CN208860485U - Temperature acquisition alarm device - Google Patents
Temperature acquisition alarm device Download PDFInfo
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- CN208860485U CN208860485U CN201821247021.3U CN201821247021U CN208860485U CN 208860485 U CN208860485 U CN 208860485U CN 201821247021 U CN201821247021 U CN 201821247021U CN 208860485 U CN208860485 U CN 208860485U
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- 238000009529 body temperature measurement Methods 0.000 abstract description 7
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Abstract
The utility model discloses a temperature acquisition alarm device, including master control circuit, master control circuit's input is connected with temperature detection circuit, reset input circuit and button regulating circuit, the output is connected with temperature display circuit and temperature alarm circuit, button regulating circuit can set for alarm device's early warning temperature numerical value, when the temperature reaches the default, temperature alarm circuit sends alarm signal, prevent the loss that the temperature rise caused, temperature alarm circuit accessible temperature sensor realizes the multiple spot temperature measurement, the temperature measurement scope can be to-55 to 125 ℃, cooperate temperature display circuit to realize ambient temperature's real-time supervision, and is small in size, the advantage that the precision is high, be applicable to the refrigerator, little packing cupboard, the factory building, in different fields such as computer lab or office and the environment.
Description
Technical field
The utility model relates to a kind of temperature detection warning device, especially a kind of temperature acquisition warning device.
Background technique
Survey control technology is widely used to the industries such as oil refining, chemical industry, metallurgy, electric power, electronics, light industry, weaving, with
The development of social progress and industrial technology, temperature factor are increasingly valued by people, in many process of producing product all
Need stringent temperature monitoring, if the transmission of temperature information not in time, precision it is not up to standard, be unfavorable for industrial control unit (ICU) according to when
Between temperature change and carry out response regulatory, lack the temperature measurement system that can carry out multimetering, high real-time simultaneously.
Summary of the invention
For overcome the deficiencies in the prior art, the utility model provide it is a kind of it is small in size, be produced into temperature low, with high accuracy
Acquire warning device.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of temperature acquisition warning device, including governor circuit, the input terminal of governor circuit be connected with temperature sensing circuit,
It resets input circuit and key adjusts circuit, output end is connected with temperature display circuit and temperature buzzer circuit；Foregoing circuit by
Power supply circuit inside warning device provides working power.
The governor circuit includes control chip U1, the model STC89C52RC of the control chip U1.
The power supply circuit includes power interface J1, self-lock switch SW1, light emitting diode L1 and resistance R4；The power supply
1 pin of interface J1 is grounded, and 2 pins connect 1 pin of the self-lock switch SW1；4 pins of the self-lock switch SW1 export 5V
Voltage；The anode of the light emitting diode L1 connects 5V voltage, and cathode is grounded by the resistance R4.
The temperature sensing circuit includes temperature sensor DS1 and resistance R2；The model of the temperature sensor DS1
DS18D20；1 pin of the temperature sensor DS1 connects 5V voltage；2 pins of the temperature sensor DS1 divide two-way, all the way
It is grounded by the resistance R2, another way connects 16 pins of the control chip U1；3 pins of the temperature sensor DS1 connect
Ground.
The reset input circuit includes key S1, capacitor C1 and resistance R1；The key S1 is in parallel with the capacitor C1
Latter termination 5V voltage, the other end divide two-way, are grounded all the way by the resistance R1, and another way connects the 9 of the control chip U1
Pin.
The temperature display circuit includes charactron SMG1 and Chip-R D1；The charactron SMG1 2,3,6,7,8,
9,10 and 11 pins by connecing 40,39,38,37,36,35,34, the 33 of the control chip U1 respectively after the Chip-R D1
With 32 pins；1,4,5 and 12 pins of the charactron SMG1 connect 21,22,23 and 24 pins of the control chip U1 respectively.
The beneficial effects of the utility model are: a key of the utility model, which adjusts circuit, can set the early warning of warning device
Temperature value, when temperature reaches preset value, temperature buzzer circuit signal an alert prevents loss caused by temperature rise, temperature
Circuit for alarming can realize multi-point temperature measurement by temperature sensor, and temperature measurement range can cooperate temperature display to -55 to 125 DEG C
Circuit realizes the real-time monitoring of environment temperature, have the advantages that it is small in size, with high accuracy, suitable for refrigerator, small counter, workshop, machine
In the different fields such as room or office and environment.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the circuit block diagram of the utility model；
Fig. 2 is the circuit diagram first part of the present embodiment；
Fig. 3 is the circuit diagram second part of the present embodiment.
Specific embodiment
Referring to Fig.1, a kind of temperature acquisition warning device, including governor circuit, the input terminal of governor circuit are connected with temperature
Detection circuit resets input circuit and key adjusting circuit, and output end is connected with temperature display circuit and temperature buzzer circuit；On
Circuit is stated by the power supply circuit inside warning device to provide working power (Fig. 2 and Fig. 3 are the complete circuit of the present embodiment altogether
Complete circuit diagram is divided into two parts of Fig. 2 and Fig. 3, the identical terminal of figure label for the ease of observation by schematic diagram
Indicate electrical connection).
Referring to Fig. 2, the governor circuit includes control chip U1, the model STC89C52RC of the control chip U1；
The control chip U1 is circumscribed with clock circuit, provides a suitable clock signal stream, the clock for entire warning device
Circuit is mainly made of the crystal oscillator of 11.0592MHZ and the ceramic disc capacitor C2 and C3 of two 30pf, provides work for control chip U1
Signal pulse, capacitor C2 and C3 are generated for preventing together with wave, enhance the stability of warning device.
The key adjusts circuit and is mainly made of key S3, key S4 and key S5, and in the present embodiment, key S5 is used
It is set in selection, key S4 and S3 are respectively that the adduction of setting alarm temperature subtracts.
The temperature buzzer circuit is mainly made of buzzer S2 and triode Q1, provides alert ring function for warning device,
When temperature alarming equipment temperature detected reaches set alarm temperature, the temperature buzzer circuit can sound the alarm.
The temperature sensing circuit includes temperature sensor DS1 and resistance R2；1 pin of the temperature sensor DS1 connects
5V voltage；2 pins of the temperature sensor DS1 divide two-way, are grounded all the way by the resistance R2, and another way connects the control
16 pins of chip U1；3 pins of the temperature sensor DS1 are grounded；The model DS18D20 of the temperature sensor DS1,
So that the temperature measurement range of the temperature sensing circuit can be extended to -55 to 125 DEG C, in -10 to+85 DEG C of temperature range
Interior, detecting actual temperature reachable ± 0.5 DEG C of precision, valid data position can be set as 9 to 12 by program, and at 12
For resolution ratio up to 0.0625 DEG C, temperature sensor DS1 has unique 64 bit sequence code, and warning device can be multiple by installing
It DS18D20 and is connected in parallel in a data wire, can realize multi-point temperature measurement.
The reset input circuit includes key S1, capacitor C1 and resistance R1；The key S1 is in parallel with the capacitor C1
Latter termination 5V voltage, the other end divide two-way, are grounded all the way by the resistance R1, and another way connects the 9 of the control chip U1
Pin；The reset input circuit is mainly used for initializing governor circuit, and that replys program command most starts state.
The temperature display circuit includes charactron SMG1 and Chip-R D1；The charactron SMG1 2,3,6,7,8,
9,10 and 11 pins by connecing 40,39,38,37,36,35,34, the 33 of the control chip U1 respectively after the Chip-R D1
With 32 pins；1,4,5 and 12 pins of the charactron SMG1 connect 21,22,23 and 24 pins of the control chip U1 respectively；
The temperature display circuit uses 4 ports common cathode LED digital LED P0, improves driving capability by Chip-R D1, as
Segment encode output and the driving of charactron SMG1, the temperature display circuit is for showing detection temperature.
Referring to Fig. 2, the power supply circuit includes power interface J1, self-lock switch SW1, light emitting diode L1 and resistance R4；
1 pin of the power interface J1 is grounded, and 2 pins connect 1 pin of the self-lock switch SW1；Draw the 4 of the self-lock switch SW1
Foot exports 5V voltage；The anode of the light emitting diode L1 connects 5V voltage, and cathode is grounded by the resistance R4, and described luminous two
Pole pipe L1 is used to detect the energization folding condition of the power supply circuit, and the power supply circuit is using self-lock switch SW1 as warning device
Power switch provide the working power of 5V by the external power adapter of power interface J1 for the internal circuit of warning device.
Above embodiment cannot limit the protection scope of the invention, and the personnel of professional skill field are not departing from
In the case where the invention general idea, the impartial modification and variation done still fall within the range that the invention is covered
Within.
Claims (6)
1. a kind of temperature acquisition warning device, including governor circuit, it is characterised in that the input terminal of the governor circuit is connected with
Temperature sensing circuit resets input circuit and key adjusting circuit, and output end is connected with temperature display circuit and temperature buzzer electricity
Road；Foregoing circuit provides working power by the power supply circuit inside warning device.
2. temperature acquisition warning device according to claim 1, it is characterised in that the governor circuit includes control chip
U1, the model STC89C52RC of the control chip U1.
3. temperature acquisition warning device according to claim 1, it is characterised in that the power supply circuit includes power interface
J1, self-lock switch SW1, light emitting diode L1 and resistance R4；1 pin of the power interface J1 is grounded, and 2 pins connect described self-locking
1 pin of switch SW1；4 pins of the self-lock switch SW1 export 5V voltage；The anode of the light emitting diode L1 connects 5V electricity
Pressure, cathode are grounded by the resistance R4.
4. temperature acquisition warning device according to claim 2, it is characterised in that the temperature sensing circuit includes temperature
Sensor DS1 and resistance R2；The model DS18D20 of the temperature sensor DS1；1 pin of the temperature sensor DS1 connects
5V voltage；2 pins of the temperature sensor DS1 divide two-way, are grounded all the way by the resistance R2, and another way connects the control
16 pins of chip U1；3 pins of the temperature sensor DS1 are grounded.
5. temperature acquisition warning device according to claim 2, it is characterised in that the reset input circuit includes key
S1, capacitor C1 and resistance R1；The key S1 latter termination 5V voltage in parallel with the capacitor C1, the other end divide two-way, all the way
It is grounded by the resistance R1, another way connects 9 pins of the control chip U1.
6. temperature acquisition warning device according to claim 2, it is characterised in that the temperature display circuit includes number
Pipe SMG1 and Chip-R D1；After 2,3,6,7,8,9,10 and 11 pins of the charactron SMG1 pass through the Chip-R D1
40,39,38,37,36,35,34,33 and 32 pins of the control chip U1 are connect respectively；1,4,5 and of the charactron SMG1
12 pins connect 21,22,23 and 24 pins of the control chip U1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821247021.3U CN208860485U (en) | 2018-08-03 | 2018-08-03 | Temperature acquisition alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821247021.3U CN208860485U (en) | 2018-08-03 | 2018-08-03 | Temperature acquisition alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208860485U true CN208860485U (en) | 2019-05-14 |
Family
ID=66413754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821247021.3U Expired - Fee Related CN208860485U (en) | 2018-08-03 | 2018-08-03 | Temperature acquisition alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208860485U (en) |
-
2018
- 2018-08-03 CN CN201821247021.3U patent/CN208860485U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190514 |
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| CF01 | Termination of patent right due to non-payment of annual fee |