CN205537771U - Warm and humid acidimeter of portable numeral towards warehouse - Google Patents
Warm and humid acidimeter of portable numeral towards warehouse Download PDFInfo
- Publication number
- CN205537771U CN205537771U CN201620316964.1U CN201620316964U CN205537771U CN 205537771 U CN205537771 U CN 205537771U CN 201620316964 U CN201620316964 U CN 201620316964U CN 205537771 U CN205537771 U CN 205537771U
- Authority
- CN
- China
- Prior art keywords
- circuit
- hygrothermograph
- numeral
- warehouse
- humidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a warm and humid acidimeter of portable numeral towards warehouse, including singlechip, temperature sensor, humidity transducer, keyboard circuit, detection circuitry, display circuit, warning circuit and power, temperature sensor, humidity transducer are connected with detection circuitry respectively, detection circuitry's output and singlechip are connected, keyboard circuit, display circuit, warning circuit are connected with the singlechip respectively, and the warm and humid acidimeter of this numeral is still including the adsorption base that is used for the fixed warm and humid acidimeter of this numeral. The utility model is used for any position can handyly be installed through adsorption equipment to the measurement of warehouse humiture, shows current temperature and humidity in real time to can report to the police according to the temperature and the humidity alarm threshold value that set up. Simple, with low costs, the stable height of circuit structure, convenient to use, especially adapted using widely.
Description
Technical field
This utility model relates to test automation field, is specifically related to a kind of portable digital Hygrothermograph for warehouse.
Background technology
Temperature and humidity is the important environmental parameters in warehouse, is directly connected to the safety of object stored by warehouse.Such as, foodstuff
Warehouse requires height to the span of control of temperature and humidity, and once temperature, humidity exceed food and most preferably guarantees the quality scope, will shorten food
Shelf-life.For another example, the humidity in stored electrons product class warehouse once too high, can cause that circuit is moist, get rusty, cause short circuit,
Cause security incident in use.Therefore, the important process that the temperature-humidity monitoring to warehouse is always in warehouse operations.Tradition warehouse
Temperature and humidity is often separately measured by operation, and test point is once fixing the most not malleable, exceedes optimal goods in humiture and protects
Warning function is not had when depositing scope yet.So, need a being easy to badly and move at any time, measure humiture simultaneously and possess warning function
Portable digital Hygrothermograph.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of portable digital Hygrothermograph towards warehouse.
The purpose of this utility model is realized by such technical scheme, a kind of portable digital Hygrothermograph towards warehouse,
Including single-chip microcomputer, temperature sensor, humidity sensor, keyboard circuit, testing circuit, display circuit, warning circuit and power supply,
Described temperature sensor, humidity sensor are connected with testing circuit respectively, and the outfan of described testing circuit is connected with single-chip microcomputer, institute
State keyboard circuit, display circuit, warning circuit are connected with single-chip microcomputer respectively, and this numeral Hygrothermograph also includes for fixing this numeral
The absorption pedestal of Hygrothermograph.
Further, described power supply is connected by the power unit of three terminal regulator with numeral Hygrothermograph.
Further, described testing circuit includes amplifying circuit, filter circuit and the A/D change-over circuit being sequentially connected with, described amplification
The input of circuit outfan with temperature sensor, humidity sensor respectively is connected, the outfan of described A/D change-over circuit with
Single-chip microcomputer connects.
Further, described temperature sensor is PT100.
Further, described humidity sensor is HS11O1.
Further, described three terminal regulator is W7805.
Further, A/D converter model is ADS7825.
Owing to have employed technique scheme, this utility model has the advantage that
This utility model for the measurement of warehouse humiture, by adsorbent equipment can be portable be installed to any position, show in real time
Current temperature and humidity, and can report to the police according to the temperature and humidity alarm threshold value arranged.Circuit structure is simple, low cost,
Stability is high, easy to use, be especially suitable for promoting the use of.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing this utility model made into
The detailed description of one step, wherein:
Fig. 1 is this utility model structured flowchart；
Fig. 2 is power pack circuit diagram；
Fig. 3 is temperature measurement fraction circuit diagram；
Fig. 4 is digital-to-analogue block conversion portion circuit diagram；
Fig. 5 is humidity measurement partial circuit diagram；
Fig. 6 is single-chip microcomputer and display partial circuit diagram.
Detailed description of the invention
Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail；Should be appreciated that preferred embodiment is only
In order to this utility model being described rather than in order to limit protection domain of the present utility model.
A kind of portable digital Hygrothermograph towards warehouse, including single-chip microcomputer, temperature sensor, humidity sensor, keyboard circuit,
Testing circuit, display circuit, warning circuit and power supply, described temperature sensor, humidity sensor be connected with testing circuit respectively,
The outfan of described testing circuit is connected with single-chip microcomputer, and described keyboard circuit, display circuit, warning circuit are connected with single-chip microcomputer respectively.
Single-chip microcomputer connects temperature sensor, humidity sensor, buzzer, display, keyboard etc. as master controller.Temperature sensing
Temperature and humidity is changed into the signal of telecommunication by device and humidity sensor, and the signal of telecommunication is amplified, filters by testing circuit, A/D is converted into
Single-chip microcomputer is sent into after digital signal.Current Temperatures and moisture signal are preserved as passed through display circuit after memorizer by current temperature by single-chip microcomputer
Degree and humidity are spaced display on an lcd display successively.By keyboard, temperature and humidity alarm threshold value is set, at Current Temperatures or
When humidity exceedes set alarm threshold value, Single-chip Controlling buzzer is reported to the police.Power supply is single phase bridge type rectifier circu.
Also include the absorption pedestal for fixing this numeral Hygrothermograph.
Described power supply is connected by the power unit of three terminal regulator with numeral Hygrothermograph.Power supply uses single phase bridge type rectifier circu,
It is 5V unidirectional current by 220V convert alternating current, uses transformator that 220V alternating current is become 15V alternating current, having single-phase bridge
Formula rectifying and wave-filtering becomes unidirectional current, the most again three terminal regulator W7805 by output voltage stabilization on+5V.
Described testing circuit includes amplifying circuit, filter circuit and the A/D change-over circuit being sequentially connected with, described amplifying circuit defeated
Entering the end outfan respectively with temperature sensor, humidity sensor to be connected, the outfan of described A/D change-over circuit is with single-chip microcomputer even
Connect.
Preferably, described temperature sensor is PT100；Temperature affects the resistance of PT100, as long as measuring the resistance of PT100,
Just can measure temperature because the operating current of PT100 can not the biggest about 1mA, relevant voltage signal can be fainter, so
Need to amplify signal, in order to AD sampling below.Acquisition Circuit selects three-wire system connection bridge-type temperature measurement circuit, i.e. selects Hui Sidun
Electric bridge, three-wire system connection；And two-stage amplifying circuit, simple filter circuit.
Preferably, A/D converter model be ADS7825, ADS7825 be B-B company of the U.S. produce 4 passages, 16 moulds
Number converter.It is powered by single 5V power supply, and data sampling and conversion time, less than 25 μ s, can input the mould of-10.0～10.0V
Intend voltage.Data after AD conversion both can parallel output, it is possible to Serial output, and data transfer module may also be configured to 4 interchannels even
Continuous circulation conversion.
Preferably, described humidity sensor is that HS1101 is placed in 555 oscillating circuits by HS11O1, HS1101 measurement humidity employing
In, change the change brick of capacitance into voltage-frequency signal, can directly be gathered by microprocessor.HS1101 Humidity Detection senses
Device, its operating circuit is realized by 555 multivibrators, and HS1101 is connected on the 2 of 555 chips as electric capacity variable, between 5 feet,
Pin 7 is used as resistance R10 road, and equivalent electric capacity HS1101 passes through R10R11 threshold voltage (about 0.67V), by R11 to touching
Generating is flat, and then R11 is shorted to ground by 7, and sensor, by different resistance R11, R10 discharge and recharges, is operated circulation,
Form square wave.
Preferably, use dot matrix type LCD display, apply corresponding lcd controller, driver that LCD display is entered
Row scanning, driving, and ROM and RAM of certain space store order and the dot matrix of display character of write.Use 1602
LCD interface.1602 is a kind of dot character type LCD MODULE, can show two row totally 32 characters.According to LCD
The difference of model, required backlight resistance sizes can be different, can regulate voluntarily.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, it is clear that the technology of this area
Personnel can carry out various change and modification without deviating from spirit and scope of the present utility model to this utility model.So, if originally
These amendments of utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model
It is also intended to comprise these change and modification.
Claims (7)
1. the portable digital Hygrothermograph towards warehouse, it is characterized in that: include single-chip microcomputer, temperature sensor, humidity sensor, keyboard circuit, testing circuit, display circuit, warning circuit and power supply, described temperature sensor, humidity sensor are connected with testing circuit respectively, the outfan of described testing circuit is connected with single-chip microcomputer, described keyboard circuit, display circuit, warning circuit are connected with single-chip microcomputer respectively, and this numeral Hygrothermograph also includes the absorption pedestal for fixing this numeral Hygrothermograph.
Portable digital Hygrothermograph towards warehouse the most according to claim 1, it is characterised in that: described power supply is connected by the power unit of three terminal regulator with numeral Hygrothermograph.
Portable digital Hygrothermograph towards warehouse the most according to claim 1, it is characterized in that: described testing circuit includes amplifying circuit, filter circuit and the A/D change-over circuit being sequentially connected with, the input of described amplifying circuit outfan with temperature sensor, humidity sensor respectively is connected, and the outfan of described A/D change-over circuit is connected with single-chip microcomputer.
Portable digital Hygrothermograph towards warehouse the most according to claim 1, it is characterised in that: described temperature sensor is PT100.
Portable digital Hygrothermograph towards warehouse the most according to claim 1, it is characterised in that: described humidity sensor is HS11O1.
Portable digital Hygrothermograph towards warehouse the most according to claim 2, it is characterised in that: described three terminal regulator is W7805.
Portable digital Hygrothermograph towards warehouse the most according to claim 3, it is characterised in that: described A/D converter model is ADS7825.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620316964.1U CN205537771U (en) | 2016-04-14 | 2016-04-14 | Warm and humid acidimeter of portable numeral towards warehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620316964.1U CN205537771U (en) | 2016-04-14 | 2016-04-14 | Warm and humid acidimeter of portable numeral towards warehouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205537771U true CN205537771U (en) | 2016-08-31 |
Family
ID=56793054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620316964.1U Expired - Fee Related CN205537771U (en) | 2016-04-14 | 2016-04-14 | Warm and humid acidimeter of portable numeral towards warehouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205537771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211334A (en) * | 2018-11-12 | 2019-01-15 | 武汉理工大学 | A kind of digital Hygrothermograph and design method based on DHT11 |
-
2016
- 2016-04-14 CN CN201620316964.1U patent/CN205537771U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211334A (en) * | 2018-11-12 | 2019-01-15 | 武汉理工大学 | A kind of digital Hygrothermograph and design method based on DHT11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170414 |