CN115903552A - A control method, control device, and computer-readable medium for device startup - Google Patents
A control method, control device, and computer-readable medium for device startup Download PDFInfo
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Abstract
The invention provides a control method, control equipment and a computer readable medium for equipment startup, wherein the control method comprises the following steps: acquiring a first temperature detection value; when the first temperature detection value is smaller than a preset temperature threshold value, starting by using a low-temperature starting strategy; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein the temperature detection module, the processor and the like in the low-speed stable operation stage are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the machine is started, the service life is prolonged, and the accuracy of detected information is ensured.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a power tool, and more particularly, to a control method, a control device, and a computer readable medium for device activation.
[ background of the invention ]
With the improvement of the automation level of the tool, the electric tool can be applied to various different complex scenes; however, due to the diversification of the application scenarios of the electric tool, in some severe environments, such as low temperature, etc., the electric tool may need a large starting current according to normal starting in the low temperature environment, but the electric tool is large in size, easily damages an electronic switching element in the tool, such as a MOS transistor, etc., and may enter an overcurrent protection state, resulting in abnormal tool starting or failed tool starting; particularly, a tool powered by a battery pack is greatly influenced by the temperature of the current battery, so that the voltage of the battery pack is too low due to low influence, the power supply is limited, and the service life of the battery pack is influenced.
In order to solve the above problems, a low-temperature starting method is proposed in the prior art, which includes: acquiring the temperature of the electric tool; judging whether the temperature of the electric tool is smaller than a preset temperature threshold value or not; if the temperature of the electric tool is smaller than a preset temperature threshold, judging whether the rotating speed of the motor is smaller than a preset rotating speed threshold which is correspondingly set in a duty ratio interval where the current duty ratio is located; if the rotating speed of the motor is smaller than the preset rotating speed threshold, reducing the duty ratio of the PWM signal to a preset duty ratio threshold; after the duty ratio of the PWM signal is reduced to the preset duty ratio threshold value, increasing the duty ratio of the PWM signal by a preset duty ratio increment; if the rotating speed of the motor is greater than or equal to the preset rotating speed threshold value, increasing the duty ratio of the PWM signal by another preset duty ratio increasing amount; judging whether the current duty ratio is greater than or equal to a preset final duty ratio or not; and if the current duty ratio is equal to the final duty ratio, outputting a PWM signal of the final duty ratio to the driving circuit so as to enable the motor to operate at the final rotating speed. In the scheme, the rotation speed of the motor is repeatedly changed every time, wherein the rotation speed is increased, then is reduced and then is increased; therefore, whether the current environmental conditions meet the requirements of normal starting or not is verified through one-time gradual rise of the rotating speed.
However, the above solution has the following problems: 1. in the process, the running environment and the state of the motor need to be continuously monitored, and at the moment, relevant devices such as a processor on a tool enter a high-load state when the tool is started, so that the processor and the relevant devices are easily damaged, the monitored information is inaccurate at the moment, and the service life is influenced; 2. in the temperature detection process, an additional temperature sensor is required to be added for detecting the ambient temperature, the device layout of the existing tool is changed, and the cost of the tool is increased.
Accordingly, there is a need for an improved power tool that overcomes the deficiencies of the prior art.
[ summary of the invention ]
In view of the disadvantages of the prior art, the present invention provides an electric tool which has an optimized structure and can perform stable low-temperature starting.
The invention can adopt the following technical scheme to solve the problems in the prior art: a control method for device startup, the control method comprising:
a detection step: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value;
a judging step: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage;
wherein the temperature detection step is triggered when an operating phase is over.
The further improvement scheme is as follows: the running speed of the low-speed stable running stage is less than that of the variable-speed running stage.
The further improvement scheme is as follows: the low-temperature start strategy further comprises detecting a speed control value, and when the speed control value meets a speed control threshold value, the control equipment is switched from a low-speed stable operation stage to a variable-speed operation stage.
The further improvement scheme is as follows: and when the low-speed stable operation stage is finished, triggering a temperature detection and judgment step, and then determining whether to continue executing a low-temperature starting strategy or to perform normal starting according to a judgment result.
The further improvement scheme is as follows: the device includes a heat generating element, and the first temperature detection value is a temperature of the heat generating element.
The present invention also provides a control device for implementing the above method, the control device being configured to control device start-up, the control device comprising:
a detection module: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value;
a judging module: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage.
The further improvement scheme is as follows: the running speed of the low-speed stable running stage is less than that of the variable-speed running stage.
The further improvement scheme is as follows: the low-temperature start strategy further comprises detecting a speed control value, and when the speed control value meets a speed control threshold value, the control equipment is switched from a low-speed stable operation stage to a variable-speed operation stage.
The invention also provides a control device, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor realizes the method when executing the computer program.
The invention also provides a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a control method, control equipment and a computer readable medium for equipment startup, wherein the control method comprises the following steps: a detection step: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value; a judging step: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein the temperature detection module, the processor and the like in the low-speed stable operation stage are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the machine is started, the service life is prolonged, and the accuracy of detected information is ensured.
[ description of the drawings ]
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
FIG. 1 is a flow chart of a method of a preferred embodiment of the present invention;
FIG. 2 is a waveform illustrating the current variation according to the preferred embodiment of the present invention;
FIG. 3 is a waveform illustrating a plurality of low speed stable operation phase changes in accordance with a preferred embodiment of the present invention;
FIG. 4 is a waveform illustrating a plurality of variable speed operating phase changes in accordance with a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of the preferred embodiment of the present invention.
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The electric tool/electric equipment described in the invention can be garden tools, hand-held tools, or other automatic equipment which needs to work in low temperature environment; it is within the scope of the present invention that the above-described apparatus/tools can employ the subject matter of the following disclosure. The invention is particularly suitable for equipment which can be used and operated in low-temperature environment.
Example one
The invention solves the problems of the prior art by adopting the following technical scheme: a control method for device startup, as shown in fig. 1, the control method comprising:
a detection step: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value;
a judging step: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage.
In the prior art, as the internal mechanical structure of part of electric tools such as an electric hammer is complex, the problem that the machine can not be started due to overlarge starting current in a low-temperature environment, so that the machine generates overcurrent or short-circuit faults can occur; in view of the above problems, the present invention provides a new control method, which enables a low-temperature start strategy when the temperature is too low, and the low-temperature start strategy comprises at least one low-speed stable operation stage and at least one variable-speed operation stage. Wherein, in the low-speed stable operation stage, the motor operates at a fixed speed; during the variable speed operating phase, the speed of the motor continues to increase in fixed increments.
In a preferred embodiment, in a low-speed stable operation stage, the temperature detection module, the processor and the like are in a standby state, and real-time information detection and processing are not performed, so that the pressure of the temperature detection module and the processor during startup can be effectively reduced, the temperature detection module and the processor are prevented from entering a high-load state immediately after startup, after the first low-speed stable operation stage is finished, the temperature detection and judgment step is started again, and then whether to continue to execute a low-temperature startup strategy or perform normal startup is determined according to the judgment result.
When the first stage is a low-speed stable operation stage, the motor is controlled to operate at a smaller initial speed, the initial speed is a fixed value, the time of the first low-speed stable operation stage is also a fixed value, the two fixed values can be set by an operator, and the fixed values can be stored in a related storage module as fixed information before the equipment leaves a factory, so that the equipment can be called and operated directly.
In a preferred embodiment, the cold start strategy further comprises detecting a speed control value, and the control device performs a switching of the operation phase, such as a switching from a low-speed stable operation phase to a variable speed operation phase, when the speed control value satisfies a speed control threshold. Preferably, the speed control value includes a current sum, or a second temperature detection value. When the current is taken as a control value, exemplarily, the next low-speed stage is entered when the current is reduced to 2 times 'no-load current', wherein the change of the current is shown in fig. 2; wherein, the second low-speed stage can be a low-speed stable operation stage or a variable-speed operation stage. In the field, the no-load current is a fixed value generally, and the setting is completed when the equipment is out of the field and is stored in a storage module of the equipment; when the temperature is used as the control value, the control device enters the next low-temperature operating phase when the new temperature detection value is increased by a fixed value, for example by 20 °, compared to the external ambient temperature. Wherein the speed control value may be plural to correspond to different stages.
In a preferred embodiment, the cold start strategy further comprises: after the first low-speed stable operation stage is finished, the temperature detection and judgment steps are started again, and when the temperature T is still smaller than the preset temperature threshold value T max And when the temperature is greater than the second temperature threshold, the second low-speed stable operation stage is entered, as shown in fig. 3, where the second temperature threshold may be set by the human-computer interaction module, and may be set to one or more values according to actual requirements, for example, set to 0.3T max 、0.5T max 、0.8T max And the like.
Wherein, the speed of the motor in the second low-speed stable operation stage is greater than the speed of the motor in the first low-speed stable operation stage; the speeds of different low-speed stable operation stages are different, and the speed variation can be manually set through a human-computer interaction module or calculated according to the actual environment, such as the temperature variation; when the speed V is obtained from the change in temperature, the following formula can be used for calculation:
wherein, T max The temperature value is a preset temperature threshold value, namely a temperature value allowing the motor to normally work; t is 0 The temperature value is measured for the first time after starting up, namely a first temperature detection value; t is the current temperature value, i.e. at the current operating stepAt the end of the segment, a second temperature value, generally T, is measured>T 0 ；V max Is the idling speed, namely the speed of the motor in the idling state.
Preferably, the time of each low-speed stable operation stage can be manually set through the human-computer interaction module, and can also be set according to environmental information, such as temperature, and when the operation time t is set according to the temperature, the following formula can be adopted for calculation:
wherein, t 0 The time value is a preset time value, which can be set by a user of the device through a human-computer interaction module, or a default value can be directly called from a storage module of the device.
According to the invention, a plurality of stages are set in the low-temperature starting strategy, and each stage operates according to the calculated time, so that the detection and judgment frequency of the temperature detection module and the processor is effectively reduced, the data transmission is reduced, the load capacity of the processor is reduced, and the service life is prolonged.
In a preferred embodiment, the low-temperature start strategy further comprises a step of detecting and judging the temperature again after the previous low-speed stable operation stage is finished, and when the temperature is still smaller than a preset temperature threshold and larger than a second temperature threshold, a variable-speed operation stage is started; the second temperature threshold may be set by the human-computer interaction module, and may be set to one or more according to actual requirements, for example, set to 0.3T max 、0.5T max 、0.8T max And the like.
Preferably, the time of the low-speed stable operation stage may be manually set by a human-computer interaction module, or may be set according to environmental information, such as temperature, and when the operation time t is set according to the temperature, the following formula may be used for calculation:
wherein, t 0 The time value is a preset time value, which can be set by a user of the device through a human-computer interaction module, or a default value can be directly called from a storage module of the device.
Preferably, during said variable speed operating phase, the speed of the motor is continuously increased by fixed increments; the increment refers to the motor speed variation in unit time, can be set by a user of the equipment through a man-machine interaction module, and can also be directly called a default value from a storage module of the equipment; and may also be set based on environmental information, such as current or temperature changes.
When the determination is performed according to the temperature, the temperature change amount | Δ T | and/or the current change amount | Δ I | of the low-speed stable operation stage are obtained, and the increment Δ V is determined according to the temperature change amount | Δ T | and/or the current change amount | Δ I |, and in a preferred embodiment, the increment Δ V is calculated in the following manner:
ΔV＝a*|ΔT|+b*|ΔI|
wherein a and b are numbers greater than or equal to 0, and a + b >0; the specific value is set when the equipment leaves a factory, and can be directly called from a storage module of the equipment when the equipment is used.
Preferably, the time of the variable-speed operation stage can be manually set through a human-computer interaction module, and can also be determined according to equipment information, environmental information and the like, such as the rotating speed, the temperature and the like of the motor; preferably, it can be calculated by the following formula:
wherein, V 0 The starting speed of the variable speed operation stage is generally the same as the speed at the end of the rest of the previous stages; c is a constant coefficient which can be set by a machine operator or can directly call a default value from a storage module of the equipment; the determination can also be carried out according to temperature information; when temperature information is usedWhen the line is determined, the line can be calculated by adopting the following formula:
in a preferred embodiment, as shown in fig. 4, the low-temperature start strategy includes two consecutive variable-speed operating phases, and when the variable-speed operating phase has no low-speed stable operating phase and is the first operating phase, in the variable-speed operating phase, the speed increment of the motor can be set by a user of the device through the human-computer interaction module, or a default value can be directly called from a storage module of the device.
When the first phase is a variable-speed operation phase, the motor is controlled to operate at a smaller initial speed, the initial speed is a fixed value, the time of the first variable-speed stable operation phase is also a fixed value, the speed increment of the first variable-speed stable operation phase is also a fixed value, the three fixed values can be set by an operator, and can also be stored in a related storage module as fixed information before the equipment leaves a factory so as to be convenient for directly calling and operating.
When the low-speed stable operation stage does not exist before the variable-speed operation stage and is not the first operation stage, the speed increment of the motor can be set by a user of the equipment through a man-machine interaction module, or a default value is directly called from a storage module of the equipment, and can be determined according to the change of current; the method specifically comprises the following steps: obtaining a temperature variation | Δ T | and/or a current variation | Δ I | of a previous variable speed operation stage, and determining the increment Δ V according to the temperature variation | Δ T | and/or the current variation | Δ I |, wherein in a preferred embodiment, the increment Δ V is calculated in the following manner:
ΔV＝a*|ΔT|+b*|ΔI|
wherein a and b are numbers greater than or equal to 0, and a + b >0; the specific value is set when the equipment is out of the field, and can be directly called from a storage module of the equipment when in use.
The determination mode of the time of the variable speed operation stage is the same as that of the scheme described in the scheme, namely manual setting can be carried out through a human-computer interaction module, and the time can also be determined according to equipment information, environmental information and the like, such as the rotating speed, the temperature and the like of a motor; preferably, it can be calculated by the following formula:
wherein, V 0 The starting speed of the variable speed operation stage is generally the same as the speed at the end of the rest of the previous stages; c is a constant coefficient which can be set by a machine operator or can directly call a default value from a storage module of the equipment; the determination can also be carried out according to temperature information; when the temperature information is used for determination, the following formula can be used for calculation:
wherein the maximum value of the speed in the variable speed operation stage is V max Once the speed reaches V max Even if the speed change operation stage is still performed according to the determined time, the speed of the motor is not changed any more.
In the scheme provided by the invention, the low-temperature starting strategy can consist of at least one low-speed stable operation stage and at least one variable-speed operation stage, and also can only comprise the operation speeds of a plurality of variable-speed operation stages or a plurality of variable-speed operation stages; when two different phases are included simultaneously, the low-speed stable operation phase precedes the variable-speed operation phase; and the running speed of the low-speed stable running stage is less than that of the variable-speed running stage.
According to the invention, a plurality of stages are set in the low-temperature starting strategy, and each stage operates according to the calculated time, so that the detection and judgment frequency of the temperature detection module and the processor is effectively reduced, the data transmission is reduced, the load capacity of the processor is reduced, and the service life is prolonged.
The invention provides an operation stage switching strategy using a speed control value and time, preferably, an equipment user can select operation stage switching to switch according to the time t or according to the speed control value; meanwhile, two kinds of switching policies may also be used simultaneously, that is, switching is performed when at least one of the time switching condition and the speed control value switching condition is satisfied.
The low-temperature starting strategy provided by the invention can be used for adjusting stages according to actual requirements, and at least one low-speed stable operation stage and/or at least one variable-speed operation stage are/is set; the control is refined, the load pressure of the processor is effectively reduced, the service life is prolonged, and the running reliability of the machine is guaranteed.
In a preferred embodiment, the apparatus includes a heat generating element, and the first temperature detection value is a temperature of the heat generating element. Preferably, the heating element may be an MOS transistor, and the temperature detection module is configured to detect a temperature at the MOS transistor. Generally speaking, in order to ensure the normal operation of the equipment, a temperature detection module is arranged at the MOS tube to determine the state of the MOS tube; in the invention, the acquired temperature detection value is the temperature of the heating element such as the MOS tube, and the first temperature detection value is the same as the external environment temperature when the device is started, so that the device can be identified to be in low-temperature operation. Furthermore, the temperature information is acquired by using the original temperature detection module on the equipment, and the cost can be reduced under the condition of ensuring the functions without additionally installing the temperature detection module.
The invention provides a control method for starting equipment, which comprises the following steps: a detection step: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value; a judging step: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein in the low-speed stable operation stage, the temperature detection module, the processor and the like are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the computer is started, the service life is prolonged, and the accuracy of detected information is ensured.
Example two
The invention also provides a control device, which is used for starting the control device, is used for executing the method described in the first embodiment and can realize the effect achieved by the method; the control apparatus includes:
a detection module: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value;
a judgment module: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage.
In the prior art, as the internal mechanical structure of a part of electric tools such as an electric hammer is complex, the problem that the machine can not be started due to overlarge starting current in a low-temperature environment, so that the machine generates overcurrent or short-circuit faults can occur; in view of the above problems, the present invention provides a new control method, which enables a low-temperature start strategy when the temperature is too low, and the low-temperature start strategy comprises at least one low-speed stable operation stage and at least one variable-speed operation stage. Wherein, in the low-speed stable operation stage, the motor operates at a fixed speed; during the variable speed operating phase, the speed of the motor continues to increase in fixed increments.
In a preferred embodiment, in a low-speed stable operation stage, the temperature detection module, the processor and the like are in a standby state, and real-time information detection and processing are not performed, so that the pressure of the temperature detection module and the processor during startup can be effectively reduced, the temperature detection module and the processor are prevented from entering a high-load state immediately after startup, the temperature detection and judgment step is restarted after the first low-speed stable operation stage is finished, and then whether a low-temperature startup strategy is continuously executed or normal startup is determined according to the judgment result.
When the first stage is a low-speed stable operation stage, the motor is controlled to operate at a smaller initial speed, the initial speed is a fixed value, the time of the first low-speed stable operation stage is also a fixed value, the two fixed values can be set by an operator, and the fixed values can be stored in a related storage module as fixed information before the equipment leaves a factory, so that the equipment can be called and operated directly.
In a preferred embodiment, the cold start strategy further comprises detecting a speed control value, the control device switching from the low speed stable operation phase to the variable speed operation phase when the speed control value meets a speed control threshold. Preferably, the speed control value includes a current sum, or a second temperature detection value. When the current is taken as a control value, exemplarily, the next low-speed stage is entered when the current is reduced to 2 times 'no-load current', wherein the change of the current is shown in fig. 2; wherein, the second low rotation speed stage can be a low speed stable operation stage or a variable speed operation stage. In the field, the no-load current is a fixed value under the general condition, and the setting is completed when the equipment is out of the field and is stored in a storage module of the equipment; when the temperature is used as the control value, when the new temperature detection value is increased by a fixed value compared with the external ambient temperature, for example, by 20 degrees centigrade, the control device enters the next operation stage.
In a preferred embodiment, the cold start strategy further comprises: after the first low-speed stable operation stage is finished, the temperature detection and judgment steps are started again, and when the temperature T is still smaller than the preset temperature threshold value T max And when the temperature is greater than the second temperature threshold, entering a second low-speed stable operation stage, as shown in fig. 3, where the second temperature threshold may be set by the human-computer interaction module and may be set by the human-computer interaction moduleOne or more of them are set according to actual requirements, for example, set to 0.3T max 、0.5T max 、0.8T max And the like.
The speed of the motor in the second low-speed stable operation stage is higher than that of the motor in the first low-speed stable operation stage; the speeds of different low-speed stable operation stages are different, and the speed variation can be manually set through a human-computer interaction module or calculated according to the actual environment, such as the temperature variation; when the speed V is obtained from the change in temperature, the following formula may be used for calculation:
wherein, T max The temperature is a preset temperature threshold value, namely a temperature value allowing the motor to work normally; t is 0 The temperature value is measured for the first time after starting up, namely a first temperature detection value; t is the current temperature value, i.e. the second temperature value measured at the end of the current operating phase, generally speaking, T>T 0 ；V nax And the idling rotation speed is the speed of the motor in the idling state.
Preferably, the time of each low-speed stable operation stage can be manually set through the human-computer interaction module, and can also be set according to environmental information, such as temperature, and when the operation time t is set according to the temperature, the following formula can be adopted for calculation:
wherein, t 0 The time value is a preset time value, which can be set by a user of the equipment through a man-machine interaction module, and a default value can also be directly called from a storage module of the equipment.
According to the invention, a plurality of stages are set in the low-temperature starting strategy, and each stage operates according to the calculated time, so that the detection and judgment frequency of the temperature detection module and the processor is effectively reduced, the data transmission is reduced, the load capacity of the processor is reduced, and the service life is prolonged.
In a preferred embodiment, the low-temperature start strategy further comprises a step of detecting and judging the temperature again after the previous low-speed stable operation stage is finished, and when the temperature is still smaller than a preset temperature threshold and larger than a second temperature threshold, a variable-speed operation stage is started; the second temperature threshold may be set by a human-computer interaction module, and may be set to one or more according to actual requirements, for example, to 0.3T max 、0.5T max 、0.8T max And the like.
Preferably, the time of the low-speed stable operation stage may be manually set by a human-computer interaction module, or may be set according to environmental information, such as temperature, and when the operation time t is set according to the temperature, the following formula may be used for calculation:
wherein, t 0 The time value is a preset time value, which can be set by a user of the device through a human-computer interaction module, or a default value can be directly called from a storage module of the device.
Preferably, during said variable speed operating phase, the speed of the motor is continuously increased in fixed increments; the increment refers to the motor speed variation in unit time, can be set by a user of the equipment through a human-computer interaction module, and can also be directly called a default value from a storage module of the equipment; and may also be set based on environmental information, such as current or temperature changes.
When the determination is performed according to the temperature, the temperature change amount | Δ T | and/or the current change amount | Δ I | of the low-speed stable operation stage are obtained, and the increment Δ V is determined according to the temperature change amount | Δ T | and/or the current change amount | Δ I |, and in a preferred embodiment, the increment Δ V is calculated in the following manner:
ΔV＝a*|ΔT|+b*|ΔI|
wherein a and b are numbers greater than or equal to 0, and a + b >0; the specific value is set when the equipment is out of the field, and can be directly called from a storage module of the equipment when in use.
Preferably, the time of the variable-speed operation stage can be manually set through a human-computer interaction module, and can also be determined according to equipment information, environmental information and the like, such as the rotating speed, the temperature and the like of the motor; preferably, it can be calculated by the following formula:
wherein, V 0 The starting speed of the variable speed operation stage is generally the same as the speed at the end of the other previous stage; c is a constant coefficient which can be set by a machine operator or can directly call a default value from a storage module of the equipment; the determination can also be carried out according to temperature information; when the temperature information is used for determination, the following formula can be used for calculation:
in a preferred embodiment, as shown in fig. 4, the low-temperature start strategy includes two consecutive variable-speed operating phases, and when the variable-speed operating phase has no low-speed stable operating phase and is the first operating phase, in the variable-speed operating phase, the speed increment of the motor can be set by a user of the device through the human-computer interaction module, or a default value can be directly called from a storage module of the device.
When the first phase is a variable-speed operation phase, the motor is controlled to operate at a smaller initial speed, the initial speed is a fixed value, the time of the first variable-speed stable operation phase is also a fixed value, the speed increment of the first variable-speed stable operation phase is also a fixed value, the three fixed values can be set by an operator, and the fixed values can also be stored in a related storage module as fixed information before equipment leaves a factory so as to be convenient for directly calling and operating.
When the low-speed stable operation stage does not exist before the variable-speed operation stage and is not the first operation stage, the speed increment of the motor can be set by a user of the equipment through a man-machine interaction module, or a default value is directly called from a storage module of the equipment, and the speed increment can be determined according to the change of current; the method specifically comprises the following steps: obtaining the temperature change | Δ T | and/or the current change | Δ I | of the previous variable speed operation stage, and determining the increment Δ V according to the temperature change | Δ T | and/or the current change | Δ I |, where in a preferred embodiment, the increment Δ V is calculated as follows:
ΔV＝a*|ΔT|+b*|ΔI|
wherein a and b are numbers greater than or equal to 0, and a + b >0; the specific value is set when the equipment is out of the field, and can be directly called from a storage module of the equipment when in use.
The determination mode of the time of the variable speed operation stage is the same as that of the scheme described in the scheme, namely manual setting can be carried out through a human-computer interaction module, and the time can also be determined according to equipment information, environmental information and the like, such as the rotating speed, the temperature and the like of a motor; preferably, it can be calculated by the following formula:
wherein, V 0 The starting speed of the variable speed operation stage is generally the same as the speed at the end of the other previous stage; c is a constant coefficient which can be set by a machine operator or a default value can be directly called from a storage module of the equipment; the determination can also be carried out according to temperature information; when the temperature information is used for determination, the following formula can be used for calculation:
wherein the maximum value of the speed in the variable speed operation stage is V max Once the speed reaches V max Even if the speed change operation stage is still performed according to the determined time, the speed of the motor is not changed any more.
In the scheme provided by the invention, the low-temperature starting strategy can consist of at least one low-speed stable operation stage and at least one variable-speed operation stage, and also can only comprise the operation speeds of a plurality of variable-speed operation stages or a plurality of variable-speed operation stages; when two different phases are included simultaneously, the low-speed steady operation phase precedes the variable-speed operation phase; and the running speed of the low-speed stable running stage is lower than that of the variable-speed running stage.
The invention provides an operation stage switching strategy using a speed control value and time, preferably, an equipment user can select operation stage switching by himself to switch according to the time t or according to the speed control value; meanwhile, two kinds of switching strategies may also be used simultaneously, that is, switching is performed when at least one of the time switching condition and the speed control value switching condition is satisfied.
According to the invention, a plurality of stages are set in the low-temperature starting strategy, and each stage operates according to the calculated time, so that the detection and judgment frequency of the temperature detection module and the processor is effectively reduced, the data transmission is reduced, the load capacity of the processor is reduced, and the service life is prolonged.
In a preferred embodiment, the apparatus includes a heat generating element, and the first temperature detection value is a temperature of the heat generating element. Preferably, the heating element may be an MOS transistor, and the temperature detection module is configured to detect a temperature at the MOS transistor. Generally speaking, in order to ensure the normal operation of the equipment, temperature detection modules are installed at the MOS transistors to determine the states of the MOS transistors; in the invention, the acquired temperature detection value is the temperature of heating elements such as an MOS tube and the like, and when the device is started, the first temperature detection value is the same as the external environment temperature, so that the device can be identified to be in low-temperature operation. Furthermore, the temperature information is acquired by using the original temperature detection module on the equipment, and the cost can be reduced under the condition of ensuring the functions without additionally installing the temperature detection module.
The invention provides a control device which is started by using a low-temperature starting strategy according to an acquired first temperature detection value when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein in the low-speed stable operation stage, the temperature detection module, the processor and the like are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the computer is started, the service life is prolonged, and the accuracy of detected information is ensured.
EXAMPLE III
The invention also provides a control device, which is used for starting the control device, is used for executing the method described in the first embodiment and can realize the effect achieved by the method; as shown in fig. 5: the control apparatus includes: temperature detection module, treater, drive division, motor portion. The temperature detection module is connected with the processor and used for detecting temperature information and sending the temperature information to the processor; the processor is connected with the driving part, and the driving part is connected with the motor part. The temperature detection module can be an NTC temperature sensor, an infrared sensor and the like and is used for realizing temperature detection. The processor can be an MCU or other components with processing functions; the driving part is used for receiving a processing command from the processor, converting the processing command into a control command which can be identified by the motor part and sending the control command to the motor part; the motor part executes corresponding operation according to the control instruction; the driving part is provided with a heating element, preferably, the heating element can be an MOS tube, and the temperature detection module is used for detecting the temperature at the MOS tube. Generally speaking, in order to ensure the normal operation of the equipment, temperature detection modules are installed at the MOS transistors to determine the states of the MOS transistors; in the invention, the acquired temperature detection value is the temperature of heating elements such as an MOS tube and the like, and when the device is started, the first temperature detection value is the same as the external environment temperature, so that the device can be identified to be in low-temperature operation. Furthermore, the temperature information is acquired by using the original temperature detection module on the equipment, and the cost can be reduced under the condition of ensuring the functions without additionally installing the temperature detection module.
Preferably, the temperature detection module, such as an NTC temperature sensor, is configured to detect a temperature and obtain a first temperature detection value;
the processor, such as an MCU and the like, is used for starting by using a low-temperature starting strategy when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The processor issues instructions of different stages of the low-temperature starting strategy to the driving part, and the control of the motor part is realized through the driving part. The low-temperature start strategy is the same as the schemes described in the first and second embodiments, and is not described herein again.
In the scheme provided by the invention, the MCU measures the ambient temperature through the NTC at the beginning, judges whether the machine can be directly and normally started or not according to the temperature, if the temperature is too low, the tool is enabled to run at a low speed, and switches to the normal starting state after a period of time or judgment conditions are allowed, and if the judgment conditions are not appropriate, the machine continues to run at a low speed.
The invention provides a control device, which is started by using a low-temperature starting strategy according to an acquired first temperature detection value when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein in the low-speed stable operation stage, the temperature detection module, the processor and the like are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the computer is started, the service life is prolonged, and the accuracy of detected information is ensured.
The invention also provides a control device, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the computer program to realize the method.
The invention also provides a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a control method, control equipment and a computer readable medium for equipment startup, wherein the control method comprises the following steps: a detection step: the temperature detection device is used for detecting temperature and acquiring a first temperature detection value; a judging step: the low-temperature starting strategy is used for starting when the first temperature detection value is smaller than a preset temperature threshold value; wherein the low-temperature starting strategy at least comprises a low-speed stable operation stage and/or a variable-speed operation stage. The temperature detection module at the heating element is used for detecting the temperature, and a new temperature detection module is not required to be added, so that the cost of the tool is reduced; meanwhile, the low-temperature starting strategy comprises a low-speed stable operation stage and/or a variable-speed operation stage, wherein the temperature detection module, the processor and the like in the low-speed stable operation stage are in a standby state and do not carry out real-time information detection and processing, so that the pressure of the detection module and the processor is reduced when the machine is started, the service life is prolonged, and the accuracy of detected information is ensured.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
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