CN111692697A - Air conditioner control device - Google Patents

Abstract

The invention provides an air conditioner control device. The air conditioner control device comprises a power supply, a compressor driver, a fan driver, a temperature sensor, a vibration sensor and an operation processing controller. The power supply has an input end for receiving an input power, and generates a first operation power and a second operation power according to the input power. The compressor driver operates according to the first operating power supply and generates a first driving signal to drive the compressor. The fan driver operates according to the first operating power supply and generates a second driving signal to drive the fan. The vibration sensor detects vibration information of the air conditioner control device. The operation processing controller operates according to the second operation power supply, controls the power supply according to the vibration information to determine whether to cut off the supply of the first operation power supply or not, and ensures that the air conditioner control device can work safely.

Description

Air conditioning control device

technical field

The invention relates to an air conditioning control device, in particular to a protection mechanism of the air conditioning control device.

Background technique

In today's society, air-conditioning control devices have become a common equipment. Air conditioning controls can be used to regulate the temperature, humidity and distribution of air flow. The air in the environment can be maintained in a comfortable state. Due to the characteristics of the air-conditioning control device that needs to work for a long time, the electrical and mechanical equipment of the air-conditioning control device may fail due to environmental factors and/or deterioration of components. Therefore, it is an important issue to perform real-time monitoring of the air-conditioning control device and maintain a certain degree of adequacy of the air-conditioning control device.

SUMMARY OF THE INVENTION

The present invention provides a variety of protection mechanisms with different reaction rates for an air-conditioning control device, so as to effectively maintain the proper rate of the air-conditioning control device.

According to an embodiment of the present invention, an air conditioner control device is used to control an air conditioner. The air-conditioning control device includes a power supply, a compressor driver, a fan driver, a vibration sensor, a temperature sensor, a current sensor, a voltage sensor, and an arithmetic processing controller. The power supply has an input terminal for receiving input power, and generates a first operating power and a second operating power according to the input power. The compressor driver operates according to the first operating power source, and generates a first driving signal to drive the compressor. The fan driver operates according to the first operating power source, and generates a second driving signal to drive the fan. The vibration sensor detects vibration information of the air conditioner. The temperature sensor detects a plurality of pieces of temperature information of the air conditioner. The current sensor detects the current information of the compressor and the fan. A voltage sensor detects voltage information in the air-conditioning control device. The arithmetic processing controller is coupled to the power supply, the compressor driver, the fan driver, the temperature sensor, the current sensor, the voltage sensor and the vibration sensor, and operates according to the second power supply to operate, according to the vibration information, the temperature information, the current information and the voltage information to control the power supply to decide whether to cut off the supply of the first operating power, or stop the compressor, The fan operates.

Description of drawings

The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of an air-conditioning control device according to an embodiment of the present invention;

2 is a schematic diagram of an air conditioning control device according to another embodiment of the present invention;

FIG. 3 is a start sequence diagram of multiple protection actions of the air-conditioning control device according to the embodiment of the present invention.

Explanation of reference numerals

100, 200: air conditioning control device;

110, 210: power supply;

120, 220: compressor driver;

130, 230: fan driver;

150, 250: shock sensor;

140, 240: operation processing controller;

170, 260: voltage sensor;

180: temperature sensor;

160: current sensor;

211: input terminal;

212: surge current protector;

213, 214: voltage converter;

SW1: switch;

215: start the inrush current protector;

216: power factor corrector;

F1, F2: fuse;

VIN: input power;

V1, V2: operating power supply;

DRV1, DRV2: drive signal;

IF: vibration information;

CMD: control command;

PC1, PC2: peak current protection signal;

ABI1, ABI2: abnormal information;

IF21: condenser temperature;

IF22: ambient temperature;

IF23: compressor input temperature;

IF24: compressor output temperature;

IFO: temperature information;

T1, T2, T3: time interval;

T11~T33: Time.

Detailed ways

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and description to refer to the same or like parts.

Please refer to FIG. 1 , which is a schematic diagram of an air conditioner control device according to an embodiment of the present invention. The air conditioner control device 100 includes a power supply 110 , a compressor driver 120 , a fan driver 130 , a vibration sensor 150 and an arithmetic processing controller 140 . The power supply 110 has an input terminal for receiving the input power VIN. The power supply 110 generates a first operating power V1 and a second operating power V2 according to the input power VIN. The compressor driver 120 and the fan driver 130 are coupled to the power supply 110, receive the first operating power V1, and operate according to the first operating power V1. Based on the first operating power source V1 , the compressor driver 120 is used to generate the driving signal DRV1 to drive the compressor 121 , and the fan driver 130 is used to generate the driving signal DRV2 to drive the fan 131 .

The shock sensor 150 is provided on the air conditioning control device 100 . The vibration sensor 150 detects vibration information IF of the air-conditioning control device 100 . The arithmetic processing controller 140 is coupled to the power supply 110 and the vibration sensor 150 . The arithmetic processing controller 140 receives the second operating power V2 and operates according to the second operating power V2. Based on the second operating power V2, the arithmetic processing controller 140 receives the vibration information IF and controls the power supply 110 to determine whether to cut off the supply of the first operating power V1 of the power supply 110 according to the vibration information IF. In this embodiment, the level of the first operating power supply V1 is greater than the level of the second operating power supply V2.

Specifically, the vibration sensor 150 is used to sense the vibration state that occurs when the air-conditioning control device 100 operates. The vibration information IF generated by the vibration sensor 150 may indicate the magnitude of the positional displacement of the air-conditioning control device 100 due to the vibration. In addition, the arithmetic processing controller 140 can determine whether the absolute value of the peak value of the positional deviation of the air-conditioning control device 100 is greater than a preset threshold value according to the vibration information IF, and when the positional deviation of the air-conditioning control device 100 occurs When the absolute value is greater than the above-mentioned threshold, the operation processing controller 140 can notify the power supply 110 that the supply action of the first operating power V1 needs to be cut off through the generated control command CMD. On the contrary, if the absolute value of the peak value of the position offset generated by the air conditioning control device 100 is not greater than the above-mentioned threshold, the power supply 110 can continue to perform the supply action of the first operating power V1.

Incidentally, in this embodiment, the arithmetic processing controller 140 may execute software to perform the action of interpreting the vibration information IF. And through the result of software execution, the corresponding control command CMD is generated. That is to say, in this embodiment, when the vibration of the air conditioner control device 100 is too severe, the arithmetic processing controller 140 can start the protection action in a few milliseconds (mini-second, ms) through software, and through the control command The CMD acts to cut off the supply of the first operating power V1 of the power supply 110 . Alternatively, in other embodiments, the arithmetic processing controller 140 may not cut off the supply action of the first operating power V1 of the power supply 110 , and directly send a command to stop the operation of the fan 131 and the compressor 121 .

The air conditioning control device 100 according to the embodiment of the present invention further includes a voltage sensor 170 , a temperature sensor 180 and a current sensor 160 . The voltage sensor 170 , the temperature sensor 180 and the current sensor 160 are coupled to the arithmetic processing controller 140 . The voltage sensor 170 , the temperature sensor 180 and the current sensor 160 respectively provide the detected voltage information, temperature information and current information to the operation processing controller 140 as a basis for how the operation processing controller 140 activates the protection mechanism. The voltage sensor 170 and the current sensor 160 can detect the voltage and current status of one or more electronic components inside the air conditioner, and generate voltage information and current information by detecting whether the voltage and current status are abnormal. The temperature sensor 180 can be arranged at one or more positions inside the air-conditioning machine, and generates temperature information by detecting the temperature state of each part of the air-conditioning machine when it is working.

Next, please refer to FIG. 2 , which is a schematic diagram of an air conditioner control device according to another embodiment of the present invention. The air conditioner control device 200 includes a power supply 210, a compressor driver 220, a fan driver 230, a vibration sensor 250, an arithmetic processing controller 240, a voltage sensor 260, and a fuse F2. In this embodiment, the power supply 210 includes an input terminal 211 , a fuse F1 , an inrush current protector 212 , voltage converters 213 and 214 , a switch SW1 , a startup inrush current protector 215 and a power factor corrector 216 . The input terminal 211 is used for receiving the input power VIN. The fuse F1 is coupled in series between the input end 211 and the surge current protector 212 . The surge current protector 212 is used to reduce the surge current generated on the input power VIN. The voltage converter 214 receives the input power VIN through the inrush current protector 212, and performs a voltage conversion operation on the input power VIN to generate the second operating power V2. In this embodiment, the voltage converters 214 may all be AC to DC voltage converters.

The switch SW1 is coupled to the path of the power supply 210 outputting the first operating power V1. The switch SW1 can be turned on or off according to the control command CMD transmitted by the arithmetic processing controller 240 . The start-up inrush current protector 215 is connected across the two ends of the switch SW1 to reduce the inrush current generated by the air-conditioning control device 200 during the start-up process. The voltage converter 213 is coupled to the output end of the inrush current protector 215, and when the switch SW1 is turned on, performs a voltage conversion operation on the input power VIN to generate the first operating power V1. Wherein, the level of the first operating power supply V1 is greater than the level of the second operating power supply V2

In addition, the power factor corrector 216 is coupled to the output terminal for providing the first operating power supply V1, and has performed the power factor correction action of the first operating power supply V1.

On the other hand, the power supply 210 provides the first operating power V1 to the compressor driver 220 and the fan driver 230 . The compressor driver 220 and the fan driver 230 respectively generate the driving signals DRV1 and DRV2 based on the first operating power V1, and make the driving signals DRV1 and DRV2 drive the compressor 221 and the fan 231 respectively. In this embodiment, the power supply 210 and the fan driver 230 are configured with a fuse F2.

It is worth mentioning that, in this embodiment, when the peak current provided by the driving signal DRV1 is too high, the compressor 221 can feed back the peak current protection signal PC1 to the compressor driver 220, and make the compressor driver 220 cut off the driving signal Supply action of DRV1. Similarly, when the peak current provided by the driving signal DRV2 is too high, the fan 231 can feed back the peak current protection signal PC2 to the fan driver 230 , so that the fan driver 230 cuts off the supplying action of the driving signal DRV2 .

Here, both the protection actions performed by the compressor driver 220 and the fan driver 230 are performed by means of hardware circuits. Therefore, the protection actions performed by the compressor driver 220 and the fan driver 230 can be completed within several micro-seconds (us).

On the other hand, the fuse F1 and the fuse F2 can be respectively blown when the input power VIN and the first operating power V1 generate an overcurrent phenomenon. When an overcurrent phenomenon occurs in the input power VIN, the fuse F1 can be blown to stop the receiving operation of the input power VIN. When the first operating voltage V1 generates an overcurrent phenomenon, the fuse F2 can be blown to prevent the fan driver 230 from receiving the first operating power V1 and achieve the purpose of circuit protection. Here, the blowing action of the fuse F1 and the fuse F2 can be completed in a few seconds, which is another form of hardware protection action.

In this embodiment, the compressor driver 220 and the fan driver 230 are coupled to the arithmetic processing controller 240 . The compressor driver 220 and the fan driver 230 respectively transmit abnormal information ABI1 and ABI2 to the operation processing controller 240 . The abnormality information ABI1 includes abnormality information of temperature information of the compressor driver 220 and current information of the compressor driver 220 . The abnormal information ABI2 includes abnormal information of the temperature information of the fan driver 230 and the current information of the fan driver 230 .

The operation processing controller 240 can generate the control command CMD according to the exception information ABI1 and ABI2 by executing software. And when at least one of the compressor driver 220 , the fan driver 230 , the compressor 221 and the fan 231 is abnormal, the switch SW1 is turned off by the control command CMD. By turning off the switch SW1, the supply operation of the first operation power source V1 can be stopped, and the proper state of the hardware elements can be maintained.

On the other hand, the arithmetic processing controller 240 may further receive temperature information IFO such as the condenser temperature IF21, the ambient temperature IF22, the compressor input temperature IF23, and the compressor output temperature IF24. The arithmetic processing controller 240 also receives the vibration information IF1 of the air-conditioning control device 200 through the vibration sensor 250 . The operation processing controller 240 may execute software to perform operations on the abnormal information ABI1 , ABI2 , the temperature information IFO and the vibration information IF1 , and thereby generate the control command CMD.

In this embodiment, the voltage sensor 260 can be coupled to the terminal of the power supply 210 to generate the first operating power V1, and sense the level of the first operating power V1, so as to transmit the sensed result to the operation processing controller 240. The operation processing controller 240 may also generate a control command according to whether an overvoltage phenomenon occurs at the level of the first operating power supply V1.

The above-mentioned arithmetic processing controller 240 may be a processor with arithmetic capability.

Please refer to FIG. 2 and FIG. 3 below, wherein FIG. 3 is a start sequence diagram of the multiple protection actions of the air-conditioning control device according to the embodiment of the present invention. In the time intervals T1 and T3, the protection operation is performed by the hardware in the air-conditioning control device. In the time interval T2, the protection action is initiated by the software executed by the arithmetic processing controller. The protection actions performed by the compressor driver 220 and the fan driver 230 according to the feedback peak current protection signals PC1 and PC2 fed back by the compressor 221 and the fan 231 respectively may occur at time T11 in the time interval T1. The protection action performed by the inrush current protector 212 may occur in the time interval T1 relatively later than the time T12 in the time T11 . In addition, in the time T21 in the time interval T2, the arithmetic processing controller 240 may determine according to the current information transmitted by the compressor driver 220 and the fan driver 230, and when at least one of the driving signals DRV1 and DRV2 is driven When the average current is greater than a preset threshold, the protection mechanism is activated. Then, in the time T22 in the time interval T2, the arithmetic processing controller 240 can determine according to the temperature information transmitted by the compressor driver 220 and the fan driver 230 and the temperature information IFO received by the arithmetic processing controller 240, and In order to decide whether to activate the protection mechanism. During time T23 in the time interval T2, the arithmetic processing controller 240 can activate the protection mechanism according to the vibration information IF1 generated by the vibration sensor 250. In this embodiment, the times T21, T22, and T23 may occur in sequence.

The fuses provided in the compressor 221, the fan 231 and the power supply 210 can be respectively blown at times T31 to T33 in the time interval T3 when an abnormal phenomenon (overcurrent) occurs, and a protection mechanism is activated.

According to the above description, it can be known that in the air conditioning control device of the embodiment of the present invention, multiple protection mechanisms with different rates are set. The air-conditioning control device can be effectively prevented from being damaged due to at least one of various reasons such as over-temperature, over-current, and vibration, and the working properly of the air-conditioning control device can be effectively maintained.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (7)

1. An air-conditioning control device for controlling an air-conditioning machine, characterized in that, comprising: a power supply, having an input terminal for receiving input power, and generating a first operating power and a second operating power according to the input power; a compressor driver, operated according to the first operating power source, to generate a first drive signal to drive the compressor; a fan driver, which operates according to the first operating power source and generates a second driving signal to drive the fan; a vibration sensor to detect vibration information of the air conditioner; a temperature sensor for detecting a plurality of temperature information of the air conditioner; a current sensor to detect the current information of the compressor and the fan; a voltage sensor for detecting voltage information in the air conditioning control device; and an arithmetic processing controller, coupled to the power supply, the compressor driver, the fan driver, the vibration sensor, the temperature sensor, the current sensor and the voltage sensor, according to the second operation The power supply operates, according to the vibration information, the temperature information, the current information and the voltage information to control the power supply to decide whether to cut off the supply of the first operating power, or stop the compressor , the fan is running. 2 . The air conditioner control device according to claim 1 , wherein the arithmetic processing controller generates the control command through a protection circuit which is hardware or through executing software. 3 . 3 . The air-conditioning control device according to claim 1 , wherein the compressor driver transmits abnormality information to the arithmetic processing controller, and the arithmetic processing controller further generates the abnormality information according to the abnormality information. 4 . control commands. 4 . The air conditioning control device according to claim 3 , wherein the abnormality information includes temperature information of the compressor driver and current information of the compressor driver. 5 . 5 . The air-conditioning control device according to claim 1 , wherein the fan driver also transmits abnormality information to the arithmetic processing controller, and the arithmetic processing controller further generates the said abnormality information according to the abnormality information. 6 . control commands. 6 . The air-conditioning control device according to claim 5 , wherein the abnormality information includes temperature information of the fan and current information of the fan. 7 . 7 . The air-conditioning control device according to claim 1 , wherein the plurality of pieces of temperature information include: a suction end temperature of the compressor, a discharge end temperature of the compressor, and an ambient temperature of the air conditioner. 8 . and the condenser temperature of the air conditioner.

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