CN205019031U - Body temperature detecting system - Google Patents
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Abstract
本实用新型公开了一种体温检测系统，包括模拟测温装置、数字测温装置、处理器、液晶显示装置以及WSN无线传送装置，所述模拟测温装置和所述数字测温装置连接到所述处理器上，所述处理器还与所述液晶显示装置和所述WSN无线传送装置连接；所述模拟测温装置包括测温电桥电路、信号放大电路以及AD转换电路，所述数字测温装置包括数字温度传感器。其显著效果是：体温检测简单方便，且能将测温结果无线传送，实现远距离的监控，设备投资小，工作量小，可靠性高。
The utility model discloses a body temperature detection system, comprising an analog temperature measuring device, a digital temperature measuring device, a processor, a liquid crystal display device and a WSN wireless transmission device, the analog temperature measuring device and the digital temperature measuring device are connected to the On the processor, the processor is also connected to the liquid crystal display device and the WSN wireless transmission device; the analog temperature measuring device includes a temperature measuring bridge circuit, a signal amplification circuit and an AD conversion circuit, and the digital measuring device The temperature device includes a digital temperature sensor. Its remarkable effects are: body temperature detection is simple and convenient, and the temperature measurement results can be transmitted wirelessly to realize long-distance monitoring, with small equipment investment, small workload and high reliability.
Description
技术领域technical field
本实用新型涉及到温度检测技术，具体地说，是一种体温检测系统。The utility model relates to temperature detection technology, in particular to a body temperature detection system.
背景技术Background technique
温度，通常意义是物体的冷热程度。但实际上指的是分子运动的剧烈程度。运动越慢，温度越低；越快，温度越高。正是因为这一特点，我们通常所谓的温度测量并不是直接测量的温度，而是将温度转化为某种物体的物理特性变化，通过间接法完成。Temperature, in general, means how hot or cold an object is. But it actually refers to the violent degree of molecular motion. The slower the movement, the lower the temperature; the faster the movement, the higher the temperature. It is precisely because of this feature that what we usually call temperature measurement is not the temperature measured directly, but the temperature is converted into a change in the physical properties of a certain object, which is done through an indirect method.
温度检测很常见，以人体温度检测为例，我国曾分别在2003年和2009年爆发了传染性非典型肺炎(SevereAcuteRespiratorySyndromes，SARS)和急性呼吸道传染病(甲型H1Nl流感)等影响范围较大的传染性疾病。学校、车站、商场等人群比较密集的环境，比较容易成为这些传染性疾病的高危区。因此，对重点地区的人群温度进行检测较为必要。Temperature detection is very common. Taking human body temperature detection as an example, my country once broke out in 2003 and 2009, respectively. infectious disease. Schools, stations, shopping malls and other densely populated environments are more likely to become high-risk areas for these infectious diseases. Therefore, it is necessary to detect the temperature of people in key areas.
传统的人体温度检测方法包括非接触测体温和接触式测体温，所谓非接触测体温利用的是物体都会向外辐射热量这一原理，温度不同，物体向外辐射的射线会发生波长以及能量的变化，虽然非接触测体温具有测温速度快，测温上限高的特点，但是该设备价格昂贵，且需要人工对每个人进行测温，工作量大；传统的接触式测体温是利用了热平衡原理，现有技术中主要有采用水银温度计，即在玻璃管内装入水银，通过水银温度计长时间与人体接触使水银温度升高，使水银体积膨胀，但这种方式测温时间一般在5-10分钟，测温时间长，且这种温度计容易出现故障，可靠性低，且使用不方便。Traditional human body temperature detection methods include non-contact body temperature measurement and contact body temperature measurement. The so-called non-contact body temperature measurement uses the principle that objects radiate heat outward. The temperature is different, and the rays radiated by objects will have different wavelengths and energy. Although the non-contact temperature measurement has the characteristics of fast temperature measurement and high temperature measurement limit, the equipment is expensive and requires manual temperature measurement for each person, which has a large workload; the traditional contact temperature measurement uses heat balance The principle is that in the prior art, mercury thermometers are mainly used, that is, mercury is filled in the glass tube, and the temperature of the mercury is raised by the mercury thermometer being in contact with the human body for a long time, so that the volume of the mercury expands, but the temperature measurement time of this method is generally 5- 10 minutes, the temperature measurement time is long, and this thermometer is prone to failure, low reliability, and inconvenient to use.
实用新型内容Utility model content
针对现有技术的不足，本实用新型的目的是提供一种体温检测系统，采用模拟测温装置和数字测温装置相结合，加设WSN无线传送装置，实现了对人体的不同部位进行测温，使测温简单方便，且能将测温结果无线传送，实现远距离的控制，解决在密集人群里测温难、价格昂贵、测温时间长、工作量大等问题。Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a body temperature detection system, which uses a combination of an analog temperature measurement device and a digital temperature measurement device, and adds a WSN wireless transmission device to realize the temperature measurement of different parts of the human body. , so that the temperature measurement is simple and convenient, and the temperature measurement results can be transmitted wirelessly to realize long-distance control, and solve the problems of difficult temperature measurement, high price, long temperature measurement time, and heavy workload in dense crowds.
为达到上述目的，本实用新型采用的技术方案如下：In order to achieve the above object, the technical scheme adopted by the utility model is as follows:
一种体温检测系统，包括模拟测温装置、数字测温装置、处理器、液晶显示装置以及WSN无线传送装置，所述模拟测温装置和所述数字测温装置连接到所述处理器上，所述处理器还与所述液晶显示装置和所述WSN无线传送装置连接；A body temperature detection system, comprising an analog temperature measuring device, a digital temperature measuring device, a processor, a liquid crystal display device, and a WSN wireless transmission device, the analog temperature measuring device and the digital temperature measuring device are connected to the processor, The processor is also connected with the liquid crystal display device and the WSN wireless transmission device;
所述模拟测温装置包括测温电桥电路、信号放大电路以及AD转换电路，所述数字测温装置包括数字温度传感器；The analog temperature measuring device includes a temperature measuring bridge circuit, a signal amplification circuit and an AD conversion circuit, and the digital temperature measuring device includes a digital temperature sensor;
所述测温电桥电路的第一对角线两端分别为第一输出端和第二输出端，所述测温电桥电路的第二对角线两端分别为电源端和接地端，所述测温电桥电路的第一桥臂由电阻R1和电阻R2并联组成，第二桥臂由电阻R3和电阻R4并联组成，第三桥臂由电阻R9和电阻R10并联后再串联电阻R102和电阻R103组成，第四桥臂由热电阻组成，所述第一桥臂和第二桥臂的公共端为电源端，所述第二桥臂和第三桥臂的公共端为第一输入端，所述第三桥臂和第四桥臂的公共端为接地端，所述第四桥臂和第一桥臂的公共端为第二输出端；The two ends of the first diagonal line of the temperature measuring bridge circuit are the first output terminal and the second output terminal respectively, and the two ends of the second diagonal line of the temperature measuring bridge circuit are the power supply terminal and the grounding terminal respectively, The first bridge arm of the temperature measuring bridge circuit is composed of resistor R1 and resistor R2 connected in parallel, the second bridge arm is composed of resistor R3 and resistor R4 connected in parallel, and the third bridge arm is composed of resistor R9 and resistor R10 connected in parallel and then connected in series with resistor R102 and resistor R103, the fourth bridge arm is composed of a thermal resistor, the common end of the first bridge arm and the second bridge arm is the power supply end, and the common end of the second bridge arm and the third bridge arm is the first input end, the common end of the third bridge arm and the fourth bridge arm is the ground end, and the common end of the fourth bridge arm and the first bridge arm is the second output end;
所述第一输出端与所述信号放大电路中的运算放大器U1的同相输入端连接，所述运算放大器U1的反相输入端与运算放大器U1的输出端连接，运算放大器U1的输出端经电阻R6与运算放大器U3的反相输入端连接，所述第二输入端与所述信号放大电路中的运算放大器U2的同相输入端连接，所述运算放大器U2的反相输入端与运算放大器U2的输出端连接，运算放大器U2的输出端经电阻R8与所述运算放大器U3的同相输入端连接，所述运算放大器U3的同相输入端经电阻R10接地，所述运算放大器U3的输出端经电阻R5与所述运算放大器U3的反相输入端连接，所述运算放大器U3的输出端经电阻R7连接到AD转换电路。The first output terminal is connected with the non-inverting input terminal of the operational amplifier U1 in the signal amplifying circuit, the inverting input terminal of the operational amplifier U1 is connected with the output terminal of the operational amplifier U1, and the output terminal of the operational amplifier U1 is connected through a resistor R6 is connected with the inverting input end of the operational amplifier U3, and the second input end is connected with the non-inverting input end of the operational amplifier U2 in the signal amplifying circuit, and the inverting input end of the operational amplifier U2 is connected with the inverting input end of the operational amplifier U2 The output terminal is connected, the output terminal of the operational amplifier U2 is connected with the non-inverting input terminal of the operational amplifier U3 through the resistor R8, the non-inverting input terminal of the operational amplifier U3 is grounded through the resistor R10, and the output terminal of the operational amplifier U3 is connected through the resistor R5 It is connected with the inverting input terminal of the operational amplifier U3, and the output terminal of the operational amplifier U3 is connected to the AD conversion circuit through the resistor R7.
通过上述设计，可以分别将模拟测温装置和数字测温装置组成的测温设备设置成不同的形状，方便用户测量人体不同部位的温度，提高测温的精确度和可靠性。Through the above design, the temperature measuring equipment composed of analog temperature measuring device and digital temperature measuring device can be set in different shapes, which is convenient for users to measure the temperature of different parts of the human body, and improves the accuracy and reliability of temperature measurement.
进一步描述，为了使测量精确，所述热电阻为PT100热电阻。To further describe, in order to make the measurement accurate, the thermal resistance is a PT100 thermal resistance.
再进一步描述，为了使数字温度装置的接线方便，所述数字温度传感器的芯片型号为DS18B20。To further describe, in order to facilitate the wiring of the digital temperature device, the chip model of the digital temperature sensor is DS18B20.
再进一步描述，为了节省处理器I/O资源，且精度高，所述AD转换电路采用型号为TLC2543的AD转换芯片。To further describe, in order to save processor I/O resources and have high precision, the AD conversion circuit adopts an AD conversion chip whose model is TLC2543.
作为优选，所述处理器采用STC12C52系列单片机。As a preference, said processor adopts STC12C52 series single-chip microcomputer.
再进一步描述，为了降低成本和缩短开发周期，所述WSN无线传送装置采用CC2530芯片。To further describe, in order to reduce the cost and shorten the development period, the WSN wireless transmission device adopts the CC2530 chip.
作为不同的实施方式，所述液晶显示装置采用1602液晶显示屏。As a different implementation manner, the liquid crystal display device adopts a 1602 liquid crystal display screen.
本实用新型的显著效果是：具有模拟测温装置和数字测温装置的测温设备，可以将两种测温装置设置成不同的形状，方便了用户测量不同部位的温度，且加设了WSN无线传送装置，能将测温结果无线传送，实现远距离的控制，并解决了在密集人群里测温难、设备价格昂贵、测温时间长、工作量大等问题。The remarkable effect of the utility model is: the temperature measuring equipment with the analog temperature measuring device and the digital temperature measuring device can set the two temperature measuring devices into different shapes, which is convenient for the user to measure the temperature of different parts, and a WSN is added The wireless transmission device can wirelessly transmit the temperature measurement results, realize long-distance control, and solve the problems of difficult temperature measurement in dense crowds, expensive equipment, long temperature measurement time, and heavy workload.
附图说明Description of drawings
图1是本实用新型的电路原理框图；Fig. 1 is the circuit principle block diagram of the present utility model;
图2是测温电桥电路原理图；Figure 2 is a schematic diagram of the temperature measuring bridge circuit;
图3是信号放大电路原理图；Fig. 3 is a schematic diagram of a signal amplification circuit;
图4是AD装换电路原理图；Figure 4 is a schematic diagram of the AD replacement circuit;
图5是处理器电路原理图；Fig. 5 is a schematic diagram of a processor circuit;
具体实施方式detailed description
下面结合附图对本实用新型的具体实施方式以及工作原理作进一步详细说明。The specific embodiment and working principle of the present utility model will be described in further detail below in conjunction with the accompanying drawings.
从图1可以看出，一种体温检测系统，包括模拟测温装置、数字测温装置、处理器、液晶显示装置以及WSN无线传送装置，模拟测温装置和数字测温装置连接到处理器上，处理器还与液晶显示装置和WSN无线传送装置连接；It can be seen from Figure 1 that a body temperature detection system includes an analog temperature measurement device, a digital temperature measurement device, a processor, a liquid crystal display device, and a WSN wireless transmission device, and the analog temperature measurement device and the digital temperature measurement device are connected to the processor , the processor is also connected with the liquid crystal display device and the WSN wireless transmission device;
模拟测温装置包括测温电桥电路、信号放大电路以及AD转换电路，数字测温装置包括数字温度传感器；The analog temperature measuring device includes a temperature measuring bridge circuit, a signal amplification circuit and an AD conversion circuit, and the digital temperature measuring device includes a digital temperature sensor;
从图2可以看出，测温电桥电路的第一对角线两端分别为第一输出端和第二输出端，测温电桥电路的第二对角线两端分别为电源端和接地端，测温电桥电路的第一桥臂由电阻R1和电阻R2并联组成，第二桥臂由电阻R3和电阻R4并联组成，第三桥臂由电阻R9和电阻R10并联后再串联电阻R102和电阻R103组成，第四桥臂由热电阻组成，第一桥臂和第二桥臂的公共端为电源端，第二桥臂和第三桥臂的公共端为第一输入端，第三桥臂和第四桥臂的公共端为接地端，第四桥臂和第一桥臂的公共端为第二输出端；It can be seen from Figure 2 that the two ends of the first diagonal line of the temperature measuring bridge circuit are respectively the first output end and the second output end, and the two ends of the second diagonal line of the temperature measuring bridge circuit are respectively the power supply end and the second output end. Ground terminal, the first bridge arm of the temperature measuring bridge circuit is composed of resistor R1 and resistor R2 connected in parallel, the second bridge arm is composed of resistor R3 and resistor R4 connected in parallel, and the third bridge arm is composed of resistor R9 and resistor R10 connected in parallel and then connected in series. Composed of R102 and resistor R103, the fourth bridge arm is composed of a thermal resistor, the common end of the first bridge arm and the second bridge arm is the power supply end, the common end of the second bridge arm and the third bridge arm is the first input end, the second bridge arm The common end of the three bridge arms and the fourth bridge arm is the ground end, and the common end of the fourth bridge arm and the first bridge arm is the second output end;
从图3可以看出，第一输出端与信号放大电路中的运算放大器U1的同相输入端连接，运算放大器U1的反相输入端与运算放大器U1的输出端连接，运算放大器U1的输出端经电阻R6与运算放大器U3的反相输入端连接，第二输入端与信号放大电路中的运算放大器U2的同相输入端连接，运算放大器U2的反相输入端与运算放大器U2的输出端连接，运算放大器U2的输出端经电阻R8与运算放大器U3的同相输入端连接，运算放大器U3的同相输入端经电阻R10接地，运算放大器U3的输出端经电阻R5与运算放大器U3的反相输入端连接，运算放大器U3的输出端经电阻R7连接到AD转换电路。其中信号放大器的输出为Vin+为运算放大器U3的同相输入电压，Vin-为运算放大器U3的反相输入电压，Vout为运算放大器U3的输出电压。As can be seen from Fig. 3, the first output terminal is connected with the noninverting input terminal of the operational amplifier U1 in the signal amplifying circuit, the inverting input terminal of the operational amplifier U1 is connected with the output terminal of the operational amplifier U1, and the output terminal of the operational amplifier U1 is passed through Resistor R6 is connected with the inverting input terminal of the operational amplifier U3, the second input terminal is connected with the non-inverting input terminal of the operational amplifier U2 in the signal amplifying circuit, the inverting input terminal of the operational amplifier U2 is connected with the output terminal of the operational amplifier U2, and the operation The output terminal of the amplifier U2 is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R8, the non-inverting input terminal of the operational amplifier U3 is grounded through the resistor R10, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3 through the resistor R5, The output end of the operational amplifier U3 is connected to the AD conversion circuit via the resistor R7. where the output of the signal amplifier is V in+ is the non-inverting input voltage of the operational amplifier U3, V in- is the inverting input voltage of the operational amplifier U3, and V out is the output voltage of the operational amplifier U3.
从图4可以看出，AD转换电路的AD转换芯片型号为TLC2543。It can be seen from Figure 4 that the AD conversion chip model of the AD conversion circuit is TLC2543.
从图5可以看出，处理器采用STC12C52系列单片机。It can be seen from Fig. 5 that the processor adopts STC12C52 series single-chip microcomputer.
进一步描述，热电阻为PT100热电阻。For further description, the thermal resistance is a PT100 thermal resistance.
优选地，数字温度传感器的芯片型号为DS18B20。Preferably, the chip model of the digital temperature sensor is DS18B20.
在本实施例中，为了降低成本和缩短开发周期，WSN无线传送装置采用CC2530芯片。In this embodiment, in order to reduce the cost and shorten the development cycle, the WSN wireless transmission device adopts the CC2530 chip.
在本实施例中，液晶显示装置采用1602液晶显示屏。In this embodiment, the liquid crystal display device adopts a 1602 liquid crystal display screen.
本实用新型的工作原理如下：The working principle of the utility model is as follows:
通过测温电桥电路将热电阻Pt100的变化值转化成为电压值，通过第一输出端信号放大电路的运算放大器U1同相输入端连接，第二输出端与运算放大器U2同相输入端连接，传送给信号放大电路，进行模拟量放大，经信号放大后的信号经运算放大器U3的输出端与AD转换电路连接，AD转换芯片TLC2543将模拟电压信号转换成数字信号，并送处理器处理，处理器经过处理，首先通过串口将温度数据传输至WSN无线传送装置，传送到远处，进行监控，；同时处理器将对应温度值传送至液晶显示装置，并在液晶显示屏上显示出来；同时，数字测温装置中的数字测温芯片与处理器连接，进行温度检测，在实际应用中可以将数字测温装置和模拟测温装置设置成不同的形状，实现不同部位采用不同的测温装置，使在密集的人群里测温变得简单方便，设备费用低，工作量小，可靠性高，且能实现远程监控，实时监测人体体温。The change value of the thermal resistance Pt100 is converted into a voltage value through the temperature measuring bridge circuit, and the operational amplifier U1 of the first output signal amplification circuit is connected to the in-phase input terminal, and the second output terminal is connected to the same-phase input terminal of the operational amplifier U2, and transmitted to The signal amplifying circuit performs analog amplification. The amplified signal is connected to the AD conversion circuit through the output terminal of the operational amplifier U3. The AD conversion chip TLC2543 converts the analog voltage signal into a digital signal and sends it to the processor for processing. Processing, first transmit the temperature data to the WSN wireless transmission device through the serial port, and then transmit it to a remote place for monitoring; at the same time, the processor transmits the corresponding temperature value to the liquid crystal display device and displays it on the liquid crystal display; at the same time, the digital measurement The digital temperature measuring chip in the temperature device is connected to the processor for temperature detection. In practical applications, the digital temperature measuring device and the analog temperature measuring device can be set in different shapes, so that different parts can use different temperature measuring devices, so that in Temperature measurement in dense crowds has become simple and convenient, with low equipment cost, small workload, high reliability, and can realize remote monitoring and real-time monitoring of human body temperature.
Claims (7)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108931956A (en) * | 2018-09-03 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | Temperature signals simulation output device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108931956A (en) * | 2018-09-03 | 2018-12-04 | 康泰医学系统（秦皇岛）股份有限公司 | Temperature signals simulation output device and method |
| CN108931956B (en) * | 2018-09-03 | 2024-03-26 | 康泰医学系统（秦皇岛）股份有限公司 | Body temperature signal analog output device and method |
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