阅读说明：本技术 一种实现rk3128 arm平台系统低温启动的方法 (Method for realizing low-temperature starting of RK3128ARM platform system ) 是由 胡炎 刘泽 王强 王金鹏 于 2019-09-04 设计创作，主要内容包括：本发明公开了一种实现RK3128ARM平台系统低温启动的方法,包括CPU、温度传感器、逻辑电路和大功率MOS开关电路；所述CPU的GPIO端和温度传感器的输出端分别与逻辑电路串联连接；所述逻辑电路与大功率MOS开关电路串联连接；所述大功率MOS开关电路包括电源、大功率MOS管、加热电路和接地端口；所述电源、大功率MOS管、加热电路和接地端口依次串联在一起；所述大功率MOS管的控制端与逻辑电路的输出端连接；本发明设计合理,可靠性高,在－25℃及以下环境温度时,可以实现CPU及系统的正常启动,满足了RK3128ARM平台在工业控制领域中低温环境下的应用。(The invention discloses a method for realizing low-temperature starting of a RK3128ARM platform system, which comprises a CPU, a temperature sensor, a logic circuit and a high-power MOS switch circuit; the GPIO end of the CPU and the output end of the temperature sensor are respectively connected with the logic circuit in series; the logic circuit is connected with the high-power MOS switch circuit in series; the high-power MOS switch circuit comprises a power supply, a high-power MOS tube, a heating circuit and a grounding port; the power supply, the high-power MOS tube, the heating circuit and the grounding port are sequentially connected in series; the control end of the high-power MOS tube is connected with the output end of the logic circuit; the invention has reasonable design and high reliability, can realize the normal start of the CPU and the system at the environmental temperature of-25 ℃ and below, and meets the application of the RK3128ARM platform in the low-temperature environment in the industrial control field.)

1. A method for realizing low-temperature starting of a RK3128ARM platform system is characterized by comprising the following steps: the system comprises a CPU, a temperature sensor, a logic circuit and a high-power MOS switch circuit; the GPIO end of the CPU and the output end of the temperature sensor are respectively connected with the logic circuit in series; the logic circuit is connected with the high-power MOS switch circuit in series; the high-power MOS switch circuit comprises a power supply, a high-power MOS tube, a heating circuit and a grounding port; the power supply, the high-power MOS tube, the heating circuit and the grounding port are sequentially connected in series; the control end of the high-power MOS tube is connected with the output end of the logic circuit; the low-temperature starting method comprises the following steps: the method comprises the following steps that firstly, a system is powered on, a temperature sensor detects the ambient temperature, and when the ambient temperature is-25 ℃ or below, the output end of the temperature sensor outputs a logic high level; under the normal temperature environment, the output end of the temperature sensor outputs a logic low level; secondly, when the control end input of a high-power MOS tube in the high-power MOS switch circuit is a logic high level, the high-power MOS tube is opened, and a heating circuit arranged in the mainboard is started; when the control end input of a high-power MOS tube in the high-power MOS switch circuit is a logic low level, the high-power MOS tube is closed, and a heating circuit arranged in the mainboard is disconnected; and thirdly, after the temperature reaches the starting temperature of the CPU, starting the system, outputting a logic low level by the CPU through a port of the GPIO end after the system is started, and connecting the port to the control end of the high-power MOS tube through a logic circuit, so that the high-power MOS tube is closed, and a heating circuit arranged in the mainboard is disconnected.

2. The method for realizing the low-temperature boot of the RK3128ARM platform system as claimed in claim 1, wherein: the high-power MOS tube and the heating circuit built in the mainboard are connected in series, and the heating circuit built in the mainboard can be correspondingly turned on or off when the high-power MOS tube is turned on or turned off.

3. The method for realizing the low-temperature boot of the RK3128ARM platform system as claimed in claim 1, wherein: the power supply in the high-power MOS switch circuit can be directly connected with alternating current or connected with a storage battery.

Technical Field

The invention relates to a method for realizing low-temperature starting of a RK3128ARM platform system, and belongs to the technical field of industrial control.

Background

The RuiKe micro RK3128 chip is a quad-core chip based on quad-core ARM Cortex-A7 architecture, the dominant frequency can reach 1.3GHz to the maximum, a 40nm process is adopted, a Mali GPU image accelerator is integrated, 1080P H.265 codes can be decoded, excellent operation and graphic processing capabilities are achieved, a mainboard platform based on RK3128ARM CPU can be applied to various intelligent terminal devices, the platform cost performance is high, but the RK3128 CPU is a commercial product, the working temperature only supports 0-70 ℃, in the industrial control field, the working temperature of the devices is generally required to be-25-70 ℃, in the prior art, the platform can only be applied at the commercial temperature and cannot work in the industrial low-temperature environment (-25 ℃), and therefore, the application of the platform in the industrial control field is limited to a certain extent.

Disclosure of Invention

In view of the above technical problems, the present invention aims to: the method for realizing the low-temperature starting of the RK3128ARM platform system is low in cost and convenient to apply.

The technical solution of the invention is realized as follows: a method for realizing low-temperature starting of a RK3128ARM platform system comprises a CPU, a temperature sensor, a logic circuit and a high-power MOS switch circuit; the GPIO end of the CPU and the output end of the temperature sensor are respectively connected with the logic circuit in series; the logic circuit is connected with the high-power MOS switch circuit in series; the high-power MOS switch circuit comprises a power supply, a high-power MOS tube, a heating circuit and a grounding port; the power supply, the high-power MOS tube, the heating circuit and the grounding port are sequentially connected in series; the control end of the high-power MOS tube is connected with the output end of the logic circuit; the low-temperature starting method comprises the following steps: the method comprises the following steps that firstly, a system is powered on, a temperature sensor detects the ambient temperature, and when the ambient temperature is-25 ℃ or below, the output end of the temperature sensor outputs a logic high level; under the normal temperature environment, the output end of the temperature sensor outputs a logic low level; secondly, when the control end input of a high-power MOS tube in the high-power MOS switch circuit is a logic high level, the high-power MOS tube is opened, and a heating circuit arranged in the mainboard is started; when the control end input of a high-power MOS tube in the high-power MOS switch circuit is a logic low level, the high-power MOS tube is closed, and a heating circuit arranged in the mainboard is disconnected; and thirdly, after the temperature reaches the starting temperature of the CPU, starting the system, outputting a logic low level by the CPU through a port of the GPIO end after the system is started, and connecting the port to the control end of the high-power MOS tube through a logic circuit, so that the high-power MOS tube is closed, and a heating circuit arranged in the mainboard is disconnected.

Preferably, the high-power MOS transistor and the heating circuit built in the motherboard are connected in series, and the high-power MOS transistor correspondingly turns on or off the heating circuit built in the motherboard when turned on or turned off.

Preferably, a power supply in the high-power MOS switch circuit can be directly connected with alternating current or connected with a storage battery.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the method for realizing the low-temperature starting of the RK3128ARM platform system has the advantages of reasonable design and high reliability, can realize the normal starting of a CPU and the system at the ambient temperature of-25 ℃ and below, and meets the application of the RK3128ARM platform in the low-temperature environment in the field of industrial control.

Drawings

The technical scheme of the invention is further explained by combining the accompanying drawings as follows:

FIG. 1 is a schematic structural diagram of a method for realizing low-temperature starting of a RK3128ARM platform system according to the present invention;

wherein: 1. a CPU; 2. a temperature sensor; 3. a logic circuit; 4. a high power MOS switch circuit; 5. a power source; 6. a high-power MOS tube; 7. a heating circuit; 8. a ground port.

Detailed Description

The invention is described below with reference to the accompanying drawings.

Fig. 1 shows a method for realizing low-temperature start of an RK3128ARM platform system according to the present invention, which includes a CPU1, a temperature sensor 2, a logic circuit 3, and a high-power MOS switch circuit 4; the GPIO end of the CPU1 and the output end of the temperature sensor 2 are respectively connected with the logic circuit 3 in series; the logic circuit 3 is connected with the high-power MOS switch circuit 4 in series; the high-power MOS switch circuit 4 comprises a power supply 5, a high-power MOS tube 6, a heating circuit 7 and a grounding port 8; the power supply 5, the high-power MOS tube 6, the heating circuit 7 and the grounding port 8 are sequentially connected in series; and the control end of the high-power MOS tube 6 is connected with the output end of the logic circuit 3.

When in specific use, the low-temperature starting method comprises the following steps: the first step, the system is powered on, the temperature sensor 2 detects the ambient temperature, and when the ambient temperature is-25 ℃ or below, the output end of the temperature sensor 2 outputs a logic high level; under the normal temperature environment, the output end of the temperature sensor 2 outputs a logic low level; secondly, when the control end input of a high-power MOS tube 6 in the high-power MOS switch circuit 4 is in a logic high level, the high-power MOS tube 6 is turned on, and a heating circuit 7 arranged in a mainboard is started; when the control end input of the high-power MOS tube 6 in the high-power MOS switch circuit 4 is at a logic low level, the high-power MOS tube 6 is closed, and a heating circuit 7 arranged in the mainboard is disconnected; and thirdly, after the temperature reaches the starting temperature of the CPU1, starting the system, outputting a logic low level by the CPU1 through a port of the GPIO end after the system is started, and connecting the port to the control end of the high-power MOS tube 6 through the logic circuit 3, so that the high-power MOS tube 6 is closed, and the heating circuit 7 arranged in the mainboard is disconnected.

In order to keep the consistency of the high-power MOS tube 6 and the heating circuit 7 arranged in the mainboard, the high-power MOS tube 6 and the heating circuit 7 arranged in the mainboard are connected in series, and the heating circuit 7 arranged in the mainboard is correspondingly turned on or off when the high-power MOS tube 6 is turned on or off.

In order to improve the selection and the standby of various power supplies 5, the power supply 5 in the high-power MOS switch circuit 4 can be directly connected with alternating current or connected with a storage battery.

The method for realizing the low-temperature starting of the RK3128ARM platform system has the advantages of reasonable design and high reliability, can realize the normal starting of the CPU1 and the system at normal temperature or at the ambient temperature of-25 ℃ and below, and meets the application of the RK3128ARM platform in the low-temperature environment in the field of industrial control.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.