CN204496314U - A kind of protection circuit of servo-driver - Google Patents
A kind of protection circuit of servo-driver Download PDFInfo
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- CN204496314U CN204496314U CN201520208962.6U CN201520208962U CN204496314U CN 204496314 U CN204496314 U CN 204496314U CN 201520208962 U CN201520208962 U CN 201520208962U CN 204496314 U CN204496314 U CN 204496314U
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Abstract
本实用新型公开了一种伺服驱动器的保护电路，包括温度检测电路、温度基准电路、比较电路、开关电路、风扇工作电路和风扇，所述温度检测电路和温度基准电路与比较电路的输入端连接，所述开关电路与比较电路的输出端连接，所述风扇工作电路与开关电路连接，所述风扇与风扇工作电路连接。本实用新型通过比较电路比较温度检测电路和温度基准电路的数值，根据比较结果控制开关电路的导通与关断，进而实现风扇工作电路控制风扇的开启与关闭。
The utility model discloses a protection circuit of a servo driver, which comprises a temperature detection circuit, a temperature reference circuit, a comparison circuit, a switch circuit, a fan working circuit and a fan, and the temperature detection circuit and the temperature reference circuit are connected to the input end of the comparison circuit , the switch circuit is connected to the output end of the comparison circuit, the fan working circuit is connected to the switch circuit, and the fan is connected to the fan working circuit. The utility model compares the values of the temperature detection circuit and the temperature reference circuit through the comparison circuit, controls the conduction and shutdown of the switch circuit according to the comparison result, and then realizes the fan working circuit to control the fan on and off.
Description
技术领域technical field
本实用新型涉及伺服驱动器技术领域，更具体地说，特别涉及一种伺服驱动器的保护电路。The utility model relates to the technical field of servo drives, in particular to a protection circuit of a servo drive.
背景技术Background technique
随着电力电子技术、微电子技术以及现代控制理论的发展，伺服驱动器已经广泛应用于各个行业。在伺服驱动器工作过程中会产生大量的热量，现有技术中是通过散热器一直工作来进行散热，这样存在资源浪费的缺点。因此，如何设计一种可以根据温度来控制散热器工作的保护电路是本领域技术人员所研究的方向之一。With the development of power electronics technology, microelectronics technology and modern control theory, servo drives have been widely used in various industries. A large amount of heat is generated during the working process of the servo driver. In the prior art, the heat sink is always working to dissipate heat, which has the disadvantage of wasting resources. Therefore, how to design a protection circuit that can control the operation of the radiator according to the temperature is one of the research directions for those skilled in the art.
实用新型内容Utility model content
本实用新型的目的在于提供一种可以根据温度来实时控制风扇工作的伺服驱动器的保护电路。The purpose of the utility model is to provide a protection circuit of a servo drive that can control the operation of the fan in real time according to the temperature.
为了达到上述目的，本实用新型采用的技术方案如下：In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
一种伺服驱动器的保护电路，包括温度检测电路、温度基准电路、比较电路、开关电路、风扇工作电路和风扇，所述温度检测电路和温度基准电路与比较电路的输入端连接，所述开关电路与比较电路的输出端连接，所述风扇工作电路与开关电路连接，所述风扇与风扇工作电路连接。A protection circuit for a servo driver, comprising a temperature detection circuit, a temperature reference circuit, a comparison circuit, a switch circuit, a fan working circuit and a fan, the temperature detection circuit and the temperature reference circuit are connected to the input end of the comparison circuit, and the switch circuit It is connected with the output end of the comparison circuit, the fan working circuit is connected with the switch circuit, and the fan is connected with the fan working circuit.
优选地，所述温度检测电路包括第一电阻和热敏电阻，所述比较电路为一比较器，所述温度基准电路为一第二电阻；所述第一电阻的一端与电源VCC连接，其另一端经过热敏电阻接地，所述第一电阻和热敏电阻的连接端与比较器的输入端正极连接；所述第二电阻的一端与电源VCC连接，其另一端与比较器的输入端负极连接。Preferably, the temperature detection circuit includes a first resistor and a thermistor, the comparison circuit is a comparator, and the temperature reference circuit is a second resistor; one end of the first resistor is connected to the power supply VCC, and its The other end is grounded through the thermistor, and the connecting end of the first resistor and the thermistor is connected to the anode of the comparator input; one end of the second resistor is connected to the power supply VCC, and the other end is connected to the input end of the comparator Negative connection.
优选地，所述开关电路包括第三电阻、第四电阻、三极管和发光二极管，所述第三电阻连接在比较电路的输出端与三极管的基极之间，所述三极管的发射极接地，其集电极依次通过发光二极管和第四电阻后与电源VCC连接，所述风扇工作电路与三极管的集电极连接。Preferably, the switch circuit includes a third resistor, a fourth resistor, a triode and a light emitting diode, the third resistor is connected between the output terminal of the comparison circuit and the base of the triode, the emitter of the triode is grounded, and the The collector is connected to the power supply VCC after passing through the light-emitting diode and the fourth resistor in turn, and the working circuit of the fan is connected to the collector of the triode.
与现有技术相比，本实用新型的优点在于：本实用新型通过比较电路比较温度检测电路和温度基准电路的数值，根据比较结果控制开关电路的导通与关断，进而实现风扇工作电路控制风扇的开启与关闭。Compared with the prior art, the utility model has the advantages that: the utility model compares the values of the temperature detection circuit and the temperature reference circuit through the comparison circuit, controls the on and off of the switch circuit according to the comparison result, and then realizes the fan working circuit control Fan on and off.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1是本实用新型所述伺服驱动器的保护电路的电路图。Fig. 1 is a circuit diagram of the protection circuit of the servo driver described in the present invention.
具体实施方式Detailed ways
下面结合附图对本实用新型的优选实施例进行详细阐述，以使本实用新型的优点和特征能更易于被本领域技术人员理解，从而对本实用新型的保护范围做出更为清楚明确的界定。The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.
参阅图1所示，本实用新型提供一种伺服驱动器的保护电路，包括温度检测电路1、温度基准电路3、比较电路2、开关电路4、风扇工作电路5和风扇6，所述温度检测电路1和温度基准电路3与比较电路2的输入端连接，所述开关电路4与比较电路2的输出端连接，所述风扇工作电路5与开关电路4连接，所述风扇6与风扇工作电路5连接。Referring to Fig. 1, the utility model provides a protection circuit of a servo driver, comprising a temperature detection circuit 1, a temperature reference circuit 3, a comparison circuit 2, a switch circuit 4, a fan operating circuit 5 and a fan 6, and the temperature detection circuit 1 and the temperature reference circuit 3 are connected to the input terminal of the comparison circuit 2, the switch circuit 4 is connected to the output terminal of the comparison circuit 2, the fan working circuit 5 is connected to the switch circuit 4, and the fan 6 is connected to the fan working circuit 5 connect.
在本实用新型中，所述温度检测电路1包括第一电阻R1和热敏电阻RT，所述比较电路2为一比较器，所述温度基准电路3为一第二电阻R2；所述第一电阻R1的一端与电源VCC连接，其另一端经过热敏电阻RT接地，所述第一电阻R1和热敏电阻RT的连接端与比较器的输入端正极连接；所述第二电阻R2的一端与电源VCC连接，其另一端与比较器的输入端负极连接。In the utility model, the temperature detection circuit 1 includes a first resistor R1 and a thermistor RT, the comparison circuit 2 is a comparator, and the temperature reference circuit 3 is a second resistor R2; the first One end of the resistor R1 is connected to the power supply VCC, and the other end is grounded through the thermistor RT, and the connecting end of the first resistor R1 and the thermistor RT is connected to the positive input terminal of the comparator; one end of the second resistor R2 It is connected with the power supply VCC, and its other end is connected with the negative pole of the input terminal of the comparator.
在本实用新型中，所述开关电路4包括第三电阻R3、第四电阻R4、三极管Q1和发光二极管LED，所述第三电阻R3连接在比较电路2的输出端与三极管Q1的基极之间，所述三极管Q1的发射极接地，其集电极依次通过发光二极管LED和第四电阻R4后与电源VCC连接，所述风扇工作电路5与三极管Q1的集电极连接。In the utility model, the switch circuit 4 includes a third resistor R3, a fourth resistor R4, a transistor Q1 and a light emitting diode LED, and the third resistor R3 is connected between the output terminal of the comparison circuit 2 and the base of the transistor Q1. In between, the emitter of the triode Q1 is grounded, and its collector is connected to the power supply VCC after passing through the light-emitting diode LED and the fourth resistor R4 in sequence, and the fan working circuit 5 is connected to the collector of the triode Q1.
本实用新型的伺服驱动器的保护电路的工作原理为：在使用过程中，根据伺服驱动器内温度的变化热敏电阻RT的阻值也会发生变化，第一电阻R1和热敏电阻RT连接处的电压会发生相应变化，将该变化值与第二电阻R2端部的电压值进行比较，如该变化值大于第二电阻R2端部的电压值，则说明，伺服驱动器处于温度较高的状态，此时比较器U1输出高电压，驱动三极管Q1导通，同时发光二极管LED点亮(说明温度高)，风扇工作电路5启动，风扇6开始工作进行降温。The working principle of the protection circuit of the servo drive of the present utility model is: during use, the resistance value of the thermistor RT will also change according to the temperature change in the servo drive, and the connection between the first resistor R1 and the thermistor RT The voltage will change accordingly, compare the change value with the voltage value at the end of the second resistor R2, if the change value is greater than the voltage value at the end of the second resistor R2, it means that the servo driver is in a state of high temperature, At this time, the comparator U1 outputs a high voltage to drive the triode Q1 to conduct, and at the same time, the light-emitting diode LED lights up (indicating that the temperature is high), the fan working circuit 5 starts, and the fan 6 starts to work to cool down.
本实用新型通过比较电路比较温度检测电路和温度基准电路的数值，根据比较结果控制开关电路的导通与关断，进而实现风扇工作电路控制风扇的开启与关闭。The utility model compares the values of the temperature detection circuit and the temperature reference circuit through the comparison circuit, controls the conduction and shutdown of the switch circuit according to the comparison result, and then realizes the fan working circuit to control the fan on and off.
虽然结合附图描述了本实用新型的实施方式，但是专利所有者可以在所附权利要求的范围之内做出各种变形或修改，只要不超过本实用新型的权利要求所描述的保护范围，都应当在本实用新型的保护范围之内。Although the embodiment of the utility model has been described in conjunction with the accompanying drawings, the patent owner can make various deformations or modifications within the scope of the appended claims, as long as it does not exceed the protection scope described in the claims of the utility model, All should be within the protection scope of the present utility model.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208962.6U CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520208962.6U CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
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| CN201520208962.6U Expired - Fee Related CN204496314U (en) | 2015-04-07 | 2015-04-07 | A kind of protection circuit of servo-driver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511520A (en) * | 2016-01-15 | 2016-04-20 | 中山芯达电子科技有限公司 | Automatic thermal protection circuit |
| CN112491259A (en) * | 2020-11-23 | 2021-03-12 | 无锡科索电子有限公司 | Low-power-consumption switching power supply with fan |
-
2015
- 2015-04-07 CN CN201520208962.6U patent/CN204496314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511520A (en) * | 2016-01-15 | 2016-04-20 | 中山芯达电子科技有限公司 | Automatic thermal protection circuit |
| CN112491259A (en) * | 2020-11-23 | 2021-03-12 | 无锡科索电子有限公司 | Low-power-consumption switching power supply with fan |
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Granted publication date: 20150722 Termination date: 20160407 |