CN101275957A - Wireless temperature and humidity intelligent sensor - Google Patents
Wireless temperature and humidity intelligent sensor Download PDFInfo
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- CN101275957A CN101275957A CNA2006100224667A CN200610022466A CN101275957A CN 101275957 A CN101275957 A CN 101275957A CN A2006100224667 A CNA2006100224667 A CN A2006100224667A CN 200610022466 A CN200610022466 A CN 200610022466A CN 101275957 A CN101275957 A CN 101275957A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention discloses a wireless humiture intelligent sensor which forms a sensing system together with an upper machine. The invention is characterized in that the sensor comprises a sensor module, a micro-processor module, a wireless receiving and transmitting module, a serial port communication module and a power module. The core part is the wireless receiving and transmitting module which comprises the following elements: a ZigBee wireless module main chip MC13192, a 16.000MHz crystal oscillator, a radio frequency unit RF transmitting and receiving circuit and a 2.4G PCB double pole antenna. The invention has the following advantages: 1) wireless property; 2) flexibility; 3) low power consumption; and 4) usability.
Description
Technical field
The present invention relates to a kind of Temperature Humidity Sensor, be specifically related to a kind of wireless temperature and humidity intelligent sensor.
Background technology
Humiture and industrial and agricultural production and people's lives are closely related, and as warehouse, farmland, production run, humidity is crossed conference and caused that grain goes mouldy and goes bad; Temperature variation can influence grain quality; Exact instrument, semiconductor devices can be crossed wet performance because of excess temperature and reduce.In addition, along with the raising of people's quality of life, the high request of indoor environment is also needed real-time monitoring to humiture.
Temperature Humidity Sensor in the past is that wired mode transmits data mostly, and circuit is redundant complicated, be not suitable for most amounts on a large scale and place, and the wiring cost height, the problem of aging of circuit has also influenced its reliability.On the other hand, the desired wireless technology of networked sensor is different from more existing radio network techniques now, and this network does not need too high transfer rate, but in the requirement that the comparison harshness is arranged aspect cost and the power consumption.Chang Yong wireless communication technique comprised WiFi in the past, Bluetooth, UWB etc., the complicated cost height of WiFi equipment, the too big cost of Bluetooth power consumption can fall yet, UWB is owing to most of bandwidth of electric wave is taken by infrastructure such as radio communications, can not arbitrarily use, the electric wave output power of adding UWB will be controlled on the following level of the noise that do not influence other radio communications as far as possible, therefore the ultimate range that can communicate by letter also has only about 10m, and they are not the desirable communication technologys of framework wireless humiture sensor network.
Be similar in order to satisfy that Temperature Humidity Sensor is small-sized like this, the requirement of low-cost equipment Wireless Networking, the ZigBee technology produces also and grows up.The ZigBee technology is to grow up on the IEEE 802.15.4 basis, be up-to-date a kind of closely, low complex degree, low-power consumption, low data rate, two-way wireless communication technology cheaply, can be operated on 2.4GHz (whole world is popular), 868 MHz (Europe is popular) and these three frequency ranges of 915 MHz (U.S. is popular).Its major advantage is as follows:
1) low in energy consumption: under the low power consumption standby mode, common No. 5 dry cells of two joints can use more than 6 months, and this also is the unique advantage that the ZigBee backer is be proud of always;
2) time delay is short: ZigBee should be used as optimization at what time delay had a strict demand, and communication delay and the time delay that activates from dormant state are all very short.Device search time representative value is 30ms, and device activation time representative value is 15ms, and vehicular equipment channel turn-on time is 15ms;
3) cost is low: the ZigBee message transmission rate is low, and agreement is simple, greatly reduces cost;
4) network capacity is big: each ZigBee network can be supported 255 equipment at most, and promptly each ZigBee equipment can be connected with other 254 equipment;
5) reliable operation: in order to improve the reliability of transmission data, ZigBee has adopted carrier sense multiple/conflict to avoid the channel access way and the complete Handshake Protocol of (CSMA/CA).
6) working frequency range is flexible: the frequency range of use is respectively 868MHz (Europe), and 915MHz (U.S.) and 2.4GHz (general) are unlicensed band, need not to apply for the registration of.For China, have only the general frequency range of 2.4GHz to need not application at present.
Because the characteristics and the advantage of ZigBee technology, just embodied its superiority based on the exploitation of the wireless device of ZigBee.At present aspect wireless senser, have patent " Bluetooth wireless transducer " based on the wireless senser aspect of Bluetooth technology (number of patent application: 2003105080.9), but be based on the ZigBee technology, the related news that can be used for the network-enabled intelligent Temperature Humidity Sensor of various complicated flexibly do not appear in the newspapers.
Summary of the invention
Technical matters to be solved by this invention is how a kind of wireless temperature and humidity intelligent sensor is provided, and it has overcome the limitation of wired sensor network, has avoided the shortcoming of the high power consumption of other wireless communication technologys.
First technical matters proposed by the invention is to solve like this: construct a kind of wireless temperature and humidity intelligent sensor, it forms sensor-based system with host computer, it is characterized in that it comprises sensor assembly, microprocessor module, radio receiving transmitting module, serial communication module and power module:
Sensor assembly: sensor is responsible for the humiture information in the acquisition monitoring zone, converts the voltage analog signal of the inner A/D converter of little processing in can sensing range to, and by A/D mouth input microprocessor, products for further is handled;
Microprocessor module: microprocessor is responsible for controlling the operation of whole sensor node, comprises the control of data acquisition, the A/D conversion of humiture data, the precision calibration of data and extraneous together data communication;
Radio receiving transmitting module: wireless communication module adopts ZigBee communication protocol, the radiofrequency signal that the data-modulated that microprocessor is sent becomes the ZigBee agreement to stipulate, launch by antenna, carry out wireless telecommunications to reach, the purpose of exchange of control information and transmitting-receiving image data with other nodes;
Serial port module: the serial communication module makes any one intelligent radio Temperature Humidity Sensor make internal sensor network and outside carry out communication as an interface.
Power module: the present invention is a wireless sensor node, so adopt the high-power battery power supply, and be provided with the low-voltage testing mechanism, if cell voltage is used up soon, the present invention self can send low capacity prompt information, and this information is sent to upper control machine.
The present invention is the equipment of the humiture data automatic collecting in being used for finishing on a large scale, its core technology-ZigBee wireless communication protocol, based on the v1.0 standard,, be the wireless temperature and humidity intelligent sensor that is applicable to multiple complicated occasion in conjunction with the acquisition technique of humiture simulating signal.It has the following advantages:
1) there is not linearity
The present invention uses and has removed impeding of power lead and data line from, need not infrastructure can form the wireless humiture sensor network with complicated installation work, and network size is controlled, Temperature Humidity Sensor node in the network and arbitrarily additions and deletions.
2) dirigibility
The present invention also can use as a Temperature Humidity Sensor separately, directly by the RS-232 output test data.
3) low-power consumption
The present invention adopts the MC13192 chip of Freescale company, has comprised assembly indispensable in 802.15.4 and the ZigBee compatible system in single chip, effectively reduces power consumption, has prolonged the maintenance period of each sensor, has saved the man power and material.
4) availability
The present invention has advantages such as the node cost is low, and network capacity is big, and life cycle is long, can be widely used in temperature, the humidity control of grain reserves warehouse and vegetables and fruits, egg meat storage repository; The temperature humidity control of chamber planting, various brutish plants; The demand of central air conditioner system; The temperature of power house environment, humidity control; Aspects such as the temperature of laboratory environment, humidity control, market outlook are wide
Description of drawings
Fig. 1 is the network structure of wireless temperature and humidity intelligent sensor provided by the present invention;
Fig. 2 is the logic diagram of wireless temperature and humidity intelligent sensor provided by the present invention;
Fig. 3 is the electrical schematic diagram of wireless temperature and humidity intelligent sensor provided by the present invention;
Fig. 4 is the workflow diagram of wireless temperature and humidity intelligent sensor provided by the present invention.
Wherein, 1, the monitored area, 2, sensor node.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
As Fig. 1 by shown in the wireless temperature and humidity intelligent sensor provided by the present invention, there is a wireless humiture sensor that serves as aggregation node to link to each other with upper control machine among the network by RS-232 interface, the information that other wireless humiture sensor then collects oneself in the network is modulated into wireless ZigBee radiofrequency signal, and the mode by multi-hop sends aggregation node to.In same zone, can there be 65535 wireless temperature and humidity intelligent sensors of reaching to work simultaneously at most, constitute a huge wireless humiture sensing system.
Shown in the logic diagram of Fig. 2 wireless temperature and humidity intelligent sensor, with the microprocessor is core, add peripheral sensor module and wired, wireless two kinds of interface modules, and the wireless senser equipment of power module composition, can compatible ZigBee Integrated Development Environment download, debugged program, structure is flexible, finally finish the function of humiture collection, and data are sent to host computer by ZigBee, for the humiture data in monitoring and the collection on a large scale, because its wireless mode, can be convenient, flexible be applied to many environment that can't or be difficult to extensive cable laying.
Shown in Fig. 3 wireless temperature and humidity intelligent sensor electrical schematic diagram, temperature and humidity sensor acquisition ambient temperature and humidity data, to characterize the simulating signal of humiture physical quantity by A/D mouth sampling input microprocessor, be converted to digital signal through A/D, carry out the precision calibration process again, be packaged into the message format of regulation at last, wait to be sent.The success of each transmission data, set LED1 can change the state of light on and off.
The most crucial part of the present invention is the ZigBee radio receiving transmitting module, comprising:
1) ZigBee wireless module master chip: MC13192;
2) 16.000 MHz high-performance crystal oscillators;
3) radio frequency unit RF sends and receiving circuit;
4) high performance 2.4G antenna;
ZigBee wireless module master chip has the digital core of an optimization, helps to reduce the MCU processing power, shortens the performance period; 4 timing comparators can use a MCU that performance is lower, cheap, thereby can reduce cost; Interrupting maintenance service widely makes software development have more dirigibility; Quality of connection detects and makes sensor can know the situation of knowing self, is convenient to safeguard.It links to each other with microprocessor with GP IO mouth by SPI, receives the programmed control in the microprocessor, the data that transmitting-receiving is transmitted by microprocessor.High performance crystal oscillator has guaranteed the correct of radio frequency part circuit sequence.Radio frequency sends and the low damage of receiving circuit assurance radiofrequency signal is transmitted, and makes the signal by this path can not produce too big decay on path, has also guaranteed the impedance matching of antenna front end.In addition, more flexible in order to reduce volume, to make to install and use, the present invention has used the PCB dipole antenna of 2.4G.
Serial port module comprises serial line interface parts and RS-232 physical interface.The former links to each other with microprocessor by the SCI interface, transfers the universal asynchronous receiving-transmitting signal on the microprocessor to meet rs-232 standard differential signal; The latter adopts the physical interface of the single contact pin of 3 pins as this module, with this as the communication interface of the present invention with host computer and other physical equipments.
The present invention has good power source design, can use the wide region dc voltage input of 5V～12V, is converted into+3V voltage through low pressure reduction voltage stabilizing chip, to each device on the plate and the power supply of ZigBee radio receiving transmitting module.The power supply place has picked out two resistance and has carried out dividing potential drop, and with the A/D conversion mouth of voltage after partial signal input microprocessor, the sampling and the judgement of process program are to reach the purpose that low-voltage detects again.During operate as normal, (LED5 among the figure) is bright always for the green LED on the plate, if battery electric quantity is soon used up, then this LED begins flicker, but drops to below the usable range until electric weight, and this LED extinguishes.
Fig. 4 is a workflow diagram of the present invention, can be described below:
This sensor enters dormant state automatically behind system initialization, microprocessor cuts out the function of sensing module and radio-frequency module earlier, enter " being sunk into sleep " state, only keep faint monitoring electric current, after the data transmitting period of setting reaches, timer internal send a look-at-me to microprocessor to wake node up, microprocessor breaks away from dormant state, recovered clock is also opened sensing module and the function of radio-frequency module, whole node is revived and is entered duty, microprocessor receives the detected humiture data of sensing module and carries out A/D conversion and some preliminary data processing, sends into radio receiving transmitting module according to the data layout of setting and is modulated into radiofrequency signal and sends.
Host computer, receives this signal and is modulated into digital quantity input monitoring center again as access node by certain this equipment in the network, carries out the processing and the storage in later stage.
The invention solves following several gordian techniquies:
1) the present invention is the intelligent temperature and humidity sensor of a wired and wireless double nip, and wireline interface meets rs-232 standard, and wave point satisfies the ZigBee agreement;
2) the present invention can realize the networked control of temperature and humidity;
3) the present invention can realize the wireless penetration monitoring of temperature and humidity;
The present invention is a low power consuming devices, can carry out work by powered battery for a long time, so can be suitable for the particular surroundings of changing phone with a lot of inconvenient lines and inconvenience.
Claims (3)
1. wireless temperature and humidity intelligent sensor, it forms sensor-based system with host computer, it is characterized in that, and it comprises sensor assembly, microprocessor module, radio receiving transmitting module, serial communication module and power module:
Sensor assembly: sensor is responsible for the humiture information in the acquisition monitoring zone, converts the voltage analog signal of the inner A/D converter of little processing in can sensing range to, and by A/D mouth input microprocessor, products for further is handled;
Microprocessor module: microprocessor is responsible for controlling the operation of whole sensor node, comprises the control of data acquisition, the A/D conversion of humiture data, the precision calibration of data and extraneous together data communication;
Radio receiving transmitting module: wireless communication module adopts ZigBee communication protocol, the radiofrequency signal that the data-modulated that microprocessor is sent becomes the ZigBee agreement to stipulate, launch by antenna, carry out wireless telecommunications to reach, the purpose of exchange of control information and transmitting-receiving image data with other nodes;
Serial port module: the serial communication module makes any one sensor make internal sensor network and outside carry out communication as an interface.
2. wireless temperature and humidity intelligent sensor according to claim 1, it is characterized in that, there is a sensor that serves as aggregation node to link to each other with upper control machine in the described sensor assembly by RS-232 interface, the information that other sensor then collects oneself is modulated into wireless ZigBee radiofrequency signal, and the mode by multi-hop sends aggregation node to.
3. wireless temperature and humidity intelligent sensor according to claim 1, it is characterized in that radio receiving transmitting module comprises: the PCB dipole antenna of ZigBee wireless module master chip MC13192,16.000MHz crystal oscillator, radio frequency unit RF transmission and receiving circuit and 2.4G.
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| CNA2006100224667A CN101275957A (en) | 2006-12-11 | 2006-12-11 | Wireless temperature and humidity intelligent sensor |
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| CNA2006100224667A CN101275957A (en) | 2006-12-11 | 2006-12-11 | Wireless temperature and humidity intelligent sensor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819649A (en) * | 2010-04-13 | 2010-09-01 | 金坛市恒旭科技有限公司 | Active gridded electronic information label |
| CN102252711A (en) * | 2010-05-21 | 2011-11-23 | 沈阳新邮通信设备有限公司 | Wireless sensor and sensing system |
| CN102450033A (en) * | 2009-05-25 | 2012-05-09 | 罗伯特·博世有限公司 | Vehicle sensor, system having a controller for vehicle state determination and at least two vehicle sensors, and method for operation of a system having a controller for vehicle state determination and at least two vehicle sensors |
| CN102571639A (en) * | 2010-12-20 | 2012-07-11 | 中兴通讯股份有限公司 | Intelligent home gateway equipment |
| CN102890854A (en) * | 2011-07-19 | 2013-01-23 | 句容茂森智能机器设备有限公司 | Temperature and humidity monitoring method based on wireless sensor network |
| CN103124444A (en) * | 2011-11-17 | 2013-05-29 | 四川蓝讯宝迩电子科技有限公司 | Node applied to wireless ad hoc network system |
| CN103389132A (en) * | 2013-07-30 | 2013-11-13 | 苏州计量测试研究所 | Intelligent temperature and humidity verification system |
| CN104792969A (en) * | 2015-04-22 | 2015-07-22 | 三峡大学 | Temperature/humidity sensor-based in-situ wireless soil suction value measurement system |
| CN108008680A (en) * | 2017-12-31 | 2018-05-08 | 北京自动测试技术研究所 | A kind of laboratory equipment front end intelligent Information Collection system |
| CN109724862A (en) * | 2018-11-30 | 2019-05-07 | 中国船舶重工集团公司第七一一研究所 | Connecting rod stress test system and control method based on UWB |
| CN109855669A (en) * | 2019-03-25 | 2019-06-07 | 陕西省计量科学研究院 | A kind of temperature and humidity standard container calibrating installation based on WIFI communication |
| CN110255049A (en) * | 2019-05-28 | 2019-09-20 | 上海东方明珠数字电视有限公司 | Wireless monitoring device applied to loose unpacked material storage |
| CN114845264A (en) * | 2022-07-05 | 2022-08-02 | 河北兆育种业集团有限公司 | Breeding information acquisition system based on dynamic path |
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2006
- 2006-12-11 CN CNA2006100224667A patent/CN101275957A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102450033A (en) * | 2009-05-25 | 2012-05-09 | 罗伯特·博世有限公司 | Vehicle sensor, system having a controller for vehicle state determination and at least two vehicle sensors, and method for operation of a system having a controller for vehicle state determination and at least two vehicle sensors |
| CN101819649A (en) * | 2010-04-13 | 2010-09-01 | 金坛市恒旭科技有限公司 | Active gridded electronic information label |
| CN102252711A (en) * | 2010-05-21 | 2011-11-23 | 沈阳新邮通信设备有限公司 | Wireless sensor and sensing system |
| CN102571639A (en) * | 2010-12-20 | 2012-07-11 | 中兴通讯股份有限公司 | Intelligent home gateway equipment |
| CN102890854A (en) * | 2011-07-19 | 2013-01-23 | 句容茂森智能机器设备有限公司 | Temperature and humidity monitoring method based on wireless sensor network |
| CN103124444A (en) * | 2011-11-17 | 2013-05-29 | 四川蓝讯宝迩电子科技有限公司 | Node applied to wireless ad hoc network system |
| CN103389132A (en) * | 2013-07-30 | 2013-11-13 | 苏州计量测试研究所 | Intelligent temperature and humidity verification system |
| CN104792969A (en) * | 2015-04-22 | 2015-07-22 | 三峡大学 | Temperature/humidity sensor-based in-situ wireless soil suction value measurement system |
| CN108008680A (en) * | 2017-12-31 | 2018-05-08 | 北京自动测试技术研究所 | A kind of laboratory equipment front end intelligent Information Collection system |
| CN109724862A (en) * | 2018-11-30 | 2019-05-07 | 中国船舶重工集团公司第七一一研究所 | Connecting rod stress test system and control method based on UWB |
| CN109855669A (en) * | 2019-03-25 | 2019-06-07 | 陕西省计量科学研究院 | A kind of temperature and humidity standard container calibrating installation based on WIFI communication |
| CN110255049A (en) * | 2019-05-28 | 2019-09-20 | 上海东方明珠数字电视有限公司 | Wireless monitoring device applied to loose unpacked material storage |
| CN114845264A (en) * | 2022-07-05 | 2022-08-02 | 河北兆育种业集团有限公司 | Breeding information acquisition system based on dynamic path |
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