CN208678072U - A kind of pipeline liquid level ultrasound alarm - Google Patents

Abstract

The utility model discloses a kind of pipeline liquid level ultrasound alarms.The utility model uses the wall outer surface that transmitting terminal ultrasonic transducer and receiving end ultrasonic transducer are tightly attached to pipeline relatively respectively, plane where the two height center is alarm liquid level, and it will be in focusing ultrasonic wave to pipeline by acoustic lens, when the liquid in pipeline is located at alarm liquid level or more, ultrasonic signal is transmitted to receiving end ultrasonic transducer through liquid, and ultrasonic transducer disconnects；When the liquid in pipeline is lower than alarm liquid level, the ultrasonic signal that receiving end ultrasonic transducer receives is very faint, electric signal transmission faint at this time to ultrasonic adjuster, is lower than logic threshold, ultrasonic transducer conducting starting alarm power supply, and alarm sounds an alarm；The utility model utilizes ultrasonic wave attribute itself, can not sound an alarm automatically in safe range, the input condition of effective monitoring liquid, to ensure infusion safety accurately to liquid level real-time online monitoring.

Description

A kind of pipeline liquid level ultrasound alarm

Technical field

The utility model relates to Medical Devices additional devices, and in particular to a kind of pipeline liquid level ultrasound alarm.

Background technique

In hospital transfusion, medical staff and patient and its family members need to pay attention to whether the medical fluid in perfusion tube drips off, such as Fruit medical fluid has dripped off, and makes the processing behavior such as replace new drug or pull out needle immediately not in time, easily leads to patient's blood back etc. The generation of dangerous situation.The sufferer of hospital, China goes to a doctor quantity in increase situation, and bed feelings in short supply often occur in many hospitals Condition, or even in particular time, inpatient bed vacancy needs to dispose sufferer infusion in corridor.In this case, medical staff Operating pressure and intensity it is excessive, cannot pay attention to the transfusion condition of sufferer in time, increase the occurrence probability of accident hazard, thus disease The safety of trouble cannot adequately guarantee.It is nearly all that medical staff, stay in the ward to look after the patient night and day family members or patient are negative in China's clinical practice The input condition of duty observation medical fluid, there is no monitor this method of infusion using automatic alarm to ensure infusion safety.

Summary of the invention

For the above problems of the prior art, the utility model proposes a kind of pipeline liquid level ultrasound alarms.

The pipeline liquid level ultrasound alarm of the utility model include: transmitting terminal ultrasonic transducer, receiving end ultrasonic transducer, Driving power, switch, ultrasonic adjuster, alarm power supply and alarm；Wherein, transmitting terminal ultrasonic transducer and receiving end ultrasound Energy converter is oppositely arranged on the wall outer surface of pipeline, and the center of the two height is located at the same central axis perpendicular to pipeline Plane on, plane where the center of the two height is alarm liquid level；Transmitting terminal ultrasonic transducer and receiving end ultrasonic transduction Device is identical structure, and transmitting terminal ultrasonic transducer includes the transmitting terminal piezoelectric chip being successively set on transmitting terminal substrate, hair It penetrates end matching layer and transmitting terminal acoustic lens, receiving end ultrasonic transducer includes the reception side pressure being successively set on the substrate of receiving end Electric chip, receiving end matching layer and receiving end acoustic lens；The surface shape and pipeline of transmitting terminal acoustic lens and receiving end acoustic lens Wall outer surface match, transmitting terminal acoustic lens and receiving end acoustic lens are opposite, and the side wall of pipeline is tightly attached to by couplant Outer surface；Transmitting terminal piezoelectric chip is connected to driving power, driving power connection switch；Receiving end piezoelectric chip is connected to ultrasound Adjuster, ultrasonic adjuster are logic gates, ultrasonic adjuster connection alarm power supply；Alarm power supply is connected to alarm.

It turns on the switch, driving power sends an electrical signal to transmitting terminal piezoelectric chip, and transmitting terminal piezoelectric chip turns electric signal It is changed to ultrasonic signal, emitted end matching layer is transmitted to transmitting terminal acoustic lens, and transmitting terminal acoustic lens focuses ultrasonic signal Inlet pipe road；When the liquid in pipeline is located at alarm liquid level or more, ultrasonic signal is transmitted to receiving end acoustic lens through liquid, then Ultrasonic signal is converted to electric signal, electric signal transmission to ultrasound is adjusted to receiving end piezoelectric chip by received end matching layer Device, electric signal are greater than the logic threshold of logic gates, and logic gates is open circuit；When the liquid in pipeline is lower than alarm liquid level When, it is air between transmitting terminal acoustic lens and receiving end acoustic lens, ultrasonic signal cannot transmit in air, and pass through pipeline The ultrasonic signal that tube wall is propagated can dissipate, therefore receiving end acoustic lens can only receive faint ultrasonic signal, connect at this time Faint electric signal transmission to ultrasonic adjuster, faint electric signal are lower than the logic threshold of logic gates by receiving end piezoelectric chip Value, logic gates conducting, to connect alarm power supply, alarm is sounded an alarm.

Ultrasonic adjuster is logic gates, when electric signal is greater than the logic threshold of logic gates, logic gates For open circuit；When electric signal is less than the logic threshold of logic gates, logic gates conducting, to connect alarm power supply.

The height of transmitting terminal ultrasonic transducer and receiving end ultrasonic transducer is less than 5mm.

Transmitting terminal substrate and receiving end substrate are using the material for absorbing ultrasonic wave；Using the mixing material of epoxy resin and tungsten powder Material.

Alarm uses buzzer and/or LED alarm lamp.

Driving power and alarm power supply are using the button cell of lighter in weight or the lithium battery of lighter in weight.

Driving power and switch package are in driving box；Ultrasonic adjuster, alarm power supply and alarm are encapsulated in warning box In；Driving box and warning box are the can of plastic casing or lighter weight.Driving box and warning box are buckled together, and And through-hole is set on driving box and/or warning box, the infusion tubule of connecting pipe passes through among through-hole.

The advantages of the utility model:

The utility model is used is tightly attached to pipeline for transmitting terminal ultrasonic transducer and receiving end ultrasonic transducer relatively respectively Wall outer surface, plane where the two height center is alarm liquid level, and by acoustic lens by focusing ultrasonic wave to pipeline Interior, when the liquid in pipeline is located at alarm liquid level or more, ultrasonic signal is transmitted to receiving end ultrasonic transducer through liquid, will Ultrasonic signal is converted to electric signal, electric signal transmission to ultrasonic adjuster；When the liquid in pipeline is lower than alarm liquid level, connect The ultrasonic signal that receiving end ultrasonic transducer receives is very faint, and electric signal transmission faint at this time is low to ultrasonic adjuster In logic threshold, ultrasonic adjuster conducting starting alarm power supply, alarm is sounded an alarm；The utility model utilizes ultrasonic wave itself Attribute can not issue automatically police in safe range accurately to liquid level real-time online monitoring by being specifically designed Report, the input condition of effective monitoring liquid, to ensure infusion safety.The utility model serves not only as liquid in venous transfusion Body liquid level warning, additionally it is possible to for monitoring the liquid levels in other pipelines.

Detailed description of the invention

Fig. 1 is the schematic diagram of one embodiment of the pipeline liquid level ultrasound alarm of the utility model；

Fig. 2 is showing for the transmitting terminal ultrasonic transducer of one embodiment of the pipeline liquid level ultrasound alarm of the utility model It is intended to；

Fig. 3 is that one embodiment of the pipeline liquid level ultrasound alarm of the utility model is mounted on showing on Murphy type burette It is intended to.

Fig. 4 is that an example of the pipeline liquid level ultrasound alarm of the utility model is mounted on the experiment on Murphy type burette Result figure.

Specific embodiment

With reference to the accompanying drawing, by specific embodiment, the utility model is further described.

As shown in Figure 1, the pipeline liquid level ultrasound alarm of the present embodiment includes: that transmitting terminal ultrasonic transducer 1, receiving end are super Sonic transducer 2, driving power 3, switch 4, ultrasonic adjuster 5, alarm power supply 6, buzzer 71 and LED alarm lamp 72；Wherein, it sends out It penetrates end ultrasonic transducer and receiving end ultrasonic transducer is oppositely arranged on the wall outer surface of Murphy type burette 0, and the two is high The center of degree is located in the same plane perpendicular to the central axis of Murphy type burette, and the plane where the center of the two height is report Alert liquid level；Transmitting terminal ultrasonic transducer and receiving end ultrasonic transducer are identical structure, as shown in Fig. 2, transmitting terminal ultrasound is changed Energy device 1 includes transmitting terminal piezoelectric chip 12, transmitting terminal matching layer 13 and the transmitting terminal sound being successively set on transmitting terminal backing 11 Lens 14, receiving end ultrasonic transducer include the receiving end piezoelectric chip being successively set on the backing of receiving end, receiving end matching Layer and receiving end acoustic lens；The side wall appearance of the surface shape and Murphy type burette of transmitting terminal acoustic lens 14 and receiving end acoustic lens Face matches, and transmitting terminal acoustic lens and receiving end acoustic lens are opposite, and the side wall appearance of Murphy type burette 0 is tightly attached to by couplant Face；Transmitting terminal piezoelectric chip 12 is connected to driving power 3,3 connection switch 4 of driving power by conducting wire；Receiving end piezoelectric chip Ultrasonic adjuster 5, the ultrasonic connection of adjuster 5 alarm power supply 6 are connected to by conducting wire；Alarm power supply is connected to 71 He of buzzer LED alarm lamp 72.

Driving power 3 and switch 4 are encapsulated in driving box 8；Ultrasonic adjuster 5, alarm power supply 6, buzzer 71 and LED report Warning lamp 72 is encapsulated in warning box；It drives box and warning box is plastic casing.Driving box and warning box are buckled together, and in box The through-hole of 5mm is set on wall, and the infusion tubule 01 for connecting Murphy type burette passes through among two through-holes, is lightly placed on luxuriant phenanthrene On family name's dropper.

The alarm method of the pipeline liquid level ultrasound alarm of the present embodiment, comprising the following steps:

1) respectively in the surface daubing coupling agent of transmitting terminal acoustic lens and receiving end acoustic lens, couplant uses water, will send out End acoustic lens and the opposite wall outer surface for being tightly attached to Murphy type burette of receiving end acoustic lens are penetrated, is fixed on luxuriant Fei Shi drop with wire ferrule On tube outer surface, and transmitting terminal ultrasonic transducer and receiving end ultrasonic transducer are positioned at same perpendicular in Murphy type burette In the plane of mandrel, the plane where the two is alarm liquid level；Driving power 3 and switch 4 are encapsulated in driving box 8, will be surpassed Sound adjuster 5, alarm power supply 6, buzzer 71 and LED alarm lamp 72 are encapsulated in warning box, and box and warning box is driven to be buckled in one It rises, the infusion tubule 01 for connecting Murphy type burette passes through among two through-holes, is lightly placed on Murphy type burette 0, such as Fig. 3 It is shown；

2) it turns on the switch, driving power sends an electrical signal to transmitting terminal piezoelectric chip, and transmitting terminal piezoelectric chip is by electric signal Ultrasonic signal is converted to, emitted end matching layer is transmitted to transmitting terminal acoustic lens, and transmitting terminal acoustic lens gathers ultrasonic signal Coke is into Murphy type burette；

3) when the medical fluid in Murphy type burette is located at alarm liquid level or more, ultrasonic signal is transmitted to receiving end through medical fluid Ultrasonic signal is converted to electric signal, electric signal transmission is extremely to receiving end piezoelectric chip by acoustic lens, then received end matching layer Ultrasonic adjuster；

It 4) is empty between transmitting terminal acoustic lens and receiving end acoustic lens when the medical fluid in Murphy type burette is lower than alarm liquid level Gas, ultrasonic signal cannot transmit in air, and only 1/6 faint ultrasonic signal is propagated by Murphy type burette tube wall Past, therefore receiving end ultrasonic transducer can receive that ultrasonic signal is faint, receiving end piezoelectric chip is by faint electricity at this time Signal is transmitted to ultrasonic adjuster, and faint electric signal is lower than the logic threshold of logic gates, and logic gates is connected, thus Alarm power supply is connected, alarm sounds an alarm.

Fig. 4 is the experimental result picture of example, wherein figure (a) illustrates when the liquid level of Murphy type burette Chinese medicine liquid is lower than safe model When enclosing, transmitting signal and the comparison for connecing signal；Figure (b) explanation is sent out when Murphy type burette Chinese medicine liquid liquid level is in safe range It penetrates signal and connects the comparison of signal.Signal is received in comparison diagram (a) and figure (b) it can be found that receiving when being in safe range Signal (dangerous) 6 times or so for receiving signal when being alarm.Confirm the utility model safe and feasible.

It is finally noted that the purpose for publicizing and implementing example is to help to further understand the utility model, but originally The technical staff in field is understood that in the spirit and scope for not departing from the utility model and the attached claims, various Substitutions and modifications are all possible.Therefore, the utility model should not be limited to embodiment disclosure of that, and the utility model is wanted Seek the range of protection subject to the scope defined in the claims.

Claims (9)

1. a kind of pipeline liquid level ultrasound alarm, which is characterized in that it is described ultrasound alarm include: transmitting terminal ultrasonic transducer, Receiving end ultrasonic transducer, driving power, switch, ultrasonic adjuster, alarm power supply and alarm；Wherein, the transmitting terminal Ultrasonic transducer and receiving end ultrasonic transducer are oppositely arranged on the wall outer surface of pipeline, and the center of the two height is located at In the same plane perpendicular to the central axis of pipeline, the plane where the center of the two height is alarm liquid level；The transmitting terminal Ultrasonic transducer and receiving end ultrasonic transducer are identical structure, and transmitting terminal ultrasonic transducer includes being successively set on transmitting terminal Transmitting terminal piezoelectric chip, transmitting terminal matching layer and transmitting terminal acoustic lens on substrate, receiving end ultrasonic transducer include successively setting Set receiving end piezoelectric chip, receiving end matching layer and receiving end acoustic lens on the substrate of receiving end；The transmitting terminal acoustic lens Match with the surface shape of receiving end acoustic lens and the wall outer surface of pipeline, transmitting terminal acoustic lens and receiving end acoustic lens phase It is right, the wall outer surface of pipeline is tightly attached to by couplant；The transmitting terminal piezoelectric chip is connected to driving power, driving power Connection switch；The receiving end piezoelectric chip is connected to ultrasonic adjuster, and the ultrasound adjuster is logic gates, and ultrasound is adjusted Save device connection alarm power supply；The alarm power supply is connected to alarm.

2. ultrasound alarm as described in claim 1, which is characterized in that the ultrasound adjuster is logic gates, works as electricity When signal is greater than the logic threshold of logic gates, logic gates is open circuit；When electric signal is less than the logic of logic gates When threshold value, logic gates conducting.

3. ultrasound alarm as described in claim 1, which is characterized in that the transmitting terminal ultrasonic transducer and receiving end ultrasound The height of energy converter is less than 5mm.

4. ultrasound alarm as described in claim 1, which is characterized in that the transmitting terminal substrate and receiving end substrate are using suction Receive the material of ultrasonic wave.

5. ultrasound alarm as claimed in claim 4, which is characterized in that the transmitting terminal substrate and receiving end substrate use ring The mixing material of oxygen resin and tungsten powder.

6. ultrasound alarm as described in claim 1, which is characterized in that the alarm is alarmed using buzzer and/or LED Lamp.

7. ultrasound alarm as described in claim 1, which is characterized in that the driving power and alarm power supply are using button electricity Pond either lithium battery.

8. ultrasound alarm as described in claim 1, which is characterized in that the driving power and switch package are in driving box In；Ultrasonic adjuster, alarm power supply and alarm are encapsulated in warning box；The driving box and warning box are plastic casing, or Person is the can of lighter weight.

9. ultrasound alarm as claimed in claim 8, which is characterized in that the driving box and warning box are buckled together, and Through-hole is set on driving box and/or warning box, and the infusion tubule of connecting pipe passes through among through-hole.