Question

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温度控制电路在工农业生产中有着广泛的应用，如在粮仓库的粮食仓贮保管中，粮仓内的温度是安全保管粮食的重要因素，本文阐述了PTCR的结构、基本特性，主要参数、应用及其发展趋势，采用PTC热敏电阻，LM311，继电器等组成一个简单的温度报警装置。
实验结果表明，当由PTCR探头所接触的温度经电路转换电量输出一个开关量，如果温度超过预定值，此时的开关即开启，可以根据实际需要，开关可以直接控制声音、灯光报警器，以声音、灯光等形式提醒用户注意。开关也可以连接执行单元，对被测环境进行降温处理，以保证被测环境的温度处于一个相对安全的温度段。
此电路结构简单，低成本，易投入生产，克服了原来人工测温、浪费人力、物力投入的缺点，提高测量的准确性，及时性。
翻译成英文

Answer 1

Temperature control circuit in the industrial and agricultural production has a wide range of applications, such as warehousing of food grain storage in the warehouse, the temperature inside the barn is an important factor in the safe custody of food, the paper describes the structure of PTCR, basic characteristics, main parameters, application and trends, the use of PTC thermistors, LM311, relays and other components of a simple temperature alarm device.
The experimental results show that when in contact with the probe by the PTCR temperature conversion by the power output of a circuit switch, if the temperature exceeds a predetermined value, then the switch is open, according to actual needs, the switch can directly control the sounds, lights, alarms, to sound, light and other forms of alerts you. Execution unit switch can also be connected, the measured environment temperatures, and to ensure that the environment temperature measured in a relatively safe temperature ranges.
The circuit structure is simple, low cost, easy to put into production, to overcome the original artificial temperature, waste of manpower, material resources of the shortcomings and improve the measurement accuracy, timeliness.
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Answer 2

Temperature control circuit in industrial and agricultural production is widely used in food, such as in the grain warehouse storage warehouse keeping the temperature inside the granary, is kept safe food, this article discusses the important factors of structure, basic characteristics PTCR, main parameters, application and development trend, using the PTC thermistors, relays, LM311 components, such as a simple temperature alarm device.
Experimental results show that, when PTCR probe by the contact with the power output circuit temperature switches, if temperatures exceed predetermined value, namely the switch can open, according to actual needs, switch can directly control sound, light, sound and light alarm in such form remind users note. Switches also can connect to the execution unit, to be measured cooling treatment, environment to ensure the environmental temperature measured by in a relatively safe temperature period.
This circuit is simple in structure, low cost, easy to put into production, overcome the original artificial temperature measurement, the waste of manpower and material resources, increase input, timeliness accuracy of measurement.