CN204881757U - Liquid level alarm device - Google Patents
Liquid level alarm device Download PDFInfo
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- CN204881757U CN204881757U CN201520614091.8U CN201520614091U CN204881757U CN 204881757 U CN204881757 U CN 204881757U CN 201520614091 U CN201520614091 U CN 201520614091U CN 204881757 U CN204881757 U CN 204881757U
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Abstract
The utility model discloses a liquid level alarm device, including singlechip, optoelectronic coupler, level sensor and radio communication chip, be equipped with data signal input, radio signal recepition end and a radio signal transmission end on the singlechip, optoelectronic coupler includes liquid level signal input part and liquid level signal output part, the radio communication chip includes the 2nd radio signal recepition end and the 2nd radio signal transmission end, the 2nd radio signal recepition end and the 2nd radio signal transmission end be electric connection respectively a radio signal transmission end and a radio signal receiving terminal, level sensor electric connection liquid level signal input part, liquid level signal output part electric connection data signal input. Compared with the prior art, this liquid level alarm device realizes passing through the user that alarm signal reminded the distal end when the water level of relevant position department is too high, and the signal content contains the sensor mounted position, and software independent setting can be passed through to the concrete parameter of every passageway.
Description
Technical field
The utility model belongs to warning device field, more particularly, the utility model relates to a kind of applying to and needs the liquid level alarm device in watch-keeping liquid level place, and extends to by changing different sensors the warning device monitoring other signals such as temperature, flow.
Background technology
To build and in-service nuclear power station unit pumping plant, when flood season rises, water logging device events easily occurs at present, result in system equipment by water logging, cause huge cost and progress lost.Existing equipment integral installation is under gully, and because downhole communication effect is bad, cause data easily because network signal reason can not send in time, the cell host replacement cycle is shorter, and needs to open well lid in each maintenance process and carry out, and wastes time and energy.
Utility model content
The purpose of this utility model is: provide a kind of liquid level alarm device, apply to need watch-keeping liquid level and extend to by changing different sensors the place monitoring other signals such as temperature, flow, both there is real time monitoring function, have again early warning and warning function, software and hardware closely becomes one simultaneously.
In order to realize above-mentioned utility model object, the utility model provides a kind of liquid level alarm device, comprise single-chip microcomputer, photoelectrical coupler, liquid level sensor and wireless communication chips, described single-chip microcomputer is provided with digital signal input end, first reception of wireless signals end and the first wireless signal transmission end, described photoelectrical coupler comprises liquid level signal input end and liquid level signal output terminal, described wireless communication chips comprises the second reception of wireless signals end and the second wireless signal transmission end, described second reception of wireless signals end and the second wireless signal transmission end are electrically connected described first wireless signal transmission end and the first reception of wireless signals end respectively, described liquid level sensor is electrically connected liquid level signal input end, described liquid level signal output terminal is electrically connected digital signal input end.
One as the utility model liquid level alarm device is improved, described liquid level alarm device also comprises level shifting circuit, described single-chip microcomputer is also provided with digital signal reception end and digital signal transmission end, described level shifting circuit comprises level transferring chip, described level transferring chip comprises the first level input, first level output end, second electrical level input end and second electrical level output terminal, described first level input and second electrical level output terminal are electrically connected a host computer respectively, described first level output end and second electrical level input end are electrically connected described digital signal reception end and digital signal transmission end respectively.
One as the utility model liquid level alarm device is improved, described photoelectrical coupler also comprises the first link, described liquid level sensor is plugged on one first connector, described first connector comprises the second link and the 3rd link, described second link is electrically connected liquid level signal input end, described 3rd link is electrically connected the first link, and described liquid level signal output terminal is electrically connected digital signal input end.
One as the utility model liquid level alarm device is improved, and described first level input is electrically connected the level signal transmission end of one second connector, and described second electrical level output terminal is electrically connected the level signal receiving end of the second connector.
One as the utility model liquid level alarm device is improved, described liquid level alarm device also comprises feed circuit, described feed circuit comprise alternating voltage conversion chip, charging chip and boost chip, the input end of described alternating voltage conversion chip connects line voltage, the output terminal of described alternating voltage conversion chip is electrically connected described charging chip, and described charging chip and boost chip are electrically connected a lithium ion battery respectively.
One as the utility model liquid level alarm device is improved, described liquid level alarm device also comprises warning circuit, described warning circuit comprises triode and relay, described relay comprises coil unit and switch element, described single-chip microcomputer also comprises an alarm signal output ends, the base stage of described triode is electrically connected described alarm signal output ends, the emitter of described triode is electrically connected the negative electrode of a diode, the plus earth of described diode, one end of described switch element is electrically connected the fire wire output end of line voltage, the other end of described switch element is electrically connected the zero line output terminal of line voltage.
One as the utility model liquid level alarm device is improved, and described triode is a NPN type triode.
One as the utility model liquid level alarm device is improved, and described second connector is a RS232 interface.
One as the utility model liquid level alarm device is improved, and described lithium ion battery comprises two electric battery.
One as the utility model liquid level alarm device is improved, and the level switch of each liquid level sensor is arranged a water level preset value.
Compared with prior art, the beneficial effect of the utility model liquid level alarm device is: 1, realize the user being reminded far-end when the water level of corresponding position is too high by SMS alarm, this short message content comprises sensor mounting location, and the design parameter of each passage independently can be arranged by software; 2, realize changing battery when battery electric quantity is about to exhaust in time by inform by short message user; 3, arrange by all parameters of computer software to liquid level alarm; 4, can realize civil power and battery dual power supply, when civil power normal power supply, battery and booster circuit do not work, and when civil power is without electricity, described feed circuit automatically switch to powered battery; 5, electrical isolation can be realized to all IO channel by described photoelectrical coupler and relay, ensure device security stable operation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model liquid level alarm device and beneficial effect thereof are described in detail.
Fig. 1 is the circuit diagram of the better embodiment of the single-chip microcomputer of the utility model liquid level alarm device.
Fig. 2 is the circuit diagram of the photoelectrical coupler of liquid level alarm device in Fig. 1.
Fig. 3 is the circuit diagram of the wireless communication chips of liquid level alarm device in Fig. 1.
Fig. 4 is the circuit diagram of the feed circuit of liquid level alarm device in Fig. 1.
Fig. 5 is the circuit diagram of the level shifting circuit of liquid level alarm device in Fig. 1.
Fig. 6 is the circuit diagram of the warning circuit of liquid level alarm device in Fig. 1.
Embodiment
In order to make the purpose of this utility model, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that, the embodiment described in this instructions is only used to explain the utility model, is not intended to limit the utility model.
Refer to Fig. 1 to Fig. 6, the better embodiment of the utility model liquid level alarm device comprises single-chip microcomputer 1, two photoelectrical coupler 2, some liquid level sensors 3, wireless communication chips 4, feed circuit 5, level shifting circuit 6 and a warning circuit 7.
Described single-chip microcomputer 1 is provided with some digital signal input end PC0-PC7, a digital signal reception end PE0, a digital signal transmission end PE1, one first reception of wireless signals end PD1, an one first wireless signal transmission end PD2 and alarm signal output ends PB5.Each photoelectrical coupler 2 comprises some liquid level signal input end P1-P4, some liquid level signal output terminal P5-P8 and some first link P9-P12.Each liquid level sensor 3 is plugged on one first connector J1.Described first connector J1 comprises some second links and the 3rd link.Some second links are electrically connected some liquid level signal input end P1-P4 of each photoelectrical coupler 2 respectively.Some 3rd links are electrically connected some first link P9-P12 of each photoelectrical coupler 2 respectively via some resistance R1-R8.Some liquid level signal output terminal P5-P8 of each photoelectrical coupler 2 are electrically connected some digital signal input end PC0-PC7 respectively.Wherein, some liquid level signal output terminal installation sites and telephone number can be stored in described single-chip microcomputer 1.
Described wireless communication chips 4 comprises one second reception of wireless signals end P29 and one second wireless signal transmission end P30.Described second reception of wireless signals end P29 and the second wireless signal transmission end P30 is electrically connected described first wireless signal transmission end PD2 and the first reception of wireless signals end PD1 respectively.
Described feed circuit 5 comprise an alternating voltage conversion chip U1, an a charging chip U2 and boost chip U3.Described alternating voltage conversion chip U1 connects a 220V line voltage, and 220V line voltage is converted to the direct voltage output an of+5V to described charging chip U2.Described charging chip U2 charges to a lithium ion battery BT according to the direct voltage output charging current of+5V, and the supply voltage of described lithium ion battery BT boosts to after+5V through boost chip U3 powers to described single-chip microcomputer 1, photoelectrical coupler 2, wireless communication chips 4, level shifting circuit 6 and warning circuit 7.Wherein, described lithium ion battery BT comprises two electric battery, and described lithium ion battery BT provides the DC voltage an of+3.6V to+4.2V.
Described level shifting circuit 6 comprises a level transferring chip U4, and described level transferring chip U4 comprises one first level input in1, one first level output end out1, a second electrical level input end in2 and a second electrical level output terminal out2.Described first level input in1 is electrically connected the level signal transmission end of one second connector J2.Described first level output end out1 is electrically connected one end of one the 3rd connector J3 via a resistance R9, and the other end of described 3rd connector J3 is electrically connected described digital signal transmission end PE1.Described second electrical level input end in2 is electrically connected one end of one the 4th connector J4 via a resistance R10, and the other end of described 4th connector J4 is electrically connected described digital signal reception end PE0.Described second electrical level output terminal out2 is electrically connected the level signal receiving end of the second connector J2.Wherein, described level transferring chip U4 is Maxim is the interface circuit MAX232 chip that the rs-232 standard serial ports of computer designs specially, and described second connector J2 is a RS232 interface.Described level transferring chip U4 is communicated with a host computer by the second connector J2.
Described warning circuit 7 comprises a triode T, a relay and one the 5th connector J5.Described relay comprises an a coil unit M and switch element K.The base stage of described triode T is electrically connected described alarm signal output ends PB5 via a resistance R11.The emitter of described triode T is electrically connected the negative electrode of a diode D, the plus earth of described diode D.One end of described switch element K is electrically connected the fire wire output end L of 220V line voltage, and the other end of described switch element K is electrically connected one end of described 5th connector J5.The other end of described 5th connector J5 is electrically connected the zero line output terminal N of 220V line voltage.Wherein, described triode T is a NPN type triode.The alarm unit of connection one sounding or luminescence on described 5th connector J5.
Simply illustrate to the principle of work of above-mentioned liquid level alarm device below:
The level switch of each liquid level sensor 3 can be arranged a water level preset value, some liquid level sensors 3 are installed in each position needing to carry out water level detecting respectively.Some liquid level sensors 3 sense the water level value of each position respectively, and send the digital signal of a noble potential or electronegative potential to described single-chip microcomputer 1 via described photoelectrical coupler 2 when exceeding the water level preset value on liquid level sensor 3 at the water level value of corresponding position.Described single-chip microcomputer 1 sends the alerting signal of a noble potential to the base stage of described triode T, described triode T conducting according to the digital signal of noble potential or electronegative potential.Described coil unit M is energized work by switch element K adhesive, 220V line voltage is connected and is flowed through the alarm unit of sounding or the luminescence that described 5th connector J5 connects, to remind on-the-spot user, described alarm unit sounding or luminous alarm notice that the equipment of corresponding position may have the danger of waterflooding.
Simultaneously, described single-chip microcomputer 1 parses the positional information of corresponding liquid level sensor 3 according to noble potential or the digital signal of electronegative potential and some liquid level signal output terminal installation sites of storage, and by wireless communication chips 4 and wireless network, the positional information of this position is given the mobile communication equipment of a far-end user by short message sending, and then user is reminded to notice that the equipment of corresponding position may have the danger of waterflooding.Far-end user have read the note of the positional information of this position by mobile communication equipment after, mobile communication equipment sends one by wireless network and wireless communication chips 4 and feeds back to described single-chip microcomputer 1, to guarantee that the content of this alarming short message is known by user.If described single-chip microcomputer 1 does not receive this feedback information always, described single-chip microcomputer 1 can continue to send alarming short message until user has read the content of this alarming short message.Wherein, described photoelectrical coupler 2 plays buffer action to the water level value that some liquid level sensors 3 sense, and avoids the signal received at its input end to produce interference to the signal that its output terminal transmits.
When 220V line voltage normal power supply, the DC voltage that 220V line voltage is converted to+5V through described alternating voltage conversion chip U1 is directly powered for described single-chip microcomputer 1, photoelectrical coupler 2, wireless communication chips 4, level shifting circuit 6 and warning circuit 7, and the DC voltage of+5V is charged to described lithium ion battery BT via described charging chip U2 simultaneously.When the power-off of 220V line voltage, the DC voltage that the DC voltage that described lithium ion battery BT provides boosts to+5V through boost chip U3 is that described single-chip microcomputer 1, photoelectrical coupler 2, wireless communication chips 4, level shifting circuit 6 and warning circuit 7 are powered.When 220V line voltage without electricity and battery electric quantity is low time, described single-chip microcomputer 1 sends the low alarming short message of a battery electric quantity by wireless communication chips 4 and wireless network and reminds user for battery charging or replacing battery.Wherein, described diode D as fly-wheel diode, in order to play the effect of decrease uptake inverse electromotive force when described coil unit M power-off.
Wherein, user is arranged the some liquid level signal output terminal installation sites stored in single-chip microcomputer 1 and telephone number via described level transferring chip U4 by host computer, and then carries out required change to the parameter of some liquid level sensors 3 and the telephone number of transmission alarming short message.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the utility model is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (10)
1. a liquid level alarm device, comprise single-chip microcomputer, photoelectrical coupler, liquid level sensor and wireless communication chips, it is characterized in that: described single-chip microcomputer is provided with digital signal input end, first reception of wireless signals end and the first wireless signal transmission end, described photoelectrical coupler comprises liquid level signal input end and liquid level signal output terminal, described wireless communication chips comprises the second reception of wireless signals end and the second wireless signal transmission end, described second reception of wireless signals end and the second wireless signal transmission end are electrically connected described first wireless signal transmission end and the first reception of wireless signals end respectively, described liquid level sensor is electrically connected liquid level signal input end, described liquid level signal output terminal is electrically connected digital signal input end.
2. liquid level alarm device as claimed in claim 1, it is characterized in that: described liquid level alarm device also comprises level shifting circuit, described single-chip microcomputer is also provided with digital signal reception end and digital signal transmission end, described level shifting circuit comprises level transferring chip, described level transferring chip comprises the first level input, first level output end, second electrical level input end and second electrical level output terminal, described first level input and second electrical level output terminal are electrically connected a host computer respectively, described first level output end and second electrical level input end are electrically connected described digital signal reception end and digital signal transmission end respectively.
3. liquid level alarm device as claimed in claim 2, it is characterized in that: described photoelectrical coupler also comprises the first link, described liquid level sensor is plugged on one first connector, described first connector comprises the second link and the 3rd link, described second link is electrically connected liquid level signal input end, described 3rd link is electrically connected the first link, and described liquid level signal output terminal is electrically connected digital signal input end.
4. liquid level alarm device as claimed in claim 3, is characterized in that: described first level input is electrically connected the level signal transmission end of one second connector, and described second electrical level output terminal is electrically connected the level signal receiving end of the second connector.
5. liquid level alarm device as claimed in claim 4, it is characterized in that: described liquid level alarm device also comprises feed circuit, described feed circuit comprise alternating voltage conversion chip, charging chip and boost chip, the input end of described alternating voltage conversion chip connects line voltage, the output terminal of described alternating voltage conversion chip is electrically connected described charging chip, and described charging chip and boost chip are electrically connected a lithium ion battery respectively.
6. liquid level alarm device as claimed in claim 5, it is characterized in that: described liquid level alarm device also comprises warning circuit, described warning circuit comprises triode and relay, described relay comprises coil unit and switch element, described single-chip microcomputer also comprises an alarm signal output ends, the base stage of described triode is electrically connected described alarm signal output ends, the emitter of described triode is electrically connected the negative electrode of a diode, the plus earth of described diode, one end of described switch element is electrically connected the fire wire output end of line voltage, the other end of described switch element is electrically connected the zero line output terminal of line voltage.
7. liquid level alarm device as claimed in claim 6, is characterized in that: described triode is a NPN type triode.
8. as the liquid level alarm device in claim 4 to 7 as described in any one, it is characterized in that: described second connector is a RS232 interface.
9. as the liquid level alarm device in claim 5 to 7 as described in any one, it is characterized in that: described lithium ion battery comprises two electric battery.
10. liquid level alarm device as claimed in any of claims 1 to 7 in one of claims, is characterized in that: the level switch of each liquid level sensor is arranged a water level preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520614091.8U CN204881757U (en) | 2015-08-14 | 2015-08-14 | Liquid level alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520614091.8U CN204881757U (en) | 2015-08-14 | 2015-08-14 | Liquid level alarm device |
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| Publication Number | Publication Date |
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| CN204881757U true CN204881757U (en) | 2015-12-16 |
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| CN201520614091.8U Active CN204881757U (en) | 2015-08-14 | 2015-08-14 | Liquid level alarm device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006501A (en) * | 2018-11-06 | 2019-07-12 | 柳工常州机械有限公司 | Bull-dozer level monitoring control circuit and its monitoring method with anti-error correcting capability |
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2015
- 2015-08-14 CN CN201520614091.8U patent/CN204881757U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006501A (en) * | 2018-11-06 | 2019-07-12 | 柳工常州机械有限公司 | Bull-dozer level monitoring control circuit and its monitoring method with anti-error correcting capability |
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