CN201535942U

CN201535942U - Temperature and humidity monitoring alarm

Info

Publication number: CN201535942U
Application number: CN2009200478041U
Authority: CN
Inventors: 蒲新征; 李黎; 黄培
Original assignee: XUZHOU INSTITUTE OF ARCHITECTURAL TECHNOLOGY
Current assignee: XUZHOU INSTITUTE OF ARCHITECTURAL TECHNOLOGY
Priority date: 2009-08-19
Filing date: 2009-08-19
Publication date: 2010-07-28
Anticipated expiration: 2019-08-19

Abstract

The utility model discloses a temperature and humidity monitoring alarm, which belongs to alarms and mainly comprises seven parts including a singlechip, a temperature and humidity sensor, a clock chip, a voice device, a display, a power supply unit, and a key part, wherein the singlechip acquires and sends data of each part to the display for displaying; the voice device realizes the functions of alarm clock, hourly chime, and temperature and humidity upper limit alarm through the address inquiry; and four independent keyboards are used for adjusting the time, the alarm clock, and the temperature and humidity alarming upper limit value. The utility model has the advantages that the temperature and humidity voice alarm can display temperature and humidity values on a display screen in real time, and when the temperature or the humidity exceeds the upper limit value set in advance, the voice alarming sound is sent out, so as to remind people of timely taking steps.

Description

The humiture monitoring alarm

Technical field

The utility model relates to automation field, specifically is a kind of humiture monitoring alarm.

Background technology

Along with fast development of society, more and more higher to the monitoring requirement of humiture.For example, the progressively expansion along with the market demand of agricultural byproducts has caused domestic aquaculture and plant husbandry to develop rapidly.At present, do not have humidity temperature monitor in a lot of plants and the green house of vegetables, they can only experience on one's own account come temperature and humidity is judged, this also makes troubles to green house of vegetables plantation family and raisers, many times because lack experience, the optimum growh environment that crops have been missed has brought economic loss for users.Also have simple humiture detecting device is housed in some green house of vegetables, but how many these simple detecting instruments do not bring help to users, a lot of users have ignored these instruments that can not report to the police because have much to do, in this case, a kind of humiture detecting device that can when temperature or humidity surpass higher limit, just can in time report to the police particular importance that just seems.In some office spaces the humiture alarm is installed in addition, it can send warning when breaking out of fire, and in time reminds people is taken measures.

Summary of the invention

The purpose of this utility model provides a kind of humiture monitoring alarm, and the humiture of testing environment in real time in time gives the alarm when temperature or humidity surpass predefined higher limit.

To achieve these goals, the technical scheme that the utility model is taked is: a kind of humiture monitoring alarm comprises:

---central controller;

---Temperature Humidity Sensor, be connected with central controller, be used for collecting temperature and moisture signal and the temperature and humidity signal of gathering is imported master controller;

---display, be connected with central controller, be used for the real-time demonstration of humiture data and time;

---clock chip, be connected with central controller, realize the timing of clock, again time data is sent into central controller controls and show;

---speech chip, be connected with central controller, realize alarm clock, integral point time-indicating awaking and humiture upper limit alarm function by address lookup;

---keyboard portion, be connected with central controller, be used for levelling time, alarm clock and humiture alarming value;

---power unit, be connected with central controller, power to central controller.

The principle of work and power: after system powered on, central controller was delivered on the display screen after by the data acquisition and processing (DAP) to various piece and is shown; Voice device is realized alarm clock, integral point time-indicating awaking and humiture upper limit alarm function by address lookup; Keyboard is used for adjusting time, alarm clock and humiture high alarm setting value.

The utility model has the advantages that: this humiture phonetic alarm can be presented at the humiture value on the display screen in real time, when temperature or humidity surpass predefined higher limit, just can send audio alert sound, allows people in time take measures.

Description of drawings

Fig. 1 is an electric theory diagram of the present utility model;

Fig. 2 is the utility model schematic diagram.

Embodiment

As shown in Figure 1, the humiture phonetic alarm is made up of master control device, Temperature Humidity Sensor, clock chip, voice device, display, button and power supply 7 big modules.That the master control device adopts is STC89C53, and Temperature Humidity Sensor is SHT10, and that clock chip is used is DS12CR887, and voice device is WT588D speech chip and 8M SPI flash, and display is 1602 liquid crystal, and power supply uses is 7805 as the 5V voltage stabilizing.

As shown in Figure 2, the STC89C53 electrification reset adopts the level mode switch to reset.Electrification reset RC circuit, electric capacity 10uF/16v, resistance 10K Ω; The crystal oscillator frequency of STC single-chip microcomputer should be lower than 35MHZ, so adopt 12MHZ, adds two 30 ρ F electric capacity.

The supply voltage of SHT10 is 2.4V～5.5V.After sensor powers on, wait for 11ms, from " dormancy " recovering state.Do not send any instruction during this period.Can increase by the capacitor of 1 100nF between the power pins (VDD and GND), be used for decoupling filtering.The two-wire serial of SHT10 connect (bi-directional 2-wire) sensor signal read and power supply power consumption aspect all done optimization process, its bus type like the I2C bus but and incompatible I2C bus.The SCK pin is the synchronous clock that MCU communicates by letter with asking of SHT10, because interface has comprised full static logic, does not therefore have minimum clock frequency.The DATA pin is 1 triple gate, is used for the data transmission between MCU and the SHT10.The state of DATA changes after the negative edge of serial clock SCK, and is effective at the rising edge of SCK.During data transmission, when SCK is high level, must keep steady state (SS) on the DATA data line.For avoiding data to clash, MCU should drive DATA makes it be in low level state, and the outside connects 1 pull-up resistor signal is pulled to high level.

DS12CR887 is the product of real-time clock (RTC) function compatibility that DS12R885 and quartz crystal and battery are integrated.This device provides the static RAM (SRAM) of RTC/ calendar, timer clock, three maskable interruptions and general interrupts output, square wave able to programme and the backup of 114 byte batteries.Be less than 31 days month, the date at the end of month can be regulated automatically, compensates comprising the leap year.This device can also work in 24 hours or be with 12 hours forms of AM/PM indication.The temperature-compensation circuit of a precision is used for monitoring the state of Vcc.If detect mains power failure, this device can automatically switch to the standby power supply power supply.V (backup) pin is used to support rechargeable battery or super capacitor, and inside comprises an effective all the time trikle charger.DS12CR887 can pass through a multiplexed byte interface accessing, and this device is supported Intel and Motorola pattern.

The WT588D speech chip is the voice singlechip chip that programming is wiped in a powerful repeating.What this product adopted is WT588D one line serial ports control model, can perhaps directly trigger any voice of 0～219 address bit, signaling speed 600us～2000us by signaling end control speech play, time-out, loop play and volume.

The P25 mouth that the I/O mouth P03 of WT588D is defined as DATA data input port and STC89C53 is connected; Resistance in series R7 and LED 1 on the BUSY mouth, the other end of LED1 directly is connected with power supply, and the BUSY mouth directly is connected with the P24 mouth of STC89C53 simultaneously; Reset circuit resets directly for the RESET pin by the P33 of STC89C53; Oscillating circuit is made of the resistance R 6, capacitor C 8, the C9 that are connected between power supply and the CVDD; The module application circuit is powered by 5V, at VCC end series diode D2 and D3; The chip application circuit also is by by the 5V power supply, holds series diode D2 and D3 at VCC; The PWM+/DAC end is done audio frequency output, and the PWM-end soars, and 1.2K resistance of DAC termination and 104 electric capacity are exported to power amplifier to audio frequency again to ground; During circuit board wiring, concussion resistance R 6, capacitor C 3, C5 will try one's best near WT588D, otherwise cause work unusual (this is the cabling requirement of circuit, does not represent the commercial performance of circuit after work) to occur easily.

Display circuit is selected 1602 liquid crystal displays for use, and 1602 adopt 16 pins of standard.Be connected to the DATA port of STH10 after the 15 pins series connection variable resistor R0 of LCD1602 and the resistance R 4.

Keyboard portion has 4 function buttons and 1 reset key, be used for respectively realizing to the time function key regulate S2, time add 1 key S3, time subtract 1 key S4, alarm clock function adjusting key S5.S1 is a reset key topmost separately.Button S2, S3, S4 and S5 are connected with port P20, P21, P22 and the P23 of single-chip microcomputer respectively.

Claims

1. humiture monitoring alarm is characterized in that: comprising:

---central controller;

---Temperature Humidity Sensor, be connected with central controller, be used for collecting temperature and moisture signal and the temperature and humidity signal of gathering is imported central controller;

2. humiture monitoring alarm according to claim 1 is characterized in that: described central controller adopts single-chip microcomputer STC89C53.

3. humiture monitoring alarm according to claim 1 is characterized in that: described Temperature Humidity Sensor adopts the SHT10 sensor.

4. humiture monitoring alarm according to claim 1 is characterized in that: described clock chip adopts the DS12CR887 chip.

5. humiture monitoring alarm according to claim 1 is characterized in that: described voice device adopts WT588D speech chip and 8MSPIflash chip.

6. humiture monitoring alarm according to claim 1 is characterized in that: the free function adjusting key of keyboard portion S2, time add 1 key S3, time subtract 1 key S4, alarm clock function adjusting key S5 totally 4 function buttons, also have a reset key S1; Button S2, S3, S4 and S5 are connected with port P20, P21, P22 and the P23 of single-chip microcomputer STC89C53 respectively.