CN103309373A - Low-temperature single chip microcomputer starting and working method and low-temperature running single chip microcomputer system for achieving method - Google Patents
Low-temperature single chip microcomputer starting and working method and low-temperature running single chip microcomputer system for achieving method Download PDFInfo
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Abstract
The invention relates to a low-temperature single chip microcomputer starting and working method and a low-temperature running single chip microcomputer system for achieving the method and belongs to the field of electronic technological application. The problems that an existing single chip microcomputer cannot be started in a low-temperature environment and cannot stably accurately work in the low-temperature environment are solved. The method comprises the steps of adopting a short time heating lamp to instantaneously heat the working environment of the single chip microcomputer when the single chip microcomputer is started; monitoring the temperature of the working environment of the single chip microcomputer in the working process of the single chip microcomputer, and controlling the heating lamp to control the temperature of the working environment of the single chip microcomputer according to the temperature. A capacitor C in the low-temperature running single chip microcomputer system, a short time heating lamp J1 and a current-limiting and discharge resistor R1 are in series connection between an anode and a cathode of a direct current power supply of the single chip microcomputer, the temperature signal output end of a digital temperature sensor W is connected with the temperature collecting signal input end of the single chip microcomputer, and the single chip microcomputer controls a controllable heating lamp J2 to be turned on or turned off through a driving field-effect tube T. According to the low-temperature single chip microcomputer starting and working method, low-temperature starting and running of the single chip microcomputer system can be guaranteed.
Description
Technical field
The invention belongs to the application of electronic technology field.
Background technology
In electronic technology, single-chip microcomputer is a kind of important microprocessor chip.Single Chip Microcomputer (SCM) system is a kind of widely used again powerful digital electronic system.The working temperature of single-chip microcomputer is generally between subzero 20 degrees centigrade to 60 degrees centigrade above freezing.In this temperature range, single-chip microcomputer can work, but exceeds after this temperature range, and single-chip microcomputer just can not work, and then affects the work of whole single-chip computer control system.Because the restriction of this parameter so that Single Chip Microcomputer (SCM) system be restricted in the application of cold district.At cold district, because environment temperature is excessively low, causing some to adopt single-chip microcomputer is that the equipment of core or problem that instrument and meter can't normally start often exist, also existing some to adopt single-chip microcomputer is that equipment or the instrument and meter of core can work by day, and after nocturnal temperature reduces, the problem that can't work.
Summary of the invention
Be subjected to the restriction of himself performance in order to solve existing single-chip microcomputer, can't start in low temperature environment and serviceability is affected even can't works in low temperature environment problem, the present invention has designed the startup of a kind of low temperature single-chip microcomputer and method of work and has realized the cold operation Single Chip Microcomputer (SCM) system of the method.
Low temperature single-chip microcomputer of the present invention starts and method of work is:
When single-chip microcomputer starts, adopt the Short Time Heating lamp that single-chip microcomputer place working environment is carried out instantaneous heating, be increased to the environment temperature that single-chip microcomputer adapts to so that described operating ambient temperature is instantaneous, and then guarantee the normal startup of single-chip microcomputer;
In the single-chip microcomputer course of work, temperature by temperature sensor Real-time Collection single-chip microcomputer working environment, when the temperature that gathers is less than or equal to minimum operating temperature, starting another heating lamp heats single-chip microcomputer place working environment, when the temperature that gathers during more than or equal to maximum operating temperature, stop another heating lamp single-chip microcomputer place working environment is heated.
The temperature of above-mentioned collection can be the temperature of actual acquisition, can also be the medial temperature that obtains according to a plurality of temperature computation that gather.
Above-mentioned minimum operating temperature and maximum operating temperature are to arrange according to the parameter of single-chip microcomputer itself, wherein: minimum operating temperature is higher than the lower limit of the working temperature in the single-chip microcomputer performance parameter, maximum operating temperature is lower than the upper limit of the working temperature in the single-chip microcomputer performance parameter, and then guarantees that single-chip microcomputer is operated in its temperature environment that is fit to.
Realize that above-mentioned low temperature single-chip microcomputer starts and the cold operation Single Chip Microcomputer (SCM) system of method of work comprises Short Time Heating lamp J1, capacitor C, current limliting and discharge resistance R1, controlled heating lamp J2, drive field effect transistor T, pull-up resistor R2, current-limiting resistance R3, single-chip microcomputer and digital temperature sensor W, capacitor C, Short Time Heating lamp J1 and current limliting and discharge resistance R1 are connected between the positive pole and negative pole of dc power supply of single-chip microcomputer, the end of digital temperature sensor W by pull-up resistor R2 be connected the positive pole of dc power supply and connect, the end of described digital temperature sensor W is connected with the other end and is connected two temperature acquisition signal input parts with single-chip microcomputer and connects, be in series with current-limiting resistance R3 between the other end of described digital temperature sensor W and the positive pole of dc power supply, controlled heating lamp J2 and driving field effect transistor T, the digital temperature sensor that the control end of described driving field effect transistor T connects single-chip microcomputer drives signal output part.
Described cold operation Single Chip Microcomputer (SCM) system can also comprise housing, and described Short Time Heating lamp J1, capacitor C, current limliting and discharge resistance R1, controlled heating lamp J2, driving field effect transistor T, pull-up resistor R2, current-limiting resistance R3, single-chip microcomputer and digital temperature sensor W are enclosed in this enclosure interior.This housing can be realized the function that is incubated, and then reduces the number of times that starts controlled heating lamp, increases the serviceable life of this cold operation Single Chip Microcomputer (SCM) system.
Embedding in the above-mentioned single-chip microcomputer has the temperature software model, and described software module comprises:
Gather the temperature collecting cell of digital temperature sensor W temperature;
Store the temperature that gathers in the temperature array acquired data storage unit;
Temperature data according to the multi collect in the temperature array in the data storage cell calculates the medial temperature acquiring unit that obtains medial temperature;
Judge whether medial temperature is less than or equal to minimum operating temperature, and be to send enabling signal when being to the minimum operating temperature judging unit of heating lamp control module in judged result;
Whether judge medial temperature more than or equal to maximum operating temperature, and be to send stop signal when being to the maximum operating temperature judging unit of heating lamp control module in judged result;
Be used for when receiving enabling signal, starting controlled heating lamp begins to heat, control controlled heating lamp stopped heating when receiving stop signal heating lamp control module.
Low temperature single-chip microcomputer of the present invention starts and method of work, adopt the environment temperature of the method raising single-chip microcomputer place working environment of the instantaneous heating of start, and then so that single-chip microcomputer can start, after the startup, in the course of the work, the monitoring of the environment temperature of passing through and to the control of heating lamp realizes the control to environment temperature, and then guarantee that the single-chip microcomputer system works in suitable temperature range, guarantees the reliability service of Single Chip Microcomputer (SCM) system.
Description of drawings
Fig. 1 is the circuit theory diagrams of cold operation Single Chip Microcomputer (SCM) system of the present invention.
Fig. 2 is the workflow diagram that is embedded in the software control module of single-chip microcomputer inside of the present invention.
Embodiment
Embodiment one, the described low temperature single-chip microcomputer startup of present embodiment and method of work are:
When single-chip microcomputer starts, adopt the Short Time Heating lamp that single-chip microcomputer place working environment is carried out instantaneous heating, be increased to the environment temperature that single-chip microcomputer adapts to so that described operating ambient temperature is instantaneous, and then guarantee the normal startup of single-chip microcomputer;
In the single-chip microcomputer course of work, temperature by temperature sensor Real-time Collection single-chip microcomputer working environment, when the temperature that gathers is less than or equal to minimum operating temperature, starting another heating lamp heats single-chip microcomputer place working environment, when the temperature that gathers during more than or equal to maximum operating temperature, stop another heating lamp single-chip microcomputer place working environment is heated.
The temperature of above-mentioned collection can be the temperature of actual acquisition, can also be the medial temperature that obtains according to a plurality of temperature computation that gather.
Above-mentioned minimum operating temperature and maximum operating temperature are to arrange according to the parameter of single-chip microcomputer itself, wherein: minimum operating temperature is higher than the lower limit of the working temperature in the single-chip microcomputer performance parameter, maximum operating temperature is lower than the upper limit of the working temperature in the single-chip microcomputer performance parameter, and then guarantees that single-chip microcomputer is operated in its temperature environment that is fit to.
Embodiment two, present embodiment is described to be to realize that embodiment one described low temperature single-chip microcomputer starts and the cold operation Single Chip Microcomputer (SCM) system of method of work, this system comprises Short Time Heating lamp J1, capacitor C, current limliting and discharge resistance R1, controlled heating lamp J2, drive field effect transistor T, pull-up resistor R2, current-limiting resistance R3, single-chip microcomputer and digital temperature sensor W, capacitor C, Short Time Heating lamp J1 and current limliting and discharge resistance R1 are connected between the positive pole and negative pole of dc power supply of single-chip microcomputer, the end of digital temperature sensor W by pull-up resistor R2 be connected the positive pole of dc power supply and connect, the end of described digital temperature sensor W is connected with the other end and is connected two temperature acquisition signal input parts with single-chip microcomputer and connects, be in series with current-limiting resistance R3 between the other end of described digital temperature sensor W and the positive pole of dc power supply, controlled heating lamp J2 and driving field effect transistor T, the digital temperature sensor that the control end of described driving field effect transistor T connects single-chip microcomputer drives signal output part.
Embodiment three, present embodiment are the further restrictions to embodiment two described cold operation Single Chip Microcomputer (SCM) system, in the present embodiment, the model of described Short Time Heating lamp J1 is C9-3V, its operating voltage is 3 volts, the appearance value of capacitor C is that 20 μ F, withstand voltage are 10 volts, and the resistance of current limliting and discharge resistance R1 is 5.1 ohm.
The design parameter of Short Time Heating lamp J1, capacitor C and the discharge resistance R1 that limits in the present embodiment, under this parameter, the instantaneous heating power of Short Time Heating lamp J1 is 0.75 watt.
Embodiment four, present embodiment are the further restrictions to embodiment two described cold operation Single Chip Microcomputer (SCM) system, increased housing in the present embodiment, described Short Time Heating lamp J1, capacitor C, current limliting and discharge resistance R1, controlled heating lamp J2, driving field effect transistor T, pull-up resistor R2, current-limiting resistance R3, single-chip microcomputer and digital temperature sensor W are enclosed in this enclosure interior.
This housing can be realized the function that is incubated, and then reduces the number of times that starts controlled heating lamp, increases the serviceable life of this cold operation Single Chip Microcomputer (SCM) system.
Embodiment five, present embodiment are the further restrictions to embodiment three described cold operation Single Chip Microcomputer (SCM) system, and in the present embodiment, embedding in the single-chip microcomputer has the temperature software model, and described software module comprises:
Gather the temperature collecting cell of digital temperature sensor W temperature;
Store the temperature that gathers in the temperature array acquired data storage unit;
Temperature data according to the multi collect in the temperature array in the data storage cell calculates the medial temperature acquiring unit that obtains medial temperature;
Judge whether medial temperature is less than or equal to minimum operating temperature, and be to send enabling signal when being to the minimum operating temperature judging unit of heating lamp control module in judged result;
Whether judge medial temperature more than or equal to maximum operating temperature, and be to send stop signal when being to the maximum operating temperature judging unit of heating lamp control module in judged result;
Be used for when receiving enabling signal, starting controlled heating lamp begins to heat, control controlled heating lamp stopped heating when receiving stop signal heating lamp control module.
Single-chip microcomputer in embodiment six, the cold operation Single Chip Microcomputer (SCM) system of the present invention can be existing any single-chip microcomputer, for example: C8051F020, when adopting the single-chip microcomputer of this model, the P0.0 of this single-chip microcomputer can be connected with the two ends of digital temperature sensor with P0.1, realize driving and temperature acquisition to digital temperature sensor.The physical circuit schematic diagram illustrates the principle of work of cold operation Single Chip Microcomputer (SCM) system of the present invention referring to shown in Figure 1 below with reference to Fig. 1:
When Single Chip Microcomputer (SCM) system is started working, the direct supply power supply that goes into operation, because the voltage at capacitor C two ends can not transition, therefore in the zero hour of DC power supply, the voltage at its two ends is zero, at this moment, the voltage of dc power supply output just directly is loaded into the two ends of Short Time Heating lamp J1, and because the resistance of current limliting and discharge resistance R1 is very little, most of voltage can be loaded into the two ends of this Short Time Heating lamp J1, thereby this Short Time Heating lamp J1 that makes, be lit luminously, realize heating function; Along with the lengthening of power-on time, capacitor C realizes charging by current limliting and discharge resistance R1, so that the voltage at controlled heating lamp J1 two ends is more and more lower, and then stopped heating.Power by designing suitable Short Time Heating lamp 1 and the resistance of discharge resistance R1 can be with instantaneous being heated on the minimum heating-up temperature of temperature of the working environment of single-chip microcomputer when realizing starting this Short Time Heating lamp J1.
At the single-chip microcomputer duration of work, temperature by digital temperature sensor Real-time Collection single-chip microcomputer place environment, when described environment temperature during less than minimum heating-up temperature, single-chip microcomputer drives the field effect transistor conducting by the control of P0.0 mouth output high level, thereby make controlled heating lamp light heating, environment is heated, so that environment temperature raises.When environment temperature was higher than maximum heating temperature, single-chip microcomputer drove field effect transistor by the control of P0.0 mouth output low level and turn-offs, thereby makes controlled heating lamp stopped heating.
The instantaneous heating function of start of the present invention can so that Single Chip Microcomputer (SCM) system in low temperature environment, start, after the startup, in the course of the work, the monitoring of the environment temperature of passing through and to the control of heating lamp, realization is to the control of environment temperature, and then guarantee that the single-chip microcomputer system works in suitable temperature range, guarantees the reliability service of Single Chip Microcomputer (SCM) system.
Claims (7)
1. the low temperature single-chip microcomputer starts and method of work, it is characterized in that, described method is:
When single-chip microcomputer starts, adopt the Short Time Heating lamp that single-chip microcomputer place working environment is carried out instantaneous heating, be increased to the environment temperature that single-chip microcomputer adapts to so that described operating ambient temperature is instantaneous, and then guarantee the normal startup of single-chip microcomputer;
In the single-chip microcomputer course of work, temperature by temperature sensor Real-time Collection single-chip microcomputer working environment, when the temperature that gathers is less than or equal to minimum operating temperature, starting another heating lamp heats single-chip microcomputer place working environment, when the temperature that gathers during more than or equal to maximum operating temperature, stop another heating lamp single-chip microcomputer place working environment is heated.
2. low temperature single-chip microcomputer according to claim 1 starts and method of work, it is characterized in that, but the temperature of the temperature actual acquisition of described collection, or the medial temperature that obtains according to the multi collect temperature computation.
3. low temperature single-chip microcomputer according to claim 1 starts and method of work, it is characterized in that, described minimum operating temperature and maximum operating temperature are to arrange according to the parameter of single-chip microcomputer itself, wherein: minimum operating temperature is higher than the lower limit of the working temperature in the single-chip microcomputer performance parameter, and maximum operating temperature is lower than the upper limit of the working temperature in the single-chip microcomputer performance parameter.
4. realize that low temperature single-chip microcomputer claimed in claim 1 starts and the cold operation Single Chip Microcomputer (SCM) system of method of work, it is characterized in that, described this system comprises Short Time Heating lamp (J1), electric capacity (C), current limliting and discharge resistance (R1), controlled heating lamp (J2), drive field effect transistor (T), pull-up resistor (R2), current-limiting resistance (R3), single-chip microcomputer and digital temperature sensor (W), electric capacity (C), Short Time Heating lamp (J1) and current limliting and discharge resistance (R1) are connected between the positive pole and negative pole of dc power supply of single-chip microcomputer, one end of digital temperature sensor (W) is by pull-up resistor (R2) and the positive pole connection of dc power supply of being connected, one end of described digital temperature sensor (W) is connected with the other end and is connected two temperature acquisition signal input parts with single-chip microcomputer and connects, be in series with current-limiting resistance (R3) between the other end of described digital temperature sensor (W) and the positive pole of dc power supply, controlled heating lamp (J2) and driving field effect transistor (T), the digital temperature sensor that the control end of described driving field effect transistor (T) connects single-chip microcomputer drives signal output part.
5. cold operation Single Chip Microcomputer (SCM) system according to claim 4, it is characterized in that, the model of described Short Time Heating lamp (J1) is C9-3V, and its operating voltage is 3 volts, the appearance value of electric capacity (C) is that 20 μ F, withstand voltage are 10 volts, and the resistance of current limliting and discharge resistance (R1) is 5.1 ohm.
6. cold operation Single Chip Microcomputer (SCM) system according to claim 4, it is characterized in that, described system also comprises housing, and described Short Time Heating lamp (J1), electric capacity (C), current limliting and discharge resistance (R1), controlled heating lamp (J2), driving field effect transistor (T), pull-up resistor (R2), current-limiting resistance (R3), single-chip microcomputer and digital temperature sensor (W) are enclosed in this enclosure interior.
7. cold operation Single Chip Microcomputer (SCM) system according to claim 4 is characterized in that, embedding in the single-chip microcomputer has the temperature software model, and described software module comprises:
Gather the temperature collecting cell of digital temperature sensor (W) temperature;
Store the temperature that gathers in the temperature array acquired data storage unit;
Temperature data according to the multi collect in the temperature array in the data storage cell calculates the medial temperature acquiring unit that obtains medial temperature;
Judge whether medial temperature is less than or equal to minimum operating temperature, and be to send enabling signal when being to the minimum operating temperature judging unit of heating lamp control module in judged result;
Whether judge medial temperature more than or equal to maximum operating temperature, and be to send stop signal when being to the maximum operating temperature judging unit of heating lamp control module in judged result;
Be used for when receiving enabling signal, starting controlled heating lamp begins to heat, control controlled heating lamp stopped heating when receiving stop signal heating lamp control module.
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| CN104763547A (en) * | 2014-01-08 | 2015-07-08 | 罗伯特·博世有限公司 | Method for heating output stage of control unit of motor vehicle |
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| CN107390741A (en) * | 2017-07-31 | 2017-11-24 | 北京宇航系统工程研究所 | A kind of temprature control method |
| CN108583977A (en) * | 2018-06-28 | 2018-09-28 | 温州赤焰科技有限公司 | The instantaneously heated bundling device of direct current safe voltage and its transient heating control circuit |
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