CN105157887A - Intelligent pressure transmitter having alarming function - Google Patents
Intelligent pressure transmitter having alarming function Download PDFInfo
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- CN105157887A CN105157887A CN201510588178.7A CN201510588178A CN105157887A CN 105157887 A CN105157887 A CN 105157887A CN 201510588178 A CN201510588178 A CN 201510588178A CN 105157887 A CN105157887 A CN 105157887A
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Abstract
Provided is an intelligent pressure transmitter having an alarming function. The intelligent pressure transmitter comprises a pressure sensor, an analog-digital converter, a microprocessor, a GPRS communication module, an alarming circuit, a temperature difference power generation member and an energy storage member. The pressure sensor converts pressure signals to be tested into analog voltage signals; the analog-digital converter converts the analog voltage signals into digital voltage signals; the microprocessor converts the digital voltage signals into pressure to be tested and generates a first control signal and a second control signal according to the pressure to be tested; the GPRS communication module sends the pressure to be tested to a remote monitoring center; the alarming circuit carries out alarming when receiving the first control signal or the second control signal; the temperature difference power generation member generates electric energy according to temperature difference change of the two surfaces of a well cover; and the energy storage member stores the electric energy generated by the temperature difference power generation member. The intelligent pressure transmitter having the alarming function carries out power supply by utilizing the temperature difference between the two surfaces of the well cover without replacing a battery.
Description
Technical field
The present invention relates to sensor detecting field, particularly a kind of intelligent pressure transmitter with warning function.
Background technology
Transmitter is most important field instrument in industrial stokehold, can be used for the measurement of the many kinds of parameters such as pressure, differential pressure, temperature, liquid level and flow.It is detected process variable by sensor, after conversion, become 4mA ~ 20mA standard current signal, or directly exchanges information by digital communication mode and pulpit.Therefore, transmitter is widely used in the every field of Chinese national economy, as every field and departments such as power station, chemical industry, metallurgy, petrochemical industry, weaving, food, water conservancy, the energy, Aeronautics and Astronautics, environmental protection, automobile, transport, heat supply network, building water and heat provision and municipal sewage treatments.
Pressure unit is a kind of sensor the most conventional in industrial practice, it is widely used in various industrial automatic control environment, relates to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline.Traditional pressure unit adopts disposable battery to power, and disposable battery can not meet the needs of pressure unit long-term work because of finite energy, thus needs periodic replacement.And in actual applications, industry wireless network node has the features such as quantity is many, distributed areas are wide, deployed environment is complicated, for some region (as battlefield, animal population, material internal etc.) that personnel can not directly arrive, disposable battery can not often be changed.In order to avoid often changing the high cost and environmental pollution that battery causes, in prior art to adopt solar panels sun power to be converted to electric energy be that wireless pressure transmitter is powered more.But, for the pressure unit installed in underground situations in pipes, because it is in the irradiation that cannot accept sunlight in dark environment, still can only rely on and manually change battery.
Summary of the invention
To be solved by this inventionly be mounted in that pressure unit in underground pipeline adopt powered battery to need often to change cost that battery causes is high, problem not environmentally.
For solving the problem, the invention provides a kind of intelligent pressure transmitter with warning function, comprising pressure transducer, analog to digital converter, microprocessor, GPRS communication module, warning circuit, thermo-electric generation element and energy-storage travelling wave tube; Described pressure transducer is suitable for testing pressure signal to be converted to analog voltage signal; Described analog to digital converter is connected with described pressure transducer, is suitable for described analog voltage signal to be converted to digital voltage signal; Described microprocessor is connected with described analog to digital converter, described digital voltage signal is suitable for be converted to testing pressure value, and produce the first control signal when described testing pressure value is less than the first predetermined threshold value, produce the second control signal when described testing pressure value is greater than the second predetermined threshold value, described first predetermined threshold value is less than described second predetermined threshold value; Described GPRS communication module is connected with described microprocessor, is suitable for, by GPRS network, described testing pressure value is sent to remote monitoring center; Described warning circuit is connected with described microprocessor, is suitable for reporting to the police when receiving described first control signal or described second control signal; Described thermo-electric generation element is arranged on well lid, is suitable for the temperature difference change surperficial according to well lid two and produces electric energy; Described energy-storage travelling wave tube is connected with described thermo-electric generation element, described pressure transducer, described analog to digital converter, described microprocessor, described GPRS communication module and described warning circuit, be suitable for the electric energy storing the generation of described thermo-electric generation element, and power to described pressure transducer, described analog to digital converter, described microprocessor, described GPRS communication module and described warning circuit.
Optionally, described energy-storage travelling wave tube is super capacitor.
Optionally, described thermo-electric generation element is thermo-electric generation sheet.
Optionally, described first control signal and described second control signal are high level signal, and described warning circuit comprises current-limiting resistance, light emitting diode, loudspeaker, a NPN triode and the 2nd NPN triode, one end of described current-limiting resistance connects one end of described loudspeaker and is suitable for receiving supply voltage, the other end of described current-limiting resistance connects the anode of described light emitting diode, the negative electrode of described light emitting diode connects the collector of a described NPN triode, the base stage of a described NPN triode is suitable for receiving described first control signal, the emitter of a described NPN triode and the grounded emitter of described 2nd NPN triode, the base stage of described 2nd NPN triode is suitable for receiving described second control signal, the collector of described 2nd NPN triode connects the other end of described loudspeaker.Described warning circuit is reported to the police when testing pressure value is less than the first predetermined threshold value or is greater than the second predetermined threshold value, and in two kinds of situations, alarm form is different, is convenient to maintenance personal and judges that pressure is excessive or too small fast.
Optionally, described in there is warning function intelligent pressure transmitter also comprise the GPS module be connected with described microprocessor and described energy-storage travelling wave tube, described energy-storage travelling wave tube is also suitable for powering to described GPS module; Described GPS module is suitable for the geographic position of positioning pressure transmitter to obtain positional information, and described microprocessor is also suitable for described positional information to be forwarded to described GPRS communication module.By arranging described GPS module, remote monitoring center accurately can know the geographic position of pressure unit, can prevent the accident of pressure unit from moving, and can judge fast when pressure unit breaks down.
Compared with prior art, the present invention has the following advantages:
The intelligent pressure transmitter with warning function provided by the invention, the thermo-electric generation element be arranged on well lid is utilized to be generated electricity by the temperature difference that well lid two is surperficial, and by the power storage of acquisition in energy-storage travelling wave tube to power to other modules, thus solve adopt powered battery to need manually often to change the cost caused is high, problem not environmentally.Further, the intelligent pressure transmitter with warning function provided by the invention can field monitoring testing pressure, reports to the police when testing pressure value exceeds preset range.
Accompanying drawing explanation
Fig. 1 is the structural representation with the intelligent pressure transmitter of warning function of an embodiment of the present invention;
Fig. 2 is the circuit diagram of the warning circuit of the embodiment of the present invention;
Fig. 3 is the structural representation with the intelligent pressure transmitter of warning function of the another kind of embodiment of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Fig. 1 is the structural representation with the intelligent pressure transmitter of warning function of an embodiment of the present invention, the described intelligent pressure transmitter with warning function is installed in underground situations in pipes, and it comprises pressure transducer 11, analog to digital converter 12, microprocessor 13, GPRS communication module 14, warning circuit 15, thermo-electric generation element 16 and energy-storage travelling wave tube 17.
Particularly, described pressure transducer 11 is suitable for testing pressure signal to be converted to analog voltage signal.Described analog to digital converter 12 is connected with described pressure transducer 11, is suitable for described analog voltage signal to be converted to digital voltage signal.Described microprocessor 13 is connected with described analog to digital converter 12, described digital voltage signal is suitable for be converted to testing pressure value, and produce the first control signal when described testing pressure value is less than the first predetermined threshold value, produce the second control signal when described testing pressure value is greater than the second predetermined threshold value.Described first predetermined threshold value is less than described second predetermined threshold value, and the occurrence of described first predetermined threshold value and described second predetermined threshold value sets according to the actual requirements.Described GPRS communication module 14 is connected with described microprocessor 13, is suitable for, by GPRS network, described testing pressure value is sent to remote monitoring center.It should be noted that, described pressure transducer 11, described analog to digital converter 12, described microprocessor 13 and described GPRS communication module 14 are existing circuit structure, no longer too much illustrate at this.
Described warning circuit 15 is connected with described microprocessor 14, is suitable for reporting to the police when receiving described first control signal or described second control signal.It should be noted that, described first control signal can be high level also can be low level, and described second control signal can be high level can be also low level, can arrange in described microprocessor 14 according to the actual requirements.In the present embodiment, be high level signal for described first control signal and described second control signal, a kind of physical circuit of described warning circuit 15 is provided.
Fig. 2 is the circuit diagram of described warning circuit 15, and described warning circuit 15 comprises current-limiting resistance R1, light emitting diode D1, loudspeaker B1, a NPN triode Q1 and the 2nd NPN triode Q2.One end of described current-limiting resistance R1 connects one end of described loudspeaker B1 and is suitable for receiving supply voltage VCC, described supply voltage VCC is provided by described energy-storage travelling wave tube 17, the other end of described current-limiting resistance R1 connects the anode of described light emitting diode D1, the negative electrode of described light emitting diode D1 connects the collector of a described NPN triode Q1, the base stage of a described NPN triode Q1 is suitable for receiving described first control signal S1, the emitter of a described NPN triode Q1 and the grounded emitter of described 2nd NPN triode Q2, the base stage of described 2nd NPN triode Q2 is suitable for receiving described second control signal S2, the collector of described 2nd NPN triode Q2 connects the other end of described loudspeaker B1.In the present embodiment, carry out luminous alarm when described testing pressure value is less than the first predetermined threshold value, carry out sounding alarm when described testing pressure value is greater than the second predetermined threshold value, being convenient to maintenance personal, to distinguish pressure be at the scene excessive or too small.Certainly, also can be set to carry out sounding alarm when described testing pressure value is less than the first predetermined threshold value, described testing pressure value carries out luminous alarm when being greater than the second predetermined threshold value, the embodiment of the present invention is not construed as limiting this.
Described thermo-electric generation element 16 is arranged on well lid, is suitable for the temperature difference change surperficial according to well lid two and produces electric energy.In manhole cover system, because well lid upper surface is exposed in air, easily change with the change of ambient temperature; And the space of well lid lower surface is the same with the underground space, temperature variation slowly, very easily produces the temperature difference at the upper surface of well lid and the lower surface of well lid.The one side of described thermo-electric generation element 16 is mounted on temperature and holds labile well lid upper surface, one side is placed in the not labile underground air of temperature, then can produce electric energy.Described energy-storage travelling wave tube 17 is connected with described thermo-electric generation element 16, described pressure transducer 11, described analog to digital converter 12, described microprocessor 13 and described GPRS communication module 14, be suitable for the electric energy storing the generation of described thermo-electric generation element 16, and power to described pressure transducer 11, described analog to digital converter 12, described microprocessor 13 and described GPRS communication module 14.In the present embodiment, described thermo-electric generation element 16 is thermo-electric generation sheet, and described energy-storage travelling wave tube 17 is super capacitor.
Fig. 3 is the structural representation with the intelligent pressure transmitter of warning function of the another kind of embodiment of the present invention.Compared with the embodiment that Fig. 1 is corresponding, the intelligent pressure transmitter with warning function of the present embodiment also comprises the GPS module 31 be connected with microprocessor 13 and energy-storage travelling wave tube 17, and described energy-storage travelling wave tube 17 is also suitable for powering to described GPS module 31.Described GPS module 31 is suitable for the geographic position of positioning pressure transmitter to obtain positional information, and described positional information is sent to described microprocessor 13, by described microprocessor 13, described positional information is forwarded to GPRS communication module 14, described positional information is wirelessly sent to remote control center by described GPRS communication module 14.By arranging described GPS module 31, remote monitoring center can know the geographic position of pressure unit exactly, can prevent the accident of pressure unit from moving.Further, remote monitoring center is monitored multiple pressure unit usually simultaneously, when any one pressure unit breaks down wherein, and can the pressure unit that breaks down of quick position by described GPS module 31.
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (5)
1. there is an intelligent pressure transmitter for warning function, it is characterized in that, comprise pressure transducer, analog to digital converter, microprocessor, GPRS communication module, warning circuit, thermo-electric generation element and energy-storage travelling wave tube;
Described pressure transducer is suitable for testing pressure signal to be converted to analog voltage signal;
Described analog to digital converter is connected with described pressure transducer, is suitable for described analog voltage signal to be converted to digital voltage signal;
Described microprocessor is connected with described analog to digital converter, described digital voltage signal is suitable for be converted to testing pressure value, and produce the first control signal when described testing pressure value is less than the first predetermined threshold value, produce the second control signal when described testing pressure value is greater than the second predetermined threshold value, described first predetermined threshold value is less than described second predetermined threshold value;
Described GPRS communication module is connected with described microprocessor, is suitable for, by GPRS network, described testing pressure value is sent to remote monitoring center;
Described warning circuit is connected with described microprocessor, is suitable for reporting to the police when receiving described first control signal or described second control signal;
Described thermo-electric generation element is arranged on well lid, is suitable for the temperature difference change surperficial according to well lid two and produces electric energy;
Described energy-storage travelling wave tube is connected with described thermo-electric generation element, described pressure transducer, described analog to digital converter, described microprocessor, described GPRS communication module and described warning circuit, be suitable for the electric energy storing the generation of described thermo-electric generation element, and power to described pressure transducer, described analog to digital converter, described microprocessor, described GPRS communication module and described warning circuit.
2. the intelligent pressure transmitter with warning function according to claim 1, is characterized in that, described energy-storage travelling wave tube is super capacitor.
3. the intelligent pressure transmitter with warning function according to claim 1, is characterized in that, described thermo-electric generation element is thermo-electric generation sheet.
4. the intelligent pressure transmitter with warning function according to any one of claims 1 to 3, it is characterized in that, described first control signal and described second control signal are high level signal, and described warning circuit comprises current-limiting resistance, light emitting diode, loudspeaker, a NPN triode and the 2nd NPN triode;
One end of described current-limiting resistance connects one end of described loudspeaker and is suitable for receiving supply voltage, the other end of described current-limiting resistance connects the anode of described light emitting diode, the negative electrode of described light emitting diode connects the collector of a described NPN triode, the base stage of a described NPN triode is suitable for receiving described first control signal, the emitter of a described NPN triode and the grounded emitter of described 2nd NPN triode, the base stage of described 2nd NPN triode is suitable for receiving described second control signal, the collector of described 2nd NPN triode connects the other end of described loudspeaker.
5. the intelligent pressure transmitter with warning function according to claim 4, is characterized in that, also comprises the GPS module be connected with described microprocessor and described energy-storage travelling wave tube, and described energy-storage travelling wave tube is also suitable for powering to described GPS module;
Described GPS module is suitable for the geographic position of positioning pressure transmitter to obtain positional information, and described microprocessor is also suitable for described positional information to be forwarded to described GPRS communication module.
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| CN201510588178.7A CN105157887A (en) | 2015-09-16 | 2015-09-16 | Intelligent pressure transmitter having alarming function |
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| CN201510588178.7A CN105157887A (en) | 2015-09-16 | 2015-09-16 | Intelligent pressure transmitter having alarming function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107063564A (en) * | 2017-04-07 | 2017-08-18 | 国网四川省电力公司 | The few oily equipment monitoring system of electric power |
| CN108051632A (en) * | 2017-12-19 | 2018-05-18 | 西安安森智能仪器股份有限公司 | A kind of method of transmitter load supplying and two-wire system 4-20mA transmitter circuits |
| CN112050994A (en) * | 2020-11-02 | 2020-12-08 | 南京沃天科技股份有限公司 | Wireless pressure transmitter for detecting water pressure in pipe |
| CN112729574A (en) * | 2021-01-08 | 2021-04-30 | 国网山东省电力公司龙口市供电公司 | Conductor heating automatic monitoring device |
| CN112946458A (en) * | 2021-02-22 | 2021-06-11 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
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| CN104132674A (en) * | 2014-07-31 | 2014-11-05 | 西安交通大学 | Multi-signal output intelligent pressure transmitter |
| CN104700595A (en) * | 2015-03-11 | 2015-06-10 | 成都中兢伟奇科技有限责任公司 | Intelligent pressure transmitter based on mobile phone short message |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107063564A (en) * | 2017-04-07 | 2017-08-18 | 国网四川省电力公司 | The few oily equipment monitoring system of electric power |
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| CN112050994A (en) * | 2020-11-02 | 2020-12-08 | 南京沃天科技股份有限公司 | Wireless pressure transmitter for detecting water pressure in pipe |
| CN112729574A (en) * | 2021-01-08 | 2021-04-30 | 国网山东省电力公司龙口市供电公司 | Conductor heating automatic monitoring device |
| CN112946458A (en) * | 2021-02-22 | 2021-06-11 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
| CN112946458B (en) * | 2021-02-22 | 2024-01-12 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
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