Power device

Abstract

A power device comprises a loudspeaker, a sound source circuit and a control unit. The loudspeaker is provided with a first input pin and is used for making a sound according to a signal received by the first input pin. The sound source circuit is provided with a first output pin, and the first output pin is electrically coupled with the first input pin. A plurality of sound gears are stored in the sound source circuit, each sound gear corresponds to one prompt tone, each prompt tone has at least two pitches, and each pitch corresponds to one PWM frequency. The sound source circuit is further used for selecting one sound file according to a control command, generating a first PWM signal according to the selected sound file, and outputting the first PWM signal from the first output pin. The control unit is used for generating a corresponding control command according to a judgment result.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to an electric power device. Background Art

[0002] Uninterruptible power supply (UPS) is used to provide backup power to necessary equipment (such as computers, servers or medical equipment) when AC mains fails, so that these devices can still operate normally under this situation. Therefore, it is very important to allow users to obtain the current status and behavior of the UPS in real time so that users can take corresponding measures to ensure the normal operation of the UPS. Utility Model Content

[0003] One of the purposes of the present invention is to provide an electric device, which allows a user to obtain the current status and behavior of the electric device in real time.

[0004] To achieve the above-mentioned purpose, the utility model provides an electric device, which includes a speaker, a sound source circuit and a control unit. The speaker has a first input pin, and is used to emit a sound according to a signal received by the first input pin. The sound source circuit has a first output pin, and the first output pin is electrically coupled to the first input pin. The sound source circuit stores a plurality of sound files, each sound file corresponds to a prompt sound, and each prompt sound has at least two pitches, and each pitch corresponds to a PWM frequency. The sound source circuit is also used to select one of the sound files according to a control command, and generate a first PWM signal according to the selected sound file, and output the first PWM signal from the first output pin. The control unit is used to generate a corresponding control command according to a judgment result.

[0005] In an embodiment of the present invention, the power device is a non-stop power supply system.

[0006] In another embodiment of the present invention, the power device is a power distribution unit.

[0007] In yet another embodiment of the present invention, the power device is an automatic power switch.

[0008] In order to make the above-mentioned objectives, technical features and benefits after actual implementation more obvious and understandable, a more detailed description will be given below with the help of preferred implementation examples and corresponding related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 An electric device according to an embodiment of the present invention is shown.

[0011] Figure 2 It is used to illustrate the first PWM signal PWM_1 and the second PWM signal PWM_2 corresponding to one of the prompt sounds.

[0012] Figure 3 It is used to illustrate the first PWM signal PWM_1 and the second PWM signal PWM_2 corresponding to another prompt tone.

[0013] Figure 4 The process shown is used to illustrate one of the prompt tone application methods of the power device 100 .

[0014] Figure 5 The process shown is used to illustrate another application method of the prompt sound of the power device 100 .

[0015] Figure 6 The process shown is used to illustrate another application method of the prompt sound of the power device 100 .

[0016] Figure 7 An electric device according to another embodiment of the present invention is shown.

[0017] Figure 8 An electric device according to yet another embodiment of the present invention is shown.

[0018] Fig. 9 An electric device according to yet another embodiment of the present invention is shown.

[0019] Fig.10 An electric device according to yet another embodiment of the present invention is shown.

[0020] Fig.11 An electric device according to yet another embodiment of the present invention is shown.

[0021] Fig.12 An electric device according to yet another embodiment of the present invention is shown.

[0022] Fig.13 An electric device according to yet another embodiment of the present invention is shown.

[0023] Fig.14 An electric device according to yet another embodiment of the present invention is shown.

[0024] Fig.15 An electric device according to yet another embodiment of the present invention is shown.

[0025] Fig.16 An electric device according to yet another embodiment of the present invention is shown.

[0026] Fig.17 An electric device according to yet another embodiment of the present invention is shown.

[0027] Fig.18 An electric device according to yet another embodiment of the present invention is shown.

[0028] Fig.19 An electric device according to yet another embodiment of the present invention is shown.

[0029] Fig. 20 A main block diagram of the power device of the present invention is shown. DETAILED DESCRIPTION

[0030] In order to more clearly understand the features, contents and advantages of the present invention and the effects that can be achieved, the present invention is hereby described in detail in the form of embodiments in conjunction with the accompanying drawings. The drawings used therein are only for illustration and auxiliary description purposes and may not be the actual proportions and precise configurations after the implementation of the present invention. Therefore, the proportions and configuration relationships of the attached drawings should not be interpreted to limit the scope of rights of the present invention in actual implementation.

[0031] The advantages, features and technical methods achieved by the present invention will be described in more detail with reference to the exemplary embodiments and the accompanying drawings so as to be easier to understand, and the present invention may be implemented in different forms, so it should not be understood to be limited to the embodiments described herein. On the contrary, for those with ordinary knowledge in the relevant technical field, the provided embodiments will make the disclosure more thorough and comprehensive and completely convey the scope of the present invention, and the present invention will only be defined by the scope of the attached patent application.

[0032] Figure 1 An electric device according to an embodiment of the present invention is shown. Figure 1 As shown, the power device 100 is an uninterruptible power system. Figure 1 As can be seen from the circuit structure shown, the power device 100 is an off-line UPS. The power device 100 includes a filter unit 114, a switch unit 116, a DC-AC conversion circuit 104, a switch unit 118, a filter unit 120, a charging circuit 102, a battery 106, a sensing circuit 112, a control unit 110, an audio source circuit 180, a speaker 190, a communication interface 192, a user interface 194 and a bypass path 124.

[0033] The switch unit 116 is electrically coupled to one end of the bypass path 124 and is electrically coupled to an AC power source (e.g., a mains power source) through the filter unit 114. The switch unit 118 is electrically coupled to the other end of the bypass path 124 and is electrically coupled to an output end 122 of the uninterruptible power supply system through the filter unit 120. The charging circuit 102 is electrically coupled to the battery 106 and is electrically coupled to an AC power source through the filter unit 114. The DC-AC conversion circuit 104 is electrically coupled between the battery 106 and the switch unit 118. In addition, the audio source circuit 180 is electrically coupled to the speaker 190, and the switch unit 116, the switch unit 118, the charging circuit 102, the DC-AC conversion circuit 104, the communication interface 192, the user interface 194, and the audio source circuit 180 are all electrically coupled to the control unit 110 to be controlled by the control unit 110. For example, the control unit 110 may control the operation of the switch unit 118 to determine whether to electrically couple the output terminal of the DC-AC conversion circuit 104 to the filter unit 120 or to electrically couple the bypass path 124 to the filter unit 120 .

[0034] In this example, the sensing circuit 112 is also electrically coupled to the aforementioned AC power source, the output terminal 122 of the uninterruptible power supply system, and the input terminal of the DC-AC conversion circuit 104 (as shown by coupling points A, B, and C, respectively) to obtain the sensing result, and transmit the sensing result to the control unit 110, so that the control unit 110 can judge the current state of the uninterruptible power supply system. In addition, in this example, the audio source circuit 180 has a first output pin and a second output pin. The audio source circuit 180 stores a plurality of audio files, each audio file corresponds to a prompt sound, and each prompt sound has at least two pitches, and each pitch corresponds to a PWM frequency. The audio source circuit 180 is also used to select one of the audio files according to a control command, and generate a first PWM signal PWM_1 and a second PWM signal PWM_2 according to the selected audio file, and output the first PWM signal PWM_1 and the second PWM signal PWM_2 from its first output pin and the second output pin, respectively. In this example, the speaker 190 has a first input pin and a second input pin, and the first input pin and the second input pin of the speaker 190 are electrically coupled to the first output pin and the second output pin of the sound source circuit 180, respectively. The speaker 190 is used to emit sound according to the signals received by the first input pin and the second input pin. In addition, the control unit 110 is also used to generate a corresponding control command (described later) according to a judgment result, and transmit the generated control command to the sound source circuit 180.

[0035] Figure 2 It is used to illustrate the first PWM signal PWM_1 and the second PWM signal PWM_2 corresponding to one of the prompt sounds. Figure 2As shown, the levels of the first PWM signal PWM_1 and the second PWM signal PWM_2 both vary between 0V and Va, and the timing of the second PWM signal PWM_2 is different from the timing of the first PWM signal PWM_1. In addition, the duty cycles of the first PWM signal PWM_1 and the second PWM signal PWM_2 do not exceed 50%, and the time when these two PWM signals are at a high level cannot completely overlap, so that the speaker 190 can operate normally. In this example, the duty cycles of the first PWM signal PWM_1 and the second PWM signal PWM_2 are both maintained at 48%. In a preferred embodiment, the duty cycles of the first PWM signal PWM_1 and the second PWM signal PWM_2 are both 10%. And as Figure 2 As shown, when the frequency of the two PWM signals is 956μs (microseconds), the speaker 190 will emit a sound with a pitch of Do; when the frequency of the two PWM signals is 758μs, the speaker 190 will emit a sound with a pitch of Mi; and when the frequency of the two PWM signals is 637μs, the speaker 190 will emit a sound with a pitch of So. Since the frequency changes of the two PWM signals are 956μs, 758μs and 637μs in sequence, the speaker 190 will emit prompt sounds with pitches of Do, Mi and So in sequence. Figure 3 It is used to illustrate the first PWM signal PWM_1 and the second PWM signal PWM_2 corresponding to another prompt tone. Figure 3 As shown, the frequency changes of the first PWM signal PWM_1 and the second PWM signal PWM_2 are 637 μs, 758 μs and 956 μs in sequence, so the speaker 190 will emit prompt tones with pitches of So, Mi and Do in sequence.

[0036] Depend on Figure 2 and Figure 3 As can be seen from the description, different prompt sounds can be used to indicate different states of the UPS, and can also be used to indicate different behaviors of the UPS. Therefore, the user can obtain and identify the current state of the UPS in real time based on the prompt sound emitted by the speaker 190, or obtain and identify the current behavior of the UPS in real time based on the prompt sound emitted by the speaker 190.

[0037] In addition, despite Figure 2 and Figure 3The two types of prompt sounds described both have three pitches, Do, Mi and So, but this is only used as an example and is not intended to limit the present invention. In other words, the pitches in the prompt sound corresponding to each sound file, the order of the pitches, the duration of each pitch, and the number of times each pitch appears can all be changed according to actual design requirements. For example, the prompt sound can be designed to have a pitch combination of Mi, Fa and Sol in sequence, or a pitch combination of Fa, Mi, Fa and La in sequence, or a pitch combination of La and Si in sequence. Through the above description, those with ordinary knowledge in this field should know that as long as the prompt sound has at least two pitches, it is the scope of protection of the present invention. In addition, the volume of each pitch can also be changed according to actual design requirements, as long as the level Va is changed. The higher the level Va, the louder the sound emitted by the speaker 190.

[0038] In addition, it is conceivable that if there are multiple UPSs in the same field, then the user only needs to store audio files corresponding to different prompt sounds in the audio source circuits 180 of these UPSs for the same state or the same behavior, so that the user can clearly identify which UPS issued the prompt sound and judge the state or behavior of the UPS based on the prompt sound heard.

[0039] Figure 4 The process shown is used to illustrate one of the prompt sound application methods of the power device 100. Figure 4 and Figure 1 First, the control unit 110 determines whether the power button of the UPS is pressed (as shown in step S402). In step S402, when the judgment is no, the control unit 110 returns to step S402; when the judgment is yes, the control unit 110 determines whether the UPS is in the power-on state (as shown in step S404). When the judgment result of step S404 shows that the UPS is in the power-on state, the control unit 110 instructs the audio source circuit 180 to select the audio file of the shutdown prompt sound, so that the audio source circuit 180 outputs the corresponding first PWM signal PWM_1 and the second PWM signal PWM_2 (as shown in step S406), thereby causing the speaker 190 to emit a shutdown prompt sound, for example, Figure 2 Then, the control unit 110 shuts down the UPS (as shown in step S408).

[0040] On the contrary, when the determination result of step S404 shows that the UPS is not in the power-on state, the control unit 110 instructs the audio source circuit 180 to select the audio file of the power-on prompt sound, so that the audio source circuit 180 outputs the corresponding first PWM signal PWM_1 and second PWM signal PWM_2 (as shown in step S410), thereby causing the speaker 190 to emit the power-on prompt sound. Of course, the power-on prompt sound is different from the power-off prompt sound, for example Figure 3 Then, the control unit 110 turns on the UPS system (as shown in step S412).

[0041] Figure 5 The process shown is used to illustrate another application method of the prompt sound of the power device 100. Figure 5 and Figure 1 First, the control unit 110 determines whether the uninterruptible power supply system is in battery mode (as shown in step S502). In step S502, when the judgment is no, the control unit 110 returns to step S502; when the judgment is yes, the control unit 110 determines whether the battery 106 of the uninterruptible power supply system is in low voltage according to the sensing result provided by the sensing circuit 112 (as shown in step S504). When the judgment result of step S504 shows that the battery 106 of the uninterruptible power supply system is in low voltage, the control unit 110 instructs the sound source circuit 180 to select the audio file of the low battery voltage prompt sound, so that the sound source circuit 180 outputs the corresponding first PWM signal PWM_1 and the second PWM signal PWM_2 (as shown in step S506), thereby causing the speaker 190 to emit a low battery voltage prompt sound, such as emitting a low battery voltage prompt sound. Figure 2 The prompt tone is emitted, or a third prompt tone is emitted.

[0042] On the contrary, when the determination result of step S504 shows that the battery 106 of the uninterruptible power supply system is not at a low voltage, the control unit 110 instructs the sound source circuit 180 to select the sound file of the battery mode prompt sound, so that the sound source circuit 180 outputs the corresponding first PWM signal PWM_1 and second PWM signal PWM_2 (as shown in step S508), thereby causing the speaker 190 to emit a battery mode prompt sound, such as Figure 3 The prompt tone described above may be a fourth prompt tone. In short, the prompt tone corresponding to when the battery 106 is at a low voltage should be different from the prompt tone corresponding to when the battery 106 is not at a low voltage.

[0043] Figure 6 The process shown is used to illustrate another application method of the prompt sound of the power device 100. Figure 6 and Figure 5 , compared to Figure 5 , Figure 6The process shown has an additional step of counting with a first counter and adding 1 to the count value (as shown in step S606), a step of determining whether the count value is greater than or equal to a first default value (as shown in step S608), a step of resetting the first counter (as shown in step S612), a step of counting with a second counter and adding 1 to the count value (as shown in step S614), a step of determining whether the count value is greater than or equal to a second default value (as shown in step S616), and a step of resetting the second counter (as shown in step S620). The first default value is, for example, 10 seconds, and the second default value is, for example, 30 seconds. In this way, when the judgment result of step S604 is that the battery 106 presents a low voltage, the speaker 190 can emit a low battery voltage reminder sound once every 10 seconds. Similarly, when the judgment result of step S604 is that the battery 106 does not present a low voltage, the speaker 190 can emit a battery mode reminder sound once every 30 seconds. In addition, although in this example, the first default value is 10 seconds and the second default value is 30 seconds, this is only used as an example and is not intended to limit the present invention.

[0044] Please refer to Figure 1 In this example, the control unit 110 is further connected to a network through the communication interface 192, and the control unit 110 is further used to provide a network user interface. The network user interface is used for the user to set the corresponding prompt tone under different judgment results. In addition, in this example, the user interface 194 is also used for the user to set the corresponding prompt tone under different judgment results. In this example, the user interface 194 includes a touch display panel.

[0045] In addition, although in this example, the sensing circuit 112 is electrically coupled to the AC power supply, the output terminal 122 of the uninterruptible power supply system, and the input terminal of the DC-AC conversion circuit 104, this is not intended to limit the present invention. A person with ordinary knowledge in the art should know that the sensing circuit 112 can also be electrically coupled to the AC power supply, the output terminal 122 of the uninterruptible power supply system, and at least one of the input terminals of the DC-AC conversion circuit 104. It is worth mentioning that although in this example, the uninterruptible power supply system has a filter unit 114, a filter unit 120, a battery 106, a communication interface 192, and a user interface 194, this is not intended to limit the present invention. A person with ordinary knowledge in the art should know that these five components can be used according to actual design requirements. For example, the uninterruptible power supply system may not have a battery 106 inside, but instead adopt an external battery 106.

[0046] It is worth mentioning that the sound source circuit 180 can also provide only one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the speaker 190, so that the speaker 190 can emit a corresponding prompt sound. However, in this case, the input pin of the speaker 190 that does not receive the PWM signal needs to be electrically coupled to a reference potential, such as electrically coupled to a ground potential.

[0047] Figure 7 FIG. 2 shows an electric device according to another embodiment of the present invention. Figure 7 As shown, the power device 200 is an uninterruptible power system. Figure 7 As can be seen from the circuit structure shown, the power device 200 is an offline uninterruptible power system. Figure 1 The offline uninterruptible power supply system shown in the figure is Figure 7 The difference of the offline uninterruptible power supply system shown is that it further includes a digital-to-analog conversion circuit 182. The digital-to-analog conversion circuit 182 is electrically coupled between the audio source circuit 180 and the speaker 190. The digital-to-analog conversion circuit 182 has a first input pin, a second input pin, a first output pin, and a second output pin. The first input pin and the second input pin of the digital-to-analog conversion circuit 182 are electrically coupled to the first output pin and the second output pin of the audio source circuit 180, respectively, to receive the first PWM signal PWM_1 and the second PWM signal PWM_2. The first output pin and the second output pin of the digital-to-analog conversion circuit 182 are electrically coupled to the first input pin and the second input pin of the speaker 190, respectively. The digital-to-analog conversion circuit 182 is used to convert the first PWM signal PWM_1 and the second PWM signal PWM_2 into a first analog signal AN_1 and a second analog signal AN_2, and output the first analog signal AN_1 and the second analog signal AN_2 from its first output pin and the second output pin respectively, so that the speaker 190 can emit a corresponding prompt tone.

[0048] It is worth mentioning that the audio source circuit 180 can also provide only one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the digital-analog conversion circuit 182, and the digital-analog conversion circuit 182 is used to convert the received PWM signal into the first analog signal AN_1 and the second analog signal AN_2, so that the speaker 190 can emit the corresponding prompt sound. In addition, there is another method that the audio source circuit 180 only provides one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the digital-analog conversion circuit 182, and the digital-analog conversion circuit 182 is used to convert the received PWM signal into one of the first analog signal AN_1 and the second analog signal AN_2, and then provides the converted analog signal to the speaker 190, so that the speaker 190 can emit the corresponding prompt sound. Of course, in this method, the input pin of the speaker 190 that does not receive the analog signal needs to be electrically coupled to the reference potential.

[0049] Based on the above teachings, those skilled in the art should know that the concept of the above prompt tone can also be applied to other uninterruptible power supply systems of different structures. Of course, the concept of the above prompt tone can also be applied to other different types of power devices, such as power distribution units (PDU) and automatic transfer switches (ATS). Please see the following description.

[0050] Figure 8 FIG. 2 shows an electric device according to another embodiment of the present invention. Figure 8 As shown, the power device 300 is an uninterruptible power system. Figure 8 As can be seen from the circuit structure shown, the power device 200 is an offline uninterruptible power system. Figure 1 The offline uninterruptible power supply system shown in the figure is Figure 8 The difference of the offline uninterruptible power supply system shown is that it further includes a DC-DC conversion circuit 108. The DC-DC conversion circuit 108 is electrically coupled between the battery 106 and the input terminal of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0051] Fig. 9 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig. 9 As shown, the power device 400 is an uninterruptible power system. Fig. 9 As can be seen from the circuit structure shown, the power device 400 is an offline uninterruptible power system. Figure 7 The offline uninterruptible power supply system shown in the figure is Fig. 9The difference of the offline uninterruptible power supply system shown is that it further includes a DC-DC conversion circuit 108. The DC-DC conversion circuit 108 is electrically coupled between the battery 106 and the input terminal of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0052] Fig.10 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.10 As shown, the power device 500 is an uninterruptible power system. Fig.10 As can be seen from the circuit structure shown, the power device 500 is a line-interactive UPS. Figure 1 The offline uninterruptible power supply system shown in the figure is Fig.10 The difference of the illustrated online interactive uninterruptible power supply system is that it further includes an automatic voltage regulation circuit (AVR circuit) 126. The automatic voltage regulation circuit 126 is disposed on the bypass path 124 and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0053] Fig.11 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.11 As shown, the power device 600 is an uninterruptible power system. Fig.11 As can be seen from the circuit structure shown, the power device 600 is an online interactive uninterruptible power system. Figure 7 The offline uninterruptible power supply system shown in the figure is Fig.11 The difference of the illustrated online interactive uninterruptible power supply system is that it further includes an automatic voltage adjustment circuit 126. The automatic voltage adjustment circuit 126 is disposed on the bypass path 124 and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0054] Fig.12 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.12 As shown, the power device 700 is an uninterruptible power system. Fig.12 As can be seen from the circuit structure shown, the power device 700 is an online interactive uninterruptible power system. Fig.10 The online interactive uninterruptible power supply system shown in Fig.12The difference of the online interactive uninterruptible power supply system shown is that it further includes a DC-DC conversion circuit 108. The DC-DC conversion circuit 108 is electrically coupled between the battery 106 and the input terminal of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0055] Fig.13 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.13 As shown, the power device 800 is an uninterruptible power system. Fig.13 As can be seen from the circuit structure shown, the power device 800 is an online interactive uninterruptible power system. Fig.11 The online interactive uninterruptible power supply system shown in Fig.13 The difference of the online interactive uninterruptible power supply system shown is that it further includes a DC-DC conversion circuit 108. The DC-DC conversion circuit 108 is electrically coupled between the battery 106 and the input terminal of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110.

[0056] Fig.14 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.14 As shown, the power device 900 is an uninterruptible power system. Fig.14 As can be seen from the circuit structure shown, the power device 900 is an online uninterruptible power supply system (On-line UPS). Figure 8 The offline uninterruptible power supply system shown in the figure is Fig.14 The difference of the online uninterruptible power supply system shown is that it further includes a power factor correction circuit (PFC circuit) 128. The power factor correction circuit 128 is electrically coupled between the switch unit 116 and the input end of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110. In addition, in this example, the control unit 110 can control the operation of the switch unit 116 to determine whether to electrically couple the filter unit 114 to the bypass path 124 or to electrically couple the filter unit 114 to the input end of the power factor correction circuit 128.

[0057] Fig.15 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.15 As shown, the power device 1000 is an uninterruptible power system. Fig.15 As can be seen from the circuit structure shown, the power device 1000 is an online uninterruptible power system. Fig. 9The offline uninterruptible power supply system shown in the figure is Fig.15 The difference of the online uninterruptible power supply system shown is that it further includes a power factor correction circuit 128. The power factor correction circuit 128 is electrically coupled between the switch unit 116 and the input end of the DC-AC conversion circuit 104, and is electrically coupled to the control unit 110 to be controlled by the control unit 110. In addition, in this example, the control unit 110 can control the operation of the switch unit 116 to determine whether to electrically couple the filter unit 114 to the bypass path 124 or to electrically couple the filter unit 114 to the input end of the power factor correction circuit 128.

[0058] Fig.16 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.16 As shown, the power device 1100 is a power distribution unit. The power device 1100 includes two conductors (as shown by label 602), a plurality of switch units (as shown by label 604), a plurality of sensor units (as shown by label 606), a plurality of sockets (as shown by label 608), an AC-DC conversion circuit 610, a control unit 612, a user interface 620, a communication interface 622, an audio source circuit 624 and a speaker 626. Fig.16 As shown, the two conductors 602 are electrically coupled to the live wire (labeled as L) and the neutral wire (labeled as N) of the AC power source, respectively. Each switch unit 604 is electrically coupled to one of the two conductors 602. Each sensing unit 606 is electrically coupled to one of the switch units 604. Each socket 608 is electrically coupled to one of the sensing units 606 and electrically coupled to the other of the two conductors 602. The AC-DC conversion circuit 610 is electrically coupled to the two conductors and supplies the working voltage to the control unit 612.

[0059] In addition, the switch units 604, the user interface 620, the communication interface 622 and the driving circuit 624 are all electrically coupled to the control unit 612 to accept the control of the control unit 612. The labels C1~CN are control signals for controlling the switch units 604, respectively, where N is a natural number. In addition, the sensing units 606 are also electrically coupled to the control unit 612 to provide sensing signals D1~DN to the control unit, respectively. In this example, the sound source circuit 624 will also provide the first PWM signal PWM_1 and the second PWM signal PWM_2 to the speaker 626. Therefore, the speaker 626 can allow the user to obtain and identify the current status and behavior of the power distribution unit in real time by emitting different prompt sounds. For example, the speaker 626 can emit different prompt sounds to show whether the power distribution unit is in the on state or the off state. Since the functions and operations of the control unit 612, the sound source circuit 624 and the speaker 626 can refer to Figure 1 The functions and operations of the control unit 110, the sound source circuit 180 and the speaker 190 are not further described here.

[0060] In addition, in this example, the control unit 612 is further connected to a network through the communication interface 622, and the control unit 612 is further used to provide a network user interface. This network user interface is used for the user to set the corresponding prompt tone under different judgment results. In addition, in this example, the user interface 620 is also used for the user to set the corresponding prompt tone under different judgment results. In this example, the user interface 620 includes a touch display panel. It is worth mentioning that the sound source circuit 624 can also only provide one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the speaker 626, so that the speaker 626 can emit the corresponding prompt tone. However, in this case, the input pin of the speaker 626 that does not receive the PWM signal needs to be electrically coupled to the reference potential.

[0061] Fig.17 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.17 As shown, the power device 1200 is a power distribution unit. Fig.16 The power distribution unit shown, Fig.17The difference of the power distribution unit shown is that it further includes a digital-to-analog conversion circuit 628. The digital-to-analog conversion circuit 628 is electrically coupled between the audio source circuit 624 and the speaker 626. The digital-to-analog conversion circuit 628 has a first input pin, a second input pin, a first output pin, and a second output pin. The first input pin and the second input pin of the digital-to-analog conversion circuit 628 are electrically coupled to the first output pin and the second output pin of the audio source circuit 624, respectively, to receive the first PWM signal PWM_1 and the second PWM signal PWM_2. The first output pin and the second output pin of the digital-to-analog conversion circuit 628 are electrically coupled to the first input pin and the second input pin of the speaker 626, respectively. The digital-to-analog conversion circuit 628 is used to convert the first PWM signal PWM_1 and the second PWM signal PWM_2 into a first analog signal AN_1 and a second analog signal AN_2, and output the first analog signal AN_1 and the second analog signal AN_2 from its first output pin and the second output pin respectively, so that the speaker 626 can emit a corresponding prompt tone.

[0062] It is worth mentioning that the audio source circuit 628 can also provide only one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the digital-analog conversion circuit 628, and the digital-analog conversion circuit 628 is used to convert the received PWM signal into the first analog signal AN_1 and the second analog signal AN_2, so that the speaker 626 can emit the corresponding prompt sound. In addition, there is another method that the audio source circuit 624 only provides one of the first PWM signal PWM_1 and the second PWM signal PWM_2 to the digital-analog conversion circuit 628, and the digital-analog conversion circuit 628 is used to convert the received PWM signal into one of the first analog signal AN_1 and the second analog signal AN_2, and then provides the converted analog signal to the speaker 626, so that the speaker 626 can emit the corresponding prompt sound. Of course, in this method, the input pin of the speaker 626 that does not receive the analog signal needs to be electrically coupled to the reference potential.

[0063] Fig.18 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.18 As shown, the power device 1300 is an automatic power switch. Fig.16 The power distribution unit shown, Fig.18The difference of the automatic power switch shown is that it further includes an automatic switch 630. In addition to electrically coupling the two conductors 602, the automatic switch 630 is also electrically coupled to two AC power sources. The live wire and the neutral wire of one AC power source are marked with L1 and N1 respectively, and the live wire and the neutral wire of the other AC power source are marked with L2 and N2 respectively. In addition, the control unit 612 also controls the operation of the automatic switch 630 with a control signal CK, so as to control the automatic switch 630 to select one of the AC power sources to be electrically coupled to the two conductors 602.

[0064] Fig.19 FIG. 2 shows an electric device according to another embodiment of the present invention. Fig.19 As shown, the power device 1400 is an automatic power switch. Fig.17 The power distribution unit shown, Fig.19 The difference of the automatic power switch shown is that it further includes an automatic switch 630. In addition to electrically coupling the two conductors 602, the automatic switch 630 is also electrically coupled to two AC power sources. The live wire and the neutral wire of one AC power source are marked with L1 and N1 respectively, and the live wire and the neutral wire of the other AC power source are marked with L2 and N2 respectively. In addition, the control unit 612 also controls the operation of the automatic switch 630 with a control signal CK, so as to control the automatic switch 630 to select one of the AC power sources to be electrically coupled to the two conductors 602.

[0065] According to the description of the above embodiments, the main block diagram of the power device of the present invention can be summarized as follows: Fig. 20 Please refer to Fig. 20 The power device 2000 mainly includes a control unit 110, a sound source circuit 180 and a speaker 190. In summary, since the sound source circuit 180 stores a plurality of sound files corresponding to different prompt sounds, each prompt sound has at least two pitches, and the sound source circuit 180 can generate a corresponding PWM signal according to the selected sound file, the speaker 190 can further emit different prompt sounds. In addition, in the above embodiments, the control unit and the sound source circuit can also be integrated into an integrated circuit, and are not limited to being implemented by two individual components.

[0066] The embodiments described above are only for illustrating the technical ideas and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the patent scope of the utility model. That is, all equivalent changes or modifications made according to the spirit disclosed by the utility model should still be included in the patent scope of the utility model.

Claims

1. An electric power device, characterized in that: The electric device comprises: a speaker having a first input pin and configured to emit a sound according to a signal received by the first input pin; a sound source circuit having a first output pin, the first output pin being electrically coupled to the first input pin, the sound source circuit storing a plurality of sound files, each sound file corresponding to a prompt sound, and each prompt sound having at least two pitches, each pitch corresponding to a PWM frequency, the sound source circuit further configured to select one of the sound files according to a control command, generate a first PWM signal according to the selected sound file, and output the first PWM signal from the first output pin; and A control unit is used to generate the corresponding control command according to a judgment result.

2. The electric power device according to claim 1, characterized in that: The speaker further has a second input pin, and is further used to make a sound according to the signals received by the first input pin and the second input pin, and the sound source circuit further has a second output pin, the second output pin is electrically coupled to the second input pin, and the sound source circuit is further used to generate a second PWM signal according to the selected sound file, and output the second PWM signal from the second output pin, and the timing of the second PWM signal is different from the timing of the first PWM signal.

3. The electric power device according to claim 2, characterized in that: The power device further includes a digital-to-analog conversion circuit, which is electrically coupled between the audio source circuit and the speaker. The digital-to-analog conversion circuit has a third input pin, a fourth input pin, a third output pin and a fourth output pin. The third input pin, the fourth input pin, the third output pin and the fourth output pin are electrically coupled to the first output pin, the second output pin, the first input pin and the second input pin respectively. The digital-to-analog conversion circuit is used to convert the first PWM signal and the second PWM signal into a first analog signal and a second analog signal, and output the first analog signal and the second analog signal from the third output pin and the fourth output pin respectively.

4. The electric power device according to claim 1, characterized in that: The power device further includes a digital-to-analog conversion circuit, which is electrically coupled between the audio source circuit and the speaker. The digital-to-analog conversion circuit has a second input pin and a second output pin. The second input pin is electrically coupled to the first output pin, and the second output pin is electrically coupled to the first input pin. The digital-to-analog conversion circuit is used to convert the first PWM signal into a first analog signal and output the first analog signal from the second output pin.

5. The electric power device according to claim 4, characterized in that: The speaker further has a third input pin, and is further used to make a sound according to the signals received by the first input pin and the third input pin, and the digital-to-analog conversion circuit further has a third output pin, and the third output pin is electrically coupled to the third input pin. The digital-to-analog conversion circuit is further used to convert the first PWM signal into the first analog signal and a second analog signal, and output the first analog signal and the second analog signal from the second output pin and the third output pin respectively.

6. The electric power device according to claim 1, characterized in that: The control unit and the audio source circuit are further integrated into an integrated circuit.

7. The electric power device according to claim 1, characterized in that: The power device is an uninterruptible power system, and the power device further comprises: A first switch unit electrically coupled to an AC power source and one end of a bypass path; A second switch unit electrically coupling an output terminal of the uninterruptible power supply system and the other end of the bypass path; a charging circuit electrically coupling the AC power source and a battery; A DC-AC conversion circuit is electrically coupled between the battery and the second switch unit. The first switch unit, the second switch unit, the charging circuit and the DC-AC conversion circuit are all electrically coupled to the control unit to be controlled by the control unit.

8. The electric power device according to claim 7, characterized in that: The judgment result shows whether the uninterruptible power supply system is in the power-on state, and the prompt tone corresponding to the uninterruptible power supply system being in the power-on state is different from the prompt tone corresponding to the uninterruptible power supply system being in the power-off state.

9. The electric power device according to claim 7, characterized in that: The power device further includes a sensing circuit, which is electrically coupled to the control unit to be controlled by the control unit. The sensing circuit is also electrically coupled to at least one of the AC power source, the output end and the input end of the DC-AC conversion circuit to obtain a sensing result.

10. The electric power device according to claim 9, characterized in that: The sensing circuit is at least electrically coupled to the input end of the DC-AC conversion circuit, and the control unit obtains the judgment result based on the sensing result, and the judgment result shows whether a battery of the uninterruptible power supply system is at a low voltage, and the corresponding prompt sound when the battery is at a low voltage is different from the corresponding prompt sound when the battery is not at a low voltage.

11. The electric power device according to claim 7, characterized in that: The control unit is further used to provide a network user interface, and the network user interface is used for a user to set corresponding prompt tones under different judgment results.

12. The electric power device according to claim 7, characterized in that: The electric device further has a user interface, which is electrically coupled to the control unit. The user interface is used for a user to set corresponding prompt tones under different judgment results.

13. The electric power device according to claim 12, characterized in that: The user interface includes a touch display panel.

14. The electric power device according to claim 7, characterized in that: The power device further includes a DC-DC conversion circuit electrically coupled between the battery and an input terminal of the DC-AC conversion circuit.

15. The electric power device according to claim 14, characterized in that: The power device further includes a power factor correction circuit electrically coupled between the first switch unit and an input end of the DC-AC conversion circuit.

16. The electric power device according to claim 7, characterized in that: The power device further includes an automatic voltage regulating circuit, which is disposed on the bypass path.

17. The electric power device according to claim 1, characterized in that: The power device is a power distribution unit, and the power device further comprises: Two conductors; A plurality of switch units, each switch unit being electrically coupled to one of the two conductors; A plurality of sensing units, each sensing unit being electrically coupled to one of the switch units; A plurality of sockets, each socket being electrically coupled to one of the sensing units and electrically coupled to the other of the two conductors; and an AC-DC conversion circuit electrically coupling the two conductors, The switch units, the sensing units and the AC-DC conversion circuit are all electrically coupled to the control unit.

18. The electric power device according to claim 17, characterized in that: The judgment result indicates whether the power distribution unit is in a power-on state, and the prompt tone corresponding to the power distribution unit being in a power-on state is different from the prompt tone corresponding to the power distribution unit being in a power-off state.

19. The electric power device according to claim 17, characterized in that: The control unit is further used to provide a network user interface, and the network user interface is used for a user to set corresponding prompt tones under different judgment results.

20. The electric power device according to claim 17, characterized in that: The electric device further has a user interface, which is electrically coupled to the control unit. The user interface is used for a user to set corresponding prompt tones under different judgment results.

21. The electric power device according to claim 20, characterized in that: The user interface includes a touch display panel.

22. The electric power device according to claim 1, characterized in that The power device is an automatic power switch, and the power device further comprises:

1. Automatic switch; Two conductors, one end of each conductor is electrically coupled to the automatic switch; A plurality of switch units, each switch unit being electrically coupled to one of the two conductors; A plurality of sensing units, each sensing unit being electrically coupled to one of the switch units; A plurality of sockets, each socket being electrically coupled to one of the sensing units and electrically coupled to the other of the two conductors; and an AC-DC conversion circuit electrically coupled to the automatic switch, The automatic switch, the switch units, the sensing units and the AC-DC conversion circuit are all electrically coupled to the control unit.

23. The electric power device according to claim 22, characterized in that: The judgment result shows whether the automatic power switch is in the on state, and the prompt tone corresponding to the automatic power switch being in the on state is different from the prompt tone corresponding to the automatic power switch being in the off state.

24. The electric power device according to claim 22, characterized in that: The control unit is further used to provide a network user interface, and the network user interface is used for a user to set corresponding prompt tones under different judgment results.

25. The electric power device according to claim 22, characterized in that The electric device further has a user interface, which is electrically coupled to the control unit. The user interface is used for a user to set corresponding prompt tones under different judgment results.

26. The electric power device according to claim 25, characterized in that The user interface includes a touch display panel.

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