CN216309258U - Temperature measuring and displaying device for single chip microcomputer - Google Patents
Temperature measuring and displaying device for single chip microcomputer Download PDFInfo
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- CN216309258U CN216309258U CN202122295731.1U CN202122295731U CN216309258U CN 216309258 U CN216309258 U CN 216309258U CN 202122295731 U CN202122295731 U CN 202122295731U CN 216309258 U CN216309258 U CN 216309258U
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Abstract
The utility model relates to a temperature measuring and displaying device for a single chip microcomputer, and belongs to the technical field of electronics. The utility model comprises a singlechip, a real-time clock chip circuit, a temperature sensor circuit, a liquid crystal display output circuit, a keyboard input circuit, a power supply circuit, a reset circuit and a crystal oscillator circuit; the single chip microcomputer circuit is respectively connected with the real-time clock chip circuit, the temperature sensor circuit, the liquid crystal display output circuit, the keyboard input circuit, the power supply circuit, the reset circuit and the crystal oscillator circuit. The utility model can realize rapid temperature measurement, temperature measurement checking and time and date checking.
Description
Technical Field
The utility model relates to a temperature measuring and displaying device for a single chip microcomputer, and belongs to the technical field of electronics.
Background
The utility model discloses a temperature measuring and displaying device, and aims to provide a system capable of quickly measuring temperature, checking measured temperature and checking time and date. It can pass to PLC with temperature signal through the singlechip and carry out long-range reading, the display screen can be installed outside the switch board simultaneously, make things convenient for personnel to read temperature signal in the switch board, it mainly adopts STC89C52RC singlechip to carry out the temperature acquisition design as core controller, simultaneously handle data through the inside clock signal of singlechip, utilize DS18B20 digital temperature sensor to send the temperature signal data of gathering to the singlechip output, reuse DS12C887 real-time clock chip to carry out temperature measurement and digital electronic perpetual calendar design, utilize LCD with temperature signal and time, date signal shows. The additional key circuit can realize the adjustment of time and date. The utility model can be applied to the temperature measurement occasions below 200 ℃.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the utility model provides a temperature measuring and displaying device of a single chip microcomputer, which can quickly measure temperature, check measured temperature and check time and date.
The technical scheme of the utility model is as follows: a temperature measuring and displaying device of a single chip microcomputer comprises the single chip microcomputer, a real-time clock chip circuit, a temperature sensor circuit, a liquid crystal display output circuit, a keyboard input circuit, a power supply circuit, a reset circuit and a crystal oscillator circuit; the single chip microcomputer circuit is respectively connected with the real-time clock chip circuit, the temperature sensor circuit, the liquid crystal display output circuit, the keyboard input circuit, the power supply circuit, the reset circuit and the crystal oscillator circuit.
As a further aspect of the present invention, the reset circuit includes a resistor R3, a capacitor C3, reset switches K1, K2, K3, K4, and a light emitting diode L1; one end of the resistor R3 is grounded, the other end of the resistor R3 is connected with one end of the reset switch K4 and one end of the capacitor C3 and the single chip microcomputer respectively, the other ends of the reset switch K4 and the capacitor C3 are connected with VCC, one ends of the reset switches K1, K2 and K3 are grounded, the other ends of the reset switches K1 and the capacitor C3 are connected with the single chip microcomputer respectively, one end of the light emitting diode L1 is connected with VCC, and the other end of the light emitting diode L1 is connected with the single chip microcomputer.
In a further aspect of the present invention, the crystal oscillator circuit includes capacitors C1, C2 and a crystal oscillator P1, one end of each of the capacitors C1 and C2 is grounded, the other end is connected to two ends of the crystal oscillator P1, and two ends of the crystal oscillator P1 are connected to a single chip respectively.
As a further scheme of the utility model, the temperature sensor circuit adopts a DS18B20 temperature sensor circuit, the DS18B20 temperature sensor adopts a 5V USB power supply mode, a 1 st pin of the DS18B20 temperature sensor is grounded, a 2 nd pin is used as a signal wire, and a 3 rd pin is connected with a power supply.
As a further scheme of the utility model, the liquid crystal display output circuit adopts a 1602LCD liquid crystal display, and the 1602LCD liquid crystal display is connected with the singlechip.
As a further scheme of the utility model, the singlechip adopts an STC89C52 singlechip, and the real-time clock chip circuit adopts a DS12C887 clock chip.
The utility model has the beneficial effects that: the utility model provides a system capable of quickly measuring temperature, checking measured temperature and checking time and date. It can pass to PLC with temperature signal through the singlechip and carry out long-range reading, the display screen can be installed outside the switch board simultaneously, make things convenient for personnel to read temperature signal in the switch board, it mainly adopts STC89C52RC singlechip to carry out the temperature acquisition design as core controller, simultaneously handle data through the inside clock signal of singlechip, utilize DS18B20 digital temperature sensor to send the temperature signal data of gathering to the singlechip output, reuse DS12C887 real-time clock chip to carry out temperature measurement and digital electronic perpetual calendar design, utilize LCD with temperature signal and time, date signal shows. The additional key circuit can realize the adjustment of time and date. The utility model can be applied to the temperature measurement occasions below 200 ℃.
Drawings
FIG. 1 is a block diagram of the digital clock and digital thermometer circuitry of the present invention;
FIG. 2 is a circuit diagram of the reset of the single chip microcomputer of the utility model;
FIG. 3 is a circuit diagram of the single-chip crystal oscillator of the present invention;
FIG. 4 is a temperature measurement schematic of DS18B20 according to the present invention;
FIG. 5 is a diagram of the DS18B20 of the present invention connected with a single chip microcomputer;
FIG. 6 is a circuit diagram of a liquid crystal display according to the present invention;
fig. 7 is a schematic diagram of the overall circuit of the present invention.
Detailed Description
The utility model is further described with reference to the following figures and specific examples.
Example 1: as shown in fig. 1-7, a temperature measuring and displaying device for a single chip microcomputer comprises a single chip microcomputer, a real-time clock chip circuit, a temperature sensor circuit, a liquid crystal display output circuit, a keyboard input circuit, a power supply circuit, a reset circuit and a crystal oscillator circuit; the single chip microcomputer circuit is respectively connected with the real-time clock chip circuit, the temperature sensor circuit, the liquid crystal display output circuit, the keyboard input circuit, the power supply circuit, the reset circuit and the crystal oscillator circuit.
As a further aspect of the present invention, the reset circuit includes a resistor R3, a capacitor C3, reset switches K1, K2, K3, K4, and a light emitting diode L1; one end of the resistor R3 is grounded, the other end of the resistor R3 is connected with one end of the reset switch K4 and one end of the capacitor C3 and the single chip microcomputer respectively, the other ends of the reset switch K4 and the capacitor C3 are connected with VCC, one ends of the reset switches K1, K2 and K3 are grounded, the other ends of the reset switches K1 and the capacitor C3 are connected with the single chip microcomputer respectively, one end of the light emitting diode L1 is connected with VCC, and the other end of the light emitting diode L1 is connected with the single chip microcomputer.
In a further aspect of the present invention, the crystal oscillator circuit includes capacitors C1, C2 and a crystal oscillator P1, one end of each of the capacitors C1 and C2 is grounded, the other end is connected to two ends of the crystal oscillator P1, and two ends of the crystal oscillator P1 are connected to a single chip respectively.
As a further scheme of the utility model, the temperature sensor circuit adopts a DS18B20 temperature sensor circuit, the DS18B20 temperature sensor adopts a 5V USB power supply mode, a 1 st pin of the DS18B20 temperature sensor is grounded, a 2 nd pin is used as a signal wire, and a 3 rd pin is connected with a power supply.
As a further scheme of the utility model, the liquid crystal display output circuit adopts a 1602LCD liquid crystal display, and the 1602LCD liquid crystal display is connected with the singlechip.
As a further scheme of the utility model, the singlechip adopts an STC89C52 singlechip, and the real-time clock chip circuit adopts a DS12C887 clock chip.
The working principle of the utility model is as follows: the temperature sensor circuit transmits temperature signals to an external PLC through a single chip microcomputer for remote reading, meanwhile, a display screen can be installed outside a power distribution cabinet, and a person can conveniently read the temperature signals in the control cabinet, the STC89C52RC single chip microcomputer is mainly adopted as a core controller for temperature acquisition design, meanwhile, data are processed through clock signals inside the single chip microcomputer, the acquired temperature signal data are transmitted to the single chip microcomputer for output by using a DS18B20 digital temperature sensor, the DS12C887 real-time clock chip is used for temperature measurement and digital electronic calendar design, and a liquid crystal display is used for displaying the temperature signals, time and date signals. The additional key circuit can realize the adjustment of time and date.
The measurement temperature range of DS18B20 is-55 to +125 ℃, the precision is +/-0.5 ℃ within the range of-10 to +85 ℃, and the method is suitable for on-site temperature measurement in severe environment. The temperature measurement principle is shown in figure 4;
because the liquid crystal display has the characteristics of small volume, light weight, extremely low power consumption, rich display content and the like, the liquid crystal display is increasingly widely applied to a singlechip application system, and a connection interface between a 1602 character type LCD and a singlechip is shown in figure 6.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides a singlechip temperature measurement and display device which characterized in that: the system comprises a singlechip, a real-time clock chip circuit, a temperature sensor circuit, a liquid crystal display output circuit, a keyboard input circuit, a power supply circuit, a reset circuit and a crystal oscillator circuit; the single chip microcomputer circuit is respectively connected with the real-time clock chip circuit, the temperature sensor circuit, the liquid crystal display output circuit, the keyboard input circuit, the power supply circuit, the reset circuit and the crystal oscillator circuit.
2. The single-chip microcomputer temperature measuring and displaying device according to claim 1, wherein: the reset circuit comprises a resistor R3, a capacitor C3, reset switches K1, K2, K3, K4 and a light-emitting diode L1; one end of the resistor R3 is grounded, the other end of the resistor R3 is connected with one end of the reset switch K4 and one end of the capacitor C3 and the single chip microcomputer respectively, the other ends of the reset switch K4 and the capacitor C3 are connected with VCC, one ends of the reset switches K1, K2 and K3 are grounded, the other ends of the reset switches K1 and the capacitor C3 are connected with the single chip microcomputer respectively, one end of the light emitting diode L1 is connected with VCC, and the other end of the light emitting diode L1 is connected with the single chip microcomputer.
3. The single-chip microcomputer temperature measuring and displaying device according to claim 1, wherein: the crystal oscillator circuit comprises capacitors C1, C2 and a crystal oscillator P1, wherein one ends of the capacitors C1 and C2 are grounded, the other ends of the capacitors C1 and C2 are respectively connected with two ends of a crystal oscillator P1, and two ends of a crystal oscillator P1 are respectively connected with a single chip microcomputer.
4. The single-chip microcomputer temperature measuring and displaying device according to claim 1, wherein: the temperature sensor circuit adopts a DS18B20 temperature sensor circuit, the DS18B20 temperature sensor adopts a 5V USB power supply mode, a 1 st pin of the DS18B20 temperature sensor is grounded, a 2 nd pin is used as a signal wire, and a 3 rd pin is connected with a power supply.
5. The single-chip microcomputer temperature measuring and displaying device according to claim 1, wherein: the liquid crystal display output circuit adopts a 1602LCD liquid crystal display, and the 1602LCD liquid crystal display is connected with the singlechip.
6. The single-chip microcomputer temperature measuring and displaying device according to claim 1, wherein: the singlechip adopts an STC89C52 singlechip, and the real-time clock chip circuit adopts a DS12C887 clock chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122295731.1U CN216309258U (en) | 2021-09-18 | 2021-09-18 | Temperature measuring and displaying device for single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122295731.1U CN216309258U (en) | 2021-09-18 | 2021-09-18 | Temperature measuring and displaying device for single chip microcomputer |
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| Publication Number | Publication Date |
|---|---|
| CN216309258U true CN216309258U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122295731.1U Active CN216309258U (en) | 2021-09-18 | 2021-09-18 | Temperature measuring and displaying device for single chip microcomputer |
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| Country | Link |
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| CN (1) | CN216309258U (en) |
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2021
- 2021-09-18 CN CN202122295731.1U patent/CN216309258U/en active Active
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