CN203012913U - Anti-drowning alarm - Google Patents
Anti-drowning alarm Download PDFInfo
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- CN203012913U CN203012913U CN 201220638220 CN201220638220U CN203012913U CN 203012913 U CN203012913 U CN 203012913U CN 201220638220 CN201220638220 CN 201220638220 CN 201220638220 U CN201220638220 U CN 201220638220U CN 203012913 U CN203012913 U CN 203012913U
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Abstract
The utility model discloses an anti-drowning alarm including a shell. An alarm circuit chip is arranged in the shell. The alarm circuit chip includes a chip water-touching lead, a sensor circuit, a microcontroller, a wireless radio-frequency transmitting module and a power switching circuit used for converting voltage of a main power source to working voltage of the sensor circuit. A sensing capacitor is formed by the chip water-touching lead and the ground of the alarm circuit chip. The chip water-touching lead is connected with an input terminal of the sensor circuit. An output terminal of the sensor circuit is connected with an input terminal of the microcontroller. An output terminal of the microcontroller is connected with an input terminal of the wireless radio-frequency transmitting module. The anti-drowning alarm has advantages that the wireless radio-touching circuit can send an alarm signal only 1 millisecond later after the chip water- touching lead touches water, so that the reaction time is shortened substantially; the water-touching performance of the chip water-touching lead is not influenced by different water quality, so that the working stability is improved; and since the chip water-touching lead is integrated in the alarm circuit chip, the chip water-touching lead is not easy to damage, and the chip water-touching lead does not contact with water directly, so that the service lifetime is prolonged.
Description
Technical field
The utility model relates to a kind of security device, especially relates to a kind of anti-drowning alarm.
Background technology
Along with improving constantly of people's living standard, many families begin to have pondlet in private swimming pool, private garden, river etc.Yet, private swimming pools etc. also have the personal management unlike the lido, if child or animal are accidentally fallen in swimming pool and in time do not find or rescue, the accident of drowning may occur, therefore drowned problem has become a very important safety problem.
In order effectively to solve anti-drowned problem, a variety of anti-alarming drowning equipment have at home and abroad appearred on market.The performance of anti-alarming drowning equipment most critical is accuracy and the reaction time of drowned monitoring alarm, thereby failing to report wrong report, reaction time, the problems such as to grow be problem in the urgent need to address.
at present, common anti-drowning alarm generally includes housing and is arranged at the interior sensor of housing, microcontroller and less radio-frequency transmitter module, be welded with four copper pins with two pairs of two forms on sensor, the copper pin passes housing and is positioned at outside housing, the output terminal of sensor is connected with the input end of microcontroller, the output terminal of microcontroller is connected with the input end of less radio-frequency transmitter module, with it during use, this anti-drowning alarm is worn on, voltage signal between every pair of copper pin of sensor Real-time Obtaining, and be transferred to microcontroller, microcontroller judges whether to occur drowned according to the voltage signal that receives, when occuring when drowned, (arbitrary to the copper pin by the electrolyte conducting in water) microcontroller produces alerting signal, the concurrent alert signal of delivering newspaper is to the less radio-frequency transmitter module.There is following problem in this anti-drowning alarm: 1) it sends alerting signal from the tactile water of copper pin to the less radio-frequency transmitter module needs 5～10 milliseconds, and the reaction time is longer, and this will cause the drowning person to can not get succouring timely; 2) directly touch water because it utilizes four copper pins, by the conduction of the electrolyte in water, yet different water quality can affect the electric conductivity of water, therefore will cause the copper pin to touch the instability of water, thereby will cause this anti-drowning alarm the wrong report phenomenon to occur; 3) although it utilizes arbitrary tactile water to the copper pin can realize touching water function, because the copper pin is positioned at outside housing, the easy fracture of copper pin, therefore when arbitrary during to a copper pin fracture in the copper pin, this just can't realize tactile water function to the copper pin; 4) directly contact with water owing to being positioned at the outer copper pin of housing, therefore after long-time the use, the copper pin can get rusty, and will affect to touch the water-based energy, thereby will cause this anti-drowning alarm phenomenon to occur failing to report; 5) be located at outside housing because need pass housing with the copper pin, so assembling process is comparatively loaded down with trivial details.
Summary of the invention
Technical problem to be solved in the utility model is to provide short, good operating stability of a kind of reaction time, and the anti-drowning alarm of long service life.
the utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of anti-drowning alarm, comprise housing, it is characterized in that being provided with in described housing the warning circuit chip, described warning circuit chip comprises that chip touches the water wire, sensor circuit, microcontroller, less radio-frequency transmitter module and the power-switching circuit that is used for the voltage transitions of general supply is become the operating voltage of described sensor circuit, the ground that described chip touches water wire and described warning circuit chip consists of an inductance capacitance, described chip touches the water wire and is connected with the input end of described sensor circuit, the output terminal of described sensor circuit is connected with the input end of described microcontroller, the output terminal of described microcontroller is connected with the input end of described less radio-frequency transmitter module, described power-switching circuit is connected with described microcontroller, described sensor circuit is the capacitance of the described inductance capacitance of the induction caused signal that changes in real time, and the capacitance of the changing described inductance capacitance caused signal that changes is digital voltage signal, the transmission of digital voltage signal is given described microcontroller, described microcontroller determines whether to occur drowned according to digital voltage signal, produce alerting signal when occuring to drown, and the transmission alerting signal is given described less radio-frequency transmitter module.
described sensor circuit is mainly the touch sensible chip of ADAM02S by model, the first filter capacitor for the operating voltage of stablizing described sensor circuit, be used for regulating the second electric capacity that touches bright and beautiful sensitivity, the first current-limiting resistance that be used for to regulate touches bright and beautiful sensitivity be connected the second output current limiting resistance composition of the module that is connected with the output terminal of described sensor circuit, the 1st pin access high level or low level of described touch sensible chip, the 2nd pin of described touch sensible chip connects power supply ground by described the second electric capacity, the 3rd pin of described touch sensible chip is connected with the output terminal of described power-switching circuit and an end of described the first filter capacitor respectively, another termination power ground of described the first filter capacitor, the 4th pin of described touch sensible chip connects power supply ground, the 5th pin of described touch sensible chip touches the water wire by described the first current-limiting resistance and described chip and is connected, the 7th pin of described touch sensible chip is connected with the input end of described microcontroller by described the second output current limiting resistance.
The operating voltage of described sensor circuit is 3V.
It is the single-chip microcomputer of HT68F03C that described microcontroller adopts model, be connected with logic inverting circuit between described sensor circuit and described single-chip microcomputer, the output terminal of described sensor circuit directly is connected with the input end of described logic inverting circuit, and the output terminal of described logic inverting circuit directly is connected with the input end of described single-chip microcomputer; Described sensor circuit transmission of digital voltage signal is given described logic inverting circuit, and the digital voltage signal after described logic inverting circuit transmission is anti-phase is given described single-chip microcomputer.
Whether described warning circuit chip also comprises for detection of the voltage of general supply less than the battery low-voltage testing circuit of 3V, the input termination general supply of described battery low-voltage testing circuit, the output terminal of described battery low-voltage testing circuit is connected with described microcontroller; The voltage that described battery low-voltage testing circuit detects general supply is during less than 3V, the output terminal output low level of described battery low-voltage testing circuit, and the transmission low level is given described microcontroller, the described power-switching circuit of low level autoshutdown that described microcontroller basis receives.
described warning circuit chip also comprises be used to the system boot circuit of realizing started in non-contact form, described system boot main circuit will be comprised of magnetic resistance type sensor chip and the 3rd resistance that model is MRSS22L, the 1st pin of described magnetic resistance type sensor chip connects general supply, the 2nd pin of described magnetic resistance type sensor chip is connected with described microcontroller, described the 3rd resistance is connected between the 2nd pin of the 1st pin of described magnetic resistance type sensor chip and described magnetic resistance type sensor chip, the 3rd pin of described magnetic resistance type sensor chip connects power supply ground.
Described warning circuit chip also comprises the indicator light circuit that is connected with described microcontroller, is provided with LED light on described housing, and described indicator light circuit is connected with described LED light; During the output terminal output low level of described battery low-voltage testing circuit, the described indicator light circuit of described microprocessor controls drives the flicker continuously in setting-up time of described LED light; After described system boot circuit working, the described indicator light circuit of described microprocessor controls drives described LED light Chang Liang in setting-up time.
It is the wireless transmit chip of MICRF113 that described less radio-frequency transmitter module adopts model.
Described chip touches the water wire and is distributed in ringwise on the edge of described warning circuit chip, be provided with the through hole of the symmetrical two side of running through described housing on described housing, two described through holes are connected and form chip and put the chamber, described warning circuit chip is placed in described chip and puts in the chamber, and described chip touches the water wire and is positioned at the edge that described chip is put the chamber.
Compared with prior art, the utility model has the advantage of:
1) anti-drowning alarm of the present utility model touches water owing to adopting chip to touch the water wire in close mode, avoided traditional copper pin that utilizes directly to touch the process of water, ionization, conduction, therefore send alerting signal from the tactile water of the tactile water wire of chip to wireless radio frequency circuit and only need 1 millisecond, greatly shorten the reaction time, thereby made the drowning person can access relief timely.
2) because having utilized a chip that is distributed on the warning circuit chip to touch the water wire, the utility model realizes touching water function, and this chip touches inductance capacitance of ground formation of water wire and warning circuit chip, touch the water wire when close with water when chip like this, the capacitance of this inductance capacitance can change, the capacitance that this moment, sensor circuit can be sensed this inductance capacitance in real time caused signal that changes, therefore different water quality can not affect the tactile water-based energy that this chip touches the water wire, thereby has improved the job stability of this anti-drowning alarm.
3) be formed in the warning circuit chip because chip of the present utility model touches the water line set, and be difficult for damagedly, and chip touches the water wire and does not directly contact with water, the serviceable life of therefore effectively having improved this anti-drowning alarm.
Description of drawings
Fig. 1 is the composition frame chart of the warning circuit chip of anti-drowning alarm of the present utility model;
Fig. 2 is the circuit diagram of the sensor circuit in the warning circuit chip;
Fig. 3 is the circuit diagram of the system boot circuit in the warning circuit chip.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
a kind of anti-drowning alarm that the utility model proposes, it comprises the housing (not shown), be provided with warning circuit chip 1 as shown in Figure 1 in housing, warning circuit chip 1 comprises that chip touches water wire 11, sensor circuit 12, microcontroller 13, less radio-frequency transmitter module 14 and the power-switching circuit 15 that is used for the voltage transitions of general supply 2 is become the operating voltage of sensor circuit 12, the ground that chip touches water wire 11 and warning circuit chip 1 consists of an inductance capacitance, chip touches water wire 11 and is connected with the input end of sensor circuit 12, the output terminal of sensor circuit 12 is connected with the input end of microcontroller 13, the output terminal of microcontroller 13 is connected with the input end of less radio-frequency transmitter module 14, power-switching circuit 15 is connected with microcontroller 13.when this anti-drowning alarm uses, when anti-drowning alarm during near water, the tactile water wire 11 of chip can change with the capacitance of the inductance capacitance of the ground formation of warning circuit chip 1, the caused signal and the capacitance of sensor circuit 12 real-time sensitive electric capacity changes, and the capacitance of the transformation induction electric capacity caused signal that changes is digital voltage signal, the transmission of digital voltage signal is to microcontroller 13, microcontroller 13 determines whether to occur drowned according to digital voltage signal, produce alerting signal when occuring to drown, and the transmission alerting signal is to less radio-frequency transmitter module 14.
In this specific embodiment, chip touches water wire 11 and is distributed in ringwise on the edge of warning circuit chip 1, and chip touches water wire 11 and is an embedded golden copper cash of circle that is looped around the periphery of warning circuit chip 1.
at this, housing design can be become following structure: the through hole that the symmetrical two side of running through housing is set on housing, the through hole that wherein runs through a symmetrical two side is connected with the through hole that runs through another symmetrical two side and forms a chip and put the chamber, warning circuit chip 1 is placed in chip and puts in the chamber, and the four side peripheral exposed that make warning circuit chip 1 are outside four sidewalls of housing, make the chip that is looped around warning circuit chip 1 periphery touch water wire 11 and be positioned at the edge that chip is put the chamber, certainly for fear of making artificially alarm produce wrong report (such as finger touch touches water wire 11 to chip), should make chip touch water wire 11 residing position in actual design process is the position that hand can not touch easily, it is best that the tactile water-based that the housing of this structure can make chip touch water wire 11 can reach, certainly can touch the structure that the particular location of water wire 11 in warning circuit chip 1 designs housing according to chip in actual design process, can be fully near water so that touch water wire 11 in the water environment chips.
in this specific embodiment, sensor circuit as shown in Figure 2, it is mainly the touch sensible chip U1 of ADAM02S by model, the the first filter capacitor C1 that is used for the operating voltage of stable sensor circuitry, be used for regulating the second capacitor C 2 of touching bright and beautiful sensitivity, the the first current-limiting resistance R1 that be used for to regulate touches bright and beautiful sensitivity is the second output current limiting resistance R 2 compositions of logic inverting circuit 16 with being connected the module that is connected with the output terminal of sensor circuit 12, the 1st pin access high level or the low level of touch sensible chip U1, the 2nd pin of touch sensible chip U1 connects power supply ground by the second capacitor C 2, the 3rd pin of touch sensible chip U1 is connected with the output terminal of power-switching circuit 15 and the end of the first filter capacitor C1 respectively, another termination power ground of the first filter capacitor C1, the 4th pin of touch sensible chip U1 connects power supply ground, the 5th pin of touch sensible chip U1 touches water wire 11 by the first current-limiting resistance R1 with chip and is connected, the 7th pin of touch sensible chip U1 is connected by the input end of logic inverting circuit 16 with microcontroller 13 by the second output current limiting resistance R 2 again, the 6th pin and the 8th pin of touch sensible chip U1 are unsettled.at this, the operating voltage of sensor circuit 12 is 3V, the 1st pin access low level of touch sensible chip U1, the 1st pin of touch sensible chip U1 is output terminal level mode selecting side (MODE), the 2nd pin of touch sensible chip U1 is touch sensitivity electric capacity input end (VCI), the 3rd pin of touch sensible chip U1 is power positive end (VDD), the 4th pin of touch sensible chip U1 is power supply ground end (GND), the 5th pin of touch sensible chip U1 is for touching input end (TOUCH1), the 6th pin of touch sensible chip U1 is for touching input end (TOUCH2), the 7th pin of touch sensible chip U1 is control output end (OUT1), the 8th pin of touch sensible chip U1 is control output end (OUT2), at this, the capacitance by regulating the second capacitor C 2 and the resistance value of the first current-limiting resistance R1 can realize that chip touches the adjusting of the tactile bright and beautiful sensitivity of water wire 11, can realize that chip touches the adjusting of the distance of water wire 11 close water.
in this specific embodiment, it is the single-chip microcomputer of HT68F03C that microcontroller 13 can adopt model, also can adopt other control circuits with identical function, be that the single-chip microcomputer of HT68F03C is during as microcontroller 13 when adopting model, that negative edge is effective because this single-chip microcomputer receives signal, but the digital voltage signal of the output terminal of sensor circuit 12 output is opposite with the logic identification of this single-chip microcomputer, therefore be connected a logic inverting circuit 16 between sensor circuit 12 and single-chip microcomputer, the output terminal of sensor circuit 12 directly is connected with the input end of logic inverting circuit 16, and the output terminal of logic inverting circuit 16 directly is connected with the input end of single-chip microcomputer, sensor circuit 12 transmission of digital voltage signals are to logic inverting circuit 16, digital voltage signal after logic inverting circuit 16 transmission are anti-phase is to single-chip microcomputer, when the digital voltage signal of the output terminal of sensor circuit 12 output is low level 0, convert high level 1 to through logic inverting circuit 16, this moment, single-chip microcomputer was determined to occur drowned according to the high level 1 of logic inverting circuit 16 outputs, when the digital voltage signal of the output terminal of sensor circuit 12 output is high level 1, convert low level 0 to through logic inverting circuit 16, this moment, single-chip microcomputer was determined not occur drowned according to the level 0 of logic inverting circuit 16 outputs.At this, logic inverting circuit 16 adopts prior art.
in this specific embodiment, whether warning circuit chip 1 also comprises for detection of the voltage of general supply less than the battery low-voltage testing circuit 17 of 3V, is used for realizing the system boot circuit 18 of started in non-contact form and the indicator light circuit 19 that is connected with microcontroller 13, the input termination general supply 2 of battery low-voltage testing circuit 17, the output terminal of battery low-voltage testing circuit 17 is connected with microcontroller 13, system boot circuit 18 as shown in Figure 3, its magnetic resistance type sensor chip U2 and the 3rd resistance R 3 that is mainly MRSS22L by model forms, the 1st pin of magnetic resistance type sensor chip U2 connects general supply 2, the 2nd pin of magnetic resistance type sensor chip U2 is connected with microcontroller 13, the 3rd resistance R 3 is connected between the 2nd pin of the 1st pin of magnetic resistance type sensor chip U2 and magnetic resistance type sensor chip U2, the 3rd pin of magnetic resistance type sensor chip U2 connects power supply ground, because the system boot circuit 18 of this structure can be realized started in non-contact form, solved the drawback that the contact start-up mode exists, therefore can effectively improve the water resistance of this anti-drowning alarm, be provided with LED light on housing, indicator light circuit 19 is connected with LED light.
after system boot circuit 18 work namely after normal power-up, operating voltage when power-switching circuit 15 becomes sensor circuit 12 normal operation with the voltage transitions of general supply 2, when voltage circle of general supply 2 during in 3.0V-4.2V, the operating voltage of sensor circuit 12 is 3.0V, otherwise sensor circuit 12 is not worked, in the normal situation of the operating voltage of sensor circuit 12, microcontroller 13 control indicator light circuit 19 driving LED pilot lamp are bright 1 second often, starts working with this anti-drowning alarm of reminding user, this anti-drowning alarm in the course of the work, the voltage that general supply 2 detected when battery low-voltage testing circuit 17 is during less than 3V, the output terminal output low level of battery low-voltage testing circuit 17, and the transmission low level is to microcontroller 13, microcontroller 13 is the drowned measuring ability of autoshutdown according to the low level autoshutdown power-switching circuit 15 that receives, microcontroller 13 control indicator light circuit 19 driving LED pilot lamp glimmer 3 times every 7 seconds simultaneously, the expression battery is general supply 2 low pressure, need to charge to this anti-drowning alarm with reminding user, effectively avoided the generation of the situation that this anti-drowning alarm can not accurately report to the police under low voltage condition, the voltage that general supply 2 detected when battery low-voltage testing circuit 17 is during more than or equal to 3V, the output terminal output high level of battery low-voltage testing circuit 17, and the transmission high level is to microcontroller 13, this moment, this anti-drowning alarm continued normal operation, and microcontroller 13 control indicator light circuit 19 driving LED pilot lamp glimmer 1 time every 7 seconds in normal operation, during this anti-drowning alarm shutdown, microcontroller 13 is controlled indicator light circuit 19 driving LED pilot lamp and is glimmered 5 times continuously.In actual design process, light on and off and the flicker situation that can control according to the actual requirements LED light are under different states to distinguish this anti-drowning alarm.
In the present embodiment, it is the wireless transmit chip of MICRF113 that less radio-frequency transmitter module 14 can adopt model, also can adopt the wireless transmit chip of other model; Power-switching circuit 15 adopts prior art; Battery low-voltage testing circuit 17 adopts prior art; Indicator light circuit 19 adopts existing LED lamp drive circuit.
Claims (9)
1. anti-drowning alarm, comprise housing, it is characterized in that being provided with in described housing the warning circuit chip, described warning circuit chip comprises that chip touches the water wire, sensor circuit, microcontroller, less radio-frequency transmitter module and the power-switching circuit that is used for the voltage transitions of general supply is become the operating voltage of described sensor circuit, the ground that described chip touches water wire and described warning circuit chip consists of an inductance capacitance, described chip touches the water wire and is connected with the input end of described sensor circuit, the output terminal of described sensor circuit is connected with the input end of described microcontroller, the output terminal of described microcontroller is connected with the input end of described less radio-frequency transmitter module, described power-switching circuit is connected with described microcontroller, described sensor circuit is the capacitance of the described inductance capacitance of the induction caused signal that changes in real time, and the capacitance of the changing described inductance capacitance caused signal that changes is digital voltage signal, the transmission of digital voltage signal is given described microcontroller, described microcontroller determines whether to occur drowned according to digital voltage signal, produce alerting signal when occuring to drown, and the transmission alerting signal is given described less radio-frequency transmitter module.
2. a kind of anti-drowning alarm according to claim 1, it is characterized in that described sensor circuit is mainly the touch sensible chip of ADAM02S by model, the first filter capacitor for the operating voltage of stablizing described sensor circuit, be used for regulating the second electric capacity that touches bright and beautiful sensitivity, the first current-limiting resistance that be used for to regulate touches bright and beautiful sensitivity be connected the second output current limiting resistance composition of the module that is connected with the output terminal of described sensor circuit, the 1st pin access high level or low level of described touch sensible chip, the 2nd pin of described touch sensible chip connects power supply ground by described the second electric capacity, the 3rd pin of described touch sensible chip is connected with the output terminal of described power-switching circuit and an end of described the first filter capacitor respectively, another termination power ground of described the first filter capacitor, the 4th pin of described touch sensible chip connects power supply ground, the 5th pin of described touch sensible chip touches the water wire by described the first current-limiting resistance and described chip and is connected, the 7th pin of described touch sensible chip is connected with the input end of described microcontroller by described the second output current limiting resistance.
3. a kind of anti-drowning alarm according to claim 2, the operating voltage that it is characterized in that described sensor circuit is 3V.
4. the described a kind of anti-drowning alarm of any one according to claim 1 to 3, it is characterized in that it is the single-chip microcomputer of HT68F03C that described microcontroller adopts model, be connected with logic inverting circuit between described sensor circuit and described single-chip microcomputer, the output terminal of described sensor circuit directly is connected with the input end of described logic inverting circuit, and the output terminal of described logic inverting circuit directly is connected with the input end of described single-chip microcomputer; Described sensor circuit transmission of digital voltage signal is given described logic inverting circuit, and the digital voltage signal after described logic inverting circuit transmission is anti-phase is given described single-chip microcomputer.
5. a kind of anti-drowning alarm according to claim 4, it is characterized in that described warning circuit chip also comprises for detection of the voltage of general supply whether less than the battery low-voltage testing circuit of 3V, the input termination general supply of described battery low-voltage testing circuit, the output terminal of described battery low-voltage testing circuit is connected with described microcontroller; The voltage that described battery low-voltage testing circuit detects general supply is during less than 3V, the output terminal output low level of described battery low-voltage testing circuit, and the transmission low level is given described microcontroller, the described power-switching circuit of low level autoshutdown that described microcontroller basis receives.
6. a kind of anti-drowning alarm according to claim 5, it is characterized in that described warning circuit chip also comprises be used to the system boot circuit of realizing started in non-contact form, described system boot main circuit will be comprised of magnetic resistance type sensor chip and the 3rd resistance that model is MRSS22L, the 1st pin of described magnetic resistance type sensor chip connects general supply, the 2nd pin of described magnetic resistance type sensor chip is connected with described microcontroller, described the 3rd resistance is connected between the 2nd pin of the 1st pin of described magnetic resistance type sensor chip and described magnetic resistance type sensor chip, the 3rd pin of described magnetic resistance type sensor chip connects power supply ground.
7. a kind of anti-drowning alarm according to claim 6, it is characterized in that described warning circuit chip also comprises the indicator light circuit that is connected with described microcontroller, be provided with LED light on described housing, described indicator light circuit is connected with described LED light; During the output terminal output low level of described battery low-voltage testing circuit, the described indicator light circuit of described microprocessor controls drives the flicker continuously in setting-up time of described LED light; After described system boot circuit working, the described indicator light circuit of described microprocessor controls drives described LED light Chang Liang in setting-up time.
8. a kind of anti-drowning alarm according to claim 7, is characterized in that it is the wireless transmit chip of MICRF113 that described less radio-frequency transmitter module adopts model.
9. a kind of anti-drowning alarm according to claim 8, it is characterized in that described chip touches the water wire and is distributed in ringwise on the edge of described warning circuit chip, be provided with the through hole of the symmetrical two side of running through described housing on described housing, two described through holes are connected and form chip and put the chamber, described warning circuit chip is placed in described chip and puts in the chamber, and described chip touches the water wire and is positioned at the edge that described chip is put the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638220 CN203012913U (en) | 2012-11-27 | 2012-11-27 | Anti-drowning alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638220 CN203012913U (en) | 2012-11-27 | 2012-11-27 | Anti-drowning alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012913U true CN203012913U (en) | 2013-06-19 |
Family
ID=48604486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638220 Withdrawn - After Issue CN203012913U (en) | 2012-11-27 | 2012-11-27 | Anti-drowning alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021135A (en) * | 2012-11-27 | 2013-04-03 | 宁波高新区英诺科技有限公司 | Drowning prevention alarm |
-
2012
- 2012-11-27 CN CN 201220638220 patent/CN203012913U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021135A (en) * | 2012-11-27 | 2013-04-03 | 宁波高新区英诺科技有限公司 | Drowning prevention alarm |
| CN103021135B (en) * | 2012-11-27 | 2015-09-09 | 宁波高新区英诺科技有限公司 | A kind of anti-drowning alarm |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20150909 |
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| RGAV | Abandon patent right to avoid regrant |