CN204709536U - A kind of capacitance sensing type acousto-optic alarm for infusion - Google Patents
A kind of capacitance sensing type acousto-optic alarm for infusion Download PDFInfo
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- CN204709536U CN204709536U CN201520268591.0U CN201520268591U CN204709536U CN 204709536 U CN204709536 U CN 204709536U CN 201520268591 U CN201520268591 U CN 201520268591U CN 204709536 U CN204709536 U CN 204709536U
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Abstract
The utility model discloses a kind of capacitance sensing type acousto-optic alarm for infusion, comprise chip U1, resistance R1, interface J1, buzzer B1, chip U1 pin 1 connects battery BT1 positive pole and electric capacity C1 respectively, the electric capacity C1 other end connects battery BT1 negative pole and ground connection, chip U1 pin 2 connects ground connection buzzer B1 and resistance R2 respectively, the resistance R2 other end connects ground connection light emitting diode D1 positive pole, chip U1 pin 3 connects touch electrode plate PAD2 by resistance R4, chip U1 pin 4 connecting interface J1 pin 1.This utility model profit improves the accuracy of infusion alarming, reduces power consumption and extends working time; Design can the battery cover of pull, is convenient for changing battery; Adopt type of alarm sound, light to combine, be convenient to during warning find, be applicable to very much promoting the use of.
Description
Technical field
This utility model relates to a kind of alarm for infusion, specifically a kind of capacitance sensing type acousto-optic alarm for infusion.
Background technology
At present, known alarm for infusion mainly contains according to operation principle: a kind of is the patent No. 97101591 of 1998/09/23 bulletin, patent name alarm for infusion, this alarm for infusion is according to alleviating along with liquid bottle weight in infusion process, judged by the change of sense weight, thus send alarm signal; A kind of is the patent No. 201220110218 of 2012/12/26 bulletin, and patent name photoelectric infusion reminiscences utilizes the photoelectric sensor be fixed on tube for transfusion, judges whether liquid is finished according to the reflection of light and refraction situation.There is following problem in these technology: 1. single use, cannot change circulating battery and use; 2. transfusion reminding mode only has sound prompting; 3. the warning of form of weighing, the carrier due to transfusion bottle has various material and different deadweights, have vial, and also have plastic bottle, equipment cannot identify automatically, use not convenient.4. some medicinal liquid is murky in infusion process, the optoelectronic induction of infrared mode, cannot ensure the safety of infusing.
Utility model content
The purpose of this utility model is to provide a kind of capacitance sensing type acousto-optic alarm for infusion, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of capacitance sensing type acousto-optic alarm for infusion, comprise chip U1, resistance R1, interface J1, conductive sponge PAD1, touch electrode plate PAD2, buzzer B1, described chip U1 pin 1 connects battery BT1 positive pole and electric capacity C1 respectively, the electric capacity C1 other end connects battery BT1 negative pole and ground connection, described chip U1 pin 2 connects ground connection buzzer B1 and resistance R2 respectively, the resistance R2 other end connects ground connection light emitting diode D1 positive pole, described chip U1 pin 3 connects touch electrode plate PAD2 by resistance R4, described conductive sponge PAD1 is connected with ground wire, chip U1 pin 4 connecting interface J1 pin 1, chip U1 pin 5 connects ground connection key switch S1 and resistance R3 respectively, the resistance R3 other end is also connected to battery BT1 positive pole, described chip U1 pin 6 connecting interface J1 pin 5, chip U1 pin 7 is connecting interface J1 pin 4 and resistance R1 respectively, the resistance R1 other end connects ground connection light emitting diode D1 positive pole, described interface J1 pin 2 also connects battery BT1 positive pole, interface J1 pin 3 ground connection.
As further program of the utility model: described chip U1 model is PIC12LF1822.
As this utility model further scheme: described battery BT1 is arranged in battery case, and cell through lid adopts pull design.
Compared with prior art, the beneficial effects of the utility model are: this utility model profit improves the accuracy of infusion alarming, reduce power consumption and extend working time; Design can the battery cover of pull, is convenient for changing battery; Adopt type of alarm sound, light to combine, be convenient to during warning find, adopt capacitance sensing type monitoring, gauge without light source direct irradiation tube for transfusion, ensure infusion safety, be applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of capacitance sensing type acousto-optic alarm for infusion.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of capacitance sensing type acousto-optic alarm for infusion, comprise chip U1, resistance R1, interface J1, conductive sponge PAD1, touch electrode plate PAD2, buzzer B1, chip U1 pin 1 connects battery BT1 positive pole and electric capacity C1 respectively, the electric capacity C1 other end connects battery BT1 negative pole and ground connection, chip U1 pin 2 connects ground connection buzzer B1 and resistance R2 respectively, the resistance R2 other end connects ground connection light emitting diode D1 positive pole, chip U1 pin 3 connects touch electrode plate PAD2 by resistance R4, conductive sponge PAD1 is connected with ground wire, chip U1 pin 4 connecting interface J1 pin 1, chip U1 pin 5 connects ground connection key switch S1 and resistance R3 respectively, the resistance R3 other end is also connected to battery BT1 positive pole, chip U1 pin 6 connecting interface J1 pin 5, chip U1 pin 7 is connecting interface J1 pin 4 and resistance R1 respectively, the resistance R1 other end connects ground connection light emitting diode D1 positive pole, interface J1 pin 2 also connects battery BT1 positive pole, interface J1 pin 3 ground connection.
Chip U1 model is PIC12LF1822.
Battery BT1 is arranged in battery case, and cell through lid adopts pull design.
Operation principle of the present utility model is: refer to Fig. 1, according to capacitance C=ε S/d, ε is dielectric constant, S is electrode area, d is the distance of capacitor plate, when S and d is fixed value, capacitance C is only relevant with DIELECTRIC CONSTANT ε, when starting to infuse, tube for transfusion is full of medicinal liquid, now push button switch S 1, chip U1 records electric capacity initial value, chip U1 enters resting state, wake up every 0.5S and once read capacitance variation situation, when medicinal liquid has flowed soon, medium between touch electrode plate PAD becomes air by medicinal liquid, thus dielectric constant changes, when change exceedes set threshold values, start to carry out sound and light alarm prompting.
Formed two electrodes of electric capacity by conductive sponge PAD1 and touch electrode plate PAD2, tube for transfusion and medicinal liquid are as capacitor dielectric, and conductive sponge PAD1 connects the accuracy rate that effectively can improve capacitance sampling over the ground, increase capacity of resisting disturbance.
To those skilled in the art, obvious this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or basic feature, can realize this utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in this utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a capacitance sensing type acousto-optic alarm for infusion, comprise chip U1, resistance R1, interface J1, conductive sponge PAD1, touch electrode plate PAD2, buzzer B1, it is characterized in that, described chip U1 pin 1 connects battery BT1 positive pole and electric capacity C1 respectively, the electric capacity C1 other end connects battery BT1 negative pole and ground connection, described chip U1 pin 2 connects ground connection buzzer B1 and resistance R2 respectively, the resistance R2 other end connects ground connection light emitting diode D1 positive pole, described chip U1 pin 3 connects touch electrode plate PAD2 by resistance R4, described conductive sponge PAD1 is connected with ground wire, chip U1 pin 4 connecting interface J1 pin 1, chip U1 pin 5 connects ground connection key switch S1 and resistance R3 respectively, the resistance R3 other end is also connected to battery BT1 positive pole, described chip U1 pin 6 connecting interface J1 pin 5, chip U1 pin 7 is connecting interface J1 pin 4 and resistance R1 respectively, the resistance R1 other end connects ground connection light emitting diode D1 positive pole, described interface J1 pin 2 also connects battery BT1 positive pole, interface J1 pin 3 ground connection.
2. capacitance sensing type acousto-optic alarm for infusion according to claim 1, is characterized in that, described chip U1 model is PIC12LF1822.
3. capacitance sensing type acousto-optic alarm for infusion according to claim 1, is characterized in that, described battery BT1 is arranged in battery case, and cell through lid adopts pull design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520268591.0U CN204709536U (en) | 2015-04-29 | 2015-04-29 | A kind of capacitance sensing type acousto-optic alarm for infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520268591.0U CN204709536U (en) | 2015-04-29 | 2015-04-29 | A kind of capacitance sensing type acousto-optic alarm for infusion |
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| CN204709536U true CN204709536U (en) | 2015-10-21 |
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| CN201520268591.0U Expired - Fee Related CN204709536U (en) | 2015-04-29 | 2015-04-29 | A kind of capacitance sensing type acousto-optic alarm for infusion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569739A (en) * | 2017-07-17 | 2018-01-12 | 福建星网锐捷通讯股份有限公司 | Detection method and device for the capacitance inductor of woven hose liquid detecting |
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2015
- 2015-04-29 CN CN201520268591.0U patent/CN204709536U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569739A (en) * | 2017-07-17 | 2018-01-12 | 福建星网锐捷通讯股份有限公司 | Detection method and device for the capacitance inductor of woven hose liquid detecting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160429 |