CN209497319U

CN209497319U - It is continuously the wireless sensor of power itself

Info

Publication number: CN209497319U
Application number: CN201920031762.6U
Authority: CN
Inventors: 宋翔宇
Original assignee: Chengdu CAIC Electronics Co Ltd
Current assignee: Chengdu CAIC Electronics Co Ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2019-10-15
Anticipated expiration: 2029-01-09

Abstract

The utility model discloses a kind of wireless sensor for being continuously power itself, it is desirable to provide a kind of energy acquisition is high-efficient, and adaptation complex environment is strong, can be continuously the wireless sensor of power itself.The utility model is achieved by following technical proposals: the main shaft of solar panel (7) passes through to be screwed on shell (3) with the lock sleeve (8) and connector (10) damped；The center via hole of conducting wire perforation omnidirectional mechanism (6) of solar panel (7), it is electrically connected the charging circuit board (4) being fixed in shell (3) accommodating chamber and its connected charge power supply (11), and the omnidirectional mechanism (6) by being assembled on the main shaft, adjust the angle of solar panel (7) both wings, charging circuit board (4) links together each sensor circuit for carrying each sensor circuit and the radio-frequency module for containing antenna, and is set in shell (3).

Description

It is continuously the wireless sensor of power itself

Technical field

The utility model relates to the confession power technology of micro- energy in wireless sensor network, in particular to lighting angle is self-regulated And it is photovoltaic charged, and the wireless sensor of power itself can be continuously.

Background technique

The comprising modules of wireless sensor are encapsulated in a shell, it will be mentioned by battery or vibrating electricity generator at work Wireless sensor network node is constituted for charge power supply, sensor, data processing unit and communication are integrated with by random distribution Module.Wireless sensor network relies on the advantages such as its small in size, flexible layout, highly reliable, has obtained increasingly in-depth study And application, but the duration of the working life heavy dependence supplying cell of node.With sensor, embedded, channel radio The development of the technologies such as letter, micro electronmechanical, photovoltaic, wireless sensor are required that is, adaptively becoming real isolated node reviews one's lessons by oneself It is multiple, ad hoc network, self-powered etc..Charge power supply problem is to restrict the key factor of wireless sensor network large-scale application.Wirelessly The micro- energy energy storage of sensor is expeditiously charged and is stored in the work of wireless sensor node.It is acquired from ambient enviroment To various types of energy, it must carry out efficiently chronically storing, just can guarantee that wireless sensor network continues working.It solves wireless Sensor energy problem will start with from energy acquisition, so that sensor node is realized energy by efficient storage and the technologies such as energy-saving It measures self-sufficient；It at present in wireless sensor, is mostly powered using battery, battery can only be replaced when electric energy exhausts, or artificial It charges to it.And the particularity of wireless sensor application, it often leads to battery altering or charging is very troublesome, be unfavorable for people Member's operation.Therefore it needs constantly to power to wireless sensor, guarantees that it has enough energy to work normally.Wireless sensor network Network and its energy resource supply wireless sensor node are small in size, are typically only capable to carry the battery of finite energy, the work of Yao Yanchang network Period, the power supply of node are the problem of must be taken into consideration.Since sensor node number is more, distributed areas are wide, and it is usually deployed Environment is complicated, therefore, supplements the energy by way of replacing battery to extend service life) it is unpractical.Common ring The border energy has solar energy, vibrational energy, wind energy, temperature difference thermal energy etc., but these energy often respectively have advantage and disadvantage, and some is by weather item Part is limited and can not sustainedly and stably be energized.Traditional view thinks that wind-power electricity generation is not appropriate for applying and advise greatly in complex environment It is on the wireless sensor network node of mould, and recently studies have shown that will be helpful in conjunction with technologies such as piezoelectricity using small-sized fan It is the mainstream energy storage technology that a kind is applied to wireless sensor network for sensor node power supply.Although the micro- energy technology of wind energy Application on wireless sensor network has a breakthrough, however wind speed unstable the problem of bringing does not obtain very well yet at present Solution.Therefore, wind power generation is applied to large-scale wireless sensor node in complex environment, it is also necessary to improve electricity Research can be continued deeper into quality.Effective acquisition of energy, efficiently storage and utilization and the energy-saving of entirety are wirelessly to pass The key of sensor network breakthrough energy limit.The light and heat comprehensive utilization technique of solar energy will be that solar energy adopts the direction that can develop One of.In the acquisition nature of solar energy, solar energy is most abundant and is easiest to the environmental energy obtained, and solar battery is exactly The semiconductor devices made using photovoltaic effect, also known as photovoltaic device.Compared with traditional chemical battery, solar battery exists Transformation efficiency, equipment builds, environmental protection etc. has unrivaled advantage.Solar battery power density is higher, often cm²MW grades of energy can be obtained.Therefore, when designing energy collecting device for node, it should pay the utmost attention to using solar energy.Solar energy Solar panel is to collect solar radiant energy using the photoelectric effect of silicon wafer using convenient photovoltaic device and be converted into electric energy.But Supply voltage shakiness or the variation for crossing low environment are often adopted node and can be interfered, for energy acquisition part, for example, with When solar energy is node supply energy source, if the sun is lived by obnubilation, the received intensity of illumination of photovoltaic panel will change.

Utility model content

The utility model aim is place in view of the shortcomings of the prior art, provides a kind of compact-sized, energy acquisition High-efficient, continuous working period is long, and adaptation complex environment is strong, can be continuously the wireless sensor of power itself.

In order to achieve the above objectives, the technological means that the utility model uses is as follows: a kind of to be continuously the wireless of power itself Sensor, comprising: the charging circuit board 4 and charge power supply 11 being set in shell 3 are fixed on the support 1 of 3 lower end of shell and consolidate The lock sleeve 8 connected on transverse plane by connector 10 is associated on shell 3, the solar battery connected by 8 main shaft of lock sleeve Plate 7 and its omnidirectional mechanism 6 being fixed on the main shaft, it is characterised in that: the main shaft passes through 8 He of lock sleeve with damping Connector 10 is screwed on shell 3；The center via hole of the conducting wire perforation omnidirectional mechanism 6 of solar panel 7, electrical connection are fixed on Charging circuit board 4 and its connected charge power supply 11 in 3 accommodating chamber of shell, and the omnidirectional mechanism by being assembled on the main shaft 6, the angle of 7 both wings of solar panel is adjusted, charging circuit board 4 will carry each sensor circuit and contain penetrating for antenna Each sensor circuit of frequency module links together, and is set in shell 3.

The utility model has the advantages that compared with the prior art.

It is compact-sized.Charging circuit board and charge power supply are set in shell by the utility model, are connected firmly and are held level with both hands in support 1 On face, the omnidirectional mechanism of solar panel is connected, it is simple for structure compact.

Energy acquisition is high-efficient, and continuous working period is long.The utility model is started with from energy acquisition, by wireless sensor with Solar panel 7 with collection of energy function becomes one, and adjusts solar battery by the omnidirectional mechanism with damping The angle of plate, guarantee the use environment of different latitude can make full use of too can, ensure that sensor in no external power supply In the case of continue working.Using solar recharging lithium ion battery, when work, is expeditiously charged and is stored, and is passed to be wireless Sensor continued power makes wireless sensor realize that energy-autarchic is self-sustaining, ensure that wireless sensor is long by efficient power storage Time service.

It is strong to adapt to complex environment.The utility model use will carry each sensor circuit and contain the radio frequency mould of antenna Each sensor circuit of block links together, and is set in shell 3, adjusts solar panels by the omnidirectional mechanism with damping Angle guarantees that the use environment of different latitude can make full use of solar energy, guarantees sensor no external power supply the case where Under continue working.Anti-interference ability is improved by the wireless communication module of selection work frequency 2.4GHz, ensure that wireless sensing The communication of device wireless transmission distance improves the ability for adapting to complex environment.

Detailed description of the invention

Fig. 1 be the utility model and can be continuously power itself wireless sensing structural perspective；

Fig. 2 is the circuit theory schematic diagram of Fig. 1.

In figure: 1 support, 2 sensors, 3 shells, 4 charging circuit boards, 5 screens, 6 omnidirectional mechanisms, 7 solar panels, 8 Lock sleeve, 9 ball covers, 10 connectors, 11 charge power supplies.

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

Specific embodiment

Refering to fig. 1.In the embodiment described below, a kind of wireless sensor being continuously power itself, comprising: setting In charging circuit board 4 and charge power supply 11 in shell 3, it is fixed on the support 1 of 3 lower end of shell and connects firmly and hold level with both hands on shell 3 The lock sleeve 8 connected on face by connector 10, the solar panel 7 connected by 8 main shaft of lock sleeve and its is fixed on institute The omnidirectional mechanism 6 on main shaft is stated, is screwed on shell 3 wherein the main shaft passes through with the lock sleeve 8 and connector 10 damped； The center via hole of the conducting wire perforation omnidirectional mechanism 6 of solar panel 7, is electrically connected the charging electricity being fixed in 3 accommodating chamber of shell Road plate 4 and its connected charge power supply 11, and the omnidirectional mechanism 6 by assembling on the main shaft adjust 7 liang of solar panel The angle of the wing, charging circuit board 4 will carry each sensor circuit of each sensor circuit with the radio-frequency module for containing antenna It links together, and is set in shell 3.

Charge Management unit, wireless communication unit and the data processing list for connecting wireless sensor built in charging circuit board 4 Member, and the signal conditioning circuit of connection single-chip microcontroller.As the preferred embodiment in the utility model, support 1 includes: that center was provided with The rectangular box that the upper cover and lower cover in hole are constituted, and the orthogonal bracket of flat four paws to extend along rectangular box diagonal line, and And the end of each bracket is formed with the cylinder of connection rectangular box, is equipped with the sensor 2 covered by ball cover 9 on each cylinder.

In the present embodiment, shell 3 is that the trapezoidal tetragonal body constituted is connected firmly by rectangle top cover, and charging circuit board 4 is fixed on The bottom of trapezoidal box body, the screen 5 that charge power supply 11 is connected by lead and is fixed on 3 outer surface of shell；Screen inclined-plane Visible angle meets ergonomics.

Further, rechargeable lithium battery of the charge power supply 11 by solar recharging, the use of the present embodiment charging circuit board 4 Linear adjustable voltage stabilizer TL431 is connect with triode, the lithium battery charging circuit as charge power supply 11.Lithium battery charging circuit 10 output voltage of solar panel is limited in 4.2V, the requirement of 3.7V lithium battery charging voltage is met.

Sensor includes the temperature sensor being fixed on orthogonal four brackets of bracket of the flat four paws of support 1, humidity biography Sensor, formaldehyde sensor and smoke sensor device.Preferred as the present embodiment, temperature sensor uses current mode AD590 model Sensor, humidity sensor can use the sensor of HS1101 model, and formaldehyde sensor can be using MS1200 model Sensor, smoke sensor device can use the sensor of MQ-2 model.Wherein, temperature sensor output electric current and temperature value are at just Than exporting curent change 1uA, therefore need to be converted electric current with the resistance being connected with charging circuit board when every 1 DEG C of the variation of temperature At voltage, the acquisition conditioning of temperature sensor signal can be realized.Humidity sensor HS1101 can be capacitance output sensing Device.Humidity sensor passes through the oscillating circuit that the low-power consumption timer TLC555 being arranged on charging circuit board 4 is constituted, will be certainly The capacitance of body output is converted into square-wave signal, which realizes the survey to ambient humidity by the way of frequency measurement Amount.Smoke sensor device MQ-2 and formaldehyde sensor MS1200 is resistance output type sensor.Smoke sensor device MQ-2 and formaldehyde Sensor MS1200 uses electric resistance partial pressure method to realize the measurement to smog and formaldehyde respectively, then by the list on charging circuit board 4 Piece machine converses each parameter to signal sampling, is sent to wireless sensor by the wireless communication unit on charging circuit board 4 and connects Receiving end.

Refering to Fig. 2.Wireless sensor circuit includes: to contain the wireless communication unit of radio circuit and antenna, electric discharge electricity Road, charging circuit and low battery warning circuit and its Charge Management unit, and the data processing list of connection screen display unit Member, wherein wireless communication unit includes radio circuit and antenna, and the effect of antenna is to increase transmission power, and radio circuit will count It has been processed into the data of digital signal according to processing unit, has been packaged into fixed data structure, has been modulated into the electromagnetic wave of 2.4GHz Launch.

Charge Management unit includes discharge circuit, charging circuit, low battery warning circuit, and discharge circuit is by charge power supply 11 electric energy supply sensor 2, all devices, screen 5 on charging circuit board 4,11 output voltage 3.7V of charge power supply, electric discharge electricity 3.7V is converted to 5V using TLV61220 and exported by road, is powered for all devices, screen 5 on sensor 2, charging circuit board 4.It fills Circuit is the power storage that exports solar panel 7 into charge power supply 11, will be defeated using voltage adjustment chip TL431 Voltage is limited in 4.2V out, and the charging limitation of charge power supply 11 is met with this.

Low battery alarm is the voltage for monitoring charge power supply 11, monitors charge power supply using power supply monitoring chip TC54VX21 11 output voltage, output voltage alert when being lower than 2.6V.

Data processing unit includes the signal conditioning circuit connecting with sensor 2, connect with signal conditioning circuit (Micro Control Unit) micro-control unit MCU；MCU by the CPU of computer, effumability random access memory ram, Solid state semiconductor memory ROM, timer conter and a variety of I/O Interface integrations on one chip, form the monolithic of chip-scale Machine.In an alternate embodiment of the invention, micro-control unit MCU can use the single-chip microcontroller of model IAP12LE62S.IAP12LE62S Single-chip microcontroller is a band 62k byte program storage space, and on piece is integrated with the RAM of 8k byte, 3 timer internals it is enhanced IT instructs single-chip microcontroller.IAP12LE62S is a efficient single-chip microcontroller, and being arranged by software can be achieved ultra low power mode of operation.

To improve anti-interference, in the present embodiment, wireless communication unit is preferably widely used in a variety of short distance low speed Rate communication field, works in 2.4GHz frequency, and software can modify baud rate, peak transfer rate 256kbps, open ground transmission distance From 120m is reached, sensitivity reaches -97dBm, such as uses the CC2530 wireless communication chips of TI company.

For the reliability for improving wireless sensor data transmission, in an alternate embodiment of the invention, wireless sensor uses RS422 Communication interface, the MAX3077 communication interface chip produced using MAXIM company, the chip have completely compatible RS422/RS485 The operation level of two kinds of communication protocol, peak transfer rate reach 16Mbps；

Wireless sensor is controlled by the switch button for being installed on shell 3 and is opened and closed, and switch button is respectively and at data Reason unit parallel connection wireless communication unit, Charge Management unit are connected with screen display unit, and are carried on charging circuit board 4.

Further, in an alternate embodiment of the invention, the capacitor using low-power consumption timer TLC555 as humidity sensor The timer of measuring circuit, humidity sensor output connection low-power consumption timer TLC555 constitute the input of calculator oscillating circuit End, output capacitance value, the shaped circuit shaping of sine wave freuqency signal that oscillating circuit generates obtain partly leading with metal oxide The square-wave signal of body logical device TTL compatible, gives the counter input of micro-control unit MCU, believes the square wave in MCU Number be converted to digital signal storage.

In conclusion sensor is set in support 1 using the utility model, by charging circuit board, radio communication mold Block and charge power supply are set in shell 3, and solar panel 7 is set on omnidirectional mechanism, are charged to lithium battery, guarantee to The continual and steady offer electric energy of sensor；Further, the wireless communication module of selection work frequency 2.4GHz, high reliablity resist Interference performance is strong.

The working method of wireless sensor is different soft by being embedded in single-chip microcontroller based on above structure and circuit The mode of part realizes specific working method, reply using the different latitude being likely to occur when this wireless sensor to solar energy into Row is collected, and carries out following citing to the low power mode of operation that single-chip microcontroller in the application is embedded in:

Firstly, wireless sensor is steadily placed, according to local latitude and time, solar incident angle when high noon is obtained Degree adjusts omnidirectional mechanism, the light angle of solar panel 7 is made to approach 90 degree；Button is turned on the switch, starts to collect energy Amount, the data processing unit of charging circuit board 4 acquire 1 data of sensor, and acquisition in every 10 minutes is primary, wireless sensor circuit list Piece machine stores data, and the wireless communication unit of charging circuit board 4 per a data are sent every other hour, in addition to sending, acquiring Data, usually wireless sensor is in a dormant state, low in energy consumption.

When solar energy deficiency, collection of energy speed is slower, when electric quantity consumption is too fast, at the data of charging circuit board 4 The data acquiring frequency of itself will be adjusted by managing unit, the wireless communication unit data transmission frequency adjustment of charging circuit board 4, nothing The receiving host of line sensor receives adjustment signal, and the frequency acquisition of wireless sensor data is adjusted by technical staff, reduces function Consumption.Sunny, the data acquiring frequency of the data processing unit automatic adjustment height itself of charging circuit board 4 rationally exits low function Consumption mode.

Therefore, long in annual light application time, the big area of intensity, the illumination according to daily different periods and weather is strong Degree, the data processing unit acquisition data of adjustment charging circuit board 4 and the wireless communication unit of charging circuit board 4 send data Frequency gives full play to the function of wireless sensor.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model Within the scope of protection.

Claims

1. a kind of wireless sensor for being continuously power itself, comprising: the charging circuit board (4) that is set in shell (3) and fill Power supply (11) is fixed on the support (1) of shell (3) lower end and connects firmly on shell (3) on transverse plane through connector (10) The lock sleeve (8) of connection, by lock sleeve (8) main shaft connect solar panel (7) and its be fixed on the main shaft Omnidirectional mechanism (6), it is characterised in that: the main shaft, which passes through, is screwed onto shell with the lock sleeve (8) and connector (10) damped (3) on；The center via hole of conducting wire perforation omnidirectional mechanism (6) of solar panel (7), electrical connection are fixed on shell (3) receiving Charging circuit board (4) and its connected charge power supply (11) in chamber, and the omnidirectional mechanism (6) by being assembled on the main shaft, The angle of solar panel (7) both wings is adjusted, charging circuit board (4) will carry each sensor circuit and contain antenna Each sensor circuit of radio-frequency module links together, and is set in shell (3).

2. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: support (1) includes: center It is provided with the rectangular box that the upper cover and lower cover of via hole are constituted, and the orthogonal branch of flat four paws to extend along rectangular box diagonal line Frame, and the end of each bracket is formed with the cylinder of connection rectangular box, is equipped on each cylinder by the biography of ball cover (9) part Sensor (2).

3. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: in charging circuit board (4) Set Charge Management unit, wireless communication unit and the data processing unit for connecting wireless sensor, and the letter of connection single-chip microcontroller Number conditioning circuit.

4. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: shell (3) is by rectangle Top cover connects firmly the trapezoidal tetragonal body of composition, and charging circuit board (4) is fixed on the bottom of trapezoidal box body, connects charging electricity by lead Source (11) and the screen (5) being fixed on shell (3) outer surface.

5. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: charging circuit board (4) is adopted It is connect with linear adjustable voltage stabilizer with triode, the lithium battery charging circuit as charge power supply (11).

6. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: sensor includes being fixed on Temperature sensor, humidity sensor, formaldehyde sensor and smog on orthogonal four brackets of bracket of support (1) flat four paws pass Sensor.

7. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: smoke sensor device and formaldehyde Sensor all uses electric resistance partial pressure method to realize the measurement to smog and formaldehyde respectively, then by the single-chip microcontroller on charging circuit board (4) To signal sampling, each parameter is conversed, wireless sensor is sent to by the wireless communication unit on charging circuit board (4) and is received End.

8. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: wireless sensor circuit packet It includes: containing the wireless communication unit of radio circuit and antenna, the charging of discharge circuit, charging circuit and low battery warning circuit Administrative unit, and the data processing unit of connection screen display unit；Data processing unit has been processed by radio circuit The data of digital signal are packaged into fixed data structure, and the electromagnetic radiation for being modulated into 2.4GHz is gone out.

9. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: data processing unit includes The signal conditioning circuit being connect with sensor (2), the micro-control unit MCU being connect with signal conditioning circuit；MCU is by computer CPU, effumability random access memory ram, solid state semiconductor memory ROM, timer conter and a variety of I/O Interface integrations On one chip, the single-chip microcontroller of chip-scale is formed.

10. being continuously the wireless sensor of power itself as described in claim 1, it is characterised in that: wireless sensor is by pacifying Switch button loaded on shell (3), which controls, to be opened and closed, and wireless communication in parallel with data processing unit is single respectively for switch button Member, Charge Management unit are connected with screen display unit, and are carried on charging circuit board (4).