技术领域technical field
本发明涉及一种温度显示仪表，特别是一种热电阻温度显示仪。The invention relates to a temperature display instrument, in particular to a thermal resistance temperature display instrument.
背景技术Background technique
热电阻测温中应用非常普遍，但由于热电阻的品种多，且显示温度的仪表需要与热电阻的型号相对应，这就造成了显示仪表只能显示与之对应的热电阻测得的温度，不但造成仪表资源的浪费，还由于显示仪表太多给操作人员带来不便。Thermal resistance is widely used in temperature measurement, but because there are many types of thermal resistance, and the instrument that displays the temperature needs to correspond to the type of thermal resistance, this causes the display instrument to only display the temperature measured by the corresponding thermal resistance , not only causes a waste of instrument resources, but also brings inconvenience to operators due to too many display instruments.
发明内容Contents of the invention
本发明要解决的技术问题在于提供一种能与多种热电阻配套使用温度仪表。The technical problem to be solved by the present invention is to provide a temperature instrument that can be matched with various thermal resistances.
为达到上述目的，本发明通过以下的技术方案来实现：To achieve the above object, the present invention is achieved through the following technical solutions:
一种热电阻温度显示仪，其特征在于，包括热电阻温度传感器、放大电路、A/D转换器、单片机、LCD显示、按键、串口输出和报警器，所述的放大电路分别与热电阻温度传感器、A/D转换器和单片机连接，所述的A/D转换器、LCD显示、按键、串口输出和报警器分别与单片机连接。A thermal resistance temperature display instrument is characterized in that it comprises a thermal resistance temperature sensor, an amplifying circuit, an A/D converter, a single-chip microcomputer, an LCD display, buttons, a serial port output and an alarm, and the amplifying circuit is connected with the thermal resistance temperature respectively. The sensor, the A/D converter are connected with the single-chip microcomputer, and the described A/D converter, LCD display, buttons, serial port output and alarm are respectively connected with the single-chip microcomputer.
进一步，所述的热电阻温度传感器，包括Pt100和Cu50。Further, the thermal resistance temperature sensor includes Pt100 and Cu50.
进一步，所述的放大电路的型号为LM358。Further, the model of the amplifying circuit is LM358.
进一步，所述的A/D转换器的型号为PCF8591。Further, the model of the A/D converter is PCF8591.
进一步，所述的LCD显示的型号为LCD1602。Further, the model of the LCD display is LCD1602.
进一步，所述的单片机的型号为STC89C52。Further, the model of the single-chip microcomputer is STC89C52.
本发明的工作原理：热电阻温度传感器将温度信号转换为电阻的变化，经放大电路放大后输出标准的1-5V直流电压，再由A/D转换器转换后送到单片机，单片机驱动LCD显示指示温度，按键用于操作设置，如设置热电阻的类型、温度显示范围和报警上下限等，当温度越限时，报警器发出报警信号，串口输出用于和计算机的通信。The working principle of the present invention: the thermal resistance temperature sensor converts the temperature signal into a change in resistance, and outputs a standard 1-5V DC voltage after being amplified by the amplifier circuit, and then converted by the A/D converter and sent to the single-chip microcomputer, and the single-chip microcomputer drives the LCD display Indicate the temperature, the button is used for operation setting, such as setting the type of thermal resistance, temperature display range and alarm upper and lower limits, etc. When the temperature exceeds the limit, the alarm will send out an alarm signal, and the serial port output is used for communication with the computer.
本发明的有益效果是，提供了一种能显示多种热电阻测温的温度显示仪表。The beneficial effect of the invention is that it provides a temperature display instrument capable of displaying the temperature measured by various thermal resistances.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
附图中标记含义如下：The meanings of the marks in the attached drawings are as follows:
1、热电阻温度传感器 2、放大电路 3、A/D转换器 4、单片机 5、LCD显示 6、按键 7、串口输出 8、报警器。 1. Thermal resistance temperature sensor 2. Amplifying circuit 3. A/D converter 4. Single-chip microcomputer 5. LCD display 6. Button 7. Serial port output 8. Alarm.
具体实施方式Detailed ways
下面结合示图及具体实施例对本发明作进一步的详细说明。The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
参照图1，本发明一种热电阻温度显示仪，包括热电阻温度传感器1、放大电路2、A/D转换器3、单片机4、LCD显示5、按键6、串口输出7和报警器8，所述的放大电路2分别与热电阻温度传感器1、A/D转换器3和单片机4连接，所述的A/D转换器3、LCD显示5、按键6、串口输出7和报警器8分别与单片机4连接。With reference to Fig. 1, a kind of thermal resistance temperature display instrument of the present invention comprises thermal resistance temperature sensor 1, amplifying circuit 2, A/D converter 3, single-chip microcomputer 4, LCD display 5, button 6, serial port output 7 and alarm 8, Described amplifying circuit 2 is respectively connected with thermal resistance temperature sensor 1, A/D converter 3 and single-chip microcomputer 4, and described A/D converter 3, LCD display 5, button 6, serial port output 7 and alarm 8 are respectively Connect with microcontroller 4.
进一步，所述的热电阻温度传感器1，包括Pt100和Cu50。Further, the thermal resistance temperature sensor 1 includes Pt100 and Cu50.
进一步，所述的放大电路2的型号为LM358。Further, the model of the amplifying circuit 2 is LM358.
进一步，所述的A/D转换器3的型号为PCF8591。Further, the model of the A/D converter 3 is PCF8591.
进一步，所述的LCD显示5的型号为LCD1602。Further, the model of the LCD display 5 is LCD1602.
进一步，所述的单片机4的型号为STC89C52。Further, the model of the single-chip microcomputer 4 is STC89C52.
本发明的工作原理：热电阻温度传感器1将温度信号转换为电阻的变化，经放大电路2放大后输出标准的1-5V直流电压，再由A/D转换器3转换后送到单片机4，单片机4驱动LCD显示5指示温度，按键6用于操作设置，如设置热电阻的类型、温度显示范围和报警上下限等，当温度越限时，报警器8发出报警信号，串口输出7用于和计算机的通信。。Working principle of the present invention: the thermal resistance temperature sensor 1 converts the temperature signal into a change in resistance, and outputs a standard 1-5V DC voltage after being amplified by the amplifier circuit 2, and then sent to the single chip microcomputer 4 after being converted by the A/D converter 3, Single chip microcomputer 4 drives LCD display 5 to indicate temperature, button 6 is used for operation setting, such as setting the type of thermal resistance, temperature display range and alarm upper and lower limits, etc. When the temperature exceeds the limit, alarm 8 sends out an alarm signal, and serial port output 7 is used for communication with Computer communication. .
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746768.3ACN104359581A (en) | 2014-12-09 | 2014-12-09 | Temperature display for thermal resistor |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746768.3ACN104359581A (en) | 2014-12-09 | 2014-12-09 | Temperature display for thermal resistor |
| Publication Number | Publication Date |
|---|---|
| CN104359581Atrue CN104359581A (en) | 2015-02-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410746768.3APendingCN104359581A (en) | 2014-12-09 | 2014-12-09 | Temperature display for thermal resistor |
| Country | Link |
|---|---|
| CN (1) | CN104359581A (en) |
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| CN105316020A (en)* | 2015-05-20 | 2016-02-10 | 长沙理工大学 | High-viscosity composite modified pitch and storing and heating device thereof |
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| CN201556274U (en)* | 2009-09-11 | 2010-08-18 | 常州齐泰电气制造有限公司 | Temperature alarm device for power distribution cabinet |
| CN201852646U (en)* | 2010-10-15 | 2011-06-01 | 中国计量学院 | An instrument for improving the temperature adjustment accuracy of electric iron thermostat |
| CN202350927U (en)* | 2011-10-21 | 2012-07-25 | 无锡市厚德自动化仪表有限公司 | Intelligently universal digital display device |
| WO2014113959A1 (en)* | 2013-01-24 | 2014-07-31 | Intel Corporation | Integrated hardware and software for probe |
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| CN201335744Y (en)* | 2008-11-27 | 2009-10-28 | 上海第二工业大学 | Temperature measuring device for electrode paste baking |
| CN201556274U (en)* | 2009-09-11 | 2010-08-18 | 常州齐泰电气制造有限公司 | Temperature alarm device for power distribution cabinet |
| CN201852646U (en)* | 2010-10-15 | 2011-06-01 | 中国计量学院 | An instrument for improving the temperature adjustment accuracy of electric iron thermostat |
| CN202350927U (en)* | 2011-10-21 | 2012-07-25 | 无锡市厚德自动化仪表有限公司 | Intelligently universal digital display device |
| WO2014113959A1 (en)* | 2013-01-24 | 2014-07-31 | Intel Corporation | Integrated hardware and software for probe |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105316020A (en)* | 2015-05-20 | 2016-02-10 | 长沙理工大学 | High-viscosity composite modified pitch and storing and heating device thereof |
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| WD01 | Invention patent application deemed withdrawn after publication | Application publication date:20150218 |