CN109236623B - Compressor starting drive circuit, drive method, device and computer storage medium - Google Patents

Abstract

The invention discloses a compressor startup driving circuit, a driving method, a device and a computer-readable storage medium, and belongs to the technical field of compressors. The compressor start-up drive circuit includes: a thyristor connected in parallel with both ends of an operating capacitor connected in series with the auxiliary winding of the current compressor; a temperature detection device for detecting the current temperature value in the area where the current compressor is located; The digital pulse control circuit of the trigger signal of silicon; obtain the attribute information of the current compressor, and obtain the current temperature value through the temperature detection device, and determine the second trigger matching the current temperature value and the attribute information signal strategy, and according to the second trigger signal strategy, a second current trigger signal is generated, so that the current compressor is started. In this way, the compressor is started by the digital control circuit, which improves the driving accuracy of the compressor, and has the function of temperature self-detection, which can adjust the trigger signal of the thyristor by itself according to the temperature change.

Description

Compressor starting drive circuit, drive method, device and computer storage medium

technical field

The present invention relates to the technical field of compressors, and in particular, to a compressor startup driving circuit, a driving method, a device and a computer-readable storage medium.

Background technique

Many smart home appliances include an important device, a compressor, such as refrigerators, air conditioners, etc. Fixed-frequency compressors still maintain a high proportion due to their large price advantage, such as household refrigerators, freezers, etc. Due to the low power, the energy-saving effect of frequency conversion is not obvious, and products including fixed-frequency compressors occupy a significant proportion. Market Advantage.

At present, the startup of low-power compressors is controlled by thyristor, and the trigger signal of thyristor is generally generated by an analog drive circuit, that is, the drive of the compressor can include: using discrete components to build The analog circuit of the thyristor controls the on-time of the thyristor by designing the charging and discharging time of the capacitor, and then starts the compressor. Then start the compressor. However, the devices in this analog driving circuit generally have deviations themselves, and are easily affected by the external environment, and cannot be precisely controlled.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a compressor startup driving circuit, a driving method, a device, and a computer storage medium. In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor is it intended to identify key/critical elements or delineate the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the detailed description that follows.

According to a first aspect of the embodiments of the present invention, there is provided a compressor startup drive circuit, comprising:

A thyristor connected in parallel with both ends of the running capacitor in series with the auxiliary winding of the current compressor;

A temperature detection device for detecting the current temperature value of the area where the current compressor is located;

a digital pulse control circuit for generating the trigger signal of the thyristor;

Wherein, the digital pulse control circuit has one end connected to the auxiliary winding and one end connected to the AC input power supply, and is used to obtain the attribute information of the current compressor, and obtain the current temperature value through the temperature detection device, A second trigger signal strategy matching the current temperature value and the attribute information is determined, and according to the second trigger signal strategy, a second current trigger signal is generated, so that the current compressor is started.

In an embodiment of the present invention, the digital pulse control circuit includes: a comparison circuit, when the relative difference between the reference voltage of the comparison circuit and the zero voltage is less than a set value, and the AC input voltage is greater than zero, the digital pulse The control circuit generates a high-level trigger signal.

In an embodiment of the present invention, the data pulse control circuit is specifically configured to determine the trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; The pulse width value of the second trigger signal matching the current temperature value and the attribute information of the current compressor; and/or, determining the second trigger matching the current temperature value and the attribute information of the current compressor The trigger action time length of the signal.

According to a second aspect of the embodiments of the present invention, a method for starting and driving a compressor is provided, which is applied to the above-mentioned compressor starting and driving circuit, and the method includes:

Obtain the attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through the temperature detection device;

Determine a second trigger signal strategy that matches the current temperature value and the attribute information of the current compressor, and generate a second current trigger signal of the thyristor according to the second trigger signal strategy, so that the current compressor machine starts.

In an embodiment of the present invention, it also includes:

The reference voltage of the comparison circuit in the digital pulse control circuit is configured as the first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, wherein the first reference voltage and The relative difference between zero voltages is less than the set value.

In an embodiment of the present invention, the determining a second trigger signal strategy that matches the current temperature value and the attribute information of the current compressor includes:

determining the trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or,

determining a pulse width value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or,

The trigger action time length of the second trigger signal matching the current temperature value and the current compressor attribute information is determined.

According to a third aspect of the embodiments of the present invention, a device for starting and driving a compressor is provided, which is applied to the above-mentioned compressor starting and driving circuit, and the device includes:

a second obtaining unit, configured to obtain attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through a temperature detection device;

a second control unit, configured to determine a second trigger signal strategy matching the current temperature value and the attribute information of the current compressor, and generate a second current trigger of the thyristor according to the second trigger signal strategy signal, causing the current compressor to start.

In an embodiment of the present invention, the device further includes:

a configuration unit configured to configure the reference voltage of the comparison circuit in the digital pulse control circuit as a first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, wherein the The relative difference between the first reference voltage and the zero voltage is less than the set value.

In an embodiment of the present invention, the second control unit is specifically configured to determine the trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or, determines The pulse width value of the second trigger signal matching the current temperature value and the attribute information of the current compressor; and/or, determining the second trigger matching the current temperature value and the attribute information of the current compressor The trigger action time length of the signal.

According to a fourth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium storing computer instructions thereon, and when the instructions are executed by a processor, the steps of the above method are implemented.

The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

In the embodiment of the present invention, the digital pulse control circuit is a digital circuit, which can determine a trigger signal strategy that matches the attribute information of the compressor and the temperature value of the area where the compressor is located, and then, according to the trigger signal strategy, controls the trigger to generate the thyristor signal, and then start the compressor. In this way, the digital control circuit is used to start the compressor, and the trigger current, pulse width, time and other parameters of the thyristor can be flexibly configured, so that the trigger phase of the compressor coil can be accurately controlled and the compression Machine-driven accuracy. In addition, it has the function of temperature self-detection, which can adjust the trigger signal of the thyristor according to the temperature change. In addition, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a structural diagram of a compressor startup driving circuit according to an exemplary embodiment;

2 is a circuit architecture diagram of a digital pulse control circuit according to an exemplary embodiment;

Fig. 3 is a flow chart showing a method for starting and driving a compressor according to an exemplary embodiment;

FIG. 4 is a structural diagram of a compressor startup driving circuit according to an exemplary embodiment;

Fig. 5 is a flow chart showing a method for starting and driving a compressor according to an exemplary embodiment;

FIG. 6 is a block diagram of a compressor startup driving device according to an exemplary embodiment;

Fig. 7 is a block diagram of a compressor startup driving device according to an exemplary embodiment.

Detailed ways

The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples are only representative of possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the invention includes the full scope of the claims, along with all available equivalents of the claims. Various embodiments may be referred to herein by the term "invention," individually or collectively, for convenience only, and are not intended to automatically limit the scope of this application to any if more than one invention is in fact disclosed. A single invention or inventive concept. Herein, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation and do not require or imply any actual relationship between these entities or operations or order. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method or apparatus comprising a list of elements includes not only those elements, but also others not expressly listed elements. The various embodiments herein are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and it is sufficient to refer to each other for the same and similar parts between the various embodiments. As for the structures, products, etc. disclosed in the embodiments, since they correspond to the parts disclosed in the embodiments, the descriptions are relatively simple, and the related parts can be referred to the descriptions of the methods.

The traditional compressor drive circuit is generally an analog drive circuit, and the accuracy and reliability are not high. In the embodiment of the present invention, the digital pulse control circuit is a digital circuit, which can determine a trigger signal strategy matching the attribute information of the compressor, and then, according to the trigger signal strategy, control to generate a trigger signal of the thyristor, and then start the compressor, so that , Start the compressor through the digital control circuit, and can flexibly configure parameters such as the trigger current, pulse width and time of the thyristor, so that the trigger phase of the compressor coil can be precisely controlled, and the accuracy of the compressor drive can be improved. Moreover, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

FIG. 1 is a structural diagram of a compressor startup driving circuit according to an exemplary embodiment. As shown in FIG. 1 , the compressor startup driving circuit includes: a thyristor 100 and a digital pulse control circuit 200 .

The thyristor 100 is connected in parallel with both ends of the operating capacitor connected in series with the auxiliary winding of the compressor, that is, the drive circuit includes the thyristor 100 connected in parallel with both ends of the operating capacitor connected in series with the auxiliary winding of the compressor.

In this embodiment, the digital pulse control circuit 200 is a digital circuit, and the digital pulse control circuit 200 can generate a trigger signal of the thyristor 100 .

As shown in FIG. 1 , one end of the digital pulse control circuit 200 can be connected to the auxiliary winding, and the other end can be connected to the AC input power supply. In this way, the digital pulse control circuit 200 can be used to determine whether it matches the attribute information of the current compressor. According to the first trigger signal strategy, and according to the first trigger signal strategy, the first current trigger signal is generated, so that the current compressor is started.

It can be seen that the compressor startup drive circuit may include: a thyristor 100 connected in parallel with both ends of the running capacitor connected in series with the auxiliary winding of the current compressor, and a digital pulse control circuit 200 for generating a trigger signal of the thyristor.

In this embodiment, the digital pulse control circuit 200 may be an integrated circuit chip, which may include: a digital pulse generating circuit and a main control circuit according to functions. The digital pulse generation circuit can be used to generate a trigger signal, and the main control circuit can determine a first trigger signal strategy that matches the attribute information of the current compressor, and control the digital pulse generation circuit to generate the first current trigger signal according to the first trigger signal strategy , so that the current compressor starts. At present, some existing digital pulse generation chips can be applied to this embodiment, such as: 555 chip, 8253 chip, etc., and the main control circuit can also use existing digital control chips, such as existing industrial control chips, etc. , or, the digital pulse control circuit 200 is an industrial control chip capable of generating digital pulses. Not listed specifically.

Different models of compressors have different trigger phases of the corresponding coils. Therefore, in the drive circuit, the trigger current, pulse width and time length of the trigger signal of the thyristor are not necessarily the same. The first correspondence between the attribute information of the compressor and the trigger signal strategy can be pre-configured, wherein the trigger signal strategy includes: one, two or two of the trigger current strategy, the pulse width strategy, and the trigger action time strategy. variety. In this way, after acquiring the attribute information of the current compressor, the data pulse control circuit can determine the first triggering signal strategy matching the acquired attribute information according to the first correspondence, that is, determining the triggering of the first triggering signal matching the attribute information The current value determines one or more of the pulse width value of the first trigger signal matching the attribute information, and the trigger action time length of the first trigger signal matching the attribute information. That is, the digital pulse control circuit can specifically be used to determine the trigger current value of the first trigger signal that matches the attribute information of the current compressor; and/or, to determine the pulse width value of the first trigger signal that matches the attribute information of the current compressor. and/or, determining the trigger action time length of the first trigger signal matching the attribute information of the current compressor. Then, according to the determined first trigger signal strategy, the first current trigger signal of the thyristor is generated, so that the current compressor is started.

Among them, to determine the first trigger signal strategy that matches the attribute information, the digital pulse control circuit can determine it locally, or it can send the attribute information of the compressor to the background server, and the server can send it to the digital pulse control circuit after it is determined. A first trigger signal policy that matches the attribute information is determined.

Since the first trigger signal strategy is determined according to the attribute information of the compressor, the parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor, so that the compression can be precisely controlled. The trigger phase of the motor coil improves the accuracy of the compressor drive. Moreover, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

Fig. 2 is a circuit structure diagram of a digital pulse control circuit according to an exemplary embodiment. As shown in FIG. 2 , the digital pulse control circuit may include: a comparison circuit 210 , a counter 220 and a pulse generator 230 . The reference voltage of the comparison circuit 210 is N, the reference voltage N of the comparison circuit in the digital pulse control circuit can be configured as the first reference voltage, and the relative difference between the first reference voltage and the zero voltage can be smaller than the set value. Preferably, the first reference voltage can be very close to zero, that is, the set value can be very small, such as 0.5, 0.3, or even 0.1, so that when the AC input voltage is just greater than zero, the digital pulse control circuit can generate a high voltage. level trigger signal. Therefore, the conduction of the thyristor can be triggered near the zero-crossing point of the AC input voltage.

In the above compressor startup drive circuit, the digital pulse control circuit can flexibly configure parameters such as trigger current, pulse width and time of the trigger signal of the thyristor according to the properties of the compressor, thereby starting the compressor.

Fig. 3 is a flow chart showing a method for starting and driving a compressor according to an exemplary embodiment. Of course, the compressor startup driving method is applied to the compressor startup driving circuit described above. As shown in FIG. 3 , the compressor startup driving process includes:

Step 301: Acquire attribute information of the current compressor.

The performance of each compressor is different, and the corresponding attribute information is also different, which may include information such as power, load and so on. The attribute information of the current compressor can be obtained through communication with the compressor, or the identification information of the current compressor can be read, and then the attribute information corresponding to the identification information can be obtained from the back-end server. Of course, the present invention is not limited to Therefore, other acquisition methods may also be applied in this embodiment.

Step 302: Determine a first trigger signal strategy that matches the attribute information, and generate a first current trigger signal of the thyristor according to the first trigger signal strategy, so as to start the current compressor.

The first correspondence between the attribute information of the compressor and the trigger signal strategy can be pre-configured, wherein the trigger signal strategy includes: one, two or two of the trigger current strategy, the pulse width strategy, and the trigger action time strategy. variety. In this way, after acquiring the attribute information of the current compressor, the first trigger signal strategy that matches the acquired attribute information can be determined according to the first corresponding relationship saved locally or the first corresponding relationship saved by the background server, that is, to determine the first trigger signal strategy matching the acquired attribute information, that is, to determine the first trigger signal strategy matching the current compressor. The trigger current value of the first trigger signal that matches the attribute information of the compressor; and/or, determine the pulse width value of the first trigger signal that matches the attribute information of the current compressor; and/or, determine that it matches the attribute information of the current compressor. The trigger action time length of the first trigger signal.

Since the digital pulse control circuit can generate the trigger signal of the thyristor, the trigger signal is a pulse signal, thus, according to the determined first trigger signal strategy, the first current trigger signal of the thyristor is generated. The thyristor can start the current compressor according to receiving the first trigger signal.

It can be seen that in this embodiment, parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor, so that the trigger phase of the compressor coil can be precisely controlled, and the compressor can be improved. Accuracy of the drive. Moreover, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

Of course, in another embodiment of the present invention, the reference voltage of the comparison circuit in the digital pulse control circuit can also be configured as the first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, Wherein, the relative difference between the first reference voltage and the zero voltage is smaller than the set value, so that the thyristor can be triggered to be turned on near the zero-crossing point of the AC input voltage.

Moreover, in the embodiment of the present invention, not only can the parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor be flexibly configured according to the attribute information of the compressor, but also can be set according to the temperature information of the area where the compressor is located. Parameters such as the trigger current, pulse width, and time of the trigger signal of the thyristor, that is, in an embodiment of the present invention, may also include: obtaining the current temperature value of the area where the current compressor is located through a temperature detection device; The attribute information of the compressor matches the second trigger signal strategy, and according to the second trigger signal strategy, a second current trigger signal is generated, so that the current compressor is started.

Fig. 4 is a structural diagram of a compressor startup driving circuit according to an exemplary embodiment. As shown in FIG. 4 , the compressor start-up drive circuit includes: a thyristor 100 , a digital pulse control circuit 200 , and a temperature detection device 300 .

Of course, the connection between the thyristor 100 and the digital pulse control circuit 200 and the connection with the coil of the compressor can be as described above. Here, the temperature detection device 300 can be installed in the area where the compressor is located, so that the temperature value of the area where the compressor is located can be detected, and the digital pulse control circuit 200 needs to obtain the temperature value detected by the temperature detection device 300. Therefore, the digital pulse control circuit One pin of 200 can be connected to the temperature detection device 300 .

Therefore, the compressor startup drive circuit shown in FIG. 4 may include: a thyristor 100 connected in parallel with both ends of the running capacitor connected in series with the auxiliary winding of the current compressor; a temperature detection device 300 for detecting the current temperature value of the area where the current compressor is located , and a digital pulse control circuit 200 that generates a trigger signal of the thyristor.

The digital pulse control circuit 200, one end is connected to the auxiliary winding, and the other end is connected to the AC input power supply, is used to obtain the attribute information of the current compressor, obtain the current temperature value through the temperature detection device, and determine the first temperature value matching the attribute information. Second trigger signal strategy, and according to the second trigger signal strategy, a second current trigger signal is generated, so that the current compressor is started.

It can be seen that different models of compressors have different trigger phases of the corresponding coils, and different compressor temperatures have different trigger phases of the corresponding coils. Therefore, the attribute information of the compressor and the temperature value of the compressor and the trigger phase can be pre-configured. The second correspondence between signal strategies, wherein the trigger signal strategy includes one, two or more of: trigger current strategy, pulse width strategy, and trigger action time strategy. In this way, after acquiring the current temperature value and the attribute information of the current compressor, the data pulse control circuit can determine the corresponding second trigger signal strategy according to the second correspondence stored locally or stored in the background server, which may specifically include: The trigger current value of the second trigger signal whose temperature value matches the attribute information of the current compressor; and/or, determine the pulse width value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or , and determine the trigger action time length of the second trigger signal that matches the current temperature value and the attribute information of the current compressor. Then, according to the determined second trigger signal strategy, a second current trigger signal of the thyristor is generated, so that the current compressor is started.

Since the second trigger signal strategy is determined according to the attribute information of the compressor and the temperature value of the area where the compressor is located, the trigger current of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor and the temperature information of the area where the compressor is located , pulse width, time and other parameters, thus, the trigger phase of the compressor coil can be precisely controlled, and the accuracy of the compressor drive is improved. In addition, it has the function of temperature self-detection, which can adjust the trigger signal of the thyristor according to the temperature change. In addition, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

Similarly, the digital pulse control circuit includes a comparison circuit, wherein the reference voltage of the comparison circuit is N, the reference voltage N of the comparison circuit in the digital pulse control circuit can be configured as a first reference voltage, and the first reference voltage can be equal to zero The relative difference between the voltages is less than the set value. Preferably, the first reference voltage can be very close to zero, that is, the set value can be very small, such as 0.5, 0.3, or even 0.1, so that when the AC input voltage is just greater than zero, the digital pulse control circuit can generate a high voltage. level trigger signal. Therefore, the conduction of the thyristor can be triggered near the zero-crossing point of the AC input voltage.

The compressor start-up drive circuit has the function of temperature self-detection, and can adjust the trigger signal of the thyristor according to the temperature change, so as to start the corresponding compressor.

Fig. 5 is a flowchart showing a method for starting and driving a compressor according to an exemplary embodiment. Of course, the compressor startup driving method is applied to the compressor startup driving circuit shown in FIG. 4 . As shown in FIG. 5 , the compressor startup driving process includes:

Step 501: Obtain attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through the temperature detection device.

The digital pulse control circuit has a pin connected to the temperature detection device, such as a temperature sensor, so that the current temperature value of the area where the current compressor is located can be obtained. Obtaining the attribute information of the current compressor may be the same as step 301 .

Step 502 : Determine a second trigger signal strategy that matches the current temperature value and the attribute information of the current compressor, and generate a second current trigger signal of the thyristor according to the second trigger signal strategy to start the current compressor.

The second correspondence between the attribute information of the compressor and the temperature value of the compressor and the trigger signal strategy can be pre-configured, wherein the trigger signal strategy includes: trigger current strategy, pulse width strategy, and trigger action time strategy, etc. one, two or more. In this way, after acquiring the current temperature value and the attribute information of the current compressor, the data pulse control circuit can determine the corresponding second trigger signal strategy according to the second correspondence stored locally or stored in the background server, which may specifically include: The trigger current value of the second trigger signal whose temperature value matches the attribute information of the current compressor; and/or, determine the pulse width value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or , and determine the trigger action time length of the second trigger signal that matches the current temperature value and the attribute information of the current compressor.

Since the digital pulse control circuit can generate the trigger signal of the thyristor, the trigger signal is a pulse signal, thus, according to the determined second trigger signal strategy, the second current trigger signal of the thyristor is generated. The thyristor can start the current compressor according to receiving the second trigger signal.

It can be seen that in this embodiment, parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor and the temperature information of the area where it is located, so that the trigger of the compressor coil can be precisely controlled phase, which improves the accuracy of the compressor drive. In addition, it has the function of temperature self-detection, which can adjust the trigger signal of the thyristor according to the temperature change. In addition, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

The following are the apparatus embodiments of the present disclosure, which can be used to execute the method embodiments of the present disclosure.

According to the above process of starting and driving the compressor, a device for starting and driving the compressor can be constructed.

Fig. 6 is a block diagram of a compressor startup driving device according to an exemplary embodiment. Applied to the compressor startup drive circuit shown in FIG. 1, as shown in FIG. 6, the device includes: a first acquisition unit 610 and a first control unit 620, wherein,

The first obtaining unit 610 is configured to obtain attribute information of the current compressor.

The first control unit 620 is configured to determine a first trigger signal strategy matching the attribute information, and generate a first current trigger signal of the thyristor according to the first trigger signal strategy, so that the current compressor is started.

In an embodiment of the present invention, the first control unit 620 is specifically configured to determine the trigger current value of the first trigger signal matching the attribute information of the current compressor; and/or, to determine the first trigger current value matching the attribute information of the current compressor. A pulse width value of the trigger signal; and/or, determining the trigger action time length of the first trigger signal matching the attribute information of the current compressor.

It can be seen that in this embodiment, parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor, so that the trigger phase of the compressor coil can be precisely controlled, and the compressor can be improved. Accuracy of the drive. Moreover, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

Fig. 7 is a block diagram of a compressor startup driving device according to an exemplary embodiment. Applied to the compressor startup drive circuit shown in FIG. 4, as shown in FIG. 7, the device includes: a second acquisition unit 710 and a second control unit 720, wherein the device includes:

The second obtaining unit 710 is configured to obtain the attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through the temperature detection device.

The second control unit 720 is configured to determine a second trigger signal strategy matching the current temperature value and the attribute information of the current compressor, and generate a second current trigger signal of the thyristor according to the second trigger signal strategy, so that the current compressor machine starts.

In an embodiment of the present invention, the device further includes:

The configuration unit is used to configure the reference voltage of the comparison circuit in the digital pulse control circuit as the first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, wherein the first reference voltage and zero The relative difference between the voltages is less than the set value.

In an embodiment of the present invention, the second control unit 720 is specifically configured to determine the trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; The pulse width value of the second trigger signal matching the attribute information of the compressor; and/or, determining the trigger action time length of the second trigger signal matching the current temperature value and the attribute information of the current compressor.

It can be seen that in this embodiment, parameters such as the trigger current, pulse width and time of the trigger signal of the thyristor can be flexibly configured according to the attribute information of the compressor and the temperature information of the area where it is located, so that the trigger of the compressor coil can be precisely controlled phase, which improves the accuracy of the compressor drive. In addition, it has the function of temperature self-detection, which can adjust the trigger signal of the thyristor according to the temperature change. In addition, the digital control circuit is less affected by the device and the external environment, which further mentions the reliability of the compressor drive.

In an embodiment of the present invention, a digital pulse control circuit is provided, which is applied to the compressor start-up drive circuit shown in FIG. 1 , and may include:

processor;

memory for storing processor-executable instructions;

wherein the processor is configured to:

Get the attribute information of the current compressor;

A first trigger signal strategy matching the attribute information is determined, and according to the first trigger signal strategy, a first current trigger signal of the thyristor is generated, so as to start the current compressor.

In an embodiment of the present invention, a computer-readable storage medium is provided, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the above method are implemented.

In an embodiment of the present invention, a digital pulse control circuit is provided, which is applied to the compressor start-up drive circuit shown in FIG. 4 , and may include:

processor;

memory for storing processor-executable instructions;

wherein the processor is configured to:

Obtain the attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through the temperature detection device;

Determine a second trigger signal strategy that matches the current temperature value and the attribute information of the current compressor, and generate a second current trigger signal of the thyristor according to the second trigger signal strategy, so that the current compressor machine starts.

In an embodiment of the present invention, a computer-readable storage medium is provided, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the above method are implemented.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

It should be understood that the present invention is not limited to the processes and structures that have been described above and shown in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (10)

1. A compressor startup drive circuit, characterized in that, comprising: A thyristor connected in parallel with both ends of the running capacitor in series with the auxiliary winding of the current compressor; A temperature detection device for detecting the current temperature value of the area where the current compressor is located; a digital pulse control circuit for generating the trigger signal of the thyristor; Wherein, the digital pulse control circuit has one end connected to the auxiliary winding and one end connected to the AC input power supply, and is used to obtain the attribute information of the current compressor, and obtain the current temperature value through the temperature detection device, A second trigger signal strategy matching the current temperature value and the attribute information is determined, and according to the second trigger signal strategy, a second current trigger signal is generated, so that the current compressor is started. 2. The compressor startup drive circuit according to claim 1, wherein the digital pulse control circuit comprises: a comparison circuit, when the relative difference between the reference voltage of the comparison circuit and the zero voltage is less than a set value , when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal. 3. The compressor startup drive circuit according to claim 1, characterized in that: The digital pulse control circuit is specifically configured to determine a trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or, determines a trigger current value that matches the current temperature value and the current compressor. The pulse width value of the second trigger signal matching the attribute information of the current compressor; and/or, determining the trigger action time length of the second trigger signal matching the current temperature value and the attribute information of the current compressor. 4. A method for starting and driving a compressor, characterized in that it is applied to the compressor starting and driving circuit of claim 1, 2 or 3, the method comprising: Obtain the attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through the temperature detection device; Determine a second trigger signal strategy that matches the current temperature value and the attribute information of the current compressor, and generate a second current trigger signal of the thyristor according to the second trigger signal strategy, so that the current compressor machine starts. 5. The method of claim 4, further comprising: The reference voltage of the comparison circuit in the digital pulse control circuit is configured as the first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, wherein the first reference voltage and The relative difference between zero voltages is less than the set value. 6. The method according to claim 4 or 5, wherein the determining a second trigger signal strategy matching the current temperature value and the attribute information of the current compressor comprises: determining the trigger current value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or, determining a pulse width value of the second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or, The trigger action time length of the second trigger signal matching the current temperature value and the current compressor attribute information is determined. 7. A device for starting and driving a compressor, characterized in that, when applied to the compressor starting and driving circuit of claim 1, 2 or 3, the device comprises: a second obtaining unit, configured to obtain attribute information of the current compressor, and obtain the current temperature value of the area where the current compressor is located through a temperature detection device; a second control unit, configured to determine a second trigger signal strategy matching the current temperature value and the attribute information of the current compressor, and generate a second current trigger of the thyristor according to the second trigger signal strategy signal, causing the current compressor to start. 8. The apparatus of claim 7, wherein the apparatus further comprises: A configuration unit configured to configure the reference voltage of the comparison circuit in the digital pulse control circuit as a first reference voltage, so that when the AC input voltage is greater than zero, the digital pulse control circuit generates a high-level trigger signal, wherein the The relative difference between the first reference voltage and the zero voltage is smaller than the set value. 9. The device of claim 7 or 8, wherein The second control unit is specifically configured to determine a trigger current value of a second trigger signal that matches the current temperature value and the attribute information of the current compressor; and/or, determines a trigger current value that matches the current temperature value and the all determining the pulse width value of the second trigger signal matching the attribute information of the current compressor; and/or determining the trigger action time length of the second trigger signal matching the current temperature value and the attribute information of the current compressor. 10. A computer-readable storage medium on which computer instructions are stored, characterized in that, when the instructions are executed by a processor, the steps of the method according to any one of claims 4-6 are implemented.

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