plane in equal angular；UltrasoundIt include at least two receiving units in wave receiving module 120, which is located in same level, and eachReceiving unit is arranged on the horizontal plane in equal angular, to guarantee in the case where popping one's head in parallel with tested bone, difference hairIt penetrates the distance that the ultrasonic signal that unit emits is irradiated on tested bone to be consistent, reflect back into from tested boneThe distance of each receiving unit is also consistent, in this way, surveying using the ultrasonic bone density instrument to the density of tested boneWhen examination, the ultrasonic signal that can be received according to receiving unit judges the depth of parallelism between probe and tested bone.
More specifically, above-mentioned preset condition specifically includes: the ultrasonic wave that the ultrasonic wave receiving module 120 receivesDiscrepancy threshold between time point where crest value, valley value and wave crest/trough between signal；By choosing in waveformThese characteristic points compare the difference between this two groups of ultrasonic signal characteristic points, in general, by comparing wave where peak valueStarting point judged.Here why will screen the ultrasonic signal received, it is therefore an objective to receivingUltrasonic signal carry out a preliminary judgement said if the characteristic value difference between the ultrasonic signal received is especially bigBright error in operation or ultrasonic bone density instrument break down, therefore need to reacquire one group of ultrasonic signal.
In a specific embodiment, as shown in Fig. 2, including two transmitting units (diagram in ultrasonic wave transmitting module 110Middle transmitting unit a1 and transmitting unit a2), it include two receiving units (receiving unit in diagram in ultrasonic wave receiving module 120B1 and receiving unit b2), and two transmitting units, two receiving units are in same level, two transmitting units are in phaseIt is arranged with angle, two receiving units are equally in equal angular setting.When two receiving units are respectively received one group of ultrasonic waveAfter signal, the ultrasonic signal received is sent to determination module 130 respectively immediately；Determination module 130 is with will be two groupsUltrasonic signal is compared, and judges whether the ultrasonic signal received can satisfy preset condition, can if judgingMeet, if judging, receive two groups of ultrasonic signals are not able to satisfy preset condition, sound an alarm and prompt userIt reuses ultrasonic wave transmitting module 110 and ultrasonic wave receiving module 120 carries out the transmitting-receiving operation of ultrasonic signal；If judgingTwo groups of ultrasonic signals to receive can satisfy preset condition, then is shown in display module 140.
Specifically, due to being equidistant between energy converter in popping one's head in, therefore, when probe is not parallel with tested bone, connectThe distance that the corresponding waveform of the two groups of ultrasonic signals received passes through there is difference, can be according to trigonometric function relationship with thisCalculate probe tested bone between angle, and mapping algorithm in the form of animation on display module 140 intuitivelyWhether the real-time relative position between display probe and tested bone meets the requirements, specifically, the refreshing shown in display module 140Speed can be configured according to real-time display effect.More specifically, the result that determination module 130 judges can be by showingWhether the color of intention or neighbouring text prompt probe positions (angle) in the normal range (NR) of setting in display module 140；Or when probe positions are more than setting value, warning note.
Above embodiment is improved, present embodiment is obtained, as shown in figure 3, provide in the present embodimentUltrasonic bone density instrument probe positions are monitored in addition to including the modules in above embodiment in system 100, further include differenceThe signal acquisition module 150 connecting with ultrasonic wave receiving module 120 and determination module 130, signal acquisition module 150 are based on ultrasoundThe ultrasonic signal that wave receiving module 120 receives acquires ultrasonic sampled signal, and ultrasonic sampled signal is sent to judgement mouldBlock 130；Determination module 130 screens ultrasonic sampled signal according to preset condition, judges that the ultrasonic wave received is believed with thisNumber whether meet bone density detection condition.Above embodiment is improved, present embodiment is obtained, as shown in figure 4, at thisIn addition to including each mould in above embodiment in the ultrasonic bone density instrument probe positions monitoring system 100 that embodiment providesBlock further includes a sampling length determining module 160 connecting with signal acquisition module 150,160 basis of sampling length determining moduleThe ultrasonic sampled signal medium wave peak value maximum point that signal acquisition module 150 acquires determines the length of ultrasonic sampled signal.
In a full implementation, ultrasonic wave transmitting module 110 passes through multiple transmitting lists in excitation ultrasonic probeMember makes the ultrasonic signal of transmitting unit transmitting certain frequency；Ultrasonic wave receiving module 120 passes through multiple reception lists in probeMember, received ultrasonic signal, and transfer data to determination module 130.In determination module 130, the ultrasonic wave received is believedIt number is compared to identify the ultrasonic waveform received, automatic screening obtains after meeting the ultrasonic wave waveform of preset condition and probeDifference characteristic between parallel angle waveform correlation re-starts ultrasonic wave transmitting module if waveform does not meet preset conditionThe ultrasound signal receipt step of 110 ultrasonic signal transmitting and ultrasonic wave receiving module 120.
More specifically, signal acquisition module 150 is opened from the transmitting ultrasonic signal moment of ultrasonic wave transmitting module 110 firstBegin one section of acquisition ultrasonic sampled signal, and the length of this section of ultrasonic sampled signal should occur according to this segment data crest value maximum valuePosition judge, generally twice or so of maximum value time of occurrence.Then, by adjusting the gain of hardware amplifying circuitThe ultrasonic signal received is amplified to the 80-85% of full scale, where maximizing and its neighbouring minimum value by valuePoint, and record its index value.When the maximum value index difference of two-way received wave indexes difference phase with the minimum value near maximum valueWhens equal, this difference is exactly probe and the parallel angle value between tested bone；Finally again by mapping algorithm, in display moduleThe real-time relative position between probe and bone is intuitively shown on 140 (screens).
As shown in figure 5, being applied to above-mentioned inspection the present invention also provides a kind of ultrasonic bone density instrument probe positions monitoring methodExamining system, comprising the following steps:
S1 emits ultrasonic signal to tested bone surface；
S2 receives the ultrasonic signal of tested bone surface reflection；
S3 screens the ultrasonic signal received in step S2 according to preset condition, judges to receive with this superWhether acoustic signals meet bone density detection condition；
S4 shows the relative position pass of judgement result and display ultrasonic bone density instrument probe and tested bone in step S4System.
Specifically, it specifically includes in step sl: transmitting at least two beam ultrasonic signals to tested bone surface；Then existIt is specifically included in step S2: receiving the ultrasonic signal of the tested bone surface reflection of at least two beams.That is, including at least in probeUltrasonic signal is emitted in tested bone by two transmitting units and at least two receiving units, receiving unit, ultrasonic wave letterIt number is received after tested skeletal reflex by corresponding receiving unit.Preset condition in step s3 specifically includes: the ultrasoundBetween time point where the crest value between ultrasonic signal, valley value and the wave crest that wave receiving module 120 receives/troughDiscrepancy threshold；The difference between this two groups of ultrasonic signal characteristic points is compared by choosing these characteristic points in waveform,In general, judged by comparing the starting point of wave where peak value.
Upon step s 2 further include: S21 acquires ultrasonic sampled signal based on the ultrasonic signal received；In stepInclude: to be screened according to preset condition to the ultrasonic sampled signal collected in step S21 in rapid S3, judges to connect with thisWhether the ultrasonic signal received meets bone density detection condition.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferredEmbodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the inventionUnder, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.