CN105517198A - Wireless sensing network system - Google Patents
Wireless sensing network system Download PDFInfo
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- CN105517198A CN105517198A CN201610072450.0A CN201610072450A CN105517198A CN 105517198 A CN105517198 A CN 105517198A CN 201610072450 A CN201610072450 A CN 201610072450A CN 105517198 A CN105517198 A CN 105517198A
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- sensing unit
- wireless
- network system
- circuit
- wireless sensing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a wireless sensing network system. The system comprises a wireless controller and multiple wireless sensing units; each wireless sensing unit comprises a sensing unit, a conditioning circuit, an AD acquisition circuit, a sensing unit CPU, a wireless receiving and transmitting circuit and a power source; each sensing unit is connected with the corresponding wireless receiving and transmitting circuit through the corresponding conditioning circuit, the corresponding AD acquisition circuit and the corresponding sensing unit CPU in sequence; each power source directly supplies power to the corresponding sensing unit CPU; each sensing unit and the corresponding conditioning circuit supply power through IO ports of the corresponding sensing unit CPU; the wireless receiving and transmitting circuits of all the wireless sensing units are in communication connection with the wireless controller. By means of the wireless sensing network system, measuring points are convenient to adjust, and energy consumption is low.
Description
Technical field
The present invention relates to a kind of wireless sensing network system.
Background technology
In industrial monitoring and automated system, need the temperature of extensive use sensors towards ambient, pressure, vibration, hot-fluid etc. to carry out Real-Time Monitoring.Traditional detection mode is by arranging transducer at each test point, and wired data transfer is carried out in wiring, although achieve automation, but still there is following defect: (1) wired connection mode, the fault of broken string often occurs, thus affects surveying work; (2) automation is implemented in practice, after often running into the project implementation, has and needs to increase or adjustment measuring point, now, have and need rewiring, extremely bother; (3) for rotation, mobile class measuring object, wired sensor has been difficult to measurement; (4) at harbour, chemical industry, the field such as space flight, installation work is very difficult, connects up in high-altitude, danger, small space, and operation easier and cost are all very high.Therefore consider to adopt wireless sensing device to form network system, carrying out real time data acquisition and transmission, is a break-through point of prior art.
And existing wireless sensing device, by sensing unit collection signal, after carrying out filtering, amplification process by modulate circuit, enter AD Acquisition Circuit and complete the conversion of analog signal to digital signal, signal after conversion enters control circuit, launches after realizing digital coding process through wireless transceiver circuit.As shown in Figure 1, for wireless pressure sensor, need directly to be powered to pressure sensor (sensing unit), modulate circuit and control circuit (CPU) by power supply, such deficiency is obvious, when not needing sampling, sensing unit and modulate circuit are also energized always, cause the waste of the finite battery energy, virtually add unit energy consumption, high to power requirement.
Simultaneously, in transducer low power dissipation design, when transducer is in deep sleep mode, need by special circuit, it to be waken up from deep sleep mode, traditional method of operation mainly contains increase mechanical switch and carrys out wake-up, or increases Hall element, produces magnetic field by magnet steel, trigger node closes, and realizes waking up.These implementations, or be direct mechanical actuating procedure, or need closely to trigger (within 2cm), after wireless sensing device is installed, when needing to carry out parameter configuration and pattern switching, these traditional approachs just seem very inconvenient.
Summary of the invention
The object of the invention is to solve the defect existed in prior art, providing a kind of convenience to adjust measuring point and the little wireless sensing network system of energy consumption.
In order to achieve the above object, the invention provides a kind of wireless sensor network system, comprise wireless controller and multiple wireless sensing unit; Each wireless sensing unit includes sensing unit, modulate circuit, AD Acquisition Circuit, sensing unit CPU, wireless transceiver circuit and power supply; Sensing unit is connected with wireless transceiver circuit by modulate circuit, AD Acquisition Circuit, sensing unit CPU successively; Power supply is directly powered to sensing unit CPU; Sensing unit, modulate circuit are powered by the IO port of sensing unit CPU; The wireless transceiver circuit of each wireless sensing unit is all connected by communication with wireless controller.
The IO port of above-mentioned sensing unit CPU is connected with modulate circuit with sensing unit respectively by after voltage stabilizing chip.
Wherein, wireless sensing unit also comprises voltage stabilizing chip; Wireless sensing unit has mode of operation, sleep pattern, deep sleep mode Three models; When wireless sensing unit is in mode of operation, the IO port output voltage of sensing unit CPU, after the voltage stabilizing of voltage stabilizing chip, powers to sensing unit and modulate circuit; When wireless sensing unit is in sleep pattern and deep sleep mode, the IO port of sensing unit CPU turns off and exports.
Above-mentioned wireless sensing unit also comprises RFID circuit; Wireless sensing network system also comprises wireless handheld Radio Beacon; The RFID circuit of wireless sensing unit is connected with sensing unit CPU; The RFID circuit of each wireless sensing unit all communicates with wireless handheld Radio Beacon (through radio frequency) and is connected.
When wireless sensing unit is in deep sleep mode, wake operation is realized by wireless handheld Radio Beacon, concrete operating process is: launch RFID signal by wireless handheld Radio Beacon, RFID circuit on wireless sensing device receives this RFID wake-up signal, when signal accumulation is to certain energy rank, RFID circuit trigger switch closes, this closure signal is identified by sensing unit CPU, by sensing unit CPU process wake operation, realize each wireless sensing unit by the switching of deep sleep mode to mode of operation.
Power acquisition battery.
Sensing unit adopts pressure sensor, temperature sensor, vibrating sensor, heat flow transducer, acceleration transducer or humidity sensor.
Wireless sensing network system of the present invention also comprises central apparatus; Central apparatus and wireless controller are connected by communication.
Wireless controller comprises control end CPU and control end wireless transceiver circuit; Control end CPU is connected by communication by control end wireless transceiver circuit and sensing unit CPU.
Wherein, central apparatus adopts server.Central apparatus is connected with wireless controller by internet.
The present invention has the following advantages compared to existing technology: form network system by multiple wireless sensing unit, carry out data wireless transmission, without the need to wiring, adjust convenient, and the effective measurement (comprising rotation, mobile class testing object) to all kinds of tested object can be completed; Realize each sensing unit node parameter configuration in networking process by wireless handheld Radio Beacon, network operating state switches; Carry out short distance wireless data reception, process by wireless controller, and export central apparatus at a distance to by internet and carry out data storage, convenient remote monitoring.Each wireless sensing unit utilizes the IO port output voltage of sensing unit CPU to sensing unit and modulate circuit, controls the power supply of wireless sensing device under different working modes, realizes energy-saving effect; Direct employing powered battery, save power-supply wiring, installation and maintenance are very convenient, simultaneously in conjunction with the switching of sensing unit CPU powering mode, achieve the maximum using of battery electric quantity, effectively extend the physical life of battery.Realize Remote Wake Up when deep sleep mode is in device by wireless handheld Radio Beacon and RFID circuit, switch convenient to the mode of operation of wireless sensing device.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing wireless pressure sensing device;
Fig. 2 is the structural representation of wireless sensing device of the present invention;
Fig. 3 is the structural representation of wireless sensing network system of the present invention.
In figure, 1-wireless handheld Radio Beacon.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 3, wireless sensing network system of the present invention comprises multiple wireless sensing unit (being respectively temperature sensing unit, pressure sensitive unit, vibrating sensing unit, thermal-flow sensor unit shown in the present embodiment), is divided into each measuring point place; And wireless controller, wireless handheld Radio Beacon and central apparatus.Wherein wireless handheld Radio Beacon adopts the hand-held Radio Beacon of JWX1S-HS type of high China Tech skill; Central apparatus adopts serial communication server, is specially MoxaNPort5430.Wireless handheld Radio Beacon 1, in networking process, realizes configuring the node parameter of each wireless sensing unit by RFID circuit.Each wireless sensing unit is transferred to central apparatus by wireless controller after carrying out data acquisition.
As shown in Figure 2, each wireless sensing unit includes sensing unit, modulate circuit, AD Acquisition Circuit, sensing unit CPU, RFID circuit, wireless transceiver circuit, battery.Sensing unit adopts pressure sensor, temperature sensor, vibrating sensor, heat flow transducer, (in this example, temperature sensing unit adopts temperature sensor for acceleration transducer or humidity sensor, pressure sensitive unit adopts pressure sensor, vibrating sensing unit adopts vibrating sensor, thermal-flow sensor unit adopts heat flow transducer), carry out pressure, temperature, vibration, hot-fluid, the collection of acceleration or moisture signal, the signal collected carries out filtering through conditioning modulate circuit, after amplifying process, enter AD Acquisition Circuit and complete the conversion of analog signal to digital signal, digital signal after conversion enters sensing unit CPU, launch through wireless transceiver circuit after realizing digital coding process.Composition graphs 3, the signal that each wireless sensing unit sends is received by the control end wireless transceiver circuit of wireless controller, after control end CPU by internet transmissions to central apparatus.The supply power mode of each wireless sensing unit of the present invention is as follows: sensing unit CPU is directly powered by battery, and sensing unit and modulate circuit are powered after the voltage stabilizing of voltage stabilizing chip by the IO port output voltage of sensing unit CPU.Wireless sensing device of the present invention has Three models: mode of operation, sleep pattern and deep sleep mode, mode of operation is in when sensing unit CPU controls sensing unit sampling and wireless transceiver circuit transmitting by instruction, all the other times are in sleep pattern, when wireless sensing device need for a long time standby do not work power saving time, by device, it is switched to deep sleep mode (under sleep pattern, the sleep timer work of sensing unit CPU inside, timing wake-up wireless sensing device checks whether to be needed to carry out data acquisition or transmission, is in work ready state; Under deep sleep mode, the sleep timer of sensing unit CPU inside is also in closed condition, and the interface end work be only connected with RFID circuit, for receiving wake-up signal).When sensing unit carries out data sampling, the IO port output voltage of sensing unit CPU, after the voltage stabilizing of voltage stabilizing chip, is powered to sensing unit and modulate circuit; When not needing data sampling, IO port can turn off output, reduces the electrical source consumption of sensing unit and modulate circuit.After such enforcement energy conservation, sensing unit CPU is only in mode of operation when sampling and launch, power consumption is relatively higher, and front stage circuits (sensing unit and modulate circuit) is also only in power modes when sampling, all the other time periods, sensing unit CPU is in park mode, and front stage circuits to be cut off the electricity supply supply by IO port, realizes power savings.When wireless sensing unit is in deep sleep mode, need to be waken up, by wireless handheld Radio Beacon 1 transmitting RF ID wake-up signal, this RFID wake-up signal is received by RFID circuit, when signal accumulation is to certain energy rank, RFID circuit trigger switch closes, and identifies this closure signal by sensing unit CPU, by sensing unit CPU process wake operation, realize wireless sensing device by the switching of deep sleep mode to mode of operation.
Claims (10)
1. a wireless sensor network system, is characterized in that: described wireless sensor network system comprises wireless controller and multiple wireless sensing unit; Described wireless sensing unit comprises sensing unit, modulate circuit, AD Acquisition Circuit, sensing unit CPU, wireless transceiver circuit and power supply; Described sensing unit is connected with wireless transceiver circuit by modulate circuit, AD Acquisition Circuit, sensing unit CPU successively; Described power supply is directly powered to sensing unit CPU; Described sensing unit, modulate circuit are powered by the IO port of described sensing unit CPU; The wireless transceiver circuit of described multiple wireless sensing unit is all connected by communication with wireless controller.
2. wireless sensing network system according to claim 1, is characterized in that: the IO port of described sensing unit CPU is connected with modulate circuit with sensing unit respectively by after voltage stabilizing chip.
3. wireless sensing network system according to claim 2, is characterized in that: described wireless sensing unit also comprises voltage stabilizing chip; Described wireless sensing unit has mode of operation, sleep pattern, deep sleep mode Three models; When wireless sensing unit is in mode of operation, the IO port output voltage of described sensing unit CPU, after the voltage stabilizing of described voltage stabilizing chip, powers to sensing unit and modulate circuit; When wireless sensing unit is in sleep pattern and deep sleep mode, the IO port of described sensing unit CPU turns off and exports.
4. wireless sensing network system according to claim 3, is characterized in that: described wireless sensing unit also comprises RFID circuit; Described wireless sensing network system also comprises wireless handheld Radio Beacon; The RFID circuit of described wireless sensing unit is connected with described sensing unit CPU; The RFID circuit of described wireless sensing unit all communicates with wireless handheld Radio Beacon and is connected.
5., according to the arbitrary described wireless sensing network system of claims 1 to 3, it is characterized in that: described power acquisition battery.
6., according to the arbitrary described wireless sensing network system of Claims 1-4, it is characterized in that: described sensing unit adopts pressure sensor, temperature sensor, vibrating sensor, heat flow transducer, acceleration transducer or humidity sensor.
7., according to the arbitrary described wireless sensing network system of Claims 1-4, it is characterized in that: described wireless sensing network system also comprises central apparatus; Described central apparatus and wireless controller are connected by communication.
8., according to the arbitrary described wireless sensing network system of Claims 1-4, it is characterized in that: described wireless controller comprises control end CPU and control end wireless transceiver circuit; Described control end CPU is connected by communication by control end wireless transceiver circuit and sensing unit CPU.
9. wireless sensing network system according to claim 7, is characterized in that: described central apparatus adopts server.
10. wireless sensing network system according to claim 7, is characterized in that: described central apparatus is connected with wireless controller by internet.
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| CN201610072450.0A CN105517198A (en) | 2016-02-02 | 2016-02-02 | Wireless sensing network system |
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| CN201610072450.0A CN105517198A (en) | 2016-02-02 | 2016-02-02 | Wireless sensing network system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105953935A (en) * | 2016-06-27 | 2016-09-21 | 南通市建筑科学研究院有限公司 | Temperature hot-fluid wireless itineration detector |
| CN112037494A (en) * | 2020-08-05 | 2020-12-04 | 中车工业研究院有限公司 | Wireless vibration data acquisition device |
| CN112506092A (en) * | 2020-11-03 | 2021-03-16 | 柳奇 | Automatic control data transmission system for chemical, petrochemical and pharmaceutical enterprises |
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2016
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| CN105953935A (en) * | 2016-06-27 | 2016-09-21 | 南通市建筑科学研究院有限公司 | Temperature hot-fluid wireless itineration detector |
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